CA2547279C - Synthetic resin heat-resistant bottle type container - Google Patents
Synthetic resin heat-resistant bottle type container Download PDFInfo
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- CA2547279C CA2547279C CA002547279A CA2547279A CA2547279C CA 2547279 C CA2547279 C CA 2547279C CA 002547279 A CA002547279 A CA 002547279A CA 2547279 A CA2547279 A CA 2547279A CA 2547279 C CA2547279 C CA 2547279C
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- CA
- Canada
- Prior art keywords
- container
- pressure reduction
- bottle type
- body part
- absorbing panel
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2501/00—Containers having bodies formed in one piece
- B65D2501/0009—Bottles or similar containers with necks or like restricted apertures designed for pouring contents
- B65D2501/0081—Bottles of non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
A slender synthetic resin heat-resistant bottle type container having a circumferential draw ratio of 2.8 or less, for example, comprises at least one pressure reduction absorbing panel (5) provided at a container body part, wherein the pressure reduction absorbing panel is provided with at least one convex portion (6) having a width larger at a lower side than at an upper side as viewed in a circumferential direction of the container. Alternatively, each pressure reduction absorbing panel has a border line bulged toward a container bottom part. This causes a resin to be smoothly stretched even at mold surface portions corresponding to concave and convex portions of a container body part surface upon blow molding. These avoid a defective appearance of the container and does not adversely affect heat resistance thereof.
Description
SYNTHETIC RESIN HEAT-RESISTANT BOTTLE TYPE CONTAINER
TECHNICAL FIELD
[0001] Tiae present invention relates to a synthetic resin heat-resistant bottle type container, and particularly to a bottle type container having a pluralaty of pressure reduction absorbing panels at a body paxt, BACKGROiJND ART
TECHNICAL FIELD
[0001] Tiae present invention relates to a synthetic resin heat-resistant bottle type container, and particularly to a bottle type container having a pluralaty of pressure reduction absorbing panels at a body paxt, BACKGROiJND ART
[0002] In a synthetic resin heat-resistant bottle having a plurality of pressure reduction absorbing panels at a body part, concave and convex portions are formed on a body part surface to delimit the pressure reduction absorbing panels, respectively. Thus, in blow molding such a bottle, it has been likely that smooth stretching of a resin is obstructed at mold surface portions corresponding to the concave and convex portions of the body part surface.
[0003] Such a pbien,omenon is particularly significaot in slender bottles each having a circumferential draw ratio of 2.8 or less, and particularly 2.65 or less, for example. Here, the "circumferential draw ratio" can be defined as a dimensional ratio between: a diznension from a ceaatral axis of a bottle to a thickness center of a wall face of a body part of the bottle (in case of a rectangular bottle, a wall face of a body part of the bottle except for corner portions thereof); and a dimension from a central axis of a prefom to be used for naolding of the bottle, to a thickness center of a wall face of a body part of the preform.
[0004] Namely, when a body part surface of such a slender bottle is fonned with concave and convex portions that lead to obstructions of a mold inner surface against vectors directed from a mouth part toward a bottom part of the bottle, resin accumulataora, whitening, and the like are frequently caused at mold surface portions correspondiog to the concave and convex portions of the body part surface.
This not only results in a defective appearance of the container but also has an adverse affect on heat resistance thereof.
This not only results in a defective appearance of the container but also has an adverse affect on heat resistance thereof.
[0005] To avoid locally decreased wall thickness caused by stretching of a resin so upon blow molding, JP 2002-255141A proposes a heat-resistant bottle provided with a lateral concave rib along a bouztdary between a shoulder part and a body part of the bottle in amanner that the lateral concave nb has a rib bottom diameter set at 0.85 to 0.92 times an outer diameter of a cylindrical surface of the body part.
04891 (1/10) DISCLOSURE OF THE INVENTION
04891 (1/10) DISCLOSURE OF THE INVENTION
[0006] It is an object of the invention to propose a novel and slender bottle that solves the above-described problems in the related art and allows a resin to smoothly stretch even at mold surface portions corresponding to concave and convex portions of a body part surface upon blow moldin,g. This avoids a defective appearance and does not adversely affect heat resistance of the bottIe.
