WO1991004912A1 - Biaxially stretched blow molded bottle - Google Patents
Biaxially stretched blow molded bottle Download PDFInfo
- Publication number
- WO1991004912A1 WO1991004912A1 PCT/JP1989/000988 JP8900988W WO9104912A1 WO 1991004912 A1 WO1991004912 A1 WO 1991004912A1 JP 8900988 W JP8900988 W JP 8900988W WO 9104912 A1 WO9104912 A1 WO 9104912A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ridge
- panel wall
- bottle
- deformation
- flat surface
- 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.)
- Ceased
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—Rigid or semi-rigid 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 or 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—Rigid or semi-rigid 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 or 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
- 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
- B65D2501/0018—Ribs
- B65D2501/0027—Hollow longitudinal ribs
-
- 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
- B65D2501/0018—Ribs
- B65D2501/0036—Hollow circonferential ribs
-
- 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
Definitions
- the present invention relates to a biaxially stretched molded body made of a synthetic resin, and more particularly, to a biaxially stretched blow molded body of a polyethylene terephthalate resin. Concerning the structure of
- Fractures obtained by biaxially stretch-blowing a primary molded article formed of a synthetic resin, for example, a polyethylene terephthalate resin, are widely used.
- the body has excellent properties of the contents by sufficiently stretching the primary molded article.
- the body is thin and lightweight. Further, the body has excellent impact resistance and can be mass-produced at low cost.
- a panel wall is provided on the body, and this reduced pressure is absorbed by the elastic deformation of the panel wall.
- This panel wall needs to be a relatively large flat wall structure for the following reasons. (1) Due to the decompression, the panel wall is more likely to deform than the other torso walls. (2) The collapse deformation that occurs on the panel wall is elastic deformation. (3) Slight depression Depending on the shape, reduce the volume of the bottle as much as possible. In the case of a large biaxially stretched molded body having a cylindrical body, reduced pressure can be absorbed in the body only by forming a vertically long flat part on the outer peripheral surface of the body. Panel wall cannot be formed. Therefore, the shape of the panel wall is elongated vertically and is not easily deformed. Therefore, the volume of the body did not change significantly due to the collapse of the body panel wall.
- a reduced pressure absorbing panel wall can be formed by forming flat parts on each surface of the body. It can.
- Each flat part is easily deformable and has a large plane area, so that the volume of the crushed body changes greatly due to the deformation of the flat part.
- This flat portion effectively functions as a panel wall for absorbing reduced pressure.
- FIG. 3 shows a prior art body 1, having a body 2 ′ in the shape of a rectangular tube.
- One surface of the body 2, and a surface adjacent to the surface are connected to each other by a ridge line.
- Each surface of the body is provided with a reduced pressure absorbing panel wall 3 'for absorbing deformation of the body wall caused by reduced pressure in the bottle.
- the ridge line is a pillar that maintains the shape of the trunk, and must have excellent mechanical strength.
- the form in which the panel wall 3 ′ is curved and deformed is not constant, and the rectangular cylindrical body is distorted.
- the wall thickness of the bottle is thin due to the large amount of stretching, the deformation due to decompression is large, and the height is large. Therefore, the ridgeline of a large bottle is required to have great mechanical strength.
- the elongated groove 5 ′ functions as a reinforcing rib, increases the mechanical strength of the ridge portion, and thus increases the deformation of the panel wall 3 ′. To prevent the ridgeline from being deformed illegally.
- a biaxially stretched blow-molded bottle formed in one factory is packed in a cardboard container or the like and transported to another factory for filling with a liquid.
- the body is light but bulky. Therefore, for efficient transport, it is desirable to pack many bottles tightly in one box.
- the present invention has been made in order to solve the problems and disadvantages of the above-described conventional technology. According to the present invention, when pressure is applied to the body of the crushed body from the outside, the ridgeline portion does not bend inward and semi-permanent buckling deformation does not occur, and mechanical strength is maintained.
- the main purpose is to provide the body.
- a panel wall (3) that includes a rectangular cylindrical body (2) and that absorbs reduced pressure generated inside the body is provided on a flat wall portion on each surface of the body.
- the corner of the body may be cut to form a vertically elongated flat surface, and a plurality of grooved grooves may be depressed and arranged at regular intervals on the flat surface.
