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Filtration medium

A medium and particle filtration technology, applied in the direction of filtration separation, membrane filter, dispersed particle filtration, etc., can solve the problems of performance degradation, clogging of overall performance, decline, etc.

Inactive Publication Date: 2015-12-23
德克萨斯纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] A problem not only associated with the filter unit attached to the clothes is clogging and overall performance degradation over time
While it is tempting to simply wash the mask to remove residue, this often results in a drastic drop in performance, exposing the user to inhalation of dangerous particles

Method used

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  • Filtration medium
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0110] Example 1: Manufacturing of filter media

[0111] The properties of fiberstock

[0112]

[0113]

[0114] The antistatic fabric softener is washed away from Hercosett wool before processing the nonwoven web. Polypropylene does not contain antistatic agents.

[0115] Wool top cleaning

[0116] Process 3kg wool tops on the five-tank processing line:

[0117] ·Tank 1: Add 1g / L of Alcopol650 in 50℃ water;

[0118] · Tank 2-5: Only add water at 50°C.

[0119] Processing instructions:

[0120] ·Residence time in each tank: about 20 seconds

[0121] ·Processing speed: 8m / min (normal)

[0122] ·Number of wools processed in parallel: 2

[0123] ·Wool top weight: 20g / m

[0124] The fiber is then dried twice through a dryer.

[0125] Non-woven fabric manufacturing

[0126] Fiber web: It is used for Memmingen carding machine processing, mixing 40% polypropylene and 60% Hercosett wool by weight percentage:

[0127] · Treatment weight: about 700 grams (total polypropylene weight = 307 grams; wool weig...

Embodiment 2

[0134] Example 2: Washing and tumble drying

[0135] Ready to work:

[0136] Shrinkage test: Before processing, mark three 14.9cm×14.9cm areas on the nonwoven fabric with the center point.

[0137] Wash according to ISO6330-2000 / Amd1.2008(E)[15]:

[0138] Make a piece of 0.5m×1.0m nonwoven fabric go through the following process:

[0139] ·In the Wascator washing machine, go through a 2A normal 60℃ washing cycle together with the wash cloth, and then

[0140] ·Dry in Kenmore dryer, normal / durable washing and drying, even more dry.

[0141] Measure the size of the 14.9cm x 14.9cm mark on the dry cloth to determine the change in size.

Embodiment 3

[0142] Example 3: Filter test

[0143] Evaluation of filtration performance on PCFTI:

[0144] ·Number of samples (replicas) per medium: 3

[0145] ·Carded web: PCFTI test performed on sample No. 1

[0146] ○First test soon after acupuncture

[0147] ○ Perform the second test with the washed fabric, and perform the test at least 3 days after needle punching.

[0148] ·Washed fabric: Test together with the second test of the carded web

[0149] Non-woven needle felt products are made from clean wool and polypropylene fiber stock, which involves the use of washing and subsequent drying cycles to remove the treatment agent from the fiber surface.

[0150] Then the cleaned and dried fibers are mixed. The mixing ratio is 56.7% by weight of Hercosett wool and 43.3% by weight of polypropylene. The cleaned and dried fibers have been optimized to have a large electrostatic particle capacity and are used in non-woven fabrics. It is processed into a net on the carding machine.

[0151] The needle pu...

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Abstract

The present invention provides a particulate filtration medium comprising a combination of a wool fibre obtained from an animal, and a synthetic polymeric fibre, the wool fibre being coated with a water soluble resin, wherein the medium is capable of reclaiming electrostatic charge after a washing and / or drying procedure.

Description

[0001] Related application [0002] This application claims the priority of the Australian provisional patent application 2013900374, which was filed on February 6, 2013, the description of which is incorporated herein by reference. Technical field [0003] The invention relates to a medium for filtering atmospheric particulate matter. This medium is particularly suitable for breathing filter masks, while other uses are also predictable. Background technique [0004] All inhalable particles are considered harmful to some extent. Included in particularly harmful particles are silica, asbestos, sugar cane fiber, silicon carbide, diatomaceous earth, talc and cotton particles. If the particle control is not adequate, each of these particles can cause lung damage. [0005] The most common harmful particles in mines are particles containing silica, and the harmful effects on health increase proportionally with the proportion of silica in the particles, and inversely proportional to the pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/04A41D13/11A62B7/10A62B23/00
CPCA41D13/11A41D27/18B01D39/1615B01D39/1623B01D2239/064B01D46/66B01D39/083B01D46/0001B01D46/0032D01G13/00D04H1/46
Inventor 卡伦·达米·约瑟夫舒茨·尔格
Owner 德克萨斯纤维有限公司