PT77935B - Method and apparatus for molding - Google Patents

Method and apparatus for molding

Info

Publication number
PT77935B
PT77935B PT77935A PT7793584A PT77935B PT 77935 B PT77935 B PT 77935B PT 77935 A PT77935 A PT 77935A PT 7793584 A PT7793584 A PT 7793584A PT 77935 B PT77935 B PT 77935B
Authority
PT
Portugal
Prior art keywords
molding
Prior art date
Application number
PT77935A
Other languages
Portuguese (pt)
Other versions
PT77935A (en
Inventor
Sherwood Gleen Benfield
Original Assignee
Polycast Corp
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 Polycast Corp filed Critical Polycast Corp
Publication of PT77935A publication Critical patent/PT77935A/en
Publication of PT77935B publication Critical patent/PT77935B/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
    • B29C44/02—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
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1252—Removing portions of the preformed parts after the moulding step
    • 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
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • 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
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • B29C33/68—Release sheets
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0003—Discharging moulded articles from 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
    • 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
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
PT77935A 1983-01-10 1984-01-09 Method and apparatus for molding PT77935B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45684283A 1983-01-10 1983-01-10
US49882383A 1983-05-27 1983-05-27

Publications (2)

Publication Number Publication Date
PT77935A PT77935A (en) 1984-02-01
PT77935B true PT77935B (en) 1986-04-16

Family

ID=27038384

Family Applications (1)

Application Number Title Priority Date Filing Date
PT77935A PT77935B (en) 1983-01-10 1984-01-09 Method and apparatus for molding

Country Status (10)

Country Link
EP (1) EP0131037A1 (en)
JP (1) JPS60500409A (en)
KR (1) KR840007379A (en)
DK (1) DK421884A (en)
ES (2) ES528686A0 (en)
FI (1) FI840074A0 (en)
IL (1) IL70613A0 (en)
NO (1) NO843546L (en)
PT (1) PT77935B (en)
WO (1) WO1984002682A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5071331A (en) * 1990-08-27 1991-12-10 Cabot Safety Corporation Mold for foam products
US5456586A (en) * 1993-07-07 1995-10-10 Carson; Scott Apparatus for manufacturing articles made of polyurethane

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127457A (en) * 1960-11-18 1964-03-31 Du Pont Method of molding a polyurethane foam in a mold having an improved release agent
US3248758A (en) * 1964-05-15 1966-05-03 Gen Electric Mold for the manufacture of polyurethane foam articles
US3576930A (en) * 1970-04-20 1971-04-27 Goodyear Tire & Rubber Method of preparing molded articles

Also Published As

Publication number Publication date
WO1984002682A1 (en) 1984-07-19
ES8605181A1 (en) 1986-04-01
ES539896A0 (en) 1986-04-01
ES8504013A1 (en) 1985-05-01
PT77935A (en) 1984-02-01
NO843546L (en) 1984-09-06
JPS60500409A (en) 1985-03-28
DK421884D0 (en) 1984-09-04
DK421884A (en) 1984-09-04
ES528686A0 (en) 1985-05-01
KR840007379A (en) 1984-12-07
IL70613A0 (en) 1984-04-30
FI840074A0 (en) 1984-01-09
EP0131037A1 (en) 1985-01-16

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