DE10320683A1 - Back injecting a decorative material, comprises applying a barrier layer to the decorative material, and back injecting a plastic material - Google Patents

Back injecting a decorative material, comprises applying a barrier layer to the decorative material, and back injecting a plastic material Download PDF

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Publication number
DE10320683A1
DE10320683A1 DE2003120683 DE10320683A DE10320683A1 DE 10320683 A1 DE10320683 A1 DE 10320683A1 DE 2003120683 DE2003120683 DE 2003120683 DE 10320683 A DE10320683 A DE 10320683A DE 10320683 A1 DE10320683 A1 DE 10320683A1
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DE
Germany
Prior art keywords
decorative
barrier layer
layer
composite
plastic
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.)
Granted
Application number
DE2003120683
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German (de)
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DE10320683B4 (en
Inventor
Ingo Spengler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Priority to DE10320683.3A priority Critical patent/DE10320683B4/en
Publication of DE10320683A1 publication Critical patent/DE10320683A1/en
Application granted granted Critical
Publication of DE10320683B4 publication Critical patent/DE10320683B4/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14836Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
    • B29C2045/14844Layers protecting the insert from injected material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/30Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005Body finishings
    • B29L2031/3041Trim panels

Abstract

A process for back injecting a decorative material (12) to form a laminar material (10), comprises applying a barrier layer (14) to the decorative material followed by back injecting a plastic material (16). The barrier layer consists of a mesh or web material made eg of a synthetic fibre. A process for back injecting a decorative material (12) to form a laminar material (10), comprises applying a barrier layer (14) to the decorative material followed by back injecting a plastic material (16). The barrier layer consists of a mesh or web material made eg of a synthetic fibre. The barrier layer mass is 30-300 g/m2> and the decorative material is applied before the barrier layer. The decorative layer consists of a textile or foam. A foam layer (18) is located between the decorative layer and barrier layer.

