How to distinguish the types of double-sided tape?

by:CROWN     2021-09-25

Double-sided tape can be used in all major industries. The effect may be unsatisfactory when used on different occasions. So why is there such a big gap between double-sided tapes?

There are many double-sided tapes. The main reason is that the glue used is very different. Ordinary glue moisture-proofing agent is double-sided adhesive oil glue and water glue, hot-melt pressure-sensitive adhesive, then how to distinguish double-sided adhesive oil glue and water glue, hot-melt pressure-sensitive adhesive? Now briefly introduce their characteristics:

Double-sided tape is made by emulsifying acrylic or polyurethane resin in special emulsification equipment with water as solvent. Its advantages are variety, environmental protection, and low price. Nowadays, many coatings are made of water-soluble glue, such as ordinary water-soluble PA, water-soluble PU and film glue, oily waxy feel, scratch color paste, and other functional pastes. Functional, environmentally friendly, and inexpensive water-soluble will become the development direction of future coatings. The disadvantages are poor film-forming properties and poor washing fastness. PU cannot be pasted with hot air glue, nor is it suitable for foaming products such as sponges and foams.

Double-sided adhesive oil glue is an oily solvent (toluene, DMF, butyl), etc. that is used as a solvent by dissolving acrylic or polyurethane. Its advantages are good film formation, good fastness, and hot air glue can be used to paste PU, which is currently commonly used paint glue. The disadvantage is that due to the use of oily solvents, there is a lack of environmental protection, especially in the case of rising oil prices, causing the price of oily solvents to rise sharply. Most paint glues are too expensive, so relatively poor oily solvents are used, which leads to environmental protection failures. With the further improvement of environmental protection standards in various countries, the environmental protection requirements for paint adhesives are becoming higher and higher. And higher.

Double-sided adhesive hot melt pressure-sensitive adhesive is a pressure-sensitive adhesive, mainly composed of synthetic rubber, resin, and rubber oil, etc., mixed and heated to a molten state and then coated on tissue paper, cloth, or plastic film. A new type of adhesive tape made of this material has the advantage of low cost, but the disadvantage is that the viscosity will be significantly affected by temperature. Mainly used for various sealing, box sealing, paper packaging, beverage bottle label, aluminum foil sealing, flexible packaging, and another packaging; environmentally friendly paper pallets, etc., suitable for various materials.

Therefore, when we buy double-sided tape, we must not only look at the cheap price but also understand our use environment and choose the type of double-sided tape suitable for our business.

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