method and device for the production of flaechenmaessig limited klebstoffaufstrichen

摘要

836,097. Coating webs with adhesives. BEIERSDORF & CO. A.G., P. June 2, 1958 [June 8, 1957], No. 17584/58. Class 140. An apparatus for coating a porous backing material 6 with adhesive comprises a cylinder 4 having perforations 7, a suction table 5, means for supplying adhesive under pressure to the interior of the cylinder 4, e.g. through a pipe 8, means for moving the table 5 and rotating the cylinder 4 in juxtaposition, and means for passing the material 6 between the cylinder 4 and table 5 whereby a pattern of adhesive is delivered through the perforations 7 on to the material 6. The table 5 comprises an endless belt 9 passing over an opening 10 through which suction is applied. The perforations 7 may be disposed to provide the material 6 with letters or numbers of adhesive. The belt 9 and cylinder 4 travel at equal speeds. The pressure delivers adhesive to the apertures 7 and the suction draws the adhesive through them. The degree of pressure and of suction is adjustable, and the belt 9 may follow a curved path, as shown, or a straight one below the cylinder 4.