PVC sealing strip is mainly composed of PVC. In addition, plasticizer and other ingredients are added to enhance its heat resistance, toughness and ductility. PVC sealing strip is easy to form, recyclable and reusable.

Let's analyze the characteristics of poor PVC sealing strip today:

1. The phenomenon of oil leakage appears on the surface, the waste oil is not soluble with PVC at all, the surface of sealing strip is easy to appear grease, and the light colored wood door stop and door leaf surface are also stained with yellow traces, resulting in product pollution, even non-environmental protection, there are many volatile substances, polluting the air.

2. When the so-called plasticizer volatilizes or seeps out, the sealing strip will lose its original softness, become very stiff, and quickly age and shrink, shrink in length and length, shrink in cross-section, so that a large gap will appear in the closed part of the wooden door, and the tightness will become very poor (water leakage, dust leakage), until it loses the function of sealing and sound insulation, increasing the cost of air conditioning and heating, no more Buffering effect, the life of wooden doors will be greatly reduced.