| 摘要 |
<p>The method involves subjecting a compound (21) to a hot tempering, in which the compound is heated at a temperature more than the melting point of a layer, which contracts upto 1 percent to 10 percent. The non-woven material is increased in hight by lowering the dimension in the surface and the compound is cooled at a temperature lower than he melting point of the foil. An independent claim is also included for a compound made of a non-woven material from a staple fiber based on polypropylene, polyethylene or mixtures of polypropylene and polyethylene, where a layer of polyolefin foil is provided and the polyolefin is a low-density polyethylene, a lenear low-density polyethylene or polypropylene.</p> |
