RO83528B - Process for shaping freely expanded polymer surface in one step from liquid mixtures - Google Patents

Process for shaping freely expanded polymer surface in one step from liquid mixtures

Info

Publication number
RO83528B
RO83528B RO86268A RO8626876A RO83528B RO 83528 B RO83528 B RO 83528B RO 86268 A RO86268 A RO 86268A RO 8626876 A RO8626876 A RO 8626876A RO 83528 B RO83528 B RO 83528B
Authority
RO
Romania
Prior art keywords
liquid mixtures
shaping
polymer surface
expanded polymer
freely expanded
Prior art date
Application number
RO86268A
Other languages
Romanian (ro)
Other versions
RO83528A (en
Inventor
Bekefi Otto
Kadar Karoly
Kacsmarik Laszlo
Lako Lajos
Salamon Zoltan
Toth Sandor
Original Assignee
Eszamagyarorszagi Vagyimiivek
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 Eszamagyarorszagi Vagyimiivek filed Critical Eszamagyarorszagi Vagyimiivek
Publication of RO83528B publication Critical patent/RO83528B/en
Publication of RO83528A publication Critical patent/RO83528A/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
    • B29C44/36—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)
  • Polyurethanes Or Polyureas (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)

Abstract

Procedeul de formare a suprafetei polimerilor expandati liber într-o treapta din amestecuri de lichide caracterizat prin aceea ca în scopul usurarii realizarii pe suprProcedeu de formare a suprafetei polimerilor, conform caruia pe suprafata polimerului ce urmeaza a fi spumat se mentine perpendicular pe peretii înconjuratori cu curent fortat de substanta gazpasa, de preferinta aer. Procedeul este utilizat în industria materialelor plastice.The process for forming the surface of the free-flowing polymers in a stage of liquid mixtures characterized in that, in order to facilitate the process of the surface polymerization process, according to which on the surface of the polymer to be foamed it is kept perpendicular to the surrounding walls with current forced by the gaseous substance, preferably air. The process is used in the plastics industry.

RO7686268A 1975-05-29 1976-05-26 PROCESS FOR FORMING THE SURFACE OF FREELY EXPANDED POLYMERS IN A STEP OF LILATE MIXTURES FREE IN A STEP OF LIQUID LIQUID MIXTURES RO83528A (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
RO83528B true RO83528B (en) 1984-10-30
RO83528A RO83528A (en) 1985-10-31

Family

ID=10995098

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7686268A RO83528A (en) 1975-05-29 1976-05-26 PROCESS FOR FORMING THE SURFACE OF FREELY EXPANDED POLYMERS IN A STEP OF LILATE MIXTURES FREE IN A STEP OF LIQUID LIQUID MIXTURES

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) FI761394A7 (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
NL286346A (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
NL7605218A (en) 1976-12-01
BE842140A (en) 1976-09-16
AU500938B2 (en) 1979-06-07
HU170123B (en) 1977-04-28
BR7603100A (en) 1977-02-15
SE7605407L (en) 1976-11-30
AU1385976A (en) 1977-11-24
CH595971A5 (en) 1978-02-28
PT65131A (en) 1976-06-01
RO83528A (en) 1985-10-31
FI761394A7 (en) 1976-11-30
GR59908B (en) 1978-03-16
SU668615A3 (en) 1979-06-15
JPS5428193B2 (en) 1979-09-14
JPS5211268A (en) 1977-01-28
NO761822L (en) 1976-11-30
IT1061717B (en) 1983-04-30
ES448306A1 (en) 1977-11-01
FR2312357A1 (en) 1976-12-24
LU74965A1 (en) 1977-01-18
DK235176A (en) 1976-11-30
DE2620084A1 (en) 1976-12-02
PL101732B1 (en) 1979-01-31
PT65131B (en) 1977-10-11

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