CA1195251A - Convex tablet configuration - Google Patents
Convex tablet configurationInfo
- Publication number
- CA1195251A CA1195251A CA000406939A CA406939A CA1195251A CA 1195251 A CA1195251 A CA 1195251A CA 000406939 A CA000406939 A CA 000406939A CA 406939 A CA406939 A CA 406939A CA 1195251 A CA1195251 A CA 1195251A
- Authority
- CA
- Canada
- Prior art keywords
- tablet
- convex section
- combination
- outer surfaces
- broad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
- A61J3/10—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of compressed tablets
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
Abstract
ABSTRACT OF THE DISCLOSURE
A tablet is disclosed which possesses an improved outer shape which reduces packaging costs, by reducing the size and thickness of packaging materials when the tablet is sealably packaged between two sheets of packaging material. The tablet defines at least one and preferably two convex broad outer surfaces, each convex surface including a peripheral convex section that is preferably beveled, and a central convex section that may be conical in shape. The outer surfaces of the peripheral and the central convex sections define between them an at least, and preferably greater than, 180° angle, and at their junction define further a continuous ridge.
The convex table configuration also increases the surface area of the tablet, in the instance where it is to be dissolved in a liquid, and reduces the incidence of tablet "shingling" that obstructs tablet packaging.
A tablet is disclosed which possesses an improved outer shape which reduces packaging costs, by reducing the size and thickness of packaging materials when the tablet is sealably packaged between two sheets of packaging material. The tablet defines at least one and preferably two convex broad outer surfaces, each convex surface including a peripheral convex section that is preferably beveled, and a central convex section that may be conical in shape. The outer surfaces of the peripheral and the central convex sections define between them an at least, and preferably greater than, 180° angle, and at their junction define further a continuous ridge.
The convex table configuration also increases the surface area of the tablet, in the instance where it is to be dissolved in a liquid, and reduces the incidence of tablet "shingling" that obstructs tablet packaging.
Description
~9~
- 2 .
- BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to the manufacture o~ tablets, and more particularly to the manufacture of tablets to be sealed in pouches defined by paired sheet materials.
Description of the Prior Art:
Most tablets, whether for medicinal purposes or otherwise, are manufactured with essentially the same basic shape of essentially flat broad surfaces. In many instances, such as when the tablets contain some active chemical agent, they are desirably vacuum sealed withîn sheet-like - packaging ;n sandwich relationship, in such manner that the sheets converge to form a pouch about the tablet defin-ing a perimeter generally corresponding to a circle.
Conventional tablet shape is defined in cross-section by essentially flat, parallel broad surfaces, sometimes defining at the circumferential periphery a slight bevel, that has been provided primarily to minimize tablet edge fracture.
20 The high cost of raw materials9 including packaging materials has prompted consideration of ways to reduce incidental costs to keep down the ultimate cost of the tablet product. Consideration has therefore recently been - given to a reduction ;n the packaging material requirements for tablets, and a review of the prior art tablet discloses a substantial amount of unused space in the package pouch.
In particular, the unused space or wastage is most apparent when the tablet is of increased thickness, the latter to assure sufficient tablet strength during manufacture and shipping. Also, in the instance where the tablet is of ,~
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increased ~hickness and is packaged by sealing within pouches formed by parallel sheet materials, the conventional tablet configuration has been found to.exert a strain on the pack-age that causes ~he seals between the package sheets to rup-ture~ with the result that product shelf life is reduced andspoilage may occur.
Another problem that has existed concerns the packaging of the tablets. Generally, tablét packaging is performed by the adhesive bonding of parallel sheets of packaging ma-terial, with non-bonded areas defined periodically on the sheets to provide pouches to retain the tablets. The tablets are usually conveyed while resting on their broad surfaces, and reach a chute, where the tablets drop vertically down-ward and are then canveyed between the package sheets as 1~ they are brought together to seal off the pouch area.
During the foregoing procedure, the tablets occasionally tend to stack or ride upon each other in the course of the verti-cal drop into position between the package sheets. This occurrence, known as "shimming" is undesirable and can cause jamming of the packaging machinery, so that the machinery must be shut down to remove the extra tabTets from the pouch. Naturally, such difficulties are time consuming and add to manufacturing expense.
It therefore exists to correct the difficulties recognized in the prior art, to provide a tablet that reduces packaging costs, by reducing both the s;ze and thickness of the packag-ing materials, as well as a reduction in the inc;dence of package failure. Also, it would be desirable to prepare a tablet that reduces or eliminates the occurrence of "shimming"
during packaging.
~`'' ' ' .
5~
SUMMARY OF TIIE INVENTION
In accordance with -the presen-t invention, a -table-t having an improved conf:igura-tion for more economical sealable packaging and reduced spoilacJe, comprises paired broad outer surfaces generally opposed to each other and terminating in substantially parallel, spaced apart surface perimeters, at least one of -the surfaces extending convexly away from the other and defining a central convex section, and a perime-trically adjacent peripheral convex section. A continuous rim extends transversely between the surface perimeters and preferably defines a cylinder~
In a preferred embodiment, both broad outer surfaces extend convexly and cooperate -to define a bi-convex configuration.
The table-t of the present invention preferably comprises paired broad outer surfaces that ex-tend convexly away from each other, with each outer surface ha~ing respective convex sections defining exterior sur~aces dis-posed a-t an angle of at least, and preferably cJreater than, 180 wi-th respect to each o-ther. A continuous ridge is preferably defined on the exterior of the broad outer surfaces at the junction of the central and peripheral convex section, and this outer edge defines the tablet point bend, i.e. the point at which the walls of the pouch containing the tablet are drawn toward adhesive contact with each other. Preferably, the walls and the outer surfaces of the peripheral convex sec-tions subtend between them an acute angle, which more preferably may be less than ~5.
The inven-tion also relates to a sealably packaged tablet which comprises, in combination, an essen-tially planar -tablet package prepared from opposed packacJe sheets peripherally adhered to each other ancl defining periodic:~lly between them, centrally disposed, air-tight tablet pouches containing the -tablets of the invention as described above. The present mab/ i 5~
packaged tablet utilizes a pouch that is reduced in size while retaining the capability for holding a tablet havin~
equivalent weight and content to ~hose of the prior art.
