Cold shrinkable VS Heat shrinkable

Today I would like to introduce the difference between heat shrinkable and cold shrinkable.

1. The working principle

①When the heat shrinkable is just extruded, the inner diameter should be smaller than that of the finished product, and then the inner diameter should be expanded into the finished product, and the heat will restore it to the small caliber state when it is extruded. This is the working principle of the heat shrinkable.

②The principle of the cold shrink tube is relatively simple. Like a rubber band, a pull ring is used to support the aperture to make it larger. The inner diameter decreases when the support is removed during use.

2. Usage method

①The heat shrink tube needs to be heated in the process of use, and special heating tools, such as industrial heat gun and industrial oven, are required for the proficiency of the operator.

②The cold shrink tube does not need to be frozen in the process of use, nor does it need to use a third party tool. It is very simple to use. It only needs to pull off the support ring to remove the support force, and it can automatically shrink.

3. Main usage

①The material of the heat shrink tube is divided into PVC, PE, PVDF, Teflon, fluorine rubber, silicone rubber and other main materials. The heat shrink tube of different materials can be selected according to its use. The inner diameter of the specification is also more, ranging from the smallest heat shrink tube specification 0.5mm to 200mm. The use of the field is also very wide, more methods, electronic appliances, aerospace, automotive and other fields will be inseparable from the use of heat shrink tube.

②The material of the cold shrinkable tube is relatively simple, generally based on EPDM, and the minimum specification is also starting with an inner diameter of 20mm, so the applicability will be poor. It is generally used in places where heat sources cannot appear, and where it is not convenient to use third-party tools, and is usually used in communication and other fields.

4. The above is the difference between heat shrink tube and cold shrink tube, which specific good, from the use of environment, specific problem specific analysis.

①From the convenience of use, cold shrink tube is better than heat shrink tube, do not need to heat, just need to pull off the support ring.

②Cold shrink tube waterproof performance is very excellent, because the material itself has hydrophobicity, waterproof level can reach IP67, and negotiate with the user experimental requirements can reach IP68. And the heat shrink tube only with adhesive heat shrink tube can reach IP67 level.

③From the market audience, the heat shrinkable tube is better than the cold shrinkable tube, because the heat shrinkable tube model specifications are more, the choice is better.

④In terms of price, the heat shrinkable tube must be an absolute advantage. The heat shrinkable tube technology is more mature, the production difficulty is lower, the raw material cost is lower, so the price is cheaper.