CA1135203A - Synthetic resin made thin-walled bottle - Google Patents
Synthetic resin made thin-walled bottleInfo
- Publication number
- CA1135203A CA1135203A CA000343123A CA343123A CA1135203A CA 1135203 A CA1135203 A CA 1135203A CA 000343123 A CA000343123 A CA 000343123A CA 343123 A CA343123 A CA 343123A CA 1135203 A CA1135203 A CA 1135203A
- Authority
- CA
- Canada
- Prior art keywords
- bottle
- ground
- contacting
- synthetic resin
- bottom wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- 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
ABSTRACT OF THE DISCLOSURE
The synthetic resin thin-walled bottle of this invention is raised up at its bottom to form a small-diameter conical kick and also provided with a plurality of outwardly swelling bulges at the lower part of its body por-tion such that the underside of each said bulge constitutes a ground-contact-ing portion. Thus, although a small-diameter conical kick is formed at the-bottom, the standing position of the bottle is stabilized by provision of a large-diameter ground-contacting portion at the bottom.
The synthetic resin thin-walled bottle of this invention is raised up at its bottom to form a small-diameter conical kick and also provided with a plurality of outwardly swelling bulges at the lower part of its body por-tion such that the underside of each said bulge constitutes a ground-contact-ing portion. Thus, although a small-diameter conical kick is formed at the-bottom, the standing position of the bottle is stabilized by provision of a large-diameter ground-contacting portion at the bottom.
Description
This invention rel~*es to a thin-walled bottle fabricated from synthetic resin, more particularly to such bottle which is ætabilized in its upright standing position.
Heretofore, glass bottles have been popularly used as container bottles for carbonated drinks, refrigerants and the like. However~ such glass bottles, because of their weight, involved the problems of high trans-portation cost and inconvenience in handling.
In order to alleviate such problems, there has been developed a light-weight thin~~alled bottle which is blow-molded from a synthetic resin material. The body portion of such bottle is formed cylindrical while the bottom wall is bulged out spherically downwards. Thus, the blow-molded bot-tle is biaxially oriented and can maintain the excellent properties and dura-bility of the synthetic resin, so that such bottle, although thin-walled, had no problem in strength.
However, since the bottom wall o~ the bottle is bulged out spher-ically downwards, such a bottle can not stay in its upright position unless a separately pro~ided assis-ting leg element is used. Use of such an extra leg element results in both increased manufacturing costs and an unseemly external appearance for the bottle. Attempts have been made to form an integral pro-tuberant leg element at the periphery of the bot-tle but~ in this case, the underside of the leg portion might become unduly thin walled and liable to break, and thus insufficient strength is provided at the bottom portion of the bottle.
In order to o~ercome such problems, the possibilit~ of shaping the bottle bottom wall inwardly to form a conical inward rise or kick while form-ing undulations at the peripheral portion of the bottom wall, or the ground-contacting portion of the bottle. In this case, although the bottle bottom portion is su~iciently strengthened ~wing t~ the rib~lîke ~unction o~ the , j 1- ~;
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.
.. ' , ' : ~: :
. .~ - ' .
za3 undulant peripheral po.rtion, there st.ill is involved a difficult problem. I-t 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 defined the inner diameter of the ground-contacting portion of the bottle~ but if such basal portion is reduced in diameter, the stability of the bottle in its stand-ing 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, when this 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-con-tacting 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.
This invention seeks to provide a large-diameter annual ground-contacting portion at the bottom of a synthetic resin bottle to allow stable standing of the bottle. This invention also seeks .~ to provide a synethetic resin 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 hottom portion is brought into contact with the ground so that it can stand upright stably. This invention further seeks to provide a synthetic resin bottle with a large-diameter annular ground-contac~ing portion at the bottom and also provide inside there-
Heretofore, glass bottles have been popularly used as container bottles for carbonated drinks, refrigerants and the like. However~ such glass bottles, because of their weight, involved the problems of high trans-portation cost and inconvenience in handling.
In order to alleviate such problems, there has been developed a light-weight thin~~alled bottle which is blow-molded from a synthetic resin material. The body portion of such bottle is formed cylindrical while the bottom wall is bulged out spherically downwards. Thus, the blow-molded bot-tle is biaxially oriented and can maintain the excellent properties and dura-bility of the synthetic resin, so that such bottle, although thin-walled, had no problem in strength.