The invention also includes a method for preparing an im-5 proved tablet, comprising compressing the material to be prepared in tablet form within a tablet die defining broad outer surfaces of which at least one and preferably two are concave in configuration, and thereby adapted to form a tablet ~ having broad outer surf3;ces of convex shape. Preferably, both 10 1~ broad surfaces of the ~ are concave, and a tablet having bi-convex configuration is formed~ Furthera the die may be configured to correspond in shape to the tablet configura tions set forth above.
Tablets prepared in accordance with the invention per~i~
packaging material to be reduced in amount by as much as 20 to 25% in size, while package sheet thickness may be reduced as much as 30%. Also, tablets of the present configuration resist breakage and spalling during manufacture and shippinga and the packaging machinery jamming is reduced due to a cor-.responding reduction in the incidence of "shimming".
.
The present invention is applicable to tablets for a varietyof uses extending from medicinal compounds to household goodsO
The exact angulation and size of individual tablets will be governed by the materials being formed, however the basic convex configuration is utilized in each instance.
Accordingly, it is a principal object of the present inven-t;on to provide a tablet having at least one broad outer surface with a convex cor,figuration.
It is a ~urther object of the present invention to provide a tablet as aforesaid which realizes a savings in packaging material.
5~
It is a fur~her object of the present invention to provide a tablet as aforesaid which offers improved strength and econ~my of processing.
It is a yet further object of the present invention to pro-vide a method for preparing a tablet comprising forming the broad surfaces of the tablet in convex relationship to each otherO
Other objects and advantages will become apparent to those skilled in the art from a review of the ensuing description which proceeds with reference to the following illustrative drawings.
,~
BRIEF DESCRIPTION OF THE DRAWINGS
- Figure 1 is a perspective view of a table~ prepared in accordance with the present invention.
~.
Figure 2 is a side view illustrating -the tablet of Figure 1O
Figure 3A is a side sectional view illustrating a tablet prepared in accordance with the prior art, enclosed in a sealed package.
Figure 38 is a side sectional view similar to Figure 3A
illustrating the tablet of the present inventionO
Figure 4A is a top view partly in phantom illustrating the tablet shown in Figure 3A.
Figure 4B is a top view partly in phantom illustrating the tablet o~ Figure 3B.
2~ Figures 5 and 6 are side views illustrating tablets in accordance with alternate embodiments of the present inven-tion.
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FicJure 7 is a slde sectional view i:Llus-trating an alternate tablet within a packacJe.
Fic~ure 8 is a perspective view o~ a fur-ther alternate embodimen-t of -the presen~ invention.
ic3ure 9 is a perspective view of a further embodiment of the present invention.
Figure 10 is a perspective view of a further embodiment of the present invention.
D3~TAILED DESCRIPTION
Referring to the drawings, wherein like numerals designate like parts, and particularly to Figures 1 and 2, tablet 10 comprises pa red broad outer surfaces 12 generally opposed to each other and terminatinc3 in substantially parallel spaced apar-t surface perimeters 14. A continuous rim 16 extends transversely between surface perimeters 1~
as shown, and may preferably define a cylinder as shown in certain of the Figures.
As shown in Figures 1 and 2, both surfaces may be convexly extended; however, the invention includes the instance where only one surface 12 is convex, and this will be described with reference to Eigure 7, later on Broad surfaces 12, when convexly extended as shown, comprises a central convex sec-tion 18 and a peripheral convex section 20 -that is located annularly adjacent to it.
Preferably, sections 18 and 20 are integral with each other, and may, as shown in Figures 6 and 7 ex-tend continuously w:ith each other. Alternately, convex sections 18 and 20 may define ex-terior surEaces that are disposed at an angle with respec-t to each other that may preferably be c3rea~er than 180.
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In particular, and with reEerence to Figure 2, an angle ~ is shown that is deEined by the exterior surfaces of convex sections 18 and 20.
In a further aspect of the present invention, convex section 20 may define a beveled surface that conforms to the frustum mb/ ~) - 7a -i2S a of a cone, in the instance where -tablet 10 is circular in shape. Similarly, convex section 18, while graduated at a differing angle of inclination than that of section 20, may define in one embodiment an essentially conical con-figuration. The shape of respective convex sections 18 and 20 may accordingly vary, and, for example, as illustrated in Figure 8, convex section 18' may deEine a shape that is essentially pyramidal, in combination with the essentially frustoconical shape of section 20. The invention contemplates a variety of shape combinations within its scope, and should not be limited to specific combinations illustrated herein.
Referring further to Figures 1 and 2, in the instance where convex sections 18 and 20 differ in slope as shown, they define at their junction a continuous ridge 22 which, in the illustra-tions herein may comprise a circle. The invention includes ridges having oval, square, rectangular, and other shapes wi-thin its scope.
One of the importan-t aspects of the present invention comprises the configuration of the peripheral convex section 20. In particular, and with reference to ; Figure 2-3B, one of the advantages of the present con-figura-tion is that it reduces the strain on the packaging material in the instance where -the tablet is sealably packaged within two parallel package sheets, and permits reductions in both packaging sheet gauge and size, as will be more particularly explained.
Referring to Figure 3B, a packaged tablet is shown which comprises table-t 10 disposed within a package 2fi consisting of paired, opposed package sheets 26 that have been peripherally bonded to each other, and in their non-bonded area, define a ~; mab/~
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g package pouch 28 to hold the ~ablet. Correspondingly, Fig-ure 3A i11ustrates a packaged tablet in accordance with the prior art, and tablet 30 illustrated therein is thus enclosed within a tablet package 32 prepared from paired sheets 34 likewise peripherally bonded to deFine a central package pouch 36.
The differences between the respective packages include certain visual distinctions that are readily apparent. For example~
tablet 30 utilizes essentially flat broad outer surfaces Both packages utilize an identical angle of taper of the package sheets to the point of sealable engagement. In each instance, an acute angle, labeled ~`is defined between respect-iYe sheets 26 in Figure 3B, and 34 in Figure 3A. Referring back to Figure 2, the exterior surfaces of peripheral con-1~ vex sections 20 preferably define an acute angle corresponding - to angle ~ and therefore labeled identically, to facilitate the reduction in the size of pouch 28.
