Process for producing thermosetting resin film

Details Process for producing thermosetting resin film Process for producing thermosetting resin film

1980-08-05

1982-08-24

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624427, 156289, 156330, B29D 702

Patent

active

043459595

ABSTRACT:
A non-solvent type thermosetting resin film exhibiting excellent uniformity in thickness is prepared by a process wherein a molten thermosetting resin composition having a curing agent incorporated therein is extruded through a linear slit of a flat die, maintained at a constant temperature, onto a release sheet continuously moving at a constant rate in close proximity to the exit end of the linear slit. As the flat die a flat sheeting die having a substantially circular manifold is used and the molten thermosetting resin is extruded onto the release sheet, which is supported by a back-up roll and confronts the exit end of the linear slit of the flat sheeting die.

REFERENCES:
patent: 3043738 (1962-07-01), Demeter et al.
patent: 3253073 (1966-05-01), Skobel
patent: 3600750 (1971-08-01), Stroszynski
patent: 3784433 (1974-01-01), Garnish et al.
patent: 4180608 (1979-12-01), Del

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