Hcd Hygienic Composites Development Gmbh

Werner Wagner

The invention relates to a method for producing a structured, voluminous non-woven web or velourised film from a thermoplastic by producing an unstructured web and subsequently processing this web using a pair of rollers ( ). The pair of rollers consists of a positive roller ( ) having numerous positive bodies distributed over the roll sleeve surface and a negative roller ( ) having equally as numerous cavities. During the rolling process, the positive bodies engage with the cavities and stretch the unstructured web in the area of the roller engagements in such a way that a deep-drawn web structure with numerous cavities is produced. After the web has passed through a roller gap, the deformed web, still bonded to the positive roller, is brought into contact with a perforating tool and perforated.

Method and device for producing a structured, voluminous non-woven web or film

A method and apparatus are disclosed for producing a surface-structured, film semi-finished product made of a thermoplastic which is applied onto a prepared surface with numerous fine cavities provided in the form of pocket borings and is correspondingly shaped. The solidified plastic material is removed from the surface as a structured film, whereby the thermoplastic material which is inserted into the cavities and removed from the same forms a pile comprised of projections and naps. The projections which form the pile are stretch by combing, brushing, using a squeegee, and/or by squeezing by shearing in order to form naps.

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Alcudia, Spain

Werner Wagner