More specifically, the taper of sheets 26 and 34, respectively3 begins at the tablet point bends 38 and 40, which mark the point at which the taper of the packaging sheets is set to occur. In both instances, the identical angle o~ taper ls utilized, and it can be seen that the tablet of the present invention permits the taper to commence earlier, thereby per-mitting the pouch 28 to be defined within a smaller area9 and ~r correspondingly to define a reduced volume. The configurationof tablet 10 permits the same amount of tablet material to be contained within this smaller pouch, as that contained within pouch 36 holding tablet 30. Referring now to Figures 4A and 4B, comprising plan views partly in phantom of corresponding ~igures 3A and 3B, it can be seen that the pouch 28 is reduced in area from that of pouch 36 and a corresponding reduction is possible in the overall size of sheet 26 from that of sheet 34. It should be noted, that this reduction in packaging material is possible without the requirement of a decrease in 5 :~
the diame-ter of the respec-tive -table-ts. Thus, the surEace perimeter 1~ of table-t 10 is equal in size to the surface perimeter 42 of -tablet 30, with the difference in the size and location of -the respective tablet point bends 38 and ~0, accounting for the decrease in the size of pouch 28 over pouch 36.
In addition to the reduction in the si~e of the packaging material, it has been found that the sheet ma-terial itself may be reduced in gauge, as the overall convexity of the outer surfaces 12 reduces -the strain on the sheet materials that is normally imposed at the tablet point bend in the instance where the tablet is flat-faced, as illus-trated in Figures 3A and 4A. The size of the external angle that is subtended by the central and peripheral convex sections, de-termined with the tablet point bend 38 as its apex, is thus less than the corresponding external angle that is disposed with tablet point bend ~0 as its apex, in Figure 3A. The package sheet 26 is therefore less likely to rup-ture than corresponding package sheet 3~, due to the configuration of respective tablets 10 and 30. Thus, while package sheet 3~ has conventionally been prepared to a -thickness of .001 gauge, package sheet 26 may be utilized at a reduced thickness of .0007 gauge, and provides suf-ficient package strength and integrity, -to resis-t rupture and premature pac]cage leakage.
Several o-ther advantages have also been found with the employment of the tablets of -the presen-t invention.
The problem referred to earlier with respect to tablet packaging, comprising the -tendency of table-ts -to s-tac}c or "shim" during conveyance to the package pouch, has been virtually eliminated by the provision of the tapered sur-faces of the convex broad outer surfaces 12. The -tapered surfaces of the tablets allow them to slide apart from each other so that individual -tablets may be efficien-tly packaged without jamming package machinery.
. -- 10 --mab/ ~ ~
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Also, the outer shape of the tablets confers a further un-expected advantage, in the instance where the tablet includes a cleansing composition that operates when the tablet is dissolved to form a cleansing solution, such as in the instance where denture cleansers, toilet bowl cleaners and the like are prepared. When the tablet is dropped into the solution 5 the tendency is genera~ly for the tablet to come to rest at the bottom of the container, resting on one of its broad surfaces.
ln the instance where the broad surfaces are flat, the surface area of the tablet available for interaction with the liquid in the container is ~imited, as the surface in contact with the bottom o~ the container is unexposed. By contrast, the present tablet configuration presents tapered broad surfaces, that would extend away from the bottom of the container and 1~ permit the liquid in the container to make surface contact to accelerate the disintegration of the tablet.
The method for preparing the tablet of the present invention comprises the preparation and use of tablet dies defining concave broad surfaces that correspond in shape to the con-vex broad outer surfaces desîred in the tablet. Thus, eitherone or both of the broad outer surfaces may be defined in corresponding concavities within the tablet die, so that the appropriately configured tablets may be ~repared. In other respects, tablet preparation does not differ from that of the prior art, as conventional tableting agents may be employed~
and convent;onal forming pressures, etc. may be utilized.
It is advisable to prepare the tablets of the present inven-tion with essentially flat rims 16~ ~as this prevents the occurrence of "shingling", ~ the surface dis-continuities that sometimes are formed when the tablet edgeis rounded.
The tablets of the present invention may vary widely in exact shape, so long as at least one o~ the broad outer surfaces is s~s~l convexly extended as described. PreFerably, the broad outPr surfaces are symmetrically convex.
The exact size of central convex section 18 may vary within the scope of the invention, and may accordingly range in size from 20X to 80b in radius, of the total radius of the broad outer surface 12. Preferably, the central convex section may range in size from 30 to 70% of the total radius, and most preferably ranges from 50% to 65X. Also, in the instance where the tablet possesses a configuration similar to that of Figure 1, with a continuous ridge 22, the location of ridge 22 naturally may vary, depending upon the size of the central convex section.
.
Referring now to Figure 5, the variation in the s;ze of the respective convex sections is illustrated, as periphera~
convex section 20 appears larger than in Figure 2~ while central convex section 18 is reduced. In Figure 6, a variant tablet 44 is shown which utilizes broad surfaces 46 that taper in convexity, so that the central convex section and the peripheral convex section are continuous with each other~
All of the above variations are within the scope of the present invention.
A further embodiment is illustrated in Figure 7, wherein a tablet 48 is prepared which utilizes a single convex broad outer surface 50. This embodimen~ is specifically utilized in the instance where a package such as package 52 is em-ployed. In such packages, only one of the sheets is expanded and forms a pouch, and thus a flat sheet 54 has adhesively bound thereto convexly expanded sheet 56, which deFines the recess forming the tablet pouch 58. In this instance, it is desirable to provide a flat broad outer surface as shown, s~
however the advantages noted above with respect to the bi-convex tablet also obtaln in the instance ~here the single conYex surface is employed.
Figures Y and 10 illustrate a further embodiment~ wherein the tablet is essentially rectangular ;n shape. Referrillg to Figure 9, tablet 10" defines paired broad outer surfaces 12", w~ich can be seen to be convex, in similar fashion to surfaces 12 of F;gure 1. Thus, surfaces 12" are comprised of central con~ex sections 18", and peripheral convex sec-lû tions 20" lying adjacent thereto. The separating ridge 22"may vary in configuration from that of a circle, illustrated in Figure 1 and Figure 9 herein, to that of a rectangle fol-lowing essentially in parallel fashion surface perimeter 14".
