US3317108A

US3317108A - Helically wound container

Info

Publication number: US3317108A
Application number: US543450A
Authority: US
Inventors: William E Cheeley
Original assignee: Reynolds Metals Co
Current assignee: Reynolds Metals Co
Priority date: 1966-03-25
Filing date: 1966-03-25
Publication date: 1967-05-02
Anticipated expiration: 1984-05-02

Description

y 2, 1967 w. E. CHEELEY HELICALLY WOUND CONTAINER Original Filed March 21, 1962 5 Sheets-Sheet l INVENTOR WILLIAM ECHEELEY A I m t I I 1!:

HIS ATTORNEYS y 2, 1967 w. E. CHEELEY HELICALLY WOUND CONTAINER 5 Sheets-Sheet 2 Original Filed March 21, 1962 m nwww A fl//% /////4 %%A// www INVENTOR WILLIAM E.CHEELEY BY 24 I W 4 K HIS ATTORNEY 5 Sheets-Sheet 3 INVENTOR WILLIAM ECHEELEY k/mv HIS ATTORNEYS y 1967 w. E. CHEELEY HELICALLY WOUND CONTAINER Original Filed March 21, 1962 May 2, 1967 w. E. CHEELEY HELIGALLY WOUND CONTAINER 5 Sheets-Sheet 4 Original Filed March 21, 1962 mm @Q INVENTOR WILLIAM E. CHEELEY w )f/mv HIS ATTORNEYS y 1967 w. E. CHEELEY HELICALLY WOUND CONTAINER 5 Sheets-Sheet 5 Original Filed March 21, 1962 m w a m United States Patent 3,317,108 I-ELICALLY WOUND CONTAINER William E. Cheeley, Bon Air, Va., assignor to Reynolds Metals Company, Richmond, Va., a corporation of Delaware Continuation of abandoned application Ser. No. 181,415, Mar. 21, 1962. This application Mar. 25, 1966, Ser. No. 543,450

4 Claims. (Cl. 229-45) This application is a continuation of application Ser. No. 181,415, filed Mar. 21, 1962, and now abandoned.

This invention relates to improved helically wound containers and to improved methods and apparatus for making such containers or the like.

Heretofore, helically wound containers have normally been formed by first helically winding a relatively thin strip of lining material on a stationary cylindrical man drel with adjacent edges of adjacent convolutions overlapping each other and being secured together by a suitable adhesive to provide a spiral seam.

Thereafter, one or more strips of container body material, such as paperboard and the like, are helically wound and secured to the helically wound lining material.

Subsequently, a strip of wrapping material is helically wound and secured to the helically wound container body material to complete the container body, the adjacent edges of adjacent convolutions of the wrapping material overlapping each other and being secured together by a suitable adhesive to provide a spiral seam.

After the cylindrical container body has been formed in the above manner, the opposed opened ends thereof can be subsequently closed by metal end closures or the like.

The lining and wrapping materials each normally comprises a lamination of a strip of metallic foil and a strip of paper backing material whereby the foil forms the exterior and interior surfaces of the container body to not only prevent any moisture from the product packaged therein from reaching the container body material but to also prevent any moisture on the exterior of the container body from reaching the container body material.

However, it has been found that exposed raw edges of the paper backing of thelining and wrapping material at the spiral seams of the container body tend to wick moistureinto the container body material whereby the moisture causes deterioration of the container body and the like.

However, according to the teachings of this invention, improved containers of the above type are provided wherein the above wicking problem is eliminated.

Accordingly, it is an object of this invention to provide improved helically wound containers or the like.

Another object of this invention is to provide improved methods for making such containers or the like.

A further object of this invention is to provide improved apparatus for making such containers or the like.

Other objects, uses and advantages of this invention are apparent from a reading of this description, which proceeds with reference to the accompanying drawings forming a part thereof and wherein:

FIGURE 1 is an exploded perspective view illustrating an improved container of this invention.

FIGURE 2 is a schematic perspective view illustrating lice the method and apparatus for forming the container of FIGURE 1.

FIGURE 3 is an axial cross-sectional view taken on line 3-3 of FIGURE 2 and illustrates a strip of material of this invention.

