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release paper and coated paper what is the difference?

Article provenance:未知 Popularity:Time:2020-05-06 22:48
Kraft paper tape manufacturers introduced that there are many people can not distinguish between coated paper and release paper. Today, I sorted out the relevant information for you, and made a detailed introduction from the production of coated paper to the process of release paper, and then to the difference between the two kinds of paper and their respective uses. I hope that we can solve the confusion for our half understood friends.
 
1、 Use of release paper and coated paper
 
Release paper is mainly suitable for all kinds of self-adhesive materials, high-grade double-sided tape, advertising materials, electronic die-cutting, etc;
 
First of all, what is coated paper?
 
Coated paper is the hot-melt PE plastic film evenly coated on the surface of the paper, forming coated paper, also known as PE paper or coated paper. Compared with ordinary paper, it is waterproof and oil-proof. It is mainly used to make food cartons, paper cups, paper bags and packaging, and can also be used as industrial waterproof paper.

2、 Difference between release paper and coated paper
 
Release paper is coated with a layer of silicon release agent on the basis of coated paper. The finished product is called release paper (silicone oil paper),
 
Coated paper is coated with a layer of PE film on the base material of base paper. The finished product is called coated paper, which is mainly applicable to packaging, food, medical treatment, electronics, hardware, die cutting, etc;
 
3、 What are the types of PE film?
 
The full name of the gonorrhea is "PE gonorrhea". There are two kinds of gonorrhea: 1. Light membrane, 2. Dumb membrane. The smooth film is a transparent PE film with bright surface, while the dumb film is a PE film with matte surface and no bright surface.
 
4、 Thickness and function of PE film
 
The thickness of PE film is calculated per square meter, and the conventional amount of film is 10-20 grams per square meter. However, according to the different requirements of use and the different uses of post-processing, appropriate amount of film can be applied. In the following, we will introduce some examples of quantitative requirements for film for several purposes: 1. If it is used for simple waterproof and moisture-proof packaging purposes, then 10 grams per square meter of film can meet the use; 2. If it is used for adhesive, it is recommended to select 12-15 grams per square meter of PE film; 3. If it is used for making cartons and is heat sealing (heat sealing), then the film thickness is required to be 18-20 grams per square meter Square meter is suitable.
 
5、 What are the advantages of PE coated paper?

First of all, ordinary paper is made of wood fiber, which has strong water absorption, so we all know that paper absorbs moisture and is afraid of moisture. The PE plastic is evenly coated on the paper surface after being hot-melt by the film machine to form a very thin film. Because it is hot-melt on the paper surface, it is not easy to be separated with the combination of labor and solid, and the whole process does not use any chemical solvent, which is very environmentally friendly. Moreover, in the later secondary processing of packaging materials, there is no need for adhesive, directly with the help of this PE film, under the hot-melt condition seal. It is often used in food packaging to prevent moisture and oil. The disposable paper bag, hamburger paper bag, melon seed bag, paper lunch box, food paper bag and aviation garbage bag we see in our daily life are made of this material.
 
6、 What are the main functions of coated paper in industry?
 
In industry, coated paper is mainly used for moisture and water-proof, often used to stick on the surface of building materials, to prevent moisture from entering the interior of the board. The types of coated paper are mainly divided into: single plastic PE coated paper and double plastic PE coated paper. At the same time, PE coated paper is also the main raw material for the production of plastic release paper. Release paper can be used as anti sticking material after being coated with silicon on coated paper or some high density paper. It is mainly used in the adhesive industry, where the adhesive is used, the anti adhesive material must be used.
 
7、 Why is silicone oil applied to coated and smooth paper surfaces?
 
Ordinary paper is composed of plant fiber. Generally, the surface of paper is not smooth and loose, so it is not suitable for directly coating silicone oil. When coating silicone oil, it will directly penetrate into the inside and back of paper, so the surface of paper needs to be treated in advance. There are two ways of treatment: one is to paint the surface of paper to form a thin PE plastic film layer to form coated paper; the other is to directly treat the surface of paper to form a high brightness and smooth surface to form grazin paper. There are many kinds of release paper. Compared with release film, it has low cost and wide application. It can be said that where pressure-sensitive adhesive is used, release paper must be used.

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