Polylactic acid film material for small packaging of traditional Chinese medicine decoction pieces and preparation method of polylactic acid film material

Abstract

The invention relates to a polylactic acid film material for small packaging of traditional Chinese medicine decoction pieces and a preparation method of the polylactic acid film material. The polylactic acid film material is mainly prepared from the following raw materials in parts by weight: 80 parts of polylactic acid, 4.0-5.0 parts of poly succinic acid-butanediol ester, 10-12 parts of polycaprolactone, 4.0-5.0 parts of epoxidized soybean oil, 0.40-0.50 part of nano SiO2, 0.45-0.55 part of nano ZnO, 0.45-0.55 part of nano kaolin, 0.40-0.50 part of nano TiO2, 1.0-1.2 parts of an amino silane coupling agent, 0.30-0.40 part of stearate, and 0.40-0.45 part of an antioxidant. According to the polylactic acid film material, good mechanical strength and toughness are achieved, obstructing performance on oxygen and water vapor is achieved, an addition agent is not prone to removing and dissolving out, bag making processing is easy, the polylactic acid film material is suitable for use andpopularization in the field of the small package traditional Chinese medicine decoction pieces, rapid degradation can be achieved in the environment, and the safety and reliability are achieved.

Description

technical field [0001] The invention belongs to the technical field of small-package decoction pieces of traditional Chinese medicine, and specifically relates to a polylactic acid film material for small package of decoction pieces of traditional Chinese medicine, and also relates to a preparation method of the polylactic acid film material for small package of decoction pieces of traditional Chinese medicine. Background technique [0002] Chinese herbal decoction pieces are traditional Chinese medicines that can be directly used in TCM clinics after processing and processing Chinese medicinal materials according to TCM theories and processing methods. They are the main means of TCM clinical dialectical treatment. The traditional adjustment method of traditional Chinese medicine decoction pieces is to use bulk decoction pieces, which are distributed according to the prescription of traditional Chinese medicine. Due to the different sizes of decoction pieces, it is difficult...

AI Technical Summary

Problems solved by technology

The compatibility between the content of the three and the packaging materials is different, and the requirements for air and water resistance are different. It is not appropriate to learn from each other for packaging materials.

[0005] In the course of long-term use, it has been found that the use of polyolefin film packaging bags to seal and package Chinese herbal decoction pieces has the following problems: the polymer itself of the polyolefin plastic film packaging bag material is not toxic, but its monomer molecules such as vinyl monomers are toxic. The chemical additives in polymer film forming, such as plasticizers, antioxidants, stabilizers, colorants, lubricants, antistatic agents, etc., contain toxic substances, which are easy to migrate into Chinese medicine decoction pieces during use, affecting medicinal safety Poor compatibility between polyolefin plastic film and some traditional Chinese medicine materials, chemical reactions will occur after long-term contact, such as traditional Chinese medicine containing spicy volatile oil, honey water or sugar, etc., react with polyolefin and change, causing deterioration or Toxicity affects the quality and efficacy of medicines; polyolefin plastic films usually have high moisture permeability, and Chinese herbal medicines inside the packaging are prone to deterioration and deliquescence, bacterial growth, mold and insects, resulting in deterioration of medicinal materials

In addition, polyolefin packaging bags are slow to degrade in the environment, and it is easy to cause environmental pollution after being used in large quantities and discarded

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