JPS57102307A - Production of perforated container made of synthetic resin - Google Patents
Production of perforated container made of synthetic resinInfo
- Publication number
- JPS57102307A JPS57102307A JP17771380A JP17771380A JPS57102307A JP S57102307 A JPS57102307 A JP S57102307A JP 17771380 A JP17771380 A JP 17771380A JP 17771380 A JP17771380 A JP 17771380A JP S57102307 A JPS57102307 A JP S57102307A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- sheet
- softened
- minute
- stretchable thin
- 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
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
PURPOSE: To obtain the titled container advantageously on an industrial basis without requiring two steps of forming and perforation, by a method wherein a synthetic resin sheet provided with a plurality of minute throug-holes is softened by heating with a stretchable thin sheet on the surface thereof, followed by vacuum and/or pressure forming.
CONSTITUTION: The sheet of a thermoplastic resin such as PVC, PE, PP or the like is provided with the minute through-holes by using a roll fitted with needles, by a high- voltage electric discharge method or by other method. With the stretchable thin sheet provided on one or both sides of the resin sheet, the resin sheet is softened by heating and then it is subjected to the vacuum and/or pressure forming. The stretchable thin sheet is preferably such one as to be softened at the softening temperature of the resin sheet and be easily released after forming. Thus, a silion film is preferably used as the stretchable thin sheet. Accordingly, unlike conventional methods, there is no need to combine the two steps, namely, a step of forming and a step of perforating a formed article, and the size of the minute holes formed in the walls of the formed article can be easily changed. The perforated container thus obtained is suitably used for maintaining the freshness of contents such as fresh food and the like.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17771380A JPS57102307A (en) | 1980-12-16 | 1980-12-16 | Production of perforated container made of synthetic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17771380A JPS57102307A (en) | 1980-12-16 | 1980-12-16 | Production of perforated container made of synthetic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57102307A true JPS57102307A (en) | 1982-06-25 |
Family
ID=16035802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17771380A Pending JPS57102307A (en) | 1980-12-16 | 1980-12-16 | Production of perforated container made of synthetic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57102307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0245124A (en) * | 1988-08-04 | 1990-02-15 | Tokai Rubber Ind Ltd | Manufacture of water-permeable sheet with patterns |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931759A (en) * | 1972-07-20 | 1974-03-22 |
-
1980
- 1980-12-16 JP JP17771380A patent/JPS57102307A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4931759A (en) * | 1972-07-20 | 1974-03-22 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0245124A (en) * | 1988-08-04 | 1990-02-15 | Tokai Rubber Ind Ltd | Manufacture of water-permeable sheet with patterns |
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