CA2013383A1 - Method for the manufacture of thermoplastic resin sheets - Google Patents

Method for the manufacture of thermoplastic resin sheets

Info

Publication number
CA2013383A1
CA2013383A1 CA2013383A CA2013383A CA2013383A1 CA 2013383 A1 CA2013383 A1 CA 2013383A1 CA 2013383 A CA2013383 A CA 2013383A CA 2013383 A CA2013383 A CA 2013383A CA 2013383 A1 CA2013383 A1 CA 2013383A1
Authority
CA
Canada
Prior art keywords
thermoplastic resin
slit
resin sheets
extrusion
manufacture
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
CA2013383A
Other languages
French (fr)
Other versions
CA2013383C (en
Inventor
Makoto Ishihara
Kazuhiro Kiminami
Masakazu Wakabayashi
Hirokazu Hori
Saneharu Tatsu
Sachio Takeshita
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.)
Sekisui Chemical Co Ltd
Original Assignee
Individual
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
Priority claimed from JP1083316A external-priority patent/JPH0735078B2/en
Priority claimed from JP1083315A external-priority patent/JPH0829559B2/en
Application filed by Individual filed Critical Individual
Publication of CA2013383A1 publication Critical patent/CA2013383A1/en
Application granted granted Critical
Publication of CA2013383C publication Critical patent/CA2013383C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10559—Shape of the cross-section
    • B32B17/10577—Surface roughness
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10559—Shape of the cross-section
    • B32B17/10577—Surface roughness
    • B32B17/10587—Surface roughness created by embossing
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion 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 extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion 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 extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/272—Cleaning; Purging; Avoiding contamination of dies
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/31—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections
    • B29C48/313—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets being adjustable, i.e. having adjustable exit sections by positioning the die lips
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations

Abstract

ABSTRACT OF THE DISCLOSURE

A method for the manufacture of thermoplastic resin sheets comprising extruding molten thermoplastic resin at an extrusion velocity V through a slit provided in an extrusion mold so as to form thermoplastic resin sheets with embossed surfaces, wherein said thermoplastic resin is extruded from said slit in said extrusion mold under conditions such that the ratio V/H of said extrusion velocity V to the width H of said slit exceeds a critical value (V/H)c, said critical value (V/H)c being the ratio of the extrusion velocity to the width of the mold slit corresponding minimum value of the roughness of the embossment formed on the surface of said thermoplastic resin sheets, whereby defects such as the adhesion to and winding onto rollers, inferior appearance and sizing marks which are prone to occur when the sheets are embossed with embossing rollers.
CA002013383A 1989-03-31 1990-03-29 Method for the manufacture of thermoplastic resin sheets Expired - Fee Related CA2013383C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1-83315 1989-03-31
JP1083316A JPH0735078B2 (en) 1989-03-31 1989-03-31 Method for producing embossed thermoplastic resin sheet
JP1083315A JPH0829559B2 (en) 1989-03-31 1989-03-31 Extrusion mold lip structure
JP1-83316 1989-03-31

Publications (2)

Publication Number Publication Date
CA2013383A1 true CA2013383A1 (en) 1990-09-30
CA2013383C CA2013383C (en) 1994-10-25

Family

ID=26424363

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002013383A Expired - Fee Related CA2013383C (en) 1989-03-31 1990-03-29 Method for the manufacture of thermoplastic resin sheets

Country Status (7)

