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 espansoInfo
- 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
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
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 (it) |
DE (1) | DE2318794A1 (it) |
IT (1) | IT983890B (it) |
Families Citing this family (4)
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 |
-
1973
- 1973-04-13 DE DE19732318794 patent/DE2318794A1/de active Pending
- 1973-04-13 IT IT2302273A patent/IT983890B/it active
- 1973-04-13 JP JP4144573A patent/JPS4918960A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2318794A1 (de) | 1973-11-15 |
JPS4918960A (it) | 1974-02-19 |
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