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Rubber material for sealing cover of automatic injector and preparation process thereof

A technology for automatic injectors and rubber materials, applied in the field of rubber materials, can solve problems such as high zinc ion content, poor air tightness, and poor safety, and achieve the effects of simple process, good product quality, and good safety

Pending Publication Date: 2021-08-06
湖北华强药用制盖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional medical bottle stoppers need to be tested for heavy metal content, pH, ammonium ion content, zinc ion content, and volatile sulfide after production. However, zinc oxide is often used as a reinforcing agent and active agent in common butyl rubber stoppers. Resin is used as a vulcanizing agent, resulting in high zinc ion content in the cork and volatile sulfide, which is less safe
For the rubber stopper and sealing sleeve of the automatic injector, it is mainly to avoid particle shedding and poor air tightness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An automatic syringe sealing rubber material, the rubber material comprises a sealing plug: the sealing plug includes the following components according to the weight sharing: silica gel C6-235 45 parts, silica gel C6-265 45 parts, 2,5-dimethyl -2,5-dual-(tert-butyl peroxide) hexane, 0.8 carbon black;

[0031] Preferably, the manufacturer of silica C6-235 and silica gel C6-265 is Dow Corning elastomer.

[0032] The manufacturing process of the sealing plug includes the following steps:

[0033] S1 cooperation:

[0034] S2 kneading: Mix the raw material mixing is prepared by mechanical action;

[0035] S3 preform: Extrusion, calendering, cool, and tabs in order, then stop 4-6h, resulting in a preformed film;

[0036] S4 vulcanization: Place the preformed film into the molded mold and place the mold into the vulcanization machine for sulfurization.

[0037] S5 shearing: made of semi-finished products with special molds and punch scissors;

[0038] S6 test, store.

[0039] Pre...

Embodiment 2

[0046] An automatic syringe sealing rubber material, the rubber material is a sealing sleeve, the sealing sleeve includes the following components according to the weight sharing: silica gel C6-235 100 parts, 2,5-dimethyl-2, 5-double- (T-butyl peroxide) 1 part of hexane, 1 carbon black.

[0047] Preferably, the manufacturer of silica C6-235 and silica gel C6-265 is Dow Corning elastomer.

[0048] The manufacturing process of the sealing sleeve includes the following steps:

[0049] S1 cooperation:

[0050] S2 kneading: Mix the raw material mixing is prepared by mechanical action;

[0051] S3 preform: Extrusion, calendering, cool, and tabs in order, then stop 4-6h, resulting in a preformed film;

[0052] S4 vulcanization: Place the preformed film into the molded mold and place the mold into the vulcanization machine for sulfurization.

[0053] S5 shearing: made of semi-finished products with special molds and punch scissors;

[0054] S6 test, store.

[0055] Preferably, the step S2...

Embodiment 3

[0062] An automatic syringe sealing rubber material, the rubber material includes a sealing plug and a sealing sleeve: the sealing plug includes the following components according to the weight sharing: silica gel C6-265 50 parts, 2, 5- 1 dimethyl-2,5-double - (tert-butyl peroxide) hexane, 1 carbon black;

[0063] Preferably, the manufacturer of silica C6-235 and silica gel C6-265 is Dow Corning elastomer.

[0064] The automatic syringe sealing the production process of the rubber material, the process comprising the steps of:

[0065] S1 cooperation:

[0066] S2 kneading: Mix the raw material mixing is prepared by mechanical action;

[0067] S3 preform: Extrusion, calendering, cool, and tabs in order, then stop 4-6h, resulting in a preformed film;

[0068] S4 vulcanization: Place the preformed film into the molded mold and place the mold into the vulcanization machine for sulfurization.

[0069] S5 shearing: made of semi-finished products with special molds and punch scissors;

...

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Abstract

The invention relates to a rubber material for a sealing cover of an automatic injector and a preparation process thereof. The rubber material comprises a sealing plug and a sealing sleeve, wherein the sealing plug is prepared from the following components in parts by weight: 45 to 55 parts of silica gel C6-235, 45 to 55 parts of silica gel C6-265, 0.8 to 1.2 parts of 2,5-dimethyl-2,5-bis-(tert-butyl peroxide) hexane and 0.8 to 1.2 parts of carbon black; and the sealing sleeve is prepared from the following components in parts by weight: 95 to 105 parts of silica gel C6-235, 0.5 to 1.5 parts of 2,5-dimethyl-2,5-bis-(tert-butyl peroxide) hexane and 0.5 to 1.5 parts of carbon black. The process is simple, environmental pollution is avoided, production conditions are easy to control, the product quality is good, a small amount of dissolved substances are generated, the sealing sleeve does not need to be opened and directly enters the blood vessels of the human body together with the injection, and no harm is caused to the human body.

Description

Technical field [0001] The present invention relates to the field of rubber materials, and more particularly to an automatic syringe sealing cover rubber material and its preparation processes. Background technique [0002] Drug auto syringes are designed to usually in an emergency, the user can inject a predetermined dose of a predetermined dose by subcutaneous injection or intramuscular injection. The performance requirements of the rubber seal and sealing sleeve included in the auto syringe are very high. It is required to contain harmful solubles such as lead, mercury, arsenic, and barium. It does not work with the canned agent, and the bottle plug itself does not have a spray. Traditional medical bags need to detect heavy metal content, acid alkalinity, ammonium ion content, zinc ion content, volatile sulfide, and zinc oxide as a reinforcing agent and active agent, vulcanization due to common butyl rubber plugs The resin is used as a vulcanizing agent such that the zinc ion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K5/14C08K3/04
CPCC08L83/04C08K5/14C08K3/04C08L2203/02
Inventor 王明甫朱文力赵丽梅李丽琴
Owner 湖北华强药用制盖有限公司
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