High-barrier multi-layer coextrusion composite infusion film

Abstract

The invention relates to a high-barrier multi-layer coextrusion composite infusion film. The high-barrier multi-layer coextrusion composite infusion film is a five-layer composite film and from the outer layer to the inner layer, the composite film consists of the following ingredients: polyethylene naphthalene modified polyester / ethylene acrylic acid polymer / polypropylene, ethylene-octene copolymer mixture resin / ethylene propene polymer / modified polypropylene. The advantages of various functional polymers are combined in the composite infusion film; the light transmittance, flexibility, high-barrier property, low-temperature heat sealing performance, heat sealing strength and the like of the film are ensured, the high-temperature resistant (121 DEG C, 30min) sterilization, and moreover the low-temperature resistant (minus 30 DEG C) storage performance of the film are improved, so that the dissolved matter (nonvolatile matter, readily oxidizable matter, heavy metal and the like) of the infusion film are very little; the infusion film neither generates biological and chemical reaction with liquid medicine after encapsulation sterilization, nor produces toxin or causes environmental pollution when in production, use and recovery. Compared with other similar products, the infusion film has huge competitive advantages on various technical indicators such as a production formula, a production technology and performance.

Description

technical field [0001] The invention relates to the technical field of medical polymer materials, in particular to a high-barrier transfusion membrane. Background technique [0002] Plastic soft bag infusion can realize fully enclosed infusion, completely avoiding air pollution during infusion. It is the main packaging form of infusion packaging at present. Based on the existing technical level, the commonly used intravenous infusion drug packaging bag in practice is made of soft polyvinyl chloride (PVC) composite film. [0003] The glass transition temperature (Tg) of PVC is high, the material is hard, and it is difficult to process and shape. Therefore, plasticizers and other additives are generally added to PVC resin. At present, dioctyl phthalate (DOP) is still used as the main plasticizer in processing. However, DOP is a low-molecular substance, which is easy to migrate and precipitate. DOP plasticized PVC is used in medical catheters or containers, because DOP is e...

AI Technical Summary

Problems solved by technology

The dry lamination process is characterized by simple operation and flexible interlayer collocation, but its biggest defect is that the surface tension of the adhesive layer is relatively high. Although the adhesive solvent is dried with a large power, it is inevitable that there will be solvent residues. , and waste of energy, dry waste gas and volatilization of organic solvents will also pollute the environment

There is no solvent residue in the compounding process of solvent-free compounding, and there is no exhaust gas emission to pollute the environment. However, due to various factors such as unstable control of the ratio of the main agent and curing agent, and complex compounding process conditions, it has not been widely used.

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