However, since the bottom wall o~ the bottle is bulged out spher-ically downwards, such a bottle can not stay in its upright position unless a separately pro~ided assis-ting leg element is used. Use of such an extra leg element results in both increased manufacturing costs and an unseemly external appearance for the bottle. Attempts have been made to form an integral pro-tuberant leg element at the periphery of the bot-tle but~ in this case, the underside of the leg portion might become unduly thin walled and liable to break, and thus insufficient strength is provided at the bottom portion of the bottle.
In order to o~ercome such problems, the possibilit~ of shaping the bottle bottom wall inwardly to form a conical inward rise or kick while form-ing undulations at the peripheral portion of the bottom wall, or the ground-contacting portion of the bottle. In this case, although the bottle bottom portion is su~iciently strengthened ~wing t~ the rib~lîke ~unction o~ the , j 1- ~;
: . ' !
.
.. ' , ' : ~: :
. .~ - ' .
za3 undulant peripheral po.rtion, there st.ill is involved a difficult problem. I-t 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 defined the inner diameter of the ground-contacting portion of the bottle~ but if such basal portion is reduced in diameter, the stability of the bottle in its stand-ing 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, when this 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-con-tacting 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.
This invention seeks to provide a large-diameter annual ground-contacting portion at the bottom of a synthetic resin bottle to allow stable standing of the bottle. This invention also seeks .~ to provide a synethetic resin 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 hottom portion is brought into contact with the ground so that it can stand upright stably. This invention further seeks to provide a synthetic resin bottle with a large-diameter annular ground-contac~ing portion at the bottom and also provide inside there-
- 2 -.
.
1135Z~P3 of with a small-diameter conical rise with stepped portion there-between to provide a greater endurance agains-t internal pressure of the bottle.
The invention comprises a synthetic resin thin-walled bottle having a neck portion, a biaxially oriented body wall por-tion extending downwardly from the neck portion and a bottom wall portion connected to the lower extremity of said body wall portion through a body wall section which extends downwardly and inwardly to said bottom wall portion, the bottom wall portion of said bottle having an upwardly projecting rise having a conical lower portion and an annuar basal portion connected to said section and said rise through a substantially planar annular interconnect area, said section having spaced on the circumferential periphery there-of a plurality of rounded bulges projecting outwardly from said section, each of said bulges having an underside surface positioned more outwardly than said annular interconnect area, the underside surface of said bu].ges being annularly arranged and forming an out-er ground-contacting surface for said bottle.
In the attached drawings:
Figure 1 is a sectional view, with part broken away, of a syn-- 2a -, . .
-~,' ' . ; ' . , :~' . ' ' ~ , ' . , ~1~35~
thetic resin thin-~alled bottle in an e~bodiment of this invention;
Figure 2 is a l)o~tom view of the bottle of figure 1;
Figure 3 is a sectional view, with parts broken away, of a synthet-ic resin thin-walled bottle in another embodiment of this invention, ~ igure 4 is a bottom view of the bottle of figure 39 Figure 5 is a sectional view, with parts broken awa~ of a synthet-ic resin thin-walled bottle in still another embodiment o~ this invention, and Figure 6 is an enlarged sectional view of the bottle of Figure 5.
Described first is a first embodiment of this invention with refer-ence 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 injec-tion molding and then biaxially orienting said parison by blow molding. As for the synthetic resin material used in this invention, a saturated poly-ester resin is ~ound 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 ~all 4 are biaxially oriented to have a large diameter.
The bottom wall 4 is raised up in~ardly to ~orm a conical kick 4a~
and the peripheral portion thereo~ forms an annular inner ground-contacting portion 5. Also, a slant 3a is formed between the lo~er part of the body portion 3 and said ground-contacting portion 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 elongated hollow, ~ith the underside of each said bulge 6 being formed flat to serve as an outer ground-contacting portion 7. The outer ground-contact-ing portions 7 are arranged continuous to and radially around the inner
.
1135Z~P3 of with a small-diameter conical rise with stepped portion there-between to provide a greater endurance agains-t internal pressure of the bottle.
