JPS57159621A - Manufacture of biaxially stretched transparent polystyrene resin sheet - Google Patents
Manufacture of biaxially stretched transparent polystyrene resin sheetInfo
- Publication number
- JPS57159621A JPS57159621A JP56045724A JP4572481A JPS57159621A JP S57159621 A JPS57159621 A JP S57159621A JP 56045724 A JP56045724 A JP 56045724A JP 4572481 A JP4572481 A JP 4572481A JP S57159621 A JPS57159621 A JP S57159621A
- Authority
- JP
- Japan
- Prior art keywords
- component
- sheet
- manufacture
- resin sheet
- biaxially stretched
- 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
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE:To obtain the titled sheet having improved physical properties and large in strength by mixing styrene butadiene block copolymer (SB) containing a large quantity of styrene (St) component and polyisoprene or SB containing a small quantity of St component. CONSTITUTION:When SB containing St component of 60-90wt% (A) and SB containing polyisoprene or St component of 50% or less (B) are mixed, resin composition wherein the weight ratio of component A to component B ranges from 1-10 and the content of the component B to the whole components of the sheet ranges 1-5% is extruded from an extruder and stretched biaxially by the inflation process, th tenter process, etc. up to the stretching magnification 1.8 times or more to obtain the desired sheet. When the longitudinal and lateral elongation percentage are represented respectively by alpha and beta the stretching magnification may be shown by the geometrical average value (alphaXbeta)<1/2>.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56045724A JPS57159621A (en) | 1981-03-28 | 1981-03-28 | Manufacture of biaxially stretched transparent polystyrene resin sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56045724A JPS57159621A (en) | 1981-03-28 | 1981-03-28 | Manufacture of biaxially stretched transparent polystyrene resin sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57159621A true JPS57159621A (en) | 1982-10-01 |
JPS6215331B2 JPS6215331B2 (en) | 1987-04-07 |
Family
ID=12727276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56045724A Granted JPS57159621A (en) | 1981-03-28 | 1981-03-28 | Manufacture of biaxially stretched transparent polystyrene resin sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57159621A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS528080A (en) * | 1975-07-09 | 1977-01-21 | Asahi Dow Ltd | Method of manufacturing stylene system resin sheet |
JPS5360950A (en) * | 1976-11-12 | 1978-05-31 | Asahi Chem Ind Co Ltd | Polymer compositions |
-
1981
- 1981-03-28 JP JP56045724A patent/JPS57159621A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS528080A (en) * | 1975-07-09 | 1977-01-21 | Asahi Dow Ltd | Method of manufacturing stylene system resin sheet |
JPS5360950A (en) * | 1976-11-12 | 1978-05-31 | Asahi Chem Ind Co Ltd | Polymer compositions |
Also Published As
Publication number | Publication date |
---|---|
JPS6215331B2 (en) | 1987-04-07 |
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