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A filter element used in high viscosity occasions and its production method

A production method and high-viscosity technology, applied in the direction of separation methods, chemical instruments and methods, fixed filter elements, etc., can solve the problems of large filter element volume, high maintenance costs, and low dirt holding capacity, and achieve high interception efficiency, The effect of saving production cost and high dirt carrying capacity

Active Publication Date: 2020-11-24
HANGZHOU DEEFINE FILTRATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing filter elements used for high-viscosity liquid filtration have problems such as large volume, low pressure resistance, low dirt holding capacity, easy clogging, and high maintenance costs, which are not conducive to continuous production

Method used

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  • A filter element used in high viscosity occasions and its production method
  • A filter element used in high viscosity occasions and its production method
  • A filter element used in high viscosity occasions and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for producing a filter element applied to a high-viscosity occasion, comprising the following steps:

[0035] (1) Prepare the inner core: introduce one end of the bicomponent fiber non-woven filter membrane with a width of 1m into the winding roller of the winding machine, and use the pressure roller to compress it tightly, and circulate the hot air. The temperature of the circulating hot air is 90°C. Slightly melt the surface of the fiber shell PE material of the bicomponent fiber non-woven filter membrane; turn on the winding machine, set the line speed to 0.05m / min, set the tension value at 6N, and the bicomponent fiber non-woven filter membrane is rolled Winding on the roll to form a winding film; when the meter counter on the winding machine counts to 1m, the length of the winding film reaches 1m, the winding machine stops winding, and the bi-component fiber non-woven filter membrane is cut. make the inner core;

[0036](2) Prepare the intermediate filter...

Embodiment 2

[0040] A method for producing a filter element applied to a high-viscosity occasion, comprising the following steps:

[0041] (1) Prepare the inner core: introduce one end of the two-component fiber non-woven filter membrane with a width of 1.2m into the winding roller of the winding machine, and press it tightly with a pressure roller, and circulate hot air with a temperature of 92°C , so that the surface of the fiber shell PE material of the two-component fiber non-woven filter membrane is slightly melted; open the winding machine, set the line speed to 0.5m / min, set the tension value at 7N, and the two-component fiber non-woven filter membrane is at Winding on the winding roller to form a winding film; when the meter counter on the winding machine counts to 0.2m, the length of the winding film reaches 0.2m, the winding machine stops winding, and the bicomponent fiber non-woven fabric is cut filter membrane to make the inner core;

[0042] (2) Prepare the middle filter laye...

Embodiment 3

[0046] A method for producing a filter element applied to a high-viscosity occasion, comprising the following steps:

[0047] (1) Prepare the inner core: introduce one end of the two-component fiber non-woven filter membrane with a width of 2m into the winding roller of the winding machine, and press it tightly with a pressure roller, and circulate hot air with a temperature of 100°C. Slightly melt the surface of the fiber shell PE material of the bicomponent fiber non-woven filter membrane; turn on the winding machine, set the line speed to 0.7m / min, set the tension value at 10N, and the bicomponent fiber non-woven filter membrane is rolled Winding on the roll to form a winding film; when the meter meter on the winding machine counts to 1.2m, the length of the winding film reaches 1.2m, the winding machine stops winding, and the bi-component fiber non-woven filter is cut Membrane, making the inner core;

[0048] (2) Prepare the intermediate filter layer: import one end of th...

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Abstract

The invention discloses a filter element applied to a high viscosity occasion and a production method thereof. The filter element comprises an inner core, an intermediate filter layer and an outer layer from the inside to the outside. The inner core is of a hollow column core structure formed by winding a bicomponent fiber nonwoven filter membrane in a hot melting mode, the intermediate filter layer is wound around the outer surface of the inner core, and the intermediate filter layer is wound by a glass fiber film. The outer layer is wound around the outer surface of the intermediate filter layer. The outer layer is wound by a polypropylene nonwoven film. The production method of the filter element includes the following steps: the first step of preparing the inner core; the second step of preparing the intermediate filter layer; the third step of preparing the outer layer; the fourth step of edge sealing and trimming. The filter element is loose inside and tight outside, and the filtering efficiency is gradually increased from the inside to the outside. When high-viscosity chemicals are filtered, the filter element is better in pressure, higher in dirt holding capacity and higherin filtering efficiency.

Description

technical field [0001] The invention relates to the technical field of manufacturing filter elements, in particular to a filter element used in high-viscosity occasions and a production method thereof. Background technique [0002] Chemicals in the microelectronics industry, such as photoresist, are high-viscosity, high-purity chemicals. Due to the high-precision requirements of the microelectronics industry, these high-purity chemicals need to be filtered in multiple stages before they can be used in the process. [0003] High-viscosity chemicals refer to fluid states with a viscosity much greater than that of water. For example, the viscosity of polymer solutions of chemical fibers can reach tens to hundreds of poises. It tends to behave differently from low viscosity liquids during filtration because of the large increase in viscosity with increasing molecular weight. The apparent viscosity of high viscosity chemicals generally decreases with increasing shear rate. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B01D29/11
CPCB01D29/111B01D39/14
Inventor 张凌霄李圣泉
Owner HANGZHOU DEEFINE FILTRATION TECH
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