FR2008528A1 - Making articles of complex shape, by forming dense - thermoplastic foam inside a mould - Google Patents

Making articles of complex shape, by forming dense - thermoplastic foam inside a mould

Info

Publication number
FR2008528A1
FR2008528A1 FR6909042A FR6909042A FR2008528A1 FR 2008528 A1 FR2008528 A1 FR 2008528A1 FR 6909042 A FR6909042 A FR 6909042A FR 6909042 A FR6909042 A FR 6909042A FR 2008528 A1 FR2008528 A1 FR 2008528A1
Authority
FR
France
Prior art keywords
mould
complex shape
thermoplastic foam
making articles
foam inside
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.)
Withdrawn
Application number
FR6909042A
Other languages
French (fr)
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 FR2008528A1 publication Critical patent/FR2008528A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/12—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 by a physical blowing agent
    • 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
    • B29C44/3415—Heating or cooling
    • 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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material

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)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Into a mould, which may be of complex shape, having high strength and good thermal conductivity, at least 60% (pref. 80%) of its volume of a polyol-i socyanate mixture, with catalyst and additives, e.g. glass fibre, pigments, fillers, and 25% w/w of blowing agent, is introduced; after allowing trapped air to escape, the mould is immediately closed, the reaction allowed to proceed so that the foam formed fills the mould completely, the pressure reached being 3.5-10.4 kg/cm2. Spacers/inserted tubes are not distorted. Then the mould and contents are heated to 65-80 C. for 30 min., removal of article from mould is aided by release agents. The foamed composition should have a density of at least 80% of that of the initial reactant mixture. Advantages are ability to make complex articles, avoidance of distortion of spacer inert and inexpensive and relatively low pressure equipment.
FR6909042A 1968-05-15 1969-03-28 Making articles of complex shape, by forming dense - thermoplastic foam inside a mould Withdrawn FR2008528A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34567868A 1968-05-15 1968-05-15

Publications (1)

Publication Number Publication Date
FR2008528A1 true FR2008528A1 (en) 1970-01-23

Family

ID=23356024

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6909042A Withdrawn FR2008528A1 (en) 1968-05-15 1969-03-28 Making articles of complex shape, by forming dense - thermoplastic foam inside a mould

Country Status (1)

Country Link
FR (1) FR2008528A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645386A1 (en) * 2004-10-06 2006-04-12 Quadrant Plastic Composites AG Method for producing lightweight structural components

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645386A1 (en) * 2004-10-06 2006-04-12 Quadrant Plastic Composites AG Method for producing lightweight structural components

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Legal Events

Date Code Title Description
ST Notification of lapse