| 摘要 |
A process of laminating textiles for producing air-permeable or moisture-permeable laminated textile materials involves generating a discontinuous layer of adhesive with a precise pattern of voids by means of temporarily introducing sets of parallel yarns or, alternatively, mesh-like webs in contact with an initially uniform layer of adhesive temporarily carried on a release-coated carrier. After the adhesive layer and the mesh-like web have been pushed into contact with a first fabric layer, the release-coated carrier is stripped away, along with the mesh-like web, from the first fabric layer. The adhesive layer remaining on the first fabric layer will exhibit a discontinuous pattern that is complementary to the mesh-like web pattern. Subsequently, a second fabric, or film, is bonded to the exposed adhesive surface on the first fabric to create a laminated material exhibiting air permeability or moisture permeability. The laminating process according to the present invention significantly increases the ability to control the extent and pattern of voids in the adhesive layer of a laminated fabric material without incurring significantly added cost or time for manufacturing. The increased ability to control the extent and pattern of voids results in several benefits. When two fabric layers are laminated using the process according to the present invention, the process enables accurate control of the resulting laminate's wind resistance to specific target values. Furthermore, the process enhances control over the resulting laminate's handle and drape. When a fabric is laminated to a barrier film, the process according to the present invention enables accurate control of adhesive coverage/pattern to easily balance the bond strength against the following conflicting properties: a) moisture-vapor permeability, when a moisture vapor permeable film is used as one of the laminate layers; and b) soft handle and drape.
|
