B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
B05C 1/12 (2006.01) B05C 11/10 (2006.01)
Patent
CA 2541475
This invention relates to an improved spreading unit for bonding machines which is equipped with recirculation systems that take up adhesive from the base of the reservoir in contact with the take-up roller and return it to the storage tank, from which it is sent back to the reservoir; this continuous circulation of the product guarantees that the product will maintain the ideal temperature and viscosity characteristics. In accordance with an advantageous aspect of the invention, the reservoir containing the adhesive taken up by the rollers is bounded by a pair of doctor blades which define an enclosed area in contact with the roller and are mounted on a sliding support, so that they can be moved away from the roller for cleaning, maintenance and similar operations. The reservoir is positioned at a height calculated so that adhesive is transferred to the reservoir by a calibrated gravity system, without being engaged by mechanical devices, and consequently without producing foam. This guarantees continuous recirculation of adhesive without the risk of stagnation which could cause a variation in the characteristics of the compound, and above all without foam production. Moreover, in accordance with another advantageous aspect of the invention, the reservoir is mounted on a skid that slides along guides integral with the structure of the machine, so that it can be rapidly distanced from the rollers when required for maintenance or cleaning operations.
Nordmeccanica S.p.a.
Robic
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