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Production technology of water-solubility PVA film sheath

A production process and film sleeve technology, which is applied in the production process field of water-soluble PVA film sleeves, can solve the problems affecting the scope of use and limited application range of water-soluble PVA film sleeves, and achieve the effect of simple method

Inactive Publication Date: 2010-11-17
GRI MEDICAL & ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The application range of the water-soluble PVA film cover produced by the existing process to be solved by the present invention is limited, especially the problem that the welding seam of the existing water-soluble PVA film cover affects the use range.

Method used

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  • Production technology of water-solubility PVA film sheath
  • Production technology of water-solubility PVA film sheath

Examples

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Embodiment Construction

[0029] Taking the production of the PVA film cover 5 for prostheses as an example, the present invention will be further described in conjunction with the accompanying drawings and examples.

[0030] Such as figure 2 As shown, the PVA impregnated and coated PVA slurry 2 is produced as follows: 50kg of 1788 type PVA resin, 6.3kg of white carbon black, 360kg of water, 7.5kg of glycerol, 0.3kg of organic silicon wetting agent, organic silicon Leveling agent 0.3kg, silicone defoamer 0.2kg. According to the above ratio, first mix and stir the PVA resin, white carbon black and water, start heating and stirring to about 90°C until the resin particles are completely dissolved, then add the remaining materials in turn, after stirring evenly, cool to 50°C and keep warm. Vacuum degassing for later use.

[0031] In the dip coating equipment, the mold 1 used is made of metal aluminum, and the surface can be made into a mirror surface, a frosted surface, or have some specific patterns or...

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Abstract

The invention discloses a production technology of a water-solubility PVAfilm sheath, which comprises the steps of adding additives and water into a PVA resin to obtain PVA slurry, and molding for once with dipping technology for the prepared PVA to obtain the seamless water-solubility PVA film sheath as a whole. The products produced by the invention have good water-solubility and high quality.

Description

technical field [0001] The invention belongs to the production field of medical equipment or rehabilitation equipment, and specifically relates to a production process of a water-soluble PVA film cover. Background technique [0002] Film sleeves are widely used in various industries. In terms of medical use, in addition to the well-known medical latex gloves, there are also protective covers for various inspection instruments, such as some internal examinations, intubation sets for interventional treatments, etc. However, at present, most of the film sets for medical use are made of natural latex. Since natural latex contains proteins that are sensitized to specific races, it has certain treatment risks. Many synthetic polymer materials can also be made into film sleeves, such as some thermoplastic elastomers, polyurethane, silicone, and even PTFE, etc., but they are all limited by their material properties, manufacturing process, and cost. In particular, they use After di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/44B29C70/54
Inventor 方海素唐岷冯剑平杨朝群
Owner GRI MEDICAL & ELECTRONICS TECH CO LTD