Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With work feeding or handling means
Patent
1997-07-08
1998-10-13
Osele, Mark A.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With work feeding or handling means
156579, 2423641, B32B 3100
Patent
active
058207287
DESCRIPTION:
BRIEF SUMMARY
This invention is concerned with tape dispensers for applying a coating composition as a strip or band to a substrate. For example, there are known so-called correction tape dispensers in which supply and take-up spools for a plastics carrier ribbon onto one side of which a correction composition is initially coated are housed in a holder which is held in the hand during use. In passing from the supply spool to the take-up spool the carrier ribbon passes around an edge defined by an application element and by means of which the ribbon is pressed against the surface of a sheet of paper in order to transfer the coating composition onto the paper such as to facilitate the correction of a mistake made during writing. The edge of the applicator element defines a sharp bend in the ribbon path to assist the release of the coating composition from the ribbon. As the edge is moved across the paper, fresh coated ribbon is drawn from the supply spool while the take-up spool is driven to wind up the ribbon which the edge has passed over and hence from which the coating composition has been removed. Thus, a straight continuous strip of coating composition is laid down on the paper surface until the forward movement of the application element is stopped and it is lifted away from the paper. The correction tape dispensers currently available work generally satisfactorily, but they are not without their drawbacks. Some require the holders to be held in rather unnatural or awkward orientations. In addition, some care or skill is needed to ensure that the edge remains flat on the surface when laying down a strip of coating composition otherwise it may not release correctly from the ribbon with the result that the strip laid down onto the paper will be ragged or incomplete. To overcome this problem it has been proposed in our copending International patent application No. PCT/US94/06585 to mount the application element for pivotal movement about an axis ideally disposed substantially in the plane of the paper and perpendicular to the edge. Another drawback suffered by known correction tape dispensers is that the edge must be initially oriented and maintained substantially perpendicular to the direction of movement of the applicator tip across the paper surface when laying down a strip of coating composition otherwise there is a strong tendency for the tape to slide along the edge, possibly becoming disengaged from it completely, which again will detract from smooth operation of the dispenser.
The present invention addresses the latter drawback and as a solution it proposes a tape dispenser for applying a strip of a coating composition to a substrate, comprising a holder containing a supply spool of tape consisting of a carrier ribbon coated on one side with the coating composition, and a take-up spool for used tape consisting of carrier ribbon from which the coating composition has been removed, the tape being guided to pass between the supply and take up spools around an edge of an application tip element used to press the carrier ribbon against the substrate to transfer the coating composition onto the substrate, wherein the application tip element is coupled to the holder for movement about a predetermined axis substantially aligned with the direction in which the application tip element is pressed against the substrate in use of the dispenser, whereby frictional forces exerted on the application tip element during movement of the application tip element across the substrate surface cause the application tip element to move about said predetermined axis to maintain the edge substantially perpendicular to the direction of said movement of the application tip element across the substrate surface.
By providing the application tip element with some freedom of movement about a generally upright predetermined axis, the element is able to adjust and compensate for failure of the user to present the edge against the substrate to lie perpendicular to the length of the strip of composition to be laid down, and/or to maintain this o
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Stevens Christopher John
White Robert
Cekala Chester
Howley David A.
Osele Mark A.
The Gillette Company
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