JPS5747631A - Production of chip foil made of plastic - Google Patents
Production of chip foil made of plasticInfo
- Publication number
- JPS5747631A JPS5747631A JP55122331A JP12233180A JPS5747631A JP S5747631 A JPS5747631 A JP S5747631A JP 55122331 A JP55122331 A JP 55122331A JP 12233180 A JP12233180 A JP 12233180A JP S5747631 A JPS5747631 A JP S5747631A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- chip
- density
- thickness
- tubular film
- 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
Landscapes
- Laminated Bodies (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To obtain a chip foil excellent in firmness, folding endurance and tear strength by a method wherein a biaxially stretched two-layer tubular film consisting of an inner layer of polystyrene (PS) and an outer layer of high-density polyethylene (PE) is folded flat, then the inner PS layers are press adhered to each other and the resultant material is cut to predetermined length.
CONSTITUTION: By a two-layer inflation molding method, the PS for forming the inner layer and the high-density PE for forming the outer layer are coextruded, for example, by an in-die contact coextrusion method at a temperature of 180W220°C and is inflated at a blow-up ratio of 3.0W6.0 to obtan the biaxially stretched two-layer tubular film having a total film thicknes of, for example, 40W150μ and consisting of the inner PS layer of a thickness of 70W90% of the total film thickness and the outer high-density PE layer of a thickness of 30W10% of the total film thickness. Then, the tubular film is folded flat, the inner layers are press adhered to ech other by embossing and the resultant material is cut to the predetermined length to obtan the chip foils. In this case, when projecting streaks and recessed grooves are formed alternately in the circumferential direction, the rigidity of the chip foil can be further enhanced. The PS provides the firmness for the chip foil, while the high-density PE provides tensile strength, tear strength, chemical resistance, oil resistance and the like.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55122331A JPS5747631A (en) | 1980-09-05 | 1980-09-05 | Production of chip foil made of plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55122331A JPS5747631A (en) | 1980-09-05 | 1980-09-05 | Production of chip foil made of plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5747631A true JPS5747631A (en) | 1982-03-18 |
| JPS6111189B2 JPS6111189B2 (en) | 1986-04-01 |
Family
ID=14833317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55122331A Granted JPS5747631A (en) | 1980-09-05 | 1980-09-05 | Production of chip foil made of plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5747631A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793198A (en) * | 2021-04-09 | 2021-05-14 | 山东国维复合材料科技有限公司 | Film forming method and system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6165594U (en) * | 1984-09-28 | 1986-05-06 | ||
| JPH0248996U (en) * | 1988-09-30 | 1990-04-05 |
-
1980
- 1980-09-05 JP JP55122331A patent/JPS5747631A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112793198A (en) * | 2021-04-09 | 2021-05-14 | 山东国维复合材料科技有限公司 | Film forming method and system |
| CN112793198B (en) * | 2021-04-09 | 2021-07-02 | 山东国维复合材料科技有限公司 | Film forming method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6111189B2 (en) | 1986-04-01 |
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