JPS57207032A - Method of extrusion molding of molding - Google Patents

Method of extrusion molding of molding

Info

Publication number
JPS57207032A
JPS57207032A JP9318381A JP9318381A JPS57207032A JP S57207032 A JPS57207032 A JP S57207032A JP 9318381 A JP9318381 A JP 9318381A JP 9318381 A JP9318381 A JP 9318381A JP S57207032 A JPS57207032 A JP S57207032A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
synthetic resin
space
guide piece
molding
density
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
JP9318381A
Inventor
Katsumi Hara
Original Assignee
Hashimoto Forming Co Ltd
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

Links

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
    • B29C44/00Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/22Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • 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
    • B29C47/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C47/08Component parts, details or accessories; Auxiliary operations
    • B29C47/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C47/58Details
    • B29C47/70Flow dividers
    • B29C47/702Flow dividers comprising means for dividing, distributing and recombining melt flows
    • 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
    • B29C47/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C47/0009Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the articles
    • B29C47/0016Rod-shaped articles
    • 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
    • B29C47/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C47/0009Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the articles
    • B29C47/0019Flat rigid articles, e.g. panels, plates
    • 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
    • B29C47/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C47/0009Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the articles
    • B29C47/003Articles having cross-sectional irregularities, i.e. being non-flat or having cylindrical cross-sections perpendicular to the extrusion direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B29K2105/043Skinned foam

Abstract

PURPOSE:To obtain an molded item excellent in the appearance and feeling of which surface is smooth, by squeezing the synthetic resin part corresponding to the skin part of the surface of a molding to density said synthetic resin part. CONSTITUTION:A synthetic resin 25 that has been compressed by a screw 26 of an extruder 22 is delivered through a breaker plate 27 and a hole 24 to an extrusion space 23, and the flow of the resin 25 is divided toward a space (n) defined by a guide piece 29 situated along an inner wall of the space 23 and toward a space (m) defined by the outer circumference of the guide piece 29 and the inner wall 30. While the synthetic resin flowing outward passes the converged space (m), the extrusion pressure thereof is increased so that the density of the resin is increased, and after the passage through the guide piece 29 the synthetic resin in guestion meets the synthetic resin flowing inward, and is extruded via an aperture 28 to be molded into a synthetic resin item (M) consisting of a skin section Mb having a high density and no bubbles and a solid section Ma.
JP9318381A 1981-06-17 1981-06-17 Method of extrusion molding of molding Granted JPS57207032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9318381A JPS57207032A (en) 1981-06-17 1981-06-17 Method of extrusion molding of molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9318381A JPS57207032A (en) 1981-06-17 1981-06-17 Method of extrusion molding of molding

Publications (1)

Publication Number Publication Date
JPS57207032A true true JPS57207032A (en) 1982-12-18

Family

ID=14075457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9318381A Granted JPS57207032A (en) 1981-06-17 1981-06-17 Method of extrusion molding of molding

Country Status (1)

Country Link
JP (1) JPS57207032A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632242A1 (en) * 1988-06-03 1989-12-08 Arnaud Guy Method of manufacturing a composite material based on expanded thermosetting resin and novel material obtained
WO2004101257A1 (en) * 2003-05-16 2004-11-25 Bayer Sheet Europe Gmbh Grouser plate coated by coextrusion without any triangle effect
CN104228035A (en) * 2014-09-30 2014-12-24 黄石市金鸿模具有限公司 Moulding and foaming extrusion mould applicable to thick and solid PVC wood-plastic material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632242A1 (en) * 1988-06-03 1989-12-08 Arnaud Guy Method of manufacturing a composite material based on expanded thermosetting resin and novel material obtained
WO2004101257A1 (en) * 2003-05-16 2004-11-25 Bayer Sheet Europe Gmbh Grouser plate coated by coextrusion without any triangle effect
US7824589B2 (en) 2003-05-16 2010-11-02 Bayer Polymers Sheet Europe Gmbh Multi-wall sheet without the triangle effect, coated by coextrusion
CN104228035A (en) * 2014-09-30 2014-12-24 黄石市金鸿模具有限公司 Moulding and foaming extrusion mould applicable to thick and solid PVC wood-plastic material
CN104228035B (en) * 2014-09-30 2016-08-24 黄石市金鸿模具有限公司 Suitable for thick, solid wood pvc foam extrusion molding die

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