JPS5640528A - Foamed polystylene sheet and manufacture thereof - Google Patents
Foamed polystylene sheet and manufacture thereofInfo
- Publication number
- JPS5640528A JPS5640528A JP11575879A JP11575879A JPS5640528A JP S5640528 A JPS5640528 A JP S5640528A JP 11575879 A JP11575879 A JP 11575879A JP 11575879 A JP11575879 A JP 11575879A JP S5640528 A JPS5640528 A JP S5640528A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- die
- cylinder
- polystylene
- foamed
- 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
- B29C44/507—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 extruding the compound through an annular die
-
- 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
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE:To obtain the foamed polystylene sheet having a thin thickness, a high structural strength which is useful for a food packaging unit by a method wherein a polymer and an organic compound having a low boiling point are extruded from an annular slit to form a cylindrical body, a diameter of the cylindrical film is expanded with a specified method, nonfoamed layer is formed and then cut. CONSTITUTION:(B) 0.01-0.15mol of organic compound of low boiling point (Ex: butane etc.) is added in respect to (A) 100g of polystylene, they are melted and mixed in the extruding machine, then extruded from the annular slit 2 of the die 1 arranged at the leading end of the extruding machine to make a cylinder 7 and then foamed. Then, this is fixed just after the annular slit 2 so as not to be contacted with the die 1, thermal medium is passed through a circulation passage 4, contacted with a cooling ring 3 heated to -10 deg.C-+90 deg.C with a moving speed of 1- 50m/min, and air is blown into a cavity 8 enclosed by the die 1, the cooling drum 6 and the cylinder 7 from an air blow pipe 5, a diameter of the cylinder 7 is bulged out to form nonfoamed layer having a thickness of 2-10% thereof in an intire surface of the sheet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11575879A JPS5640528A (en) | 1979-09-11 | 1979-09-11 | Foamed polystylene sheet and manufacture thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11575879A JPS5640528A (en) | 1979-09-11 | 1979-09-11 | Foamed polystylene sheet and manufacture thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5640528A true JPS5640528A (en) | 1981-04-16 |
Family
ID=14670316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11575879A Pending JPS5640528A (en) | 1979-09-11 | 1979-09-11 | Foamed polystylene sheet and manufacture thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5640528A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5867422A (en) * | 1981-10-19 | 1983-04-22 | Sekisui Plastics Co Ltd | Extrusion expanding polystyrene resin sheet |
JPS58101026A (en) * | 1981-12-12 | 1983-06-16 | Sekisui Plastics Co Ltd | Continuous manufacture of polystyrene foamed and molded item |
JPS58196239A (en) * | 1982-05-11 | 1983-11-15 | Sekisui Plastics Co Ltd | Polystyrene foam sheet suitable for use in fabrication |
JPS6337916A (en) * | 1986-08-04 | 1988-02-18 | Dow Kako Kk | Manufacture of styrene-based resin foam |
JPS63122515A (en) * | 1986-11-11 | 1988-05-26 | Sekisui Plastics Co Ltd | Manufacture of styrene resin foamed sheet |
JPH03157432A (en) * | 1989-11-15 | 1991-07-05 | Sekisui Plastics Co Ltd | Production of heat-resistant foam |
JPH0542977B2 (en) * | 1987-06-16 | 1993-06-30 | Kanegafuchi Chemical Ind | |
CN111511521A (en) * | 2018-12-27 | 2020-08-07 | 株式会社Huvis | Cooling device for polyethylene glycol terephthalate foaming sheet |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5022874A (en) * | 1973-06-04 | 1975-03-11 | ||
JPS5280362A (en) * | 1975-12-27 | 1977-07-06 | Mitsui Toatsu Chemicals | Cooling ring for manufacture of foam sheet |
-
1979
- 1979-09-11 JP JP11575879A patent/JPS5640528A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5022874A (en) * | 1973-06-04 | 1975-03-11 | ||
JPS5280362A (en) * | 1975-12-27 | 1977-07-06 | Mitsui Toatsu Chemicals | Cooling ring for manufacture of foam sheet |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5867422A (en) * | 1981-10-19 | 1983-04-22 | Sekisui Plastics Co Ltd | Extrusion expanding polystyrene resin sheet |
JPS6132129B2 (en) * | 1981-10-19 | 1986-07-24 | Sekisui Plastics | |
JPS58101026A (en) * | 1981-12-12 | 1983-06-16 | Sekisui Plastics Co Ltd | Continuous manufacture of polystyrene foamed and molded item |
JPH0160407B2 (en) * | 1981-12-12 | 1989-12-22 | Sekisui Plastics | |
JPS58196239A (en) * | 1982-05-11 | 1983-11-15 | Sekisui Plastics Co Ltd | Polystyrene foam sheet suitable for use in fabrication |
JPS6338060B2 (en) * | 1982-05-11 | 1988-07-28 | Sekisui Plastics | |
JPS6337916A (en) * | 1986-08-04 | 1988-02-18 | Dow Kako Kk | Manufacture of styrene-based resin foam |
JPS63122515A (en) * | 1986-11-11 | 1988-05-26 | Sekisui Plastics Co Ltd | Manufacture of styrene resin foamed sheet |
JPH0542977B2 (en) * | 1987-06-16 | 1993-06-30 | Kanegafuchi Chemical Ind | |
JPH03157432A (en) * | 1989-11-15 | 1991-07-05 | Sekisui Plastics Co Ltd | Production of heat-resistant foam |
JPH0581612B2 (en) * | 1989-11-15 | 1993-11-15 | Sekisui Plastics | |
CN111511521A (en) * | 2018-12-27 | 2020-08-07 | 株式会社Huvis | Cooling device for polyethylene glycol terephthalate foaming sheet |
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