Studies on the Thin Rubber Coated Fabrics. (Part 2) Physical Properties of the Coated Fabric with Rubber Compounds Having Different Viscosity

박막(薄膜) Rubber Coated Fabrics에 관(關)한 연구(硏究)(제2보(第2報)) Viscosity가 다른 배합(配合)고무를 각종(各種) 원반(原反)에 도포(塗布)했을때의 물리적(物理的) 성능(性能)에 대(對)하여

Based upon the results of the previous work, the experiments are concentrated on the improvement of the durability of rubber coated fabrics as a rain garment material. To obtain a much lighter and durable coated fabric, several kinds of light weight cotton prints having almost equal density in warp and fillingwise were chosen. Rubber coating on these prints was made by topping and spreading process using rubber compound of various viscosity, and the physical properties of final product were analysed and interpreted in terms of adhesion and durability. The results are as follows. 1. Any noticeable difference between two coating processes was not found in terms of physical properties. 2. Base fabrics should be dipped once into a dilute rubber compound before coating operation in order to obtain a uniform adhesion and physical properties, and the optimum range of the viscosity of dipping paste are from 100 poise to 200 poise. 3. Generally, the tearing strength of the coated fabrics is inversely proportional to the adhesion. 4. It was assumed that the increase of the water proofness after water immersion on the finished material which have dense base fabric is chiefly due to the swelling of the cellulosic fiber.