Shenyang Tiantianyuan Packing Co., Ltd. mainly produces: Tianyuan tape, BOPP mother roll, semi-finished tape, sealing tape, masking tape, printing tape, cloth base, warning tape, etc. Heat sealing tape is made of special equipment (hot air seam) Sealing machine or high-frequency heat sealing machine) heating, sewing in the raincoat, tent, rising air ball and other waterproof, anti-gas series of knitting needle hole at the needle hole, to achieve a seal (water leakage, anti-leakage) effect of a tape.
   It is well known that clothing must have pinholes in processing and production. Of course, the waterproof series is no exception. How to ensure that these needles do not leak water, so the seemingly simple problem has puzzled us for thousands of years, because ordinary tape does not have the force when it meets water. .
   In the 20th century, only a very small number of countries used in the world, the materials are very expensive, only in the United States, the Soviet Union and other countries with more developed military industry, and it is only used in aerospace technology. For other countries is more technical confidentiality.