| 摘要 |
<p>PURPOSE:To manufacture the breathable composite material in one process quickly and in mass production by inserting the heated needle into the laminating material consisting of plastic film and non-woven cloth, and perforating and welding simultaneously. CONSTITUTION:The composite Sa is formed up by putting together plastic film 1 made of polypropylene and plastic non-woven cloth 2, and passed through between the revolution rollers A and B, with the face of non-woven cloth 2 being contacted to the roller B. At that time, the tip of heated needle K heated up over the dissolution temperature (250 deg.C) of polypropylene film 1 is inserted into the composite Sa from the film side and pierced the non-woven cloth 2. By the said process, the film section and the non-woven cloth section around the film are dissolved, and welded each other to join up the composite Sa, and also the heated needle K is drawn out of the revolving roller A, leaving the micro pore 3. Thus, the breathable composite material S having numerous welding portions and strong joining power is produced.</p> |
