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Optical Systems

Method-for-applying-an-embossing-foil-to-a-flexible-material

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Method for applying an embossing foil to a flexible material

Details

Inventors: Mitsam, Reinwald;
Assignee: Messrs. Leonhard Kurz (DE)
Primary Examiner: Czaja; Donald E.
Assistant Examiner: Falasco; Louis
Attorney, Agent or Firm: Marn; Louis E.

A method of applying an embossing foil to a portion of flexible material comprises passing the material with the foil thereon over a substantial distance along a heated surface of a support member such as a roller. The material and the foil are jointly pressed against the heated surface of the support member, and thus against each other by a plurality of pressure rollers disposed at a spacing from each other along the heated surface. Apparatus for carrying out the method comprises an array of pressure elements such as rollers such that the rollers can be applied against a support roller in a progressive mode of actuation starting from the center of the pressure roller array and moving outwardly towards the ends thereof. The support roller is driven by a variable drive means or an adjustable-torque slipping clutch.

DETAILED DESCRIPTION An object of the present invention is to overcome the disadvantages of the above-discussed methods and apparatus.
A further object of the present invention is to provide a method of fixedly applying an embossing or textured foil or film to a flexible web of material at high operating speed.
Another object of the invention is to provide a method of applying an embossing or decorative foil to a web of material securely but without detrimentally affecting the quality of either the material or the decorative foil.
Yet another object of the present invention is to provide a method of applying a decorative foil to a flexible strip of material which involves repeatedly pressing the foil against the material, thereby obviating the need for an operating temperature such as detrimentally to affect the materials used.
A still further object of the present invention is to provide a method of applying a decorative foil to a strip of material without repeatedly heating the material and/or foil in a plurality of separated heating operations Still another object of the invention is to provide an apparatus for applying a decorative or embossing foil to a web of material, which has only a single heating station for heating the materials concerned.
A still further object of the invention is to provide such an apparatus which permits continuous operation in a satisfactory manner without detrimentally affecting the materials concerned.
Yet another object of the invention is to provide such an apparatus which facilitates inserting the web of material and the foil into the apparatus in the start-up phase.
Yet a further object of the invention is to provide an apparatus for applying an embossing or decorative foil to a strip of material, which is amenable to entirely automated operation.
Still another object of the invention is to provide such an apparatus, which enables the materials passing through the apparatus to be maintained under an at least substantially constant tension.
These and other objects are achieved by a method for applying an embossing or textured or decorative film or foil to a flexible material, for example in the form of a strip or elongate web, wherein a hot embossing foil in strip form is heated and at the same time pressed by means of at least one pressure roller against the web of material to which it is to be secured, with the web of material being supported against a heated surface of a support member such as a roller

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