MXPA96004996A - Sanitary napkin - Google Patents

Abstract

A sanitary napkin (1) comprises a pair of grooves (5) being formed in a top surface (2) of the napkin (1) by compression-molding along transversely opposite sides of the napkin (1). Each of these grooves (5) has lower and higher density compressed zones (8,9) arranged on the bottom (5A) thereof alternately in a longitudinal direction thereof.

Description

# SANITARY TOWEL The present invention generally relates to a sanitary-and-relative-to-a-female sanitary pad to absorb and retain exudates from the body such as menstruation. The Utility Model Application Publication describes a sanitary towel formed Jump to the top of the surface along sides They are transversely opposed to each other with a pair of compression-molded slots extending longitudinally, spaced apart by a distance that gradually increases from the minimum in longitudinally midpoints thereof, to the maximum in ex-t. longitude opposites of the same ma.

Such slots provide improved adjustment of the towel to the user's inner surfaces. Also, the presence of tale. " IV grooves is effective to prevent a possible "distortion" occurring in a central region of the towel, when worn on the user's body, from the extension to the edges of the sides ? cross transversely opposite the towel. In this way, it makes it possible to avoid the problem that a quantity of body exudate could flow along with the torso on the side edges of the towel and cause lateral leakage on the clothing items. However, in a n Absorbent liquid absorbent core in the towel, the slots molded by conversion iv ^ a higher sub-ancillary density than the one • i.

The oential region of l < ? towel and the amount of '- idad? body, one ve -? - that has flowed towards the rivers, tends to spread too quickly < -. along its length. In view of the fact that the grooves are usually formed adjacent to the edges of the transverse or opposite sides of the liquid-absorbent core, rapid exudate from the body is smeared onto the side edges of the towel, and both the user's clothing that is in contact with the stained side edges e! < - towel, more often than in a towel s n t-ales slots. Therefore, it is a principal object of the invention to suppress the extension of exudates from the body along the grooves formed in the sanitary towel while maintaining an advantageous effect of these grooves. The previously established object is achieved, * conformity to the invention, with a sanitary towel that I understand? a liquid top sheet, a liquid impermeable bottom sheet, and a liquid absorbent core disposed therebetween and having a pair of slots formed by compression molding on a top surface of an absorbent ion king defined by the core, wherein the grooves extend longitudinally along mutually opposite sides of the absorbent region and the grooves are spaced apart from each other by a distance that increases gradually from the immuno at longitudinally mid-points • The same, at the most extreme, at opposite ends of the ism, with the sanitary napkin being catered because each of the slots has compressed zones of superior and inferior density on a bottom of the same. willing1; alternately in a longitudinal direction of the same. Figure 1 is a perspective view showing a partially rendered inventive sanitary towel embodiment.

Figure 2 is a fragmentary plan view showing the sanitary towel in a partially elongated scale; and Figure 3 is a sectional view taken along the line III-III in Figure 1. A sanitary napkin 1 shown by Figure 1 in a partially detached perspective view comprises a liquid-permeable upper sheet 2, one bottom sheet , * ^ * impermeable to liquid 3, and an absorbent core of Liquid 4. or 2 and the lower sheet 3 are placed on an envelope with the inner surfaces opposed to each other and imperviously joined by portions extending outwardly beyond a peripheral edge of the core k. The towel 1 is formed on an upper surface thereof with a pair of longitudinally extending compression molded slots 5 < -. along transverse sides t of it, respectively. In a longitudinal region of the towel 1 these molded grooves \ > r compression 5 are spaced apart if by distance.

This distance is progressively elongated towards < -x * opposite opposites longit-udmal of the towel 1 .. l slots b if i see effectively to provide improved adjustment of the towel 1 against the intimate parts of the user. Figures 2 and 3 are, respectively, a plan view showing a fragment of figure 1 on an elongated scale, and a sectional view taken along the line. 1 I-T-I in Figure 1. As shown, a bottom 5fi of each Fanura 5 comprises a plurality of lower density compressed zones 8 each having a thickness (height) JJ and a plurality of zones cornpr joined with higher density 9, each having a thickness- (height) C where these zones R, 9 alternate longitudinally of the slot 5. The slot has an upper opening-5B of a width greater than that of the bottom fi edges of upper openings 5C that describe arches , - circular. Both compressed zones of low density fl and compressed zones of high density 9 extend transversely through the bottom 5A, more specifically, obliquely to a longitudinal axis x of the towel 1 (as seen in figures 1 and 2). ). The respective zones 8, 9 thus extend t transversally through the bottom A and are more strech than the bottom R. The slot 5 is compression molded so that a dimensional relationship of B-fl .7 to 0.2 X fi, C - fl, 'S at 0.05 X fi yi? > C, where fi represents the thickness of the towel 1 in the non-compressed region and preferably the compressed high density cone 9 has a density of O. lg mS ^ the high while the compressed area of low density -d? it has a density lower than l < - \ of the high density molded conipi zone 9. Preferably, the slot 5 has a length that corresponds to 1/2 to 4/5 of the total length of the core 4 and a width of L to 5 rnin. Both compressed zones of density 8 and compressed area of high density () preferably have a width of 0.8 to 4 nm as the slot 5 is longitudinally measured. It is understood that the core portions 4 which extend respectively along , and adjacent to, the inner and outer side walls 5D? , Ü2, define the slot 5 and are more or less influenced by the compression molding of the slot 5 and, as a result, have a density so that the densities of the compressed zones 8, 9 but higher than the density the remaining region, which is not subjected to any compressive force. Doing Referring to Figure 3, a portion of an upper opening edge 50, continuous with the inner side wall 5D, describes a circular arc which is smooth, that is, longer, than a circular arc described by a portion of another upper opening edge 5C continuous with the outer lateral side Ü2 and therefore the portion of the core 4 which is located under the first one is compressed over a prolongation as long and at a higher density compared to the porc So, a cant i (Jad <k exudates the cue or flows into slot 5 and I tend to be- F" ls. They take predominantly through this slot 5 and extend the same over the inner sidewall. • "Say, so that the amount of body exudate does not extend through the outer side wall-5D2 toward the outer side edges. of the towel causing undesirable side leakage. As is readily understood from this effect, the slot 5 is preferably compression molded so that the portion of the core 4 rests on the inner side wall f5T)? it has a higher density than in the portion of the core 4 which is located on the outer side wall 5Ü2. This configuration of the slot 5 can be obtained by compressing the towel l in a suitable mold under a high pressure and can be stabilized, for example, by dipping the region of the towel 1 that is going to be compressed, with a small amount of water or with adhesive? hot fusion / 3-3.l between upper sheet '7 and kernel 4 followed by compression under heating, With towel 1 constructed as described above, exudates from the body extend rapidly from the compressed areas of the ba density 9 as soon as the exudates from the body discharge and flow into the slots 5 in directions indicated by arrows P, Q in figure 1. The contours of the zones 9, on the other hand, are of < A relatively low lens, so that the amount of body exudates once they have been absorbed by the fl areas hardly extends to the contours. T) e e way, ^ towel inventive 1 allow? that the exudates from the body once they have flowed into the slots 5 are prevented from not only rapidly extending longitudinally thereon but also extending outwardly from the opposite side edges of the towel 1. To implement the invention, The core 4 can be made from pulp of the fluff mixed with polymer powder _ its absorbent and / or thermoplastic synthetic fiber. Assuming that the. slot 5 is molded by compression under heating, the thermoplastic synthetic fiber can serve to stabilize the resulting confiuration of the groove 5. Preferably, the top sheet 2 is made of non-woven fabric or perforated plastic film and the lower ho is made of plastic film. The joining of the respective components to form the towel 1 can be achieved using hot melt type adhesive agent or the lled, provided that the components to be joined are of a tepnosellabl e nature. It should be noted that specific binding means are not illustrated. The inventive sanitary napkin has a pair of slots formed on the upper surface thereof thereof so as to be o > They are respectively placed along transverse sides of each other and these slots not only cause improved adjustment of the towel against the user's intimate parts but also prevent a toi ion, quo- > possibly occurs in the middle region of the towel, wing c The region r > er? fer ca of the towel. In the background of •? L < The relatively compressed areas of the dervish are arranged in the groove and the areas of relatively low density alternate in the longitudinal direction of the fundus and this characteristic serves to suppress a phenomenon of the amount of exudates from the body, once they have flowed into the slots, they could extend too quickly from the slots and thereby prevent transversely opposite the towel, as well as the user's undergarments that make contact with these lateral edges, are stained with any amount of body exudates. The groove is formed by compression molding but exposes the upper opening edge, describing a circular arc in cross section that makes the intimate user parts free of uncomfortable stimuli and pepniti- i Exudates from the body flow easily into the groove. Such a towel is generally folded at a right angle to the longitudinal direction of the same for individual packing, which results in the generation of a lot of fine transverse wrinkles in the vicinity of the fold, fine transverse wrinkles they can cause lateral leakage of exudates from the body. However, it has been found that I read invention can mitigate the generation do? fine transverse wrinkles, in comparison to the one in which the slots are not provided with funds, with, by the - ^ - < - High and low densities compressed to the ternate in the direction Longit nal of the slots, depending on the factor-such as the? nater-? to the paricular of the upper sheet. The portion of the core, which is located along the inner side wall coextensive with the outer side wall-to define each of the grooves, has a "higher lensiness than in the portion of the core that is located at * ß¡ or length of the wall later-to the outside, so that the exudates of the body are absorbed predominantly by, and extend the fairy, the portion of the nucleus that is located along the inner side wall and thus prevents o > fo.ct? va? nente lateral leakage of exudates from the body.

Claims (5)

NOVELTY OF THE INVENTION
1. CLAIMS 5 1.- A sanitary napkin comprising basi ca ??? - > A liquid-permeable top sheet, a liquid impervious sheet, and a liquid-absorbent core disposed therebetween and having a pair of foraminated slots for compression molding on an upper surface of the absorbent region defined by the presence of said core, wherein said grooves extend longitudinally along sides < transverse regions of said absorbent region and said slots are spaced apart by a distance that increases gradually from the minimum in the 15 points longitudinally half of it, to the maximum in the "longitudinally opposite ends thereof, said sanitary napkin being characterized in that each of said slots has compressed zones of higher and lower density on a bottom thereof, arranged alternately in a 20 longitudinal direction thereof. 2.- A sanitary napkin in accordance with the rei indication 1, also characterized because? said groove has a width in a top opening thereof larger than a width in a bottom of the isma and an edge of said 75 upper opening I describe? a circular arc in action t ransvers l.
2. I 1
3. ! - A sanitary towel in compliance > in claim 1, further characterized in that said compressed high and low density diameters extend obliquely to a longitudinal axis of said towel. 4. A sanitary napkin according to claim 1, further characterized in that said low density compressed zone has a larger vertical dimension than the corresponding dimension of said zone.
4. «High density tablet measured from said bottom.
5. 5. A sanitary napkin according to claim 1, further characterized in that said slot is defined by inner and outer side walls and a portion of said core which is located along said inner side wall has a higher density than a density in a portion of said core that is located at '1 < ? lar < of the outer wall wall-.