Coating apparatus – With heat exchange – drying – or non-coating gas or vapor... – Plural treatments
Reexamination Certificate
2000-02-29
2001-12-11
Crispino, Richard (Department: 1734)
Coating apparatus
With heat exchange, drying, or non-coating gas or vapor...
Plural treatments
C118S072000, C118S500000
Reexamination Certificate
active
06328797
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a cleaning and epoxy application table for laminate strips.
A strip of material may be adhered to a substrate, or built up on other strips of material, by spreading a film of adhesive on one side of the strip, and then pressing the strip against the substrate. It is important that the adhesive application be uniform: that is, no spots should be left uncoated, and the film should have a uniform thickness. An additional requirement for optimum adhesive performance is that the strip surface be free of oil and other contaminants before the adhesive is applied. It is customary to spray the strip surface with an solvent like MEK, prior to applying the adhesive.
Large manual lamination jobs involve repetitive motion which is fatiguing, particularly if the worker is required to manipulate and control the strip material unduly. A good lamination table, specifically designed for this type of job, would help reduce worker fatigue and could improve productivity.
Some prior tables for applying glue to various materials have been developed. Examples are disclosed in U.S. Pat. Nos. 5,895,546, 5,059,276, 5,039,375, 4,702,664, 4,371,309, 4,039,369, 4,010,203, 3,986,917 and 3,367,823. None of these devices, however, is particularly suitable for handling laminate strip material which must be cleaned and then coated with adhesive.
SUMMARY OF THE INVENTION
An object of the invention is to simplify the task of cleaning laminate strip material and applying epoxy adhesive to the cleaned surface. Related objects are to reduce worker fatigue and improve productivity.
These and other objects are attained by a cleaning and epoxy application table for laminate strips as described in detail further below. The table is fitted with means such as guide rails for guiding laminate strip material along a path from an upstream end of the table to a downstream end thereof, and with a solvent sprayer for directing a solvent mist at the upper surface of the laminate strip. The solvent-wetted surface of the strip is sourced by an abrasive pad. Air jets downstream of the sprayer remove solvent from said surface, and then the strip passes through a box of adhesive which adheres to the surface. The strip material leaves the adhesive box coated with a film of adhesive.
REFERENCES:
patent: 3367823 (1968-02-01), Clausen et al.
patent: 3986917 (1976-10-01), Diaz
patent: 4010203 (1977-03-01), Aylon
patent: 4039369 (1977-08-01), Versteege
patent: 4371309 (1983-02-01), Principe et al.
patent: 4702664 (1987-10-01), Lukens, Jr.
patent: 5039375 (1991-08-01), DeLigt et al.
patent: 5052332 (1991-10-01), Hajek et al.
patent: 5059276 (1991-10-01), DeLigt et al.
patent: 5279667 (1994-01-01), Blankenship et al.
patent: 5895546 (1999-04-01), Bielfeldt et al.
Fiorito Tony
Parzych Jeffrey G.
Crispino Richard
Shoemaker and Mattare
Tadesse Yewebdar T.
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