The invention comprises a synthetic resin thin-walled bottle having a neck portion, a biaxially oriented body wall por-tion extending downwardly from the neck portion and a bottom wall portion connected to the lower extremity of said body wall portion through a body wall section which extends downwardly and inwardly to said bottom wall portion, the bottom wall portion of said bottle having an upwardly projecting rise having a conical lower portion and an annuar basal portion connected to said section and said rise through a substantially planar annular interconnect area, said section having spaced on the circumferential periphery there-of a plurality of rounded bulges projecting outwardly from said section, each of said bulges having an underside surface positioned more outwardly than said annular interconnect area, the underside surface of said bu].ges being annularly arranged and forming an out-er ground-contacting surface for said bottle.
In the attached drawings:
Figure 1 is a sectional view, with part broken away, of a syn-- 2a -, . .
-~,' ' . ; ' . , :~' . ' ' ~ , ' . , ~1~35~
thetic resin thin-~alled bottle in an e~bodiment of this invention;
Figure 2 is a l)o~tom view of the bottle of figure 1;
Figure 3 is a sectional view, with parts broken away, of a synthet-ic resin thin-walled bottle in another embodiment of this invention, ~ igure 4 is a bottom view of the bottle of figure 39 Figure 5 is a sectional view, with parts broken awa~ of a synthet-ic resin thin-walled bottle in still another embodiment o~ this invention, and Figure 6 is an enlarged sectional view of the bottle of Figure 5.
Described first is a first embodiment of this invention with refer-ence 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 injec-tion molding and then biaxially orienting said parison by blow molding. As for the synthetic resin material used in this invention, a saturated poly-ester resin is ~ound 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 ~all 4 are biaxially oriented to have a large diameter.
The bottom wall 4 is raised up in~ardly to ~orm a conical kick 4a~
and the peripheral portion thereo~ forms an annular inner ground-contacting portion 5. Also, a slant 3a is formed between the lo~er part of the body portion 3 and said ground-contacting portion 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 elongated hollow, ~ith the underside of each said bulge 6 being formed flat to serve as an outer ground-contacting portion 7. The outer ground-contact-ing portions 7 are arranged continuous to and radially around the inner
- 3 -~ .
~"'' . , '' :"
`
:
- ~ -~3~ 3 ground-contactine portion 5, and they are located on a same plane to allow stable upright standl.ng of the bottle 1.
The conical kick 4a is sma.ll in diameter at its lowermost portion so that it can well withstand in-ternal pressure in the bottle. Since the basal portion of said conical kick l~a is small in diameter, the inner ground-contacting portion 5 formed around said ba.sal portion is also small in diam-eter, but as there are provided therearound a plurality of outward bulges 6 which form the outer ground-contacting portions ~, a large-diameter ground-contacting area is provided at the bottom of the bottle. Therefore, the standing position of this bottle is far more stabiliæed than the bottIe which has no such outer ground-conta.cting portions.
Said plurality of outward bulges 6 at the lower part of the bo-ttle 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 prop-erties are improved by the effect of biaxial orientation. If the bottle is molded from a saturated polyester resin, there ta~es place no seepage of harmful matter such as solvent in use, and also no noxious gas is produced uhen the discarded bot-tle is burned.
Referring now to Figures 3 and 4, there is shown a second embodi-ment of this invention. In this embodiment, the lower part of the bottlebody portion 3 is curved inwardly downwards to form a curved section 8, and a plurality of longitudinally elongated outward bulges 9 are formed in said curved section 8, with the outer peripheral part of each said bulge 9, being projected sl.ightly downwardly to form a ground-contacting surface 10. The bottom portion continuous to the lower ena of said curved section 8 is in-wardly raised up to form a conical kick 11, with the basal end 12 thereof merging into the ground-contacting portion 10 positioned downwardly thereof.
Thus~ the bottle of this second embodiment is formed with a conical : .
~13S~C~3 kick 11 ~ith a small diameter, so that the bo-ttle bottom portion is provided with high endurance against internal pressure in the bottle and also said conical ~ick portion ]1 is enhanced in rigidity. Although the kick 11 is thus small in ~iameter, the portion at which the bottle botto~ contacts the ground when in its standing position is limited to the area 10 at the outer periphery alone of the bottle botto~l, so that the standing position of the bottle when empty is stabili~ed. Tdhen the bottle is empty, the center o~
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 ground-contacting surface, the bottle tends to fall down when even a small protuberance 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 sho~m in Figure 4, such bulges may be pro~ided in any suitable number. It is also possible to form a reinforcing rib or ribs ~or each such bulge 9.
