JPS5692013A - Press working of plastic sheet - Google Patents

Press working of plastic sheet

Info

Publication number
JPS5692013A
JPS5692013A JP17110079A JP17110079A JPS5692013A JP S5692013 A JPS5692013 A JP S5692013A JP 17110079 A JP17110079 A JP 17110079A JP 17110079 A JP17110079 A JP 17110079A JP S5692013 A JPS5692013 A JP S5692013A
Authority
JP
Japan
Prior art keywords
projection
indentation
sheet
heat
reverse taper
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
Application number
JP17110079A
Other languages
Japanese (ja)
Other versions
JPS592610B2 (en
Inventor
Tsugio Matsuoka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sakura Color Products Corp
Original Assignee
Sakura Color Products Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sakura Color Products Corp filed Critical Sakura Color Products Corp
Priority to JP17110079A priority Critical patent/JPS592610B2/en
Publication of JPS5692013A publication Critical patent/JPS5692013A/en
Publication of JPS592610B2 publication Critical patent/JPS592610B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain plastic sheet processed goods having a reverse taper part and the like by a method wherein a die having a special indentation with an upper contracted part and a punch having an elastic projection part manufactured from heat-resisting, elastic resin and the like.
CONSTITUTION: A female mold 1, made from rigid matter such as steel etc. is equipped with a special indentation 2 such as a narrow groove or a hollow, etc. near the upper opening in the form of an arc internal surface or a reverse taper, while a male mold 3 is equipped with a projection 4 which is rich in heat-resistance, elasticity such as silicone rubber etc. in the part corresponding to this indentation 2. A hard PVC sheet 6, for example, is laid between both molds 1, 3 and the sheet 6 is pressed as it is heated and softened. The projection 4 does not degenerate on account of its heat resistance, undergoes elastic deformation when it passes near the narrow opening part, the sheet 6 is brought into close contact with the inside of the indentation 2 by means of stability of the projection when the projection is pushed in thoroughly and is deformed plastically along the indentation 2. Then the male mold 3 is separated from the female one 1 to take out a molded article.
COPYRIGHT: (C)1981,JPO&Japio
JP17110079A 1979-12-27 1979-12-27 Pressing method for plastic sheets Expired JPS592610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17110079A JPS592610B2 (en) 1979-12-27 1979-12-27 Pressing method for plastic sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17110079A JPS592610B2 (en) 1979-12-27 1979-12-27 Pressing method for plastic sheets

Publications (2)

Publication Number Publication Date
JPS5692013A true JPS5692013A (en) 1981-07-25
JPS592610B2 JPS592610B2 (en) 1984-01-19

Family

ID=15916976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17110079A Expired JPS592610B2 (en) 1979-12-27 1979-12-27 Pressing method for plastic sheets

Country Status (1)

Country Link
JP (1) JPS592610B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62257825A (en) * 1986-05-02 1987-11-10 Toyota Auto Body Co Ltd Molding method of sheet material
JP2006256000A (en) * 2005-03-16 2006-09-28 Namio Nakazawa Method and apparatus for manufacturing plastic product
JP2019198982A (en) * 2018-05-14 2019-11-21 株式会社ギンポーパック Container molding device and method for producing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62257825A (en) * 1986-05-02 1987-11-10 Toyota Auto Body Co Ltd Molding method of sheet material
JP2006256000A (en) * 2005-03-16 2006-09-28 Namio Nakazawa Method and apparatus for manufacturing plastic product
JP2019198982A (en) * 2018-05-14 2019-11-21 株式会社ギンポーパック Container molding device and method for producing the same

Also Published As

Publication number Publication date
JPS592610B2 (en) 1984-01-19

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