Smell - ----- should the nose be asked if there is any odor, the normal material has a little alcohol taste, very small, almost no smell, the inferior seal not only applies to the different quality of the waste, but also overdosage of the ingredients and low molecular weight of aromatic oil or complex oil refining oil deep fried oil as a substitute for plasticizer, this product When the factory has just gone out of the factory, it has a large odor. As time goes on, the component volatilized quickly. The sealing strip quickly becomes brittle and brittle. The adhesive strips shrink, loose, and fall off. It is very easy to crack aging and lose the sealing effect.
See - ---- - - - - high quality adhesive strip surface smooth, light sense, no obvious impurities and other defects, uniform color, in summer when the sealant contact with the profile, the poor quality of oil or heavy oil migration of the profile yellowing, the presence of discoloration, yellowing oil, and high quality three ethylene propylene rubber strip is not good. This is the case.
The quality of the adhesive strip is smooth, no saw tooth marks, no crack on the surface, delicate, soft, no distortion, no fluctuation. Poor quality products will feel rough to some extent, even crack.
Pull - --- good adhesive strips are stretched without breaking, and can be restored quickly after bending. High fill soft seal strip strength is poor, ninety percent off split, a pull will be broken.
Called - --- called weight, the same volume of sealant, high quality to clear, and vice versa, high quality three yuan ethylene propylene rubber strip with imported raw rubber, light weight, high anti aging degree. The products produced by reclaimed rubber are relatively large in proportion and poor in aging resistance.
Test - ---- field inspection, insert the glue bar between the profile and glass, check the rationality of the section shape of the rubber strip and the suitability of the size and size, so that the pressure into the rubber strip is not very hard, and the greater the strength of the glass, the better.
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