Custom Self Adhesive Regular Paper Materials Manufacturers

In the coating process of regular paper material self-adhesive paper products, how to control the coating speed, temperature, pressure and other parameters to ensure the uniformity and quality of coating?

1. Control of coating speed
Coating speed is one of the important factors affecting coating quality. Too fast coating speed may cause uneven distribution of coating liquid on the paper surface, forming stripes or spots; while too slow coating speed may cause excessive penetration of coating liquid into the regular paper materials, affecting the bonding performance of the product.
Speed ​​selection: The selection of coating speed should be determined according to the viscosity of the coating liquid, the absorbency of the paper and the performance of the coating equipment. Generally speaking, a coating liquid with higher viscosity requires a slower coating speed to ensure that the coating liquid can be evenly distributed on the paper surface. The absorbency of the paper will also affect the selection of coating speed. Regular paper materials with strong absorbency requires a faster coating speed to avoid excessive penetration of the coating liquid.
Speed ​​adjustment: During the coating process, the coating speed should be adjusted in time according to the actual situation. The coating speed can be evaluated by observing the appearance of the product after coating and testing the bonding performance. If uneven coating or poor adhesion is found, the coating speed should be adjusted in time.
Equipment stability: The stability of the coating equipment is crucial to the control of the coating speed. Shanghai Baozhongbao Adhesive Products Co., Ltd introduces advanced coating equipment and regularly performs maintenance and upkeep to ensure the stable operation of the equipment and the precise control of the coating speed.
2. Control of coating temperature
Coating temperature is an important factor affecting the viscosity and fluidity of the coating liquid. Appropriate coating temperature can keep the coating liquid in good fluidity and viscosity, thereby ensuring the uniformity and quality of the coating.
Temperature selection: The selection of coating temperature should be determined according to the properties of the coating liquid and the characteristics of the regular paper materials. Generally speaking, the viscosity of the coating liquid decreases with increasing temperature, and the fluidity increases. Therefore, a suitable temperature should be selected during the coating process to keep the coating liquid in good fluidity and viscosity.
Temperature adjustment: The coating equipment is usually equipped with a temperature control system, which can set and adjust the coating temperature according to actual needs. During the coating process, the temperature changes of the coating liquid should be closely monitored, and the temperature control system should be adjusted in time according to the actual situation to ensure the constant and appropriate coating temperature.
Temperature uniformity: In addition to controlling the coating temperature, the uniformity of temperature during the coating process should also be ensured. Uneven temperature may cause uneven distribution of the coating liquid on the regular paper surface, affecting the coating quality. Therefore, the uniformity of temperature should be fully considered in the design and layout of the coating equipment.
3. Control of coating pressure
Coating pressure is an important factor affecting the contact degree and bonding quality between the coating liquid and the paper. Appropriate coating pressure can make the coating liquid fully penetrate into the surface of the paper, form a uniform coating layer, and improve the bonding performance of the product.
Choice of pressure: The choice of coating pressure should be determined according to the thickness, hardness and viscosity of the regular paper. Generally speaking, thicker paper requires greater coating pressure to ensure that the coating liquid can fully penetrate into the surface of the paper. Coating liquids with higher viscosity also require greater coating pressure to improve the fluidity of the coating liquid.
Pressure regulation: Coating equipment is usually equipped with a pressure control system, which can set and adjust the coating pressure according to actual needs. During the coating process, the changes in coating pressure should be closely monitored, and the pressure control system should be adjusted in time according to the actual situation to ensure the constant and appropriate coating pressure.
Uniformity of pressure: Similar to temperature control, uniformity of coating pressure is also one of the key factors to ensure coating quality. Uneven pressure may cause uneven distribution of coating liquid on the regular paper surface, forming stripes or spots. Therefore, the uniformity of pressure should be fully considered in the design and layout of coating equipment.
4. Other considerations
In addition to the control of coating speed, temperature and pressure, there are some other factors that will affect the uniformity and quality of coating.
Preparation of coating liquid: The quality and stability of coating liquid have a vital influence on the coating quality. Therefore, before coating, the coating liquid should be fully stirred and evenly mixed to avoid precipitation or stratification.
Paper processing: The surface condition and absorbency of paper will also affect the coating quality. Before coating, the paper should be processed as necessary, such as dust removal, degreasing, etc., to ensure the cleanliness and flatness of the paper surface.
Environmental control: Environmental factors such as humidity and temperature during the coating process will also have a certain impact on the coating quality. Therefore, during the coating process, we should pay close attention to the changes in environmental factors and take corresponding measures to control and adjust them.
Shanghai Baozhongbao Adhesive Products Co., Ltd always pays attention to the control and optimization of parameters such as coating speed, temperature, and pressure in the coating process of ordinary paper material self-adhesive paper products. The company continuously improves the uniformity and quality of coating by introducing advanced coating equipment and technology to meet customers' demand for high-quality self-adhesive paper products. The company also actively develops new bio-based adhesives and environmentally friendly materials, and is committed to promoting the green development and sustainable development of the adhesive products industry.
The company's conventional self-adhesive paper products include semi-gloss paper, cast-coated paper, semi-woodless paper, and kraft paper. These products can meet the needs of different customers according to different substrates and adhesive combinations. For example, in the fields of cosmetic labels, logistics, advertising, medical care, food, and other industries, the company's ordinary paper products have been widely used. In addition, the company's products are also suitable for all types of printing processes, providing customers with more diverse choices.
In terms of adhesive solutions, Shanghai Baozhongbao Adhesive Products Co., Ltd also provides a variety of options, such as acrylic acid, acrylic adhesive, hot melt adhesive, etc. These adhesives have different performance and characteristics to meet the needs of customers in different application scenarios. For example, in scenarios where strong bonding performance is required, acrylic acid or acrylic adhesive can be selected; while in scenarios where fast curing is required, hot melt adhesive can be selected.