In the former ~nstance, peripheral convex section 20" appears as four triangular subsections e~ually distributed in the corners - of the rectan~ular perimeter 14", while in Figure 10, peripheral convex section 20" is essentially rectangular and frames central convex section 18".
The tablets of Figures 9 and 10 are further variant in the .20 .configuration of the rim 16", as it can be seen to vary in thickness from a minimal thickness at the cor~e~ of~hç tablet9 to a maximum thickness at the points centrally ~fY-i}~ the corners. .
.
The provision of a tablet in rectanyular configuration as 25 shown can be appreciated.to make further econom;c use of the , package pouch, as, in the instance where the po.uch is rec-. tangular, the shape of the tablet assures complete utilizationof defined space. The other advantages discussed above with respect to the tablet of the present invention are equally demonstrated by this further embodiment, as the convex dis-tention of the broad outer surfaces 12" reduces the strain ......................................... ~.. ;
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that is normally imposed upon the package pouch.
As noted ear1ier, the tablets prepared in accordance with the present invention may contain a variety of ingredients for vari 0~5 uses, including household and medicinal application.
The present tab~et con~igurations are partioularly useful in the instance where tablets are prepared for use as denture cleansers, toilet bowl cleaners and the like. In such in-stances, the table~ forming mater;al may include active ingred-ients such as cleansers, pharmaceutical compositions, and the like, again depending upon the particular utility of the tablet.
While there have been herein shown -and described the pre-ferred embodiment of the present invention, it will be under-stood that the invention may be embodied otherwise than as herein specifically illustrated or described, and that within such embodiment certain changes in the detail and construction, and the ~orm and arrangement of the parts may be made without departing from the underlying idea or principles of the in-vention within the scope of the appended claims.
- BACKGROUND OF THE INVENTION
Field of the Invention The present invention relates to the manufacture o~ tablets, and more particularly to the manufacture of tablets to be sealed in pouches defined by paired sheet materials.
Description of the Prior Art:
Most tablets, whether for medicinal purposes or otherwise, are manufactured with essentially the same basic shape of essentially flat broad surfaces. In many instances, such as when the tablets contain some active chemical agent, they are desirably vacuum sealed withîn sheet-like - packaging ;n sandwich relationship, in such manner that the sheets converge to form a pouch about the tablet defin-ing a perimeter generally corresponding to a circle.
Conventional tablet shape is defined in cross-section by essentially flat, parallel broad surfaces, sometimes defining at the circumferential periphery a slight bevel, that has been provided primarily to minimize tablet edge fracture.
20 The high cost of raw materials9 including packaging materials has prompted consideration of ways to reduce incidental costs to keep down the ultimate cost of the tablet product. Consideration has therefore recently been - given to a reduction ;n the packaging material requirements for tablets, and a review of the prior art tablet discloses a substantial amount of unused space in the package pouch.
In particular, the unused space or wastage is most apparent when the tablet is of increased thickness, the latter to assure sufficient tablet strength during manufacture and shipping. Also, in the instance where the tablet is of ,~
s~ `
--3~
increased ~hickness and is packaged by sealing within pouches formed by parallel sheet materials, the conventional tablet configuration has been found to.exert a strain on the pack-age that causes ~he seals between the package sheets to rup-ture~ with the result that product shelf life is reduced andspoilage may occur.
Another problem that has existed concerns the packaging of the tablets. Generally, tablét packaging is performed by the adhesive bonding of parallel sheets of packaging ma-terial, with non-bonded areas defined periodically on the sheets to provide pouches to retain the tablets. The tablets are usually conveyed while resting on their broad surfaces, and reach a chute, where the tablets drop vertically down-ward and are then canveyed between the package sheets as 1~ they are brought together to seal off the pouch area.
During the foregoing procedure, the tablets occasionally tend to stack or ride upon each other in the course of the verti-cal drop into position between the package sheets. This occurrence, known as "shimming" is undesirable and can cause jamming of the packaging machinery, so that the machinery must be shut down to remove the extra tabTets from the pouch. Naturally, such difficulties are time consuming and add to manufacturing expense.
It therefore exists to correct the difficulties recognized in the prior art, to provide a tablet that reduces packaging costs, by reducing both the s;ze and thickness of the packag-ing materials, as well as a reduction in the inc;dence of package failure. Also, it would be desirable to prepare a tablet that reduces or eliminates the occurrence of "shimming"
during packaging.
~`'' ' ' .
5~
SUMMARY OF TIIE INVENTION
In accordance with -the presen-t invention, a -table-t having an improved conf:igura-tion for more economical sealable packaging and reduced spoilacJe, comprises paired broad outer surfaces generally opposed to each other and terminating in substantially parallel, spaced apart surface perimeters, at least one of -the surfaces extending convexly away from the other and defining a central convex section, and a perime-trically adjacent peripheral convex section. A continuous rim extends transversely between the surface perimeters and preferably defines a cylinder~
In a preferred embodiment, both broad outer surfaces extend convexly and cooperate -to define a bi-convex configuration.
The table-t of the present invention preferably comprises paired broad outer surfaces that ex-tend convexly away from each other, with each outer surface ha~ing respective convex sections defining exterior sur~aces dis-posed a-t an angle of at least, and preferably cJreater than, 180 wi-th respect to each o-ther. A continuous ridge is preferably defined on the exterior of the broad outer surfaces at the junction of the central and peripheral convex section, and this outer edge defines the tablet point bend, i.e. the point at which the walls of the pouch containing the tablet are drawn toward adhesive contact with each other. Preferably, the walls and the outer surfaces of the peripheral convex sec-tions subtend between them an acute angle, which more preferably may be less than ~5.
The inven-tion also relates to a sealably packaged tablet which comprises, in combination, an essen-tially planar -tablet package prepared from opposed packacJe sheets peripherally adhered to each other ancl defining periodic:~lly between them, centrally disposed, air-tight tablet pouches containing the -tablets of the invention as described above. The present mab/ i 5~
packaged tablet utilizes a pouch that is reduced in size while retaining the capability for holding a tablet havin~
equivalent weight and content to ~hose of the prior art.
