There are also large differences in the price of double-walled heat shrinkable tubes on the market, the reason for which is the quality of the materials used, the general price of low-priced heat shrinkable pipe raw materials may only be "polyethylene + plastic + product color." And a good recipe is also the core technology of a factory, but also the key to the competitiveness of a factory.

So the heat shrinkable tube also has the expensive truth, the key is still the material good or bad, and the better formula can reduce the cost, naturally reduces the heat shrinkage sleeve sale price, increases the competitiveness.

The types of heat shrinkable tubes are divided into many, different specifications, different thicknesses, different materials, the use is not the same. PVC Heat shrinkable Pipe and has the special function of heat shrinkage, heating more than 98 ℃ can shrink, easy to use. Products according to temperature-resistant divided into 85 ℃ and 105 ℃ two series, specifications φ2-φ double-walled heat shrinkable tube 200, products in line with the EU RoHS environmental protection directive. Used in electrolytic capacitors, inductors, products with good high temperature performance, no secondary shrinkage, can be printed on behalf of. Used for a variety of rechargeable batteries monomer, combination packaging, and on behalf of the design, printing drawings, and can be cut on behalf of customers. Used for all kinds of curtain rod, bath curtain rod, hanging rod, mop rod, broom handle, tool rod, telescopic rod, garden tools, pole and other tubular items of the outsourcing. And can be used for low-voltage indoor bus copper row, joints, wire harness identification, insulation outsourcing. High efficiency, low equipment investment, small comprehensive cost. For lighting, LED pin cladding, and guitar, packaging bottle mouth package, is a new generation of packaging materials. Whether it is civilian, car or military, are the choice.

Pet heat shrinkable tubes can be degraded and used in products with environmental level requirements. Pet Heat shrinkable Tube (polyester heat shrinkable tube) from the heat resistance, electrical insulation properties, mechanical properties are greatly more than PVC heat shrinkable casing, more importantly, pet thermal shrinkage casing has no toxicity, easy to recover, the human body and the environment will not have toxic effects, more in line with environmental requirements.

Pet heat shrinkable Tube environmental performance is higher than the EU RoHS Directive standard, can meet the SonySS-00259 environmental standards. Non-cadmium (Cd), high temperature heat shrinkable tube lead (PB), Mercury (HG), hexavalent chromium (Crvi), polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (pbbes/pbdes), polychlorinated biphenyls (PCBs), PCTs (PCT), polychlorinated naphthalenes (PCN) and Other level 1 environmental management banned substances, Electrolytic capacitors, inductors and other electronic components, high-grade rechargeable batteries, toys and medical equipment outsourcing, can fully meet the export requirements. Pet Thermal shrinkage Casing battery Packaging style battery packaging,

The outer layer of the rubber-containing double-walled heat shrinkable casing adopts high quality polyolefin alloy, which is processed by the internal hot melt adhesive. After the product molding by the electronic accelerator irradiation crosslinking, continuous expansion of the formation. The outer layer has the advantages of soft, low temperature shrinkage, insulation, anticorrosion, wear resistance and so on, the inner layer has the advantages of low melting point, good adhesion, waterproof seal and mechanical strain cushioning performance. Widely used in electronic equipment wiring waterproof, anti-leakage, multi-strand wire harness sealing waterproof (such as home appliance wiring harness, automotive wiring harness, etc.), wire and cable branches of the seal waterproof, metal pipeline corrosion protection, wire and cable repair, water pump and submersible pump wiring waterproof and other occasions.

PE heat shrinkable Tube according to the voltage level is divided into several kinds, used in the motor lead line, inductance, high pressure on the wire insulation, mother row package and so on.

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双壁热缩管用途分析

市面上的双壁热缩管价格也存在着比较大的差异，究其原因还用的材料的好坏，一般价格低廉的热缩管的原料可能只是“聚乙烯+塑料+产品颜色”。而一个好的配方也是一个厂的核心技术，也是一个厂的竞争力的关键。

所以热缩管也有贵的道理，关键还是材料的好坏，而更好的配方能降低成本，自然就降低热收缩套的售卖价格，增大竞争力。

热缩管的种类分为很多，不同规格，不同厚度，不同材质，用途就不一样。PVC的热缩管和具有遇热收缩的特殊功能，加热98℃以上即可收缩，使用方便。产品按耐温分为85℃和105℃两大系列，规格Φ2-Φ双壁热缩管200，产品符合欧盟RoHS环保指令。用于电解电容器、电感，产品耐高温性能好、无二次收缩，可代为印刷。用于各种充电电池的单体、组合包装，并代为设计、印刷图样，并可代客裁切。用于各种窗帘杆、浴帘杆、挂杆、拖把杆、扫帚柄、工具杆、伸缩杆、园林工具、撑杆等管状物品的外包覆。并可用于低压室内母线铜排、接头、线束的标识、绝缘外包覆。效率高、设备投资少、综合成本小。用于灯饰、LED引脚的包覆，及吉它、包装瓶口的包裹，是新一代的包装材料。无论是民用、车用还是军用，都是上选。

PET的热缩管可以降解，用在有环保等级要求的产品上。PET的热缩管（聚酯热缩管）从耐热性、电绝缘性能、机械性能上都大大超过pvc热缩套管，更重要的是PET热收缩套管具有无毒性，易于回收，对人体和环境不会产生毒害影响，更符合环保要求。

PET热缩管的环保性能高于欧盟RoHs指令标准，可达到SonySS-00259环保标准。不含镉（Cd）、高温热缩管铅（Pb）、汞（Hg）、六价铬（CrVI）、多溴联苯（PBBs）、多溴联苯醚（PBBEs/PBDEs），多氯联苯（PCB)，多氯三联苯（PCT），多氯化萘（PCN）等1级环境管理禁用物质，是电解电容器、电感等电子元器件、高档充电电池，玩具及医疗器械的外包覆，完全能满足出口要求。PET热收缩套管电池包装样式电池包装,

含胶双壁热缩套管外层采用优质的聚烯烃合金，内层热熔胶复合加工而成。产品成型后经电子加速器辐照交联、连续扩张而成。外层具有柔软、低温收缩、绝缘、防腐、耐磨等优点，内层具有低熔点、粘附力好、防水密封和机械应变缓冲性能等优点。广泛应用于电子设备的接线防水、防漏气，多股线束的密封防水（如家电线束、汽车线束等），电线电缆分支处的密封防水，金属管线的防腐保护，电线电缆的修补，水泵和潜水泵的接线防水等场合。

PE的热缩管按电压等级分好几种，用在电机引出线，电感上，高压的就用在导线绝缘，母排包裹等等。