WO2005018912A1 - Procede de fabrication d'une preforme pour bouteilles en plastique - Google Patents

Procede de fabrication d'une preforme pour bouteilles en plastique Download PDF

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Publication number
WO2005018912A1
WO2005018912A1 PCT/EP2004/007053 EP2004007053W WO2005018912A1 WO 2005018912 A1 WO2005018912 A1 WO 2005018912A1 EP 2004007053 W EP2004007053 W EP 2004007053W WO 2005018912 A1 WO2005018912 A1 WO 2005018912A1
Authority
WO
WIPO (PCT)
Prior art keywords
preform
coating
preforms
transported
friction
Prior art date
Application number
PCT/EP2004/007053
Other languages
German (de)
English (en)
Inventor
Robert Siegl
Original Assignee
Alpla-Werke Alwin Lehner Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alpla-Werke Alwin Lehner Gmbh & Co. Kg filed Critical Alpla-Werke Alwin Lehner Gmbh & Co. Kg
Publication of WO2005018912A1 publication Critical patent/WO2005018912A1/fr

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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
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • 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
    • B29C49/24—Lining or labelling
    • 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
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/22—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at neck portion
    • 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
    • B29C2949/20—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer
    • B29C2949/24—Preforms or parisons whereby a specific part is made of only one component, e.g. only one layer at flange portion
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3016—Preforms or parisons made of several components at body portion
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/302—Preforms or parisons made of several components at bottom portion
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3024—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique
    • B29C2949/3026—Preforms or parisons made of several components characterised by the number of components or by the manufacturing technique having two or more components
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3032—Preforms or parisons made of several components having components being injected
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
    • B29C2949/3074—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
    • B29C2949/3074—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating
    • B29C2949/3078—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating by spray coating
    • 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
    • B29C2949/30—Preforms or parisons made of several components
    • B29C2949/3064—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062
    • B29C2949/3074—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating
    • B29C2949/308—Preforms or parisons made of several components having at least one components being applied using techniques not covered by B29C2949/3032 - B29C2949/3062 said at least one component obtained by coating by dip coating
    • 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
    • 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
    • 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
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B29K2995/0073—Roughness, e.g. anti-slip smooth

Definitions

  • the invention relates to a method for producing a preform for plastic bottles, in particular for PET bottles, according to the preamble of patent claim 1.
  • the plastic bottles are inflated immediately after the production of a preform from the still warm preform according to the cavity of a blow mold.
  • the second method provides that the production of the preforms and the production of the plastic bottles from the preforms take place completely separately from one another in terms of space and time.
  • the preform is first produced in an injection molding process. After cooling, the preform is temporarily stored for later use.
  • the preforms usually manufactured in ⁇ vfehrf ach tools are filled into containers, for example, which enable easy transport and storage.
  • the preformers are reheated and the plastic bottles are inflated or stretch-blown therefrom.
  • the plastic used to manufacture such plastic bottles, polyethylene terephthalate or PET, has relatively poor sliding properties. This makes it difficult to transport the preforms produced in the injection molding process, which is usually carried out via conveyor belts and slide rails.
  • the preforms are separated via conveyor belts and slide rails and transported to the blow molding stations. During transport and especially when storing the preforms, they come to rest against each other. Due to the poor surface properties, the preforms almost stick together. When filling into the transport and storage container, the available volume becomes very low due to the poor sliding properties of the preforms badly used. In addition, damage, scratches, adhesion spots or the like can occur in the surfaces of the preforms during transport and when filling the preforms into the container.
  • the preforms have a friction-reducing coating.
  • the preforms are coated in an immersion bath. Then the preforms are placed around the coating. to dry. After drying the coating, the Preformlinge be WEI 1 * ter transported and stored. " During dip coating, a relatively large amount of coating material is applied to the preform. Part of the coating also drips off " ⁇ ". Therefore, the preforms have to remain in the coating station for a relatively long time, if one does not want to risk contaminating the transport routes. The drying of the coating also takes a certain time and leads to an increase in the manufacturing costs for the preforms.
  • a method is also known in which the preforms are provided with a coating shortly before or only after being placed in the storage container.
  • the coating is poured or sprayed over the preforms from a viewing device arranged above the transport plane of the preforms.
  • the coating then dries inside the storage container.
  • This form of coating leads to relatively uneven results. Shaded areas of the preforms are, for example, not coated at all or only inadequately.
  • the coating also gets into the area of the opening of the preforms and even into the preforms. This is particularly undesirable in the case of bottles for foodstuffs since the coating can impair the taste of the contents.
  • the fact that the coating can also reach areas in which it can come into contact with the subsequent filling material also severely limits the selection of the coatings. In particular, it must be ensured that the coatings cannot cause any health problems.
  • the object of the present invention is therefore to remedy the disadvantages of the prior art methods described.
  • a method for producing preforms for plastic bottles, in particular PET bottles, is to be modified in such a way that the transportation and filling of the preforms are facilitated and damage to the surfaces of the preforms can be avoided. It should be ensured that no coating materials are deposited in areas that can come into contact with the filling material in the later plastic bottle.
  • the new process is intended to enable the production of bottle geometries: «whose edges and corners have so far either not been able to be formed at all or only with an insufficient wall thickness.
  • the invention proposes that the preform, which is preferably produced in an injection molding process, is transported through a coating chamber in which its surface is provided with a friction-reducing coating in some areas prior to its further processing or storage. An area around the opening and the interior of the preform is left out of the coating.
  • the coated preform is transported without an intermediate drying process, immediately after coating to the storage container or for further processing to a blow molding machine. The risk of damaging the surface of preforms is reduced by the friction-reducing coating.
  • the coating ensures that the preforms can slide against each other. This has advantages when separating the preforms and when transporting them on belts or in rail systems. Because of their improved sliding properties, the preforms are also finished in a more orderly state in the storage container.
  • the entire manufacturing process for the preforms is simplified and shortened in time by transporting the preforms further immediately after coating.
  • a drying step can be dispensed with in the method according to the invention.
  • the area around the opening of the preform is left out during the coating. This prevents areas • from being coated that come into contact with the filling material in the plastic bottle produced later.
  • the selection of the coating materials that can be used increases, which can result in cost advantages. Due to the improved sliding properties of the preform, the pre-bubble produced in the subsequent stretch blow molding process can slide better into the edges and corners of the blow mold and also reaches areas that were difficult or impossible to reach with the previous methods. As a result, more complex bottle geometries can now also be produced.
  • the arrangement of the coating chamber is advantageously chosen such that the preform can be transported through the coating chamber in an upright state with the opening oriented upwards.
  • the preforms usually have an approximately cylindrical shape and are closed on one side. Following a circumferential flange, a short collar section protrudes, which is equipped with the opening of the preform. The longer section of the preform extends below the circumferential flange. When aligning and transporting the preforms, they align with the opening upwards due to gravity. In the coating chamber, only the section below the flange is covered by the coating. The flange forms a barrier to that Coating material. This ensures in a simple manner that the collar section and the interior of the preform do not come into contact with the coating material.
  • the coating can be applied, for example, by dipping, painting or else using an electrostatic process. However, it is particularly preferred to coat the preform in a spray.
  • the spray can be concentrated in a very narrow space. It also allows very small amounts of coating to be applied to the surface of the preform. The part of the spray that is not applied is suctioned off and recycled. This largely prevents contamination of the environment or of the transport means for the preforms with the coating material.
  • the coating applied to the preforms in the processes known from the prior art takes on a solid physical state over time. This usually requires a separate drying step.
  • the preform is provided with a coating which has a liquid aggregate state even after the preforming has cooled to ambient temperature.
  • Liquid films as coatings have the advantage that they are better distributed on the surface and lead to a more homogeneous coating.
  • the liquid coating of the preforms is automatically pressed against the blow mold during the blowing process. Part of the coating remains in the blow mold, where it forms a lubricating film that also wets those areas of the bottle that were not optimally wetted on the preform.
  • the distribution process is a dynamic process that is retained over time. This is particularly advantageous when the preforms are stored for a long time. The good sliding properties of the liquid films are retained over a longer period of time.
  • the layer thickness of the coating can be chosen to be very small, particularly in the case of liquid films. It is advantageously about 2 ⁇ m to 100 ⁇ m.
  • the friction-reducing coating materials used are advantageously essentially materials from the group comprising oils, esters, polyols, silicone oils and mixtures of these and their emulsions. The materials mentioned are known for their high level of friction reduction and can be applied very easily to the surface of the preform in the desired thickness in a spray coating process.
  • the method according to the invention for the production of preforms for plastic bottles, in particular PET bottles, can be combined very simply with the known blowing or blowing stretching methods, in which a finished plastic bottle is produced from a preform produced according to the invention.
  • the blow or blow stretching process can directly follow the production of the preform or it can be spatially and / or temporally separated from the production of the preform.
  • a preform according to the invention for the production of plastic bottles, in particular PET bottles, has an essentially cylindrical shape that is closed on one side.
  • the preform has a collar section which adjoins a circumferential flange and is provided with an opening.
  • the body section of the preform extending below the flange is provided with a friction-reducing coating which has a liquid physical state at ambient temperature.
  • Fig. 1 shows an embodiment of a pref ormHngs
  • Fig. 2 shows a coating head of a coating chamber for preforms.
  • a preform shown in FIG. 1 is provided with the reference number 1 as a whole. It has a cylindrical shape that roughly resembles the shape of a test tube.
  • a circumferential flange 4 divides the preform 1 into a collar section 5 and into a cylindrical body section 3 with a closed bottom 3.
  • the collar section 5 is provided with an external thread and has an opening 8 which leads into the interior of the preform 1.
  • the preform 1 is manufactured in an injection molding process and usually consists of polyethylene terephthalate PET. It is a preliminary stage for a PET bottle, which is manufactured from the preform 1 in a blow or stretch blow molding process. Despite their relatively smooth surfaces 6, the manufactured preforms 1 have poor sliding properties. This makes it more difficult to separate the preforms 1, which adhere almost to one another when touched. The poor sliding properties also prove to be disadvantageous for yours
  • the coating chamber u comprises a coating head, which is provided with the reference number 10 in FIG.
  • the coating head 10 has a coating channel 9 which is U-shaped in cross section and through which the preforms 1 are transported in a hanging state.
  • the preforms 1 are supported, for example, on the underside 7 of the radially circumferential flange 4 on two rails spaced apart from one another. It can also be provided that the preforms 1 slide with the underside 7 of the flange 4 directly along the upper sides 11 of the coating head 10 delimiting the U-shaped coating channel 9.
  • a spray of the low-friction coating material is generated in the U-shaped coating channel 9.
  • 9 spray nozzles can be provided in the walls of the U-shaped coating channel, for example.
  • the spray is restricted to the U-shaped coating channel 9 of the coating head 10.
  • a small proportion of the spray mist is deposited on the upper sides 11 that delimit the recess and promotes the sliding properties of the preforms 1 resting on the underside 7 of the flange 4 collar section 5 running above the radial circumferential flange 4 does not come into contact with the coating material.
  • the circumferential flange 4 forms a barrier for the spray mist and prevents it from being able to get into the interior of the preform 1 through the opening 8.
  • the preform hangings 1 are practically coated in the viewing chamber during their transport. An interruption in transport or a deposit of the preforms 1 for a drying process or the like is canceled.
  • the size of the coating grains and the coating head 10 is selected such that several preforms 1 can be coated at the same time.
  • materials are advantageously used which, even after the preform 1 has cooled, form a liquid aggregate. have condition. Suitable materials are, for example, oils, esters, polyols, SiHcon oils, mixtures of these and their emulsions
  • the coating of the preforms has a thickness of approximately 2 ⁇ m to approximately 100 ⁇ m.
  • the friction-reducing coating reduces the risk of damage to the surface of the preforms 1.
  • the coating of the surface 6 of the body section 2 ensures that the preforms 1 slide against one another. This has advantages when separating the preforms 1 and when transporting them on belts or in rail systems. Because of their improved sliding properties, the preforms 1 also settle into the storage container in a more orderly state. This prevents oversized cavities between the preforms 1, and the volume of the storage container is better utilized. The entire manufacturing process for the preforms 1 is simplified and shortened in time by the preforms 1 being transported on immediately after coating.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une préforme pour bouteilles en plastique, en particulier pour bouteilles en PET. Cette préforme est fabriquée, de préférence, par un processus de moulage par injection, pourvue d'un revêtement antifriction et transportée vers un conteneur de stockage ou une souffleuse. Ladite préforme est transportée à travers une chambre d'enduction (9, 10, 11), dans laquelle la surface de cette préforme est partiellement pourvue d'un revêtement antifriction, une zone autour de l'ouverture et l'intérieur de la préforme étant dépourvus de revêtement. La préforme enduite est transportée, sans processus de séchage intermédiaire, immédiatement après l'enduction, vers le conteneur de stockage ou vers une souffleuse en vue d'un traitement ultérieur et forme dans la cavité de soufflage une couche glissante, qui évite l'adhérence de matière sur la cavité de soufflage, aide la formation du corps soufflé ou influe positivement sur l'épaisseur de la paroi dans les coins et les bords.
PCT/EP2004/007053 2003-07-21 2004-06-30 Procede de fabrication d'une preforme pour bouteilles en plastique WO2005018912A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01268/03 2003-07-21
CH12682003 2003-07-21

Publications (1)

Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006049134A1 (de) * 2006-10-18 2008-04-24 Khs Ag Verfahren und Vorrichtung zur Behandlung von Behältern aus Kunststoff
JP2008539726A (ja) * 2005-05-03 2008-11-20 アムジェン インコーポレーテッド スクレロスチン結合作用物質

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5680429A (en) * 1979-12-05 1981-07-01 Yoshino Kogyosho Co Ltd Manufacture of transparent saturated polyester bottle
US4393106A (en) * 1980-10-31 1983-07-12 Toyo Seikan Kaisha Ltd. Laminated plastic container and process for preparation thereof
US4534930A (en) * 1983-02-28 1985-08-13 Toyo Seikan Kaisha, Ltd. Process for producing stretched multilayer polyester bottle
WO1992005026A1 (fr) * 1990-09-13 1992-04-02 Wellstar Holding B.V. Preforme pour bouteille en polyester
WO1999020462A2 (fr) * 1997-10-17 1999-04-29 Plastics Fabrication Technologies, Llc Polyester enrobe d'une couche d'arret

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5680429A (en) * 1979-12-05 1981-07-01 Yoshino Kogyosho Co Ltd Manufacture of transparent saturated polyester bottle
US4393106A (en) * 1980-10-31 1983-07-12 Toyo Seikan Kaisha Ltd. Laminated plastic container and process for preparation thereof
US4534930A (en) * 1983-02-28 1985-08-13 Toyo Seikan Kaisha, Ltd. Process for producing stretched multilayer polyester bottle
WO1992005026A1 (fr) * 1990-09-13 1992-04-02 Wellstar Holding B.V. Preforme pour bouteille en polyester
WO1999020462A2 (fr) * 1997-10-17 1999-04-29 Plastics Fabrication Technologies, Llc Polyester enrobe d'une couche d'arret

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 151 (M - 089) 24 September 1981 (1981-09-24) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008539726A (ja) * 2005-05-03 2008-11-20 アムジェン インコーポレーテッド スクレロスチン結合作用物質
JP2013249303A (ja) * 2005-05-03 2013-12-12 Amgen スクレロスチン結合作用物質
DE102006049134A1 (de) * 2006-10-18 2008-04-24 Khs Ag Verfahren und Vorrichtung zur Behandlung von Behältern aus Kunststoff

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