CA1128438A - Thin synthetic resin bottle - Google Patents
Thin synthetic resin bottleInfo
- Publication number
- CA1128438A CA1128438A CA344,335A CA344335A CA1128438A CA 1128438 A CA1128438 A CA 1128438A CA 344335 A CA344335 A CA 344335A CA 1128438 A CA1128438 A CA 1128438A
- Authority
- CA
- Canada
- Prior art keywords
- bottle
- recess
- synthetic resin
- depth
- grooves
- 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
- B65D1/0276—Bottom construction having a continuous contact surface, e.g. Champagne-type bottom
-
- 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
A thin synthetic resin bottle including a bottom wall having its center portion formed into a frusto-conical recess while leaving there-around an annular support surface. A plurality of grooves are formed in the annular surface so that vertical, radial walls of the grooves increase the strength of the bottom wall of the bottle.
A thin synthetic resin bottle including a bottom wall having its center portion formed into a frusto-conical recess while leaving there-around an annular support surface. A plurality of grooves are formed in the annular surface so that vertical, radial walls of the grooves increase the strength of the bottom wall of the bottle.
Description
~2~3~38 BACKGROUND OF Tl-IE INVENTION
.
Field of the Invention The present invention relates to a biaxially oriented thin synthetic resin bottle which is suited to be charged with beverages such as carbonated or cooling beverages, and more particularly to a thin bottle of the above type having its bottom strengthened.
Description of the Prior Art Glass bottles have been mostly used as the conventional bottles to be charged with carbonated beverages or the like. ~lowever, the glass bottles have sufficiently large weights as to increase the cost of transportation and to make them inconvenient in handling.
In order to eliminate the aforementioned drawback, there have been trials, in which a synthetic resin bottle made thin by biaxial orientation is made to have its side wall formed into à cylindrical shape and its bottom wall protruding downwardly into an hemispherical shape. This is because the bottle can have its strength or other physical properties improved by biaxial orientation even if it is made thin. Since, however, the bottle has its bot-tom wall protruding downwardly into an hemispherical shape, it cannot be stood stably unless it is fitted at its bottom in a separate flared stand. The resultant drawbacks are that the cost is increased and that the appearance is deteriorated. If, moreover, the bottle is not correctly fitted in the stand so that it is inclined, the bottle neck is out of place so that the charging operation is impaired.
In order to s-tably stand the bottle, there have also been made other trials, in which a plurality of legs are formed to bulge from the circumfer-ential edge of the bottom wall of the bottle. In these cases, however, the legs have their lower ends so thinned that they are liable to be broken and thereby to fail to provide sufficient st ength at the bottom of the bottle.
' ~' ~' _JMMARY OF rllr INVFN~ [ON
According to the present invention, there is provided a thin syn-thetic resin bottle having at least its wall other than a neck portion thereoE biaxailly oriented, comprising: a side wall having a lower portion curved inwardly to have the most reduced diameter at the lower end thereof and a downwardly converging tapered portion at the bottom thereof; a bottom wall having its center portion protruding inwardly of said bottle to form a frusto-conical recess while leaving an annular support surface between the rim of said recess and the lower end of said side wall, the annular support surface sloping upwardly from its outer circumference to its inner circumference; and a plurality of radial grooves formed in said bottom wall spaced substantially equidistantly around said recess and having generally vertical walls so as to increase the strength of said bottom wall.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate exemplary embodiments of the present invention:
Figure 1 is a partially cut-away sectional view showing a thin bottle according to a first embodiment of the present invention;
Figure 2 is a bottom view showing the thin bottle of Figure l;
Figure 3 is similar to Figure 1 but shows a thin bottle according to a second embodiment;
Figure 4 is similar to Figure 2 but shows the thin bottle of Pigure 3;
and Figure 5 is a sectional view showing a lower portion of a thin bottle according to a modification of the second embodiment, in which the groundable surface of the bottle bottom is limited to the outer circumference thereof.
