How to choose waterproof membrane? How to buy waterproof membrane

August 17, 2022

First, pay attention to the product name and packaging logo

According to product standard regulations, the product packaging should be marked with the company name, product label, production date or batch number, production license number, storage and transportation precautions. The product labeling should be strictly according to the standard, consistent with the product name, and must not be vague. Incomplete or incomplete mark and no production mark. When users select these products, they must pay attention to the product mark and recognize the product name because the mark represents the identity of the product. Example: Polyester-cotton non-woven fabric - mesh fabric composite tire production can only be named as bituminous composite tire flexible waterproof membrane or composite tire membrane, and can not be named SBS membrane, its product mark is also Can only be marked on the compound tire standard.

Second, from the base to identify the quality of the coil

General visual inspection from the product's section, the specific method can be used to tear the product to be hand, observed on the exposed surface of the fetal fiber, after the composite tire tearing on the cross-section grid ribs exposed, It can be concluded that the product must be a composite tire membrane, what kind of composite tire membrane material need to rely on the physical test - soluble content test to observe the exposed tire base. However, only the polyester or glass fiber fibers are exposed after the pure polyester tire and glass fiber tire are torn.

Third, strict quality control from physical properties

From the visual inspection of the appearance, only composite tire membranes can be distinguished, but it fails to solve whether the selected products meet the quality requirements. This requires the user to go to the technical organization with the inspection ability and carry out the soluble content according to the corresponding product standards. The physical properties of the factory items are tested by using soluble content items to control the amount of bitumen and modifiers contained in the products, as well as to reveal the true appearance of the tire base used in the product, and to determine whether it is consistent with the product marking.

Fourth, product price comparison

Waterproof membrane products are highly competitive and counterfeit goods are rampant. Taking the SBS modified bitumen membrane with the largest amount of production in the market as an example, the company’s profit is also better than 15%. There are many ultra-low-cost SBS modified bitumen membranes on the market with little SBS content, and even without SBS, they are replaced with waste rubber powder. Therefore, when buying, pay attention to avoid selecting products that are significantly lower than the market price.

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