WO1994001274A1 - Procede pour le moulage de materiaux de finition interieure en carton - Google Patents

Procede pour le moulage de materiaux de finition interieure en carton Download PDF

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Publication number
WO1994001274A1
WO1994001274A1 PCT/JP1993/000951 JP9300951W WO9401274A1 WO 1994001274 A1 WO1994001274 A1 WO 1994001274A1 JP 9300951 W JP9300951 W JP 9300951W WO 9401274 A1 WO9401274 A1 WO 9401274A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
corrugated cardboard
cardboard
molding
cardboard substrate
Prior art date
Application number
PCT/JP1993/000951
Other languages
English (en)
Japanese (ja)
Inventor
Mitsutoshi Ogata
Kunio Cho
Yutaka Sato
Original Assignee
Tri-Wall K.K.
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 Tri-Wall K.K. filed Critical Tri-Wall K.K.
Priority to GB9320497A priority Critical patent/GB2273906B/en
Publication of WO1994001274A1 publication Critical patent/WO1994001274A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/08—Corrugated paper or cardboard
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0077—Shaping by methods analogous to moulding, e.g. deep drawing techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings

Definitions

  • the present invention relates to a method for molding a corrugated cardboard interior material comprising a corrugated cardboard substrate formed into a predetermined shape and a decorative skin material bonded to one surface of the corrugated cardboard substrate.
  • Corrugated cardboard interior materials are used, for example, as ceiling interior materials for automobiles. Conventionally, as a method for forming such corrugated cardboard interior materials, the method disclosed in Japanese Patent Publication No. 57-21003 has been known. I have.
  • the method of forming a corrugated cardboard interior material disclosed in the above-mentioned publication is a method of forming a flat corrugated cardboard substrate in which a liner is bonded to both sides of a corrugated core via a thermoplastic resin film as shown in FIG. Then, using the same mold, a decorative skin material, usually made of a resin sheet, is laminated on the above-formed corrugated cardboard substrate via a heat-soluble adhesive such as a hot melt sheet, and then heated again. The pressure is applied to melt the adhesive so that the skin material and the corrugated cardboard substrate are bonded to each other.
  • the skin material is adhered to the corrugated cardboard substrate after molding by directly using the mold for hot press formed by heating and pressurizing the corrugated cardboard substrate. Until the bonding between the skin material and the corrugated cardboard substrate is completed, the corrugated cardboard substrate is kept in a heated state, and the resin film for bonding the liner and the core is in a molten state. Since it does not completely solidify immediately afterwards, there is a problem that spring backing occurs and often causes deformation of the molded product. .
  • the molding step of the corrugated cardboard substrate and the bonding step of the decorative skin material are performed using the same mold.
  • SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and aims at improving quality by preventing deformation due to springback after molding, and improving productivity and manufacturing. It is an object of the present invention to provide a method for forming a corrugated cardboard interior material that can also reduce the manufacturing cost. Disclosure of the invention
  • a flat corrugated cardboard substrate having a liner bonded to both sides of a corrugated core via a thermoplastic resin film is firstly subjected to a hot press device.
  • the temperature is high enough to leave enough heat to melt the heat-soluble adhesive on the corrugated board surface after the molding is completed and the mold is released, but at a temperature such that the paper constituting the corrugated board is not scorched during molding.
  • press and mold are then treated from the mold of the hot press machine and immediately transferred to the mold of the cold press machine, and the decorative skin material is overlaid on the surface thereof via a heat-soluble adhesive.
  • a cold press is performed before the temperature of the corrugated cardboard substrate surface decreases, and the adhesive is melted by using the residual heat of the corrugated cardboard substrate to bond the corrugated cardboard substrate and the skin material.
  • thermoplastic resin interposed between the core of the corrugated base material and the liner and melted during the molding process of the corrugated base material becomes cold during the bonding process of the skin material. It cools and solidifies while it is in the molding die of the press device, and at the time of demolding, it completely solidifies and the potential for springback disappears.
  • the product can surely maintain the formed shape, and the quality is improved, so the commercial value can be increased.
  • the hot press device used in the corrugated board forming process is ready for use in the next forming when the skin material bonding process is performed, while the cold press device that performs the skin material bonding process is a corrugated cardboard base. Since the material forming process is ready for the next use when it is performed, the machine can be used efficiently by alternately operating it.
  • the corrugated base material for the molding cycle was charged during the pressurization time of the cold press process, and the mold cardboard substrate and the skin material for the next molding cycle were charged during the hot pressing process. Since each operation can be performed during the pressurization time, the work efficiency can be improved by eliminating the waiting time of the operator.