Country Link
US (1) US5151234A (en)
EP (1) EP0390578B1 (en)
KR (1) KR0133519B1 (en)
AU (1) AU621471B2 (en)
CA (1) CA2013383C (en)
DE (1) DE69009270T2 (en)
MX (1) MX171902B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601778A (en) * 1990-03-30 1997-02-11 Solvay & Cie Process for producing a resin film based on a copolymer of ethylene and vinyl acetate
DE9015187U1 (en) * 1990-11-05 1992-03-05 Roehm Gmbh, 6100 Darmstadt, De
US6077374A (en) * 1993-08-16 2000-06-20 Monsanto Method of preparing prelaminate using rough-surfaced interlayer
DE69826716T2 (en) 1997-12-19 2005-10-06 E.I. Du Pont De Nemours And Co., Wilmington INTERLOCK STRUCTURE FOR COMPOSITE GLASS
US6383425B1 (en) * 1998-09-03 2002-05-07 Bp Corporation North America Inc. Method for extruding foamed polypropylene sheet having improved surface appearance
MXPA02000125A (en) * 1999-07-01 2002-07-30 Sekisui Chemical Co Ltd Interlayer for laminated glass and laminated glass.
DE60105781T3 (en) * 2000-03-29 2010-05-06 E.I. Dupont De Nemours And Co., Wilmington GLASS / POLYVINYLBUTYRAL LAMINATE WITH DIRECTED SURFACE STRUCTURES AND METHOD OF MANUFACTURING THEM
US20060263608A1 (en) * 2002-08-14 2006-11-23 Choi Chul W Glass/polyvinylbutyral laminates having directional surface patterns and a process for preparing same
US20080157426A1 (en) * 2006-12-29 2008-07-03 Kotwis Joseph E Process and apparatus for reducing die drips and for controlling surface roughness during polymer extrusion
US8197928B2 (en) 2006-12-29 2012-06-12 E. I. Du Pont De Nemours And Company Intrusion resistant safety glazings and solar cell modules
WO2009120824A1 (en) * 2008-03-26 2009-10-01 E. I. Du Pont De Nemours And Company High performance anti-spall laminate article
CA2944137A1 (en) * 2014-03-31 2015-10-08 Sekisui Chemical Co., Ltd. Intermediate film for laminated glass, and laminated glass

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876497A (en) * 1955-04-14 1959-03-10 Union Carbide Corp Process of melt extruding plastic film
US2904844A (en) * 1956-02-10 1959-09-22 Du Pont Process for embossing polyvinyl acetal sheets
NL101863C (en) * 1957-02-28 1900-01-01
US2991508A (en) * 1959-09-23 1961-07-11 Du Pont Fabrication of thermoplastic resins
US3382535A (en) * 1965-04-16 1968-05-14 Western Electric Co Minimum length extrusion die
US3415796A (en) * 1966-03-24 1968-12-10 Rohm & Haas Extruded matte finish acrylic film
DE1779235C3 (en) * 1967-08-07 1974-09-26 Reifenhaeuser Kg, 5210 Troisdorf Slot die for screw presses for the production of profiled thermoplastic plastic films
US3574808A (en) * 1968-10-16 1971-04-13 Phillips Petroleum Co Method of forming patterned articles employing differential pressure
US3935359A (en) * 1972-06-23 1976-01-27 Rowland Development Corporation Retroreflective sheeting and method and apparatus for producing same
GB1441586A (en) * 1972-07-12 1976-07-07 Ici Ltd Method for reducing sharkskin on extruded polymeric material
US3994654A (en) * 1975-01-02 1976-11-30 Monsanto Company Die for extruding thermoplastic sheets
JPS5695637A (en) * 1979-12-29 1981-08-03 Matsushita Electric Works Ltd Structure of die for extrusion molding
JPS5812743A (en) * 1981-07-16 1983-01-24 Sumitomo Chem Co Ltd Die for extrusion molding of synthetic resin
US4485062A (en) * 1983-07-05 1984-11-27 E. I. Du Pont De Nemours And Company Process for extruding polymers
JPS60204643A (en) * 1984-03-30 1985-10-16 Sekisui Chem Co Ltd Interlayer for sandwich glass
JPS6161835A (en) * 1984-08-31 1986-03-29 Sekisui Chem Co Ltd Manufacture of embossed thermoplastic resin sheet
US4575540A (en) * 1984-12-21 1986-03-11 Monsanto Company Polyvinyl butyral sheet roughness control
ATE42712T1 (en) * 1984-12-24 1989-05-15 Huels Troisdorf PROCESS FOR THE MANUFACTURE OF FILMS, PARTICULARLY BASED ON POLYVINYL BUTYRAL WITH LOW SURFACE STICKNESS.
US4654179A (en) * 1985-07-02 1987-03-31 Monsanto Company Polyvinyl butyral sheet roughness control
US4808357A (en) * 1987-11-17 1989-02-28 Monsanto Company Process for forming shaped interlayer blanks
US4768939A (en) * 1987-11-17 1988-09-06 Monsanto Company Apparatus for forming shaped interlayer blanks

Also Published As

Publication number Publication date
US5151234A (en) 1992-09-29
MX171902B (en) 1993-11-23
AU5228590A (en) 1990-10-04
DE69009270T2 (en) 1994-09-08
EP0390578A3 (en) 1992-05-20
AU621471B2 (en) 1992-03-12
DE69009270D1 (en) 1994-07-07
CA2013383C (en) 1994-10-25
KR900014118A (en) 1990-10-22
EP0390578B1 (en) 1994-06-01
EP0390578A2 (en) 1990-10-03
KR0133519B1 (en) 1998-04-21

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20010329