Back to results
US 2008/0166938 A1Published application
Microfiber split film filter felt and method of making same
AssigneeTeadit Industria E Comercio Ltda.
InventorsMarcello Cattaneo ADORNO, Jose Antonio de Almeida NETO
Life of this patent
Estimating the term…
Abstract
A nonwoven felt formed from fluoropolymer film, which is split and fibrillated to form a network structure, and then entangled.
Claims22
A nonwoven material comprising:
- a web of fluoropolymer film material from uniaxially stretched fibrillated film split in a lengthwise direction to form a network structure;
- wherein the material is formed into a batt without cutting, and wherein the material is entangled.
A method for producing a nonwoven material from film split into microfibers comprising the steps of:
- (a) forming a film;
- (b) splitting the film to form a network of fibers;
- (c) forming a batt from the film without cutting it into network of fibers;
- and
- (d) entangling the batt.
2 more elements
Dependencies are inferred from the claim text.