JPS57148631A - Forming method by foamed resin sheet - Google Patents
Forming method by foamed resin sheetInfo
- Publication number
- JPS57148631A JPS57148631A JP56034893A JP3489381A JPS57148631A JP S57148631 A JPS57148631 A JP S57148631A JP 56034893 A JP56034893 A JP 56034893A JP 3489381 A JP3489381 A JP 3489381A JP S57148631 A JPS57148631 A JP S57148631A
- Authority
- JP
- Japan
- Prior art keywords
- residual strain
- sheet
- male mold
- shape
- piece
- 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
- 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
- B29C44/56—After-treatment of articles, e.g. for altering the shape
Landscapes
- Molding Of Porous Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (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 formed article of excellent strength by a simple forming apparatus and at low cost, by contacting only a male mold to the face where residual strain is stronger than another face concerning the cut piece of a foamed resin sheet having the difference of residual strain on its surface and back and forming the bent shape by heating. CONSTITUTION:The sheet piece A cut beforehand in the approximate shape from the foamed thermoplastic sheet-having different residual strain on its surface and back is fed to the carrying conveyer 2 one by one by the feeding plate 11 from the blank sheet holder 10. The mold carrying conveyer 4 provided in series with male molds 40 corresponding to the inside shape of the formed article is driven, being synchronized with the conveyer 2 and runs through the heating oven 3, making the male mold 40 to contact the sheet piece A having the stronger residual strain on the upper face. The sheet piece A is bent and deformed to accord with the outer shape of the male mold 40, the formed product A' is finished, being parted from the male mold after cooling. The buckling of the edge part of the formed product does not occur, the strength is improved and the appearance becomes good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56034893A JPS57148631A (en) | 1981-03-10 | 1981-03-10 | Forming method by foamed resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56034893A JPS57148631A (en) | 1981-03-10 | 1981-03-10 | Forming method by foamed resin sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57148631A true JPS57148631A (en) | 1982-09-14 |
| JPS6245813B2 JPS6245813B2 (en) | 1987-09-29 |
Family
ID=12426838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56034893A Granted JPS57148631A (en) | 1981-03-10 | 1981-03-10 | Forming method by foamed resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57148631A (en) |
-
1981
- 1981-03-10 JP JP56034893A patent/JPS57148631A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6245813B2 (en) | 1987-09-29 |
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