JPS5722031A - Molding method of circular resin gasket - Google Patents

Molding method of circular resin gasket

Info

Publication number
JPS5722031A
JPS5722031A JP9562580A JP9562580A JPS5722031A JP S5722031 A JPS5722031 A JP S5722031A JP 9562580 A JP9562580 A JP 9562580A JP 9562580 A JP9562580 A JP 9562580A JP S5722031 A JPS5722031 A JP S5722031A
Authority
JP
Japan
Prior art keywords
resin
blind
product
gate
gate part
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
JP9562580A
Other languages
Japanese (ja)
Inventor
Kenichi Shinoda
Yasuhiro Ishiguro
Kuniyoshi Nishida
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.)
FDK Corp
Original Assignee
FDK 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 FDK Corp filed Critical FDK Corp
Priority to JP9562580A priority Critical patent/JPS5722031A/en
Publication of JPS5722031A publication Critical patent/JPS5722031A/en
Pending legal-status Critical Current

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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • B29C2045/0044—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks expelling moulding material outside the mould cavity at the weld line location
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2669—Moulds with means for removing excess material, e.g. with overflow cavities

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To prevent the occurrence of welding crack lines and to equalize the whole circumferences of circular parts by a method wherein a blind part for storing resin is provided on the mold part for each product. CONSTITUTION:On the mold part 5a for each product a second gate part 5d is provided respectivey on the symmetrical position to an introducing gate part 5c and further a blind part 5e is provided so as to reserve a definite amount of the resin flowing out through this second gate part 5d, Into this blind part 5e is introduced a joint end of resin which is divided into two parts and flows into a product mold part 5a through an introducing gate part 5c. The resin which has flown in is joined at the symmetrical position with an introducing gate part 5c, reaches the blind part 5e through a second gate part 5d, terminates and is stored. Accordingly, the parts in which welding crack lines may occur are turned out of the product mold part 5a.
JP9562580A 1980-07-15 1980-07-15 Molding method of circular resin gasket Pending JPS5722031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9562580A JPS5722031A (en) 1980-07-15 1980-07-15 Molding method of circular resin gasket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9562580A JPS5722031A (en) 1980-07-15 1980-07-15 Molding method of circular resin gasket

Publications (1)

Publication Number Publication Date
JPS5722031A true JPS5722031A (en) 1982-02-04

Family

ID=14142704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9562580A Pending JPS5722031A (en) 1980-07-15 1980-07-15 Molding method of circular resin gasket

Country Status (1)

Country Link
JP (1) JPS5722031A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124672A (en) * 1979-03-22 1980-09-25 Fujitsu Ltd Printer
JPS63112127A (en) * 1986-10-30 1988-05-17 Hashimoto Forming Co Ltd Manufacture of frame part of plate-like molding
US5314326A (en) * 1991-04-09 1994-05-24 Polyplastics Co. Ltd. Mold having a resin well forming a weld at the union of two separate resin streams
US5484563A (en) * 1992-06-05 1996-01-16 Polyplastics Co., Ltd. Injection molding process using a resin reservoir containing a retractable piston
EP1312455A3 (en) * 2001-11-19 2003-06-25 Shin-Etsu Chemical Co., Ltd. Injection mold and method for manufacturing injection molded articles
EP2664434B1 (en) * 2012-04-17 2016-10-05 D.W. Plastics NV Injection moulding method for forming a bottle crate, bottle crate and corresponding apparatus for obtaining such bottle crate

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55124672A (en) * 1979-03-22 1980-09-25 Fujitsu Ltd Printer
JPS63112127A (en) * 1986-10-30 1988-05-17 Hashimoto Forming Co Ltd Manufacture of frame part of plate-like molding
US5314326A (en) * 1991-04-09 1994-05-24 Polyplastics Co. Ltd. Mold having a resin well forming a weld at the union of two separate resin streams
US5484563A (en) * 1992-06-05 1996-01-16 Polyplastics Co., Ltd. Injection molding process using a resin reservoir containing a retractable piston
EP1312455A3 (en) * 2001-11-19 2003-06-25 Shin-Etsu Chemical Co., Ltd. Injection mold and method for manufacturing injection molded articles
US6855286B2 (en) 2001-11-19 2005-02-15 Shin-Etsu Chemical Co., Ltd. Injection mold and method for manufacturing injection molded articles
EP2664434B1 (en) * 2012-04-17 2016-10-05 D.W. Plastics NV Injection moulding method for forming a bottle crate, bottle crate and corresponding apparatus for obtaining such bottle crate

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