ES398763A1 - Process and apparatus for producing blocks of cellular plastics material - Google Patents

Process and apparatus for producing blocks of cellular plastics material

Info

Publication number
ES398763A1
ES398763A1 ES398763A ES398763A ES398763A1 ES 398763 A1 ES398763 A1 ES 398763A1 ES 398763 A ES398763 A ES 398763A ES 398763 A ES398763 A ES 398763A ES 398763 A1 ES398763 A1 ES 398763A1
Authority
ES
Spain
Prior art keywords
plastic material
plastics material
cellular plastics
producing blocks
foams
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.)
Expired
Application number
ES398763A
Other languages
Spanish (es)
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.)
Continental AG
Original Assignee
Continental Gummi Werke 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
Priority claimed from DE19712101238 external-priority patent/DE2101238C3/en
Application filed by Continental Gummi Werke AG filed Critical Continental Gummi Werke AG
Publication of ES398763A1 publication Critical patent/ES398763A1/en
Expired 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
    • B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
    • 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
    • B29C44/005—Avoiding skin formation; Making foams with porous surfaces
    • 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
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/467—Foam spreading or levelling devices
    • 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
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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
    • B29C37/006—Degassing moulding material or draining off gas during moulding
    • 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
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Procedure for the manufacture of blocks of foams of plastic material, especially of foams of polyurethane plastic material, by foaming of masses of plastic material containing growth-promoting means or capable of swelling in open upper molds characterized in that, in the region of In the marginal areas of the surface of the block in the formation of foam material, an underpressure is applied, acting in the upward direction. (Machine-translation by Google Translate, not legally binding)
ES398763A 1971-01-12 1972-01-11 Process and apparatus for producing blocks of cellular plastics material Expired ES398763A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712101238 DE2101238C3 (en) 1971-01-12 Method and device for the production of foam blocks with a flat surface in open molds

Publications (1)

Publication Number Publication Date
ES398763A1 true ES398763A1 (en) 1975-05-01

Family

ID=5795673

Family Applications (1)

Application Number Title Priority Date Filing Date
ES398763A Expired ES398763A1 (en) 1971-01-12 1972-01-11 Process and apparatus for producing blocks of cellular plastics material

Country Status (8)

Country Link
AT (1) AT335168B (en)
BE (1) BE777216A (en)
DK (1) DK134889C (en)
ES (1) ES398763A1 (en)
FR (1) FR2121520B1 (en)
GB (1) GB1380645A (en)
IT (1) IT946463B (en)
NL (1) NL7118216A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU170123B (en) * 1975-05-29 1977-04-28
DE3842625C1 (en) * 1988-12-17 1990-05-31 Bayer Ag, 5090 Leverkusen, De
BE1004588A3 (en) * 1990-09-14 1992-12-15 Recticel Process for the production of flexible polyurethane foam.
CN110789049B (en) * 2019-12-10 2024-10-11 杭州塑团机械有限公司 Mould moving system of foam plastic machine

Also Published As

Publication number Publication date
FR2121520B1 (en) 1974-07-05
NL7118216A (en) 1972-07-14
FR2121520A1 (en) 1972-08-25
DK134889C (en) 1977-06-27
BE777216A (en) 1972-01-14
ATA19872A (en) 1976-06-15
AT335168B (en) 1977-02-25
IT946463B (en) 1973-05-21
DE2101238A1 (en) 1972-07-27
DE2101238B2 (en) 1975-11-13
DK134889B (en) 1977-02-07
GB1380645A (en) 1975-01-15

Similar Documents

Publication Publication Date Title
CA998812A (en) Apparatus and process for making low density thermoplastic foam
AU450719B2 (en) Process for preparing substantially nonlustrous open pore polyurethane foams in situ and foam prepared therefrom
GB835679A (en) Method of and means for the continuous production of strips or slabs of porous material
CA1011906A (en) Process and apparatus for producing foam plastics blocks
ZA765305B (en) Process and apparatus for the packaging of blocks of foamed plastics(plastic foam)
ATE42962T1 (en) PROCESS FOR MAKING CROSSLINKED CLOSED-CELL POLYOLEFIN FOAM PARTS.
ES403654A1 (en) Manufacture of resilient compound foams
ES194342U (en) Made of perfect machine for the manufacture of bodies of sparkling plastic material. (Machine-translation by Google Translate, not legally binding)
JPS56133142A (en) Manufacture of mold for molding plastic foaming product
CA930515A (en) Method of producing closed mold polyurethane foam moldings free of surface voids
ES393703A1 (en) Foamable thermoplastic compositions
ES426706A1 (en) Moulding of plastics foam
GB1324501A (en) Moulding process for polyurethane rigid foam
ES379027A1 (en) A process and apparatus for making a cellular product
ES375436A1 (en) Method of producing moulded articles
GB1508468A (en) Apparatus for the continuous manufacture of expanded cellular material blocks of a circular cross-section
ES426817A1 (en) Composite foams
GB762360A (en) Improvements in or relating to machines for moulding soil blocks
ES323857A1 (en) Procedure to obtain cellular articles of polyurethane resin. (Machine-translation by Google Translate, not legally binding)
BE786847Q (en) Injection mould of foam plastics
ES452223A1 (en) Method and apparatus for filling a mould of a foaming machine with foamable plastics
ES432743A3 (en) Procedure for the continuous manufacture of bars of sponjoso soft material. (Machine-translation by Google Translate, not legally binding)
ES315618A1 (en) A procedure to modify foamed polystrene materials. (Machine-translation by Google Translate, not legally binding)
CA891578A (en) Process and apparatus for the production of foam plastics materials in particular polyurethane foams
AU3879572A (en) Method of and apparatus for producing foamed plastic material