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A kind of water-soluble polyvinyl alcohol microporous film and production method thereof

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

Active Publication Date: 2016-09-07
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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  • A kind of water-soluble polyvinyl alcohol microporous film and production method thereof
  • A kind of water-soluble polyvinyl alcohol microporous film and production method thereof
  • A kind of water-soluble polyvinyl alcohol microporous film and production method thereof

Examples

Experimental program
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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 microporous film. The current polyvinyl alcohol film is not a fabric that can really pass through the air, and the fabric weight is relatively heavy, and the overall wearing comfort needs to be further improved. The technical solution adopted by the present invention is to provide a water-soluble polyvinyl alcohol microporous film and its production method, which is characterized in that it is made from a polyvinyl alcohol aqueous solution through an ethanol extraction method, and the interior of the polyvinyl alcohol microporous film is Porous structure and interpenetrating, the size of the pores in the microporous film is 500-3000nm, the weight of the microporous film is 10-30 g / m2, and the porosity is 60-90%. After the polyvinyl alcohol microporous film of the present invention is compounded with the polyvinyl alcohol nonwoven fabric, the protective clothing made of its fabric is breathable, comfortable and light; it can more effectively prevent harmful pathogens from entering the protective clothing and infecting the wearer, avoiding the resulting risk of infection.

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 Patents(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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