FIGURE 4 is a view similar to FIGURE 3 and is taken on line 4-4 of FIGURE 2.

FIGURE 5 is a view similar to FIGURE 3 and is taken on line 5-5 of FIGURE 2.

FIGURE 6 is an enlarged, fragmentary, cross-sectional view of the container body and is taken on line 6-6 of FIGURE 2.

FIGURE 7 is a view similar to FIGURE 2 and illustrates another method and apparatus of this invention.

FIGURES 8-10 are respectively cross-sectional views of various strips of material and are respectively taken on lines 8-8, 9-9 and 10-10 of FIGURE 7.

FIGURE 11 is an enlarged, fragmentary, cross-sectional view of the container body of this invention that is formed by the apparatus and method of FIGURE 7 and is taken on line 11-11 of FIGURE 7.

FIGURE 12 is a view similar to FIGURE 2 and illustrates another method and apparatus of this invention.

FIGURES 13-15 are respectively cross-sectional views of various strips of material of this invention and are respectively taken on lines 13-13, 14-14 and 15-15 of FIGURE 12.

FIGURE 16 is an enlarged, fragmentary, cross-sectional view of the container body of this invention that is formed by the apparatus and method of FIGURE 12 and is taken on line 16-16 of FIGURE 12.

FIGURE 17 is a view similar to FIGURE 2 and illustrates another method and apparatus of this invention.

FIGURES 18-20 are respectively cross-sectional views illustrating the strips of material of this invention and are' respectively taken on lines 18-18, 19-19 and 20-20 of FIGURE 17.

FIGURE 21 is an enlarged, fragmentary, cross-sectional view of the container body of this invention that is formed by the apparatus and method of FIGURE 17 and is taken on line 21-21 of FIGURE 17.

FIGURE 22 is a view similar to FIGURE 2 and illustrates another method and apparatus of this invention.

FIGURES 23-25 are respectively cross-sectional views of various strips of material of this invention and are respectively taken on lines 23-23, 24-24 and 25-25 of FIGURE 22.

FIGURE 26 is an enlarged, fragmentary, cross-sectional view of the container body of this invention that is formed by the apparatus and method of FIGURE 22 and is taken on line 26-26 of FIGURE 22.

While the various features of this invention are hereinafter described and illustrated as forming particular containers and the like, it is to be understood that the various features of this invention can be utilized for other purposes as desired.

Therefore, this invention is not to be limited to only the embodiments thereof illustrated in the drawings, because the drawings are merely utilized to illustrate one of the wide variety of uses of this invention.

Referring now to FIGURE 1, an improved container of this invention is generally indicated by the reference numeral 30 and comprises a hollow cylindrical container body 31 adapted to have the opposed opened ends 32 thereof closed by suitable end closures 33 in a manner well known in the art.

The container body 31 can comprise a six ounce size whereby the overall length of the container body 31 is approximately 3.875 inches and the inside diameter thereof is approximately 2.062 inches. However, it is to be understood that the size of the container bodies of this invention can vary, as desired, and that this invention is not limited to any particular size. Therefore, the size of the various strips of material of this invention are merely hereinafter given to represent one size that is adaptable to produce such a six-ounce container.

The container bodies 31 of this invention are formed by the method and apparatus of this invention generally indicated by the reference numeral 34 in FIGURE 2.

In particular, the apparatus 34 comprises a stationary mandrel 35 secured in cantilevered fashion to a supporting structure 36 at one end 37 thereof whereby the other end 38 of the mandrel 35 is disposed remote from the supporting structure 36.

A relatively narrow and relatively thin strip of material 39 is angularly fed onto the mandrel 35 from a free-wheeling supply roll 40 whereby the strip material 39 is continuously helically wound on the mandrel 35 with adjacent convolutions thereof being widely spaced apart on the mandrel 35 a distance predetermined by the size of a relatively wide strip of lining material 41 being angularly fed onto the mandrel 35 from a freewheeling supply roll 42 in a manner hereinafter described.

The strip of material 39 preferably comprises moisture barrier material that will prevent the aforementioned wicking action.

