FR2414996A1 - Procede pour eliminer la densification de la base des blocs de mousse de polyurethane pendant leur fabrication - Google Patents

Procede pour eliminer la densification de la base des blocs de mousse de polyurethane pendant leur fabrication

Info

Publication number
FR2414996A1
FR2414996A1 FR7900122A FR7900122A FR2414996A1 FR 2414996 A1 FR2414996 A1 FR 2414996A1 FR 7900122 A FR7900122 A FR 7900122A FR 7900122 A FR7900122 A FR 7900122A FR 2414996 A1 FR2414996 A1 FR 2414996A1
Authority
FR
France
Prior art keywords
base
foam
block
tunnel
polyurethane foam
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.)
Granted
Application number
FR7900122A
Other languages
English (en)
Other versions
FR2414996B1 (fr
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.)
TECFOAM SA
Original Assignee
TECFOAM SA
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 ES466102A external-priority patent/ES466102A1/es
Priority claimed from ES473730A external-priority patent/ES473730A2/es
Application filed by TECFOAM SA filed Critical TECFOAM SA
Publication of FR2414996A1 publication Critical patent/FR2414996A1/fr
Application granted granted Critical
Publication of FR2414996B1 publication Critical patent/FR2414996B1/fr
Granted 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)
  • Laminated Bodies (AREA)

Abstract

Dans ce procédé de production de blocs de mousse de polyuréthane, on établît trois niveaux de température différents pour la base de bloc en formation : une température de réaction TR dans la partie amont du tunnel de formation de mousse, correspondant au gonflement de la mousse, une température de consolidation Tc un peu supérieure à TR dans la partie aval du tunnel, et, en aval de ce tunnel dans une ou plusieurs zones de séchage S1 , S2 , S3 , une température de séchage nettement supérieure à TR et TC . Sous cet effet, la mousse se dilate également dans la base du bloc, et la couche superficielle inférieure du bloc se soude à la bande de papier qui défile avec la mousse, et est extraite avec cette bande en laissant à la base du bloc une surface lisse et uniforme. Ce procédé supprime la production de mousse densifiée à la base du bloc, d'où un gain important de productivité
FR7900122A 1978-01-18 1979-01-03 Procede pour eliminer la densification de la base des blocs de mousse de polyurethane pendant leur fabrication Granted FR2414996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES466102A ES466102A1 (es) 1978-01-18 1978-01-18 Procedimiento para eliminar la densificacion de la zona del fondo en la fabricacion de bloques de espuma de poliuretano.
ES473730A ES473730A2 (es) 1978-09-28 1978-09-28 Mejoras introducidas en el objeto de la patente principal por procedimiento para eliminar la densificacion de la zona del fondo en la fabricacion de bloques de espuma de poliure-tano.

Publications (2)

Publication Number Publication Date
FR2414996A1 true FR2414996A1 (fr) 1979-08-17
FR2414996B1 FR2414996B1 (fr) 1983-11-18

Family

ID=26155941

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7900122A Granted FR2414996A1 (fr) 1978-01-18 1979-01-03 Procede pour eliminer la densification de la base des blocs de mousse de polyurethane pendant leur fabrication

Country Status (18)

Country Link
AT (1) AT381277B (fr)
AU (1) AU521610B2 (fr)
BR (1) BR7900294A (fr)
CA (1) CA1130523A (fr)
CH (1) CH635028A5 (fr)
DE (1) DE2900525A1 (fr)
DK (1) DK153303C (fr)
FI (1) FI783792A (fr)
FR (1) FR2414996A1 (fr)
GB (1) GB2012657B (fr)
GR (1) GR63066B (fr)
IT (1) IT1114302B (fr)
MX (1) MX150391A (fr)
NL (1) NL7900372A (fr)
NO (1) NO790027L (fr)
PT (1) PT69056A (fr)
SE (1) SE420582B (fr)
YU (1) YU7479A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508813A1 (de) * 1974-02-28 1975-10-23 Policastilla Verfahren zur kontinuierlichen herstellung eines blockes aus expandierten zellenfoermigem material mit kreisquerschnitt und variablem durchmesser
FR2322718A1 (fr) * 1975-09-16 1977-04-01 Policastilla Dispositif perfectionne pour la fabrication continue de blocs de matiere cellulaire expansee de section circulaire
DE2722841A1 (de) * 1976-05-24 1977-12-08 Roday Espumaciones Ind Verfahren zur minimierung der verdichteten umfangsflaechenbereiche von bloecken aus biegsamen polyurethan-schaumstoffen
EP0001772A1 (fr) * 1977-10-29 1979-05-16 Bayer Ag Procédé et dispositif pour la fabrication en continu de blocs de matière cellulaire