  • FIG. 1 is a sectional view of a flat corrugated cardboard substrate used in the present invention.
  • FIG. 2 is an explanatory view showing a hot press molding step of a cardboard substrate.
  • FIG. 3 is an explanatory view showing a step of transferring a molded cardboard substrate to a cold press device.
  • FIG. 4 is an explanatory diagram showing a process of bonding a molded corrugated ball base material and a decorative skin material by cold pressing.
  • FIG. 5 is an explanatory diagram showing a product release process.
  • Fig. 6 is a cross-sectional view of a product corrugated cardboard interior material.
  • A is a corrugated cardboard substrate used in the method of the present invention.
  • the corrugated cardboard substrate A is a corrugated core 1, and a thermoplastic resin film 2 such as a polyethylene film on both sides of the core, respectively.
  • the liner 4 is bonded to the core 1 via a liner 3, and one of the liners 4 is completely bonded to the core 1, while the other liner 5 is pressed during press forming. Only five sides are temporarily fixed so as to allow relative sliding between the core 5 and the core 1.
  • This corrugated cardboard substrate usually has a flat plate shape.
  • the flat plate-shaped corrugated cardboard substrate A is heated and pressed by a hot press device B to form a predetermined shape.
  • the hot press device B has a conventionally known structure and form including a fixed lower die B1 composed of a female die and a movable upper die B2 composed of a male die.
  • the molding surface portion 2 is heated to a required molding temperature by a suitable heating means.
  • the corrugated cardboard substrate A is placed on the fixed lower die B1 of the hot press device B with the liner 5 temporarily fixed to the core 1 facing upward, and the movable upper die B2 is lowered to form both die B Press and heat between 1 and B 2 to form.
  • the heating temperature is preferably about 220 ° C.
  • thermoplastic resin films 2 and 3 such as a polyethylene film interposed between the core 1 and the liners 4 and 5.
  • the temperature is set at about 130 ° C, which is sufficient to melt the resin films 2 and 3.However, as described above, by molding at a heating temperature significantly higher than that, the melting of the films 2 and 3 becomes faster, and the pressing time is reduced. It can be shortened.
  • the movable upper die B2 is raised, and the molded cardboard base material A 'is released from the fixed lower die B1.
  • the resin films 2 and 3 interposed between the core 1 and the liners 1 and 4 are in a molten state and have not yet been solidified. Forces are in a possible state.
  • the corrugated cardboard substrate A ′ which has been removed from the mold after the above-mentioned molding, is immediately transferred to a cold press machine, and a decorative skin material 7 is overlaid on the surface thereof with a heat-soluble adhesive 6 and pressed.
  • a hot press device B after removing the molded corrugated cardboard substrate A' The cardboard substrate A for the next molding cycle is charged.
  • the decorative skin material 7 is usually made of a resin sheet when the cardboard interior material D to be manufactured is, for example, a ceiling interior material of an automobile, and the heat-soluble adhesive 6 is made of, for example, a polyolefin-based or polyamide-based hot melt film.
  • This hot melt film may be preliminarily laminated on the back surface of the skin material 7 as shown in the illustrated example, or may be formed into a film sheet and transferred to a cold press machine C. It may be placed on the cardboard substrate A '.
  • the cold press C is the same as the hot press B, and the female fixed lower die It differs from a hot press device in that it does not have a heating device, which consists of C1 and a male movable upper die C2.It must have a cooling device to cool the molding surface if necessary. There is also.
  • the clearance is formed larger than that of the upper and lower molds B 1 and B 2 of the hot press machine B by an amount corresponding to the thickness of the decorative skin material 7. Except for the above, it is formed in exactly the same shape as the molded portions of the upper and lower dies B1, B2 of the hot press device B.
  • a residual heat of about 130 ° C sufficient to melt the hot melt film 6 still remains on the corrugated cardboard substrate A, which has been removed from the hot press apparatus B and introduced into the cold press apparatus C.
  • the hot-melt film 6 is melted by the residual heat of the molded cardboard substrate A, and adheres the cardboard substrate A 'and the decorative skin material 7 by pressing.
  • the molds C1 and C2 are opened and demolded to obtain the interior material D made of corrugated cardboard, which is a product.
  • the temperature of the thermoplastic resin 2, 3 between the core 1 of the base material A, 1 and the liners 4, 5 decreases.
  • thermoplastic resins 2 and 3 proceeds, and the shape of the product D is reliably maintained.
  • the removal of the cold press device C and the charging of the molded cardboard substrate A 'and the skin material 7 for the next molding cycle can be performed during the heating and pressurizing time in the hot pressing process.
  • the method for forming an interior material made of corrugated cardboard according to the present invention is useful as a method for manufacturing interior materials for automobiles, ships, houses, etc. using a corrugated cardboard substrate. Suitable for wood production.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

L'invention se rapporte à un procédé pour mouler un matériau de finition intérieure en carton, qui se compose d'un substrat de carton moulé dans une feuille prédéterminée et d'un matériau de surface externe décoratif collé contre l'une des surfaces du substrat, et qui est utilisé comme matériau de finition intérieure pour le plafond d'une automobile. A cet effet, un substrat de carton plat obtenu par collage de garnissages sur les deux côtés d'une feuille centrale ondulée par l'intermédiaire de films de résine thermoplastique, est d'abord moulé par pression à chaud au moyen d'une presse à chaud à une température élevée choisie pour que d'une part la chaleur, dont la température est suffisamment haute pour faire fondre un agent de collage thermofusible, reste sur la surface du substrat de carton après que celui-ci a fini d'être moulé et qu'il a été sorti de la presse à chaud, et pour que d'autre part le carton constituant le substrat ne brûle pas pendant son moulage. Ce substrat de carton moulé est ensuite sorti de la presse à chaud et transféré dans un moule à l'intérieur d'une presse à froid, et un matériau de surface décoratif lui est superposé par l'intermédiaire d'un agent de collage thermofusible, le substrat et le matériau de surface étant mis en contact étroit l'un contre l'autre par la presse à froid. On fait fondre l'agent de collage en utilisant la chaleur restante du substrat de carton, pour coller le substrat et le matériau de surface l'un contre l'autre. Pendant cette étape de collage de matériau de surface décoratif, la résine thermoplastique comprise entre la feuille centrale du substrat de carton et les garnissages est solidifiée pour fixer sa configuragion, afin qu'aucun décollage par effet de ressort ne puisse se produire.
PCT/JP1993/000951 1992-07-10 1993-07-09 Procede pour le moulage de materiaux de finition interieure en carton WO1994001274A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9320497A GB2273906B (en) 1992-07-10 1993-07-09 Forming method for interior trim material made of corrugated cardboard

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4/183688 1992-07-10
JP4183688A JP2609032B2 (ja) 1992-07-10 1992-07-10 段ボール製内装材の成形方法

Publications (1)

Publication Number Publication Date
WO1994001274A1 true WO1994001274A1 (fr) 1994-01-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/000951 WO1994001274A1 (fr) 1992-07-10 1993-07-09 Procede pour le moulage de materiaux de finition interieure en carton

Country Status (3)

Country Link
JP (1) JP2609032B2 (fr)
GB (1) GB2273906B (fr)
WO (1) WO1994001274A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113231532A (zh) * 2021-06-09 2021-08-10 东风柳州汽车有限公司 一种冲压分切方法及冲压模具

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29602348U1 (de) * 1996-02-10 1996-03-28 Fa. F. Luce Verpackungswerk, 33647 Bielefeld Schalenartiges Formteil
JP3411951B2 (ja) * 1996-07-31 2003-06-03 東洋アルミホイルプロダクツ株式会社 紙容器
US5863370A (en) * 1996-12-19 1999-01-26 United Technologies Automotive, Inc. Method of bonding cloth cover to substrate base
JP5916066B2 (ja) * 2011-10-25 2016-05-11 富士ダンボール工業株式会社 湾曲段ボールシートの製造方法および製造装置
JP5930755B2 (ja) * 2012-02-14 2016-06-08 丸一興業株式会社 湾曲状段ボールの形成方法
KR101486365B1 (ko) * 2014-08-08 2015-01-26 (주)아주프라텍 플라스틱 골판지 제조 장치 및 그 방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS572103B2 (fr) * 1976-07-14 1982-01-14
JPS5756254A (en) * 1980-09-18 1982-04-03 Toyota Motor Co Ltd Manufacture of shape made of corrugated cardboard
JPS5836442A (ja) * 1981-08-27 1983-03-03 池田物産株式会社 段ボ−ル製内装材の製造法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS572103B2 (fr) * 1976-07-14 1982-01-14
JPS5756254A (en) * 1980-09-18 1982-04-03 Toyota Motor Co Ltd Manufacture of shape made of corrugated cardboard
JPS5836442A (ja) * 1981-08-27 1983-03-03 池田物産株式会社 段ボ−ル製内装材の製造法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113231532A (zh) * 2021-06-09 2021-08-10 东风柳州汽车有限公司 一种冲压分切方法及冲压模具

Also Published As

Publication number Publication date
GB2273906B (en) 1996-07-31
JPH0623883A (ja) 1994-02-01
GB2273906A (en) 1994-07-06
JP2609032B2 (ja) 1997-05-14
GB9320497D0 (en) 1994-04-27

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