JPS649719A - Thermoforming method - Google Patents
Thermoforming methodInfo
- Publication number
- JPS649719A JPS649719A JP16469587A JP16469587A JPS649719A JP S649719 A JPS649719 A JP S649719A JP 16469587 A JP16469587 A JP 16469587A JP 16469587 A JP16469587 A JP 16469587A JP S649719 A JPS649719 A JP S649719A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- plastic sheet
- sheet
- recessed section
- jet
- 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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
- B29C51/06—Combined thermoforming and prestretching, e.g. biaxial stretching using pressure difference for prestretching
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To manufacture a balanced molded part in excellent thickness by previously forming a heated sheet to a shape approximating to a recessed section in a mold by a specific air injection nozzle before the sheet is vacuum- molded. CONSTITUTION:Air is injected from a jet 5 for a plug 1. Blast air pressure from the jet 5 for the plug 1 is increased, and a plastic sheet 2 is spread. Blast air pressure is increased, and the plastic sheet 2 is introduced into a recessed section in a mold 3, and formed to a shape approximating to the recessed section in the mold 3. Air in the mold 3 is discharged, And a molded part in uniform film thickness is acquired through vacuum molding. The plastic sheet is to some extent completed before vacuum molding, and brought into contact with the mold, thus preventing a partial contact with the mold 3 of the plastic sheet before molding and the cooling of the plastic sheet and the formation of a thick section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16469587A JPS649719A (en) | 1987-07-01 | 1987-07-01 | Thermoforming method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16469587A JPS649719A (en) | 1987-07-01 | 1987-07-01 | Thermoforming method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS649719A true JPS649719A (en) | 1989-01-13 |
JPH0544901B2 JPH0544901B2 (en) | 1993-07-07 |
Family
ID=15798111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16469587A Granted JPS649719A (en) | 1987-07-01 | 1987-07-01 | Thermoforming method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS649719A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01317739A (en) * | 1988-06-17 | 1989-12-22 | Iwai Kikai Kogyo Kk | Auxiliary plug molding method in plastic molding |
JPH01317738A (en) * | 1988-06-17 | 1989-12-22 | Iwai Kikai Kogyo Kk | Auxiliary plug molding method in plastic molding and auxiliary plug |
JPH0428526A (en) * | 1990-05-24 | 1992-01-31 | Gifu Plast Ind Co Ltd | Plug of plug-assist molding equipment in molding of thermoplastic resin sheet |
JPH06505947A (en) * | 1990-12-31 | 1994-07-07 | メガ・サービス・ディ・アンジェロ・マストロパスクア・エ・チ・エッセ・エンネ・チ | A device that forms a bundle of boxes produced using a folding and gluing or stitching machine and packs them with a band. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5813336A (en) * | 1981-07-15 | 1983-01-25 | 有限会社横浜フイツシユセンタ− | Transportation of live fish |
-
1987
- 1987-07-01 JP JP16469587A patent/JPS649719A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5813336A (en) * | 1981-07-15 | 1983-01-25 | 有限会社横浜フイツシユセンタ− | Transportation of live fish |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01317739A (en) * | 1988-06-17 | 1989-12-22 | Iwai Kikai Kogyo Kk | Auxiliary plug molding method in plastic molding |
JPH01317738A (en) * | 1988-06-17 | 1989-12-22 | Iwai Kikai Kogyo Kk | Auxiliary plug molding method in plastic molding and auxiliary plug |
JPH0428526A (en) * | 1990-05-24 | 1992-01-31 | Gifu Plast Ind Co Ltd | Plug of plug-assist molding equipment in molding of thermoplastic resin sheet |
JPH06505947A (en) * | 1990-12-31 | 1994-07-07 | メガ・サービス・ディ・アンジェロ・マストロパスクア・エ・チ・エッセ・エンネ・チ | A device that forms a bundle of boxes produced using a folding and gluing or stitching machine and packs them with a band. |
Also Published As
Publication number | Publication date |
---|---|
JPH0544901B2 (en) | 1993-07-07 |
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