JPH0379317A - Plastic molded product - Google Patents

Plastic molded product

Info

Publication number
JPH0379317A
JPH0379317A JP21484389A JP21484389A JPH0379317A JP H0379317 A JPH0379317 A JP H0379317A JP 21484389 A JP21484389 A JP 21484389A JP 21484389 A JP21484389 A JP 21484389A JP H0379317 A JPH0379317 A JP H0379317A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
runner
resin
7b
3b
gate
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
JP21484389A
Inventor
Shinichi Ishii
Original Assignee
Toshiba 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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/27Sprue channels Runner channels or runner nozzles
    • B29C45/2701Details not specific to hot or cold runner channels
    • B29C45/2703Means for controlling the runner flow, e.g. runner switches, adjustable runners or gates
    • B29C45/2704Controlling the filling rates or the filling times of two or more mould cavities by controlling the cross section or the length of the runners or the gates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C2045/2683Plurality of independent mould cavities in a single mould
    • B29C2045/2687Plurality of independent mould cavities in a single mould controlling the filling thereof

Abstract

PURPOSE: To manufacture a product of good molding properties and dimension accuracy by making small section areas of bonding sections with resin constituted parts of runner sections and adjusting the molding pressure.
CONSTITUTION: Resin constituted parts 3a and 3b and a gate 6 are connected together by belt-shaped runners 7a and 7b formed respectively and integrally with a base 2. The molded parts 3a and 3b are of almost same shape and dimension and the distance between the resin molded part 3a and the gate 6 is longer than that of 3b and the gate, and the section area of a bonding section 7c with the resin molded part 3a of the runner 7b is lower than those of other sections of the runner 7b. The pressure difference between the runner 7a and the runner 7b generated at the time of resin injection, therefore, can be equalized by setting the section area of the bonding section 7c properly. A plastic molded product of good molding properties and dimension accuracy can be manufactured by said arrangement.
COPYRIGHT: (C)1991,JPO&Japio
JP21484389A 1989-08-23 1989-08-23 Plastic molded product Pending JPH0379317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21484389A JPH0379317A (en) 1989-08-23 1989-08-23 Plastic molded product

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP21484389A JPH0379317A (en) 1989-08-23 1989-08-23 Plastic molded product
KR900012834A KR920005525B1 (en) 1989-08-23 1990-08-21 Plastic molded product

Publications (1)

Publication Number Publication Date
JPH0379317A true true JPH0379317A (en) 1991-04-04

Family

ID=16662465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21484389A Pending JPH0379317A (en) 1989-08-23 1989-08-23 Plastic molded product

Country Status (2)

Country Link
JP (1) JPH0379317A (en)
KR (1) KR920005525B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012162222A1 (en) * 2011-05-20 2012-11-29 The Procter & Gamble Company Non-naturally balanced feed system for an injection molding apparatus
US8591219B1 (en) 2012-05-02 2013-11-26 The Procter & Gamble Company Injection mold having a simplified evaporative cooling system
US8757999B2 (en) 2011-05-20 2014-06-24 The Procter & Gamble Company Alternative pressure control for a low constant pressure injection molding apparatus
US8828291B2 (en) 2011-05-20 2014-09-09 The Procter & Gamble Company Method for substantially constant pressure injection molding of thinwall parts
US9089998B2 (en) 2012-02-24 2015-07-28 Imflux, Inc. Injection mold having a simplified cooling system
US9604398B2 (en) 2012-11-08 2017-03-28 Imflux Inc Injection mold with fail safe pressure mechanism
US9610721B2 (en) 2012-11-21 2017-04-04 Imflux Inc Reduced size runner for an injection mold system
US9707709B2 (en) 2011-05-20 2017-07-18 Imflux Inc Method for injection molding at low, substantially constant pressure
US10076861B2 (en) 2011-05-20 2018-09-18 Imflux Inc Apparatus for injection molding at low constant pressure

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012162222A1 (en) * 2011-05-20 2012-11-29 The Procter & Gamble Company Non-naturally balanced feed system for an injection molding apparatus
US9815233B2 (en) 2011-05-20 2017-11-14 Imflux, Inc. Method and apparatus for substantially constant pressure injection molding of thinwall parts
US8757999B2 (en) 2011-05-20 2014-06-24 The Procter & Gamble Company Alternative pressure control for a low constant pressure injection molding apparatus
US8828291B2 (en) 2011-05-20 2014-09-09 The Procter & Gamble Company Method for substantially constant pressure injection molding of thinwall parts
US8911228B2 (en) 2011-05-20 2014-12-16 Imflux, Inc. Non-naturally balanced feed system for an injection molding apparatus
US9707709B2 (en) 2011-05-20 2017-07-18 Imflux Inc Method for injection molding at low, substantially constant pressure
US9272452B2 (en) 2011-05-20 2016-03-01 Imflux, Inc. Method and apparatus for substantially constant pressure injection molding of thinwall parts
US10076861B2 (en) 2011-05-20 2018-09-18 Imflux Inc Apparatus for injection molding at low constant pressure
US9089998B2 (en) 2012-02-24 2015-07-28 Imflux, Inc. Injection mold having a simplified cooling system
US9475211B2 (en) 2012-02-24 2016-10-25 Imflux Inc Injection mold having a simplified cooling system
US9682505B2 (en) 2012-05-02 2017-06-20 Imflux Inc Injection mold having a simplified evaporative cooling system or a simplified cooling system with exotic cooling fluids
US8591219B1 (en) 2012-05-02 2013-11-26 The Procter & Gamble Company Injection mold having a simplified evaporative cooling system
US9604398B2 (en) 2012-11-08 2017-03-28 Imflux Inc Injection mold with fail safe pressure mechanism
US9610721B2 (en) 2012-11-21 2017-04-04 Imflux Inc Reduced size runner for an injection mold system

Also Published As

Publication number Publication date Type
KR920005525B1 (en) 1992-07-06 grant

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