| 摘要 |
According to the process, the bandage is subjected to a retraction operation; the bandage is wound on to a treatment roll; the wound roll is driven by a control device to ensure that it unwinds positively with respect to the initial elongation, and then successively and continuously: on leaving the treatment roll, the bandage is subjected to another retraction operation which confers on it another percentage elongation; an aqueous emulsion of natural gun is projected on to one surface of the bandage; this surface is subjected to a drying operation; the bandage is wound on to a receiving roll; the receiving roll is substituted for the original treatment roll; an aqueous emulsion of natural gum is projected on to the other surface of the bandage which is then subjected to a drying operation to obtain a plurality of small loops of rubber. |
