Back to results
US 4,392,903 AGranted
Process for making a thermal-insulating nonwoven bulky product
AssigneeToray Industries, Inc.
InventorsTadakazu Endo, Hirotsugu Suzuki, Masanori Takahashi
Life of this patent
Estimating the term…
Abstract
A process for producing thermal-insulating nonwoven bulky product characterized by its structural make up of substantially continuous single filaments of from about 0.01 to 2 denier which are stabilized on themselves in the product by a surface binder on the filaments.
Claims5
A process for producing a thermal insulating nonwoven bulky product the steps which comprise
- (a) spinning the filaments of a synthetic polymer under fluid pressure,
- (b) releasing the spun filaments together with fluid at high velocity for crimping and separating,
- (c) crimping and separating the filaments,
- (d) spraying the crimped and separated filaments with a binder,
- (e) spreading out and accumulating the separated filaments into layers, and
- (f) heating the layered filaments to the final product.
3 more elements
Dependencies are inferred from the claim text.