초록 ▼

A longitudinally stretched nonwoven fabric and a method for producing the same, which nonwoven fabric is a web mainly composed of long fiber filaments of 3 .mu.m to 15 .mu.m in diameter and made by short distance stretching in one direction at a stretching ratio of at least 5, and which production m

A longitudinally stretched nonwoven fabric and a method for producing the same, which nonwoven fabric is a web mainly composed of long fiber filaments of 3 .mu.m to 15 .mu.m in diameter and made by short distance stretching in one direction at a stretching ratio of at least 5, and which production method is characterized in the steps of: maintaining the spun filaments in a draftable state; cooling the filaments with a cooling fluid, then guiding the filaments onto a conveyer with inclining the flow of filaments toward the transferring direction, and sucking by a reduced pressure from the back side of said conveyer, and further subjecting the web of filaments to short distance stretching in the longitudinal direction.

대표청구항 ▼

[ What is claimed is:] [1.] A method of producing a longitudinally stretched nonwoven fabric of a web which consists of long fiber filaments of 3 .mu.m to 15 .mu.m in diameter and said filaments are formed by extruding a melted polymer with a spinning means having a plurality of fine nozzles and tak

[ What is claimed is:] [1.] A method of producing a longitudinally stretched nonwoven fabric of a web which consists of long fiber filaments of 3 .mu.m to 15 .mu.m in diameter and said filaments are formed by extruding a melted polymer with a spinning means having a plurality of fine nozzles and taking up said filaments at a high drafting ratio under the friction of a high speed fluid so as to accumulate said filaments on a conveyer, said method comprising the steps of:(a) maintaining said filaments upon being extruded from the nozzles in a melted state to be drafted;(b) thereafter cooling said filaments with a cooling fluid or an aqueous spray or cooling air;(c) guiding a flow of said cooled filaments onto a conveyer while inclining the filaments in a direction of transferring onto said conveyer;(d) forming a web by aspirating said filaments under a reduced pressure in a linear transverse direction from a side opposite a filament loading surface of said conveyer; and(e) subjecting said web to a short distance stretching in a longitudinal direction of said web at a stretching ratio of at least 5.