US 5,849,145 A · Device and a process for the continuous, warm smearing of hotmelt adhesive onto a plastic film

Abstract

A device and the related process for the continuous, warm smearing of a thin, hotmelt adhesive layer onto a plastic film (8) to be coupled with a paper support, comprising a blade (1) dosing device for the hotmelt adhesive, with means for adjusting the width of the adhesive strip to be applied as well as the thickness of the same; also comprising a further device for applying the adhesive onto said plastic film, mainly consisting of coupled dispensing roller means (2) and pushing roller means (3); sensor means (5) for bearing and adjusting the detachment position from the dispensing roller means (2) of the smeared film (8), and a device for further spreading and leveling of the film (8) consisting of the coupling of the spreading roller means (4) with pushing roller means (3), wherein the spreading roller means (4) may be possibly artificially cooled down.

Claims13

Dependent claims

A device for the continuous, warm smearing of hotmelt adhesive onto a plastic film comprising

a heated dosing means for dosing the adhesive;
heated dispensing roller means opposite said dosing means onto which the adhesive is dosed by said dosing means;
pushing roller means pressing against said dispensing roller means for pushing said film through a first nip between itself and said dispensing roller means as adhesive is smeared onto said film;
spreading roller means for spreading said smeared adhesive on said film;
and
sensor means which detects a loop formed between said first nip and said pushing roller means at the point where said film is pulled from said dispensing roller means.

3 more elements

Dependencies are inferred from the claim text.

Device and a process for the continuous, warm smearing of hotmelt adhesive onto a plastic film

Life of this patent

Device and a process for the continuous, warm smearing of hotmelt adhesive onto a plastic film

Life of this patent

Abstract

Claims13