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Transparent medical thermoplastic rubber plug and preparation method thereof

A thermoplastic and transparent technology, applied in the field of medical infusion packaging, can solve the problems of difficult to find black spots and foreign bodies, many processes, long cycle, etc., achieve excellent stability and biocompatibility, and improve the performance of puncture and chip removal.

Active Publication Date: 2014-02-26
CHONGZHOU JUNJIAN PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cycle is long, the process is numerous, and foreign matter is easily introduced during the production process.
At the same time, during the infusion process, the rubber stopper is prone to chipping due to puncture, which poses a certain safety hazard
[0003] Most of the current rubber stoppers are dark in color, and it is not easy to find black spots and foreign matter introduced in the production process during inspection and use

Method used

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  • Transparent medical thermoplastic rubber plug and preparation method thereof
  • Transparent medical thermoplastic rubber plug and preparation method thereof
  • Transparent medical thermoplastic rubber plug and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0040] In the preparation method adopted in the present invention, before the raw materials are extruded and granulated, the high-speed dry-blended mixture is pre-stored at 30-40°C for 24-48 hours to ensure the infiltration compatibility and mutual compatibility between the mineral oil and the resin. The formation of the transmission network structure, thereby improving the stability of the rubber plug. Now compare some experimental data as follows:

[0041] Table 3: Comparison Table of Stability Performance Test Results

[0042]

[0043]

[0044] The mixed storage results of raw materials in Table 3 and the results of rubber stopper stability investigation show that the best pre-storage conditions are at a temperature of 30°C-40°C and a time of 24-48h.

[0045] The invention has a simple process for preparing the medical thermoplastic rubber stopper, the cost is similar to that of the isoprene rubber stopper and the butyl rubber stopper, and has great market prospect. ...

Embodiment 1

[0049] A medical thermoplastic rubber stopper material, mainly made of the following raw materials in parts by weight: 5 parts of polystyrene, 15 parts of polyethylene, 55 parts of SEBS, 24.8 parts of mineral oil, tetrakis[3-(3,5-di-tert-butyl 0.1 part of pentaerythritol ester (Irganox 1010) and 0.1 part of tris(2,4-di-tert-butylphenyl) phosphite (Irgafox 168).

[0050] The preparation method comprises the following steps:

[0051] a: First blow dry polystyrene, polyethylene, and SEBS at 40°C for 3 hours;

[0052] b: Weigh dry polystyrene, polyethylene, SEBS and mineral oil, antioxidant;

[0053]c: dry-mix the raw materials in step b at high speed to obtain a mixture, and pre-store at 30°C for 48 hours;

[0054] d: Add the mixture in step c to a twin-screw extruder, melt blend, and granulate, wherein the temperature of the first zone of the twin-screw extruder barrel is 180°C, the temperature of the second zone is 180°C, and the temperature of the third zone is 185°C. The t...

Embodiment 2

[0057] A medical thermoplastic rubber stopper material, mainly made of the following raw materials in parts by weight: 15 parts of polystyrene, 5 parts of polyethylene, 55 parts of SEBS, 24.6 parts of mineral oil, tetrakis[3-(3,5-di-tert-butyl 0.2 parts of pentaerythritol ester (Irganox 1010) and 0.2 parts of tris(2,4-di-tert-butylphenyl) phosphite (Irgafox 168).

[0058] The preparation method is the same as in Example 1, and will not be repeated here.

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Abstract

The invention discloses a transparent medical thermoplastic rubber plug and a preparation method thereof. The transparent medical thermoplastic rubber plug is prepared from the following raw materials in parts by weight: 5-15 parts of polystyrene, 5-15 parts of polyethylene, 50-70 parts of SEBS (Styrene-Ethylene-Butadiene-Styrene block copolymer), 10-30 parts of mineral oil and 0.2-0.6 part of antioxidant. According to the preparation method, a mixture of polystyrene, polyethylene, SEBS and the medical-grade mineral oil is assisted by the antioxidant so as to obtain an alloy material with an interpenetrating network structure, and the alloy material fully meets the requirements on the performance of medical rubber plugs. The prepared medical thermoplastic rubber plug has excellent stability and biocompatibility, and meanwhile, compared with the traditional isoprene rubber plugs and butyl rubber plugs, the punctured scrap falling performance is improved obviously.

Description

technical field [0001] The invention belongs to the technical field of medical transfusion packaging, and in particular relates to a material of a transparent medical thermoplastic rubber stopper and a preparation method thereof. Background technique [0002] At present, most of the rubber stoppers for infusion packaging used in the market are made of butyl rubber and polyisoprene rubber through vulcanization molding. Its production cycle is long, the process is numerous, and foreign matter is easy to be introduced in the production process. At the same time, during the infusion process, the rubber stopper is prone to chipping due to puncture, which poses a certain safety hazard. [0003] Most of the current rubber stoppers are dark in color, and it is not easy to find black spots and foreign objects introduced in the production process during inspection and use. Contents of the invention [0004] In view of the problems existing in the prior art, the object of the prese...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L25/06C08L23/08C08K5/134C08K5/526B29B9/06B29C47/92B29C45/76B29C48/92
Inventor 赵立品马百钧范稀杨艳梅谢友顺梁劲
Owner CHONGZHOU JUNJIAN PLASTIC CO LTD
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