The invention also includes a method for preparing an im-5 proved tablet, comprising compressing the material to be prepared in tablet form within a tablet die defining broad outer surfaces of which at least one and preferably two are concave in configuration, and thereby adapted to form a tablet ~ having broad outer surf3;ces of convex shape. Preferably, both 10 1~ broad surfaces of the ~ are concave, and a tablet having bi-convex configuration is formed~ Furthera the die may be configured to correspond in shape to the tablet configura tions set forth above.
Tablets prepared in accordance with the invention per~i~
packaging material to be reduced in amount by as much as 20 to 25% in size, while package sheet thickness may be reduced as much as 30%. Also, tablets of the present configuration resist breakage and spalling during manufacture and shippinga and the packaging machinery jamming is reduced due to a cor-.responding reduction in the incidence of "shimming".
.
The present invention is applicable to tablets for a varietyof uses extending from medicinal compounds to household goodsO
The exact angulation and size of individual tablets will be governed by the materials being formed, however the basic convex configuration is utilized in each instance.
Accordingly, it is a principal object of the present inven-t;on to provide a tablet having at least one broad outer surface with a convex cor,figuration.
It is a ~urther object of the present invention to provide a tablet as aforesaid which realizes a savings in packaging material.
5~
It is a fur~her object of the present invention to provide a tablet as aforesaid which offers improved strength and econ~my of processing.
It is a yet further object of the present invention to pro-vide a method for preparing a tablet comprising forming the broad surfaces of the tablet in convex relationship to each otherO
Other objects and advantages will become apparent to those skilled in the art from a review of the ensuing description which proceeds with reference to the following illustrative drawings.
,~
BRIEF DESCRIPTION OF THE DRAWINGS
- Figure 1 is a perspective view of a table~ prepared in accordance with the present invention.
~.
Figure 2 is a side view illustrating -the tablet of Figure 1O
Figure 3A is a side sectional view illustrating a tablet prepared in accordance with the prior art, enclosed in a sealed package.
Figure 38 is a side sectional view similar to Figure 3A
illustrating the tablet of the present inventionO
Figure 4A is a top view partly in phantom illustrating the tablet shown in Figure 3A.
Figure 4B is a top view partly in phantom illustrating the tablet o~ Figure 3B.
2~ Figures 5 and 6 are side views illustrating tablets in accordance with alternate embodiments of the present inven-tion.
s~
FicJure 7 is a slde sectional view i:Llus-trating an alternate tablet within a packacJe.
Fic~ure 8 is a perspective view o~ a fur-ther alternate embodimen-t of -the presen~ invention.
ic3ure 9 is a perspective view of a further embodiment of the present invention.
Figure 10 is a perspective view of a further embodiment of the present invention.
D3~TAILED DESCRIPTION
Referring to the drawings, wherein like numerals designate like parts, and particularly to Figures 1 and 2, tablet 10 comprises pa red broad outer surfaces 12 generally opposed to each other and terminatinc3 in substantially parallel spaced apar-t surface perimeters 14. A continuous rim 16 extends transversely between surface perimeters 1~
as shown, and may preferably define a cylinder as shown in certain of the Figures.
As shown in Figures 1 and 2, both surfaces may be convexly extended; however, the invention includes the instance where only one surface 12 is convex, and this will be described with reference to Eigure 7, later on Broad surfaces 12, when convexly extended as shown, comprises a central convex sec-tion 18 and a peripheral convex section 20 -that is located annularly adjacent to it.
Preferably, sections 18 and 20 are integral with each other, and may, as shown in Figures 6 and 7 ex-tend continuously w:ith each other. Alternately, convex sections 18 and 20 may define ex-terior surEaces that are disposed at an angle with respec-t to each other that may preferably be c3rea~er than 180.
b / ~ /~ i') 5~
In particular, and with reEerence to Figure 2, an angle ~ is shown that is deEined by the exterior surfaces of convex sections 18 and 20.
In a further aspect of the present invention, convex section 20 may define a beveled surface that conforms to the frustum mb/ ~) - 7a -i2S a of a cone, in the instance where -tablet 10 is circular in shape. Similarly, convex section 18, while graduated at a differing angle of inclination than that of section 20, may define in one embodiment an essentially conical con-figuration. The shape of respective convex sections 18 and 20 may accordingly vary, and, for example, as illustrated in Figure 8, convex section 18' may deEine a shape that is essentially pyramidal, in combination with the essentially frustoconical shape of section 20. The invention contemplates a variety of shape combinations within its scope, and should not be limited to specific combinations illustrated herein.
Referring further to Figures 1 and 2, in the instance where convex sections 18 and 20 differ in slope as shown, they define at their junction a continuous ridge 22 which, in the illustra-tions herein may comprise a circle. The invention includes ridges having oval, square, rectangular, and other shapes wi-thin its scope.
One of the importan-t aspects of the present invention comprises the configuration of the peripheral convex section 20. In particular, and with reference to ; Figure 2-3B, one of the advantages of the present con-figura-tion is that it reduces the strain on the packaging material in the instance where -the tablet is sealably packaged within two parallel package sheets, and permits reductions in both packaging sheet gauge and size, as will be more particularly explained.
Referring to Figure 3B, a packaged tablet is shown which comprises table-t 10 disposed within a package 2fi consisting of paired, opposed package sheets 26 that have been peripherally bonded to each other, and in their non-bonded area, define a ~; mab/~
! ~ ~ 9 S25~
g package pouch 28 to hold the ~ablet. Correspondingly, Fig-ure 3A i11ustrates a packaged tablet in accordance with the prior art, and tablet 30 illustrated therein is thus enclosed within a tablet package 32 prepared from paired sheets 34 likewise peripherally bonded to deFine a central package pouch 36.
The differences between the respective packages include certain visual distinctions that are readily apparent. For example~
tablet 30 utilizes essentially flat broad outer surfaces Both packages utilize an identical angle of taper of the package sheets to the point of sealable engagement. In each instance, an acute angle, labeled ~`is defined between respect-iYe sheets 26 in Figure 3B, and 34 in Figure 3A. Referring back to Figure 2, the exterior surfaces of peripheral con-1~ vex sections 20 preferably define an acute angle corresponding - to angle ~ and therefore labeled identically, to facilitate the reduction in the size of pouch 28.
