초록 ▼

A paper machine dryer fabric includes hollow thermoplastic monofilaments to replace at least a portion of the wefts, also known as cross-machine direction strands. Fabrics including such monofilaments may be either a woven fabric, or a spiral fabric. The deformable nature of the hollow monofilaments

A paper machine dryer fabric includes hollow thermoplastic monofilaments to replace at least a portion of the wefts, also known as cross-machine direction strands. Fabrics including such monofilaments may be either a woven fabric, or a spiral fabric. The deformable nature of the hollow monofilaments decreaes the air permeability of the fabric, and in the case of spiral fabrics, improves monofilaments retention within the helical coils between the hinge yarns. The hollow monofilaments have a solidity in the range of from about 60% to about 75%. A suitable thermoplastic is polyethylene terephthalate. Hollow monofilaments do not have the disadvantages of other deformable yarns, such as spun yarns, multifilament yarns or plied monofilament yarns, each of which tend to hold and entrap within their structure both water and foreign matter.

대표청구항 ▼

A heatset fabric, including weft strands, for use in papermaking machines, wherein at least a portion of the weft strands are hollow thermoplastic polymer monofilaments which, prior to heat setting, have a solidity in their undeformed cross-sectional area of from about 60% to about 75%, and wherein

A heatset fabric, including weft strands, for use in papermaking machines, wherein at least a portion of the weft strands are hollow thermoplastic polymer monofilaments which, prior to heat setting, have a solidity in their undeformed cross-sectional area of from about 60% to about 75%, and wherein the circumference of said hollow monofilaments is greater than, or equal to, the perimeter of the weft passageway they are to occupy in the fabric after heatsetting.