DESCRIPTION OF THE PREFERRED EMBODIMENT
A thin bottle according to a first embodiment of the present inven-8~L38 tion will now be described with reference to Figures 1 and 2. l`he thin bottle of synthetic resin as indicated generally at numeral 1, is produced by - 2a -~i . ' ' : ' : ~ ' injection-molding a parison oE synthetic resin such that the parison is sub-jected to a blow molding process for the biaxial orientation. A saturated polyester resin is desired as the synthetic resin material for the bottle, but a synthetic resin such as polypropyrene or vinyl chloride may also be used.
The neck portion 2 of -the thin bottle 1 is the same as the neck portion of the parison, without any biaxial orientation. On the contrary, the side wall 3 and bottom wall 4 of the thin bottle 1 extending downwardly from the neck 2 are biaxially oriented to have enlarged diameters.
The side wall 3 has a circular transverse section and has its lower portion curved inwardly to have the most reduced diameter at the lower end thereof. On the other hand, the bottom wall 4 has its center portion pro-truding inwardly to form a frusto-conical recess 5 which is not so high as the total height of the bottle.
Between the lower end of the side wall 3 and the rim of the cir-cumferential wall 6 of the recess 5, there is formed an annular surface 7, on which the bottle may be stood in an upright position on a floor or the like.
The annular surface 7 is formed with a plurality of radial grooves 8 which are spaced equidistantly around the surface 7. Each of the grooves 8 is about one half the height of the recess 5. Each groove 8 ls formed with a pair of generally vertical walls 8b which meet at a horizontal uppermost base wall 8a.
Shock loadings on the base of the bottle, such as lmposed when the bottle is dropped, can be absorbed through the elasticity of the vertical walls 8b.
If desired, a plurality of radial ribs having a thickened section may be formed in the annular surface 7 of the bottle bottom so that the bottom can be further reinforced.
With the plural grooves 8 formed radially and equidistantly around the annular surface of the bot~le bottom, many generally vertical walls are formed by the respective grooves, so that the drop strength of the bottle can 3~
be enhanced. Since, moreover~ the generally vertical walls can be elastical-ly bent to have shock absorbing properties, the bottle can be stood without any damage upon a floor or the like. Still further, since the base walls 8a are at one half of the depth of the frusto-conical recess 5, the effective capacity of the bottle is not especially reduced. Since it is sufficient that not only the depth of the grooves 8 but also the depth of the recess 5 is restricted within a small range, the thickness of the bottle bottom can be prevented from becoming excessively small so that the drop strength of the bottle can be enhanced.
Additionally, since the side wall of the bottle is partly formed into a cylindrical shape and partly curved inwardly in its lower portion, the bottle can resist internal pressure even if it is used as a container for storing beverages under high pressures. Since the bottle bottom has its cen-ter portion protruding inwardly of the bottle to have the frusto-conical recess, the bottle is supported only at the annular surface 7 of the outer circumference so that it can stand stably either empty or filled with a liquid.
If the internal pressure of the bottle is raised, the bottom of the frusto-conical recess 5 is lowered against the elasticity of the flared sidewall thereof thereby to increase the capacity of the bottle so that the internal pressure in the bottle is accordingly reduced, thereby to increase the pressure-resisting strength of the bottle as a whole. In this instance, the standing position of the bottle can remain stable because there is no effect on the supporting surface even if the recess 5 is expanded or deformed.
Another or second embodiment of the present invention will now be described with reference to Figures 3 and 4. This second embodiment is similar to the foregoing first embodiment in that the side wall 3 of the bottle has its lower portion curved inwardly and that the bottom wall 4 is formed with the frusto-conical recess 5 which protrudes inwardly. The annular ~2~g~3B
surface 7 acting as the support surface is also Eormed between the rim of the circumferential wall 6 of the recess 5 and the lower end portion of the side wall 3. In the second emhodiment, it should be noted that the radial width of the annular surface 7 is made larger than that of the first embodiment.
