IT983890B - Processo di stampaggio per pezzi alveolari in particolare di poliu retano espanso - Google Patents

Processo di stampaggio per pezzi alveolari in particolare di poliu retano espanso

Info

Publication number
IT983890B
IT983890B IT2302273A IT2302273A IT983890B IT 983890 B IT983890 B IT 983890B IT 2302273 A IT2302273 A IT 2302273A IT 2302273 A IT2302273 A IT 2302273A IT 983890 B IT983890 B IT 983890B
Authority
IT
Italy
Prior art keywords
polyu
alveolar
pieces
molding process
expanded net
Prior art date
Application number
IT2302273A
Other languages
English (en)
Italian (it)
Original Assignee
Renault
Peugeot
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 FR7213205A external-priority patent/FR2179630A1/fr
Priority claimed from FR7311769A external-priority patent/FR2223169A2/fr
Application filed by Renault, Peugeot filed Critical Renault
Application granted granted Critical
Publication of IT983890B publication Critical patent/IT983890B/it

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
    • B29C44/3484—Stopping the foaming reaction until the material is heated or re-heated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • B29B7/7615—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components
    • 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
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
IT2302273A 1972-04-14 1973-04-13 Processo di stampaggio per pezzi alveolari in particolare di poliu retano espanso IT983890B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7213205A FR2179630A1 (en) 1972-04-14 1972-04-14 Foam moulding - using cooled mixture with increased catalyst
FR7311769A FR2223169A2 (en) 1973-04-02 1973-04-02 Foam moulding - using cooled mixture with increased catalyst

Publications (1)

Publication Number Publication Date
IT983890B true IT983890B (it) 1974-11-11

Family

ID=26217023

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2302273A IT983890B (it) 1972-04-14 1973-04-13 Processo di stampaggio per pezzi alveolari in particolare di poliu retano espanso

Country Status (3)

Country Link
JP (1) JPS4918960A (Direct)
DE (1) DE2318794A1 (Direct)
IT (1) IT983890B (Direct)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5633289A (en) * 1993-03-16 1997-05-27 Toyoda Gosei Co., Ltd. Process for molding an integral skin foam and a polyurethane material for molding the same
DE4327832A1 (de) * 1993-08-19 1995-02-23 Licentia Gmbh Schäumeinrichtung mit einer Stützform
DE4424158C2 (de) * 1994-07-08 1996-06-05 Greiz Plasttechnik Stützform zum Schäumen von Gehäusen, insbesondere von Kühl- und Gefrierschrankgehäusen
DE102008035947B4 (de) * 2008-07-31 2015-03-26 Kraussmaffei Technologies Gmbh Verfahren zur Herstellung eines Produktes aus reaktiven Ausgangsstoffen

Also Published As

Publication number Publication date
DE2318794A1 (de) 1973-11-15
JPS4918960A (Direct) 1974-02-19

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