Reference is now had 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. ~he bottom wall 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 elongated outward bulges 14 are formed in the slant section 3a at the lower part of the bottle body portion 3, with the underside o* each said bulge 14 serves as an outer ground-contacting suxface 15. The outer ground contacting surface 15 is positioned sligh-tly downwardly of said annular flat strip 13 with a s-tepped portion therebetween. Said annular ~lat strip 13 is positioned at a higher level _ .
~t~32~3 th~l the outer ground-contacting surface 15 and i5 not brought lnto contact with the ground when the bottle is empty, but orLce the bottle is filled with a liquid, said strip 13 is pressed down by the liquid weigm against its elas-ticity to the same position as that of the outer ground-contacting sur-face 15 and iB thereby brought into contact with the ground.
Thus, in this embodiment, since the conical kick l~a 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 sufficien-t 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 annular ~lat strip 13, so that the upright standing position of the empty bottle is even more stabilized.
When the bottle is ~illed 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 e~en 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 1~ should get caught between the crosspieces, thus assuring convenience of use of the bottle.
~"'' . , '' :"
`
:
- ~ -~3~ 3 ground-contactine portion 5, and they are located on a same plane to allow stable upright standl.ng of the bottle 1.
The conical kick 4a is sma.ll in diameter at its lowermost portion so that it can well withstand in-ternal pressure in the bottle. Since the basal portion of said conical kick l~a is small in diameter, the inner ground-contacting portion 5 formed around said ba.sal portion is also small in diam-eter, but as there are provided therearound a plurality of outward bulges 6 which form the outer ground-contacting portions ~, a large-diameter ground-contacting area is provided at the bottom of the bottle. Therefore, the standing position of this bottle is far more stabiliæed than the bottIe which has no such outer ground-conta.cting portions.
Said plurality of outward bulges 6 at the lower part of the bo-ttle 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 prop-erties are improved by the effect of biaxial orientation. If the bottle is molded from a saturated polyester resin, there ta~es place no seepage of harmful matter such as solvent in use, and also no noxious gas is produced uhen the discarded bot-tle is burned.
Referring now to Figures 3 and 4, there is shown a second embodi-ment of this invention. In this embodiment, the lower part of the bottlebody portion 3 is curved inwardly downwards to form a curved section 8, and a plurality of longitudinally elongated outward bulges 9 are formed in said curved section 8, with the outer peripheral part of each said bulge 9, being projected sl.ightly downwardly to form a ground-contacting surface 10. The bottom portion continuous to the lower ena of said curved section 8 is in-wardly raised up to form a conical kick 11, with the basal end 12 thereof merging into the ground-contacting portion 10 positioned downwardly thereof.
Thus~ the bottle of this second embodiment is formed with a conical : .
~13S~C~3 kick 11 ~ith a small diameter, so that the bo-ttle bottom portion is provided with high endurance against internal pressure in the bottle and also said conical ~ick portion ]1 is enhanced in rigidity. Although the kick 11 is thus small in ~iameter, the portion at which the bottle botto~ contacts the ground when in its standing position is limited to the area 10 at the outer periphery alone of the bottle botto~l, so that the standing position of the bottle when empty is stabili~ed. Tdhen the bottle is empty, the center o~
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 ground-contacting surface, the bottle tends to fall down when even a small protuberance 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 sho~m in Figure 4, such bulges may be pro~ided in any suitable number. It is also possible to form a reinforcing rib or ribs ~or each such bulge 9.
Reference is now had 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. ~he bottom wall 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 elongated outward bulges 14 are formed in the slant section 3a at the lower part of the bottle body portion 3, with the underside o* each said bulge 14 serves as an outer ground-contacting suxface 15. The outer ground contacting surface 15 is positioned sligh-tly downwardly of said annular flat strip 13 with a s-tepped portion therebetween. Said annular ~lat strip 13 is positioned at a higher level _ .
~t~32~3 th~l the outer ground-contacting surface 15 and i5 not brought lnto contact with the ground when the bottle is empty, but orLce the bottle is filled with a liquid, said strip 13 is pressed down by the liquid weigm against its elas-ticity to the same position as that of the outer ground-contacting sur-face 15 and iB thereby brought into contact with the ground.