Description

  • The The invention relates to a method for back-molding a decorative material and a composite product that can be produced by the method.
  • Decorative Surfaces, especially of vehicle interiors, are produced by back injection molding. Decorative materials, for example plastic films or textiles, in injection molds inserted and then with a flowable plastic molding compound on a side of the decorative material facing away from a visible side, the spray side, back injection. After the plastic molding compound has hardened reserves the composite product thus produced is formed by a molding space injection mold given outer shape.
  • Around damage the sensitive decorative material through the hot plastic molding compound during the Avoiding back injection is known to decorate the front the back injection on its spray side with a barrier layer to be laminated from fleece. The fleece layer connects in the following Injection molding with the plastic layer. For effective protection to ensure the decorative material when injecting are relatively high Layer thicknesses of the fleece required. This leads to a high weight and high cost. Furthermore, the barrier layer can form wrinkles cause that visually disadvantageously transferred to the decorative material.
  • The The invention is therefore based on the object of a method for back injection to provide a decorative material that is back-injected Composite product with as much as possible low weight leads and is feasible at low cost. A corresponding composite product is also to be made available become.
  • This Task is achieved by a method with the features of the claim 1 and a composite product according to claim 8 solved.
  • According to the invention is considered Barrier layer a knitted or woven material, in particular a Woven, knitted or knitted fabric. Knitted or woven materials have opposite according to the status fleece materials used in technology have the advantage of a higher resistance across from the plastic molding compound. This enables the use of fewer Layer thicknesses, the so-called grammage, resulting in the barrier layer in the desired one Reduction of costs and weight of the composite product. It has also proven to be advantageous that the used according to the invention Due to their elasticity, knitted or woven materials hardly cause wrinkles due to the shear forces acting during the back injection.
  • barrier layers made of synthetic fiber (man-made fiber) because of the good stability and the low raw material prices have proven to be particularly advantageous. moreover they are suitable for permanent fusion with the plastic molding compound.
  • Depending on the use, the barrier layer can have a grammage of 30 to 300 g / m 2 .
  • It is also possible the decor material first all or part of its spray side with a foam layer to be laminated before the lamination with the barrier layer takes place. Such molded moldings underlaid with foam are special in vehicle interiors common.
  • The Composite product according to the invention includes a decorative material layer with a visible and a spray side, a spray layer arranged on the spray side made of a mesh and woven goods material and a plastic layer adjoining the barrier layer. Optionally, between the decorative material layer and the barrier layer whole or partial a foam layer can be arranged.
  • The Composite material according to the invention is suitable themselves particularly advantageous for Vehicle interior linings, for example for pillar, side or vehicle door linings.
  • Further preferred embodiments of the invention are the subject of the remaining subclaims.
  • The In the following, the invention is described in exemplary embodiments on the basis of the associated Drawings closer explained. Show it:
  • 1 a composite product according to a first embodiment of the invention and
  • 2 a composite product according to a second embodiment of the invention.
  • 1 shows a total with 10 designated composite product in a sectional view. The composite product 10 has a decorative material layer 12 with a visible side A and a spray side B. The decor material 12 can be a textile or a foam material that is compressed on its visible side A to form a film.
  • The decorative material is on its spray side B. 12 with a barrier layer 14 connected, which according to the invention is a textile knitted or woven material. In particular, can be used as a barrier layer a fabric, knitted fabric or knitted fabric preferably consisting of a synthetic fiber can be used.
  • Spray side connects to the barrier layer 14 an injection molded plastic layer 16 made of a thermoplastic or thermosetting plastic material.
  • The production of the composite product 10 out 1 done by first the decorative material 12 with the barrier layer 14 is laminated by a conventional lamination process. The barrier layer made of knitted or woven material preferably has a grammage of 30 to 300 g / m 2 . The composite material that is created during lamination 12 and barrier layer 14 is then placed in an injection mold and with the flowable hot plastic molding compound 16 back-molded. The visible side A of the decorative material 12 pressed against a die of the injection mold, which depicts an outer contour of the molded part to be produced. After the plastic has hardened 16 keeps the composite product 10 this shape permanently. In this way, complex shapes can be created. It is also conceivable that the decorative material is formed by the appropriately designed die surface 12 gets a desired texture.
  • During the back injection process of the composite material 12 and spray barrier 14 becomes the plastic molding compound 16 prevented from penetrating to the often delicate decorative material and damaging it. The plastic molding compound 16 anchored / connects to the material of the barrier layer 14 , so that there is a permanent connection between the plastic acting as a carrier 16 and the decor material 12 results.
  • Another embodiment of a composite product according to the invention 10 is in 2 shown. In deviation from the embodiment according to 1 is here between decorative material 12 and spray barrier 14 a layer of foam 18 , which consists of a polyurethane (PU), polypropylene (PP) or polyethylene (PE) foam. The foam layer 18 can be provided over the entire surface as shown or also only be present in partial areas.
  • The manufacture of the composite material after 2 done by first the decorative layer 12 who have favourited Foam Layer 18 and the barrier layer 14 can be laminated from one another in a knitting or weaving material or in a one-step process. Then the entire composite is made of a decorative layer 12 , Foam layer 18 and barrier layer 14 placed in the injection mold and on the injection side B with the plastic molding compound 16 back-molded. The use of the barrier layer 14 is particularly suitable for foam-laminated decorative materials 12 important, since the foam layer in particular is often damaged during back injection.
  • 10
    composite product
    12
    decor
    14
    barrier material
    16
    Plastic insert molding
    18
    foam
    A
    Main page
    B
    injection site

Claims (10)

  1. Process for back injection of a decorative material ( 12 ) where the decorative material ( 12 ) on its spray side (B) with a barrier layer ( 14 ) is laminated and then with a plastic molding compound ( 16 ) is injected, characterized in that as a barrier layer ( 14 ) a knitted or woven material is used.
  2. A method according to claim 1, characterized in that as a barrier layer ( 14 ) a woven, knitted or knitted fabric is used.
  3. A method according to claim 1 or 2, characterized in that the barrier layer ( 14 ) consists of a synthetic fiber.
  4. Method according to one of the preceding claims, characterized in that the barrier layer ( 14 ) has a grammage of 30 to 300 g / m 2 .
  5. Method according to one of the preceding claims, characterized in that the decorative material ( 12 ) before lamination with the barrier layer ( 14 ) on its spray side (B) over its entire surface or in part with a foam layer ( 18 ) is covered.
  6. Method according to one of the preceding claims, characterized in that the decorative material ( 12 ) a textile or a foam material is used.
  7. Method according to one of the preceding claims, characterized in that the plastic molding compound ( 16 ) a thermoplastic or thermosetting plastic is used.
  8. Composite product that can be produced by a method according to one of Claims 1 to 7, with a decorative material layer (1) with a visible side (A) and a spray side (B) 12 ), a spray layer on the spray side ( 14 ) and one to the barrier layer ( 14 ) subsequent plastic layer ( 16 ), characterized in that the barrier layer ( 14 ) is a knitted or woven material.
  9. Composite product according to claim 8, characterized in that between the decorative material layer ( 12 ) and the barrier layer ( 14 ) full or partial surface of a foam layer ( 18 ) is arranged.
  10. Composite material according to claim 8 or 9, characterized characterized in that the composite material is a vehicle interior lining, especially a pillar, Side or one Vehicle door trim is.
DE10320683.3A 2003-04-30 2003-04-30 Process for the injection molding of a decorative material and composite product that can be produced by the process Expired - Fee Related DE10320683B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10320683.3A DE10320683B4 (en) 2003-04-30 2003-04-30 Process for the injection molding of a decorative material and composite product that can be produced by the process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10320683.3A DE10320683B4 (en) 2003-04-30 2003-04-30 Process for the injection molding of a decorative material and composite product that can be produced by the process

Publications (2)

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DE10320683A1 true DE10320683A1 (en) 2004-11-18
DE10320683B4 DE10320683B4 (en) 2016-09-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011954A1 (en) * 1970-03-13 1971-10-21 Wachsmann E Laminate for surface treatment of injection mouldings
DE4122412A1 (en) * 1991-07-06 1993-01-14 Bayer Ag Moulding prodn. with decorative surface - by inserting decorative material with edge bent inwards in injection moulding tool
DE19836193A1 (en) * 1998-05-27 1999-12-02 Fritzmeier Composite Gmbh & Co Applying coating to object for hardening in mold under heat and pressure
DE10020993A1 (en) * 2000-04-28 2001-10-31 Bayerische Motoren Werke Ag Rear injection against plastic protector covering sheet in mold, causes protector melting and redistribution
DE10143883A1 (en) * 2001-09-07 2003-03-27 Magna Eybl Gmbh Multi-layer vehicle interior panel manufacture involves molding a skin onto a prefabricated carrier layer without adhesives

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4127241C2 (en) * 1991-08-17 1994-06-01 Bayer Ag Process for producing molded parts with a surface covered by decorative material by back injection, and molds for carrying out the process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2011954A1 (en) * 1970-03-13 1971-10-21 Wachsmann E Laminate for surface treatment of injection mouldings
DE4122412A1 (en) * 1991-07-06 1993-01-14 Bayer Ag Moulding prodn. with decorative surface - by inserting decorative material with edge bent inwards in injection moulding tool
DE19836193A1 (en) * 1998-05-27 1999-12-02 Fritzmeier Composite Gmbh & Co Applying coating to object for hardening in mold under heat and pressure
DE10020993A1 (en) * 2000-04-28 2001-10-31 Bayerische Motoren Werke Ag Rear injection against plastic protector covering sheet in mold, causes protector melting and redistribution
DE10143883A1 (en) * 2001-09-07 2003-03-27 Magna Eybl Gmbh Multi-layer vehicle interior panel manufacture involves molding a skin onto a prefabricated carrier layer without adhesives

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Publication number Publication date
DE10320683B4 (en) 2016-09-29

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