DE2317944C2 - - Google Patents

Info

Publication number
DE2317944C2
DE2317944C2 DE2317944A DE2317944A DE2317944C2 DE 2317944 C2 DE2317944 C2 DE 2317944C2 DE 2317944 A DE2317944 A DE 2317944A DE 2317944 A DE2317944 A DE 2317944A DE 2317944 C2 DE2317944 C2 DE 2317944C2
Authority
DE
Germany
Prior art keywords
mixture
gas
water
substance
plastic material
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
DE2317944A
Other languages
German (de)
English (en)
Other versions
DE2317944A1 (enrdf_load_stackoverflow
DE2317944B1 (de
Inventor
Gareth Ware Jay
Edward Hitchin Hertfordshire Wardman (Grossbritannien)
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.)
BRITISH VISQUEEN Ltd LONDON
Original Assignee
BRITISH VISQUEEN Ltd LONDON
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 GB1648872A external-priority patent/GB1427006A/en
Priority claimed from GB1639872*[A external-priority patent/GB1399102A/en
Application filed by BRITISH VISQUEEN Ltd LONDON filed Critical BRITISH VISQUEEN Ltd LONDON
Publication of DE2317944A1 publication Critical patent/DE2317944A1/de
Publication of DE2317944B1 publication Critical patent/DE2317944B1/de
Priority to JP3572674A priority Critical patent/JPS5035219A/ja
Application granted granted Critical
Publication of DE2317944C2 publication Critical patent/DE2317944C2/de
Granted legal-status Critical Current

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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/125Water, e.g. hydrated salts
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)
DE19732317944 1972-04-10 1973-04-05 Herstellung von kunststoffschaeumen Granted DE2317944B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3572674A JPS5035219A (enrdf_load_stackoverflow) 1973-04-05 1974-04-01

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1648872A GB1427006A (en) 1972-04-10 1972-04-10 Foamed polyolefine materials
GB1639872*[A GB1399102A (en) 1971-08-27 1972-04-10 Plastics laminate

Publications (3)

Publication Number Publication Date
DE2317944A1 DE2317944A1 (enrdf_load_stackoverflow) 1973-11-15
DE2317944B1 DE2317944B1 (de) 1973-11-15
DE2317944C2 true DE2317944C2 (enrdf_load_stackoverflow) 1974-06-20

Family

ID=26252019

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732317944 Granted DE2317944B1 (de) 1972-04-10 1973-04-05 Herstellung von kunststoffschaeumen

Country Status (2)

Country Link
JP (1) JPS5222385B2 (enrdf_load_stackoverflow)
DE (1) DE2317944B1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5492234A (en) * 1977-12-28 1979-07-21 Canon Inc Reflection type screen
JPS59131902A (ja) * 1983-10-21 1984-07-28 Canon Inc スペツクル拡散板作成方法

Also Published As

Publication number Publication date
DE2317944A1 (enrdf_load_stackoverflow) 1973-11-15
JPS5222385B2 (enrdf_load_stackoverflow) 1977-06-17
DE2317944B1 (de) 1973-11-15
JPS4910265A (enrdf_load_stackoverflow) 1974-01-29

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Legal Events

Date Code Title Description
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee