Low temperature hot melt rubber harbor treasure:
Low temperature hot melt film is commonly known as low temperature hot melt adhesive Gangbao and low temperature Gangbao. It is the most advanced front lining and back sleeve material, with high elasticity of rubber and plasticity of thermoplastic material. Its viscosity remains unchanged after being used for many times. After being heated and softened, its product does not stick to hands.
The characteristics of low operating temperature, suitable opening time and high bond strength. The finished shoes are beautiful in shape, not easy to deform after forming, excellent in resilience, good in weather resistance and wear resistance, and green and environmental friendly in material. There is no crease and water caltrop when setting, reducing the defect rate of the product has good adhesion to all kinds of materials, and no need to apply adhesive. Energy saving and excellent operation.

Development trend and Prospect of hot melt adhesive Harbor:
China is the largest footwear manufacturing base in the world. In the future, the development of China's footwear industry will inevitably move from the low-end market to the middle and high-end market, and the upgrading of the industry is the inevitable way. So on the one hand, the demand for shoes will continue to increase, but on the other hand, the demand for shoes with environmental protection, energy saving and higher added value will be greater. As one of the most important materials for shoemaking, the demand for hot-melt film is huge.
Traditional kraft pulp harbor and chemical tablet harbor adopt the methods of immersion softening and bubble solvent (toluene) softening, but the products are thick, the forming time is long, and the elasticity is very poor; in addition, the operation procedures are many, time-consuming and laborious, which is not in line with the economic benefits. Moreover, it is harmful to the body, irritating to the skin and mucous membrane, and has anesthetic effect on the central nervous system.
So the traditional harbor treasure belongs to the backward and obsolete products which are neither environmental protection nor economic. The low-temperature hot-melt film which has been put on the market in the past two years is the best substitute for the traditional Gangbao.

热熔胶港口的发展趋势与前景：
中国是世界上最大的鞋类制造基地。未来，我国鞋业的发展必然会从低端市场向中高端市场转移，产业升级是必然的途径。因此，一方面对鞋的需求会继续增加，但另一方面，对环保、节能、附加值较高的鞋的需求会更大。热熔膜作为制鞋的重要材料之一，其需求量巨大。
传统的硫酸盐浆港和化学药片港采用浸没软化和泡溶剂（甲苯）软化的方法，但产品较厚，成型时间长，弹性差，而且操作程序多，费时费力，这不符合经济效益。对人体有害，对皮肤和粘膜有刺激性，对中枢神经系统有麻醉作用。
因此，传统的港口宝藏属于既不环保又不经济的落后、陈旧产品。近两年投放市场的低温热熔膜是传统钢包的最佳替代品。