Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Patent
1995-03-28
1997-01-14
Weiss, John G.
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
604904, 28119, A61F 1320, A61B 1752
Patent
active
055927254
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a tampon that is especially designed for women's hygiene and is comprised of a cylindrical blank that is manufactured by winding up a strip-shaped fiber fleece section; the blank is transformed by the application of pressing force on mantle sections that are evenly spaced about its periphery to a preformed blank with a core of higher compression of the fiber material and with longitudinal ribs of lower compression distributed around the core and which is transformed to a finished tampon by the application of radial pressure on the longitudinal ribs. Furthermore, the invention relates to a method and a device for manufacturing such a tampon.
From DE-PS 39 34 153 a tampon of the above described kind is known. In comparison with tampons that have a uniform compression throughout the entire cross-section of the tampon, this tampon has the advantage that a lower amount of material is used while still providing the same resistance to bending and the same absorbing action. The absorbing action of a tampon results from the absorbing speed which it effects and its fluid absorption capacity.
The object of the present invention is to improve a tampon as known from DE-PS 38 34 153, as well as the method and the device for manufacturing it, such that an increase of the absorbing action is possible while maintaining the resistance to bending.
SUMMARY OF THE INVENTION
A tampon, comprised of a strip of fiber fleece material rolled to a cylindrical shape, according to the present invention is primarily characterized by: area and a circular central area surrounded by the annular outer area; cylindrical shape, the longitudinal ribs abutting one another and distributed evenly about the circumference of the core; the core such that between neighboring ones of the longitudinal ribs longitudinal channels Ak are formed that are delimited radially inwardly by the core; than the fiber fleece material of the longitudinal ribs; and compressed less than the fiber fleece material of the annular outer area.
According to a further embodiment of the present invention, the tampon is produced by a process comprising the steps of: having a cylindrical mantle with mantle sections uniformly distributed over the circumference of the cylindrical blank; preformed blank having a core and longitudinal ribs extending in the longitudinal direction of the preformed blank and distributed adjacent to one another so as to surround the core, wherein the fiber fleece material of the core is compressed more strongly than the fiber fleece material of the longitudinal ribs; and finish-shaping the preformed blank to form the tampon, wherein the core of the tampon has a circular cross-section comprising an annular outer area and a circular central area surrounded by the annular outer area, wherein the fiber fleece material of the circular central area is compressed less than the fiber fleece material of the annular outer area.
The present invention also relates to a method of manufacturing a tampon. The inventive method is characterized by the steps of: having a cylindrical mantle with mantle sections uniformly distributed over the circumference of the cylindrical blank; forces are directed tangentially relative to a circular cylinder surrounding a central axis of the blank at a selected distance, and thereby forming a preformed blank having a core and longitudinal ribs extending in the longitudinal direction of the preformed blank and distributed adjacent to one another so as to surround the core, wherein the fiber fleece material of the core is compressed more strongly than the fiber fleece material of the longitudinal ribs; and finish-shaping the preformed blank to form the tampon, wherein the core of the tampon has a circular cross-section comprising an annular outer area and a circular central area surrounded by the annular outer area, wherein the fiber fleece material of the circular central area is compressed less than the fiber fleece material of the annular outer area.
The present invention also
REFERENCES:
patent: 2152230 (1939-03-01), Webb
patent: 2263909 (1941-11-01), Webb
patent: 3422496 (1969-01-01), Wolff et al.
patent: 4109354 (1978-08-01), Ronc
patent: 4498218 (1985-02-01), Friese
patent: 4685178 (1987-08-01), Nakanishi
patent: 4951368 (1990-08-01), Heinen
patent: 5403300 (1995-04-01), Howarth
Cho David J.
Karl Ruggli AG
Weiss John G.
LandOfFree
Tampon, as well as a method and a device for manufacturing it does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tampon, as well as a method and a device for manufacturing it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tampon, as well as a method and a device for manufacturing it will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1380368