DE1954478A1 - Verfahren zur Herstellung geschichteter Gegenstaende und Vorrichtung zur Durchfuehrung des Verfahrens - Google Patents

Verfahren zur Herstellung geschichteter Gegenstaende und Vorrichtung zur Durchfuehrung des Verfahrens

Info

Publication number
DE1954478A1
DE1954478A1 DE19691954478 DE1954478A DE1954478A1 DE 1954478 A1 DE1954478 A1 DE 1954478A1 DE 19691954478 DE19691954478 DE 19691954478 DE 1954478 A DE1954478 A DE 1954478A DE 1954478 A1 DE1954478 A1 DE 1954478A1
Authority
DE
Germany
Prior art keywords
mold
batch
sprue
foamable
injected
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
DE19691954478
Other languages
German (de)
English (en)
Inventor
Smith Alan George
Sandiford Denis James Henry
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of DE1954478A1 publication Critical patent/DE1954478A1/de
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
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
    • B29C44/083—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another
    • B29C44/086—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another and feeding more material into the enlarged cavity
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
    • 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
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C2045/167—Making multilayered or multicoloured articles injecting the second layer through the first layer
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
DE19691954478 1968-11-06 1969-10-29 Verfahren zur Herstellung geschichteter Gegenstaende und Vorrichtung zur Durchfuehrung des Verfahrens Pending DE1954478A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5265868 1968-11-06

Publications (1)

Publication Number Publication Date
DE1954478A1 true DE1954478A1 (de) 1970-06-11

Family

ID=10464774

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691954478 Pending DE1954478A1 (de) 1968-11-06 1969-10-29 Verfahren zur Herstellung geschichteter Gegenstaende und Vorrichtung zur Durchfuehrung des Verfahrens

Country Status (3)

Country Link
US (1) UST883004I4 (enExample)
DE (1) DE1954478A1 (enExample)
GB (1) GB1264320A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720043A1 (fr) * 1994-05-21 1995-11-24 Petri Ag Pièce de recouvrement pour dispositifs de protection contre les chocs à sac gonflable, et son procédé de fabrication.
US5656215A (en) * 1994-04-23 1997-08-12 Battenfeld Gmbh Process for injection molding objects having at least two different layers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5656215A (en) * 1994-04-23 1997-08-12 Battenfeld Gmbh Process for injection molding objects having at least two different layers
US5882559A (en) * 1994-04-23 1999-03-16 Battenfeld Gmbh Process for injection molding objects having at least two different layers
FR2720043A1 (fr) * 1994-05-21 1995-11-24 Petri Ag Pièce de recouvrement pour dispositifs de protection contre les chocs à sac gonflable, et son procédé de fabrication.

Also Published As

Publication number Publication date
GB1264320A (enExample) 1972-02-23
UST883004I4 (en) 1971-02-02

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