Traditional inferior PVC seal strip product symptoms:
1. Surface seeping oil precipitation phenomenon, those waste oil and PVC do not dissolve at all, sealing strip surface is easy to appear grease, in light wood door door and door door surface is also stained with yellow traces, resulting in product pollution, even not environmentally friendly there are a lot of volatile substances, pollution of the air.
2. When those so-called plasticizer volatilization or leakage sealing strip will lose its original softness, become very stiff, and ageing rapidly contracting, length contraction, broken section contraction, this part of the wooden door closed a large gap, got worse in sealing (water leakage, leakage of dust), until the loss of seal sound insulation effect, increase the cost of the air conditioning and heating, without a cushion, will greatly reduce the life of a wooden door.
3. Put the PVC seal strip under high temperature for a period of time (put it on the roof or in a sunny place), the PVC seal strip will become very soft for a short time, and the grease on the surface of the seal strip will precipitate out, stained with dust, and turn yellow (oil is easy to absorb the earth) to seep oil and dirty hands.
4. Some of the cheaper sealing strip filler will be a lot of, so the surface will not be very bright, dull color, cut off the sealing strip section will be very rough, feel stiff, pull almost no elastic.