FR2010450A1 - Porous mould wall zones for steam heated mouldings of - Google Patents

Porous mould wall zones for steam heated mouldings of

Info

Publication number
FR2010450A1
FR2010450A1 FR6918942A FR6918942A FR2010450A1 FR 2010450 A1 FR2010450 A1 FR 2010450A1 FR 6918942 A FR6918942 A FR 6918942A FR 6918942 A FR6918942 A FR 6918942A FR 2010450 A1 FR2010450 A1 FR 2010450A1
Authority
FR
France
Prior art keywords
mouldings
mould
steam
esp
wall zones
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.)
Withdrawn
Application number
FR6918942A
Other languages
French (fr)
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.)
Saint Gobain Isover G+H AG
Original Assignee
Gruenzweig und Hartmann AG
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 Gruenzweig und Hartmann AG filed Critical Gruenzweig und Hartmann AG
Publication of FR2010450A1 publication Critical patent/FR2010450A1/en
Withdrawn legal-status Critical Current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
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould
    • B29C44/3434—Heating by introducing steam in the mould by using a sheet, grid, etc. to distribute the steam in the mould
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/3814—Porous moulds
    • 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
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/02—Ceramics

Abstract

Mould with steam injection facilities, e.g. for moulding expandable polystyrene beads, where part or all of the mould cavity walls are made of a porous material, esp. sintered metal sheet backed by suitable local support blocks. The steam (or hot air) is admitted via the porous wall zones. Esp. for large mouldings, or mouldings with narrow cavity sections, or mouldings bearing inscriptions in light relief formed by carved or indented characters on the mould walls. Steam admitted more uniformly than when isolated injection nozzles mounted flush with the mould wall surfaces are used, in particular turbulent swirl patterns in material near such nozzles are avoided.
FR6918942A 1968-06-08 1969-06-09 Porous mould wall zones for steam heated mouldings of Withdrawn FR2010450A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681778819 DE1778819A1 (en) 1968-06-08 1968-06-08 Foam mold for foaming synthetic resin compounds

Publications (1)

Publication Number Publication Date
FR2010450A1 true FR2010450A1 (en) 1970-02-13

Family

ID=5703599

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6918942A Withdrawn FR2010450A1 (en) 1968-06-08 1969-06-09 Porous mould wall zones for steam heated mouldings of

Country Status (5)

Country Link
BE (1) BE730774A (en)
CH (1) CH478647A (en)
DE (1) DE1778819A1 (en)
ES (1) ES167922Y (en)
FR (1) FR2010450A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447803A1 (en) * 1979-01-30 1980-08-29 Teubert Joachim PROCESS FOR PRODUCING MOLDED PARTS MADE OF PLASTIC MATERIAL TRANSFORMED INTO FOAM, SUCH AS FOR EXAMPLE POLYSTYRENE CONVERTED INTO FOAM
EP0139972A2 (en) * 1983-08-26 1985-05-08 BASF Aktiengesellschaft Method of producing polyolefin foam articles
EP0434024A2 (en) * 1989-12-21 1991-06-26 Jsp Corporation Molding apparatus and its use for a production process of expansion-molded articles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2618720B1 (en) * 1987-07-29 1989-11-03 Peugeot MOLD FOR PREPARING POLYSTYRENE PARTS, ESPECIALLY MODELS FOR A LOSS FOAM MOLDING PROCESS
GB9716738D0 (en) * 1997-08-08 1997-10-15 Ciba Geigy Ag Tools
DE10105770A1 (en) * 2001-02-08 2002-08-14 Volkswagen Ag Twin slush skin molding process, involves extraction of trapped air and gas from an expandable layer through a porous male punch wall
FR3018721B1 (en) * 2014-03-20 2016-12-23 Peugeot Citroen Automobiles Sa DEVICE FOR MOLDING AN EXPANDED POLYSTYRENE PIECE
CN111716621A (en) * 2019-03-20 2020-09-29 金树科技股份有限公司 Forming mould for porous starch container

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2447803A1 (en) * 1979-01-30 1980-08-29 Teubert Joachim PROCESS FOR PRODUCING MOLDED PARTS MADE OF PLASTIC MATERIAL TRANSFORMED INTO FOAM, SUCH AS FOR EXAMPLE POLYSTYRENE CONVERTED INTO FOAM
EP0139972A2 (en) * 1983-08-26 1985-05-08 BASF Aktiengesellschaft Method of producing polyolefin foam articles
EP0139972A3 (en) * 1983-08-26 1987-01-28 BASF Aktiengesellschaft Method of producing polyolefin foam articles
EP0434024A2 (en) * 1989-12-21 1991-06-26 Jsp Corporation Molding apparatus and its use for a production process of expansion-molded articles
EP0434024A3 (en) * 1989-12-21 1991-10-09 Jsp Corporation Production process of expansion-molded article

Also Published As

Publication number Publication date
ES167922Y (en) 1972-06-16
DE1778819A1 (en) 1972-03-23
ES167922U (en) 1971-10-16
BE730774A (en) 1969-09-01
CH478647A (en) 1969-09-30

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Legal Events

Date Code Title Description
ST Notification of lapse