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Method for producing a tampon wrapped in a protective cover

A protective sleeve and plug technology, which can be used in tampons, medical science, absorbent pads, etc., can solve problems such as equipment consumption

Active Publication Date: 2012-10-31
RUGGLI PROJECTS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of such stoppers into prefabricated film sleeves requires increased equipment outlay

Method used

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  • Method for producing a tampon wrapped in a protective cover
  • Method for producing a tampon wrapped in a protective cover

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] pass figure 1 The device described in simplified form can carry out the method according to the invention. A pressing tool is referenced 1 and in this exemplary embodiment consists of eight radially movable pressing jaws 1a. The pressing jaws 1a are provided with pressing surfaces and additionally each have a pressing blade 1b that projects further in the radial direction. If the pressing jaws 1a of the pressing tool are closed after introducing a blank V of any cross-sectional shape made of absorbent fibers, the resulting preform V has a relatively compressed core and consists of axially extending ribs. The formed edge regions and the longitudinal grooves extending between the ribs improve the absorbency of the subsequent finished stopper.

[0016] The preform V is axially ejected from the pressing tool 1 by means of an ejection rod (not shown in the drawing). Arranged behind the pressing tool 1 in the ejection direction is a forming tool 4 with a conical inner cont...

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Abstract

The invention relates to a method for producing a tampon (T) wrapped in a protective cover, from a preform (V) which is preferably pre-formed by winding a fibrous nonwoven strip. Said preform (V) is formed in such a way as to form the tampon in separate compression steps by compression forces acting thereon from the outside, and is provided with a film sleeve (10) as a protective cover tightly surrounding the tampon (T), for the individual wrapping thereof. The aim of the invention is to reduce the production means require to produce a tampon, especially a non-circular tampon, up to the individual wrapping thereof in the protective cover. To this end, the essentially cylindrical preform (V) is arranged in the film sleeve (10) surrounding at least the envelope surface of the preform (V), before the last deformation step (15). The preform (V) is then supplied, with the surrounding film sleeve (10), to the last step (15), and formed between at least two compression jaws (20a, 20b) that can be moved in relation to each other, until a non-cylindrical end form is obtained.

Description

technical field [0001] The invention relates to a method for producing a stopper wrapped in a protective sheath, which is produced from a preform, preferably by winding a strip of fibrous non-woven fabric, which preform is obtained in separate deformation stages from The preform is deformed into the plug by external pressure acting on the preform, and the preform is provided as a protective sleeve with a film sheath fixedly surrounding the plug for the individual wrapping. Background technique [0002] A widely used method for producing tampons (menstrual tampons) is known from DE 39 34 153 C2. The pressing of the preform produced from the wound fiber nonwoven strip takes place in multiple stages. In the first stage, two sets of pressing jaws are adjustable centripetally towards the longitudinal axis and are provided with pressing blades in order to form the preform into a corrugated plug with longitudinal grooves and ribs arranged therebetween. Axial pushing of the prefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/20
CPCA61F13/2082A61F2013/15382A61F2013/15373
Inventor K·罗利
Owner RUGGLI PROJECTS AG
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