JPS55164136A - Production of waterstop - Google Patents

Production of waterstop

Info

Publication number
JPS55164136A
JPS55164136A JP7286279A JP7286279A JPS55164136A JP S55164136 A JPS55164136 A JP S55164136A JP 7286279 A JP7286279 A JP 7286279A JP 7286279 A JP7286279 A JP 7286279A JP S55164136 A JPS55164136 A JP S55164136A
Authority
JP
Japan
Prior art keywords
runner
waterstops
waterstop
groove
gates
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
JP7286279A
Other languages
Japanese (ja)
Inventor
Tomiyoshi Okano
Seiichi Murakami
Seigo Yamawaki
Katsutaka Matsukuma
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP7286279A priority Critical patent/JPS55164136A/en
Publication of JPS55164136A publication Critical patent/JPS55164136A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain waterstops which are easy to transport because a runner keeps a plurality of them in connection and are easy to cut off because of its thin gates by a method wherein a synthetic resin is injected from a runner groove into a plurality of waterstop molding cavities through a plurality of gate grooves having small cross-sectional areas.
CONSTITUTION: A metal mold A for waterstops comprises a runner groove 1, gate grooves 2 smaller in cross-sectional as area than the runner groove 1, waterstop molding cavities 3, etc. A resin is flowed from the nozzle of an injection molding machine into the runner groove 1 of the mold A, and injected from the runner groove 1 into the waterstop molding cavities 3 through the gate grooves 2, whereby waterstops 6 are molded at the ends of a runner 4, in connection with the runner 4 through gates 5 which are smaller in cross-sectional area than the runner 4. The thus produced products are packaged and transported in the condition where two waterstops 6 are coupled by the runner 4, and the waterstops 6 are separated from the runner 4 by cutting the gates 5 before use.
COPYRIGHT: (C)1980,JPO&Japio
JP7286279A 1979-06-09 1979-06-09 Production of waterstop Pending JPS55164136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7286279A JPS55164136A (en) 1979-06-09 1979-06-09 Production of waterstop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7286279A JPS55164136A (en) 1979-06-09 1979-06-09 Production of waterstop

Publications (1)

Publication Number Publication Date
JPS55164136A true JPS55164136A (en) 1980-12-20

Family

ID=13501571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7286279A Pending JPS55164136A (en) 1979-06-09 1979-06-09 Production of waterstop

Country Status (1)

Country Link
JP (1) JPS55164136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021026932A (en) * 2019-08-07 2021-02-22 矢崎総業株式会社 connector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130864A (en) * 1976-04-27 1977-11-02 Seikosha Kk Printing wheel of sybthetic resin and method of making the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52130864A (en) * 1976-04-27 1977-11-02 Seikosha Kk Printing wheel of sybthetic resin and method of making the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021026932A (en) * 2019-08-07 2021-02-22 矢崎総業株式会社 connector

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