摘要:
An apparatus for producing a fissured, acoustical ceiling panel wherein the pins used to fissure the panel are roll applied thereto. The pins are embedded in flexible, resilient polymeric plates, and a plurality of the plates are attached to a rotary drum which is used to apply the fissuring pins to the surface of the panel. The invention also includes the method for manufacturing the polymeric plates which are molded and formed with the fissuring pins embedded therein.
摘要:
The apparatus includes a rotatably mounted roll having an elastomeric sleeve with nails mounted therein at equal angles respectively to corresponding imaginary radial lines of the roll.