Heat-resistant synthetic fiber sheet
AssigneeTeijin Techno Products Limited
InventorsTatsushi Fujimori, Sadamitsu Murayama
Life of this patent
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Abstract
A heat-resistant fiber paper-like sheet comprises 40 to 97% by mass of heat-resistant organic synthetic polymers staple fibers, 3 to 60% by mass of heat resistant organic synthetic polymer fibrid and or an organic resin binder, in a portion of the staple fibers, each staple fiber having two flat end faces having an inclining angle of 10 degrees or more from a plane crossing the fiber axis at a right angles, and is useful as a base material for laminate materials for electrical circuit boards.
Claims22
A heat-resistant synthetic fiber sheet comprising, as principal components, a plurality of staple fibers comprising a heat-resistant organic synthetic polymeric material and a binding member selected from the group consisting of (1) heat resistant organic synthetic polymer fibrids and (2) mixtures of the heat resistant organic synthetic polymer fibrids with organic resin binders, wherein,
- the plurality of staple fibers are bound to each other through the binding member, to form a paper-like sheet, the content of the staple fibers is in the range of 40 to 97% by mass on the basis of the total mass of the sheet, and the total content of the binding member is in a range of from 3 to 60% by mass on the basis of the total mass of the sheet, and at least a portion of the staple fibers each have two flat end faces at an angle of 10 degrees or more to a plane crossing the fiber axis of the staple fiber at right angles.
Dependencies are inferred from the claim text.