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Piston for disposable sterile syringe and manufacturing method of piston

A manufacturing method and a technology for a syringe, which are applied in the field of medical devices, can solve the problems of high process cost, limited industrial scale production and application, etc., and achieve the effects of simplified process, excellent biological performance indicators, and good anti-aging performance.

Inactive Publication Date: 2015-03-04
丹阳市金晟医用橡塑制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this will result in excessively high process costs, which limits the application of industrial scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method of manufacturing a plunger for a disposable sterile syringe, the method of manufacturing comprises the following steps:

[0026] (1) Ingredients: Accurately weigh 2.5kg of active zinc oxide, 1.5kg of stearic acid, 2.0kg of environmentally friendly anti-aging agent 1010, 15kg of carbon black N330, 60kg of calcined clay, 3.0kg of medical vaseline, 0.6kg of accelerator TMTM, accelerator TRA 0.5kg, sulfur 2.0kg, mixed evenly for later use;

[0027] (2) Masticating and mixing: Accurately weigh 100kg of natural rubber or synthetic rubber, and after masticating according to the traditional rubber process method, knead together with the uniformly mixed raw materials in step (1);

[0028] (3) Film production: Put the raw materials mixed in step (2) into the film output machine to make film;

[0029] (4) Vulcanization: Put the film made in step (3) into a forming mold, put the mold into a vulcanizing machine, and vulcanize for 210 to 240 seconds at a temperature of 165°...

Embodiment 2

[0033] A method of manufacturing a plunger for a disposable sterile syringe, the method of manufacturing comprises the following steps:

[0034] (1) Ingredients: Accurately weigh 1.3kg of zinc oxide, 1.0kg of stearic acid, 1.5kg of environmentally friendly anti-aging agent 1010, 55 kg of carbon black N330, 55kg of calcined clay, 2kg of medical vaseline, 0.4kg of accelerator TMTM, and 0.4kg of accelerator TRA0 .3kg, sulfur 1.0kg, mixed evenly for later use;

[0035] (2) Plasticating and mixing: Accurately weigh 100kg of isoprene synthetic rubber, perform plasticizing according to the traditional rubber process, and then mix with the homogeneously mixed raw materials in step (1);

[0036] (3) Film production: Put the raw materials mixed in step (2) into the film output machine to make film;

[0037] (4) Vulcanization: Put the film made in step (3) into a forming mold, put the mold into a vulcanizing machine, and vulcanize for 210 to 240 seconds at a temperature of 165°C to 175°...

Embodiment 3

[0041] A method of manufacturing a plunger for a disposable sterile syringe, the method of manufacturing comprises the following steps:

[0042] (1) Ingredients: Accurately weigh 1.0kg of active zinc oxide, 0.5kg of stearic acid, 1kg of environmentally friendly anti-aging agent 1010, 10kg of carbon black N330, 50kg of calcined clay, 1.5kg of medical vaseline, 0.2kg of accelerator TMTM, and 0.2kg of accelerator TRA kg, Accelerator CZ 0.3kg, Sulfur 1.5kg, mixed evenly for later use;

[0043] (2) Plasticating and mixing: Accurately weigh 100kg of isoprene synthetic rubber, perform plasticizing according to the traditional rubber process, and then mix with the homogeneously mixed raw materials in step (1);

[0044] (3) Film production: Put the raw materials mixed in step (2) into the film output machine to make film;

[0045] (4) Vulcanization: Put the film made in step (3) into a forming mold, put the mold into a vulcanizing machine, and vulcanize for 210 to 240 seconds at a tem...

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Abstract

The invention discloses a piston for a disposable sterile syringe. The piston is prepared from the following raw materials in parts by weight: 1.0-2.5 parts of activated zinc oxide, 0.5-1.5 parts of stearic acid, 1.0-2.0 parts of environment-friendly anti-aging agent 1010, 10-15 parts of carbon black N330, 50-60 parts of calcined clay, 1.5-3.0 parts of petroleum jelly for medical purposes, 0.2-0.6 part of accelerant TMTM, 0.2-0.5 part of accelerant TRA, 1.0-2.0 parts of sulfur and 100 parts of isoprene synthetic rubber. The manufacturing method comprises the following steps: taking the raw materials as ingredients, mixing with the isoprene synthetic rubber, respectively manufacturing rubber sheets, manufacturing a semi-finished product, removing flashes, cleaning, drying and checking. The piston for the disposable sterile syringe, which is made of the isoprene synthetic rubber, is excellent in biological performance index, good in ageing resistance, high in resilience force and excellent in self-sealing performance, a pyrogen reaction is avoided, lots of energy is saved, and the environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a piston for a disposable sterile syringe made of isoprene synthetic rubber and a manufacturing method thereof. Background technique [0002] With the development of the medical device industry, the technological progress of disposable medical devices is changing with each passing day. As a supporting seal for disposable sterile syringes, piston products for disposable sterile syringes are increasingly facing tremendous pressure to upgrade their technical quality. Such products at home and abroad are traditionally made of natural rubber, but natural rubber contains organic protein, and the biological safety of the finished product is poor. Some foreign medical experts have suggested that the protease produced by organic protein is a harmful substance that may cause allergic reactions in patients. To remove the organic protein in natural rubber, it is necessar...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08K13/02C08K3/34C08K3/04C08K3/22C08K5/09C08K5/01C08K3/06B29C35/02
CPCC08K13/02B29C35/02C08K3/04C08K3/06C08K3/22C08K3/346C08K5/09C08K2003/2296C08L9/00
Inventor 桂双才
Owner 丹阳市金晟医用橡塑制品有限公司
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