FR2331435A1 - Cellular polycarbodiimide article prodn. - by heating cellular polycarbodiimide plate in mould-punch assembly, compressing softened plate, cooling before demoulding - Google Patents

Cellular polycarbodiimide article prodn. - by heating cellular polycarbodiimide plate in mould-punch assembly, compressing softened plate, cooling before demoulding

Info

Publication number
FR2331435A1
FR2331435A1 FR7535563A FR7535563A FR2331435A1 FR 2331435 A1 FR2331435 A1 FR 2331435A1 FR 7535563 A FR7535563 A FR 7535563A FR 7535563 A FR7535563 A FR 7535563A FR 2331435 A1 FR2331435 A1 FR 2331435A1
Authority
FR
France
Prior art keywords
plate
polycarbodiimide
mould
cellular
pref
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
FR7535563A
Other languages
French (fr)
Other versions
FR2331435B1 (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.)
Johnson Controls Roth SAS
Original Assignee
Roth Freres SA
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 Roth Freres SA filed Critical Roth Freres SA
Priority to FR7535563A priority Critical patent/FR2331435A1/en
Priority to GB45430/76A priority patent/GB1527290A/en
Priority to ES453103A priority patent/ES453103A1/en
Priority to IT12884/76A priority patent/IT1069390B/en
Priority to NL7612540.A priority patent/NL166877C/en
Priority to AR265461A priority patent/AR213834A1/en
Priority to MX76100416U priority patent/MX3576E/en
Priority to SE7612711A priority patent/SE416453B/en
Priority to LU76204A priority patent/LU76204A1/xx
Priority to AU19673/76A priority patent/AU503474B2/en
Priority to CA265,824A priority patent/CA1074971A/en
Priority to BR7607635A priority patent/BR7607635A/en
Priority to BE172344A priority patent/BE848330A/en
Priority to DE2652137A priority patent/DE2652137C3/en
Priority to JP51137404A priority patent/JPS5263970A/en
Publication of FR2331435A1 publication Critical patent/FR2331435A1/en
Priority to US05/931,952 priority patent/US4265851A/en
Application granted granted Critical
Publication of FR2331435B1 publication Critical patent/FR2331435B1/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
    • B29C44/02—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
    • B29C44/10—Applying counter-pressure during expanding

Landscapes

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

Abstract

The articles, e.g. wall and ceiling panels, pipe insulating jackets, and similar articles, are moulded by heating a foamed polycarbodiimide plate, by radiation and direct contact, in a mould/punch assembly, and compressing the plate when the foam reaches its softening point. Compression is effected so that the plate is deformed and densified, and its material becomes less brittle, stronger, and more elastic and smooth, while its innate non-flammability is preserved. After moulding, the mould is cooled slightly, e.g. by means of an air jet, so that the moulded prod. is slightly hardened before the punch is withdrawn, and the prod. is demoulded. The process gives non-flammable articles having a smooth solid surface, and goof mechanical strength. The relief of the mould surface is accurately reproduced. The cellular structure of the foam can be controlled, and open-celled foams can be converted into closed-celled foams. A surfactant is pref. added to the base compsn. for the cellular polycarbodiimide, this surfactant pref. consisting of 0.05-0.15 pt. wt. silicone oil per 100 pts. wt. base compsn. The softening point of the foam is pref. Ca. 130 degrees C for a foam density of 16 kg/m3. Simultaneously with compression, the heat is supplied over the surface of the piece to be moulded. The operating temp. of the mould/punch assembly is pref. 175-190 degrees C.
FR7535563A 1975-11-17 1975-11-17 Cellular polycarbodiimide article prodn. - by heating cellular polycarbodiimide plate in mould-punch assembly, compressing softened plate, cooling before demoulding Granted FR2331435A1 (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
FR7535563A FR2331435A1 (en) 1975-11-17 1975-11-17 Cellular polycarbodiimide article prodn. - by heating cellular polycarbodiimide plate in mould-punch assembly, compressing softened plate, cooling before demoulding
GB45430/76A GB1527290A (en) 1975-11-17 1976-11-02 Moulding cellular polycarbodiimide
ES453103A ES453103A1 (en) 1975-11-17 1976-11-06 Process for moulding cellular polycarbodiimide
IT12884/76A IT1069390B (en) 1975-11-17 1976-11-09 FORMATION METHOD OF CELL IMIDE POLYCARBODES AND PRODUCT OBTAINED BY SUCH METHOD
NL7612540.A NL166877C (en) 1975-11-17 1976-11-11 METHOD FOR MODIFYING THE CELL STRUCTURE OF A FORMED CELLULAR POLYCARBODIIMIDE AND FORMED PRODUCTS OBTAINED BY USING THIS PROCESS.
AR265461A AR213834A1 (en) 1975-11-17 1976-11-12 AN ALVEOLAR POLYCARBODIIMIDE MOLDING PROCEDURE
SE7612711A SE416453B (en) 1975-11-17 1976-11-15 PROCEDURE FOR CASTING FOAM CELL POLYCARBODIIMIDE WHICH IS RESPONSIBLE
MX76100416U MX3576E (en) 1975-11-17 1976-11-15 IMPROVED ALVEOLAR POLYCABODIIMIDE MOLDING PROCEDURE
LU76204A LU76204A1 (en) 1975-11-17 1976-11-16
AU19673/76A AU503474B2 (en) 1975-11-17 1976-11-16 Molding polucarbodiimide foam
CA265,824A CA1074971A (en) 1975-11-17 1976-11-16 Cellular compound molding process and product obtained thereby
BR7607635A BR7607635A (en) 1975-11-17 1976-11-16 CELL POLYCARBODIIMIDE MOLDING PROCESS AND PRODUCT OBTAINED BY APPLICATION OF THIS PROCESS
BE172344A BE848330A (en) 1975-11-17 1976-11-16 CELLULAR POLYCARBODIIMIDE MOLDING PROCESS, AND PRODUCT OBTAINED BY APPLICATION OF THIS PROCESS
DE2652137A DE2652137C3 (en) 1975-11-17 1976-11-16 Process for molding cellular polycarbodiimide
JP51137404A JPS5263970A (en) 1975-11-17 1976-11-17 Moulding of spongy polycarbodiimide and products obtained from this method
US05/931,952 US4265851A (en) 1975-11-17 1978-08-08 Process for moulding cellular polycarbodiimide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7535563A FR2331435A1 (en) 1975-11-17 1975-11-17 Cellular polycarbodiimide article prodn. - by heating cellular polycarbodiimide plate in mould-punch assembly, compressing softened plate, cooling before demoulding

Publications (2)

Publication Number Publication Date
FR2331435A1 true FR2331435A1 (en) 1977-06-10
FR2331435B1 FR2331435B1 (en) 1980-01-11

Family

ID=9162692

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7535563A Granted FR2331435A1 (en) 1975-11-17 1975-11-17 Cellular polycarbodiimide article prodn. - by heating cellular polycarbodiimide plate in mould-punch assembly, compressing softened plate, cooling before demoulding

Country Status (2)

Country Link
BE (1) BE848330A (en)
FR (1) FR2331435A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148035A1 (en) * 1971-08-05 1973-03-11 Basf Wyandotte Corp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148035A1 (en) * 1971-08-05 1973-03-11 Basf Wyandotte Corp

Also Published As

Publication number Publication date
FR2331435B1 (en) 1980-01-11
BE848330A (en) 1977-03-16

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Legal Events

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