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GB1157842A - Apparatus for the manufacture of Plastics Sheets and Tubes - Google Patents

Apparatus for the manufacture of Plastics Sheets and Tubes

Info

Publication number
GB1157842A
GB1157842A GB2529/67A GB252967A GB1157842A GB 1157842 A GB1157842 A GB 1157842A GB 2529/67 A GB2529/67 A GB 2529/67A GB 252967 A GB252967 A GB 252967A GB 1157842 A GB1157842 A GB 1157842A
Authority
GB
United Kingdom
Prior art keywords
die
extrusion
product
plastics
jan
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.)
Expired
Application number
GB2529/67A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB1157842A publication Critical patent/GB1157842A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/35—Extrusion nozzles or dies with rollers
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1,157,842. Extruding foamed plastics materials, STAMICARBON N.V. Jan. 17, 1967 [Jan. 21, 1966], No. 2529/67. Heading B5A. In an extrusion die for use with foamed plastics the die slot 1 is provided with enlarged portions 2 which diverge in the downstream direction and run parallel to one another and to the direction of extrusion. The product, which may be a sheet or tube, is thereby provided with localized surface elevations, Fig. 4 (not shown), but is substantially free from wrinkles. Typical values for the dimensions a, b, c, d and e are given, e.g. 0À25 mm. for e, a general requirement being that foaming should not occur until the plastics has emerged from the die. In a second embodiment, Fig. 5 (not shown), a fluted roller 3 is situated at the die orifice and is rotated by the material or otherwise. A product is formed having surface elevations running transverse to the direction of extrusion. Two rollers may be used to produce a sheet having elevations on both surfaces, and a polygonally cross-sectioned tube may be produced by providing a roller at each side of the polygon. In examples the plastics material is polyethylene or a polyethylene/polystyrene mixture with, as additives, micro crystalline wax and titanium oxide or calcium carbonate. The product may be used for packaging.
GB2529/67A 1966-01-21 1967-01-17 Apparatus for the manufacture of Plastics Sheets and Tubes Expired GB1157842A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6600783A NL6600783A (en) 1966-01-21 1966-01-21

Publications (1)

Publication Number Publication Date
GB1157842A true GB1157842A (en) 1969-07-09

Family

ID=19795515

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2529/67A Expired GB1157842A (en) 1966-01-21 1967-01-17 Apparatus for the manufacture of Plastics Sheets and Tubes

Country Status (7)

Country Link
BE (1) BE692753A (en)
CH (1) CH450699A (en)
DE (1) DE1729047A1 (en)
ES (1) ES335869A1 (en)
FR (1) FR1508696A (en)
GB (1) GB1157842A (en)
NL (1) NL6600783A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890423A1 (en) * 1996-12-26 1999-01-13 Sekisui Chemical Co., Ltd. Foamable thermoplastic sheet-like synthetic resin, thermoplastic foamed resin and their production method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626526B1 (en) * 1988-01-29 1990-04-20 Neiman Sa HARD CORE PART WITH FLEXIBLE COATING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0890423A1 (en) * 1996-12-26 1999-01-13 Sekisui Chemical Co., Ltd. Foamable thermoplastic sheet-like synthetic resin, thermoplastic foamed resin and their production method
EP0890423A4 (en) * 1996-12-26 2002-01-30 Sekisui Chemical Co Ltd Foamable thermoplastic sheet-like synthetic resin, thermoplastic foamed resin and their production method
US7048879B2 (en) 1996-12-26 2006-05-23 Sekisui Chemical Co., Ltd. Sheet-form structure of expandable thermoplastic resin, thermoplastic resin foam and methods for manufacturing thereof

Also Published As

Publication number Publication date
DE1729047A1 (en) 1971-06-03
BE692753A (en) 1967-07-17
NL6600783A (en) 1967-07-24
FR1508696A (en) 1968-01-05
ES335869A1 (en) 1967-12-16
CH450699A (en) 1968-01-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees