Ordinary Water-based Varnish

Ordinary water-based varnish refers to the water as a carrier of the coating and the surface of paper prints, by infrared lamp drying and curing is used to increase the gloss, water resistance, abrasion resistance of the prints of a milky white liquid, can be VOC emissions, environmental protection.

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Product Introduction

Application fields

Printing industry: used for surface polishing of printed materials such as books, magazines, and picture albums to increase the gloss and wear resistance of printed materials and improve the grade of products.

Packaging industry: used for surface treatment of packaging materials such as paper boxes, paper bags, and cartons to enhance the beauty and protection of packaging.

Plastic industry: can be used for surface decoration and protection of plastic products such as plastic films and plastic bottles.

Other fields: can also be used for protection and decoration of surfaces such as furniture, floors, and metal products.

Construction method

Coating method: Common coating methods include spraying, roller coating, and curtain coating. Spraying is suitable for objects with complex shapes or small batch production; roller coating is suitable for large areas and continuous production; curtain coating is suitable for high-speed coating.

Drying conditions: The drying of ordinary water-based varnish usually requires certain temperature and humidity conditions. Natural drying, hot air drying, or infrared drying can be used. Choose the appropriate drying method according to the actual situation.

Precautions

Storage conditions: Water-based varnish should be stored in a cool, dry, well-ventilated place, away from direct sunlight and high temperature environment. The storage temperature is generally between 5℃ and 35℃.

Shelf life: Under the specified storage conditions, water-based varnish has a certain shelf life. Varnish that exceeds the shelf life may have problems such as performance degradation and deterioration, and should not be used.

Construction environment: The temperature and humidity of the construction environment have a certain impact on the performance of water-based varnish. Generally speaking, the construction temperature is between 15℃ and 30℃, and the relative humidity is between 40% and 70%.

Substrate treatment: Before applying water based varnish, the substrate needs to be properly treated to ensure that the substrate surface is clean, dry and flat to improve the adhesion and performance of the varnish.

FAQ

Q: What is the main difference between water-based varnish and oil-based varnish?

A: Oil-based varnish uses organic solvent as the main solvent, has a pungent odor and high organic volatiles, and is environmentally friendly; water-based varnish uses water as the main solvent and is environmentally friendly. Oil-based varnish may dry faster, but it is flammable and explosive; water-based varnish dries relatively slowly, but is safer.

Q: What is the drying method of ordinary water-based varnish?

A: It mainly adopts a combination of volatile drying and penetration drying. During the drying process, water evaporates and the film-forming material forms a film layer.

Q: How to control the coating amount of water based varnish?

A: The coating amount is related to factors such as the adsorption of the substrate to the varnish, the viscosity of the varnish, and the purpose of varnishing. Generally, the coating amount can be controlled by adjusting the parameters of the coating equipment or appropriately diluting the varnish according to actual needs.

Q: How to adjust the viscosity of ordinary water-based varnish?

A: The viscosity can be reduced by adding water or a specific diluent, but care must be taken to dilute within a reasonable solid content range to avoid affecting the performance of the varnish.

Q: What should be noted when storing ordinary water based varnish?

A: It should be stored in a cool, dry, well-ventilated place, away from direct sunlight and high temperature environment. The storage temperature is generally between 5℃ and 35℃, and the temperature should be too low to freeze, which may affect the performance.

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