For example, the strip of material 39 can comprise a lamination of cellophane 43 and aluminum foil 44 laminated together by a suitable adhesive. The aluminum foil can be between approximately 0.0003 and 0.00035 of an inch in thickness whereby approximately 29,300 square inches of the foil 44 weighs a pound. In addi' tion, the strip of material 39 can be coated with a suitable coating that prevents or minimizes the attack of inks by methanol at P. which some packers utilize to freeze citrus concentrate.

The strip of material 39 is helically wound on the mandrel 35 in such a manner that the foil side 44 thereof faces outwardly from the mandrel 35 and is treated in such a manner that the same is adapted to adhere to similarly treated foil surfaces by a suitable adhesive.

As the strip of material 39 is helically wound onto the mandrel 35, the same passes through a nip of pair of rollers 45 and 46 whereby the roller 45 receives suitable adhesive from a reservoir 47 and applies the same to the foil side 44 of the strip of material 39, the roller 46 backing up the strip of material 39 at the adhesive applying zone to prevent damage to the strip of material 39.

Therefore, it can be seen that not only is the relatively thin strip of metallic foil 44 backed up by the roll 46, but also the thin strip of metallic foil 44 is backed up by the strip of cellophane 43 so that the strip of material 39 can be readily helically wound on the mandrel 35 and have adhesive applied to the foil side 44 thereof.

The strip of lining material 41 is helically wound onto the mandrel 35 in such a manner that the adjacent edges 48 and 49 of adjacent convolutions thereof are disposed adjacent to each other and are overlapped and secured together by the adhesive on the helically Wound strip of material 39.

For example, the strip of material 39 is so helically wound onto the mandrel 35 that the edge 48 of the strip of lining material 41 substantially bisects the helically wound strip of material 39 as illustrated in FIGURE 2 so that adjacent halves of the strip of material 39 are respectively secured to adjacent convolutions of the helically wound strip of lining material 41.

The lining material 41 is preferably provided with a moisture barrier surface that cooperates with the strip of material 39 to form the interior surface of the container bodies 31. For example, the strip of lining material 41 can comprise a lamination of a strip of metallic foil 50 laminated to a strip of paper backing material 51 by a suitable adhesive.

In particular, the strip of metallic foil 50 can be approximately 0.00035 of an inch thick and paper backing material 51 can comprise a 20 pound kraft paper liner laminated to the metallic foil strip 50 by polyethylene or the like. Preferably, the exposed surface of the strip of metallic foil 50 is coated with a slip material, such as a polyvinyl coating, to readily permit the helically wound strip of lining material 41 to be rotated and axially advanced on the mandrel 35 in a manner hereinafter described.

A strip of container body material 52 is angularly fed onto the helically wound strip of lining material 41 from a free-wheeling supply roll 53, the container body material 52 having adjacent edges 54 and 55 of adjacent convolutions thereof disposed adjacent to each other with the strip of container body material 52 preferably overlapping the spiral seam of the lining material 41.

As the strip of container body material 52 is angularly fed onto the mandrel 35, the undersurface thereof passes over a suitable adhesive applicator roller 56 receiving suitable adhesive from a reservoir 57 whereby the strip of container body material 52 is secured to the helically wound lining material 41.

Another strip of container body material 58 is angularly fed onto the helically wound str'p of container body material 52 from a free-wheeling supply roll 59 with adjacent edges 60 and 61 of adjacent convolutions thereof disposed adjacent to each other and preferably with the strip of container body material 58 overlapping the spiral seam of the helically wound container body material 52.

As the strip of container body material 58 is fed to the mandrel 35, the undersurface thereof receives a coating of adhesive from an adhesive applicator roller 62 receiving adhesive from a reservoir 63.

While the

container body materials

52 and 58 can comprise any suitable material or combination of materials, the embodiment thereof illustrated in the drawings comprises paperboard material of approximately 32 pounds per thousand square feet thereof.

While the container body 31 of this invention is illustrated as being formed from two strips of

container body material

52 and 58, it is to be understood that one or more strips of container body material may be provided to form the desired thickness of the container body 31 as well as the strength thereof.

A strip of wrapping material 64 is angularly fed onto the helically wound strip of container body material 58 from a free-wheeling supply roll 65 in such a manner that adjacent edges 66 and 67 of adjacent convolutions of the wrapping material 64 overlapped each other in the manner illustrated in FIGURE 6.

