History of the development of cold shrink tube
Cold shrinkage material technology was invented in the United States in the mid-1960s. It was not applied in the field of deep work at first. Until the late 1980s, cold shrinkage technology was applied to cable joints in North America. But limited to the material technology at that time, the shrinkage speed was slow, the permanent deformation was large, and the storage period was short, so it brought a lot of inconvenience in practical application. Since the 1990s, with the development of rubber technology, materials and technology have been unified and many excellent properties of rubber materials have been brought into play.
There are three main threads in the development of cold-shrinkable materials technology.
1. Material technology: After the stage of ordinary rubber - thermo-shrinkable elastomer - ethylene propylene rubber - silicone rubber, the development trend of materials in the future is solid silicone rubber - liquid silicone rubber - liquid silicone rubber - liquid silicone rubber as the main and containing fluorine materials to meet the application requirements of special fields.
2. Expansion technology: experienced steel wire expansion - bag expansion - no steel wire expansion without bag expansion.
3. Supporting material: experienced welding nylon spiral pipe - - Welding polyethylene spiral pipe - - non-welding polypropylene spiral pipe.
In 1994, cold shrinkage products entered the Chinese market, initially affected by the vigorous trend of heat shrinkage materials, and did not receive market recognition. After 2000, with the obvious advantages of cold shrinkage material technology, the market began to grow rapidly and became the most popular new technology products for customers.
At present, the domestic technology of cold-shrinkable materials is in its infancy, facing huge market opportunities, it is of great significance to develop products suitable for domestic use of cold-shrinkable materials to replace imported products.
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