WO2004098862A2 - Systeme et procede de soufflage de corps creux en matiere plastique minimisant la consommation d'air haute pression - Google Patents
Systeme et procede de soufflage de corps creux en matiere plastique minimisant la consommation d'air haute pression Download PDFInfo
- Publication number
- WO2004098862A2 WO2004098862A2 PCT/FR2004/001117 FR2004001117W WO2004098862A2 WO 2004098862 A2 WO2004098862 A2 WO 2004098862A2 FR 2004001117 W FR2004001117 W FR 2004001117W WO 2004098862 A2 WO2004098862 A2 WO 2004098862A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blowing
- liquid
- high pressure
- volume
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/44—Component parts, details or accessories; Auxiliary operations for applying pressure through the walls of an inflated bag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/783—Measuring, controlling or regulating blowing pressure
- B29C2049/7831—Measuring, controlling or regulating blowing pressure characterised by pressure values or ranges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2949/00—Indexing scheme relating to blow-moulding
- B29C2949/07—Preforms or parisons characterised by their configuration
- B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06—Injection blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
Definitions
- the present invention relates to a system and a method for blowing plastic hollow bodies minimizing the consumption of high pressure air.
- preforms injection molded, of containers and in particular bottles of thermoplastic material such as polyethylene terephthalate (P. ET.), The opening of which
- the neck is much smaller than the body, thus preventing the introduction of blowing volume reduction cores.
- thermoplastic polymers have experienced rapid development over the past years.
- stretch-blow-molding techniques for blanks or "preforms" being carried out in a temperature zone where the material is stretchable under high internal pressure currently make it possible to obtain bottles having a minimum weight at the same time as a high level of mechanical properties.
- Preform 1 in one piece, consists of a stretchable part or hollow cylindrical body 2, closed at one end by a semi-spherical cap, the other end, open, forming the neck 3 of the finished bottle and comprising a circular coaxial collar 4 projecting from the outside diameter of the preform. Unlike body 2, the neck 3 does not undergo any transformation during the bottle manufacturing process ( Figure 1).
- the preform is placed in a blowing mold in which is defined a cavity in the shape of the container to be obtained, so that its open end protrudes outside the mold.
- a blowing device can be brought to the level of the neck of the preform to inject pressurized air into the preform.
- a drawing rod is introduced axially inside the preform to abut against the closed end of the body of the preform.
- the P. ET. develops in the form of a bubble which ends up occupying almost the final volume of the bottle to be blown.
- the final high-pressure blowing phase only serves to bring the material into complete contact with the mold cavity to ensure good impression of the mold form and contact between the wall of the bottle and the mold generally cooled.
- the entire volume of the pre-blown bottle is therefore filled with high pressure air.
- the opening of the neck has a much smaller diameter than that of the body and, as such, it is impossible to introduce drawing cores of significant size, these having to be able go through the neck, which does not limit the volume of high pressure air inside the container.
- the objective sought of the present invention is to limit as much as possible the consumption of high pressure air by reducing the internal volume of the bottle thanks to the introduction, after the pre-blowing operation, of a body that cannot be compressed at inside of it. This body behaving like a core will considerably reduce the volume, thus minimizing the volume of high pressure air necessary for a good impression.
- the difficulty is to be able to introduce this “dead” volume of large volume through a very small orifice which is the neck of the bottle.
- the system according to the invention consists in sheathing the drawing rod, provided with an internal channel connected to a liquid inlet pipe, with an elastomer pocket into which the liquid is introduced thanks to the mechanical action of '' a piston after the stretching and pre-blowing phase, so as to make it take the volume of the pre-blown body before carrying out the high pressure blowing, a non-return valve disposed on the liquid supply making it incompressible the pocket filled with liquid.
- FIG. 1 shows a bottle preform before blowing
- FIG. 2 shows a preform in place in the blowing mold, before processing
- FIGS. 3 and 4 respectively represent, under the same conditions, the stretching and pre-blowing phases
- FIG. 5 shows the elastomer bag filled with liquid
- FIGS. 6 and 7 illustrate two variants of high pressure blowing
- FIG. 8 shows the finished bottle extracted from the mold.