It should also be noted that the plural grooves 8 are formed in the annular surface 7 in a manner to extend radially from the center of the bottom wall 4 but that the raised walls 8a forming the horizontal bottoms of the grooves 8 are posltioned substantially at the same level as the bottom of the recess 5. In this way, the second embodiment is different from the first one in that the height or level of the raised walls are increased. In other words, the depth of the grooves 8 is made larger than that of the first embodiment.
With the second embodiment, because the grooves 8 are made deeper than those of the first embodiment, their vertical walls have larger width.
The internal pressure of the bottle to be born on the Erusto-conical portion 5 can be distributed on and absorbed by the vertical walls 8b. As a result, it is possible to prevent only the recess 5 from being locally deformed to decrease the strength of the bottle and the support surface of the bottle bottom from being deformed to make the standing position of the bottle in-stable.
Since, moreover, the widths of the vertical walls 8b and the annular surface 7are made larger than those of the first embodiment, the drop strength of the bottle can be further improved.
Now, with reference to Figure 5, description will be given of a modi-fication of the second embodiment, in which the contour of the lower portion of the bottle is slightly changed. According to this modification, the side wall 3 of the bottle has its lower portion reduced at its lower end to have a converging taper portion 3a while leaving the remaining portion curved inward-ly in a manner similar to that of the second embodiment. Likewise, the 28~3~3 bottom ~all 4 has its center port;on formed into the Erusto-conical recess 5, and the plural grooves ~ are formed radlally in the annular surface 7 around the recess 5. It should be noted here that the outer circumference of the annular surface 7 is slightly lower than the imler circumference so that only the former engages a supporting surface to provide a radially expanded support surface.
According to the modification, therefore, the bottle is supported only at the outer circumference of its bottom so that its standing position can be further stabilized. This stabilization can be further improved by the radial expansion of the annular surface. This is because the bottle side wall has its lower portion extending into the converging taper portion from the curved portion.
.
Field of the Invention The present invention relates to a biaxially oriented thin synthetic resin bottle which is suited to be charged with beverages such as carbonated or cooling beverages, and more particularly to a thin bottle of the above type having its bottom strengthened.
Description of the Prior Art Glass bottles have been mostly used as the conventional bottles to be charged with carbonated beverages or the like. ~lowever, the glass bottles have sufficiently large weights as to increase the cost of transportation and to make them inconvenient in handling.
In order to eliminate the aforementioned drawback, there have been trials, in which a synthetic resin bottle made thin by biaxial orientation is made to have its side wall formed into à cylindrical shape and its bottom wall protruding downwardly into an hemispherical shape. This is because the bottle can have its strength or other physical properties improved by biaxial orientation even if it is made thin. Since, however, the bottle has its bot-tom wall protruding downwardly into an hemispherical shape, it cannot be stood stably unless it is fitted at its bottom in a separate flared stand. The resultant drawbacks are that the cost is increased and that the appearance is deteriorated. If, moreover, the bottle is not correctly fitted in the stand so that it is inclined, the bottle neck is out of place so that the charging operation is impaired.
In order to s-tably stand the bottle, there have also been made other trials, in which a plurality of legs are formed to bulge from the circumfer-ential edge of the bottom wall of the bottle. In these cases, however, the legs have their lower ends so thinned that they are liable to be broken and thereby to fail to provide sufficient st ength at the bottom of the bottle.
