Title:
【発明の名称】所定の圧力範囲内でポリウレタンフォームスラブ素材を連続的に製造する方法と装置
Document Type and Number:
Japanese Patent JP3186060
Kind Code:
B2
Abstract:
Slabstock polyurethane foam prepn. comprises prepg. a polymerisable mixt. contg. a blowing agent applying the reaction mixt. onto a moving conveyor, and allowing a free rise expansion and polymerisation of the mixt. within a hermetically closed space. The pressure within the space is maintained within the predetermined pressure range by continuously supplying gas into the space, in addn. to the blowing gas prodn. and by simultaneously exhausting gas from the space. Pref. the device comprises a continuous foam producing machine in a hermetical enclosure. The machine comprises a mixing head connected to a trough by a duct, a fall-late section and a first conveyor belt. A film feed unit is provided either inside the enclosure or in a separate enclosure. The film delivered by the unit runs over the section and the belt and is rewinded on the unit. Side feed unit and rewind unit are also provided. The device further comprises a foam block cut off unit mounted above a further conveyor belt located after the conveyor belt inside enclosure. The enclosure is pref. divided into at least two compartments respectively, a process enclosure and airlock enclosure, by a hermetical partition door.
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Inventors:
Blackwell, brian james
Jurkin, Lucian
Delxen, Johannes A.M.G.
Mortelman, Rudy
Jurkin, Lucian
Delxen, Johannes A.M.G.
Mortelman, Rudy
Application Number:
JP51866591A
Publication Date:
July 11, 2001
Filing Date:
November 14, 1991
Export Citation:
Assignee:
Preform Actien Gezel Shaft
International Classes:
B29C44/54; B29C39/14; B29C39/16; B29C39/18; B29C39/22; B29C44/00; B29C44/10; B29C44/28; B29C44/60; B29C67/20; C08J9/04; B29K75/00; B29K105/04; (IPC1-7): B29C39/14
Domestic Patent References:
| JP63160809A | ||||
| JP63172625A | ||||
| JP60907A |
Attorney, Agent or Firm:
Akira Asamura (3 outside)