Cast polypropylene film for pharmaceutical powder packaging

A technology for casting polypropylene and packaging, which is applied in packaging, packaged food, household packaging, etc., can solve the problems such as the adhesion of medicinal powder to the inner wall of the packaging bag, reduce the dosage of patients, and increase the cost of treatment for patients, so as to reduce aggregation and stickiness. junction, reduce solvent residues, and facilitate the effect of storage

Active Publication Date: 2021-06-18
浙江大汇新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing medicine powder packaging bag is in use, the medicine powder will adhere to the inner wall of the packaging bag during the process of pouring the medicine powder out of the packaging bag, and some medicine powder in the packaging bag is difficult to pour out
This not only wastes the medicinal materials, but also reduces the dosage of patients, which affects the therapeutic effect, and the medicinal materials that are powdered are often relatively expensive medicinal materials, which also increases the treatment cost of patients.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]This embodiment relates to a casting polypropylene film for packaging medicine powder, including a corona layer, a core layer and a heat-sealing layer, the thickness of the film is 60 μm, and the corona layer is a random copolymer of butene and polypropylene, accounting for 100 μm of the film thickness. 10% of. The core layer is located between the corona layer and the heat-sealing layer, accounting for 75% of the film thickness, using a polypropylene / ethylene-ethylene copolymer blending raw material with an ethylene-vinyl alcohol copolymer content of 12wt%, and ethylene-vinyl alcohol copolymer The ethylene content in the product is 35wt% of the ethylene-vinyl alcohol copolymer. The heat-sealing layer adopts modified polypropylene, which accounts for 15% of the total thickness of the film. The raw materials of the modified polypropylene are composed of 95 parts of polypropylene, 5 parts of polyethylene glycol and 3 parts of nano silicon dioxide by weight.

[0038] The p...

Embodiment 2

[0047] This embodiment relates to a cast polypropylene film for packaging medicine powder, comprising a corona layer, a core layer and a heat-sealing layer, the thickness of the film is 70 μm, and the corona layer is a random copolymer of ethylene and polypropylene, which accounts for 10% of the film thickness. 15%. The core layer is located between the corona layer and the heat-sealing layer, accounting for 70% of the film thickness, using a polypropylene / ethylene-ethylene copolymer blending raw material with an ethylene-vinyl alcohol copolymer content of 15wt%, and ethylene-vinyl alcohol copolymer The ethylene content in the product is 30wt% of the ethylene-vinyl alcohol copolymer. The heat-sealing layer is made of modified polypropylene, accounting for 15% of the total thickness of the film. The raw material of the modified polypropylene is composed of 98 parts of polypropylene, 6 parts of polyethylene glycol and 4 parts of nano-silica by weight. Surface grafting and chito...

Embodiment 3

[0057] This embodiment relates to a cast polypropylene film for packaging medicine powder, including a corona layer, a core layer and a heat-sealing layer, the thickness of the film is 80 μm, and the corona layer is a random copolymer of butene and polypropylene, accounting for 100 μm of the film thickness. 15%. The core layer is located between the corona layer and the heat-sealing layer, accounting for 65% of the film thickness, using a polypropylene / ethylene-ethylene copolymer blending raw material with an ethylene-vinyl alcohol copolymer content of 18wt%, and ethylene-vinyl alcohol copolymer The ethylene content in the product is 25wt% of the ethylene-vinyl alcohol copolymer. The heat-sealing layer is made of modified polypropylene, accounting for 20% of the total thickness of the film. The raw material of the modified polypropylene is composed of 102 parts of polypropylene, 8 parts of polyethylene glycol and 5 parts of nano-silica by weight. Surface grafting and chitosan...

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PUM

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Abstract

The invention relates to a cast polypropylene film for medicine powder packaging, which belongs to the technical field of cast polypropylene film, and aims to solve the problem of the adsorption and adhesion of medicine powder on the film, and the technical solution adopted is a cast polypropylene film for medicine powder packaging The film comprises a corona layer, a core layer and a heat-sealing layer, the corona layer adopts binary random copolymerized polypropylene, the core layer adopts polypropylene and ethylene-vinyl alcohol copolymer blending raw materials, and the heat-sealing layer The layer adopts modified polypropylene, and the heat-sealing layer is treated with surface grafting and chitosan modification. The invention has the effects of excellent antistatic performance and good barrier performance, and when used for packaging medicinal powder, the phenomenon of medicinal powder sticking to walls is obviously reduced.

Description

technical field [0001] The invention relates to the technical field of casting polypropylene film, in particular to a polypropylene film for packaging medicine powder. Background technique [0002] Traditional Chinese medicine powder refers to a powder medicine made by pulverizing and mixing one or several medicines. The powder has the characteristics of large specific surface area, easy dispersion and quick effect, and the preparation method is simple and convenient to use. With the development of science and technology, the equipment used for powdering traditional Chinese medicine has become more and more advanced and perfect, and powders with specifications such as ultra-fine powder and ultra-fine powder have gradually appeared. It has become a popular specification of decoction pieces in Chinese medicine clinics, especially the more expensive medicinal materials in traditional Chinese medicine, which are usually crushed and taken to achieve full utilization of the medic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08J7/16B32B27/08B32B27/32B32B27/30B32B27/20C08L23/12C08L71/02
CPCB32B27/08B32B27/20B32B27/306B32B27/32B32B2250/03B32B2250/24B32B2307/21B32B2307/558B32B2307/7145B32B2307/728B32B2439/80C08J7/12C08J7/123C08J7/16C08J2323/12C08J2405/08C08J2471/02
Inventor 柳金亭蒋维汪学志邓德强
Owner 浙江大汇新材料有限公司
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