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Dyed polyolefin yarn and textile fabrics using such yarns

A polyolefin, polyolefin fiber technology, applied in the field of dyed polyolefin yarn and fabrics using this yarn

Active Publication Date: 2012-07-25
AQUADYE FIBERS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unsaturated polyester in this patent is not amorphous and does not mix well at the low temperatures required to produce polyolefins

Method used

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  • Dyed polyolefin yarn and textile fabrics using such yarns
  • Dyed polyolefin yarn and textile fabrics using such yarns
  • Dyed polyolefin yarn and textile fabrics using such yarns

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0075] The preparation of the compositions of the invention can be accomplished in several different ways. By contacting a dye enhancer comprising a terephthalate-based amorphous copolyester alone or optionally a polyolefin compatibilizer with a polyolefin polymer, by, for example, dry blending these materials and then passing the entire composition through extrusion Off the machine, dye enhancers can be added to the polyolefin. Those skilled in the art will readily appreciate that the components may be fed individually to the feed throat of the melt extruder rather than dry blending them prior to feeding into the extruder. Alternatively, the components can be sent directly to mixing equipment such as mixing extruders, high shear continuous mixers, two roll mills, intensive mixers such as Banbury, and the like. An alternative to mixing to ensure adequate dispersion of the dye enhancer is to mix in two stages. The first stage to prepare the concentrate (or masterbatch) involv...

Embodiment I

[0092] Example I - Monochrome Fabric

[0093] a) extrusion has 8 to 22 [HI1] dg / min melt flow index (measured with ASTM D-1238, condition L-230 / 2.16) of polyolefin pellets and blends using the above preferred PETG and polypropylene-graft-maleic anhydride mixture mix closely. A blend of 95% polyolefin and 5% PETG / polypropylene-graft-maleic anhydride was extruded into staple fibers using conventional fiber extrusion equipment. Fiber was 1.8 dpf and was cut to 1.5" (3.8 cm). Approximately 1,000 pounds (454 kg) of staple fiber were produced and packaged. The denier per filament was close to cotton, so it was a staple length.

[0094] b) Dye-enhanced polyolefin bales of rayon are mixed together during the carding process and made into an intimate blend of rovings. Roving made on conventional cotton equipment was ring spun to 10 / 1 cotton count and wound on 3 lb (1.3 kg) wraps. Approximately 1000 lbs (454 kg) of yarn were produced.

[0095] c) Knit 10 / 1 polyolefin yarn on a 10...

Embodiment II

[0099] Example II - Shades on Polyolefin Fabrics

[0100] a) Intimately mixing polyolefin pellets with a melt flow index of 8-22 dg / min with the above-mentioned dye enhancer. The mixture was 95% polyolefin with 5% dye enhancer consisting of PETG and polypropylene-graft-maleic anhydride as described in the present invention. The mixture is extruded into staple fibers using conventional staple fiber extrusion equipment. The dpf was 1.8 and cut to 1.5" (3.8 cm). Approximately 1,000 pounds (454 kg) of staple fiber were produced and packaged. The denier per filament was close to that of cotton, so it was a staple length. This batch was referred to as "Fiber A".

[0101] b) Intimately mixing polyolefin pellets with a melt flow index of 8-22 dg / min with the above-mentioned dye enhancer. The blend was 97% polyolefin with 3% disperse dye enhancing concentrate consisting of PETG and polypropylene-graft-maleic anhydride as described in this invention. The mixture is extruded into sta...

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Abstract

A novel polyolefin textile fabric knitted woven and non-woven that in one aspect of the invention is disperse dyed to a light, medium or deep solid hade. In another aspect, the textile fabrics of the present invention are manufactured using polyolefin yarns that contain variable amounts of dye acceptor additives. A fabric with more than one tone of a color is dyed in a single dye bath. The fabrics and yarn using this invention can be processed using conventional spinning, weaving, knitting, web forming machines and will dye using existing dyeing and finishing systems. This invention is of particular value in the apparel and home furnishings industry.

Description

Background of the invention [0001] The present invention relates to fabrics made using polyolefin fibers or yarns modified to be dyed with disperse dyes. These fabrics are conventionally colored with existing disperse dyes or dyeing systems. Obtain single shades or multiple shades in the same dyebath or printing operation. Fabrics in the present invention are manufactured as greige goods by knitting, weaving or non-woven processes. Monochrome is obtained with one level of dye additive. Multiple fibers each containing different levels of dye additive in the same dyebath will result in multiple shades. By increasing the amount of disperse dyeable additive in polyolefin yarn or fiber, the affinity for disperse dyes increases correspondingly. Fabrics produced according to the invention can be stored in dyeing factories in undyed form. Color is then added using conventional disperse dyeing machines or printing. Unexpected and novel effects are obtained using economical conven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D01F6/46D04H1/4291D04H3/16D06M13/148D06M13/203D06P1/00D06P1/16
CPCC09B67/0063D06P3/8204D06M13/203D06P3/854D01F1/10C09B67/008D06P1/16D06P3/794D01F6/04D06M13/148D06P1/0096D01F6/46D06P3/00A41D31/14
Inventor 爱德华·尼科拉
Owner AQUADYE FIBERS INC
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