' ~' ~' _JMMARY OF rllr INVFN~ [ON
According to the present invention, there is provided a thin syn-thetic resin bottle having at least its wall other than a neck portion thereoE biaxailly oriented, comprising: a side wall having a lower portion curved inwardly to have the most reduced diameter at the lower end thereof and a downwardly converging tapered portion at the bottom thereof; a bottom wall having its center portion protruding inwardly of said bottle to form a frusto-conical recess while leaving an annular support surface between the rim of said recess and the lower end of said side wall, the annular support surface sloping upwardly from its outer circumference to its inner circumference; and a plurality of radial grooves formed in said bottom wall spaced substantially equidistantly around said recess and having generally vertical walls so as to increase the strength of said bottom wall.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate exemplary embodiments of the present invention:
Figure 1 is a partially cut-away sectional view showing a thin bottle according to a first embodiment of the present invention;
Figure 2 is a bottom view showing the thin bottle of Figure l;
Figure 3 is similar to Figure 1 but shows a thin bottle according to a second embodiment;
Figure 4 is similar to Figure 2 but shows the thin bottle of Pigure 3;
and Figure 5 is a sectional view showing a lower portion of a thin bottle according to a modification of the second embodiment, in which the groundable surface of the bottle bottom is limited to the outer circumference thereof.
DESCRIPTION OF THE PREFERRED EMBODIMENT
A thin bottle according to a first embodiment of the present inven-8~L38 tion will now be described with reference to Figures 1 and 2. l`he thin bottle of synthetic resin as indicated generally at numeral 1, is produced by - 2a -~i . ' ' : ' : ~ ' injection-molding a parison oE synthetic resin such that the parison is sub-jected to a blow molding process for the biaxial orientation. A saturated polyester resin is desired as the synthetic resin material for the bottle, but a synthetic resin such as polypropyrene or vinyl chloride may also be used.
The neck portion 2 of -the thin bottle 1 is the same as the neck portion of the parison, without any biaxial orientation. On the contrary, the side wall 3 and bottom wall 4 of the thin bottle 1 extending downwardly from the neck 2 are biaxially oriented to have enlarged diameters.
The side wall 3 has a circular transverse section and has its lower portion curved inwardly to have the most reduced diameter at the lower end thereof. On the other hand, the bottom wall 4 has its center portion pro-truding inwardly to form a frusto-conical recess 5 which is not so high as the total height of the bottle.
Between the lower end of the side wall 3 and the rim of the cir-cumferential wall 6 of the recess 5, there is formed an annular surface 7, on which the bottle may be stood in an upright position on a floor or the like.
The annular surface 7 is formed with a plurality of radial grooves 8 which are spaced equidistantly around the surface 7. Each of the grooves 8 is about one half the height of the recess 5. Each groove 8 ls formed with a pair of generally vertical walls 8b which meet at a horizontal uppermost base wall 8a.
Shock loadings on the base of the bottle, such as lmposed when the bottle is dropped, can be absorbed through the elasticity of the vertical walls 8b.
If desired, a plurality of radial ribs having a thickened section may be formed in the annular surface 7 of the bottle bottom so that the bottom can be further reinforced.
With the plural grooves 8 formed radially and equidistantly around the annular surface of the bot~le bottom, many generally vertical walls are formed by the respective grooves, so that the drop strength of the bottle can 3~
be enhanced. Since, moreover~ the generally vertical walls can be elastical-ly bent to have shock absorbing properties, the bottle can be stood without any damage upon a floor or the like. Still further, since the base walls 8a are at one half of the depth of the frusto-conical recess 5, the effective capacity of the bottle is not especially reduced. Since it is sufficient that not only the depth of the grooves 8 but also the depth of the recess 5 is restricted within a small range, the thickness of the bottle bottom can be prevented from becoming excessively small so that the drop strength of the bottle can be enhanced.
Additionally, since the side wall of the bottle is partly formed into a cylindrical shape and partly curved inwardly in its lower portion, the bottle can resist internal pressure even if it is used as a container for storing beverages under high pressures. Since the bottle bottom has its cen-ter portion protruding inwardly of the bottle to have the frusto-conical recess, the bottle is supported only at the annular surface 7 of the outer circumference so that it can stand stably either empty or filled with a liquid.
If the internal pressure of the bottle is raised, the bottom of the frusto-conical recess 5 is lowered against the elasticity of the flared sidewall thereof thereby to increase the capacity of the bottle so that the internal pressure in the bottle is accordingly reduced, thereby to increase the pressure-resisting strength of the bottle as a whole. In this instance, the standing position of the bottle can remain stable because there is no effect on the supporting surface even if the recess 5 is expanded or deformed.