- Negative pressure generated in the body due to cooling after the content liquid has been filled with heat is sufficiently absorbed by the elastic depressed deformation of each panel wall (3) of the body.
- the internal stress acting on the ridge causes the ridge to be drawn inward.
- the force pressing the ridge from both sides can be curved inward in response to the force to draw the ridge inward, especially at the ridge where the lateral groove (5, 5) is depressed. You.
- the force that pushes the ridge line from both sides acts on the ridge line together with the force that pulls the ridge line inward.
- the ridge has a tendency to protrude radially outward due to the force pressing the ridge from both sides. Therefore, the ridge portion has a tendency to protrude outward in the radial direction, functions as a reinforced rib, and opposes the above-described force of drawing inward, and the ridge portion has a large size. Exhibits high mechanical strength.
- a pressing force is applied to the body (2) of the body (1) packed in a container such as a cardboard from the side, and when the pressing force exceeds a certain value, the ridgeline is formed.
- the ridge portion is elastically curved and deformed inward gently throughout the entirety by the plurality of lateral grooves depressed across the portion.
- the elastic deformation of the ridge over the entire ridge absorbs the externally applied pressing force.
- the ridge since the ridge is elastically deformed, the ridge resiliently returns to its original shape when the external pressing force stops being applied. Therefore, the ridge does not deform semi-permanently.
- the torso can be cut off to make the ridge of the torso (2) flat. Corners (7) are formed on both left and right sides of the ridge, and corners 7 a are also formed on both sides of the lateral groove 5.
- the corners (7, 7a>) located on the left and right sides of the ridge are It has a function as a reinforcing rib against elastic bending deformation at the center of the ridge. Therefore, both sides of the ridge have a stress that tends to protrude radially outward due to the force pressing the ridge from both sides caused by the deformation of the panel wall. Therefore, the mechanical support function of the ridgeline when the panel wall is deformed can be further enhanced.
- the ridge Since the central part of the ridge is flat, the ridge can be elastically deformed by a pressing force applied from the outside. Therefore, if a strong pressing force acts on the body of the body that is not filled with the inner solution, the entire ridge will be cut off by elastic deformation more greatly, as described above. This does not cause the semi-permanent buckling deformation as described above, which can further enhance the ability to absorb the external force due to the elastic deformation of the entire ridge portion, and furthermore, the bottle Maintain sufficient mechanical strength to maintain body shape.
- FIG. 1 is a front view of an embodiment of a biaxially stretched blow molded article according to the present invention
- FIG. 2 is an enlarged cross-sectional view of a main part of the body shown in FIG. 1,
- FIG. 3 is a front view of a conventional biaxially stretch blow molded article.
- the body 1 is a thin large-sized body formed by biaxially stretching a primary molded product made of a synthetic resin.
- the crushed body 1 is manufactured from polyethylene terephthalate resin.
- the body 2 of the bottle 1 has a substantially rectangular tube shape.
- a panel wall 3 for absorbing reduced-pressure deformation in the container is formed on each surface at approximately two-thirds of the lower portion of the body 2.
- a deformed depression 3a may be provided to absorb decompression inside the body. Due to the deformed depressed portion 3a, the entire panel wall 3 is deformed under reduced pressure without causing improper distortion.
- two deformed depressions 3 a are formed in the vertical direction of each side surface. However, one vertically deformed depression may be provided in each panel wall 3.
- Corners 7 are formed at the left and right ends of the flat surface 4.
- a large number of lateral grooves 5 are depressed in parallel at regular intervals on the flat surface 4. Between the lateral grooves 5, there is a horizontal stripe.
- the horizontal groove 6 is formed as the flat surface 4 remaining by providing the horizontal groove 5.
- the horizontal groove 5 is formed over the entire flat surface 4 in the field direction. Both are formed in the body circumferential direction beyond the left and right ends of the flat surface 4.
- a corner 7a is formed in the lateral groove 5.
- Each of the corners 7a corresponds to the corner 7.
- a lateral lip 5a is formed between both ends of the groove 5 and the corner 7a.
- the upper and lower ends act as horizontal lip 5b.
- the corners 7 and 7a form a series of longitudinal ribs, which oppose the internal stress acting on the ridge when the panel wall 3 absorbs the negative pressure generated in the bottle 1. I do.
