JPS5730735A - Production of foamed moldings of vinyl chloride resin - Google Patents
Production of foamed moldings of vinyl chloride resinInfo
- Publication number
- JPS5730735A JPS5730735A JP10398780A JP10398780A JPS5730735A JP S5730735 A JPS5730735 A JP S5730735A JP 10398780 A JP10398780 A JP 10398780A JP 10398780 A JP10398780 A JP 10398780A JP S5730735 A JPS5730735 A JP S5730735A
- Authority
- JP
- Japan
- Prior art keywords
- foaming agent
- resin
- foamed
- vinyl chloride
- extruder
- 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.)
- Pending
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
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
Abstract
PURPOSE:A composition comprising a vinyl chloride resin, a thermal decomposition type foaming agent and an acrylic resin is, after an organic foaming agent is forced into it in the extruder, extruded, foamed and molded to produce moldings that can give foamed products of uniformly fine cellular structure. CONSTITUTION:A resin composition comprising 100pts.wt. of a vinyl chloride resin, preferably a copolymer with vinyl acetate, 0.01-10pts. of a thermal decomposition type foaming agent for increasing cell uniformly, cell fineness and foaming degree such as azodicarboxylic acid amide and 0.5-30pts. of an acrylic resin for accelerating resin gelation and holding foamed gas, preferably methyl methacrylate polymer is fed to an extruder. Then 1-30pts. of an organic solvent foaming agent boiling at lower than 90 deg.C such as propane is forced into the half to completely gelling resin compositon and they are extruded, foamed and molded. After the foaming agent is forced into the extruder, the temperature is preferably lowered to a temperature that is more than 30 deg.C higher the softening point of the compositon and lower than the apparent gelation temperature and molding is conducted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10398780A JPS5730735A (en) | 1980-07-29 | 1980-07-29 | Production of foamed moldings of vinyl chloride resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10398780A JPS5730735A (en) | 1980-07-29 | 1980-07-29 | Production of foamed moldings of vinyl chloride resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5730735A true JPS5730735A (en) | 1982-02-19 |
Family
ID=14368652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10398780A Pending JPS5730735A (en) | 1980-07-29 | 1980-07-29 | Production of foamed moldings of vinyl chloride resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5730735A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192458A (en) * | 1986-09-11 | 1994-07-12 | Kanegafuchi Chem Ind Co Ltd | Foamed flexible vinyl chloride molding of small compression set |
| WO1999043741A1 (en) * | 1998-02-24 | 1999-09-02 | Mitsubishi Rayon Co., Ltd. | Processing aid for foam molding and vinyl chloride resin composition containing the same |
| JPWO2010061630A1 (en) * | 2008-11-28 | 2012-04-26 | 三菱レイヨン株式会社 | Processing aid for foam molding, vinyl chloride resin composition for foam molding and foam molding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55149328A (en) * | 1979-05-11 | 1980-11-20 | Shin Etsu Chem Co Ltd | Preparation of foamed vinyl chloride resin molded article |
-
1980
- 1980-07-29 JP JP10398780A patent/JPS5730735A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55149328A (en) * | 1979-05-11 | 1980-11-20 | Shin Etsu Chem Co Ltd | Preparation of foamed vinyl chloride resin molded article |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192458A (en) * | 1986-09-11 | 1994-07-12 | Kanegafuchi Chem Ind Co Ltd | Foamed flexible vinyl chloride molding of small compression set |
| WO1999043741A1 (en) * | 1998-02-24 | 1999-09-02 | Mitsubishi Rayon Co., Ltd. | Processing aid for foam molding and vinyl chloride resin composition containing the same |
| US6391976B1 (en) * | 1998-02-24 | 2002-05-21 | Mitsubishi Rayon Co., Ltd. | Processing aid for foam molding use and vinyl chloride resin composition containing the same |
| CN1131268C (en) * | 1998-02-24 | 2003-12-17 | 三菱丽阳株式会社 | Processing aid for foam mdding and vinyl chloride resin compsn. containing same |
| JPWO2010061630A1 (en) * | 2008-11-28 | 2012-04-26 | 三菱レイヨン株式会社 | Processing aid for foam molding, vinyl chloride resin composition for foam molding and foam molding |
| JP5636673B2 (en) * | 2008-11-28 | 2014-12-10 | 三菱レイヨン株式会社 | Vinyl chloride resin composition for foam molding and foam molded article |
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