Preferably the strip of wrapping material 64 overlaps the spiral seam of the container body material 58.

The strip of wrapping material 64 passes over a suitable adhesive applicator roller 68 receiving adhesive from a reservoir 69 whereby the wrapping material 64 is secured to the helically wound strip of container body material 58 to complete the container body stock 31.

While the wrapping material 64 can be formed in any suitable manner and preferably have an outer moisture barrier surface of any desired type, the embodiment thereof illustrated in the drawing comprises a strip of metallic foil 70 laminated to a strip of paper backing material 71 by a suitable adhesive.

For example, the strip of metallic foil 70 can comprise aluminum-containing metallic foil or the like having the exterior surface thereof suitably shellacked to receive a vinyl type coating which is alcohol resistant and thus receptive to printing or the like, such as rotogravure printing. The strip of foil 70 can be approximately 0.00035 of an inch thick and be laminated to the strip of paper backing material 71 by a suitable adhesive, the

paper backing material 71 comprising a 20 pound kraft.

paper liner or the like.

The strip of wrapping material 64 completes the container ibody stock 31 whereby the container body stock 31' is continuously rotated and axially advanced on the mandrel 35 by a continuous crossed belt 72 having a portion 73 thereof looped around the container body stock 31' so that continuous movement of the belt 72 in the direction indicated by the arrows causes the container body stock 31' to be rotated and axially advanced on the mandrel 35 in the manner well known in the art.

In this manner, the belt 72 continuously draws and helically winds the

strips

39, 41, 52, 58 and 64 onto the mandrel 39 to continuously form the container body stock 31'. 1

As the container body stock 31' passes beyond the free end 38 of the mandrel 35, the same can be cut into desired lengths by a suitable cutter 74 in a manner well known in the art.

Therefore, it can be seen that the resulting container bodies 31 each have a substantially moisture proof interior surface as illustrated in FIGURE 6 because the strip of material 39 completely covers the spiral seam 75 defined by adjacent convolutions of the lining material 41 whereby no wicking action can take place at the raw edges of the paper backing material 51 of the lining material 41 as in prior known containers to cause deterioration of the

cotnainer body material

52 and 58.

When forming the container bodies 31 into the aforementioned six ounce container size, the strip of material 39 can have a width of approximately 0.375 of an inch and spiral length of approximately 6.270 inches; the strip of lining material can have a width of approximately 4.375 inches and a spiral length of approximately 6.270 inches; the strip of container body material 52 can have a width of approximately 4.000 inches and a spiral length of approximately 6.291 inches; the strip of container body material 58 can have a width of approximately 4.000 inches and a spiral length of approximately 6.342 inches; and the strip of wrapping material 64 can have a width of approximately 4.375 inches and a spiral length of approximately 6.394 inches.

Another apparatus and method of this invention is illustrated in FIGURE 7 and is generally indicated by the reference numeral 76, the apparatus 76 having parts thereof similar to the apparatus 34 of FIGURE 2 whereby like reference numerals followed by the reference letter a are utilized to designate like parts.

The apparatus 76 is adapted to produce container bodies 31a of this invention as illustrated in FIGURE 11 'by first helically winding the strip of lining material 41a onto the mandrel 35a in such a manner that the edges 48a and 49d of adjacent convolutions thereof are disposed closely adjacent to each other,'the lining material 41a being continuously drawn from the free-wheeling supply roll 42a by the aforementioned continuous belt 72a.

The lining material 41a can be substantially the same as the lining material 41 of FIGURE 2 and comprises a lamination of a strip of metallic foil 50a and a strip of paper backing material 51a as illustrated in FIGURE 8, the exposed surface of the strip of metallic foil 50a being suitably coated with a slip material so that the lining material 41a'can be readily rotated and axially advanced on the mandrel 35a.

The relatively narrow and thin strip of material 39a is angularly fed onto the helically wound strip of lining material 41a in such a manner from the free-wheeling supply roll 40:: that the strip of material 39a completely overlaps the spiral seam 77 defined between the

adjacent edges

48a and 49a of adjacent convolutions of the strip of lining material 41a.

