Multilayer co-extrusion transfusion film and manufacturing method thereof

Abstract

The invention discloses a multi-layer common squeeze transfusion film and its manufacturing method. It has five layers structure, the first layer is the heat sealing inner layer A, which is the mixing resin composed of PP and SEBS hot plastic elastic polymers; the second layer is the adhering layer B, which is propene-ethylene polymers; the third layer is the core layer, which is the propene-ethylene / a-olefin elastomer; the fourth layer is the adhering layer D, which is the ethylene methyl acrylic resin polymers; the fifth layer is the wearable layer, which is the elastic resin PTMT. The manufacturing method is to implement high-energetic electronic radiation treatment to the multi-layer film so as to improve the heat-fast capability and the transparent degree of the products.

Description

Technical field [0001] The present invention relates to a multi-layer co-extruded film made of polymer materials and a manufacturing method thereof, and more specifically, to a multi-layer co-extruded infusion film used as a packaging material for infusion or blood in the medical field and its manufacture method. Background technique [0002] In the past, the most commonly used packaging material for similar medical supplies such as infusion or blood is soft polyvinyl chloride. Because it needs to add various additives during processing to improve its performance, the migration of small molecule additives and polyvinyl chloride The chlorine contained in it causes soft PVC to release components harmful to human health from processing to recycling. In order to ensure the safety of people’s medication, and in accordance with the requirements of environmental protection, the drug regulatory authorities of my country and the world have set very high quality standards for medicinal pac...

AI Technical Summary

Problems solved by technology

Most of the existing technology adopts the traditional process of down-blowing water cooling. Needless to say, it is troublesome to place the extruder on the equipment with a height of more than 6 meters. It is also very difficult to take several tons of materials per day during mass production.

More importantly, the problem that cannot be solved at present is that the hygienic indicators of the down-blown water cooling cannot meet the requirements of the national standard

We all know that microorganisms are easy to grow and breed in a constant temperature, moisture and humid environment, so the limit of microorganisms is not well controlled, and the hygienic indicators cannot pass. At present, several water-cooled down-blown infusion production lines introduced in China have not been able to mass produce so far. No matter how good the theory of a product unacceptable by a pharmaceutical factory is, it is useless

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