- FIGS. 2 to 7 consists of a common type blowing mold 5 provided with an internal cavity 6 having the shape of the container 20 to be obtained and an opening allowing the introduction of the body 2 of the preform 1, such so that the neck 3 protrudes outside the mold.
- the neck 3 of the preform is capped with an end piece 7 with a sealed connection provided with a bypass 8 through which the pre-blowing air is introduced (arrow F2, FIG. 4).
- a drawing rod 9, inserted inside the preform 1, can slide axially so as to press on the closed end of the body 2 of the preform to push this end towards the bottom of the cavity 6
- the drawing rod is sheathed by an elastomer pocket 10, the upper part of which is hooked to a ring 11 sliding on the rod which has an internal channel 12 connected to a pipe 13 for the arrival of liquid and provided with communicating orifices. with the inside of the pocket.
- the pre-blowing air is evacuated by venting (arrow F4, Figure 5) .
- a liquid 14 is introduced into the pocket through the drawing rod 9 (arrow F3).
- the pocket thanks to the ring 11, therefore slides along the stretching rod to take up the volume of the body 2 pre-blown with the preform, which makes it possible to limit the extension of the pocket and therefore to increase its lifespan.
- the liquid 14 can be admitted thanks to the mechanical action of a low pressure piston bearing on a cam driven by the system mechanism.
- a non-return valve 15 piloted traps the volume of liquid in the pocket 10. This assembly therefore becomes an incompressible body.
- the final transformation high-pressure phase can be carried out according to two alternative embodiments
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0305553A FR2854592A1 (fr) | 2003-05-07 | 2003-05-07 | Systeme et procede de soufflage de corps creux en matiere plastique minimisant la consommation d'air haute pression |
FR03/05553 | 2003-05-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004098862A2 true WO2004098862A2 (fr) | 2004-11-18 |
WO2004098862A3 WO2004098862A3 (fr) | 2005-02-17 |
Family
ID=33306209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/001117 WO2004098862A2 (fr) | 2003-05-07 | 2004-05-07 | Systeme et procede de soufflage de corps creux en matiere plastique minimisant la consommation d'air haute pression |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2854592A1 (fr) |
WO (1) | WO2004098862A2 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1588835A2 (fr) * | 2004-04-21 | 2005-10-26 | Luigi Fioretti | Dispositif pour la fabrication et la formation d'un récipient à partir d'un film |
DE102008030866A1 (de) | 2008-06-30 | 2009-12-31 | Krones Ag | Blasvorrichtung, insbesondere für Behältnisse |
CN101941288A (zh) * | 2009-07-03 | 2011-01-12 | 克朗斯股份公司 | 用于生产空心体的吹塑机和方法 |
DE102012105999A1 (de) * | 2012-07-05 | 2014-01-09 | Krones Ag | Blasmaschine und verfahren zum herstellen eines hohlkörpers aus einem vorformling mit einer blasmaschine |
WO2014113853A1 (fr) * | 2013-01-23 | 2014-07-31 | Alves Hélio Vieira | Bidon en plastique et procédé de fabrication de ce bidon, garniture, bouchon de transport, bouchon d'aération, bouchon robinet et support de base à utiliser avec ledit bidon |
DE102014016140A1 (de) * | 2014-10-30 | 2016-05-04 | Khs Corpoplast Gmbh | Verfahren zur Entfernung von Luft aus Vorformlingen zur Herstellung von gefüllten Behältern aus Kunststoff |
WO2018221028A1 (fr) * | 2017-05-30 | 2018-12-06 | 株式会社吉野工業所 | Méthode de fabrication de récipient de liquide |
WO2024003552A1 (fr) * | 2022-06-30 | 2024-01-04 | Pulpex Limited | Procédé, ainsi que système de moule |
