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Method for preparing bandage with calcined gypsum being pasted and compsn. of magma liquid

A production method and technology of plaster of paris, applied in bandages, medical science, absorbent pads, etc., can solve problems such as complex production process, pollution of white bandages, increased fear and depression of patients, and achieve simple and reasonable process and stable curing time Effect

Inactive Publication Date: 2006-12-20
JIEKANG MEDICAL COMPONENT YIWU CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The product is not easy to drop powder and easy to use. The disadvantage is that the curing time is unstable and often softens. If it is not done well, there will be medical accidents. The product must go through two drying and dehydration processes. The production process is complex and consumes a lot of energy.
From the perspective of color, due to the limitation of raw material composition ratio and production process, it must be soaked in water when used. At present, plaster bandages are all single white, and a single white bandage cannot meet the requirements of patients of different ages and preferences. It is easily polluted and affects the appearance, and increases the fear and depression of some patients about white

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: get plaster powder (CaSO 4 1 / 2H 2 O content > 85%, the same below) 100 parts, 40 parts of polyvinyl acetate methanol solution with a concentration of 23%, add 0.4-0.6 parts of fast red BBS, mix, adjust and refine to obtain the original slurry of gypsum powder. 95±0.5cm, 32S or 40S cotton degreasing gauze with a warp and weft density of 30×20 is introduced into a multi-roller special sizing machine for sizing to make a sizing tape with a sizing amount of 360g / m 2 ; Lead the slurry tape into and pass through the drying cabin, remove the solvent methanol, dry and set, roll up, divide into rolls, and then cut and package to obtain a red plaster bandage. The drying temperature of the pulping belt is 70°C, and the removed methanol can be reused after recovery.

Embodiment 2

[0018] Embodiment 2: get 100 parts of calcined gypsum powder, concentration is 70 parts of polyvinyl alcohol ethanol liquid of 4%, do not add pigment, mix and blend and refine pulp to obtain former pulp liquid, the processes such as gauze hanging pulp, drying are the same as embodiment 1, wherein Hanging pulp amount is 400g / m 2 , the drying temperature is 80°C. Get a white plaster bandage.

Embodiment 3

[0019] Embodiment 3: get 100 parts of calcined gypsum powder, concentration is 50 parts of carboxymethyl cellulose tetrachloride solution of 10%, Prussian blue part, mixes and blends and refines pulp to obtain former slurry, other procedures are with embodiment 1 , where the amount of slurry is 400g / m 2 , the drying temperature is 90°C. Get a blue plaster bandage.

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Abstract

A process for preparing the plaster bandage includes preparing raw slurry, uniformly coating it on the substrate of bandage, baking, rolling and uctting. The said raw slurry contains plaster and the organic solution high-molecular additive in Wt. ratio of 1:(0.3-0.8). Its product features high adhesion and stable setting time.

Description

【Technical field】 [0001] The invention belongs to the technical field of medical materials, and specifically refers to a production method of a slurry-hanging plaster of paris stretcher and its original slurry composition. 【Background technique】 [0002] Bandages are the most widely used external fixation orthopedic materials in orthopedic treatment, and plaster bandages are the most widely used in the market. Commonly used plaster bandages can basically be divided into two categories: one is powdered plaster bandages, which are made of plaster of paris (calcium sulfate hemihydrate) directly sprinkled on gauze. Limbs, wait for the plaster bandage to absorb water and solidify. The product is extremely inconvenient to operate, and the gypsum powder is seriously lost when soaked in water, which not only causes waste, but also pollutes the environment, and also affects the strength of the bandage after curing. The other is the viscose plaster bandage, which uses raw gypsum (th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/12A61L15/08
Inventor 程平汪贻才
Owner JIEKANG MEDICAL COMPONENT YIWU CITY
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