Composite sewing thread of silk and yarn covering structure

A composite material and sewing thread technology, which is applied in the field of sewing thread, can solve the problems of poor wear resistance of sewing thread and low dust removal efficiency of dust filter bags, and achieve the effects of reducing wear and tear, reducing the risk of filter bag rupture, and reducing the rate of thread breakage

Pending Publication Date: 2017-11-07
苏州耐德新材料科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a composite material sewing thread with a silk / yarn covering structure, which is mainly used for sewing dust filter bags, which can effectively block the pinhole gaps after the filter bags are sewn, and improve the filtration efficiency of the filter material ; also because of the covering effect of the yarn, the wear resistance of the sewing thread is improved, and the problem of the low dust removal efficiency of the dust filter bag and the poor wear resistance of the sewing thread are solved; at the same time, because of the complementary mechanical properties of the materials, the composite material can make up Strength attenuation of polytetrafluoroethylene filaments due to material and thermal creep characteristics under heating

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Composite sewing thread of silk and yarn covering structure
  • Composite sewing thread of silk and yarn covering structure

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Experimental program
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Effect test

Embodiment Construction

[0031] Step 1, use a round 440dtex polytetrafluoroethylene monofilament produced by the "paste extrusion" process as the core wire 1, and a 20S polyphenylene sulfide single yarn as the outer covering yarn 2, through the covering yarn machine Covering is performed to form a covered yarn 3 . The twist direction of the covering twist is 520T / m, and the twist direction is "S"; the twist of the single yarn of the outer covering yarn 2 is 520T / m, and it is carded and spun using polyphenylene sulfide fibers with a linear density of 1.8dtex and a shear length of 51mm.

[0032] Step 2: Take two covered yarns 3 formed by the above-mentioned process, and carry out parallel twisting and plying through a plying machine to form a sewing thread 4 with a twist of 480 T / m and Z twist.

[0033] Step 3, after the above-mentioned polytetrafluoroethylene monofilament and polyphenylene sulfide covered yarn 3 are twisted and plied into a thread, they need to be shaped by a heating plate blanching se...

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Abstract

The invention relates to a composite sewing thread of a silk and yarn covering structure. The sewing thread is prepared by using polytetrafluoroethylene filaments as covering yarn core wires, using yarn with performance the same as or similar to or complementary to performance of filtering material surface layer fiber as the covering yarn, forming covering yarn through a covering technology, using the covering yarn as plied yarn and then conducting cabling and plying. Due to hairness of the covering yarn, more dust escaping through needle holes can be intercepted, and meanwhile the yarn layer has certain elasticity and can more compactly block the filter bag sewing needle holes, thereby improving the dust removing efficiency of a filter bag. Due to the covering effect of yarn, polytetrafluoroethylene filaments poor in wear resistance are protected, and the sewing thread has higher wear resistance.

Description

technical field [0001] The invention relates to a sewing thread, in particular to a composite material sewing thread with a covering structure. Background technique [0002] In recent years, under the increasingly severe situation of air pollution control, the bag dust removal technology, which is the main technical means of industrial waste gas purification, has received strong support from the national environmental protection policy, and the continuous improvement of emission standards has also promoted the unprecedented development of this technology. Wide application and development. Polytetrafluoroethylene (PTFE), polyphenylene sulfide (PPS), polyimide (PI), Aramid fiber and glass fiber and other high-temperature-resistant and corrosion-resistant filter materials have been widely used. It is the filter materials produced by these materials that undertake the task of meeting industrial waste gas discharge standards in bag dust removal technology and electric bag integr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/46D02G3/44D02G3/28D02G3/36D02G3/04D02J13/00
CPCD02G3/04D02G3/28D02G3/36D02G3/442D02G3/46D02J13/00D10B2101/06D10B2331/301D10B2331/14D10B2331/021D10B2321/10D10B2321/042
Inventor 陈明刚王玉华刘志瑞刘敏
Owner 苏州耐德新材料科技有限公司
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