The production process of PVC wallpaper (II)

- Mar 07, 2018 -

Paste viscosity. C: the raw materials used must be inspected, qualified or approved by the relevant supervisor. D: all raw materials should be stored in a fixed position, and the corresponding labeling should be done. The viscosity of the paste should be measured in the 8mm diameter measuring cup in production, and the time should be controlled at about 8-25s.

3. dry

Drying is to use the gas heater, through the hot air circulation system, to the original paper surface coating drying (gel). The drying stove is divided into three zones, each setting temperature from bottom to high.

A: foaming wallpaper area: 190-10, zone 2:210-10, zone 3:230-10.

B: no bubble wallpaper area: 150-10, zone 2:170-10, zone 3:1900-10.

4. cooling

In between drying and printing, cooling water is cooled by circulating chilled water through two cooling wheels.

5. printing

Printing, that is to use the printing wheel and circulation ink, different designs use different printing wheel, on the surface of the fabric printed on the wallpaper pattern. Scraping ink adopts special printing scraper, the blade width is 60mm, and the thickness is 0.15mm. In the production process.

Viscosity, and the ink viscosity is controlled in 25-40s, the pearl-light l should be relaxed to within 60 seconds. In normal production, zhang lizhao.

6. Dry between version

The drying between plates is between each printing, using a single I cycle to dry the pattern after each printing to prevent the preface.

7. softening

Softening is the method of using electric heating to heat mold before the pressure is pressed, and the heating cover is combined with ceramic and quartz tube.

8. embossing

Embossing is the compression of the fruit with embossing wheel after softening the fabric. Embossing is divided into two types: flowers and flowers. The surface temperature shall be controlled by the temperature of j in combination with the instantaneous contact between the product fabric and the embossing wheel. After the temperature value is determined, it should be within 10% of the whole batch of products. Under normal circumstances, the pressure before embossing is 28-35kgf, and the tension after embossing is 28-35kgf. When the embossing is not correct, the pressure before embossing is 28-35kgf, and the tension after embossing is 17-20kgf.

9. cooling

The fabric is cooled and hardened by cooling water through the air cooling system and two cooling wheels.

10. The cutting of ear

The cutting ear is the width or other special specification that is cut to about 530mm by cutting the ear knife. In principle, the ear width is 530 plus or minus Smm. In the case of special conditions such as the cutting edge, the maximum width adjustment can be achieved according to the requirement. The sum of the cutter eccentricity should be less than 60um.

1 1. Product material

Product material is use longer platform on wallpaper ACTS as a slow walk speed, convenient for staff to wallpaper surface defect inspection, found that defects shall be immediately marked, the part when coiling strip.

12. coiling

Winding is to use the coiler to roll the product into a single product according to the required size. In principle, the size of each volume of wallpapers is lOm, and in the case of special requirements, it is taken according to the size of the customer's requirements.


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