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载重车采用蓬布结构,可以减轻重量,增加载重量,节省金属,便于装卸。但是目前采用的蓬布,系用亚麻或棉织物浸胶制成,强度低,受光热作用后易陈旧和变质,制造费工,寿命最多不超过一年半。用合成材料,一面或两面涂一层聚合物制造的蓬布,其强度高、耐火、耐油、防水、耐光和热,制造省工。可以采用高频熔接方法,使用寿命比用天然纤维织物做的蓬布长2～4倍。苏联卡玛河汽车的蓬布用名为的材料制成。这是一种聚酯织物,两面复以增塑聚氯乙烯基聚合物,根据用户需要可以改变颜色、压纹、修饰,使材料具有其它特性(防火、耐油、韧性好等),并可用热法制造,其中包括高频熔接法。
Trucks using tarpaulin structure, can reduce weight, increase load carrying capacity, save metal, easy loading and unloading. However, the current use of tarpaulins, made of linen or cotton fabric dipped, low strength, light and heat after the easy-to-old and metamorphism, manufacturing labor, the maximum life expectancy of not more than a year and a half. With synthetic material, one or both sides coated with a layer of polymer made of tarpaulin, its high strength, fire resistance, oil resistance, waterproof, light and heat, creating labor-saving. Can use high-frequency welding method, the service life than the fabric made of natural fiber cloth made of 2 to 4 times longer. The tarpaulins of the Soviet Union Kama River are made of a material named. This is a polyester fabric, both sides of plasticized PVC-based polymer, according to user needs can change the color, embossing, modification, so that the material has other characteristics (fire, oil, good toughness, etc.) Law, including high-frequency welding method.