| 摘要 |
A system for applying adhesive (208) to a facing (216) that will be adhered to a glass wool strip is disclosed. Such a system includes a gravure roll having an image in the form of a pattern (304) etched in the circumferential surface (203), a coating mechanism to apply adhesive to fill the pattern and to prevent adhesive from being presented on non-image areas of the circumferential surface of the gravure roll; and a facing source (217) to pass the facing against the circumferential surface of the gravure so that the adhesive in the pattern is adsorbed by the facing. Another version of the system includes a satellite trough (206) that moves along the circumference of the gravure roll. This permits the system to be adjusted in response to variations in the cure time of the adhesive before it comes into contact with the facing. A Mayer rod (220) is disclosed which may be used in place of a gravure roll. Also disclosed is another system that not only coats the adhesive onto the facing using the gravure roll or Mayer rod, but also then applies this facing to a strip of mineral wool or glass fiber. |