More specifically, the taper of sheets 26 and 34, respectively3 begins at the tablet point bends 38 and 40, which mark the point at which the taper of the packaging sheets is set to occur. In both instances, the identical angle o~ taper ls utilized, and it can be seen that the tablet of the present invention permits the taper to commence earlier, thereby per-mitting the pouch 28 to be defined within a smaller area9 and ~r correspondingly to define a reduced volume. The configurationof tablet 10 permits the same amount of tablet material to be contained within this smaller pouch, as that contained within pouch 36 holding tablet 30. Referring now to Figures 4A and 4B, comprising plan views partly in phantom of corresponding ~igures 3A and 3B, it can be seen that the pouch 28 is reduced in area from that of pouch 36 and a corresponding reduction is possible in the overall size of sheet 26 from that of sheet 34. It should be noted, that this reduction in packaging material is possible without the requirement of a decrease in 5 :~
the diame-ter of the respec-tive -table-ts. Thus, the surEace perimeter 1~ of table-t 10 is equal in size to the surface perimeter 42 of -tablet 30, with the difference in the size and location of -the respective tablet point bends 38 and ~0, accounting for the decrease in the size of pouch 28 over pouch 36.
In addition to the reduction in the si~e of the packaging material, it has been found that the sheet ma-terial itself may be reduced in gauge, as the overall convexity of the outer surfaces 12 reduces -the strain on the sheet materials that is normally imposed at the tablet point bend in the instance where the tablet is flat-faced, as illus-trated in Figures 3A and 4A. The size of the external angle that is subtended by the central and peripheral convex sections, de-termined with the tablet point bend 38 as its apex, is thus less than the corresponding external angle that is disposed with tablet point bend ~0 as its apex, in Figure 3A. The package sheet 26 is therefore less likely to rup-ture than corresponding package sheet 3~, due to the configuration of respective tablets 10 and 30. Thus, while package sheet 3~ has conventionally been prepared to a -thickness of .001 gauge, package sheet 26 may be utilized at a reduced thickness of .0007 gauge, and provides suf-ficient package strength and integrity, -to resis-t rupture and premature pac]cage leakage.
Several o-ther advantages have also been found with the employment of the tablets of -the presen-t invention.
The problem referred to earlier with respect to tablet packaging, comprising the -tendency of table-ts -to s-tac}c or "shim" during conveyance to the package pouch, has been virtually eliminated by the provision of the tapered sur-faces of the convex broad outer surfaces 12. The -tapered surfaces of the tablets allow them to slide apart from each other so that individual -tablets may be efficien-tly packaged without jamming package machinery.
. -- 10 --mab/ ~ ~
s~
Also, the outer shape of the tablets confers a further un-expected advantage, in the instance where the tablet includes a cleansing composition that operates when the tablet is dissolved to form a cleansing solution, such as in the instance where denture cleansers, toilet bowl cleaners and the like are prepared. When the tablet is dropped into the solution 5 the tendency is genera~ly for the tablet to come to rest at the bottom of the container, resting on one of its broad surfaces.
ln the instance where the broad surfaces are flat, the surface area of the tablet available for interaction with the liquid in the container is ~imited, as the surface in contact with the bottom o~ the container is unexposed. By contrast, the present tablet configuration presents tapered broad surfaces, that would extend away from the bottom of the container and 1~ permit the liquid in the container to make surface contact to accelerate the disintegration of the tablet.
The method for preparing the tablet of the present invention comprises the preparation and use of tablet dies defining concave broad surfaces that correspond in shape to the con-vex broad outer surfaces desîred in the tablet. Thus, eitherone or both of the broad outer surfaces may be defined in corresponding concavities within the tablet die, so that the appropriately configured tablets may be ~repared. In other respects, tablet preparation does not differ from that of the prior art, as conventional tableting agents may be employed~
and convent;onal forming pressures, etc. may be utilized.
It is advisable to prepare the tablets of the present inven-tion with essentially flat rims 16~ ~as this prevents the occurrence of "shingling", ~ the surface dis-continuities that sometimes are formed when the tablet edgeis rounded.
The tablets of the present invention may vary widely in exact shape, so long as at least one o~ the broad outer surfaces is s~s~l convexly extended as described. PreFerably, the broad outPr surfaces are symmetrically convex.
The exact size of central convex section 18 may vary within the scope of the invention, and may accordingly range in size from 20X to 80b in radius, of the total radius of the broad outer surface 12. Preferably, the central convex section may range in size from 30 to 70% of the total radius, and most preferably ranges from 50% to 65X. Also, in the instance where the tablet possesses a configuration similar to that of Figure 1, with a continuous ridge 22, the location of ridge 22 naturally may vary, depending upon the size of the central convex section.
.
Referring now to Figure 5, the variation in the s;ze of the respective convex sections is illustrated, as periphera~
convex section 20 appears larger than in Figure 2~ while central convex section 18 is reduced. In Figure 6, a variant tablet 44 is shown which utilizes broad surfaces 46 that taper in convexity, so that the central convex section and the peripheral convex section are continuous with each other~
All of the above variations are within the scope of the present invention.
A further embodiment is illustrated in Figure 7, wherein a tablet 48 is prepared which utilizes a single convex broad outer surface 50. This embodimen~ is specifically utilized in the instance where a package such as package 52 is em-ployed. In such packages, only one of the sheets is expanded and forms a pouch, and thus a flat sheet 54 has adhesively bound thereto convexly expanded sheet 56, which deFines the recess forming the tablet pouch 58. In this instance, it is desirable to provide a flat broad outer surface as shown, s~
however the advantages noted above with respect to the bi-convex tablet also obtaln in the instance ~here the single conYex surface is employed.
Figures Y and 10 illustrate a further embodiment~ wherein the tablet is essentially rectangular ;n shape. Referrillg to Figure 9, tablet 10" defines paired broad outer surfaces 12", w~ich can be seen to be convex, in similar fashion to surfaces 12 of F;gure 1. Thus, surfaces 12" are comprised of central con~ex sections 18", and peripheral convex sec-lû tions 20" lying adjacent thereto. The separating ridge 22"may vary in configuration from that of a circle, illustrated in Figure 1 and Figure 9 herein, to that of a rectangle fol-lowing essentially in parallel fashion surface perimeter 14".
