Medicine packaging composite material and its preparing method

Abstract

The medicine packaging composite material has support layer and CO2 copolymer layer as blocking layer. The CO2 copolymer may be copolymer of CO2 and epoxy ethane, epoxy propane, cyclohexane oxide, styrene oxide, epoxy propane-epoxy cyclohexane, or expoxy propane-epoxy styrene. The three-layered and double-layered composite material is produced by means of the thermosol performance of CO2 copolymer and through rolling CO2 copolymer layer at 80-130 deg.c and combining with support layer. The composite material has excellent blocking performance, is degradable, transparent, easy to form and low in cost, and may be used in disposable packing of medicine.

Description

(1) Technical field

[0001] The invention relates to a packaging material and a preparation method thereof, in particular to a pharmaceutical packaging composite material and a preparation method thereof. (2) Background technology

[0002] We know that the composite materials used in the existing disposable drug packaging generally use aluminum foil and polyvinyl chloride or polyvinylidene chloride composite materials, aluminum foil as the support layer, polyvinyl chloride or polyvinylidene chloride as the barrier layer, and the middle layer A tie coat is required. The barrier layer is used to isolate oxygen and water vapor. From the aspects of material cost and barrier performance, polyvinyl chloride is generally used as the barrier layer of disposable pharmaceutical packaging materials. However, processing aids must be used in the processing of polyvinyl chloride, and there is a problem of precipitation of additives during use and storage, which aff...