[0007] The invention resides in a synthetic resin heat-resistaut bottle type container having pressure reduction absorbing panels at a container body part and having a circuwoo.ferential draw ratio of 2.8 or less, for example, wherein the bottle type container comprises at least one convex portion along a wall face of each of the pressure reduction absorbing panels. The convex portion has a width larger at a lower side than at an upper side as viewed in a circuznferential direction of the container.
[0008] Aocord;wg to the above conflguration, the convex portion formed at the wall face of the pressure reductioxn absorbing panel is confzgured to have a width larger at a lower side than at an upper side as viewed in a circumferential direction of the container. Thereby, obstructions against vectors directed from a container mouth part toward a bottom part in a stretching direction of a resiua upon blow molding are rarely caused. This makes it possible to restrict the occurrence of resin accumulation, whitening, and the like, amd to mold the container into a desired wall thickness.
[0009] It is preferable that the at least one convex portion comprises two or more convex portions aligned in a stepwise configuration on the wall face of the pzessure reduction absoxbing panel.
[0010] It is also preferable that the convex portion has ridge lines in an inverted V-shape downwardly widened from a container mouth part toward a bottom part. In this case, it is desirable that the ridge lines define a central angle of 60 to 175 therebetween.
[0011] Instead of the above configuration, it is possible that the convex portion is in a substantially trapezoidal shape having an upper side and a lower side parall.el to each other, the lower side being longer than the upper side. Also, it is desirable that the trapezoid includes opposed sides that are non-parallel to each other and cooperatively define an angle of 60 to 125 therebetween.
04891(2/10) [0012) A resin is more effectively stretched during blow molding when the at least one convex portion comprises two or more convex portions aligned in a stepwise configuration on the wall face of the pressure reduction absorbing panel, and/or when a convex portion is formed at a wall face of the panel having ridge lnes in an inverted V-shape or having a substantaally trapezoidal shape with a lower side longer than an upper side. This assuredly restricts occurrence of resin accumulation, whitening, and the lilre, and molds the cozttaiuer into a desired wa11 thickness.
04891(2/10) [0012) A resin is more effectively stretched during blow molding when the at least one convex portion comprises two or more convex portions aligned in a stepwise configuration on the wall face of the pressure reduction absorbing panel, and/or when a convex portion is formed at a wall face of the panel having ridge lnes in an inverted V-shape or having a substantaally trapezoidal shape with a lower side longer than an upper side. This assuredly restricts occurrence of resin accumulation, whitening, and the lilre, and molds the cozttaiuer into a desired wa11 thickness.
[0013] Further, it is desirable that the pressure reduction absorbing panels each have a border line bulged toward the container bottom part along the wall face of the applicable pressure reduction absorbing panel. Although the boumdary between each pressure reduction absorbinLg panel and the body part at the upper side of the panel is an area where a resin accumulatiort is particularly apt to be caused upon blow molding, the border line at such a site is configured to be bulged toward the wntaine;r bottom part along the wall face of the appllcable panel, thereby enabling effective promotion of uniform stretching of resin.
[0014] It is most effective to combine: the configuration including the convex portion which is provided along a wall face of the pressure reduction absorbing panel and having a width larger at a Iower side than at an upper side as viewed in a circumferential direction of the container; with the configuration including the pressure reduction absorbing panel having the border Ue bulged toward the container bottom part along the wall face of the panel. However, it has been confiixmed that stretching of resin can be promoted to a practically suffxcxent level to thereby practically sufficiently restrict occurrence of resin accuAaulation, even by only one of the configurations.
BRIEF nESCR1PTION OF THE DRA,wINGS
BRIEF nESCR1PTION OF THE DRA,wINGS
[0015] The present invention will be described in more detail with reference to the drawings.
[FIG.1] FIGS. 1A,1B and 1C are a front view, a plan view, and a bottom view of a contaizrer according to an embodiment of the present invention, respectively.
D'1G. 2] FIG. 2 is a cross-sectional view taken long a line II-II of FIG.1A.
[FTG. 3] FIG. 3 is a side view of a preform preferably usable for blow molding of the container according to the present invention.
04841(3/10) [FIG. 4] FIG. 4 is a front view of a container according to another embodiment of the present invention.
[FIG. 5] FIG. 5 is a cross-sectional view taken along line V-V of FIG. 4.
[FIG. fi] FIG. 6 is a front view of a container according to still another embodiment of the present invention.
[FYG. 7] FIG. 7 is a cross-sectional view taken along line VJI-VT.I of FIG. 6.
BEST MODE FOR CA.RRX1NG OUT THE INVENTTQN
[FIG.1] FIGS. 1A,1B and 1C are a front view, a plan view, and a bottom view of a contaizrer according to an embodiment of the present invention, respectively.
D'1G. 2] FIG. 2 is a cross-sectional view taken long a line II-II of FIG.1A.
[FTG. 3] FIG. 3 is a side view of a preform preferably usable for blow molding of the container according to the present invention.
04841(3/10) [FIG. 4] FIG. 4 is a front view of a container according to another embodiment of the present invention.
[FIG. 5] FIG. 5 is a cross-sectional view taken along line V-V of FIG. 4.
[FIG. fi] FIG. 6 is a front view of a container according to still another embodiment of the present invention.
[FYG. 7] FIG. 7 is a cross-sectional view taken along line VJI-VT.I of FIG. 6.
BEST MODE FOR CA.RRX1NG OUT THE INVENTTQN
[0016] FIGS. ZA,1B and 1C show an embodiment of a synthetic resin heat-resist.aat container according to the present invention constituted as a slender rectangular bottle having a filling capacity of about 350 mali.liter and a circumferential draw ratio of 2.8 or less. Reference numerals 1 designate wafl faces constituting a container body part. Reference numerals 2 designate corner portions connectiuog end portions of wall faces 1 to similarly constitute the container body part.
Reference numeral 3 designates a groove portion provided around the container body part. Reference numerals 4 designate upper panels provided at the wall faces I
above the groove portion 3 so as to absorb pressure reduction. Reference nuzuerals 5 deszgtlate lower panels provided at the wall faces I below the groove portion 3 so as to absorb pressure reduction, respectively.
Reference numeral 3 designates a groove portion provided around the container body part. Reference numerals 4 designate upper panels provided at the wall faces I
above the groove portion 3 so as to absorb pressure reduction. Reference nuzuerals 5 deszgtlate lower panels provided at the wall faces I below the groove portion 3 so as to absorb pressure reduction, respectively.
[0017] The upper panels 4 and lower panels 5 are contaected to the containet body part through sidewalls 4a and 5a directed toward an inside of the container, respectively, and edges of the sidewalls 4a and 5a constitute borders of the panels, respectively. Among them, each sidewall 5a positioned at an upper side of the lower panel 5 comprises a partial sphere defined by an arcuate border lime bulged toward a coutauaer bottom part. Namely, each sidewatl 5a located at the upper side of the lower panel 5 has a width larger at an upper side than at a lower side as viewed in a circumferential direction of the container.
[001$] Reference numerals 6 designate convex portions shown as an example as two portions aligned in a central axis direction of the container with a spacing therebetween, at a wall face 5b of the lower panel 5. The convex portions 6 have ridge lines 6a, 6b, respectiveIy, each of which is in an inverted V-shape downwardly widened from a container mouth part toward a bottom part when viewed from a front side of the container. As shown in FIG. 2, the applicable convex portions 6 are continuously art'anged in a stepwise configuration, such that a lower side constituting 04891 (4/10) a cross-section of each convex portion 6 is formed to extend outwardly and upwardly of the body part at an angle of 35 or less relative to a central axis X of the container.
[0019] When using a preform shown in FIG. 3 so as to perform biaxial-stretching blow molding of a slender bottle type container, such as that shown in FIGS. 1A, 1B and 2C, under a molding condition of a smaller circumferential draw ratio (typically, a circumferential draw ratio of 2.8 or less, and particularly 2.65 or less), it is general that a resin is rarely stretched at a lower region of the preform so that an upper region of the preform is brought to contact with a mold surface before the lower region contacts with the mold surface. This results in non-uniformity of the resin stretching between the upper region and lower region thereof, and tends to cause resin accumulation and whitening, which in turn cause a defective appearance.
