32results about How to "High fabric strength" patented technology

One embodiment of the present invention is an endless non-woven tissue making fabric having a three-dimensional texture suitable for use as a fabric for producing three-dimensional fibrous webs. The endless non-woven tissue making fabric comprises a plurality of substantially parallel adjoining sections of non-woven material. Each section of non-woven material has a width substantially less than the width of the non-woven tissue making fabric. Each section of non-woven material may be joined to at least one other adjoining section of non-woven material. The non-woven tissue making fabric has a machine direction, a cross-machine direction, a tissue contacting surface and a tissue machine contacting surface. The tissue contacting surface comprises solid matter at a plurality of heights such that the tissue contacting surface of the non-woven tissue making fabric has an Overall Surface Depth of at least 0.2 mm in regions of solid matter on the tissue contacting surface.

This invention relates to a process to produce propylene polymers comprising contacting a metallocene catalyst compound and an activator in a reaction medium comprising propylene, from 0 to 30 volume % of one or more solvents and from 0 to 30 mole % of one or more comonomers, under temperature and pressure conditions below the melting point of the propylene polymer and where: a) the temperature is at or above the critical temperature for the reaction medium, and the pressure is at least 500 kPa above the critical pressure of the reaction medium; or b) the temperature is 1° C. or more above the critical temperature for the reaction medium, and the pressure is at or above the critical pressure of the reaction medium; or c) the temperature is 1° C. or more above the critical temperature for the reaction medium, and the pressure is at least 500 kPa above the critical pressure of the reaction medium.

A puncture, pierce, and cut resistant fabric comprised of a plurality of sheets of plates arranged in a repeating pattern. A material interconnects the plates. The fabric is twistable, bendable, and flexible. It is constructed of substances that will withstand cutting, puncture, and piercing forces encountered in medical or other environments.

Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of preparing branched crystalline polypropylene composition that comprises contacting a supported metallocene catalyst compound with a polymerization medium that comprises propylene monomers; and conducting polymerization of the propylene monomers at a temperature greater than 70° C. for a time sufficient to provide branched crystalline polypropylene that has from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 70 J/g or more.

One embodiment of the present invention is an endless non-woven tissue making fabric. The endless non-woven tissue making fabric has a machine direction, cross-machine direction, a tissue machine contacting surface, a tissue contacting surface, a first side edge, and a second side edge. The non-woven tissue making fabric comprises a fabric strip of non-woven material comprising at least one layer of non-woven material. The fabric strip has a first edge, an opposing second edge, a machine direction, and a cross-machine direction. The fabric strip may be spirally wound in a plurality of contiguous turns wherein the first edge in a turn of the fabric strip extends beyond the second edge of an adjacent turn of the fabric strip, thereby forming a spirally continuous seam with adjacent turns of the fabric strip.

This invention relates to polypropylene fibers and fabrics containing polypropylene fibers, the fibers comprising propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of about 10 dg/min to about 25 dg/min; b) a dimensionless Stress Ratio/Loss Tangent Index R₂ [defined by Eq. (8)] at 190° C. from about 1.5 to about 30; c) an onset temperature of crystallization under flow, T_c,rheol, (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least about 123° C.; d) an average meso run length determined by ¹³C NMR of at least about 55 or higher; and e) optionally, a loss tangent, tan δ, [defined by Eq. (2)] at an angular frequency of 0.1 rad/s at 190° C. from about 14 to about 70.

The invention discloses a cotton and polyester bunchy heterochromatic interwoven fabric, wherein CJ9.7 tex is adopted as warp, CJ11.6Ztex+T11.8Ztex is adopted as weft; and the fabric texture adopted is a 1/1 and 2/2 modified rib weave. According to a processing process of the cotton and polyester bunchy heterochromatic interwoven fabric, special technological conditions are adopted in processes such as spinning, weaving, and dyeing and finishing. The fabric and the processing process have the beneficial effects that a novel polyester bunchy yarn of the fabric is spun by applying the conventional polyester raw material, a heterochromatic dyeing effect is represented after the novel polyester bunchy yarn is interwoven and dyed with a cotton bunchy yarn, and a considerable effect is achieved after the two conventional fibers are interwoven through the innovative design. Because of embedding of the polyester bunchy yarn, the crease resistance of a cotton product is also improved, the strength and the washing fast-drying property of the fabric are increased and the like, low cost and good quality are realized, and the market positioning on the cost performance of the product is met. The product design has innovativeness and systematicness. During printing and dyeing processing, the heterochromatic effect of the fabric is achieved by using a cotton and polyester heterochromatic dyeing process through an improved process.

There is provided a fiber for a wetlaid non-woven fabric, said fiber can be the basis ingredient of a paper that maintains uniform mass per unit area and fiber dispersion and has unprecedented bulkiness. The fiber for a wetlaid non-woven fabric has 30 to 100 wt % of apparently crimping fibers with a fiber diameter of from 3 to 40 mum and 0 to 70 wt % of latently crimping fibers with a fiber diameter of from 3 to 40 mum.

