| 摘要 |
<p>An adhesive tape or sheet comprises a support of PVC obtd by suspension polymerisation, the support being 12-35 pref. 15-30 mu thick, an adhesive layer on one surface and an anti-adhesive layer on the other surface. The anti-adhesive material is an alkyl carbamate, pref. octadecyl carbamate, soluble PTFE, a soapa or Al stearate. Pref. a layer contg. a binder and a matting agent is interposed between teh support and the anti-adhesive layer Alternatively a binder and a matting agent are mixed with the anti-adhesive material. The tape has the requirerd mechanical properties, comprises a small amt. of support, can be written on and can be easily wound or unwound.</p> |