Another or second embodiment of the present invention will now be described with reference to Figures 3 and 4. This second embodiment is similar to the foregoing first embodiment in that the side wall 3 of the bottle has its lower portion curved inwardly and that the bottom wall 4 is formed with the frusto-conical recess 5 which protrudes inwardly. The annular ~2~g~3B
surface 7 acting as the support surface is also Eormed between the rim of the circumferential wall 6 of the recess 5 and the lower end portion of the side wall 3. In the second emhodiment, it should be noted that the radial width of the annular surface 7 is made larger than that of the first embodiment.
It should also be noted that the plural grooves 8 are formed in the annular surface 7 in a manner to extend radially from the center of the bottom wall 4 but that the raised walls 8a forming the horizontal bottoms of the grooves 8 are posltioned substantially at the same level as the bottom of the recess 5. In this way, the second embodiment is different from the first one in that the height or level of the raised walls are increased. In other words, the depth of the grooves 8 is made larger than that of the first embodiment.
With the second embodiment, because the grooves 8 are made deeper than those of the first embodiment, their vertical walls have larger width.
The internal pressure of the bottle to be born on the Erusto-conical portion 5 can be distributed on and absorbed by the vertical walls 8b. As a result, it is possible to prevent only the recess 5 from being locally deformed to decrease the strength of the bottle and the support surface of the bottle bottom from being deformed to make the standing position of the bottle in-stable.
Since, moreover, the widths of the vertical walls 8b and the annular surface 7are made larger than those of the first embodiment, the drop strength of the bottle can be further improved.
Now, with reference to Figure 5, description will be given of a modi-fication of the second embodiment, in which the contour of the lower portion of the bottle is slightly changed. According to this modification, the side wall 3 of the bottle has its lower portion reduced at its lower end to have a converging taper portion 3a while leaving the remaining portion curved inward-ly in a manner similar to that of the second embodiment. Likewise, the 28~3~3 bottom ~all 4 has its center port;on formed into the Erusto-conical recess 5, and the plural grooves ~ are formed radlally in the annular surface 7 around the recess 5. It should be noted here that the outer circumference of the annular surface 7 is slightly lower than the imler circumference so that only the former engages a supporting surface to provide a radially expanded support surface.
According to the modification, therefore, the bottle is supported only at the outer circumference of its bottom so that its standing position can be further stabilized. This stabilization can be further improved by the radial expansion of the annular surface. This is because the bottle side wall has its lower portion extending into the converging taper portion from the curved portion.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A thin synthetic resin bottle having at least its wall other than a neck portion thereof biaxially oriented, comprising: a side wall having a lower portion curved inwardly to have the most reduced diameter at the lower end thereof and a downwardly converging tapered portion at the bottom thereof;
a bottom wall having its center portion protruding inwardly of said bottle to form a frusto-conical recess while leaving an annular support surface between the rim of said recess and the lower end of said side wall, the annular support surface sloping upwardly from its outer circumference to its inner circumference;
and a plurality of radial grooves formed in said bottom wall spaced substantially equidistantly around said recess and having generally vertical walls so as to increase the strength of said bottom wall.
a bottom wall having its center portion protruding inwardly of said bottle to form a frusto-conical recess while leaving an annular support surface between the rim of said recess and the lower end of said side wall, the annular support surface sloping upwardly from its outer circumference to its inner circumference;
and a plurality of radial grooves formed in said bottom wall spaced substantially equidistantly around said recess and having generally vertical walls so as to increase the strength of said bottom wall.
2. A thin synthetic resin bottle as set forth in claim 1, wherein said grooves have a depth substantially equal to the depth of said recess.