In the former ~nstance, peripheral convex section 20" appears as four triangular subsections e~ually distributed in the corners - of the rectan~ular perimeter 14", while in Figure 10, peripheral convex section 20" is essentially rectangular and frames central convex section 18".
The tablets of Figures 9 and 10 are further variant in the .20 .configuration of the rim 16", as it can be seen to vary in thickness from a minimal thickness at the cor~e~ of~hç tablet9 to a maximum thickness at the points centrally ~fY-i}~ the corners. .
.
The provision of a tablet in rectanyular configuration as 25 shown can be appreciated.to make further econom;c use of the , package pouch, as, in the instance where the po.uch is rec-. tangular, the shape of the tablet assures complete utilizationof defined space. The other advantages discussed above with respect to the tablet of the present invention are equally demonstrated by this further embodiment, as the convex dis-tention of the broad outer surfaces 12" reduces the strain ......................................... ~.. ;
~.~9~5~ ~
that is normally imposed upon the package pouch.
As noted ear1ier, the tablets prepared in accordance with the present invention may contain a variety of ingredients for vari 0~5 uses, including household and medicinal application.
The present tab~et con~igurations are partioularly useful in the instance where tablets are prepared for use as denture cleansers, toilet bowl cleaners and the like. In such in-stances, the table~ forming mater;al may include active ingred-ients such as cleansers, pharmaceutical compositions, and the like, again depending upon the particular utility of the tablet.
While there have been herein shown -and described the pre-ferred embodiment of the present invention, it will be under-stood that the invention may be embodied otherwise than as herein specifically illustrated or described, and that within such embodiment certain changes in the detail and construction, and the ~orm and arrangement of the parts may be made without departing from the underlying idea or principles of the in-vention within the scope of the appended claims.
Claims (38)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A tablet having an improved shape for more economical sealable packaging, comprising:
a. paired broad outer surfaces generally opposed to each other and terminating in substantially parallel, spaced-apart perimeters, at least one of said broad outer surfaces being distended convexly away from the other and having a central convex section and a peripheral convex section disposed perimetrically adjacent thereto, the external angle between the central convex section and the peripheral convex section being greater than or equal to 180°; and b. a continuous rim extending transversely between the surface perimeters of the broad outer surfaces.
a. paired broad outer surfaces generally opposed to each other and terminating in substantially parallel, spaced-apart perimeters, at least one of said broad outer surfaces being distended convexly away from the other and having a central convex section and a peripheral convex section disposed perimetrically adjacent thereto, the external angle between the central convex section and the peripheral convex section being greater than or equal to 180°; and b. a continuous rim extending transversely between the surface perimeters of the broad outer surfaces.
2. The tablet of claim 1, wherein both of said broad outer surfaces are distended convexly away from each other and cooperate to define a bi-convex configuration.
3. The tablet of claim 1 or 2, wherein said continuous rim defines a cylinder.
4. The tablet of claim 2, wherein said broad outer surfaces are symmetrically convexly distended away from each other.
5. The tablet of claim 1 or 2, wherein said convex sections are integral and continuous with each other.
6. The tablet of claim 1 or 2, further com-prising a continuous ridge defined on the exterior of said convexly distended broad outer surfaces at the junction of said central and said peripheral convex sections.
7. The tablet of claim 1 or 2, wherein said peripheral convex section defines an essentially frusto-conical shape.
8. The tablet of claim 1 or 2, wherein said central convex section defines an essentially conical shape.
9. The tablet of claim 1 or 2, wherein said central convex section defines an essentially pyramidal shape.
10. The tablet of claim 2, wherein the outer surfaces of the peripheral convex sections subtend between them an acute angle.
11. The tablet of claim 10, wherein said acute angle is less than 45°.
12. The tablet of claim 2, wherein the radius of the central convex section ranges from 20% to 80% of the total radius of said broad outer surface.
13. The tablet of claim 12, wherein the radius of said central convex section ranges from 30% to 70%.
14. The tablet of claim 11, wherein the radius of said central convex section ranges from 50% to 65%.
15. The tablet of claim 1 or 2, including a household cleaning composition therein.
16. The tablet of claim 1 or 2, including a medicinal compound therein.
17. A sealably packaged tablet comprising, in combination:
a. a tablet package comprising opposed, conformable package sheets peripherally adhered to each other, and defining centrally between them an air-tight tablet pouch; and b. a tablet comprising paired broad outer surfaces generally opposed to each other and terminating in substantially parallel, spaced apart surface perimeters, at least one of said broad outer surfaces being distended convexly away from the other and having a central convex section and a pheripheral convex section disposed peri-metrically adjacent thereto, the external angle between the central convex section and the peripheral convex section being greater than or equal to 180°, and a continuous rim extending transversely between the surface perimeters of the broad outer surfaces;
whereby the shape of the tablet, when combined with conformable package sheets, permits the tablet pouch to be reduced in size and thickness without rupture.
a. a tablet package comprising opposed, conformable package sheets peripherally adhered to each other, and defining centrally between them an air-tight tablet pouch; and b. a tablet comprising paired broad outer surfaces generally opposed to each other and terminating in substantially parallel, spaced apart surface perimeters, at least one of said broad outer surfaces being distended convexly away from the other and having a central convex section and a pheripheral convex section disposed peri-metrically adjacent thereto, the external angle between the central convex section and the peripheral convex section being greater than or equal to 180°, and a continuous rim extending transversely between the surface perimeters of the broad outer surfaces;
whereby the shape of the tablet, when combined with conformable package sheets, permits the tablet pouch to be reduced in size and thickness without rupture.
18. The combination of claim 17, wherein both of said broad outer surfaces are distended convexly away from each other and cooperate to define a bi-convex con-figuration.
19. The combination of claim 17 or 18, wherein said continuous rim defines a cylinder.
20. The combination of claim 18, wherein said broad outer surfaces are symmetrically convexly distended away from each other.
21. The combination of claims 17 or 18, wherein said convex sections are integral and continuous with each other.
22. The combination of claim 17 or 18, further comprising a continuous ridge defined on the exterior of said convexly distended broad outer surfaces at the junction of said central and said peripheral convex sections.
23. The combination of claim 17 or 18, wherein said peripheral convex section defines an essentially frustoconical shape.