The strip of material 39a passes over a suitable adhesive roller 78 receiving adhesive from a reservoir 79 so that the undersurface of the strip of material 39a will be secured by the adhesive to the

adjacent edges

48a and 49a of adjacent convolutions of the lining material 41a.

The strip of material 39a can be substantially the same as the strip of material 39 of FIGURE 2 and comprises a lamination of strip of aluminum foil 44a laminated by a suitable adhesive to a strip of cellophane 43a or the like, the strip of material 39a being wound on the helically wound lining material 41a with the foil side 44a thereof facing the paper terial 41a.

Subsequently, the strips of container body material 52a and 58a are helically wound onto the helically wound strips of

lining material

41a and 39a in the manner previously described to form the structural strength and thickness of the container body stock 31a.

Thereafter, the strip of wrapping material 64:: is helically wound onto the helically wound container body material 58a and secured thereto by a suitable adhesive with adjacent edges 66a and 67a of the wrapping material 64a secured together in overlapping relation.

The rotating and axially advancing container body stock 31a is cut in desired lengths by the cutter 74a whereby complete containers can be formed from the container bodies 31a.

The strips of container body material 52a and 58a can comprise paperboard material in a manner similar to the container body materials 52 and 28 of FIGURE 2 while the wrapping material 64a can comprise a lamination of a strip of metallic foil 70a and a strip of paper backing material 71a in a manner similar to the wrapping material 64 of FIGURE 2.

Therefore, it can be seen that the completed container body 31a has the spiral seam 77 of the lining material 41a fully protected by the strip of material 39a so that any moisture present in the container body 31a is prevented from seeping through the spiral seam 77 to the container body material 52a and 58a by the moisture impervious surface of the strip of material 39a.

When forming the aforementioned six ounce containers from the container bodies 31a, the widths and spiral lengths of the strips of

material

39a, 41a, 52a, 58a and 64a can be the same as the strips of

material

39, 41, 52, 58 and 64.

Another container body of the invention is generally indicated by the reference numeral 31b in FIGURE 16 and is formed by the method and apparatus illustrated in FIGURE 12 and generally indicated by the reference numeral 80, the apparatus 80 being substantially identical to the apparatus 34 of FIGURE 2 whereby like parts thereof are designated by like reference numerals followed by the reference letter b.

As illustrated in FIGURE 12, the relatively thin and relatively narrow strip of material 3% is first angularly fed onto the mandrel 35b from a free-wheeling supply roll 40b with adjacent convolutions of the helically wound strip of material 39b spaced apart a distance sufficient to overlap adjacent edges 81 and 82 of a relatively wide strip of material 83 subsequently angularly fed onto the mandrel 35b from a free-wheeling supply roller 84 in a manner hereinafter described.

The strip of material 3% can be formed in a manner similar to the material 39 of FIGURE 2 and comprises a lamination of a strip of cellophane 43b secured to a strip of metallic foil 44b by a suitable adhesive whereby the foil surface 44b receives a suitable adhesive as the same passes through the nip of the rollers 45b and 46b, the adhesive applicator roller 45b receiving backing material 51a of the lining ma board 86 by a suitable adhesive, the exposed surface of the foil 85 being suitably coated with a slip material to facilitate rotation and axial advancement of the container body stock 31b on the mandrel 35b. The strip of foil 85 can be approximately 000035 of an inch thick and the paperboard 86 can be of material that weighs approximately 32 lbs. per thousand square feet of the paperboard material.

After the strip of material 83 has been helically wound onto the helically wound strip of material 39b, a strip of container body material 52b is angularly fed onto the helically wound strip of material 83 and secured thereto by a suitable adhesive applied to the undersurface of the container body material 52b by an adhesive applicator roller 56b receiving suitable adhesive from a reservoir 57b, the container body material 52b being drawn from a free-wheeling supply roll 53b and being formed of material substantially similar to the material 52 previously described.

A strip of Wrap-ping material 64b is angularly fed onto the rotating and axially advancing helically wound container body material 52b and is secured thereto by a suitable adhesive applied to the undersurface of the wrapping material 64b by an adhesive applicator roller 68b receiving suitable adhesive from a reservoir 6%, the wrapping material 64b :being drawn from a free-wheeling supply roll 65b and having the adjacent edges 66b and 67b secured in overlapping relation to complete the container body stock 31b.

The strips of

material

39b, 83, 52b and 64b are continuously drawn onto the mandrel 35b by the crossed continuous belt 72b in the manner previously described whereby the cutter 74b can cut the container body stock 31b into desired lengths to subsequently form containers from the container bodies 31b.

Therefore, it can be seen that the strip of material 39b prevents moisture from the interior of the container body 31b from seeping into the spiral seam 115, defined by the strip of material 83, and wi-cking into the paperboard material 86 of the strip of material 83 as well as into the container body material 52b.

When forming the aforementioned six ounce containers from the container bodies 31b, the strips of material 39b, 52b and 64b can have the same widths and spiral lengths as the strips of

material

39, 52 and 64 previously described while the strip of material 83 has a width of approximately 4.000 inches and a spiral length of approximately 6.291 inches.

Another container body of this invention is generally indicated by the reference numeral 31c in FIGURE 21 and is formed by the apparatus and method illustrated in FIGURE 17 and generally indicated by reference numeral 116, the apparatus 116 having parts thereof similar to the apparatus 34 of FIGURE 2 and designated by like reference numerals followed by the reference letter dc-3! As illustrated iin FIGURE 17, a relatively thin and relatively narrow strip of mate-rial 390 is angul'arly fed onto the mandrel 35c from a free-wheeling supply roll 40c whereby adjacent convolutions of the helically wound strip of material 39c are disposed apart a distance sulfi- -cient to completely overlap the

adjacent edges

87 and 88 of adjacent convolutions of a relatively wide strip of material 89 angularly fed onto the mandrel 350 from a free-wheeling supply roll 90.

The strip of material 390 can be formed in the same manner as the material 39 and comprises a lamination of a strip of cellophane 430 secured to a strip of metallic foil 440 by a suitable adhesive whereby the foil side 44c thereof receives a suitable adhesive from an adhesive applicator roller 45c receiving adhesive from a reservoir 47c as the strip of material 390 passes through the nip of the rollers 45c and 46c.

The wide strip of material 89 that is subsequently helically wound on the helically wound strip of material 39c can comprise any suitable material whereby the undersurface thereof is substantially moisture impervious.

For example, the strip of material 89 can comprise a strip of metallic foil 91 having a thickness of approximately 0.00035 of an inch laminated by a suitable adhesive to a 24 point bendiing news board 92 or the like, the exposed surface of the strip of foil 91 being suitably coated with slip material so that the subsequently formed container body stock 31c can be easily rotated and axially advanced on the mandrel 35c.

Subsequently, a second narrow strip of material 93 is angularly fed onto the helically Wound strip of material 89 in such a manner that the strip of material 93 completely overlaps and secures together

adjacent edges

87 and 88 of adjacent convolutions of the strip of material 89.

The strip of material 93 is drawn from a free-wheeling supply roll 94 and has the undersurface thereof coated with a suitable adhesive as the strip of material 93 passes over an adhesive applicator roller 95 receiving suitable adhesive from a reservoir 96.

While the strip of material 93 can comprise any desired material, the embodiment thereof illustrated in the drawing comprises kraft paper having a weight of approximately 25 lbs. per ream thereof and having high wet strength characteristics.

Subsequently, a strip of wrapping material 640 is angularly fed onto the helically wound strips of

material

89 and 93 and secured thereto with

adjacent edges

66c and 670 of the wrapping material 64c secured in overlapping relation.

The strip of wrapping material 64c is drawn from a free-Wheeling supply roll 65c and has the undersurface thereof coated with a suitable adhesive as the strip of wrapping material 640 passes over an adhesive applicator roller 68c receiving adhesive from a reservoir 69a.

The wrapping material 640 can be similar to the wrapping material 64 and comprises a lamination of a strip of metallic foil 70c laminated by a suitable adhesive to a strip of paper backing material 710.

The strips of

material

390, 89, 93 and 640 are continuously drawn onto the mandrel 35c by the continuous crossed belt 72c in the manner previously described whereby a suitable cutter 740 can cut the rotating and axially advancing container body stock 310 into desired lengths to form the container bodies 310 of this invention.

