- Dec 23, 2017 -
Release paper classification, can be classified into plastic release paper and non-plastic release paper; also classified by release agent silicone release paper and non-silicone release paper.
Plastic release paper, because the release agent has a certain permeability, if there is no barrier, the release agent will penetrate into the interior of the paper, resulting in poor curing and the release agent is too large (high cost) and many other undesirable factor. So need to do plastic coating on paper (commonly known as lamination), the domestic general use of polyethylene (PE) particles for lamination, the melt index required at 7 or so, the domestic PE particles are generally selected Yanshan Petrochemical 1C 7A. Divided into single-plastic release paper and double-plastic release paper; Plastic-free release paper, there are Gela Xin, CCK and other special treatment by the other release paper.
1 . Lamination release paper
After the base paper by Lin Mo, in the coating surface coated release agent, produced from the release paper.
Because the paper surface has paper and fiber, so the film must be to a certain amount, in order to ensure that there is no point of penetration, in order to ensure that silicone oil will not penetrate into the paper, in order to ensure that there will be no peeling bad. General Lin Mozhi Linmo amount of 16 grams per square meter, is said to have Wenzhou area of 11 to 13 grams per square meter, very close to foreign advanced equipment Linmo data. In theory, as long as the tape can be peeled off from the release liner, a low amount of lamination is acceptable.
Lamination release paper is divided into single and double shower. General single-sided release paper is a single shower, of course, there are double-dipped single-sided release paper, because the release liner thicker generally 20 grams, generally 15 grams away from the profile is generally thin, so the release paper smooth.
If it is two-sided lamination volume are 22 grams of coated paper, then more suitable for double-sided release paper.
Lamination release paper are generally used in all wood pulp paper, especially the electronics industry. If you use straw pulp paper, there will be a lot of confetti in the die-cutting and easy to edge broken.
All wood pulp paper is generally called kraft paper, such as natural kraft paper (commonly known as: the cow), white kraft paper (commonly known as: white cow), yellow kraft paper (commonly known as: Japan yellow cauliflower), blue kraft paper (commonly known as: Indonesia blue color cattle).
Of course, also useful all-wood double-coated paper to do the base paper, more useful photographic paper base paper, and the use of coated paper and white paper, cattle card, milk card, etc. Paper made of paper.
As long as the paper-coated plastic foam fastness to meet the requirements, as long as the coating is not infiltration point, even the lamination film, what should be said that paper can be made of paper.
2 . Gela Xin release paper
Gela Xin base paper after over-pressure coating release agent produced after the release paper.
Grasing because after super calendar, the paper's compaction is very good, especially for die-cutting plant.
As domestic Gela Xin can only produce 60 to 80 grams of quantitative, and die-cutting plant prefer to use more than 100 grams of quantitative, such as 120 grams, 140 grams. Has a certain degree of transparency, stiffness and good, die-cutting performance and good. All rely on imports of base paper, but since the amount of imported base paper is 20 tons per container, and must be 3 months in advance booking, ordering full payment. There are many domestic coating suppliers feel that there is no point in making sense.
3. CCK release paper
CCK base paper is coated with a layer of special clay after coating release agent, produced from the release paper.
Because of its high temperature performance is particularly good, is widely used in the carbon fiber industry.
CCK base paper on the surface of the clay can easily destroy the silicone, so the CCK release paper produced in China can still really pass a few.
4. Other release paper
In addition there are some release paper is widely used in many industries, but also do not use release agent. For example, a label printing plant often needs to have a layer of varnish on its place of release, and it will also have a certain release ability, of course, the performance of the glue is very weak. Otherwise, this ability to leave is futile. Others use a number of special glue and other formulations produced release paper accounted for the overall market share is very small.
The genuine paper used in the electronics industry, which is produced by the regular factories, has stable quality and guaranteed supply of release paper, is mainly used mainly for garbled paper (once used abroad, or the paper with quality defects). Glue factory basically use genuine paper.