Nonetheless, the invention has provided the convex portions 6 at the wall faces of the lower panels 5, respectively, with each convex portion 6 having a mountain-like cross-section having a width W larger at a lower side than at an upper side in a circumferential direction. This configuration rarely causes obstructions against vectors directed from the mouth part toward the bottom part in a stretching direction of the resin. Moreover, when the convex portions 6 are each provided to have ridge lines in the inverted V-shape, the resin is smoothly stretched upon blow molding to thereby mitigate or avoid resin accumulation and whitening.
[0020] Particularly, although resin accumulation is apt to be caused at an upper portion of each lower panel 5 upon blow molding, the panel border line at the sidewall 5a at the upper side has an arcuate border line bulged toward the container bottom part. This causes the resin to be more smoothly stretched to thereby more assuredly restrict occurrence of resin accumulation.
[0021] It is preferable for each convex portion 6 to have between its ridge lines a central angle 6 of about 60 to 125 for bringing about smooth stretching of a resin.
[0022] In the above-described embodiment, the convex portions 6 have been shown as examples to include two aligned portions with a spacing therebetween.
Continuously arranging the convex portions 6 in a stepwise configuration as shown in FIG. 2 enables a resin to be more smoothly stretched.
[0023] Of coursethe cooperating convex portions 6 can be increased or decreased in number depending on draw ratios and are not limited two, and the convex portions can be provided not only at the lower panels 5 but also at the upper 04891(5/10) panels 4, respectively.
[0024] In another embodiment shown in FIG. 4 and FIG. 5, convex portions 6 are each conflgured to have a trapezoidal shape having a width larger at a Iower side than at an upper side in a circumferential direction. It is also possible for each convex poxtion 6 to have a sideways fallen trapezoidal shape in a longitudinal cross-section of a container, such that the trapezoid has a side parallel to a central axis X of the container, as a top side of the trapezoid (i.e., as a region most apart from the central axis X of the container). These may obta;in the same effects as the previously described embodiment.
[0025] In still another embodiment shown in FIG. 6 and FIG. 7, convex portions 6 are not provided along wall faces 5b of lower panels 5. However, sidewalls 5a positioned at upper sides of the lower panels 5 each comprise a partial sphere defined by an arcuate border line bulged toward a container bottom part. Namely, each sidewall 5a positioned at the upper side of the lower panel 5 has a width larger at an upper side than at a lower side as viewed in a circumferential direction of the co ntaiuer.
j0026] In case of biaxial-stretching blow molding of the slender bottle type contaiuaer, such as that shown in FIG. 6 and FIG. 7, under a molding coDdition of a smaller caxcumferential draw ratio, each sidewalI 5a bas au arcuate panel border line.
This sufficiently promotes stretching of a resin, thereby making it possible to effectively restrict occurxeiace of resin accumulation, even without provision of convex portiores 6 along the wall faces 5b of the Iower panels 5.
[0027] In any one of the above-described embodiments, each border Iine delimiting the sidewall 5a positioned at the upper side of the lower panel 5 may be in an appropriate shape other than the arcuate shape insofar as it is bulged toward a container bottom part, such as a trapezoidal shape, a V-shape and a U-shape, each having an upper side longer than a lower side.
[00281 According to the invention as described above, it is possible to stably mold an excellent slender bottle capable of avoiding the occurxence of a defective appearance of the botde without adversely affecting heat resistance thereof, by smoothly stretching a resin even at mold surface portions corresponding to concave and convex portions of a body part surface upon blow molding.
[0029] The invention is iaot limited to the above-described embodiments, and 04891 (6/t0) many vat7iations and modifications are possible within the scope of the invention.
U4s91(7/10)
[001$] Reference numerals 6 designate convex portions shown as an example as two portions aligned in a central axis direction of the container with a spacing therebetween, at a wall face 5b of the lower panel 5. The convex portions 6 have ridge lines 6a, 6b, respectiveIy, each of which is in an inverted V-shape downwardly widened from a container mouth part toward a bottom part when viewed from a front side of the container. As shown in FIG. 2, the applicable convex portions 6 are continuously art'anged in a stepwise configuration, such that a lower side constituting 04891 (4/10) a cross-section of each convex portion 6 is formed to extend outwardly and upwardly of the body part at an angle of 35 or less relative to a central axis X of the container.
[0019] When using a preform shown in FIG. 3 so as to perform biaxial-stretching blow molding of a slender bottle type container, such as that shown in FIGS. 1A, 1B and 2C, under a molding condition of a smaller circumferential draw ratio (typically, a circumferential draw ratio of 2.8 or less, and particularly 2.65 or less), it is general that a resin is rarely stretched at a lower region of the preform so that an upper region of the preform is brought to contact with a mold surface before the lower region contacts with the mold surface. This results in non-uniformity of the resin stretching between the upper region and lower region thereof, and tends to cause resin accumulation and whitening, which in turn cause a defective appearance.
Nonetheless, the invention has provided the convex portions 6 at the wall faces of the lower panels 5, respectively, with each convex portion 6 having a mountain-like cross-section having a width W larger at a lower side than at an upper side in a circumferential direction. This configuration rarely causes obstructions against vectors directed from the mouth part toward the bottom part in a stretching direction of the resin. Moreover, when the convex portions 6 are each provided to have ridge lines in the inverted V-shape, the resin is smoothly stretched upon blow molding to thereby mitigate or avoid resin accumulation and whitening.
[0020] Particularly, although resin accumulation is apt to be caused at an upper portion of each lower panel 5 upon blow molding, the panel border line at the sidewall 5a at the upper side has an arcuate border line bulged toward the container bottom part. This causes the resin to be more smoothly stretched to thereby more assuredly restrict occurrence of resin accumulation.
[0021] It is preferable for each convex portion 6 to have between its ridge lines a central angle 6 of about 60 to 125 for bringing about smooth stretching of a resin.
[0022] In the above-described embodiment, the convex portions 6 have been shown as examples to include two aligned portions with a spacing therebetween.
Continuously arranging the convex portions 6 in a stepwise configuration as shown in FIG. 2 enables a resin to be more smoothly stretched.
[0023] Of coursethe cooperating convex portions 6 can be increased or decreased in number depending on draw ratios and are not limited two, and the convex portions can be provided not only at the lower panels 5 but also at the upper 04891(5/10) panels 4, respectively.
[0024] In another embodiment shown in FIG. 4 and FIG. 5, convex portions 6 are each conflgured to have a trapezoidal shape having a width larger at a Iower side than at an upper side in a circumferential direction. It is also possible for each convex poxtion 6 to have a sideways fallen trapezoidal shape in a longitudinal cross-section of a container, such that the trapezoid has a side parallel to a central axis X of the container, as a top side of the trapezoid (i.e., as a region most apart from the central axis X of the container). These may obta;in the same effects as the previously described embodiment.
[0025] In still another embodiment shown in FIG. 6 and FIG. 7, convex portions 6 are not provided along wall faces 5b of lower panels 5. However, sidewalls 5a positioned at upper sides of the lower panels 5 each comprise a partial sphere defined by an arcuate border line bulged toward a container bottom part. Namely, each sidewall 5a positioned at the upper side of the lower panel 5 has a width larger at an upper side than at a lower side as viewed in a circumferential direction of the co ntaiuer.
j0026] In case of biaxial-stretching blow molding of the slender bottle type contaiuaer, such as that shown in FIG. 6 and FIG. 7, under a molding coDdition of a smaller caxcumferential draw ratio, each sidewalI 5a bas au arcuate panel border line.
This sufficiently promotes stretching of a resin, thereby making it possible to effectively restrict occurxeiace of resin accumulation, even without provision of convex portiores 6 along the wall faces 5b of the Iower panels 5.
[0027] In any one of the above-described embodiments, each border Iine delimiting the sidewall 5a positioned at the upper side of the lower panel 5 may be in an appropriate shape other than the arcuate shape insofar as it is bulged toward a container bottom part, such as a trapezoidal shape, a V-shape and a U-shape, each having an upper side longer than a lower side.
[00281 According to the invention as described above, it is possible to stably mold an excellent slender bottle capable of avoiding the occurxence of a defective appearance of the botde without adversely affecting heat resistance thereof, by smoothly stretching a resin even at mold surface portions corresponding to concave and convex portions of a body part surface upon blow molding.
[0029] The invention is iaot limited to the above-described embodiments, and 04891 (6/t0) many vat7iations and modifications are possible within the scope of the invention.
U4s91(7/10)
Claims (7)
1. A synthetic resin heat-resistant bottle type container comprising:
a slender container body part having at least one pressure reduction absorbing panel, the slender container body part being blow-molded from a preform to have a circumferential draw ratio of 2.8 or less;
at least one convex portion on a flat wall face of the at least one pressure reduction absorbing panel, the convex portion having a width larger at a lower side than at an upper side as viewed in a circumferential direction of the container to reduce obstructions during axial stretching of the slender container body part during blow molding to reduce resin accumulation and whitening of the container body part; and a border line formed at a boundary between the flat wall face of the at least one pressure reduction absorbing panel and the slender container body part.
a slender container body part having at least one pressure reduction absorbing panel, the slender container body part being blow-molded from a preform to have a circumferential draw ratio of 2.8 or less;
at least one convex portion on a flat wall face of the at least one pressure reduction absorbing panel, the convex portion having a width larger at a lower side than at an upper side as viewed in a circumferential direction of the container to reduce obstructions during axial stretching of the slender container body part during blow molding to reduce resin accumulation and whitening of the container body part; and a border line formed at a boundary between the flat wall face of the at least one pressure reduction absorbing panel and the slender container body part.
2. The bottle type container of claim 1, wherein the at least one convex portion comprises at least two convex portions aligned in a stepwise configuration on said wall face of the pressure reduction absorbing panel.
3. The bottle type container of claim 1 or claim 2, wherein said at least one convex portion has ridge lines in an inverted V-shape downwardly widened from a container mouth part toward a bottom part.
4. The bottle type container of claim 3, wherein the ridge lines have a central angle of 60° to 125° therebetween.
5. The bottle type container of claim 1 or claim 2, wherein the at least one convex portion is in a trapezoidal shape having an upper side and a lower side parallel to each other, the lower side being longer than the upper side.
6. The bottle type container of claim 5, wherein the trapezoid shape includes opposed sides that are non-parallel to each other and cooperatively define an angle of 60° to 125° therebetween.
7. The bottle type container of any one of claims 1 to 6, wherein at least one pressure reduction absorbing panel has a border line bulged toward a container bottom part.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003-395564 | 2003-11-26 | ||
| JP2003395564 | 2003-11-26 | ||
| JP2004-339150 | 2004-11-24 | ||
| PCT/JP2004/017419 WO2005051778A1 (en) | 2003-11-26 | 2004-11-24 | Synthetic resin heat-resistant bottle type container |
| JP2004339150A JP4864316B2 (en) | 2003-11-26 | 2004-11-24 | Heat-resistant bottle type container made of synthetic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2547279A1 CA2547279A1 (en) | 2005-06-09 |
| CA2547279C true CA2547279C (en) | 2009-11-17 |
Family
ID=34635604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002547279A Active CA2547279C (en) | 2003-11-26 | 2004-11-24 | Synthetic resin heat-resistant bottle type container |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7552834B2 (en) |
| EP (1) | EP1688354B1 (en) |
| JP (1) | JP4864316B2 (en) |
| KR (1) | KR100810676B1 (en) |
| CN (1) | CN100586804C (en) |
| AU (1) | AU2004293289B2 (en) |
| CA (1) | CA2547279C (en) |
