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Compound filter pad, and preparation method and application thereof

A composite, filter pad technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of lack of data support for fat volume retention, no in vivo experimental data, low oil absorption and water removal efficiency, etc., and achieve good results. Biocompatibility and fluid-conducting ability, reducing reverse osmosis, and small pore size

Pending Publication Date: 2017-10-13
PLASTIC SURGERY HOSPITAL CHINESE ACAD OF MEDICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technique is usually mixed with other techniques, such as Salinas, etc. (cleaned and then treated with Telfa pad or centrifuged), but these experimental results are not yet supported by in vivo experimental data
[0006] Cotton pad filtration method can remove excess formed components, but there is still a lack of data support for the number of adipose stem cells contained in the processed adipose tissue and the fat volume retention rate after in vivo transplantation. time consuming
[0007] In addition, the general defects of the above four methods are that there is a lot of fat waste, the efficiency of oil absorption and water removal is not high, the operation is also time-consuming and laborious, and the investment cost is relatively high, which is not conducive to market application.

Method used

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  • Compound filter pad, and preparation method and application thereof

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Effect test

Embodiment 1

[0044] 1) Firstly, the polypropylene particles are spunbonded-meltblown, and the solution is prepared with sulfonate surfactants, and then the polypropylene particles are soaked at 50-60°C to be hydrophilically modified for 20-30 minutes, and then dried to obtain polypropylene SMS Non-woven fabric surface layer, the pore size is below 16μm;

[0045] 2) Then the polypropylene SMS non-woven fabric surface layer 1, the hot air guide layer 2 (composed of synthetic fibers and cellulose), the absorbent fiber layer 3 (SAF super absorbent fiber), and the back adhesive layer 4 (polypropylene fiber material) Arrange from top to bottom and then squeeze and compound to form a composite filter pad. See attached for specific structure figure 1 .

Embodiment 2

[0047] 1) First, the polypropylene particles are spun-bonded-melt-blown, and the solution is prepared with sodium bis(2-ethylhexyl) succinate sulfonate, and then the polypropylene particles are soaked at 50-60°C for hydrophilic modification 20- 30min, dry to obtain polypropylene SMS non-woven fabric surface layer, the pore diameter of which is below 15.5μm;

[0048] 2) Then the polypropylene SMS non-woven fabric surface layer, hot air guide layer (composed of synthetic fibers and cellulose), water-absorbent fiber layer (SAF super absorbent fiber), and back glue bottom layer (polypropylene fiber material) from top to bottom After arranging, it is extruded and compounded at 245-320℃, and shaped at 65℃ to obtain a composite filter pad.

Embodiment 3

[0050] 1) First, the polypropylene particles are spun-bonded-melt-blown, and the solution is prepared with sodium bis(2-ethylhexyl) succinate sulfonate, and then the polypropylene particles are soaked at 50-60°C for hydrophilic modification 20- 30min, dry to obtain a polypropylene SMS non-woven surface layer with a pore size of 15μm and an areal density of 11g / m 2 Below, the thickness is below 95μm, and the air permeability is below 14m / s;

[0051] 2) Then the polypropylene SMS non-woven fabric surface layer, hot air guide layer (composed of synthetic fibers and cellulose), water-absorbent fiber layer (SAF super absorbent fiber), and back glue bottom layer (polypropylene fiber material) from top to bottom After arranging, it is extruded and compounded at 250°C and shaped at 80°C to obtain a composite filter pad.

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Abstract

The invention provides a compound filter pad, and a preparation method and application thereof. The compound filter pad comprises a polypropylene SMS nonwoven fabric surface layer, a water-absorbing fiber layer and a backing adhesive bottom layer, wherein a hot air flow guide layer is arranged between the polypropylene SMS nonwoven fabric surface layer and the water-absorbing fiber layer; the pore diameter of the polypropylene SMS nonwoven fabric surface layer is controlled at 16[mu]m or below; and the hot air flow guide layer is a composite material layer composed of synthetic fibers and cellulose. The preparation method comprises the following steps: performing spunbonding-melt blowing on polypropylene particles, and performing hydrophilic modification by means of an anionic surfactant to obtain the polypropylene SMS nonwoven fabric surface layer; and sequentially superimposing the polypropylene SMS nonwoven fabric surface layer, the hot air flow guide layer, the water-absorbing fiber layer and the backing adhesive bottom layer from top to bottom, and performing extrusion and compounding to obtain the compound filter pad. The compound filter pad provided by the embodiments of the invention is favorably applied to the aspect of a particulate fat purification process; and the formed compound filter pad is high in surface smoothness, causes less fat waste and achieves high oil absorption and water removal effects, thereby being very beneficial to wide popularization and application.

Description

Technical field [0001] The invention relates to the field of granular fat purification, in particular, to a composite filter pad for purifying granular fat, and a preparation method and application thereof. Background technique [0002] The development of autologous fat transplantation has a history of more than 100 years, especially the invention of liposuction technology in the 1980s, which led to the rapid development of autologous fat particle transplantation. However, autologous fat particle transplantation itself has certain defects, that is, the retention rate of fat volume after transplantation is unpredictable and the difference is large (ranging from 20% to 90%). Among them, the purification method of granular fat has a great relationship with the absorption rate. At present, the methods for purification of granular fat mainly include standing method, centrifugal method, cleaning method and cotton pad method. The purpose of purification is to obtain higher concentratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B32B23/02B32B23/08B32B23/10B32B27/02B32B27/06B32B27/12B32B27/32B32B5/26
CPCB01D39/16B32B5/26B32B2262/04B32B2262/0253B01D2239/10
Inventor 祁佐良贾振华杨晓楠靳小雷陆海滨
Owner PLASTIC SURGERY HOSPITAL CHINESE ACAD OF MEDICAL SCI
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