Nozzle systems for edgebanding plants impinging hot air on adhesive-free, heat-activatable or provided edgebands or workpieces with hot-melt adhesive and edgebanding systems with nozzle systems

Abstract

The invention relates to a nozzle system (1) for an edgeband application device (1) for impinging hot air on edgebands (2) or workpieces that are adhesive-free, heat-activatable or provided with hot-melt adhesive, the The nozzle system comprises a nozzle body (3), which has: at least one air inlet channel (20, 21), which can be connected to the hot air generator, so that the nozzle can be supplied during the operation of the edge strip application equipment. The body (3) conveys high-pressure hot air; at least two groups (4a, 4b, 4c) of air outlets (40), wherein the air outlets (40) are vertically spaced apart from each other and are constructed on the nozzle body (3) On the air ejection surface (30) facing the edge banding (2) and in flow connection with the at least one air inlet channel (20, 21), so that the at least two groups (4a, 4b, 4c) of air ejection ports ( 40) The feeding direction of the edge banding strip (2) is spaced apart from each other, and the hot air fed to the nozzle body (3) can flow out from the air outlet (40) and can impact the heatable air of the edge banding strip (2). Activated functional layer; the same number of closure devices (6, 6') as the number of groups (4a, 4b, 4c) of air discharge openings (40), which are constructed in such a way that the air discharge openings (40 ) can be selectively opened or closed in relation to the width of the conveyed edge strip (2).

Description

Technical field [0001] The invention relates to a nozzle system for an adhesive-free, heat-activatable or hot-melt adhesive-free edge-banding strip or an edge-banding strip coating equipment that impacts hot air on a workpiece. In addition, the present invention relates to an edge banding device with a nozzle system. Background technique [0002] As we all know, there are various different implementations of edge banding equipment (usually called edge gluing equipment) in the prior art. With these edge banding equipment, the edge banding can be applied to the workpiece. On the narrow side. The edge bands, which are also commonly referred to as Umleimer tapes, can for example have a heat-activatable adhesive on one side. The adhesive is activated by impacting hot air or hot air in the edge banding equipment, so that after the edge banding is pasted and pressed to the narrow side of the workpiece, the material of the edge band and the narrow side can be locked. (Stoffschluessig)...

AI Technical Summary

Problems solved by technology

It has been found that the use of adhesives when applying edge strips to narrow sides of workpieces has several disadvantages

In addition to process-technical difficulties, there is often the problem that the adhesive layer remains visible to the observer after the edgeband has been applied to the workpiece and thus impairs the visual image

However, the operating speeds achievable so far are still unsatisfactory

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