WO2007099445A3 - Mold with shut-off wall which is pushed by the expanding material to close conduit - Google Patents

Mold with shut-off wall which is pushed by the expanding material to close conduit Download PDF

Info

Publication number
WO2007099445A3
WO2007099445A3 PCT/IB2007/000501 IB2007000501W WO2007099445A3 WO 2007099445 A3 WO2007099445 A3 WO 2007099445A3 IB 2007000501 W IB2007000501 W IB 2007000501W WO 2007099445 A3 WO2007099445 A3 WO 2007099445A3
Authority
WO
WIPO (PCT)
Prior art keywords
mold
shut
pushed
wall
conduit
Prior art date
Application number
PCT/IB2007/000501
Other languages
French (fr)
Other versions
WO2007099445A2 (en
Inventor
Piero Enrico Gilardi
Original Assignee
Toscana Gomma S P A
Piero Enrico Gilardi
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 Toscana Gomma S P A, Piero Enrico Gilardi filed Critical Toscana Gomma S P A
Publication of WO2007099445A2 publication Critical patent/WO2007099445A2/en
Publication of WO2007099445A3 publication Critical patent/WO2007099445A3/en

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
    • B29C44/58—Moulds
    • B29C44/588—Moulds with means for venting, e.g. releasing foaming gas
    • 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
    • B29C44/35—Component parts; Details or accessories
    • B29C44/351—Means for preventing foam to leak out from the foaming device during foaming
    • 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
    • B29C44/581—Closure devices for pour holes

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

A mold (1), for molding articles of foam material, has a hollow bottom portion (2) for receiving a mass (3) of expandable material; and a top portion (4) which is movable between an open position and a closed position, and supports at least one relief device (6) for allowing air out of the mold; the relief device (6) has at least one conduit (7) connecting the inner cavity (5) of the mold to the outside and formed through the top portion; and a shut-off wall (9) located inside the cavity and movable between a withdrawn rest position, in which it connects the cavity to the outside, and a forward work position, in which it is pushed by the expandable material onto an inner surface of the top portion (4) to close the inlet of the conduit (7) in fluidtight manner.
PCT/IB2007/000501 2006-03-03 2007-03-02 Mold with shut-off wall which is pushed by the expanding material to close conduit WO2007099445A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20060159 ITTO20060159A1 (en) 2006-03-03 2006-03-03 MOLD FOR THE FORMING OF FOAMED MATERIALS
ITTO2006A000159 2006-03-03

Publications (2)

Publication Number Publication Date
WO2007099445A2 WO2007099445A2 (en) 2007-09-07
WO2007099445A3 true WO2007099445A3 (en) 2007-11-22

Family

ID=38328449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/000501 WO2007099445A2 (en) 2006-03-03 2007-03-02 Mold with shut-off wall which is pushed by the expanding material to close conduit

Country Status (2)

Country Link
IT (1) ITTO20060159A1 (en)
WO (1) WO2007099445A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3127678B1 (en) * 2015-08-07 2024-05-01 SMP Deutschland GmbH Device and method for plastic foaming
EP3927515A4 (en) * 2019-02-19 2022-11-09 Proprietect L.P. Composite foam article
PL3921129T3 (en) 2020-01-17 2023-01-30 Covestro Deutschland Ag Method for the preparation of foamed flat moulded bodies and tool for performing the method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290510A (en) * 1937-02-22 1942-07-21 Talalay Josef Anton Apparatus for molding spongelike articles
DE2302906A1 (en) * 1973-01-22 1974-07-25 Bucher Guyer Ag Masch Mould for foamed polystyrene mouldings prodn - having valved steam nozzles responding to pressure extending through mould walls
FR2688166A1 (en) * 1992-03-06 1993-09-10 Faure Bertrand Automobile Mould for moulding a synthetic foam
EP1048429A2 (en) * 1999-04-28 2000-11-02 Misa Sud Refrigerazione S.P.A. Method and apparatus for vacuum foaming of panels
US6295787B1 (en) * 1999-09-01 2001-10-02 Mando Climate Control Corporation Insulated outer structure for refrigerated food storage apparatus and foam injection method using the same
US20050146067A1 (en) * 1997-01-23 2005-07-07 Kiichi Yamashita Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290510A (en) * 1937-02-22 1942-07-21 Talalay Josef Anton Apparatus for molding spongelike articles
DE2302906A1 (en) * 1973-01-22 1974-07-25 Bucher Guyer Ag Masch Mould for foamed polystyrene mouldings prodn - having valved steam nozzles responding to pressure extending through mould walls
FR2688166A1 (en) * 1992-03-06 1993-09-10 Faure Bertrand Automobile Mould for moulding a synthetic foam
US20050146067A1 (en) * 1997-01-23 2005-07-07 Kiichi Yamashita Two-pack urethane foam composition, and two-pack urethane foam composition injecting apparatus and method
EP1048429A2 (en) * 1999-04-28 2000-11-02 Misa Sud Refrigerazione S.P.A. Method and apparatus for vacuum foaming of panels
US6295787B1 (en) * 1999-09-01 2001-10-02 Mando Climate Control Corporation Insulated outer structure for refrigerated food storage apparatus and foam injection method using the same

Also Published As

Publication number Publication date
ITTO20060159A1 (en) 2007-09-04
WO2007099445A2 (en) 2007-09-07

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