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    • 94. 发明公开
    • GLUE SPREADING APPARATUS
    • LEIMAUFTRAGSVORRICHTUNG
    • EP2162236A2
    • 2010-03-17
    • EP08751048.3
    • 2008-05-21
    • Fravol Export S.r.l.
    • SANDON, Mauro
    • B05C5/04B05C11/10B05C1/00B05C1/10
    • B05C11/1039B05C1/006B05C1/10B05C11/1042
    • Glue spreading apparatus, which comprises a containment tank (4) carrying associated heating means to make the glue fluid and a glue distribution head suitable for picking the glue up from the containment tank and for spreading it on a tape through a dosaging roller (6). The head (5) is provided with a return duct (8) suitable for making the excess glue from the collection chamber defined by the dosaging roller (6) go back into the containment tank. The distribution head (5) carries an associated circulation valve (9) arranged to interfere with the return duct (8), able to be moved into an open position allowing the glue to go back into the containment tank (4) transferring the excess from the collection chamber. The distribution head (5) also carries an associated expulsion valve (10) arranged to interfere with the return duct upstream of the circulation valve (9), which can be closed, which with said circulation valve (9) open allows the inflow of glue from the collection chamber to the containment tank (4) through the circulation valve (9), or which can be open which with the circulation valve (9) closed determines the outflow of the glue through an expulsion channel (11).
    • 97. 发明授权
    • ROTATIONSAUFTRAGSKOPF
    • 旋转次序HEADER
    • EP1042074B1
    • 2003-04-02
    • EP98966344.8
    • 1998-12-16
    • Puffe, Wolfgang
    • Puffe, Wolfgang
    • B05C5/02B05C1/10
    • B05C11/1026B05C1/10B05C5/0233B05C5/0258B05C5/0275
    • The invention relates to an applicator head (11) for contactless application of hot-melt adhesive on a material web (22). Said head comprises a housing (12) and a roll chamber (20) located in the housing (12). A roll slider (13) is stored in said roll chamber such that it can be rotationally driven. The inventive head also comprises at least one delivery opening for guiding adhesive into the roll chamber (20) and a slotted nozzle (18) for yielding adhesive. The nozzle can be controlled by the roll slider (13) and extends transversally in relation to the direction of movement pertaining to the material web (22). The roll slider (13) has a cylinder surface which can seal the slotted nozzle (18) from the inside. Said roll slider also has surface grooves (17) in the cylinder surface which can communicate with the slotted nozzle according to the position of rotation. In addition, the roll slider (13) either has an inner cavity (29) to which medium can be fed via delivery openings and radial outlet bore holes (28) which extend from the inner cavity up to the surface grooves, or a snail-shaped or helical-shaped surface groove in the cylinder surface as well as a supply volume for medium inside the roll chamber, said supply volume communicating with at least one surface groove.