ES448306A1 - Process for shaping polymer surface - Google Patents

Process for shaping polymer surface

Info

Publication number
ES448306A1
ES448306A1 ES448306A ES448306A ES448306A1 ES 448306 A1 ES448306 A1 ES 448306A1 ES 448306 A ES448306 A ES 448306A ES 448306 A ES448306 A ES 448306A ES 448306 A1 ES448306 A1 ES 448306A1
Authority
ES
Spain
Prior art keywords
polymer surface
shaping polymer
shaping
foaming
translation
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
ES448306A
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.)
ESZAKMAGYARORSZAGI BEGYMUVEK
Original Assignee
ESZAKMAGYARORSZAGI BEGYMUVEK
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 ESZAKMAGYARORSZAGI BEGYMUVEK filed Critical ESZAKMAGYARORSZAGI BEGYMUVEK
Publication of ES448306A1 publication Critical patent/ES448306A1/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
    • B29C44/58—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
    • B29C44/36—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

Landscapes

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

Abstract

Process for the surface shaping of polymers, prepared from liquid mixtures by free foaming in a single step, characterized in that a gas, preferably air, is maintained in forced flow along the surface of the foaming polymer, perpendicular to the confining walls . (Machine-translation by Google Translate, not legally binding)
ES448306A 1975-05-29 1976-05-28 Process for shaping polymer surface Expired ES448306A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEA147A HU170123B (en) 1975-05-29 1975-05-29

Publications (1)

Publication Number Publication Date
ES448306A1 true ES448306A1 (en) 1977-11-01

Family

ID=10995098

Family Applications (1)

Application Number Title Priority Date Filing Date
ES448306A Expired ES448306A1 (en) 1975-05-29 1976-05-28 Process for shaping polymer surface

Country Status (21)

Country Link
JP (1) JPS5211268A (en)
AU (1) AU500938B2 (en)
BE (1) BE842140A (en)
BR (1) BR7603100A (en)
CH (1) CH595971A5 (en)
DE (1) DE2620084A1 (en)
DK (1) DK235176A (en)
ES (1) ES448306A1 (en)
FI (1) FI761394A (en)
FR (1) FR2312357A1 (en)
GR (1) GR59908B (en)
HU (1) HU170123B (en)
IT (1) IT1061717B (en)
LU (1) LU74965A1 (en)
NL (1) NL7605218A (en)
NO (1) NO761822L (en)
PL (1) PL101732B1 (en)
PT (1) PT65131B (en)
RO (1) RO83528A (en)
SE (1) SE7605407L (en)
SU (1) SU668615A3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE625615A (en) * 1961-12-05
US3240846A (en) * 1962-08-06 1966-03-15 Allied Chem Method and apparatus for preparing polyurethane foam sandwich structure
BE718157A (en) * 1967-07-18 1968-12-31
BE777216A (en) * 1971-01-12 1972-01-14 Continental Gummi Werke Ag METHOD AND DEVICE FOR MANUFACTURING BLOCKS FROM FLAT SURFACE MOUSSEA MATERIAL IN OPEN MOLDS

Also Published As

Publication number Publication date
FR2312357A1 (en) 1976-12-24
RO83528B (en) 1984-10-30
GR59908B (en) 1978-03-16
HU170123B (en) 1977-04-28
JPS5428193B2 (en) 1979-09-14
FI761394A (en) 1976-11-30
SU668615A3 (en) 1979-06-15
PL101732B1 (en) 1979-01-31
DK235176A (en) 1976-11-30
RO83528A (en) 1985-10-31
DE2620084A1 (en) 1976-12-02
LU74965A1 (en) 1977-01-18
JPS5211268A (en) 1977-01-28
AU1385976A (en) 1977-11-24
PT65131B (en) 1977-10-11
BR7603100A (en) 1977-02-15
PT65131A (en) 1976-06-01
AU500938B2 (en) 1979-06-07
CH595971A5 (en) 1978-02-28
NL7605218A (en) 1976-12-01
NO761822L (en) 1976-11-30
SE7605407L (en) 1976-11-30
BE842140A (en) 1976-09-16
IT1061717B (en) 1983-04-30

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