Plastic-free environment-friendly isolation paper, plastic-free environment-friendly release paper as well as preparation method of plastic-free environment-friendly isolation paper and plastic-free environment-friendly release paper

Abstract

The invention belongs to the field of papermaking technology, and particularly relates to a plastic-free environment-friendly isolation paper and a plastic-free environment-friendly release paper used for the industry fields of food hygiene, pharmaceutical packaging, electronic appliances, household products, cosmetics, supermarket logistics, post express and the like and a preparation method of the plastic-free environment-friendly isolation paper and the plastic-free environment-friendly release paper. The technical scheme is as follows: the isolation paper is composed of a 30-60g / m<2> low-weight tissue paper or a 50-200g / m<2> cultural paper, and a precoating layer and an isolation layer coated in sequence on the tissue or cultural paper surface, wherein a layer of precoating is coated on the front face of the base paper firstly and then a layer of isolation layer is coated into the precoating layer; the release paper is formed by coating a solvent-free silicone oil onto the isolation paper and comprises the base paper layer, the precoating layer, the isolation layer and the silicone oil layer from top to bottom in sequence. The paper prepared by the method provided by the invention has the characteristics of low requirements for base paper performance, good isolation (release) effect, high paper smoothness, no pollution, easiness of recycling, stable properties and the like. The production process has the advantages of low manufacture cost, high production efficiency, easiness of mass production and the like.

Description

technical field [0001] The invention belongs to the technical field of papermaking, in particular to a plastic-free environmentally friendly release paper, a plastic-free environmentally friendly release paper and its Preparation. Background technique [0002] Traditional release paper is composed of base paper and release layer. Its preparation process is to coat a layer of release agent (commonly known as lamination film) on the surface of base paper, and the release agent used is generally polyethylene (PE), whether it is lamination film or CN201010166004. The production of release paper by coating method as mentioned in "Technology" requires the use of polyolefin (PE or PP). After this type of polyolefin is coated on the paper, it is very difficult to treat the paper with traditional recycling methods. In addition, because polyolefin products It has low biodegradability and may also be harmful to the environment. [0003] Release paper, also known as silicone oil pape...

AI Technical Summary

Problems solved by technology

There is a plastic release paper, that is, a layer of release agent (mainly silicone oil) is coated on the surface of the coated paper. Due to the use of polyolefin products, it is very difficult to treat paper with traditional recycling methods. In addition, due to the use of polyolefin products Low biodegradability and may also be harmful to the environment

Plastic-free release paper mainly includes glassine, CCK and other specially treated release papers. This type of release paper has the advantages of high smoothness, good oil resistance, and less release agent consumption during coating. The price is expensive, the supply of goods is in short supply, and it is difficult to meet the needs of production and economic benefits

Low-weight release paper for postal express delivery also belongs to the category of plastic-free release paper. This type of release paper has high quality requirements and a large market demand. However, there are not many products with good quality and high production efficiency on the market. Although a novel preparation method is mentioned in CN200910073834.4 "Released Paper for Postal Express Bags and Preparation Method", it must select high technical index requirements, good quality coated paper, and release agent There are still deficiencies in consumption, release effect, production efficiency, etc.

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