1.The origin of specialty paper
The name specialty paper only gradually spread after about the 1960s.
Some people call it special processing paper.
From 1945, the National Cash Register Company National Cash Register Co. The successful development of NCR.
Later, other paper continue to launch, open up people’s horizons and changed people’s traditional views on paper.
Raw materials are no longer limited to plant fibers, non-plant fibers such as inorganic fibers and synthetic fibers have also been used.
In addition to the structure of the fiber layer can interleave processing or increasing the number of layers applied.
And you can design the effect as needed. This was never thought of in the past.
However, the development of specialty paper faces many difficulties.
Such as capital investment, high equipment requirements, technical difficulties and so on.
At the same time, many specialty papers have narrow requests and small demand.
There is no climate in the short term, and it is waiting for people to explore.
At present, the output of domestic specialty paper is very low, far from meeting the needs of China’s specialty paper.
Due to the wide request range of this paper, the function and added value are high.
However, domestic paper factories are not very common, which hinders the development of China’s specialty paper.
2. The common specialty paper printing
- Screen Printing:
This is also orifice printing and screen printing.
Knead the ink through the holes of the orifice plate to print.
Can print any material on curved surfaces.
Such as banners, crystal, glass, metal, wood products, etc.
- Toppan Printing:
Use letterpress (that is, a printing plate with a raised image and text) for printing.
Referred to as embossing.
Can be used for wrapping paper, stickers, paper cups, etc.
- Gravure Printing:
Carve the square dots on the metal cylinder, store the ink, and transport it to the substrate.
Printing on tobacco and alcohol labels, stamps, coins, sugar paper, high-grade plastics, etc.
- Offset Printing:
It is the graphic portion and the non-image areas on the plate just in one plane, using the theory of an ink repelling water handling, printed onto the substrate.
It is the most common way of printing.
Can be used for printing newspapers, packaging, posters, books, etc.
Specialty paper and pulp layers is the bottom surface of papermaking pulp made.
Therefore, the slurry is generally divided into surface slurry (surface layer), two layers, three layers, and four layers.
Each layer of fiber pulp material ratio is different, and each layer pulp fiber furnish, but also vary according to the quality of the copy paper.
It is a more upscale specialty packaging paper.
Printing various trademarks and packaging boxes, such as: children’s toys, medicines, food, cigarette boxes, gift boxes, etc.
There are two types of whiteboard paper, special grade and universal, and there are single-sided and double-sided.
Paper with a bright white and smooth, uniform thickness, texture closely, not from powder hair loss.
Water content.
Specialty paper has high water content.
This paper moisture content is generally about 10%, because the constraint thick paper, lifting equipment and the time to dry.
Therefore, most printing companies print without hanging.
However, the choice of method is often a pre-printed with water to reduce galling and elastic phenomenon.
Printing
In general, special papers are mostly printed on the spot during the printing process, and the amount of ink used is large.
In order to reduce the phenomenon of galling, to strictly control the thickness of the printing ink layer and the viscosity of the ink to prevent reverse ride dirty.
The solid ink color of the printed product is weakening process.
Single-sided specialty paper will simply curl up when wet, which will affect the offset printing. However, double-sided specialty paper is better.
Because the paper is relatively solid, the paper will simply appear as double or multiple sheets, and the eraser will be easily crushed when it is tilted.
Difference between specialty paper and coated paper, offset paper, wherein the paper sheet relief grams of weight, more solid sheets.
3. Present and future of specialty paper industry
Specialty paper refers to certain properties and uses.
Suitable for special use, some types of paper with a small quantity and high added value.
The paper is used herein in a broad sense special paper, including plain paper processing, paper and special paper functions.
Usually, the processing method and process of coated paper is the focus.
However, specialty paper emphasize the special process, raw materials or paper (paper) employed in the papermaking process.
Specific use obtained through processing.
Functional paper emphasizes the function of paper, and functional paper is a functional material in a sense.Specialty paper
Specialty paper is a high-tech product in the paper industry.
At present, it has developed into an indispensable basic material in modern packaging, information, biology, electrical, construction, building materials and decoration industries.
Widely used in industry, agriculture, health care, food and paper, agriculture.
The rapid development momentum.
I hope this article will give you some help. If you have new ideas, we can discuss together.
