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1. (WO1979000734) METHOD AND APPARATUS FOR SCATTERING POLYURETHANE FOAMABLE MIXTURE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000734 International Application No.: PCT/JP1979/000054
Publication Date: 04.10.1979 International Filing Date: 07.03.1979
IPC:
B29C 44/48 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
44
Shaping by internal pressure generated in the material, e.g. swelling, foaming
34
Component parts, details or accessories; Auxiliary operations
36
Feeding the material to be shaped
46
into an open space or onto moving surfaces, i.e. to make articles of indefinite length
48
by gravity, e.g. casting onto, or between, moving surfaces
Applicants:
Inventors:
Priority Data:
78/2663310.03.1978JP
Title (EN) METHOD AND APPARATUS FOR SCATTERING POLYURETHANE FOAMABLE MIXTURE
(FR) METHODE ET APPAREIL DE DISPERSION D"UN MELANGE MOUSSANT DE POLYURETHANE
Abstract:
(EN) There is disclosed a method and apparatus for scattering a foamable mixture capable of forming polyurethane foam. Foamable mixture is uniformly and transversely scattered on a moving surface to thereby provide a uniform layer of the foamable mixture over the whole area of the moving surface. The foamable mixture is first fed to and spread over first surfaces and then scattered from the first surfaces to a second moving surface as fine particulates of foamable mixture. In practice, the foamable mixture (10) is fed to and spread over two spreader-rolls (1) and (2), i.e., the first surfaces, and then finely divided into particulates by two scatter-rolls (3) and (4) that each rotate in engagement with the associated spreader-rolls. The particulates of foamable mixture are then scattered on the moving surface. This process is useful for manufacturing laminate products having a sheet or layer of polyurethane foam.
(FR) Methode et appareil de dispersion d"un melange moussant capable de former une mousse de polyurethane. Un melange moussant est uniformement disperse sur une surface mobile pour obtenir une couche uniforme du melange moussant sur toute la surface mobile. Le melange moussant est premierement depose et reparti sur des premieres surfaces, puis disperse en passant des premieres surfaces sur une seconde surface mobile sous forme de fines particules de melange moussant. Dans la pratique, on alimente en melange moussant (10) deux cylindres d"etalement (1) et (2), par exemple, les premieres surfaces, sur lesquelles s"etale le melange moussant, puis il est divise en fines particules par deux cylindres de dispersion (3) et (4) qui tournent en association avec les cylindres d"etalement. Les particules de melange moussant sont ensuite dispersees sur la surface mobile. Ce procede est utile pour fabriquer des produits lamines ayant une feuille ou une couche de mousse de polyurethane.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
US4332281