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Blanket in use for papermaking

A blanket and fiber technology, applied in the field of dehydration equipment for papermaking, can solve the problems of poor wear resistance and short service life, and achieve the effects of improving shape stability, service life and compressibility

Inactive Publication Date: 2007-05-09
上海弘纶工业用呢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of poor wear resistance and short service life of the papermaking felt in the prior art, and provide a felt for papermaking with good compressibility, high heat resistance and long service life

Method used

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  • Blanket in use for papermaking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] It is suitable for corrugated base paper and large roll diameter blind hole press.

[0027] Warp yarn: 0.2mm*6*1 Warp density: 145 threads / 10 cm

[0028] Weft yarn: 0.3 mm Weft density: 60 threads / 10 cm

[0029] Surface fiber: 11D nylon 46+25D nylon 66: 30%;

[0030] Among them, 11D nylon 46: 25D nylon 66 = 20%: 10%.

[0031] Core fiber: 25D nylon 66: 37%.

[0032] Back layer fiber: 25D nylon 46: 33%.

[0033] Air permeability of blanket: 60-65cfm

[0034] Blanket thickness: 3.5 mm

Embodiment 2

[0036] It is suitable for common dried noodle box board paper and a vacuum pressing part.

[0037] Warp yarn: 0.2mm*4*2 Warp density: 150 strands / 10 cm

[0038] Weft yarn: 0.3 mm Weft density: 60 threads / 10 cm

[0039] Surface fiber: 11D nylon 46+25D nylon 46: 25%;

[0040] Among them, 11D nylon 46: 25D nylon 46 = 15%: 10%.

[0041] Core fiber: 25D nylon 66: 35%.

[0042] Back layer fiber: 25D nylon 46:40%.

[0043] Air permeability of blanket: 65-75cfm

[0044] Blanket thickness: 3.3 mm

Embodiment 3

[0046] It is suitable for corrugated paper and blind air press.

[0047] Warp yarn: 0.2mm*6*1 Warp density: 78 strands / 10 cm

[0048] Weft yarn: 0.3 mm Weft density: 60 threads / 10 cm

[0049] Surface fiber: 10D nylon 66+25D nylon 46: 30%;

[0050] Among them, 10D nylon 66: 25D nylon 46 = 15%: 15%.

[0051] Core fiber: 25D nylon 66: 32%.

[0052] Back layer fiber: 25D nylon 46: 38%.

[0053] Air permeability of blanket: 60-70cfm

[0054] Blanket thickness: 3.7 mm

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Abstract

The present invention relates to a wool felt for making paper. It includes base wire layer, upper layer fiber and back layer fiber. The fineness of the described upper layer fiber is less thon that of back layer fiber, and the described upper layer fiber is made up by mixing polyester fiber and polyamide fiber with different finenesses or is made up by mixing two polyamide fibers with different finenesses, and the described back layer fiber is made up by using polyamide fiber.

Description

Technical field [0001] The invention relates to a dewatering device for papermaking, in particular to a felt for papermaking. Background technique [0002] The bottom-net press papermaking felt is a special textile used in the press section of a paper machine. It is mainly used for dewatering, supporting paper sheets, and modifying paper sheets. Among them, dewatering and service life are the key, and the dewatering function will change with the use of time. Changing characteristics. Under the strong pressure conditions in the operation of modern high-speed paper machines, the air permeability and water filterability of the papermaking felts are significantly reduced, and the size of the papermaking felts is unstable, and the warp and weft directions are stretched to different degrees, and the resilience becomes poor. , Papermaking blankets become thinner and thinner, and their service life is shortened. Through theoretical analysis of the dehydratio...

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): D21F7/08D03D1/00D01F6/60
Inventor 朱建国吴立发
Owner 上海弘纶工业用呢有限公司
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