| 摘要 |
<p>One surface of a first material strip(51) is coated with a hot melt and brought into contact with the surface of a second material strip(52). The two materials then pass through a belt press(2) and the melt is set to join both materials together. Hot melt is applied onto the first strip material(51) by either a rotating applicator(21), a slit die, rotational screen printing or a spinning and spraying process. The surface of the rotating applicator, e.g. an engraving roll or a rotating screen printing stencil, is structured and temperature controled. The first material moves past the rotating applicator and makes contact with it(20). Hot melt is supplied to the applicator where it fills the surface structure and is transferred onto the passing material. The speeds of the applicator and first material are different at the point of contact. Both surfaces may move in the same direction with a speed ratio of roll to material of 0.1-10 or alternatively the surfaces move in opposite directions with a speed ratio of roll to material of 0.2-5. An independent claim is included for the process plant which includes a belt press(30) for pressing the two materials together while the adhesive sets.</p> |
