How to identify the quality of Drywall Tape?

Fiber Glass is a reinforcing material for the exterior wall insulation surface layer. Its main function is to improve the mechanical strength of the surface layer, ensure the resistance continuity of the facing layer, disperse the shrinkage pressure and insulation stress of the surface layer, avoid stress concentration, and resist natural temperature, surface cracking caused by humidity changes and accidental impact. Drywall Tape plays an important role in the external insulation system, so the selection of good Fiber Glass by fiberglass Drywall Tape manufacturers is also an important part of ensuring the overall quality of the external insulation system.

1. The Glass Fiber of poor Drywall Tape is usually made of waste glass from beer bottles. The production process is clay crucible drawing, which is a prohibited production process, and the surface coating is not alkali-resistant emulsion. From an intuitive point of view: the workmanship is relatively rough, and generally sold in large quantities in the market. The length is often insufficient, the weight is insufficient, and it breaks after folding twice. The joints are not strong and easy to shift, and it is easy to puncture the skin. This type of Drywall Tape generally loses its strength after two months when used in the insulation layer. If the mortar is knocked out and the Fiber Glass is taken out, the fiberglass yarn will turn into powder with just a slight grinding.
2. There is another kind called imitation platinum Drywall Tape, also called mixed silk yarn. This is a relatively good imitation of glass fiber, but it is usually made from flat broken glass with good transparency, and the fiber diameter is relatively thin. Sometimes it is difficult to judge its authenticity from the surface, but its quality cannot meet the requirements of alkali-resistant Drywall Tape for exterior wall insulation.
3. Standard high-quality fiberglass Drywall Tape uses platinum fiberglass as the base material. Both the selection of materials and the weaving process are very particular. The coating emulsions used have good alkali resistance. The excellent alkali resistance and high longitudinal and latitudinal tensile strength make the product have good hand feel and good construction conformity. Glass fiber Drywall Tape manufacturers can greatly reduce the amount of plastering mortar.