Hot Melt Fiber Sticky Legal Hot Air Thermal Properties Of The Non-woven Thermal Material

In the cold weather, the basic requirement for clothes is to keep warm.. The traditional method of thermal insultion usually leads to the thickness and weighty of clothes, which makes the user inconvenient and causes uncomfortable psychologically and mentally. For soldiers in the high land, weighty uniform will exhaust them easily and influence their fighting technology. As a result it is very important to make the winter uniform light as long as they are warm enough. The general trend of thermal insulation materials is light, comfortable and warm.The history and development of thermal insulation materials is discussed, and the development and prospect in the future are predicated. Through air thermal bonded nonwovens are manufactured to reduced the weight, and by analyzing the heat transfer mechanism, the method of designing through air thermal bonded nonwovens is outlined.Through air bonding method has many advantages such low energy consumption, no pollution etc. In this paper the ordinary PET and heat binding fiber are opened, and combed into fiber assembles. Then the fiber assembles are bonded into nonwovens. Heat binding fiber used here are bicomponent fibers and low melt point PET fibers. Properties of final products are measured and the results are analyzed with regression method. The result shows properties of products manufactured with bicomponent fibers exceed that of low melt point PET fibers. As the elastic modulus of PET is comparatively high, the bulkiness and the warmth retention property will go up with the increase of PET fiber content. It is founded that the warmth retention property reaches the best when the wg% of ordinary PET is 75%. The strength and washing ability will go up with the heat binding fiber content, when the wg% of heat binding fiber is 40%, the best results will be reached. So the technology parameters of manufactured through air nonwovens should made according to the requirement of products.Other people's studies of heat transfer mechanism are discussed and some proposals are put forward. And the correctness and application of the new model is validated by comparing the theoreticail values and experimental values.