JPS557406A - Preparation of plastic case provided with uneven base plate - Google Patents

Preparation of plastic case provided with uneven base plate

Info

Publication number
JPS557406A
JPS557406A JP8001678A JP8001678A JPS557406A JP S557406 A JPS557406 A JP S557406A JP 8001678 A JP8001678 A JP 8001678A JP 8001678 A JP8001678 A JP 8001678A JP S557406 A JPS557406 A JP S557406A
Authority
JP
Japan
Prior art keywords
base plate
lower mold
mold
molding
uneven
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
Application number
JP8001678A
Other languages
Japanese (ja)
Inventor
Shinji Nakanomura
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.)
Taisei Kako Co Ltd
Original Assignee
Taisei Kako Co Ltd
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 Taisei Kako Co Ltd filed Critical Taisei Kako Co Ltd
Priority to JP8001678A priority Critical patent/JPS557406A/en
Publication of JPS557406A publication Critical patent/JPS557406A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To manufacture a plastic case provided with an uneven base plate that its production cost is cheap and the accuracy of dimensions is excellent, by preforming a case prototype by means of injection molding, and by molding the uneven base plate by means of vacuum molding.
CONSTITUTION: A case prototype 3A with a side-wall 2 and a flat base plate 1A is preformed by means of an injection molding method by using a metal mold 4 that forms a molding chamber 8 by a lower mold 5, an intermediate mold 6 and an upper mold 7, which can mutually be partitioned. The upper mold 7 and the lower mold 5 are separated, and a lower mold 10 for vacuum molding is inserted in place of the lower mold 5. The lower mold 10 is equipped with an uneven surface 11 formed along a shape of an uneven base plate of a case to be molded, and suction air is worked to the vacuum holes 12 of the lower mold 10 while the base plate 1A remains as it is maintained under a temperature condition that can mold, thus molding the thin uneven base plate 1 with cushion capacity formed along the uneven surface 11 of the lower mold 10 by means of vacuum molding.
COPYRIGHT: (C)1980,JPO&Japio
JP8001678A 1978-06-30 1978-06-30 Preparation of plastic case provided with uneven base plate Pending JPS557406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8001678A JPS557406A (en) 1978-06-30 1978-06-30 Preparation of plastic case provided with uneven base plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8001678A JPS557406A (en) 1978-06-30 1978-06-30 Preparation of plastic case provided with uneven base plate

Publications (1)

Publication Number Publication Date
JPS557406A true JPS557406A (en) 1980-01-19

Family

ID=13706500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8001678A Pending JPS557406A (en) 1978-06-30 1978-06-30 Preparation of plastic case provided with uneven base plate

Country Status (1)

Country Link
JP (1) JPS557406A (en)

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