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Water soluble polyvinyl alcohol micropore membrane and production method thereof

A polyvinyl alcohol, microporous film technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve problems such as insufficient air permeability, gram weight, etc., to avoid infection risks and reduce operating costs. , the effect of reducing the number of

Active Publication Date: 2014-03-05
GRI MEDICAL & ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the problems of insufficient air permeability and heavy grammage in the above-mentioned existing polyvinyl alcohol film, and provide a light polyvinyl alcohol film with good air permeability, which can be combined with polyethylene Alcohol nonwovens can be used to make barrier protective clothing after compounding

Method used

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  • Water soluble polyvinyl alcohol micropore membrane and production method thereof
  • Water soluble polyvinyl alcohol micropore membrane and production method thereof
  • Water soluble polyvinyl alcohol micropore membrane and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] With following proportioning, polyvinyl alcohol aqueous solution is prepared in polyvinyl alcohol dissolution reactor 1:

[0065] Polyvinyl alcohol 1799 resin 100

[0066] Lauryl alcohol polyoxyethylene ether 6.25

[0067] water 1150

[0068] The above mixed solution was heated to 85-95°C while stirring, and after stirring for 2 hours, the polyvinyl alcohol resin was completely dissolved. The solution is stored in the temporary storage tank 2, filtered through the primary filter 5, cooled by the heat exchanger 6 to maintain a constant temperature, vacuum degassed in the defoaming kettle 7, and then enters the heat preservation tank 8 for storage. The polyvinyl alcohol aqueous solution stored in the thermal insulation storage tank 8 enters the coating machine 12a after the high-pressure metering pump 9 and the static mixer 10 and the final filter 11, and is evenly coated on the PET film base material 13 to form a wet Film, coat weight 250 gsm.

[0069] After the wet ...

Embodiment 2

[0077] Prepare the mixture in the following proportions:

[0078] Lauric acid 10

[0079] Lauryl alcohol polyoxyethylene ether 18.5

[0080] water 1116

[0081] After the above mixed solution is heated to 85-95°C while stirring in the polyvinyl alcohol dissolution reactor 1, a light blue translucent emulsion is formed. After adding 100 parts of 1799 polyvinyl alcohol resin, continue to insulate and stir for 2 hours to completely dissolve the polyvinyl alcohol resin. The dissolved polyvinyl alcohol aqueous solution is cooled to about 40° C. through the condenser 6, sent to the primary filter 5 for filtration with the pump 4, and stored in the temporary storage tank 2 for use. Use the pump 4 to send the polyvinyl alcohol aqueous solution from the temporary storage tank 2 to the vacuum defoaming kettle 7 for vacuum degassing, and put it in the heat preservation storage tank 8 to keep it at a constant temperature for 30 minutes, then through the high pressure metering pump 9, s...

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Abstract

The invention discloses a water soluble polyvinyl alcohol micropore membrane. The existing polyvinyl alcohol membrane is not completely breathable fabric, has relatively heavy gram weight, and is expected to be improved in comprehensive wear comfortableness. The invention provides the water soluble polyvinyl alcohol micropore membrane and a production method thereof. The water soluble polyvinyl alcohol micropore membrane is characterized by being prepared frompolyvinyl alcohol water solution through an ethyl alcohol extraction method. The interior of the polyvinyl alcohol micropore membrane is of a porous structure, and the pores are communicated, wherein the size of the pore in the micropore membrane is 500-3000nm, the gram weight of the micropore membrane is 10-30g per square meter, and the porosity is 60-90%. The protection suit made of the fabric compounded by the polyvinyl alcohol micropore membrane and the polyvinyl alcohol non-woven cloth has light weight, and is breathable and comfortable for wearing, can effectively prevent harmful causative agent from entering and infecting a wearer so as to avoid infection risk.

Description

technical field [0001] The invention relates to the field of polymer functional film materials, in particular to a biodegradable water-soluble polyvinyl alcohol microporous film and a production method thereof. Background technique [0002] With the continuous improvement of modern people's demand for quality of life, the demand for medical protection technology is also increasing. The protective products that have been used repeatedly for many years, such as cotton white coats and surgical gowns, are gradually disappearing and replaced. The most important thing is disposable protective equipment, such as disposable surgical gowns, masks, etc. Disposable protective equipment is directly sealed and sterilized or destroyed after use, avoiding the secondary infection of medical staff and patients caused by incomplete disinfection or intermediary link pollution during repeated use, greatly reducing the occurrence and spread of diseases, and improving public health. In other sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J9/00C08J9/26C08L29/04B32B27/02B32B27/12B32B27/30
Inventor 方海素王凯唐岷杨朝群肖先德
Owner GRI MEDICAL & ELECTRONICS TECH CO LTD
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