24. The combination of claim 17 or 18, wherein said central convex section defines an essentially conical shape.
25. The combination of claim 17 or 18, wherein said central convex section defines an essentially pyramidal shape.
26. The combination of claim 18, wherein the outer surfaces of the peripheral convex sections subtend between them an acute angle.
27. The combination of claim 26, wherein said acute angle is less than 45°.
28. The combination of claim 18, wherein the radius of the central convex section ranges from 20% to 80%
of the total radius of said broad outer surface.
of the total radius of said broad outer surface.
29. The combination of claim 28, wherein the radius of said central convex section ranges from 30% to 70%.
30. The combination of claim 27, wherein the radius of said central convex section ranges from 50% to 65%.
31. The combination of claim 17 or 18, including a household cleaning composition therein.
32. The combination of claim 17 or 18, including a medicinal compound therein.
33. The combination of claim 17, wherein said sheets are prepared from a material comprising aluminum foil.
34. The combination of claim 33, wherein said foil is of a thickness on the order of 0.0007'' gauge.
35. A method for preparing a tablet having an improved surface configuration comprising compressing the material to be tabletted within a form having at least one broad concave surface shaped such that it will produce a tablet having at least one broad outer surface distended convexly away from its other broad surface and having a central convex and a peripheral convex section disposed perimetrically adjacent thereto, the external angle between the central convex section and the peripheral convex section being greater than or equal to 180°.
36. The method of claim 35, wherein the form has two opposed broad concave surfaces shaped such that it will produce a tablet having two convex broad outer surfaces.
37. The tablet of claim 1 or 2, wherein the central convex section has a frusto-geometrical shape.
38. The combination of claim 17 or 18, wherein the central convex section has a frusto-geometrical shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28521281A | 1981-07-20 | 1981-07-20 | |
| US285,212 | 1981-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1195251A true CA1195251A (en) | 1985-10-15 |
Family
ID=23093259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000406939A Expired CA1195251A (en) | 1981-07-20 | 1982-07-09 | Convex tablet configuration |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0070720B1 (en) |
| JP (1) | JPS5824515A (en) |
| AT (1) | ATE22797T1 (en) |
| AU (2) | AU8614282A (en) |
| CA (1) | CA1195251A (en) |
| DE (1) | DE3273729D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7087242B2 (en) | 1989-04-28 | 2006-08-08 | Mcneil-Ppc, Inc. | Subcoated simulated capsule-like medicament |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999055823A1 (en) * | 1998-04-27 | 1999-11-04 | The Procter & Gamble Company | Coated non-particulate detergent product having contoured surface |
| DE19860189C1 (en) * | 1998-12-24 | 2000-03-30 | Henkel Kgaa | Surfactant-containing detergent tablets having convex or concave surface to give improved strength and more rapid decomposition, used in rinse chamber of conventional domestic textile washing machines |
| EP1159391B1 (en) * | 1999-03-10 | 2005-11-16 | Unilever Plc | Detergent tablets |
| EP1043390A1 (en) * | 1999-04-09 | 2000-10-11 | The Procter & Gamble Company | Detergent tablet |
| CA2479735C (en) * | 2002-03-20 | 2011-05-17 | Elan Pharma International Ltd. | Fast dissolving dosage forms having reduced friability |
| DE10258870B4 (en) * | 2002-12-17 | 2005-04-07 | Henkel Kgaa | Large volume detergent tablets |
| DE10310887A1 (en) | 2003-03-11 | 2004-09-30 | Covion Organic Semiconductors Gmbh | Matallkomplexe |
| DE10313172B4 (en) * | 2003-03-25 | 2007-08-09 | Henkel Kgaa | Shape-optimized detergent tablets |
| JP2005145821A (en) * | 2003-11-11 | 2005-06-09 | Kao Corp | Tablet preparation |
| CA2614547C (en) * | 2005-07-08 | 2014-10-21 | Takeda Pharmaceutical Company Limited | Tablet |
| MY154023A (en) * | 2009-04-22 | 2015-04-30 | Kyowa Chem Ind Co Ltd | Tablet and pestle therefor |
| RS57482B1 (en) | 2011-11-15 | 2018-10-31 | Henkel Ag & Co Kgaa | Air dehumidifier |
| CR20160601A (en) | 2014-05-27 | 2017-07-19 | As Ip Holdco Llc | SANITARY CLEANING SYSTEM |
| US10465366B2 (en) | 2014-05-27 | 2019-11-05 | As America, Inc. | Sanitaryware cleaning system |
| CA3049027A1 (en) | 2017-01-25 | 2018-08-02 | As America, Inc. | Sanitaryware cleaning system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE779427A (en) * | 1972-02-16 | 1972-06-16 | Aspro Nicholas Ltd | Compressed tablets of special shape - to facilitate packing |
| GB2048158A (en) * | 1979-04-30 | 1980-12-10 | Rca Corp | Apparatus and method for molding a preform |
| ZA813205B (en) * | 1980-12-05 | 1983-03-30 | Smith Kline French Lab | Dosage units |
-
1982
- 1982-07-09 CA CA000406939A patent/CA1195251A/en not_active Expired
- 1982-07-19 JP JP57124552A patent/JPS5824515A/en active Pending
- 1982-07-19 EP EP82303769A patent/EP0070720B1/en not_active Expired
- 1982-07-19 AU AU86142/82A patent/AU8614282A/en not_active Abandoned
- 1982-07-19 AT AT82303769T patent/ATE22797T1/en active
- 1982-07-19 DE DE8282303769T patent/DE3273729D1/en not_active Expired
-
1985
- 1985-03-28 AU AU40498/85A patent/AU563670B2/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7087242B2 (en) | 1989-04-28 | 2006-08-08 | Mcneil-Ppc, Inc. | Subcoated simulated capsule-like medicament |
Also Published As
| Publication number | Publication date |
|---|---|
| AU563670B2 (en) | 1987-07-16 |
| DE3273729D1 (en) | 1986-11-20 |
| ATE22797T1 (en) | 1986-11-15 |
| EP0070720B1 (en) | 1986-10-15 |
| AU8614282A (en) | 1983-05-12 |
| EP0070720A1 (en) | 1983-01-26 |
| AU4049885A (en) | 1985-09-19 |
| JPS5824515A (en) | 1983-02-14 |
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