Preparation method of modified casting polypropylene film and easy-to-tear PET-AL-CPP medicine-packaging composite film

A technology of casting polypropylene and polypropylene, applied in the directions of pharmaceutical packaging, packaging, household packaging, etc., can solve the problems of poor tear straightness, liquid medicine splashing, difficult to tear, etc., so as to reduce the heat sealing temperature and alleviate the bad Influence and improve the effect of heating uniformity

Inactive Publication Date: 2020-09-29
SICHUAN HUILI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the CPP in the existing PET-AL-CPP composite film has good toughness, after being made into a flexible packaging bag for packaging liquid medicines, it is not easy to tear, and the tearing linearity is poor, which is easy to cause liquid medicines splash or side leakage

Method used

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  • Preparation method of modified casting polypropylene film and easy-to-tear PET-AL-CPP medicine-packaging composite film
  • Preparation method of modified casting polypropylene film and easy-to-tear PET-AL-CPP medicine-packaging composite film

Examples

Experimental program
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Effect test

Embodiment 1

[0045]Preparation of modified cast polypropylene:

[0046] 8 parts of phenolic resin and 90 parts of polypropylene are stirred and mixed and banburyed to obtain a mixture of polypropylene outer layers, and 3 parts of silica-coated alumina nanomaterials are added to 97 parts of polypropylene resin to blend, melt and then make The mixture of the polypropylene inner layer is obtained from the particles, and the particle diameter of the silica-coated alumina nanometer material is 50-150nm.

[0047] The polypropylene outer layer compound and the polypropylene inner layer compound are respectively added to the extruder, melted at 220°C, cast through a T-shaped die, and finally quenched by a cooling roll to form a film. The temperature of the T-die was 210°C.

[0048] The preparation method of the silica-coated alumina nanometer material adopts the chemical vapor deposition technology of the prior art.

[0049] Preparation of PET-AL-CPP Composite Film for Pharmaceutical Packaging ...

Embodiment 2-5

[0057] In order to verify the impact of silica-coated alumina nanomaterials on the performance of CPP, under the same conditions as in Example 1, Examples 2-5 set different mass ratios of the inorganic phase to the amount of polypropylene in the inner layer of polypropylene

Embodiment 2

[0059] No silica-coated alumina nanomaterials.

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Abstract

The invention discloses a preparation method of a modified casting polypropylene film and an easy-to-tear PET-AL-CPP composite film. The invention aims to solve the problems that CPP in an existing PET-AL-CPP composite film is good in toughness and a flexible packaging bag prepared from the existing PET-AL-CPP composite film and used for packaging a liquid medicine is not easy to tear, poor in linear tearing performance and prone to causing splashing or side leakage of the liquid medicine. The preparation method of the invention comprises the following steps: adding 1-5 parts of a silicon dioxide coated aluminum oxide nanomaterial into 95-97 parts of polypropylene resin, and carrying out blending, melting and granulating to obtain a polypropylene inner-layer mixture; and 2, extruding polypropylene outer-layer resin and the polypropylene inner-layer mixture of obtained in the step 1 to obtain the polypropylene film. The film prepared in the invention has the advantages of good comprehensive performance, easiness in tearing, good linear tearing performance and the like.

Description

technical field [0001] The invention relates to the technical field of medicine packaging, in particular to a preparation method of a modified cast polypropylene film and an easy-to-tear PET-AL-CPP medicine packaging composite film. Background technique [0002] At present, the commonly used liquid medicine packaging is rigid packaging, including glass bottles and plastic containers made of composite hard sheets. Glass bottles have the disadvantages of being heavy and fragile, while plastic containers generally need a bottom bracket as a support for plastic containers. During use, it is necessary to unscrew the top of the plastic container, and then squeeze the liquid out for oral administration, which requires many materials and is inconvenient to use. [0003] In order to improve the convenience of liquid packaging, a few companies have proposed strip-shaped composite film bags for liquid packaging. However, since flexible packaging contains liquid medicines, the barrier p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/06B32B15/20B32B15/09B32B15/085B32B27/32B32B27/42B32B27/20B32B7/12B32B33/00C08L23/12C08K9/10C08K3/22C08J5/18A61J1/10A61J1/14B29D7/01
CPCA61J1/10A61J1/1475B29D7/01B32B7/12B32B15/085B32B15/09B32B15/20B32B27/20B32B27/32B32B27/36B32B27/42B32B33/00B32B2307/31B32B2307/582B32B2439/80C08J5/18C08J2323/12C08K9/10C08K2003/2227C08K2201/011
Inventor 张辉李中明肖瑶
Owner SICHUAN HUILI IND
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