In a conductive fabric that includes conductive yarn and non-conductive yarn, a fabric end edge in a region that includes an end portion of at least a portion of the conductive yarn is provided in a position recessed farther to an inside of a fabric surface than a fabric end edge in another region. The end portion of the at least a portion of the conductive yarn is provided to the inside of the fabric surface.

Certain specific embodiments of the inventions will now be discussed. For example, a process of preparing a copolymer composition that includes a diene-modified polypropylene copolymer is described, which process includes: contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer and an alpha, internal non-conjugated diene monomer; and conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a diene-modified polypropylene random copolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 25 J/g or more.

Certain specific embodiments of the invention will now be discussed. For example, a process of preparing a polymer composition that includes a branched crystalline diene-modified polypropylene random terpolymer is described, which process includes: contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer, a first diene monomer, and a second diene monomer; and conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a branched crystalline diene-modified polypropylene random terpolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 30 J/g or more

The invention discloses a high-density carbon fiber needled felt, which is formed by stacking and needling structural units, each comprising a carbon fiber mesh base and a carbon fiber stretch fabric.The carbon fiber fabric prepared with stretch fibers replaces common carbon fiber fabric, the thickness of the carbon fiber fabric is reduced, the rebound in the needling process caused by gaps amongthe carbon fibers is reduced, and therefore, the overall density and mechanical strength of the carbon fiber needled felt are improved. In addition, the service life of a felting needle for the high-density carbon fiber needled felt can be extended.

The invention relates to printing and dyeing methods, particularly to a cotton-viscose blended fabric reactive dyeing production process. The cotton-viscose blended fabric reactive dyeing production process is applicable to new production processes of dyeing cotton-viscose woven fabrics with an overflow dyeing machine. The cotton-viscose blended fabric reactive dyeing production process is implemented according to the following steps of fabric sample selection, technical process design, gray fabric singeing, alkali desizing design and washing, setting of pretreatment formulas and processes andreactive dye dying formulas and processes, sample vat dyeing, setting of dyeing, oiling and setting processes, after-finished product pre-shrinking, and finished product inspection. The cotton-viscose blended fabric reactive dyeing production process changes the dye yield and the color saturation of cotton fiber of cotton-viscose fabric non-mercerizing processes, ensure consistent dye yield of cotton fiber and viscose fiber, solves the problem of color difference between the cotton fiber and the viscose fiber, and meanwhile, reduces damage of dyeing processes to the viscose fiber and greatlyimproves the strength of fabrics and the quality of products to meet the increasingly strict requirements of clients on quality.

A double-faced woven fabric includes a first and a second weave unit interlocked to each other at a plurality of stitching points. The first weave unit includes a plurality of interlaced first warp and weft threads to define a first face, and the second weave unit includes a plurality of interlaced second warp and weft threads to define a second face, which is not coplanar with the first face. The stitching points are formed by crossing the first warp threads over predetermined second weft threads, so that the stitching points are always covered by float second warp threads adjacent to the stitching points. The double-faced woven fabric with the interlocked first and second weave units has largely increased fabric strength and can present different textures, colors or patterns on the first and the second face to thereby provide good applicability.

An industrial fabric is a web woven from warp yarns made of monofilaments and weft yarns made of monofilaments. The warp yarns are of a double-layer structure. One of warp yarn basic units comprises four sub-units, two sub-units being located on an upper layer, the other two sub-units being located on a lower layer. The warp yarns on the upper layer and the warp yarns on the lower layer are vertically overlapped, wherein at least two sub-units comprise two parallel narrow warp yarns. Upper warp yarns and lower warp yarns are identical in texture structure, or one surface is identical to the other surface after rotating by 180 degrees. The industrial fabric is stable in structure and good in overall consistency. The upper surface is good in flatness, the surface is free from defects, and the quality and intensity of the fabric are improved.

The invention provides celestial-axis glass fabric and a weaving method thereof, and the celestial-axis glass fabric comprises warps and wefts. The celestial-axis glass fabric is characterized in thatthe warps comprise two thick warps and one fine warp, the wefts comprise two thick wefts, the two thick warps are arranged side by side, the two thick wefts are arranged side by side, the two thick warps and the two thick wefts are woven into gridding cloth, the fine warp is positioned between the two thick warps, and the fine warp and the two thick warps are arranged side by side, the fine warpis crossed and woven with the two thick warps for clamping the two thick wefts between the fine warp and the two thick warps. For the fabric, the fine warp is arranged between the two thick warps sideby side, and the fine warp is crossed with the thick warps for clamping the thick wefts between the fine warp and the two thick warps, so that the wefts are fixed and do not deviate, and therefore, stability of fabric is improved, and fabric strength is improved.