CA1011066A - Pre-injection foam prevention in injection molding apparatus - Google Patents

Pre-injection foam prevention in injection molding apparatus

Info

Publication number
CA1011066A
CA1011066A CA185,790A CA185790A CA1011066A CA 1011066 A CA1011066 A CA 1011066A CA 185790 A CA185790 A CA 185790A CA 1011066 A CA1011066 A CA 1011066A
Authority
CA
Canada
Prior art keywords
injection
molding apparatus
injection molding
foam prevention
prevention
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.)
Expired
Application number
CA185,790A
Other languages
English (en)
Other versions
CA185790S (en
Inventor
Dieter Alwes
Hans P. Leiste
Robert A. Melcher
Helmut Eckardt
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.)
Siemag Siegener Maschinenbau GmbH
Original Assignee
Siemag Siegener Maschinenbau GmbH
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
Priority claimed from DE19722263571 external-priority patent/DE2263571A1/de
Priority claimed from DE19732328222 external-priority patent/DE2328222A1/de
Application filed by Siemag Siegener Maschinenbau GmbH filed Critical Siemag Siegener Maschinenbau GmbH
Application granted granted Critical
Publication of CA1011066A publication Critical patent/CA1011066A/en
Expired 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
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • B29C44/424—Details of machines
    • B29C44/425—Valve or nozzle constructions; Details of injection devices
    • 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
    • B29C45/72—Heating or cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/83—Injection molding of polyolefin-type foam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S366/00—Agitating
    • Y10S366/601—Motor control
CA185,790A 1972-12-27 1973-11-14 Pre-injection foam prevention in injection molding apparatus Expired CA1011066A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722263571 DE2263571A1 (de) 1972-12-27 1972-12-27 Einrichtung zur herstellung von kunststoff-formkoerpern in spritzgiessformen
DE19732328222 DE2328222A1 (de) 1973-06-02 1973-06-02 Einrichtung zur herstellung von kunststoff-formkoerpern in pritzgiessformen

Publications (1)

Publication Number Publication Date
CA1011066A true CA1011066A (en) 1977-05-31

Family

ID=25764286

Family Applications (1)

Application Number Title Priority Date Filing Date
CA185,790A Expired CA1011066A (en) 1972-12-27 1973-11-14 Pre-injection foam prevention in injection molding apparatus

Country Status (6)

Country Link
US (1) US3937447A (es)
JP (1) JPS501161A (es)
CA (1) CA1011066A (es)
CH (1) CH563229A5 (es)
FR (1) FR2212226B3 (es)
GB (1) GB1453618A (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071591A (en) * 1973-06-07 1978-01-31 Nippon Petrochemicals Co. Ltd. Method of manufacturing foamed thermoplastic resin profiles
JPS5150978A (en) * 1974-10-30 1976-05-06 Sumitomo Chemical Co Echirenkeijugotaino kakyohatsuhoshashutsuseikeihoho
CA1072285A (en) * 1977-01-14 1980-02-26 Edward A. Ruhl Unitary plastic hinged article and method of making
DE2806560B2 (de) * 1978-02-16 1981-05-07 Kabel- und Metallwerke Gutehoffnungshütte AG, 3000 Hannover Verfahren zur kontinuierlichen Herstellung wärmeisolierter Leitungsrohre
US4315726A (en) * 1980-04-30 1982-02-16 Institute Po Metaloznanie I Technologia Na Metalite Distributing device for machines for injection molding of thermoplastic parts with solid skin and cellular core
US4599210A (en) * 1984-09-14 1986-07-08 Jennett James A Method of molding rubber articles and rubber molding machine
US4828395A (en) * 1985-02-21 1989-05-09 Yamato Scientific Company, Limited Continuous flow type homogenizer
MX163049B (es) * 1987-01-28 1991-08-09 Salver Ind Sa Procedimiento para la elaboracion de una pelota neumatica de pvc espumado y producto resultante
US5098267A (en) * 1990-06-22 1992-03-24 Union Carbide Industrial Gases Technology Corporation Apparatus and method for producing and molding structural foam
GB9120889D0 (en) * 1991-10-02 1991-11-13 Fusion Group Plc Injection moulding machines
GB2314040A (en) * 1996-06-15 1997-12-17 Rafael Zvi Karl Kilim Plastics moulding arrangement with mixing
US7144532B2 (en) * 2002-10-28 2006-12-05 Trexel, Inc. Blowing agent introduction systems and methods
US6810822B1 (en) * 2003-10-09 2004-11-02 Yao-Pang Chan Agricultural and gardening fertilizer applicator
US7935294B2 (en) * 2006-03-29 2011-05-03 Cadillac Products Automotive Company Reduced density foam and method for molding reduced density foam
DE102006029358A1 (de) * 2006-06-27 2008-01-03 Demag Ergotech Gmbh Schneckenpresse
EP1964605B1 (en) * 2007-02-28 2009-12-09 Shigeo Ando Injection valve of high pressure homogenizer
JP5185588B2 (ja) * 2007-02-28 2013-04-17 成雄 安藤 高圧均質化装置の噴射弁

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385671A (en) * 1965-03-09 1968-05-28 Airspace Inc Foam injection head
CH512987A (de) * 1969-09-04 1971-09-30 Buehler Ag Geb Verfahren und Vorrichtung zum Spritzgiessen von Kunststoff zu geschäumten Gegenständen
US3825235A (en) * 1970-06-03 1974-07-23 W Schwertfeger Method and apparatus for processing plasticizable material
US3795386A (en) * 1971-08-16 1974-03-05 Monsanto Co Shaft seal for low and high pressures
US3822057A (en) * 1971-11-01 1974-07-02 Gen Electric Shot volume control for injection molding machine

Also Published As

Publication number Publication date
CH563229A5 (es) 1975-06-30
JPS501161A (es) 1975-01-08
FR2212226B3 (es) 1976-10-22
FR2212226A1 (es) 1974-07-26
US3937447A (en) 1976-02-10
GB1453618A (en) 1976-10-27

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