FR2166222A1 - Foamed moulding with smooth skin - by using permeable lining in mould - Google Patents

Foamed moulding with smooth skin - by using permeable lining in mould

Info

Publication number
FR2166222A1
FR2166222A1 FR7247111A FR7247111A FR2166222A1 FR 2166222 A1 FR2166222 A1 FR 2166222A1 FR 7247111 A FR7247111 A FR 7247111A FR 7247111 A FR7247111 A FR 7247111A FR 2166222 A1 FR2166222 A1 FR 2166222A1
Authority
FR
France
Prior art keywords
mould
moulding
smooth skin
permeable lining
foamed moulding
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
FR7247111A
Other languages
French (fr)
Other versions
FR2166222B1 (en
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2166222A1 publication Critical patent/FR2166222A1/en
Application granted granted Critical
Publication of FR2166222B1 publication Critical patent/FR2166222B1/fr
Granted 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
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/68—Release sheets
    • 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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0415—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by regulating the pressure of the material during or after filling of the mould, e.g. by local venting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Moulding a foamed article by first lining a mould with a gas-permeable membrane prior to introducing a foamable thermoplastic compsn. contg. a chemical blow agent. Upon heating, the gas emitted by the blowing agent causes of the moulding to conform to the shape of the mould and escapes through the membrane to produce a smooth skin on the moulding surface.
FR7247111A 1971-12-27 1972-12-21 Foamed moulding with smooth skin - by using permeable lining in mould Granted FR2166222A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21265371A 1971-12-27 1971-12-27

Publications (2)

Publication Number Publication Date
FR2166222A1 true FR2166222A1 (en) 1973-08-10
FR2166222B1 FR2166222B1 (en) 1976-01-30

Family

ID=22791928

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7247111A Granted FR2166222A1 (en) 1971-12-27 1972-12-21 Foamed moulding with smooth skin - by using permeable lining in mould

Country Status (2)

Country Link
JP (1) JPS4876961A (en)
FR (1) FR2166222A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012025094A1 (en) * 2010-08-13 2012-03-01 Otto Wiesmayer Sealing shell and use thereof, device and method for producing foam-molded parts
EP2647479A1 (en) * 2012-04-04 2013-10-09 Plastiques du Val de Loire Method for injection moulding of a foam plastic material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1450652A (en) * 1965-07-01 1966-06-24 Metaux Et Plastiques De La Neu Process for developing synthetic resins in foam and mold for its implementation
FR1468203A (en) * 1965-02-16 1967-02-03 Kay Mfg Corp Molding apparatus and method
FR1489315A (en) * 1965-08-18 1967-07-21 Dow Chemical Co Method and apparatus for molding cellular plastic articles
CH462452A (en) * 1965-10-12 1968-09-15 Freudenberg Carl Fa Process for the production of foam moldings from polyurethanes
CH495207A (en) * 1969-10-09 1970-08-31 Lonza Ag Foamed plastic panels for insulating contain- - ers of low-boiling liquids

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1468203A (en) * 1965-02-16 1967-02-03 Kay Mfg Corp Molding apparatus and method
FR1450652A (en) * 1965-07-01 1966-06-24 Metaux Et Plastiques De La Neu Process for developing synthetic resins in foam and mold for its implementation
FR1489315A (en) * 1965-08-18 1967-07-21 Dow Chemical Co Method and apparatus for molding cellular plastic articles
CH462452A (en) * 1965-10-12 1968-09-15 Freudenberg Carl Fa Process for the production of foam moldings from polyurethanes
CH495207A (en) * 1969-10-09 1970-08-31 Lonza Ag Foamed plastic panels for insulating contain- - ers of low-boiling liquids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012025094A1 (en) * 2010-08-13 2012-03-01 Otto Wiesmayer Sealing shell and use thereof, device and method for producing foam-molded parts
US9308675B2 (en) 2010-08-13 2016-04-12 Otto Wiesmayer Sealing shell and use thereof, device and method for producing foam-molded parts
EP2647479A1 (en) * 2012-04-04 2013-10-09 Plastiques du Val de Loire Method for injection moulding of a foam plastic material
FR2989019A1 (en) * 2012-04-04 2013-10-11 Plastiques Du Val De Loire INJECTION MOLDING PROCESS OF PLASTIC FOAM MATERIAL

Also Published As

Publication number Publication date
FR2166222B1 (en) 1976-01-30
JPS4876961A (en) 1973-10-16

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Legal Events

Date Code Title Description
ST Notification of lapse