GB2622789A (en) * | 2022-09-27 | 2024-04-03 | Pulpex Ltd | System for and method of forming receptacle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3055241B1 (fr) * | 2016-08-25 | 2019-04-26 | Airless Pet | Procede de fabrication, recipient et machine d’injection associes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2768106A (en) * | 1950-09-19 | 1956-10-23 | Jack D Sartakoff | Method of making a carboy |
US3837776A (en) * | 1973-07-06 | 1974-09-24 | Farrell Patent Co | Product cooling for blow molding |
US3868206A (en) * | 1971-11-17 | 1975-02-25 | Continental Can Co | Apparatus for manufacture of highly oriented polymeric containers |
US3944645A (en) * | 1972-04-24 | 1976-03-16 | Farrell Patent Company | Method for balloon blown plastic molding |
-
2003
- 2003-05-07 FR FR0305553A patent/FR2854592A1/fr active Pending
-
2004
- 2004-05-07 WO PCT/FR2004/001117 patent/WO2004098862A2/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2768106A (en) * | 1950-09-19 | 1956-10-23 | Jack D Sartakoff | Method of making a carboy |
US3868206A (en) * | 1971-11-17 | 1975-02-25 | Continental Can Co | Apparatus for manufacture of highly oriented polymeric containers |
US3944645A (en) * | 1972-04-24 | 1976-03-16 | Farrell Patent Company | Method for balloon blown plastic molding |
US3837776A (en) * | 1973-07-06 | 1974-09-24 | Farrell Patent Co | Product cooling for blow molding |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1588835A3 (fr) * | 2004-04-21 | 2007-07-11 | Luigi Fioretti | Dispositif pour la fabrication et la formation d'un récipient à partir d'un film |
EP1588835A2 (fr) * | 2004-04-21 | 2005-10-26 | Luigi Fioretti | Dispositif pour la fabrication et la formation d'un récipient à partir d'un film |
DE102008030866B4 (de) * | 2008-06-30 | 2017-05-18 | Krones Aktiengesellschaft | Blasvorrichtung, insbesondere für Behältnisse |
DE102008030866A1 (de) | 2008-06-30 | 2009-12-31 | Krones Ag | Blasvorrichtung, insbesondere für Behältnisse |
CN101941288A (zh) * | 2009-07-03 | 2011-01-12 | 克朗斯股份公司 | 用于生产空心体的吹塑机和方法 |
US8747724B2 (en) | 2009-07-03 | 2014-06-10 | Krones Ag | Blow molding machine and method for producing hollow bodies |
CN101941288B (zh) * | 2009-07-03 | 2014-07-09 | 克朗斯股份公司 | 用于生产空心体的吹塑机和方法 |
DE102012105999A1 (de) * | 2012-07-05 | 2014-01-09 | Krones Ag | Blasmaschine und verfahren zum herstellen eines hohlkörpers aus einem vorformling mit einer blasmaschine |
WO2014113853A1 (fr) * | 2013-01-23 | 2014-07-31 | Alves Hélio Vieira | Bidon en plastique et procédé de fabrication de ce bidon, garniture, bouchon de transport, bouchon d'aération, bouchon robinet et support de base à utiliser avec ledit bidon |
DE102014016140A1 (de) * | 2014-10-30 | 2016-05-04 | Khs Corpoplast Gmbh | Verfahren zur Entfernung von Luft aus Vorformlingen zur Herstellung von gefüllten Behältern aus Kunststoff |
EP3212379A1 (fr) * | 2014-10-30 | 2017-09-06 | KHS Corpoplast GmbH | Procédé permettant de chasser l'air d'ébauches aux fins de fabrication de contenants plastique remplis |
WO2018221028A1 (fr) * | 2017-05-30 | 2018-12-06 | 株式会社吉野工業所 | Méthode de fabrication de récipient de liquide |
US11648724B2 (en) | 2017-05-30 | 2023-05-16 | Yoshino Kogyosho Co., Ltd. | Liquid container manufacturing method |
WO2024003552A1 (fr) * | 2022-06-30 | 2024-01-04 | Pulpex Limited | Procédé, ainsi que système de moule |
GB2622789A (en) * | 2022-09-27 | 2024-04-03 | Pulpex Ltd | System for and method of forming receptacle |
Also Published As
Publication number | Publication date |
---|---|
FR2854592A1 (fr) | 2004-11-12 |
WO2004098862A3 (fr) | 2005-02-17 |
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