Thus, in this embodiment, since the conical kick l~a 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 sufficien-t 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 annular ~lat strip 13, so that the upright standing position of the empty bottle is even more stabilized.
When the bottle is ~illed 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 e~en 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 1~ should get caught between the crosspieces, thus assuring convenience of use of the bottle.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A synthetic resin thin-walled bottle having a neck portion, a biaxially oriented body wall portion extending downwardly from the neck portion and a bottom wall portion connected to the lower extremity of said body wall portion through a body wall section which extends downwardly and inwardly to said bottom wall portion, the bottom wall portion of said bottle having an upwardly projecting rise having a conical lower portion and an annular basal portion connected to said section and said rise through a substantially planar annular interconnect area, said section having spaced on the circumferential periphery thereof a plurality of rounded bulges projecting outwardly from said section, each of said bulges having an underside surface positioned more out-wardly than said annular interconnect area, the underside surface of said bulges being annularly arranged and forming an outer ground-contacting surface for said bottle.
2. A synthetic resin thin-walled bottle according to Claim 1, wherein said interconnect area forms an inner ground-contacting surface on the inside of said outer ground-contacting surface.
3. A synthetic resin thin-walled bottle as in Claim 1, wherein said section slants downwardly and inwardly to said bottom wall portion.
4. A synthetic resin thin-walled bottle according to Claim 1, wherein the outer ground-contacting surface is projected downwardly from the inner periphery of the bottle bottom wall contiguous to the upwardly projecting rise
5. A synthetic resin thin-walled bottle according to Claim 1, wherein an inner ground-contacting portion is formed between the basal portion of the upwardly projecting rise and the outer ground-contacting portion, said inner ground contacting portion being positioned at a higher level than the outer ground-contact-ing portion and provided with elasticity so that when the bottle is empty, said inner ground-contacting portion stays at a higher level than the outer ground-contacting portion, but when the bottle is full, said inner ground-contacting portion is pressed down to the same position as that of the outer ground-contacting portion.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979002805U JPS5821374Y2 (en) | 1979-01-10 | 1979-01-10 | Biaxially stretched synthetic resin thin wall bottle |
| JP54-2805 | 1979-01-10 | ||
| JP54-2804 | 1979-01-10 | ||
| 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 | |
| JP54-8580 | 1979-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1135203A true CA1135203A (en) | 1982-11-09 |
Family
ID=27275528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000343123A Expired CA1135203A (en) | 1979-01-10 | 1980-01-07 | Synthetic resin made 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) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1186251A (en) * | 1980-12-26 | 1985-04-30 | Akiho Ota | Container of polyethylene terephthalate or saturated polyester resin |
| US4465199A (en) * | 1981-06-22 | 1984-08-14 | Katashi Aoki | Pressure resisting plastic bottle |
| GB2164914B (en) * | 1984-10-02 | 1988-06-22 | Bell Products Limited | A petrol can |
| AU5625486A (en) * | 1985-03-21 | 1986-10-13 | Merimate Ltd. | Improvements in or relating to plastics containers |
| AU606685B2 (en) * | 1987-05-18 | 1991-02-14 | Otsuka Pharmaceutical Factory, Inc. | Self-supportable parenteral bottle of synthetic resin |
| FR2717443B1 (en) * | 1994-03-16 | 1996-04-19 | Evian Eaux Min | Plastic molded bottle. |
| AU671946B3 (en) * | 1994-12-09 | 1996-09-12 | J Gadsden Proprietary Limited | Improved container base |
| US7464825B2 (en) | 2004-12-01 | 2008-12-16 | Graham Packaging Company, L.P. | Pressure resistant base |
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
Also Published As
| Publication number | Publication date |
|---|---|
| AU5363379A (en) | 1980-08-07 |
| IT1127779B (en) | 1986-05-21 |
| CH642021A5 (en) | 1984-03-30 |
| NL7909032A (en) | 1980-07-14 |
| IT7928460A0 (en) | 1979-12-28 |
| GB2040256A (en) | 1980-08-28 |
| AU522123B2 (en) | 1982-05-20 |
| GB2040256B (en) | 1983-06-15 |
| FR2446228B1 (en) | 1984-12-28 |
| DE2950242A1 (en) | 1980-07-17 |
| FR2446228A1 (en) | 1980-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |