Self-lubrication composite material used for producing easy-folding outer covers of infusion bottles or bags

Abstract

The invention belongs to the technical field of materials for infusion bottles or bags and discloses a self-lubrication composite material used for producing easy-folding outer covers of infusion bottles or bags and the application of the self-lubrication composite material in the medicine packing materials. By weight, the self-lubrication composite material comprises the following components: 55-94 parts of polypropylene, 1-20 parts of polyethylene, 1-20 parts of flexibilizers, 2-25 parts of lubrication resin and 0.1-4 parts of antioxidants. The lubrication resin is composed of at least one of ethylene, norbornene copolymer, 1,1,2,3,3,3-hexafluoropropylene-1-propylene and 1,1-polyvinylidene floride copolymer master batches. Polypropylene is adopted as the main material so that the self-lubrication composite material can ensure the welding intensity. The lubrication resin and the substrate have good compatibility so that the self-lubrication composite material has good temperature resistance, biological fitness, chemical inertness and high lubricity, enables the static friction coefficient to be as low as 0.381, the dynamic friction coefficient to be as low as 0.343, and the yellow color index after 25 kGy doses of 60 Co-gamma ray radiation to be smaller than and equal to 9.

Description

technical field [0001] The invention belongs to the technical field of materials for infusion bottles or bags, and in particular relates to a self-lubricating composite material for making easy-fold outer covers for infusion bottles or bags and its application in medical packaging materials. Background technique [0002] In recent years, my country's medical infusion plastic packaging industry has developed rapidly, gradually replacing traditional glass packaging, and there are more and more styles of infusion packaging. Present infusion bottle or bag combination cover generally comprises outer cover, inner cover and the rubber stopper that is installed between inner and outer cover. These three parts are assembled on the cover assembly machine. Specifically, the inner cover, rubber plug and outer cover are transported to the assembly module by their respective tracks to complete the assembly. [0003] The covers currently in use mainly include two types of pull-ring type c...

AI Technical Summary

Problems solved by technology

On the basis of the research on the pull ring type outer cover material for infusion bottles or bags, the inventor further studies the easy-fold outer cover material and finds that the following problems need to be solved: (1) during long-distance transportation, especially in the northern winter , the handle of the easy-fold outer cover is easy to be bumped and opened naturally; (2) The easy-fold outer cover has a lot of friction on the cover assembly machine, and the cover assembly speed cannot be increased, which affects production efficiency

[0005] The invention patent of CN100404606C discloses a kind of adopting polypropylene resin (PP) to add polyethylene (PE), polyolefin elastomer (POE) and KN resin to prepare infusion bottle cap material, by adding appropriate amount of polyolefin elastomer (POE) Solve the problem of high brittleness and insufficient toughness of polypropylene resin, but it does not endow the surface of the product with self-lubricating properties

The easy-fold outer cover prepared by the former is hard and brittle, not cold-resistant, and has poor impact resistance; while the easy-fold outer cover prepared by the latter has high surface friction, and the transportation on the cover assembly machine is not smooth, which affects production efficiency

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