| 摘要 |
The present invention relates to a method of manufacturing a stretched mechanical fastening web laminate ( 1 ) comprising a thermoplastic web layer ( 13 ) having two major surfaces, one of the major surfaces bearing a multitude of male fastening elements ( 14 ) suitable for engagement with a corresponding female fastening material, and on its other major surface a fibrous web layer ( 11 ), said method comprising the steps of (i) providing the fibrous web layer ( 11 ) having an initial basis weight, (ii) passing the fibrous web layer ( 11 ) through a nip formed by two rolls ( 101 ), ( 103 ), one of them having cavities ( 120 ) that are the negatives of a plurality of male fastening elements ( 14 ), introducing a molten thermoplastic resin into the cavities ( 120 ) in excess of an amount that would fill the cavities ( 120 ) which excess forms the thermoplastic web layer ( 13 ), allowing the resin to at least partially solidify and stripping of a precursor web laminate ( 10 ) thus formed comprising the fibrous web layer ( 11 ) and the thermoplastic web layer ( 13 ) bearing a plurality of male fastening elements ( 14 ), from the cylindrical roll ( 103 ) having cavities ( 120 ) whereby the thermoplastic web layer ( 13 ) has an initial thickness and an initial hook density, and (iii) stretching the precursor web laminate ( 10 ) monoaxially or biaxially thereby decreasing the basis weight of the fibrous web layer ( 11 ) and the thickness of the thermoplastic web layer ( 13 ) from their respective initial values to provide a stretched mechanical fastening laminate ( 1 ) having a basis weight of less than 100 g.m<SUP>-2</SUP>.
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