A covered stent and a preparation method thereof. The covered stent includes an inner-layer membrane, an outer-layer membrane, and a supporting framework located between the inner-layer membrane and the outer-layer membrane. The areas of the inner-layer membrane and the outer-layer membrane in supporting framework grids are mutually bonded. No extra adhesive is introduced into the covered stent, subsequent heating and melting are not needed to bond the inner-layer membrane and the outer-layer membrane of the supporting framework, and the covered stent has the advantages of being thin in membrane, small in pressing and holding outer diameter, high in bonding strength of the inner-layer membrane and the outer-layer membrane, good in mechanical property of the membranes and the like.

A covered stent and a preparation method thereof. The covered stent includes an inner-layer membrane, an outer-layer membrane, and a supporting framework located between the inner-layer membrane and the outer-layer membrane. The areas of the inner-layer membrane and the outer-layer membrane in supporting framework grids are mutually bonded. No extra adhesive is introduced into the covered stent, subsequent heating and melting are not needed to bond the inner-layer membrane and the outer-layer membrane of the supporting framework, and the covered stent has the advantages of being thin in membrane, small in pressing and holding outer diameter, high in bonding strength of the inner-layer membrane and the outer-layer membrane, good in mechanical property of the membranes and the like.

The invention relates to fluorine-free hydrophobic and oleophobic nonwoven for use, for example, in automotive engine bays, and a method for making such nonwoven.

The invention relates to fluorine-free hydrophobic and oleophobic nonwoven for use, for example, in automotive engine bays, and a method for making such nonwoven.

Provided is a fiber sheet having elasticity. The fiber sheet (10) includes at least: a first fiber layer (1) containing crimped fibers each having a coil shape, the first fiber layer (1) having repetitive elasticity in a longitudinal direction of the fiber sheet; and a second fiber layer (2) containing elastomeric fibers. The second fiber layer (2) is integrated with the first fiber layer (1) by fusion or adhesion in a specific thickness ratio therebetween.

Provided is a fiber sheet having elasticity. The fiber sheet (10) includes at least: a first fiber layer (1) containing crimped fibers each having a coil shape, the first fiber layer (1) having repetitive elasticity in a longitudinal direction of the fiber sheet; and a second fiber layer (2) containing elastomeric fibers. The second fiber layer (2) is integrated with the first fiber layer (1) by fusion or adhesion in a specific thickness ratio therebetween.

Herein is described a carbon fiber and glass fiber hybrid fabric having a total areal weight of less than about 500 g/m.sup.2.

Herein is described a carbon fiber and glass fiber hybrid fabric having a total areal weight of less than about 500 g/m.sup.2.

A cleaning article defining an XY plane and a Z direction perpendicular to the plane. The cleaning article has discrete tufts of tow fibers disposed on a carrier sheet. The discrete tufts have bond lines external to the tufts. The bond lines interrupt the Z-direction thickness of the tufts, to provide channels for improved collection and retention of debris from a target surface.

A cleaning article defining an XY plane and a Z direction perpendicular to the plane. The cleaning article has discrete tufts of tow fibers disposed on a carrier sheet. The discrete tufts have bond lines external to the tufts. The bond lines interrupt the Z-direction thickness of the tufts, to provide channels for improved collection and retention of debris from a target surface.