Coating apparatus – With means to prepare work surface for coating
Reexamination Certificate
2000-07-21
2001-07-24
Osele, Mark A. (Department: 1734)
Coating apparatus
With means to prepare work surface for coating
C118S300000, C156S578000
Reexamination Certificate
active
06264744
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a head for applying adhesive to predefined regions of products in general.
It is known that in many industrial fields, and particularly in the shoe industry, there is the need to apply in predefined regions an adhesive material which is normally applied by means of nozzles provided for this purpose.
In order to increase the adhesion of the adhesive material to the sole, the sole is typically carded beforehand, in the region affected by the adhesive, by means of a mechanical operation performed by a milling cutter or the like, so as to facilitate the adhesion of the adhesive.
With current methods, carding must be performed on a dedicated machine, since the removed material must be first discarded; an additional step for applying the adhesive must be performed only after such material has been discarded.
Clearly, this method causes considerable problems, both because it is necessary to perform two separate passes and because in many cases it is quite difficult to apply the adhesive material exactly to the previously treated portion of surface.
SUMMARY OF THE INVENTION
The aim of the present invention is to eliminate the drawbacks noted above, by providing a head for applying adhesive in predefined regions of products in general which allows to considerably simplify all operating steps while having the assurance of performing optimum application of the adhesive.
Within the scope of this aim, a particular object of the present invention is to provide a head in which it is possible to easily control the operating sequence as regards both the carding step and the adhesive application step.
Another object of the present invention is to provide a head for applying adhesive in predefined regions of products in general which, thanks to its particular constructive characteristics, is capable of giving the greatest assurances of reliability and safety in use.
These and other objects which will become better apparent hereinafter are achieved by a head for applying adhesive in predefined regions of products in general, according to the invention, characterized in that it comprises at least one means for carding the surface to be treated which acts directly before at least one nozzle for applying a layer of adhesive material to the carded surface.
REFERENCES:
patent: 2536183 (1951-01-01), Jamieson
patent: 3568638 (1971-03-01), Isaac
patent: 4820580 (1989-04-01), Hocker et al.
patent: 3840130 C1 (1988-11-01), None
Josif Albert
Modiano Guido
O'Byrne Daniel
Osele Mark A.
Tadesse Yewebdar T.
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