Medical elastic pad and preparation method thereof

A technology of elastic gaskets and raw materials, which is applied in the field of pharmaceutical elastic gaskets and its preparation, can solve the problems of reducing gasket sealing, shock absorption effect, easy pollution of the environment in the production process, and difficult stable control of product quality, so as to achieve easy quality Control and save processing energy consumption and equipment resources, and improve work efficiency

Active Publication Date: 2014-02-19
TIANCHANG TIANFANG PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, a sealing gasket is added to the drug packaging material to prevent fluid leakage, but the production process of the traditional sealing gasket is cumbersome, the production process is easy to pollute the environment, and the product quality is difficult to control stably, and it is difficult to recycle the product after use. And after the aging of the gasket, it is easy to appear sticky phenomenon, which reduces the sealing and shock absorption effect of the gasket. How to prepare an elastic gasket with good physical and mechanical properties, low cost, no pollution to the environment, long service life, and simple preparation method Chips become a technical problem that needs to be solved at present

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A pharmaceutical elastic gasket, its raw materials include: 55% hydrogenated styrene-butadiene rubber (SEBS), 41% white mineral oil, and 4% polypropylene.

[0018] A kind of preparation method of medical elastic gasket comprises the steps:

[0019] S1. Weigh the hydrogenated styrene-butadiene rubber (SEBS), white mineral oil, polypropylene, calcium carbonate, antioxidant and filming agent according to the proportion;

[0020] S2. Mix the weighed raw materials and stir evenly;

[0021] S3. The raw materials were granulated in a screw extruder, and injection-molded in an injection molding machine to obtain the medicinal elastic gasket, wherein the injection molding temperature was 210° C., the injection molding pressure was 47 kPa, and the speed was 52 mm / s.

Embodiment 2

[0023] A pharmaceutical elastic gasket, its raw materials include: 51% hydrogenated styrene-butadiene rubber (SEBS), 39% white mineral oil, 3% polypropylene, 5% calcium carbonate, 1% antioxidant, 1% rubber film agent.

[0024] A kind of preparation method of medical elastic gasket comprises the steps:

[0025] S1. Weigh the hydrogenated styrene-butadiene rubber (SEBS), white mineral oil, polypropylene, calcium carbonate, antioxidant and filming agent according to the proportion;

[0026] S2. Mix the weighed raw materials and stir evenly;

[0027] S3. The raw material is granulated in a screw extruder, and injected into an injection molding machine to obtain the medicinal elastic gasket, wherein the injection molding temperature is 160° C., the injection molding pressure is 80 kPa, and the speed is 70 mm / s.

Embodiment 3

[0029] A pharmaceutical elastic gasket, its raw materials include: 57% hydrogenated styrene-butadiene rubber (SEBS), 36% white mineral oil, 5% polypropylene, 1% calcium carbonate, 0.2% antioxidant, 0.8% rubber film agent.

[0030] A kind of preparation method of medical elastic gasket comprises the steps:

[0031] S2. Mix the weighed raw materials and stir evenly;

[0032] S3. The raw material is granulated in a screw extruder, and injected into an injection molding machine to obtain the medicinal elastic gasket, wherein the injection molding temperature is 260° C., the injection molding pressure is 40 kPa, and the speed is 30 mm / s.

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PUM

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Abstract

The invention discloses a medical elastic pad and a preparation method thereof. The medical elastic pad comprises the following raw materials in percentage by weight: 44-60% of hydrogenated styrene-butadiene rubber (SEBS), 36-55% of white mineral oil, 1-20% of polypropylene, 0-20% of calcium carbonate, 0-1% of antioxidant and 0-1% of adhesive film agent. The preparation method of the medical elastic pad comprises the following steps: step one. weighing the hydrogenated styrene-butadiene rubber, the white mineral oil, the polypropylene, the calcium carbonate, the antioxidant and the adhesive film agent in proportion; step two. mixing the weighed raw materials and uniformly stirring; and step three. carrying out injection molding so as to obtain the medical elastic pad, wherein the injection temperature is 160-260 DEG C, the injection molding pressure is 40-80kPa, and the speed is 30-70mm / s. The medical elastic pad is low in cost and long in service life and has good physical and mechanical properties. The preparation method is simple and does not pollute the environment.

Description

technical field [0001] The invention relates to the technical field of elastic gaskets, in particular to a medicinal elastic gasket and a preparation method thereof. Background technique [0002] At present, a sealing gasket is added to the drug packaging material to prevent fluid leakage, but the production process of the traditional sealing gasket is cumbersome, the production process is easy to pollute the environment, and the product quality is difficult to control stably, and it is difficult to recycle the product after use. And after the aging of the gasket, it is easy to appear sticky phenomenon, which reduces the sealing and shock absorption effect of the gasket. How to prepare an elastic gasket with good physical and mechanical properties, low cost, no pollution to the environment, long service life, and simple preparation method Chips become a technical problem that needs to be solved at present. Contents of the invention [0003] In order to solve the technical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L53/02C08L23/12C08K5/01C08K3/26B29C45/76
Inventor 杨荣基
Owner TIANCHANG TIANFANG PLASTIC IND
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