ES448190A1 - Procedimiento para reducir al minimo la densificacion de laszonas perifericas de bloques de espuma flexible de poliure- tano. - Google Patents

Procedimiento para reducir al minimo la densificacion de laszonas perifericas de bloques de espuma flexible de poliure- tano.

Info

Publication number
ES448190A1
ES448190A1 ES448190A ES448190A ES448190A1 ES 448190 A1 ES448190 A1 ES 448190A1 ES 448190 A ES448190 A ES 448190A ES 448190 A ES448190 A ES 448190A ES 448190 A1 ES448190 A1 ES 448190A1
Authority
ES
Spain
Prior art keywords
polyurethane foam
foam blocks
manufacture
peripheral portions
reaction
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
ES448190A
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.)
RODAY ESPUMACIONES IND
Original Assignee
RODAY ESPUMACIONES IND
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 RODAY ESPUMACIONES IND filed Critical RODAY ESPUMACIONES IND
Priority to ES448190A priority Critical patent/ES448190A1/es
Priority to GB9735/77A priority patent/GB1534824A/en
Priority to JP3145877A priority patent/JPS52145472A/ja
Priority to PT66487A priority patent/PT66487B/pt
Priority to IT49483/77A priority patent/IT1116446B/it
Priority to DE19772722841 priority patent/DE2722841A1/de
Priority to FR7715763A priority patent/FR2352855A1/fr
Publication of ES448190A1 publication Critical patent/ES448190A1/es
Priority to BE180626A priority patent/BE858339A/xx
Priority to US06/066,839 priority patent/US4275024A/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
    • B29C44/20—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
    • B29C44/28—Expanding the moulding material on continuous moving surfaces without restricting the upwards growth of the foam

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
ES448190A 1976-05-24 1976-05-24 Procedimiento para reducir al minimo la densificacion de laszonas perifericas de bloques de espuma flexible de poliure- tano. Expired ES448190A1 (es)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES448190A ES448190A1 (es) 1976-05-24 1976-05-24 Procedimiento para reducir al minimo la densificacion de laszonas perifericas de bloques de espuma flexible de poliure- tano.
GB9735/77A GB1534824A (en) 1976-05-24 1977-03-08 Manufacture of polyurethane foam blocks with reduced compacting of peripheral portions
JP3145877A JPS52145472A (en) 1976-05-24 1977-03-22 Process for minimize skin of polyurethane foam
PT66487A PT66487B (en) 1976-05-24 1977-04-28 Process for reducing to a minimum the densification of peripherical areas of continuous blocks in flexible polyurethane foam
IT49483/77A IT1116446B (it) 1976-05-24 1977-05-20 Procedimento per ridurre l'agglomeramento di zone periferiche in espansi di poliuretano pieghevole
DE19772722841 DE2722841A1 (de) 1976-05-24 1977-05-20 Verfahren zur minimierung der verdichteten umfangsflaechenbereiche von bloecken aus biegsamen polyurethan-schaumstoffen
FR7715763A FR2352855A1 (fr) 1976-05-24 1977-05-23 Procede perfectionne pour la fabrication de blocs de mousse de polyurethane
BE180626A BE858339A (fr) 1976-05-24 1977-09-01 Procede perfectionne pour la fabrication de blocs de mousse de polyurethanne
US06/066,839 US4275024A (en) 1976-05-24 1979-08-15 Process and apparatus for elimination of densified areas in blocks of pliable polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES448190A ES448190A1 (es) 1976-05-24 1976-05-24 Procedimiento para reducir al minimo la densificacion de laszonas perifericas de bloques de espuma flexible de poliure- tano.

Publications (1)

Publication Number Publication Date
ES448190A1 true ES448190A1 (es) 1977-08-01

Family

ID=8471629

Family Applications (1)

Application Number Title Priority Date Filing Date
ES448190A Expired ES448190A1 (es) 1976-05-24 1976-05-24 Procedimiento para reducir al minimo la densificacion de laszonas perifericas de bloques de espuma flexible de poliure- tano.

Country Status (8)

Country Link
JP (1) JPS52145472A (es)
BE (1) BE858339A (es)
DE (1) DE2722841A1 (es)
ES (1) ES448190A1 (es)
FR (1) FR2352855A1 (es)
GB (1) GB1534824A (es)
IT (1) IT1116446B (es)
PT (1) PT66487B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES475522A2 (es) * 1978-11-29 1979-08-16 Tecfoam Sa Mejoras introducidas en el objeto de la patente pirncipal sobre perfeccionamientos introducidos en una instalacion de bloques continuos de espuma de poliuretano carentes de costr
ES466951A1 (es) * 1978-02-14 1978-10-01 Tec Foam Sa Perfeccionamientos introducidos en una instalacion para la obtencion de bloques continuos de espuma de poliuretano ca- rentes de "costra" o capa de mayor densidad en su parte de fondo.
DE2748733A1 (de) * 1977-10-29 1979-05-10 5090 Leverkusen Verfahren und einrichtung zum kontinuierlichen herstellen von blockfoermigem schaumstoff
FI783792A7 (fi) * 1978-01-18 1979-07-19 Tecfoam Sa Foerfarande foer eliminering av en foertaetning av bottenpartiet vid framstaellning av polyuretanskumblock

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4966763A (es) * 1972-08-25 1974-06-28
JPS50126764A (es) * 1974-03-27 1975-10-06

Also Published As

Publication number Publication date
PT66487B (en) 1978-09-29
FR2352855A1 (fr) 1977-12-23
BE858339A (fr) 1978-01-02
JPS52145472A (en) 1977-12-03
PT66487A (en) 1977-05-01
DE2722841A1 (de) 1977-12-08
IT1116446B (it) 1986-02-10
GB1534824A (en) 1978-12-06

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