Through the surface treatment of base paper, its functionality and adaptability can be significantly improved to meet the special needs of paper in different application fields. The surface treatment technology of base paper can not only improve the physical properties of paper, but also give it additional functional properties, such as waterproof, oil-resistant, antibacterial, etc. The following are several common surface treatment methods and how they improve the functionality and adaptability of base paper:
Coating is one of the most common surface treatment technologies, which improves the surface quality and functionality of base paper by evenly applying coatings (such as coating adhesives, pigments, fillers, etc.) on the surface of base paper.
Through coating technology, the surface of base paper can obtain better gloss and smoothness, so that it can obtain clearer and more vivid images during the printing process.
The surface of coated paper can better absorb ink and prevent ink diffusion or penetration, thereby improving printing quality, especially in high-quality printing applications such as magazines and advertisements.
Through coating technology, the waterproof and oil-resistant properties of base paper can be enhanced, which is suitable for areas such as food packaging and medical packaging that require waterproof and oil-resistant properties.
Calendaring is a method of surface flattening the base paper using high-pressure roller pressure to improve the gloss and smoothness of the paper.
The surface of the calendered paper is smoother and has a higher density, which is suitable for high-quality printing applications such as book covers and magazine covers.
Through calendering, the surface of the base paper becomes tougher and has enhanced friction resistance, which is particularly important for packaging paper and label paper that need to be frequently touched or moved.
Surface coating is a thin film applied to the surface of the paper, which can change the physical and chemical properties of the paper.
By applying a specific waterproof coating, the base paper can obtain better waterproof performance, which is suitable for packaging materials that need to be moisture-proof and moisture-proof (such as beverage packaging, pharmaceutical packaging, etc.).
Some specific antibacterial coatings can effectively inhibit the growth of bacteria and fungi, and are often used in the production of products such as toilet paper and medical tissues.
For some special food packaging materials, the surface coating can provide gas and vapor barrier properties to extend the shelf life of food.
Anti-ultraviolet treatment is to enhance the resistance of the base paper to ultraviolet rays through coating or other chemical means, and extend its service life under sunlight.
Ultraviolet rays can cause paper to age and fade. Through anti-UV coating treatment, the base paper can effectively resist ultraviolet rays and extend its service life, which is particularly suitable for products such as outdoor advertising, labels and decorative materials that are exposed to sunlight for a long time.
For printed materials, UV-resistant surface treatment can prevent colors from fading due to UV rays, keeping images and text clear and bright.
Spectral coating technology is to apply a special coating on the surface of paper to enable it to reflect or absorb light of specific wavelengths and enhance the characteristics of the paper.
By applying spectral coating, the reflectivity of the base paper can be improved, improving the visual effect of the paper, especially for some high-end printed products.
For example, the base paper of some high-end product packaging may be coated with a reflective coating to create a more visually eye-catching effect.
Static electricity accumulation may cause adsorption, accumulation or printing problems of paper in some applications. Antistatic treatment reduces static electricity accumulation on the base paper by using antistatic agents or coatings.
Antistatic coating can effectively prevent dust and impurities from accumulating on the surface of paper, improve production efficiency, and is suitable for high-precision printing or high-demand packaging applications.
Antistatic treatment can also improve operations during paper production, packaging and transportation, and reduce paper adhesion or jamming problems caused by static electricity.
Fireproof treatment of base paper gives it good fireproof properties by applying fireproof coating or using high-temperature resistant materials.
Fireproof base paper is suitable for applications with high safety requirements, such as packaging for electrical products, building materials, and other areas that require fire resistance.
In some regions, base paper must meet fire protection standards in certain applications. Fireproof treatment can ensure the legality and safety of base paper in these applications.
With the improvement of environmental awareness, the biodegradability of base paper has become an important research direction. By using biodegradable coatings or additives, base paper can be decomposed faster after use, reducing the burden on the environment.
Biodegradable base paper is widely used in the packaging industry, especially in food packaging and disposable products, which can reduce the use of plastics and other non-degradable materials.
Some biodegradable base paper products have obtained environmental certification, which is in line with the trend of sustainable development.
The surface treatment of base paper is a key means to improve its functionality and adaptability. Through different treatment methods, such as coating, calendering, anti-ultraviolet treatment, etc., the surface properties of base paper can be significantly improved to meet the needs of different application fields. With the development of technology, the functionality of base paper is also constantly enhanced, not only meeting daily use, but also coping with more complex and diverse application requirements, thus playing an increasingly important role in packaging, printing, medical, environmental protection and other industries.