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Considering from two aspects of packaging cost and performance requirements, the thickness selection of each layer of composite flexible packaging materials should be carefully weighed. In general, the heat seal layer can be determined by market generalization and standardization, the strength support layer is generally determined according to the weight of the packaged product, and the thickness ...
The transparency of composite film is very high, but in the composite processing of plastic film, the composite film often has problems such as insufficient transparency. So, what is the reason for affecting the transparency of the composite film? This article analyzes one by one for reference. Improper selection of adhesives: Such as the color of the adhesive itself is dark or the fluid...
The performance requirements of water-based varnish for printing paper glazing are as follows: 1.The film has good environmental resistance. Some of the printed matter after glazing is used to make all kinds of packaging cartons, in order to be able to play a good protective effect on the packaged products, the environmental resistance of the glazing film layer must be better. For example, the pac...
1.There are many formulations of coated glue, and different formulations need to be determined according to the specific use. It generally includes basic glue, thickener, curing agent, auxiliaries and other ingredients. 2.Basic glue is the most important component of laminating glue, it can be selected according to different use requirements of different types, such as water-based, oily, dilu...
Color paste, also known as pigment paste, is an important form of dye application, which is widely used in textile, ink, paint and other industries. In the classification of pastes, low-halogen pastes and ordinary pastes are two common types. They have certain differences in composition, performance and use, and the differences between the two types of pastes will be discussed in detail below. Fir...
The main difference is that the nature is different, the production process is different, and the characteristics are different, as follows: First, the nature is different 1.Flexo printing Flexo printing is a direct printing method known as flexo printing because of the use of elastic, raised image plates. 2.Gravure printing Gravure refers to gravure printing, first the printing plate on the exces...
As an important material for printing, ink is composed of resin, pigment, filler and auxiliary. Due to many industries such as books, packaging, construction, and circuit boards, with the gradual increase in social demand, the use of ink is also increasing. However, in the production and use of ink, due to the addition of surfactants, equipment stirring operation and environmental changes will cau...
Aqueous matte resin matte aliphatic aqueous polyurethane dispersion is a high performance solvent-free anionic aliphatic matte aqueous polyurethane, dull, soft to touch, with excellent hydrolysis resistance, heat resistance and bending resistance. Product performance Appearance Milky liquid Application With excellent flexibility and adhesion, it can be used alone or mixed with other em...
Protective film resin Automobile coating resin High resilience waterborne polyurethane resin 1.Typical properties Appearance: Milky white liquid Protective film resin Automobile coating resin Ph: 7.0-9.0 Automobile coating resin Solid content: 40±1% Charge: Anionic High resilience waterborne polyurethane resin Viscosity (25℃): 300-800cP Elongation (%): >200...
1. Coatings field: Waterborne polyurethane is widely used in waterborne printing inks, wood coatings, metal coatings, automotive coatings, architectural coatings and other fields because of its small curing shrinkage rate, good acid and alkali resistance, wear resistance, weather resistance and chemical stability. 2. Adhesive field: Waterborne polyurethane adhesive has shear vi...
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