DD123067A1 - - Google Patents

Info

Publication number
DD123067A1
DD123067A1 DD19014675A DD19014675A DD123067A1 DD 123067 A1 DD123067 A1 DD 123067A1 DD 19014675 A DD19014675 A DD 19014675A DD 19014675 A DD19014675 A DD 19014675A DD 123067 A1 DD123067 A1 DD 123067A1
Authority
DD
German Democratic Republic
Application number
DD19014675A
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 filed Critical
Priority to DD19014675A priority Critical patent/DD123067A1/xx
Publication of DD123067A1 publication Critical patent/DD123067A1/xx
Priority to DE19762655255 priority patent/DE2655255A1/de

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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
    • 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
    • B29C44/04—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities
    • B29C44/0461—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 consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
    • 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
    • B29C45/1703—Introducing an auxiliary fluid into the mould
    • B29C45/1734—Nozzles therefor
    • B29C45/1735—Nozzles for introducing the fluid through the mould gate, e.g. incorporated in the injection nozzle

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
DD19014675A 1975-12-15 1975-12-15 DD123067A1 (no)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DD19014675A DD123067A1 (no) 1975-12-15 1975-12-15
DE19762655255 DE2655255A1 (de) 1975-12-15 1976-12-07 Verfahren und vorrichtung zur herstellung von formteilen mit geschlossener haut und zelligem kern aus treibmittelhaltigen thermoplasten

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD19014675A DD123067A1 (no) 1975-12-15 1975-12-15

Publications (1)

Publication Number Publication Date
DD123067A1 true DD123067A1 (no) 1976-11-20

Family

ID=5502815

Family Applications (1)

Application Number Title Priority Date Filing Date
DD19014675A DD123067A1 (no) 1975-12-15 1975-12-15

Country Status (2)

Country Link
DD (1) DD123067A1 (no)
DE (1) DE2655255A1 (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255368A (en) * 1979-07-18 1981-03-10 Union Carbide Corporation Structural foam molding process
DE3927122A1 (de) * 1989-08-17 1991-02-21 Thyssen Polymer Gmbh Spritzgussverfahren und einrichtung zur herstellung hohler kunststoffgegenstaende
DE3942957A1 (de) * 1989-12-23 1991-07-11 Ziegler Hans Peter Vorrichtung zum einbringen eines gases in den hohlraum einer spritzform zur herstellung hohler kunststoffkoerper

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2139548B (en) * 1983-05-11 1986-11-19 James Watson Hendry Injection moulding
JPH0788025B2 (ja) * 1987-04-28 1995-09-27 三菱瓦斯化学株式会社 偏肉補強部構造を有する合成樹脂成形品の製造法
GB8722620D0 (en) * 1987-09-25 1987-11-04 Cinpres Ltd Injection moulding
DE4132986C2 (de) * 1991-10-04 1994-01-13 Peguform Werke Gmbh Düsenanordnung zum Spritzgießen von großflächigen Kunststoffteilen mit eingeschlossenen Hohlräumen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255368A (en) * 1979-07-18 1981-03-10 Union Carbide Corporation Structural foam molding process
DE3927122A1 (de) * 1989-08-17 1991-02-21 Thyssen Polymer Gmbh Spritzgussverfahren und einrichtung zur herstellung hohler kunststoffgegenstaende
DE3942957A1 (de) * 1989-12-23 1991-07-11 Ziegler Hans Peter Vorrichtung zum einbringen eines gases in den hohlraum einer spritzform zur herstellung hohler kunststoffkoerper

Also Published As

Publication number Publication date
DE2655255A1 (de) 1977-06-16

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