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2517664C3 (de) * 1975-04-22 1981-06-19 Metzeler Schaum Gmbh, 8940 Memmingen Verfahren zur kontinuierlichen Herstellen von rechteckigen Schaumstoffblöcken

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2508813A1 (de) * 1974-02-28 1975-10-23 Policastilla Verfahren zur kontinuierlichen herstellung eines blockes aus expandierten zellenfoermigem material mit kreisquerschnitt und variablem durchmesser
FR2322718A1 (fr) * 1975-09-16 1977-04-01 Policastilla Dispositif perfectionne pour la fabrication continue de blocs de matiere cellulaire expansee de section circulaire
DE2722841A1 (de) * 1976-05-24 1977-12-08 Roday Espumaciones Ind Verfahren zur minimierung der verdichteten umfangsflaechenbereiche von bloecken aus biegsamen polyurethan-schaumstoffen
EP0001772A1 (fr) * 1977-10-29 1979-05-16 Bayer Ag Procédé et dispositif pour la fabrication en continu de blocs de matière cellulaire

Also Published As

Publication number Publication date
FI783792A (fi) 1979-07-19
BR7900294A (pt) 1979-08-14
IT1114302B (it) 1986-01-27
FR2414996B1 (fr) 1983-11-18
CA1130523A (fr) 1982-08-31
GR63066B (en) 1979-08-06
DE2900525A1 (de) 1979-07-19
SE7900266L (sv) 1979-07-19
AU521610B2 (en) 1982-04-22
NO790027L (no) 1979-07-19
DK153303B (da) 1988-07-04
NL7900372A (nl) 1979-07-20
AU4278978A (en) 1979-07-26
MX150391A (es) 1984-04-30
DE2900525C2 (fr) 1988-03-31
PT69056A (en) 1979-02-01
DK153303C (da) 1988-11-14
CH635028A5 (de) 1983-03-15
SE420582B (sv) 1981-10-19
YU7479A (en) 1982-10-31
GB2012657A (en) 1979-08-01
IT7947543A0 (it) 1979-01-05
AT381277B (de) 1986-09-25
GB2012657B (en) 1982-03-31
DK21979A (da) 1979-07-19
ATA937278A (de) 1986-02-15

Similar Documents

Publication Publication Date Title
SU655296A3 (ru) Способ непрерывного изготовлени полимерных пенных блоков
BG28410A3 (en) Method and apparatus for production of glass fibers
US3552654A (en) Irrigation conduit and composition and method for producing such
ES454529A1 (es) Procedimiento para la obtencion de copolimeros de polisilo- xano-polioxialquileno.
ES453106A1 (es) Aparato para la produccion de una longitud continua de mate-rial celular polimerico.
FR2414996A1 (fr) Procede pour eliminer la densification de la base des blocs de mousse de polyurethane pendant leur fabrication
US934214A (en) Method of producing artificial lace fabric and the like.
GB661492A (en) A cylinder machine for making asbestos-cement and like webs
US3477646A (en) Scarfing unit
FR2443918A1 (fr) Masque facial jetable et procede d'obtention
US3281894A (en) Manufacture of expanded cellular products
NO900210D0 (no) Fremgangsmaate til fremstilling av lateksskummateriale.
USRE18844E (en) And sherman q
JPS6056602B2 (ja) 継ぎ目のないポリオレフイン泡状プラスチツク帯の製造方法
US1163605A (en) Art of converting molten slag into a highly-porous mass.
SU90804A1 (ru) Производство пеностекла и пеностеклокерамики
JPS6476978A (en) Production of porous ceramic board
GB1508468A (en) Apparatus for the continuous manufacture of expanded cellular material blocks of a circular cross-section
US1590819A (en) Apparatus and process for making sheet glass
GB1439805A (en) Method of manufacturing foamed thermoplastic resins
US2464858A (en) Apparatus for the preparation of porous slags or other smelts
US1860739A (en) Kiln for the production of cellular building material
ES8303258A1 (es) Metodo para la fabricacion en continuo de una cinta de vidrio plano, y dispositivo para su puesta en practica.
SU90792A1 (ru) Машина дл формовани пористых камней из огненно-жидких шлаков
FR2133485A3 (en) Moulding plastic web - passing from extruder by forming reserve between mould and extruder

Legal Events

Date Code Title Description
ST Notification of lapse