Nippon Filcon Co., Limited

Taketoshi Watanabe

Hiroyuki Nagura

Takuo Tate

Takehito Kuji

Tatsuhiko Yasuoka

An extendable and heat shrinkable polyamide monofilament which has an extension of 6% or more to a loading variation in the range of 1.25 g/d-1.75 g/d and a heat shrinkage factor of 7% or more on immersing said monofilament into boiling water. The recited polyamide monofilament is woven into a wear-resistant fabric such as a papermaking fabric.

Extendable and heat shrinkable polyamide mono-filament for endless

In a single-layer paper making woven fabric of more than five shafts, auxiliary wefts each having a smaller diameter than that of the primary wefts are disposed between each of the primary wefts. Each of the auxiliary wefts is woven twice into a repeating unit of a texture by a warp. Each auxiliary weft is placed over at least two other warps extending above two adjacent primary wefts. The auxiliary wefts are pushed or urged upwardly thereof by these at least two other warps in order to form a flat paper making surface of the fabric, whereby wire marks on a paper are reduced.

Single layer paper making on which plane surfaces of auxiliary weft

A novel extendable and heat shrinkable polyester monofilament suitable for producing an endless fabric which deforms plastically in the loading range of 0.5 g/d-2.5 g/d and has an extension at the yield point in the range of 1-10%.

Extendable and heat shrinkable polyester mono-filament for endless fabric

A weft-water type n-shaft papermakers' fabric has a running side surface and a papermaking side surface, in which n is an integer of at least 6. The fabric has warps and wefts forming the running side surface, the wefts consisting of both short crimp-forming wefts, which cross two or more warps, and long crimp-forming wefts which have a length more than 1.5 times the length of the short crimp. The improvement in crimpiness permits the use of large wefts having a large diameter. The arrangement of the running side surface does not affect the papermaking side surface of a double layer, triple layer or other multilayer weave.

Weft-wear papermaker's fabric with short and long weft crimps

A papermakers' double layer type fabric comprises in one repeat a warp layer consisting of n (an integer of at least 7).times.2 of warps, and n (an integer of at least 7).times.2 of wefts arranged on the warp layer as the upper surface wefts and n (an integer of at least 7).times.2 of wefts arranged under the warp layer as the lower surface wefts. The lower surface wefts consist of polyester yarns and polyamide yarns, the lower surface polyamide wefts being each interlaced once in one repeat with a warp and the lower surface polyester wefts being each interlaced once or twice in one repeat with a warp.

Papermaker's double layer fabric with high warp and weft volume per

In a single-layer papermaking woven fabric or more than three shafts having an extended running surface formed from long crimped primary wefts, auxiliary wefts each having a smaller diameter than that of primary wefts are each disposed between each of primary wefts. Every auxiliary weft is placed on warps at portions extended from the paper side of where warps are primary weft to the running said of the succeeding primary weft or at portions where warps are extended from the running side of a primary weft to the paper side of the succeeding primary weft. Each of said auxiliary wefts is woven into texture of the fabric at least once in a repeating unit by a warp to thereby complete the repeating unit. To this end, the auxiliary wefts are disposed in recesses which will otherwise make appearance on said papermaking surface at locations corresponding to the portions of the warps extending from one of the papermaking surface and the running surface of the fabric toward the other in order thereby to form a smooth papermaking surface.

Papermaking fabric having recesses on papermaking surface filled with

In a single-layer papermaking woven fabric of more than four shafts, auxiliary wefts each having a smaller diameter than that of the primary wefts are disposed between each of the primary wefts. Each of the auxiliary wefts is woven once into a repeating unit of a texture by a warp. Each auxiliary weft is placed by at least two other warps extending above two adjacent primary wefts. The auxiliary wefts are pushed or urged upwardly thereof by these at least two other warps in order to form a flat papermaking surface of the fabric, whereby wire marks on a paper are reduced.

Growing community of inventors

Tokyo, Japan

Taketoshi Watanabe