KT boards can be used for children’s printmaking, which is both convenient and safe. Because of its soft texture,

can be carved with pencils, toothpicks, wooden sticks, etc.

KT board is a new type of material made of PS particles that are foamed to form a board core and then surface-coated and pressed. The board is crisp, light, not easy to deteriorate, easy to process, and can Directly screen printing on the board (screen printing board), paint (paint adaptability needs to be tested), mounted with adhesive pictures and inkjet printing, widely used in advertising display promotions, architectural decoration, culture, art and packaging, etc.

In advertising, it is used for mounting lining boards for exhibitions, displays and announcements to release product promotional information. In addition, it is widely used in screen printing, which is especially suitable for large-scale unified publicity. Activity use. Size: ranging from 0.9m to 1.2m wide, usually 2.4m long.

Extended information

KT boards can be divided into cold lamination and hot lamination from the relatively mature production process. The products produced by these two different processes are called (cold lamination). Composite panels) cold panels and (thermal composite panels) hot panels.

The manufacturing process of cold plates is to first foam the board core. However, since most cold boards are single-layer board cores, double foaming is required. The thickness of the first foaming is generally about 3 mm. , after curing for half a month, perform the second foaming, and put the core on the equipment to foam to about 5 mm. After the second foaming, it can be directly glued and bonded.

But there is a problem here. The cold plate often bubbles. Why? Because the maturation period of the board core is too short, there is a problem with the neutral glue or there is a mistake in the glue application, and the board is exposed to direct sunlight or ultraviolet light after it is completed.

The manufacturing process of the hot plate is to first foam the PS particles into a board core of about 2 mm through equipment. At this time, the board core is a coiled material and is left at room temperature for almost half a month, and then the waste gas from the board core is It is discharged and then laminated. It is to place two large rolls of stretched PS dough and two large rolls of mature board core at the same time on the equipment. They are fused and pasted together through the mold of the equipment to form a complete board.

Finally, the whole package is carried out. When the board with the surface is put on the equipment, it is cut to a certain length and the production is completed. However, the hot plate also has blistering reasons. The curing period of the board core is short and the PS on the surface is The surface is too thin, and the glue on the back of the picture reacts with the PS surface. These are three reasons.

1. Cold plate

The first step is to foam the board core: the raw material is PS particles, but since most cold boards are single-layer board cores, double foaming is required. The thickness of the first foaming is generally about 3.5mm. After curing for half a month, the second foaming is carried out. The core is placed on the equipment to foam to about 5.0-5.2mm. After the second foaming, it can be applied directly. Glue fit.

2.KT board

Then stick the dough: the base material of the dough is PVC, usually 0.08m-0.1mm, 0.9×2.4 small plates are mostly 0.08-0.1mm For the dough, 1.2×2.4 large boards generally use 0.16mm dough to strengthen the stiffness of the board. Since the surface is PVC and the core is PS material, the glue you choose must be neutral.

Glue is applied to the surface and core of the board at the same time to adhere to each other. The pasting must be extruded by a flat hydraulic press (more than ten tons). It can be removed, trimmed, packaged and shipped after more than 24 hours.

3. Hot plate

(1) Foam the PS particles into a 2.5mm-3.0mm board core (one-time foaming) through the equipment. At this time, the board core is a coiled material , generally 500 meters. At this time, the board core should be stored at room temperature for half a month (maturation period), so that some waste gas from the board core can be discharged.

(2) Veneing

Put two large rolls of stretched PS dough and two large rolls of mature board core at the same time, and make them through the mold of the equipment. They are fused together to form the entire board. The thickness of the dough is approximately 0.01m.

4. Whole package

Cut the pasted board into a length of 2.4m when it is placed on the equipment. After cutting, trim the edges into a length of 0.9×2.4. Boards are packed and shipped from the factory.

Reference material: Baidu Encyclopedia-KT board