3. A thin synthetic resin bottle as set forth in claim 1, wherein said grooves have a depth that is substantially one half the depth of said recess.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54-8703 | 1979-01-25 | ||
| JP54-8704 | 1979-01-25 | ||
| JP870479U JPS55108015U (en) | 1979-01-25 | 1979-01-25 | |
| JP870379U JPS5910013Y2 (en) | 1979-01-25 | 1979-01-25 | Biaxially stretched synthetic resin thin wall bottle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1128438A true CA1128438A (en) | 1982-07-27 |
Family
ID=26343272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA344,335A Expired CA1128438A (en) | 1979-01-25 | 1980-01-24 | Thin synthetic resin bottle |
Country Status (7)
| Country | Link |
|---|---|
| AU (1) | AU523703B2 (en) |
| CA (1) | CA1128438A (en) |
| CH (1) | CH642599A5 (en) |
| DE (1) | DE3000785C2 (en) |
| FR (1) | FR2447321A1 (en) |
| IT (1) | IT1129768B (en) |
| NL (1) | NL189035C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4850493A (en) * | 1988-06-20 | 1989-07-25 | Hoover Universal, Inc. | Blow molded bottle with self-supporting base reinforced by hollow ribs |
| AU671946B3 (en) * | 1994-12-09 | 1996-09-12 | J Gadsden Proprietary Limited | Improved container base |
| AU684439B2 (en) * | 1994-12-09 | 1997-12-11 | J Gadsden Proprietary Limited | Improved container base |
| JP4080212B2 (en) | 2002-01-31 | 2008-04-23 | 株式会社吉野工業所 | Thin-walled bottle made of synthetic resin |
| DE102007034786A1 (en) | 2007-07-25 | 2009-01-29 | Khs Corpoplast Gmbh & Co. Kg | Process for making pouches and blown pouches |
| DE102007049750A1 (en) * | 2007-10-16 | 2009-04-23 | Krones Ag | Pouch bottle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH449446A (en) * | 1965-12-10 | 1967-12-31 | L M P Lavorazione Materie Plas | Blown bottle of flexible plastic material for liquids developing an internal pressure |
| US3727783A (en) * | 1971-06-15 | 1973-04-17 | Du Pont | Noneverting bottom for thermoplastic bottles |
| BE790814A (en) * | 1971-11-01 | 1973-04-30 | Du Pont | NON-TURNING BOTTOM FOR THERMOPLASTIC BOTTLE |
| US3871541A (en) * | 1973-02-26 | 1975-03-18 | Continental Can Co | Bottom structure for plastic containers |
| US3935955A (en) * | 1975-02-13 | 1976-02-03 | Continental Can Company, Inc. | Container bottom structure |
| US4108324A (en) * | 1977-05-23 | 1978-08-22 | The Continental Group, Inc. | Ribbed bottom structure for plastic container |
-
1980
- 1980-01-10 DE DE3000785A patent/DE3000785C2/en not_active Expired
- 1980-01-11 NL NLAANVRAGE8000178,A patent/NL189035C/en not_active IP Right Cessation
- 1980-01-14 CH CH26080A patent/CH642599A5/en not_active IP Right Cessation
- 1980-01-15 AU AU54603/80A patent/AU523703B2/en not_active Expired
- 1980-01-23 IT IT8019408A patent/IT1129768B/en active
- 1980-01-24 CA CA344,335A patent/CA1128438A/en not_active Expired
- 1980-01-24 FR FR8001508A patent/FR2447321A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AU5460380A (en) | 1980-08-07 |
| NL189035C (en) | 1992-12-16 |
| NL189035B (en) | 1992-07-16 |
| DE3000785C2 (en) | 1986-10-23 |
| NL8000178A (en) | 1980-07-29 |
| IT1129768B (en) | 1986-06-11 |
| FR2447321B1 (en) | 1984-12-28 |
| AU523703B2 (en) | 1982-08-12 |
| FR2447321A1 (en) | 1980-08-22 |
| DE3000785A1 (en) | 1980-07-31 |
| IT8019408A0 (en) | 1980-01-23 |
| CH642599A5 (en) | 1984-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |