USH827H - Process for manufacturing molded outer covering - Google Patents

Process for manufacturing molded outer covering Download PDF

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Publication number
USH827H
USH827H US06/731,643 US73164385A USH827H US H827 H USH827 H US H827H US 73164385 A US73164385 A US 73164385A US H827 H USH827 H US H827H
Authority
US
United States
Prior art keywords
powder
resin materials
outer covering
powder mixture
process according
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.)
Abandoned
Application number
US06/731,643
Other languages
English (en)
Inventor
Kouichi Yamagishi
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.)
Inoac Corp
Original Assignee
Inoue MTP KK
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 Inoue MTP KK filed Critical Inoue MTP KK
Assigned to INOUE MTP KABUSHIKI KAISHA reassignment INOUE MTP KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: YAMAGISHI, KOUICHI
Application granted granted Critical
Publication of USH827H publication Critical patent/USH827H/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F5/00—Designs characterised by irregular areas, e.g. mottled patterns
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/22—Making multilayered or multicoloured articles
    • 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
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0007—Manufacturing coloured articles not otherwise provided for, e.g. by colour change
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/04—Modelling plastic materials, e.g. clay
    • B44C3/046—Modelling plastic materials, e.g. clay using a modelling surface, e.g. plate
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/18—Slush casting, i.e. pouring moulding material into a hollow mould with excess material being poured off
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2105/251—Particles, powder or granules
    • 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
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured
    • B29K2995/0021—Multi-coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings

Definitions

  • the present invention relates to a process for manufacturing a molded outer covering, in particular having an outer surface with a pepper and salt pattern having different colours.
  • Various interior devices of an automobile such as an instrument panel, or outer surface of a door trim or an interior ceiling are usually covered with an outer covering to provide a comfortable compartment to a driver or passanger.
  • Known outer coverings for an automobile are usually made of a plastic sheet which is, in turn, made by a calendar machine and which is molded into a desired shape in a vacuum forming process or the like.
  • a plastic outer covering having a single colour or a few limited colours by the vacuum process of a plastic sheet, and accordingly, molded products obtained often result in lack of variety in colour and pattern.
  • a compartment of an automatic tends to become dirty or unclean by mud or dust which enters the compartment when a door of the automobile is opened or closed or when a passanger gets in or out of the automobile.
  • the plastic product tends to become charged with static electricity, so that the dust or dirt can be easily applied to the outer surfaces of the plastic product.
  • the applied dust or the dirt is conspicuous, in view of the lack of variety in the colour or pattern of the plastic covering, thus resulting in a bad influence on the aesthetic impression of the compartment.
  • the primary object of the present invention is to eliminate the drawbacks mentioned above by providing a process for manufacturing an outer covering suitable for interior devices or interior surfaces of an automobile, in which a covering having desired patterns and colours can be easily obtained.
  • the object of the present invention is to provide an improved process for manufacturing an outer covering which has a decorative and aesthetic appearance with a pepper and salt pattern having different colours and in which dust or dirt even if adhered to the outer surface of the covering is not conspicuous.
  • Another object of the present invention is to provide a process for manufacturing a relatively thin and soft molded product which is agreeable to the touch and which can be advantageously used as an outer covering.
  • Still another object of the present invention is to provide a manufacturing process in which an outer covering having a desired shape or profile can be easily and effectively obtained.
  • a process for manufacturing an outer covering comprising the steps of mixing two or more powder resin materials having different colours at a desired mixing ratio to make a single powder mixture, and then heating the powder mixture thus obtained in a preheated molding die to melt the mixture thereby to obtain a molded outer covering which has a pepper and salt pattern having different colours on its outer surface.
  • FIG. 1 is a schematic view of a powder mixture of which an outer covering of the present invention is made
  • FIG. 2 is a sectional view of a molding die in which the powder mixture is charged.
  • FIG. 3 is an enlarged schematic view of a molded product, i.e. an outer covering manufactured by the present invention.
  • FIG. 1 schematically shows a powder mixture of which an outer covering can be made.
  • the powder mixture is made of two or more powder resin materials A, B, . . . having different colours which are mixed at a desired mixing ratio.
  • the powder resin materials A, B, etc. can be identical to each other, for example, both soft polyvinyl chloride (PVC) or its copolymers.
  • the powder resin materials may be different from or similar to each other, for example one is PVC and the other is PVC copolymer.
  • the powder resin materials have different colours.
  • the difference in hue and brightness between the colours of the powder resin materials depends on design choice, in accordance with patterns to be formed on an outer surface of a product.
  • the powder resin materials have different grain sizes.
  • the powder resin materials are both PVC powders, fundamentally the melting temperatures of the powders depend on degree of polymerization of the copolymer or the amount of copolymer, etc. Accordingly, PVC powders having different melting temperatures can be easily obtained, for example, by selecting the degree of polymerization of the powders.
  • the melting temperatures of PVC powders used in the present invention are 160° C. to 220° C.
  • the melting temperatures of PVC powder used in the present invention are determined by selecting a mean degree (P) of polymerization thereof.
  • Additives, such as plasticizers, stabilizers, fillers, etc. can be kneaded in PVC powders, together with stains or colouring agents.
  • the sizes of grains of PVC powders used in the present invention are approximately 50 ⁇ to 200 ⁇ . By using a screening means, PVC powders having different grain sizes (diameters) can be easily obtained.
  • These powder resin materials are mixed at a desired mixing ratio to make a single powder mixture, in accordance with a property of matter or appearance of a product.
  • powder mixtures which can be advantageously used in the present invention.
  • the powder resin materials A, B and C in the examples are all PVC's.
  • a predetermined amount of the powder mixture as mentioned above is loaded in a molding die 2 which has a cavity 1 of a desired shape, as shown in FIG. 2.
  • the molding die 2 is preheated at a predetermined temperature (150° ⁇ 200° C.), so that the powder mixture loaded in the die 2 can be heated with the result that the powder mixture melts and the grains of the powder are adhered to each other. An excess of powder is removed from the die.
  • a predetermined temperature 150° ⁇ 200° C.
  • a further heating of the die 2 takes place for a predetermined time to heat the powder, by means of a heating device 4 which will be described hereinafter, resulting in a complete adhesion of the grains and also in the formation of a desired thickness of molten resin layer.
  • the die 2 can be rotated or revolved to provide a uniform adhesion of the grains of the powder.
  • the die 2 is cooled to cure the resin layer, so that a cured outer covering made of a resinous sheet having a desired shape can be obtained.
  • the powder resin materials to be mixed have different colours and preferably different melting temperatures and/or different grain sizes, and, accordingly, the outermost surface of the molded product 3 coming into contact with the surface of the die cavity 1 has the appearance of the mixed resin materials used. Consequently, the appearance of the product has a pepper and salt pattern which is produced by the difference in the melting temperature, color, and grain size between the resin materials to be mixed and in which some of the grains clearly appear and others do not.
  • the heating device 4 is provided in the die 2 and is preferably in the form of a sheathed heater.
  • the sheathed heater can be replaced with a pipe in which a heating medium flows.
  • the pipe can be used as a cooling means for the molding die, by properly controlling the temperature of the heating medium.
  • the molded product since two or more powder resin materials having different colours are mixed at a desired mixing ratio to make a single powder mixture and then the powder mixture is loaded in a molding die which is preheated to heat and melt the powder mixture, the molded product has a pepper and salt pattern on its outer surface, in accordance with a mixing state and a mixing ratio, of the powder resin materials. Furthermore, according to the present invention, the pepper and salt pattern can be modified by changing the colour, the grain size, etc., of the powder materials. Accordingly, outer coverings having various patterns on the outer surfaces thereof can be easily manufactured by the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Moulding By Coating Moulds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
US06/731,643 1984-05-16 1985-05-07 Process for manufacturing molded outer covering Abandoned USH827H (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59098383A JPS60242019A (ja) 1984-05-16 1984-05-16 表皮材の成形方法
JP59-98383 1984-05-16

Publications (1)

Publication Number Publication Date
USH827H true USH827H (en) 1990-10-02

Family

ID=14218342

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/731,643 Abandoned USH827H (en) 1984-05-16 1985-05-07 Process for manufacturing molded outer covering

Country Status (5)

Country Link
US (1) USH827H (ja)
JP (1) JPS60242019A (ja)
CA (1) CA1254015A (ja)
DE (1) DE3517251A1 (ja)
FR (1) FR2564772B1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6015519A (en) * 1995-05-01 2000-01-18 Pyramid Composities Manufacturing Limited Partnership Densified coating process and molded articles having densified outer surface
CN103802741A (zh) * 2014-02-17 2014-05-21 银薪舟 一种使汽车外壳3d变色的方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1197484B (it) * 1986-10-07 1988-11-30 Mazzucchelli Celluloide Spa Procedimento per la produzione di effetti di colore a sfumatura nella massa di lastre di materiale plastico
FR2605263B1 (fr) * 1986-10-16 1989-04-14 Peugeot Procede de fabrication d'un panneau de garnissage et panneau obtenu par ce procede
DE19539261C2 (de) * 1995-10-21 1998-11-12 Benecke Kaliko Ag Verfahren zur Herstellung einer mehrfarbigen thermoplastischen Kunststoffolie sowie mehrfarbige thermoplastische Kunststoffolie
US6083446A (en) * 1996-10-18 2000-07-04 Banecke-Kaliko Ag Process for producing a multi-colored thermoplastic plastics foil, and a multi-colored thermoplastic plastics foil
DE10022638A1 (de) * 2000-04-28 2001-10-31 Volkswagen Ag Verfahren und Vorrichtung zur Herstellung einer Doppelslushhaut
DE10112363A1 (de) * 2001-03-15 2002-09-19 Bayerische Motoren Werke Ag Formaufschmelzverfahren
DE102009060943A1 (de) * 2009-12-30 2011-07-14 Faurecia Innenraum Systeme GmbH, 76767 Formhaut und Verfahren zur Herstellung einer Formhaut

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414642A (en) 1966-03-11 1968-12-03 Robinson Lewis And Rubin Method of manufacturing ornamental plastic products
US4175050A (en) 1976-10-21 1979-11-20 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Shaped washing agents having a mosaic-like structure and process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB968760A (en) * 1962-08-29 1964-09-02 Standard Pressed Steel Co Improvements in producing articles having a plurality of surface portions of different colours, particularly seat or other upholstery coverings
FR2165780A1 (en) * 1971-12-30 1973-08-10 Ciraud Pierre Composite rotational mouldings - using particle size differentials to ensure preferential sedimentation of component mater
GB1383602A (en) * 1972-10-12 1974-02-12 Ici Ltd Moulded articles
JPS60228114A (ja) * 1984-04-25 1985-11-13 Mitsuboshi Belting Ltd 合成樹脂表皮体の製造法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414642A (en) 1966-03-11 1968-12-03 Robinson Lewis And Rubin Method of manufacturing ornamental plastic products
US4175050A (en) 1976-10-21 1979-11-20 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Shaped washing agents having a mosaic-like structure and process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Zimmerman et al. (Zimmerman), "molding powdered polyethylene", Modern Plastics Encyclopedia Issue for 1963, vol. 40, No. 1A, pp. 717-720 (Sep. 1962).

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6015519A (en) * 1995-05-01 2000-01-18 Pyramid Composities Manufacturing Limited Partnership Densified coating process and molded articles having densified outer surface
CN103802741A (zh) * 2014-02-17 2014-05-21 银薪舟 一种使汽车外壳3d变色的方法
CN103802741B (zh) * 2014-02-17 2015-12-30 银薪舟 一种使汽车外壳3d变色的方法

Also Published As

Publication number Publication date
FR2564772B1 (fr) 1990-06-01
DE3517251A1 (de) 1985-11-21
FR2564772A1 (fr) 1985-11-29
JPS60242019A (ja) 1985-12-02
CA1254015A (en) 1989-05-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: INOUE MTP KABUSHIKI KAISHA, 13-4, 2-CHOME, MEIEKI-

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:YAMAGISHI, KOUICHI;REEL/FRAME:004403/0525

Effective date: 19850429

STCF Information on status: patent grant

Free format text: PATENTED CASE