JPS55103936A - Mold for foam-molding - Google Patents

Mold for foam-molding

Info

Publication number
JPS55103936A
JPS55103936A JP1038479A JP1038479A JPS55103936A JP S55103936 A JPS55103936 A JP S55103936A JP 1038479 A JP1038479 A JP 1038479A JP 1038479 A JP1038479 A JP 1038479A JP S55103936 A JPS55103936 A JP S55103936A
Authority
JP
Japan
Prior art keywords
mold
deaeration
ports
foamed
product
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
JP1038479A
Other languages
Japanese (ja)
Inventor
Hisao Inage
Yoshie Kodera
Masayuki Takano
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1038479A priority Critical patent/JPS55103936A/en
Publication of JPS55103936A publication Critical patent/JPS55103936A/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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain a mold for foam-molding which permits effectively removing a spilt, foamed product during a mold releasing operation and which has an excellent deaeration effect, by providing the mold with conical deaeration ports which are outwardly converged and which are formed such that the outer end portions of the deaeration ports have a predetermined diameter. CONSTITUTION:Each of deaeration ports 1 is conically formed such as to be converged toward the outer end thereof, and each of edges 7 has an acute angle. The diameter (d) of the outer end portion of the port 1 is 0.1-2mm. A resin placed in the mold is raised toward an upper mold 3 as the foaming thereof progresses, and the air accumulated in the mold is discharged to the atmosphere so that the cavity in the mold is completely filled with the foamed resin. When the foaming reaction has further progressed, the foamed resin is pressed against the inner surface of the mold which defines the cavity so that the foamed resin is spilt from the deaeration ports due to the foaming pressure to be formed into a foamd product 6. Since the diameter of the edge 7 of each of the deaeration ports 1 is small, the amount of foamed product 6 spilt from the ports 1 is small. When a molded product 5 is released from the mold, it can be completely separated from the foamed product 6 owing to the edge effect of the edges 7.
JP1038479A 1979-02-02 1979-02-02 Mold for foam-molding Pending JPS55103936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1038479A JPS55103936A (en) 1979-02-02 1979-02-02 Mold for foam-molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1038479A JPS55103936A (en) 1979-02-02 1979-02-02 Mold for foam-molding

Publications (1)

Publication Number Publication Date
JPS55103936A true JPS55103936A (en) 1980-08-08

Family

ID=11748620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1038479A Pending JPS55103936A (en) 1979-02-02 1979-02-02 Mold for foam-molding

Country Status (1)

Country Link
JP (1) JPS55103936A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013080589A1 (en) * 2011-11-30 2013-06-06 株式会社ブリヂストン Die, molding device, and method for producing foam molded body
JP2013111975A (en) * 2012-04-27 2013-06-10 Bridgestone Corp Equipment for molding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013080589A1 (en) * 2011-11-30 2013-06-06 株式会社ブリヂストン Die, molding device, and method for producing foam molded body
US9808968B2 (en) 2011-11-30 2017-11-07 Bridgestone Corporation Mold, molding machine, and foamed molded body manufacturing method
JP2013111975A (en) * 2012-04-27 2013-06-10 Bridgestone Corp Equipment for molding

Similar Documents

Publication Publication Date Title
GB2073032A (en) Apparatus for aerating beverages
GB1134460A (en) Improvements in or relating to the filling of moulds
JPH01118417A (en) Method for foam-molding foam integral with skin material
JPS55103936A (en) Mold for foam-molding
US2206757A (en) Manufacture of spongy and cellular products from rubber and rubberlike materials
US4721279A (en) Foam mold equipped with a self-cleaning mold vent assembly
DE3067043D1 (en) Method and apparatus for molding a tire
JPS5715943A (en) Vacuum extruder
US2903762A (en) Method and apparatus for forming cores
JPS56111648A (en) Manufacture of porous resin product
JPS5454385A (en) Device for cutting thin film
JPS633796Y2 (en)
JPS55158952A (en) Moldng and vulcanizing of rubber
JPS6110969Y2 (en)
JPH0418821Y2 (en)
US2480454A (en) Apparatus for preparing investment materials
JPS5517519A (en) Production device of synthetic resin foamed product
JPS55149749A (en) Mold molding method
JPS5458770A (en) Production of instrument panel
EP0109720B1 (en) Device for moulding meat in vacuo
JPH0226653Y2 (en)
JPS55118839A (en) Foam molding die
JPS5571534A (en) Continuous extruding device for foamed body
JPS59123640A (en) Mold for rubber casting molding
KR19980046811U (en) Degassing Structure of Injection Mold