ES486104A1 - Un procedimiento mejorado para moldear continuamente espuma de poliuretano - Google Patents

Un procedimiento mejorado para moldear continuamente espuma de poliuretano

Info

Publication number
ES486104A1
ES486104A1 ES486104A ES486104A ES486104A1 ES 486104 A1 ES486104 A1 ES 486104A1 ES 486104 A ES486104 A ES 486104A ES 486104 A ES486104 A ES 486104A ES 486104 A1 ES486104 A1 ES 486104A1
Authority
ES
Spain
Prior art keywords
mold
side walls
divergent
polyurethane foam
continuous casting
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
ES486104A
Other languages
English (en)
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.)
Reeves Brothers Inc
Original Assignee
Reeves Brothers Inc
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 US05/962,166 external-priority patent/US4207279A/en
Application filed by Reeves Brothers Inc filed Critical Reeves Brothers Inc
Publication of ES486104A1 publication Critical patent/ES486104A1/es
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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/26—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length using several expanding steps
    • 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
    • B29C44/461—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface
    • B29C44/462—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length dispensing apparatus, e.g. dispensing foaming resin over the whole width of the moving surface provided with pre-foaming devices

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Molding Of Porous Articles (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

Un procedimiento mejorado para moldear continuamente espuma de poliuretano capaz de hincharse espontáneamente en un molde abierto por la parte superior y que se traslada lateralmente a una velocidad dada del transportador de fondo por deposición de una mezcla de reactivos formadora de espuma de poliuretano a una velocidad de alimentación dada sobre un tablero de vertido, en el que la mejora comprende incrementar la altura del producto de espuma de poliuretano flexible moldeado obtenido (i) depositando dicha mezcla de reactivos formadora de espuma de poliuretano cerca del vértice de una primera porción de molde del molde que se traslada lateralmente, teniendo dicha primera porción de dicho molde que se traslada lateralmente primeras paredes laterales divergentes que forman un ángulo entre ellas mayor que aproximadamente 10º y menor que aproximadamente 120º y que se unen, en sus extremos, con las segundas paredes laterales paralelas de una segunda porción de dicho molde que se traslada y (ii)dejando que dicha mezcla de reactivos formadora de espuma de poliuretano compete sustancialmente su subida después de atravesar dicha primera porción del molde que se traslada.
ES486104A 1978-11-20 1979-11-19 Un procedimiento mejorado para moldear continuamente espuma de poliuretano Expired ES486104A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/962,166 US4207279A (en) 1977-05-03 1978-11-20 Process and apparatus for continuous production of polyurethane foam

Publications (1)

Publication Number Publication Date
ES486104A1 true ES486104A1 (es) 1980-10-01

Family

ID=25505502

Family Applications (2)

Application Number Title Priority Date Filing Date
ES486104A Expired ES486104A1 (es) 1978-11-20 1979-11-19 Un procedimiento mejorado para moldear continuamente espuma de poliuretano
ES492926A Expired ES8102902A1 (es) 1978-11-20 1980-06-30 Un aparato mejorado para producir espuma de poliuretano ca- paz de hincharse espontaneamente

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES492926A Expired ES8102902A1 (es) 1978-11-20 1980-06-30 Un aparato mejorado para producir espuma de poliuretano ca- paz de hincharse espontaneamente

Country Status (24)

Country Link
JP (1) JPS5571536A (es)
AR (1) AR221119A1 (es)
AU (1) AU531575B2 (es)
BE (1) BE880113A (es)
BR (1) BR7907493A (es)
CA (1) CA1142314A (es)
CH (1) CH632446A5 (es)
DE (1) DE2946396A1 (es)
DK (1) DK491979A (es)
ES (2) ES486104A1 (es)
FI (1) FI793618A7 (es)
FR (1) FR2441480A1 (es)
GB (1) GB2035887B (es)
GR (1) GR72930B (es)
IE (1) IE48877B1 (es)
IN (1) IN153400B (es)
IT (1) IT1119506B (es)
MX (1) MX151491A (es)
NL (1) NL7908419A (es)
NO (1) NO793602L (es)
NZ (1) NZ192115A (es)
PT (1) PT70450A (es)
SE (1) SE7909283L (es)
ZA (1) ZA796068B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363610A (en) * 1981-01-26 1982-12-14 Miller Foam Enterprises, Inc. Apparatus for continuously molding cylindrical blocks of foamed polymeric material
DK149223C (da) * 1983-08-12 1987-07-06 Hyma Engineering Aps Fremgangsmaade og anlaeg til fremstilling af produkter af polyurethanskum eller lignende
US4572865A (en) * 1983-12-05 1986-02-25 The Celotex Corporation Faced foam insulation board and froth-foaming method for making same
KR101966203B1 (ko) * 2017-09-08 2019-04-05 (주)디유티코리아 연속 발포 공정에 의한 다경도·다탄성 폼 매트리스의 제조방법
EP3482904A1 (de) * 2017-11-14 2019-05-15 Covestro Deutschland AG Variable vorrichtung und verfahren zum auftragen einer schäumbaren reaktionsmischung auf eine sich bewegende deckschicht

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR78595E (fr) * 1960-10-24 1962-08-10 Cie De Prod Chim Moulage de feuilles minces de résine cellulaire
US3278659A (en) * 1963-02-26 1966-10-11 Specialty Converters Method and apparatus for casting foam plastic sheets on a curved casting surface
US3560599A (en) * 1968-08-05 1971-02-02 Tenneco Chem Method of regulating the upper surface contour of polyurethane foam
DE2135672A1 (de) * 1971-07-16 1973-02-01 Bayer Ag Vorrichtung zum kontinuierlichen herstellen einer schaumstoffblockbahn mit rechteckigem querschnitt
GB1564604A (en) * 1975-11-07 1980-04-10 Unifoam Ag Manufacture of polymeric foam
DE2231084A1 (de) * 1972-06-24 1974-01-03 Hennecke Gmbh Maschf Vorrichtung zum kontinuierlichen herstellen von schaumstoffbloecken
ES215157Y (es) * 1975-09-16 1976-12-01 Policastilla, S. A. Dispositivo perfeccionado para la fabricacion continua de bloques de material celular expandido con seccion circular.

Also Published As

Publication number Publication date
ES492926A0 (es) 1981-02-16
IT1119506B (it) 1986-03-10
IE792176L (en) 1980-05-20
NL7908419A (nl) 1980-05-22
BR7907493A (pt) 1980-07-08
SE7909283L (sv) 1980-05-21
AU5298179A (en) 1980-05-29
BE880113A (fr) 1980-05-19
AR221119A1 (es) 1980-12-30
NZ192115A (en) 1981-05-29
JPS5571536A (en) 1980-05-29
IN153400B (es) 1984-07-14
PT70450A (en) 1979-12-01
AU531575B2 (en) 1983-09-01
NO793602L (no) 1980-05-21
DE2946396A1 (de) 1980-05-29
MX151491A (es) 1984-12-04
GR72930B (es) 1984-01-12
DK491979A (da) 1980-05-21
FR2441480A1 (fr) 1980-06-13
GB2035887B (en) 1982-11-03
FR2441480B1 (es) 1984-03-16
GB2035887A (en) 1980-06-25
IT7969240A0 (it) 1979-11-19
FI793618A7 (fi) 1981-01-01
IE48877B1 (en) 1985-06-12
CA1142314A (en) 1983-03-08
ES8102902A1 (es) 1981-02-16
CH632446A5 (fr) 1982-10-15
ZA796068B (en) 1980-10-29

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