| WO (1) | WO2005051778A1 (en) |
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|---|---|---|---|---|
| US7543713B2 (en) | 2001-04-19 | 2009-06-09 | Graham Packaging Company L.P. | Multi-functional base for a plastic, wide-mouth, blow-molded container |
| CA2707701C (en) | 2003-07-30 | 2011-02-01 | Graham Packaging Company L.P. | Container handling system |
| US8017065B2 (en) | 2006-04-07 | 2011-09-13 | Graham Packaging Company L.P. | System and method for forming a container having a grip region |
| US9707711B2 (en) | 2006-04-07 | 2017-07-18 | Graham Packaging Company, L.P. | Container having outwardly blown, invertible deep-set grips |
| US8747727B2 (en) | 2006-04-07 | 2014-06-10 | Graham Packaging Company L.P. | Method of forming container |
| JP4817179B2 (en) * | 2006-05-26 | 2011-11-16 | 株式会社吉野工業所 | Synthetic plastic round bottle |
| MX2008015335A (en) | 2006-06-02 | 2016-08-19 | Plastipak Packaging Inc | Container having vacuum compensation elements. |
| WO2007143611A2 (en) * | 2006-06-02 | 2007-12-13 | Constar International Inc. | Container having vacuum compensation elements |
| JP4962942B2 (en) * | 2006-06-29 | 2012-06-27 | 株式会社吉野工業所 | Synthetic resin housing |
| US7861876B2 (en) * | 2006-09-22 | 2011-01-04 | Ball Corporation | Bottle with intruding margin vacuum responsive panels |
| US8905253B2 (en) * | 2007-04-16 | 2014-12-09 | Plastipak Packaging, Inc. | Container having vacuum compensation elements |
| JP4898572B2 (en) * | 2007-06-27 | 2012-03-14 | 株式会社吉野工業所 | Bottle |
| US8181805B2 (en) * | 2007-08-31 | 2012-05-22 | Amcor Limited | Hot fill container |
| US7832583B2 (en) * | 2007-10-16 | 2010-11-16 | Graham Packaging Company, L.P. | Hot-fillable container and method of making |
| US20090242505A1 (en) * | 2008-03-28 | 2009-10-01 | Constar International Inc. | Rectangular container having inset label panels and concave heel geometry |
| US8627944B2 (en) | 2008-07-23 | 2014-01-14 | Graham Packaging Company L.P. | System, apparatus, and method for conveying a plurality of containers |
| US7926243B2 (en) | 2009-01-06 | 2011-04-19 | Graham Packaging Company, L.P. | Method and system for handling containers |
| US20110073556A1 (en) * | 2009-09-30 | 2011-03-31 | Graham Packaging Company, L.P. | Infant formula retort container |
| JP5501184B2 (en) * | 2010-09-30 | 2014-05-21 | 株式会社吉野工業所 | Bottle |
| US8962114B2 (en) | 2010-10-30 | 2015-02-24 | Graham Packaging Company, L.P. | Compression molded preform for forming invertible base hot-fill container, and systems and methods thereof |
| US8505757B2 (en) * | 2011-02-16 | 2013-08-13 | Amcor Limited | Shoulder rib to direct top load force |
| US9994378B2 (en) | 2011-08-15 | 2018-06-12 | Graham Packaging Company, L.P. | Plastic containers, base configurations for plastic containers, and systems, methods, and base molds thereof |
| US9150320B2 (en) | 2011-08-15 | 2015-10-06 | Graham Packaging Company, L.P. | Plastic containers having base configurations with up-stand walls having a plurality of rings, and systems, methods, and base molds thereof |
| CN102294817B (en) * | 2011-09-02 | 2013-10-02 | 俞安烊 | Process for manufacturing plastic container |
| US8919587B2 (en) | 2011-10-03 | 2014-12-30 | Graham Packaging Company, L.P. | Plastic container with angular vacuum panel and method of same |
| JP6236770B2 (en) * | 2012-11-14 | 2017-11-29 | 大日本印刷株式会社 | Plastic container |
| JP6388467B2 (en) * | 2012-12-03 | 2018-09-12 | サントリーホールディングス株式会社 | Resin container |
| US9022776B2 (en) | 2013-03-15 | 2015-05-05 | Graham Packaging Company, L.P. | Deep grip mechanism within blow mold hanger and related methods and bottles |
| US9254937B2 (en) | 2013-03-15 | 2016-02-09 | Graham Packaging Company, L.P. | Deep grip mechanism for blow mold and related methods and bottles |
| USD817173S1 (en) * | 2014-12-25 | 2018-05-08 | Dai Nippon Printing Co., Ltd. | Preform for bottles |
| US11155379B2 (en) * | 2018-12-21 | 2021-10-26 | Colgate-Palmolive Company | Container apparatus |
| EP4215338A1 (en) * | 2020-09-17 | 2023-07-26 | Guangzhou Tech-Long Packaging Machinery Co., Ltd | Bottle blowing mold, bottle blowing machine and plastic bottle |
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| FR1449600A (en) * | 1964-09-14 | 1966-05-06 | Fr Des Laboratoires Labaz Soc | Improvements to flexible material bottles, especially for medicinal products |
| JPH0350588Y2 (en) * | 1986-03-13 | 1991-10-29 | ||
| EP0506065B1 (en) * | 1987-02-17 | 1995-01-25 | Yoshino Kogyosho Co., Ltd. | Pressure resistant bottle-shaped container |
| JPH0644806Y2 (en) * | 1989-07-10 | 1994-11-16 | 株式会社吉野工業所 | Bottle made of synthetic resin |
| US4963471A (en) * | 1989-07-14 | 1990-10-16 | E. I. Du Pont De Nemours And Company | Holographic photopolymer compositions and elements for refractive index imaging |
| JPH076065Y2 (en) * | 1989-09-26 | 1995-02-15 | 本田技研工業株式会社 | Knuckle for vehicle suspension |
| JPH043910A (en) | 1990-04-20 | 1992-01-08 | Fujitsu Ltd | Manufacture of soi substrate |
| JPH043910U (en) * | 1990-04-23 | 1992-01-14 | ||
| US5178289A (en) * | 1992-02-26 | 1993-01-12 | Continental Pet Technologies, Inc. | Panel design for a hot-fillable container |
| US5341946A (en) * | 1993-03-26 | 1994-08-30 | Hoover Universal, Inc. | Hot fill plastic container having reinforced pressure absorption panels |
| JP3544706B2 (en) * | 1994-06-09 | 2004-07-21 | 日精エー・エス・ビー機械株式会社 | Biaxial stretch blow molded container |
| JPH10249922A (en) * | 1997-03-13 | 1998-09-22 | Toppan Printing Co Ltd | Container with antibacterial property and its manufacture |
| JPH11180428A (en) * | 1997-12-22 | 1999-07-06 | Hokkai Can Co Ltd | Synthetic resin container |
| JP3050588U (en) * | 1998-01-16 | 1998-07-21 | 日精エー・エス・ビー機械株式会社 | Biaxial stretch blow molded container |
| US6349838B1 (en) * | 1998-12-25 | 2002-02-26 | Toyo Seikan Kaisha, Ltd. | Plastic bottle and method of producing the same |
| JP3942803B2 (en) * | 2000-05-17 | 2007-07-11 | 株式会社吉野工業所 | Bottle vacuum absorption panel |
| WO2002049926A1 (en) * | 2000-12-20 | 2002-06-27 | Yoshino Kogyosho Co., Ltd. | Container made of synthetic resin |
| JP3946453B2 (en) | 2001-02-28 | 2007-07-18 | 株式会社吉野工業所 | Heat resistant bottle |
| US20040195199A1 (en) * | 2003-04-04 | 2004-10-07 | Kirk Maki | Hot fill container |
-
2004
- 2004-11-24 CN CN200480034673A patent/CN100586804C/en not_active Expired - Fee Related
- 2004-11-24 JP JP2004339150A patent/JP4864316B2/en active Active
- 2004-11-24 EP EP04819374A patent/EP1688354B1/en not_active Expired - Fee Related
- 2004-11-24 AU AU2004293289A patent/AU2004293289B2/en not_active Ceased
- 2004-11-24 WO PCT/JP2004/017419 patent/WO2005051778A1/en active Application Filing
- 2004-11-24 KR KR1020067009075A patent/KR100810676B1/en active IP Right Grant
- 2004-11-24 US US10/580,608 patent/US7552834B2/en active Active
- 2004-11-24 CA CA002547279A patent/CA2547279C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN1886300A (en) | 2006-12-27 |
| JP4864316B2 (en) | 2012-02-01 |
| US7552834B2 (en) | 2009-06-30 |
| EP1688354A4 (en) | 2008-08-13 |
| CA2547279A1 (en) | 2005-06-09 |
| AU2004293289A1 (en) | 2005-06-09 |
| EP1688354A1 (en) | 2006-08-09 |
| US20070075031A1 (en) | 2007-04-05 |
| CN100586804C (en) | 2010-02-03 |
| KR20060085951A (en) | 2006-07-28 |
| AU2004293289B2 (en) | 2009-06-11 |
| JP2005178904A (en) | 2005-07-07 |
| WO2005051778A1 (en) | 2005-06-09 |
| KR100810676B1 (en) | 2008-03-07 |
| EP1688354B1 (en) | 2012-11-07 |
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