- the horizontal ribs 5a and 5b, together with the horizontal stripe 6, absorb the pressure applied to the body 1 and elastically deform the flat surface 4.
- Each ridge line stably and firmly supports the panel wall that is elastically depressed and deformed to absorb decompression, and withstands the internal stress caused by the depressed deformation of the panel wall.
- Each panel wall of the raccoon is well elastically deformed. Therefore, it is possible to maintain a good external appearance shape during the decompression deformation in the bottle.
- the structure is simple because many lateral grooves are simply recessed at the ridge. Therefore, molding can be performed more easily by a conventional molding method without requiring special molding technology.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU43224/89A AU647375B2 (en) | 1989-09-29 | 1989-09-29 | Biaxially stretched blow molded bottle |
| KR1019900700450A KR0154098B1 (ko) | 1988-04-01 | 1989-09-29 | 2축 연신 블로우 성형한 병 |
| EP89910920A EP0446352B1 (en) | 1988-04-01 | 1989-09-29 | Biaxially stretched blow molded bottle |
| DE68919710T DE68919710T2 (de) | 1989-09-29 | 1989-09-29 | Biaxial gereckte, blasgeformte flasche. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988044275U JPH084407Y2 (ja) | 1988-04-01 | 1988-04-01 | 2軸延伸ブロー成形壜体 |
| CA000614762A CA1334009C (en) | 1988-04-01 | 1989-09-29 | Biaxially blow-molded bottle-shaped container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991004912A1 true WO1991004912A1 (en) | 1991-04-18 |
Family
ID=25673170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1989/000988 Ceased WO1991004912A1 (en) | 1988-04-01 | 1989-09-29 | Biaxially stretched blow molded bottle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5199588A (ja) |
| EP (1) | EP0446352B1 (ja) |
| KR (1) | KR0154098B1 (ja) |
| CA (1) | CA1334009C (ja) |
| WO (1) | WO1991004912A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226550A (en) * | 1992-06-23 | 1993-07-13 | Silgan Plastics Corporation | Synthetic resin bottle with handgrips |
Families Citing this family (148)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61117109U (ja) * | 1984-09-06 | 1986-07-24 | ||
| JPS6282922U (ja) * | 1985-11-14 | 1987-05-27 |
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| FR1351140A (fr) * | 1963-03-14 | 1964-01-31 | Procédé de fabrication de récipients souples en matière plastique, tels que bouteilles, ainsi que les moules nécessaires à l'obtention de ces récipients et les produits conformes à ceux obtenus par l'application du précédent procédé ou procédé similaire | |
| FR1397037A (fr) * | 1964-05-26 | 1965-04-23 | Unipol S A Soc | Capacité constituant un conditionnement pour produits fluides |
| DE2635494A1 (de) * | 1976-08-06 | 1978-03-02 | Ristic Zoran | Verschliessbare kunststoffflasche fuer getraenke |
| USD275267S (en) | 1981-03-16 | 1984-08-28 | Societe Generale Des Eaux Minerales De Vittel | Bottle |
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- 1989-09-29 KR KR1019900700450A patent/KR0154098B1/ko not_active Expired - Fee Related
- 1989-09-29 EP EP89910920A patent/EP0446352B1/en not_active Expired - Lifetime
- 1989-09-29 WO PCT/JP1989/000988 patent/WO1991004912A1/ja not_active Ceased
- 1989-09-29 US US07/465,227 patent/US5199588A/en not_active Expired - Lifetime
- 1989-09-29 CA CA000614762A patent/CA1334009C/en not_active Expired - Fee Related
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| JPS61117109U (ja) * | 1984-09-06 | 1986-07-24 | ||
| JPS6282922U (ja) * | 1985-11-14 | 1987-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226550A (en) * | 1992-06-23 | 1993-07-13 | Silgan Plastics Corporation | Synthetic resin bottle with handgrips |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0446352B1 (en) | 1994-11-30 |
| KR0154098B1 (ko) | 1999-02-18 |
| EP0446352A1 (en) | 1991-09-18 |
| KR920700145A (ko) | 1992-02-19 |
| US5199588A (en) | 1993-04-06 |
| EP0446352A4 (en) | 1991-12-18 |
| CA1334009C (en) | 1995-01-17 |
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