GB2040256A - Synthetic resin thin-walled bottle - Google Patents
Synthetic resin thin-walled bottle Download PDFInfo
- Publication number
- GB2040256A GB2040256A GB7943201A GB7943201A GB2040256A GB 2040256 A GB2040256 A GB 2040256A GB 7943201 A GB7943201 A GB 7943201A GB 7943201 A GB7943201 A GB 7943201A GB 2040256 A GB2040256 A GB 2040256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bottle
- ground
- synthetic resin
- kick
- contacting
- 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.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 18
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 18
- 235000014171 carbonated beverage Nutrition 0.000 abstract description 2
- 230000003019 stabilising effect Effects 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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
- B65D1/0223—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by shape
- B65D1/0261—Bottom construction
- B65D1/0284—Bottom construction having a discontinuous contact surface, e.g. discrete feet
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Bottles for containing carbonated drinks are made from synthetic resin and provided with thin walls. Due to the pressure inside such a bottle, the bottle is usually provided with a spherical end, thus requiring the addition of a stabilising portion to allow the bottle to stand upright. The present invention provides a synthetic resin thin-walled bottle wherein the bottom 4 of the bottle 1 is raised up inwardly of the bottle 1 in a concavity, having an annular basal portion 13. A plurality of elongate outward bulges 14 are formed in a section 3a of the sidewall 3, adjacent the bottom 4. The underside 15 of each bulge 14 serves as an outer supporting surface, providing for a stable bottle. Annular portion 13 may be adapted to move outwardly under pressure to provide a flat annular strip level with the underside portions 15. <IMAGE>
Description
SPECIFICATION
Synthetic resin thin-walled bottle
This invention relates to a synthetic resin or plastics thin-wailed bottle, more particularly to such bottle which is stabilized in its upright standing position.
Heretofore, glass bottles have been popularly used as container bottles of carbonated drinks, refrigerants and the like. However, such glass bottles, because of their weight, involved the problems of high transportation cost and inconvenience in handling thereof.
In order to alleviate such problems, there has been devised a light-weight thin-walled bottle which is blow-molded from a synthetic resin intermediate material. The body portion of such bottle is formed cylindrical while the bottom is bulged out spherically downwards. Thus, the blow-molded bottle is biaxially oriented and can maintain the excellent properties and durability of the synthetic resin, so that such bottle, although thin-walled, had no problem in strength.
However, since the bottom of the bottle is bulged out spherically downwards, such bottle can not stay in its upright position unless a separately provided assisting leg element is used. Use of such extra leg element results in the increased manufacturing cost and unseemly external appearance of the bottle.
Attempts have been made to form an integral protuberant leg element at the periphery of the bottle but, in this case, the underside of the leg portion might become unduly thin-walled and liable to break, and thus no sufficient strength is provided at the bottom portion of the bottle.
In order to overcome such problems, it has been tried to raise up the bottle bottom inwardly to form a conical inward rise or kick while forming undulations at the peripheral portion of the bottom or the ground-contacting portion of the bottle. In this case, although the bottle bottom portion is sufficiently strengthened owing to the rib-like function of the undulant peripheral portion, there still is involved a difficult problem.It is required for withstanding the internal pressure in the bottle to lessen the diameter of the basal portion of the conical rise, which basal portion defines the inner diameter of the groundcontacting portion of the bottle, but if such basal portion is reduced in diameter, the stability of the bottle in its standing position is impaired and the bottle becomes prone to fall down particularly when the bottle is empty because the centroid thereof is positioned high. In other words, in case said type of inward kick is formed at the bottle bottom, the annular protuberant portion defined by the basal portion of said kick becomes the ground-contacting portion of the bottle, so that if the diameter of such portion is small, the bottle becomes unstable when it is in its standing position.Therefore, when such
bottles are carried on a conveyor for filling them with a liquid, it is found difficult to keep them standing
stably on the conveyor throughout the bottling
operation.
An object of this invention is to provide a largediameter annular ground-contacting portion at the bottom of a synthetic resin bottle to allow stable standing of the bottle. Another object of this invention is to provide a said type of bottle which is so constructed that when the bottle is empty, the outer peripheral portion alone of the bottle bottom is brought into contact with the ground so as to be able to stand stably, and when the bottle is full all the area of the bottom portion is brought into contact with the ground so that it can stand upright stably. Still another object of this invention is to provide a bottle of the type cited with a large-diameter annular ground-contacting portion at the bottom and also provide inside thereof with a small-diameter conical rise with a stepped portion therebetween to provide a greater endurance against internal pressure of the bottle.
Accordingly the present invention provides a synthetic resin thin-walled bottle having a neck portion, a wall portion and a bottom, in which at least the wall portion is biaxially oriented, characterized in that the bottom is raised up inwardly of the bottle to form a generally conical kick having a basal portion and a plurality of outward bulges are provided at a lower part of the wall of the bottle adjacent the bottom said bulges being such that the undersides thereof are positioned more outwardly of the bottle than the bottom so as to form a plurality outer ground contacting surfaces on which the bottle is supported when stood upright.
According to the present invention there is further provided a synthetic resin thin walled bottle wherein an inner ground-contacting surface radially inwardly of the outer ground-contacting surfaces, said inner ground-contacting surface being contiguous to the extension of the basal portion of the generally conical kick.
Particular embodiments of the present invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a sectional view, with parts broken away, of a synthetic resin thin-walled bottle in an embodiment of this invention;
Figure 2 is a bottom view of the same bottle of
Figure 1;
Figure 3 is a sectional view, with parts broken away, of a synthetic resin thin-walled bottle in another embodiment of this invention;
Figure 4 is a bottom view of the bottle of Figure 3; Figure is a sectional view, with parts broken away, of a synthetic resin thin-walled bottle in still another embodiment of this invention;
Figure 6 is an enlarged view of a portion of Figure 5.
Described first is a first embodiment of this invention with reference to Figures 1 and 2. The synthetic resin thin-walled bottle 1 of this invention is made by first forming a parison from a synthetic resin by injection molding and then biaxially orienting said parison by blowing molding. As for the synthetic resin material used in this invention, a saturated polyester resin is found best suited, but other resins such as polypropylene and polyvinyl chloride are also usable. The neck portion 2 of the bottle 1 does not undergo biaxial orientation, that is, it remains as that of the parison. The body portion 3 and the bottom 4 are biaxially oriented to have a large diameter.
The bottom 4 is raised up inwardly to form a conical kick 4a, and the peripheral portion thereof forms an annular inner ground-contacting surface 5.
Also, a slant 3a is formed between the lower part of the body portion 3 and said ground-contacting surface 5 at the lower end thereof. In the entire area of said slant 3a are formed a plurality of equidistantly spaced-apart outward bulges 6 which are each in the form of a longitudinally elongate hollow, with the underside of each said bulge 6 being formed flat to serve as an outer ground-contacting surface 7.
Said outer ground-contacting surfaces 7 are arranged continuous to and radially around the inner ground-contacting surface 5, and they are located on a same plane to allow stable upright standing of the bottle 1.
The conical kick 4a is small in diameter at its lowermost portion so that it can well withstand internal pressure in the bottle. Since the basal portion of said conical kick 4a is small in diameter, the inner ground-contacting surface 5 formed around said basal portion is also small in diameter, but as there are provided therearound a pluraity of outward bulges 6 which form the outer groundcontacting surfaces 7, a large-diameter groundcontacting area is provided at the bottom of the bottle. Therefore, the standing position of this bottle is far more stabilized than a bottle which has no such outer ground-contacting surfaces.
Said plurality of outward bulges 6 at the lower part of the bottle body portion and the conical kick 4a at the bottle bottom produce a rib-like function to provide the bottle with high strength. Also, the bottle properties are improved by the effect of biaxial orientation. If the bottle is moulded from a saturated polyester resin, there takes place no seepage of harmful matter such as solvent in use, and also no noxious gas is produced when the discarded bottle is burned.
Referring now to Figures 3 and 4, there is shown a second embodiment of this invention. In this embodiment, the lower part of the bottle body portion 3 is curved inwardly downwards to form a curved section 8, and a plurality of longitudinally elongate outward bulges 9 are formed in said curved section 8, with the outer peripheral part of each said bulge 9, being projected slightly downwardly to form a ground-contacting surface 10. The bottom portion continuous to the lower end of said curved section 8 is inwardly raised up to form a conical kick 11, with the basal end 12 thereof merging into the groundcontacting portion 10 positioned downwardly - thereof.
Thus, the bottle of this second embodiment is formed with a conical kick 11 with a small diameter, so that the bottle bottom portion is provided with high endurance against internal pressure in the bottle and also said conical kick portion 11 is enhanced in rigidity. Although the kick 11 is thus small in diameter, the portion at which the bottle bottom contacts the ground when in its standing position is limited to the area 10 at the outer periphery alone of the bottle bottom, so that the
standing position of the bottle when empty is stabilized.When the bottle is empty, the center of gravity thereof is positioned higher than that of the full bottle, so that if the inner peripheral area of the bottle bottom is designed to serve as groundcontacting surface, the bottle tends to fall down when even a small protruberance exists on the place where the bottle is to be rested in its standing position, but such tendency is minimized by allowing contact of only the outer peripheral portion of the bottle bottom with the place.
Although there are provided five bulges 9 at the lower part of the bottle body portion in the embodiment shown in Figure 4, such bulges may be provided in any suitable number. It is also possible to form a reinforcing rib or ribs for each such bulge 9.
Reference is now made to Figures 5 and 6 which illustrate a third embodiment of this invention. This embodiment is designed to provide the bottle with even higher stability in its upright standing position when the bottle is empty. The bottom 4 of the thin-walled bottle 1 is raised up inwardly of the bottle and the basal end thereof is formed into an annular flat strip 13. Also, a plurality of longitudinally elongate outward bulges 14 are formed in the slant section 3a at the lower part of the bottle body portion 3, with the underside of each said bulge 14 serves as an outer ground-contacting surface 15.
The outer ground-contacting surface 15 is positioned slightly downwardly of said annular flat strip 13 with a stepped portion therebetween. Said annu lar flat strip 13 is positioned at a higher level than the outer ground-contacting surface 15 and is not brought into contact with the ground when the bottle is empty, but once the bottle is filled with a liquid, said strip 13 is pressed down by the liquid weight against its elasticity to the same position as that of the outer ground-contacting surface 15 and is thereby brought into contact with the ground.
Thus, in this embodiment, since the conical kick 4a is formed with a small diameter, a higher strength is provided against internal pressure than the bottle with a kick of a larger diameter, and also said kick 4a is enhanced in rigidity because of sufficient orientation. Further, although the conical kick 4a is small in diameter, the outer ground-contacting surface at which the bottom of the bottle when empty is brought into contact with the bottle resting place is positioned even more outwardly than in the preceding embodiments because of provision of the annu lar flat strip 13, so that the upright standing position of the empty bottle is even more stabilized.
When the bottle is filled with a liquid, the annular flat strip 13 is brought into contact with the bottle resting place by the liquid weight to form an annular inner ground-contacting surface, so that even when the bottle is placed upright on a shelf consisting of a plurality of spaced-apart crosspieces such as used in a refrigerator there is no possibility that the plurality of outward bulges 14 should get caught between the crosspieces, thus assuring convenience of use of the bottle.
Claims (7)
1. A synthetic resin thin-walled bottle having a neck portion, a wall portion and a bottom, in which at least the wall portion is biaxially oriented, characterized in that the bottom is raised up inwardly of the bottle to form a generally conical kick having a basal portion and a plurality of outward bulges are provided at a lower part of the wall of the bottle adjacent the bottom, said bulges being such that undersides thereof are positioned more outwardly of the bottle than the bottom so as to form a plurality of outer ground-contacting surfaces on which the bottle is supported when stood upright.
2. A bottle according to claim 1, wherein there is provided an inner ground-contacting surface radially inwardly of the outer ground-contacting surfaces, said inner ground-contacting surface being contiguous to the basal portion of the generally conical kick.
3. A bottle according to claim 1, wherein the outer ground-contacting surfaces project from a region of the bottle bottom contiguous to the conical kick.
4. A bottle according to claim 3, wherein a part of the bottle wall portion adjacent the bottom is curved inwardly of the bottle to form a curved section and a plurality of outward longitudinally elongated bulges are provided in said curved section.
5. A bottle according to claim 1, wherein an inner ground-contacting surface is formed between the basal portion of the conical kick and the outer ground-contacting surface, said inner groundcontacting surface being positioned inwardly of the bottle compared to the outer ground-contacting surfaces and provided with elasticity so that in use when the bottle is empty said inner groundcontacting surface is at said inward position but when the bottle is full said inner ground-contacting portion is pressed outwardly to form a supporting surface together with the outer ground-contacting surfaces.
6. A synthetic resin thin-walled bottle substantially as hereinbefore described with reference to Figures 1 and 2, or 3 and 4, or 5 and 6 of the accompanying drawings.
7. The features hereinbefore disclosed or their equivalents in any novel combination.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979002805U JPS5821374Y2 (en) | 1979-01-10 | 1979-01-10 | Biaxially stretched synthetic resin thin wall bottle |
| JP1979002804U JPS5821373Y2 (en) | 1979-01-10 | 1979-01-10 | Biaxially stretched synthetic resin thin wall bottle |
| JP1979008580U JPS55110415U (en) | 1979-01-26 | 1979-01-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2040256A true GB2040256A (en) | 1980-08-28 |
| GB2040256B GB2040256B (en) | 1983-06-15 |
Family
ID=27275528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7943201A Expired GB2040256B (en) | 1979-01-10 | 1979-12-14 | Synthetic resin thin-walled bottle |
Country Status (8)
| Country | Link |
|---|---|
| AU (1) | AU522123B2 (en) |
| CA (1) | CA1135203A (en) |
| CH (1) | CH642021A5 (en) |
| DE (1) | DE2950242A1 (en) |
| FR (1) | FR2446228A1 (en) |
| GB (1) | GB2040256B (en) |
| IT (1) | IT1127779B (en) |
| NL (1) | NL7909032A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055595A1 (en) * | 1980-12-26 | 1982-07-07 | Yoshino Kogyosho CO., LTD. | Container of polyethylene terephthalate or saturated polyester resin |
| US4465199A (en) * | 1981-06-22 | 1984-08-14 | Katashi Aoki | Pressure resisting plastic bottle |
| GB2164914A (en) * | 1984-10-02 | 1986-04-03 | Bell Products Limited | A petrol can |
| FR2615387A1 (en) * | 1987-05-18 | 1988-11-25 | Otsuka Pharma Co Ltd | SELF-STABLE PARENTERAL BOTTLE IN SYNTHETIC RESIN |
| GB2295811A (en) * | 1994-12-09 | 1996-06-12 | Gadsden Pty Limited J | Flexible circular base for a plastic container |
| WO2006060352A1 (en) * | 2004-12-01 | 2006-06-08 | Graham Packaging Company, L.P. | Pressure resistant base |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0215881A1 (en) * | 1985-03-21 | 1987-04-01 | Merimate Limited | Improvements in or relating to plastics containers |
| FR2717443B1 (en) * | 1994-03-16 | 1996-04-19 | Evian Eaux Min | Plastic molded bottle. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1436388U (en) * | ||||
| US3598270A (en) * | 1969-04-14 | 1971-08-10 | Continental Can Co | Bottom end structure for plastic containers |
| ZA711341B (en) * | 1970-03-10 | 1971-11-24 | Pepsico Inc | Plastic container for carbonated beverage |
| US3727783A (en) * | 1971-06-15 | 1973-04-17 | Du Pont | Noneverting bottom for thermoplastic bottles |
| DE7240027U (en) * | 1971-11-01 | 1973-01-25 | E I Du Pont De Nemours And Co | Thermoplastic bottle with a bottom that does not bulge outwards |
| AT338164B (en) * | 1973-01-04 | 1977-07-25 | Bebo Plastik Gmbh | MUGS, IN PARTICULAR ICE CUP |
| US3870181A (en) * | 1973-02-12 | 1975-03-11 | Monsanto Co | Molecularly oriented bottle |
-
1979
- 1979-12-10 AU AU53633/79A patent/AU522123B2/en not_active Expired
- 1979-12-13 DE DE19792950242 patent/DE2950242A1/en not_active Withdrawn
- 1979-12-14 NL NL7909032A patent/NL7909032A/en active Search and Examination
- 1979-12-14 GB GB7943201A patent/GB2040256B/en not_active Expired
- 1979-12-19 CH CH1124579A patent/CH642021A5/en not_active IP Right Cessation
- 1979-12-28 IT IT7928460A patent/IT1127779B/en active
-
1980
- 1980-01-07 CA CA000343123A patent/CA1135203A/en not_active Expired
- 1980-01-09 FR FR8000395A patent/FR2446228A1/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0055595A1 (en) * | 1980-12-26 | 1982-07-07 | Yoshino Kogyosho CO., LTD. | Container of polyethylene terephthalate or saturated polyester resin |
| US4465199A (en) * | 1981-06-22 | 1984-08-14 | Katashi Aoki | Pressure resisting plastic bottle |
| GB2164914A (en) * | 1984-10-02 | 1986-04-03 | Bell Products Limited | A petrol can |
| FR2615387A1 (en) * | 1987-05-18 | 1988-11-25 | Otsuka Pharma Co Ltd | SELF-STABLE PARENTERAL BOTTLE IN SYNTHETIC RESIN |
| GB2295811A (en) * | 1994-12-09 | 1996-06-12 | Gadsden Pty Limited J | Flexible circular base for a plastic container |
| WO2006060352A1 (en) * | 2004-12-01 | 2006-06-08 | Graham Packaging Company, L.P. | Pressure resistant base |
| US7464825B2 (en) | 2004-12-01 | 2008-12-16 | Graham Packaging Company, L.P. | Pressure resistant base |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2446228A1 (en) | 1980-08-08 |
| GB2040256B (en) | 1983-06-15 |
| FR2446228B1 (en) | 1984-12-28 |
| IT1127779B (en) | 1986-05-21 |
| AU5363379A (en) | 1980-08-07 |
| DE2950242A1 (en) | 1980-07-17 |
| NL7909032A (en) | 1980-07-14 |
| IT7928460A0 (en) | 1979-12-28 |
| AU522123B2 (en) | 1982-05-20 |
| CA1135203A (en) | 1982-11-09 |
| CH642021A5 (en) | 1984-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 19991213 |