Therefore, it can be seen that each of the container bodies 310 utilize the strip of material 390 to prevent interior moisture from seeping into the spiral seam 97, defined by the

adjacent edges

87 and 88 of adjacent convolutions of the strip of material 89, and reaching the paperboard material 92 of the strip of material 89 to cause deterioration thereof.

Further, the second narrow strip of material 93 further assists the strip of material 390 in holding the strip of material 89 in its helically wound condition.

When forming the aforementioned six ounce containers from the container bodies 310, the strips of material 390 and Me can have the same widths and spiral lengths as the strips of

material

39 and 64 while the strip of material 89 has a width of approximately 4.000 inches and a spiral length of approximately 6.342 inches and the strip of material 93 has a width of approximately 0.375 of an inch and a spiral length of approximately 6.394 inches.

Another container body of this invention is generally indicated by the reference numeral 31d in FIGURE 2 6 and is made by the method and apparatus illustrated in FIGURE 22 and generally indicated by the reference numeral 98, the apparatus 98 being similar to the apparatus 34 of FIGURE 2 whereby like parts are designated by like reference numerals followed by the reference letter d.

As illustrated in FIGURE 22, a relatively thin and relatively narrow strip of material 39d is first angularly fed onto the mandrel 35d from a free-wheeling supply roll 40d in such a manner that adjacent convolutions of the helically wound strip of material 39d are spaced apart a distance sufficient to overlap and secure together adjacent edges 99 and 1000f a relatively wide strip of material 101 helically wound onto the mandrel 35d from a free-wheeling supply roll 102 in a manner hereinafter described.

The strip of material 39d can be formed in a manner similar to the material 39 and comprises a lamination of a strip of cellophane 43d and a strip of metallic foil 44d secured together by a suitable adhesive.

As the strip of material 39d is drawn onto the mandrel 35d by the crossed belt 72d, the foil face 44d thereof receives a coating of adhesive from an adhesive applicator roller 45d receiving adhesive from a suitable reservoir 47d as the strip 39d passes through the nip of the

rollers

45d and 46d.

The wide strip of material 101 can comprise any suitable material, and, in the embodiment illustrated in the drawings, the strip of material 101 comprises a strip of bending news board 103 having strips of metallic foil 104 and 105 secured to opposed surfaces of the strip of news board 103 by a suitable adhesive, the strip of metallic foil 105 cooperating with the strip 39d to form the moisture impervious interior surface of the container bodies 31d while the strip of metal foil 104 forms part of the moisture impervious exterior surface of the container bodies 31d.

The exposed surface of the strip 104 of metallic foil forming the strip of material 101 has been suitably shellacked to receive a scufi resistant vinyl coating to permit the exterior surface of the strip of material 101 to be receptive to printing or the like.

The foil strip 105 of the strip of material 101 is provided with a suitable slip material to permit the strip of material 101 to be readily rotated and axially advanced upon the mandrel 35d.

A second narrow strip of material 106 is angularly fed onto the rotating and axially advancing helically wound strip of material 101 in such a manner that the strip 106 overlaps and secures together the

adjacent edges

99 and 100 of adjacent convolutions of the strip of material 101.

The strip of material 106 is drawn from a free-wheeling supply roll 107 over an adhesive applicator roller 108 receiving suitable adhesive from a reservoir 109 whereby the strip of material 106 can be secured by the adhesive coating to the strip of material 101.

While the strip of material 106 can comprise any suitable material, it is preferred that the exterior surface of the strip of material 106 comprise moisture impervious mateial.

For example, the strip of material 106 can comprise a lamination of a strip of metallic foil 110 laminated to a strip of paper backing material 111 by a suitable adhesive, the strip of metallic foil being approximately 0.00035 of an inch thick.

Alternately, the strip of material 106 can comprise a moisture impervious transparent film tape to prevent blocking off of any printed matter on the strip of material 101.

In any event, the cross-belt 72d, when moving in the direction indicated by the arrows, continuously draws the

strips

39d, 101, and 106 onto the mandrel 35d to continuously form the container body stock 31d which can be subsequently cut by the cutter 74d into the desired lengths to form the container bodies 31d.

Therefore, it can be seen that the strip of material 39d prevents moisture and the like from the interior of the container body 31d from seeping into the spiral seam 112 of the helically wound strip of material 101 to cause deterioration of the news board 103 thereof.

Similarly, the strip of material 106 prevents moisture from the exterior of the container body 31d from seeping into the spiral seam 112 of the container body 31d to cause deterioration of the news board 103 thereof. In addition, the strips of

material

39d and 106 provide means for holding the strip of material 101 in its helically wound condition.

In the embodiments of this invention wherein the

narrow tape

39, 39b 39c and 39d is first helically wound onto the respective mandrel, such narrow strip of material greatly reduces the tendency for the subsequent, relatively wide strip of material wound onto the mandrel to create friction between the wide strip of material and the mandrel whereby it is believed that the coating of slip material on the undersurface of the wide strip of material can be eliminated or greatly reduced.

Further, while metallic foil has been specified for forming the moisture impervious surfaces of various strips of material, it is to be understood that any other means to render the desired surfaces moisture impervious can be utilized.

While various strips of material of this invention have been illustrated and described as being prelaminated before these are utilized in the methods and apparatus of this invention, it is to be understood that each laminated strip of material of this invention can be continuously formed as the strip of material is being drawn onto the respective mandrel.

However, one advantage in prelaminating such strips of material is that same can be completely cured before forming the container bodies of this invention to prevent the build-up moisture in the plies thereof which would tend to cause delamination after the container bodies have been formed.

Accordingly, it can be seen that improved containers have been provided by this invention which prevents moisture from the interior of the container bodies from reaching the container body material of the container bodies and causing deterioration thereof.

Further, other containers of this invention are provided which prevent moisture at the exterior of the container bodies from reaching the container body material and causing deterioration thereof.

In addition, improved methods and apparatus are provililed by this invention for making such containers or the li e.

While the form of the invention now preferred has been disclosed as required by statute, other forms may be used, all coming within the scope of the claimed subject matter which follows.

What is claimed is:

1. A container comprising a helically wound wide strip of material having adjacent edges of adjacent convolutions thereof disposed adjacent to each other, said wide strip of material comprising a lamination of paperboard and metallic foil with the foil forming part of the interior and exterior surfaces of said container, a helically wound first narrow strip of material disposed inboard of said wide strip of material and overlapping and securing together said adjacent edges of adjacent convolutions of said wide strip of material, and a helically wound second narrow strip of material disposed outboard of said wide strip of material and overlapping and securing together said adjacent edges of adjacent convolutions of said wide strip of material. 2. A container as set forth in claim 1 wherein said first narrow strip of material comprises a lamination of cellophane and metallic foil with said foil facing the foil of said wide strip of material.

3. A container as set forth in claim 1 wherein said second narrow strip of material comprises a lamination of paper and metallic foil with the paper facing said foil of said wide strip of material.

12 11/1964 Elam 229-4.5 12/1964 Dunlap et a1 229-45 X 12/1964 Taylor 2294.5

FOREIGN PATENTS 10 /1955 France. 6/1963 France.

GEORGE O. RALSTON, Primary Examiner.

Claims

1. A CONTAINER COMPRISING A HELICALLY WOUND WIDE STRIP OF MATERIAL HAVING ADJACENT EDGES OF ADJACENT CONVOLUTIONS THEREOF DISPOSED ADJACENT TO EACH OTHER, SAID WIDE STRIP OF MATERIAL COMPRISING A LAMINATION OF PAPERBOARD AND METALLIC FOIL WITH THE FOIL FORMING PART OF THE INTERIOR AND EXTERIOR SURFACES OF SAID CONTAINER, A HELICALLY WOUND FIRST NARROW STRIP OF MATERIAL DISPOSED INBOARD OF SAID WIDE STRIP OF MATERIAL AND OVERLAPPING AND SECURING TOGETHER SAID ADJACENT EDGES OF ADJACENT CONVOLUTIONS OF SAID WIDE STRIP OF MATERIAL, AND A HELICALLY WOUND SECOND NARROW STRIP OF MATERIAL DISPOSED OUTBOARD OF SAID WIDE STRIP OF MATERIAL AND OVERLAPPING AND SECURING TOGETHER SAID ADJACENT EDGES OF ADJACENT CONVOLUTIONS OF SAID WIDE STRIP OF MATERIAL.