FR2482452A1 - PERIODIC PAD HAVING SURFACE COATING - Google Patents

Abstract

THE PERIODIC BUFFER ACCORDING TO THE INVENTION CONSISTS OF A ROLL OF COMPRESSED FIBROUS MATERIAL, USABLE FOR THE INTERNAL PROTECTION OF WOMEN DURING THEIR PERIODS; TO FACILITATE THE INTRODUCTION AND EXTRACTION, AFTER USE OF THE PERIODIC BUFFER ACCORDING TO THE INVENTION, THE LATTER CONTAINS ON ITS OUTER WALL A LAYER OF A THICKENING OR GELIFYING AGENT CONSTITUTED BY A POLYSACCHARIDE EXTRACTED FROM PLANTS.

Description

The present invention relates to a cata-

menial consisting of a compressed absorbent roll, for example of cellulose wadding or cotton fibers used by women as internal protective lining against

live menstrual flow.

  To increase their ease of use,

  periodic pads of this kind are generally

added to the inside of an injector formed by a cylindrical element where the periodic tampon is placed, this cylindrical element being provided at one of its ends with a piston which makes it possible to push the tampon outside of

  the cylindrical element and thus ensure its establishment.

  Once placed in a humid environment, the periodic pads are capable of considerably increasing in volume due to the highly absorbent nature of the fibrous material which constitutes them; but at the end of menstruation, there may occur, precisely because of this highly absorbent character, drying of the mucous membranes and difficulties

extraction of the periodic buffer.

  In order to facilitate the establishment and.

the withdrawal of periodic buffers, it has already been proposed, in French patent -69 38,453 issued on January 28, 1971, to

coat the outer wall of the pad with a layer of lubricant

trusting, for example of a layer of certain poly-

  vinyl. Such a coating, if it actually makes it easier to insert or extract after using the periodic tampon, nevertheless has the drawback of substantially reducing the penetration of bodily fluids into the tampon in its area which is coated with lubricant. It is for this reason that, in the French patent under consideration, it was proposed to apply the lubricant only

  on the end of the buffer through which the intro is carried out

duction.

The present invention aims to provide a tam-

  periodic pon, the lubricating external coating of which does not

  does not constitute a body barrier for bodily fluids

  capable of greatly reducing their penetration inside

  laughing pad. The tampon coating according to the invention takes on a gelatinous consistency in a humid environment, which

prevents at the end of menstruation, drying of the mucous membranes and fa-

favors the extraction of the periodic buffer after use.

  The present invention therefore relates to a tam-

  periodic pon of the type indicated above, characterized by

  makes the outer wall of the tampon at least partial-

  also coated with a layer of at least one thickening agent

or gelling agent.

  In a preferred embodiment, the layer of thickening or gelling agent is placed on the wall

side of the periodic buffer.

  In the present invention, the thickening agent

  or gelling agent is preferably constituted by polysaccha-

wrinkles extracted from plants and more specifically from seeds or

  seaweed. Among the polysaccharides extracted from plants, '.

usable as thickening or gelling agent, mention may be made of gum. guar, carob gum, tara gum, gum arabic, tragacanth, gum

  karaya, agar-agar, alginates, -------- in particular al-

  calcium ginate, carrageenans, gelatin and psyl-

lium. The thickeners or gelling agents listed above are generally available commercially in the form of powder or flour. To coat the periodic buffer according to the invention, the powder or flour of the thickening or gelling agent chosen is dissolved in water so as to form a viscous solution containing from about 1 to about 10% in weight of agent relative to the total weight of the solution. Such a solution is applied

  by any appropriate means, either on the fibrous sheet intended

born to constitute the periodic tampon, that is to say still on the tampon proper, after winding of the fibrous web

  on itself, before or after the compression

sion of the roll thus formed. When the coating operation is completed, drying is carried out, for example in an oven in

  a temperature of 1200C, so as to form a sensitive layer

completely dry around the periodic tampon.

  The grammage of the thickening agent layer

or gelling agent applied to the periodic tampon according to the

  vention is preferably between 1 g / m2 and oo g / m2,

  the surface being marked on the pad in the compressed state.

  In the aqueous solution of the thickening or gelling agent intended for coating the periodic buffer according to the invention, it is advantageous to incorporate a substance acting as a plasticizer and making it possible to obtain more

  soft to the touch and more flexible o Among the plas-

  as examples, mention may be made, for example, of glycerol utlli-

  dried at 10% to 50% by weight in the solution of

  duction. In an advantageous variant of the invention, the periodic tampon is further coated, preferably on a part of its outer wall, which is not coated with the layer of thickening or gelling agent with a lubricant taken from the group formed by glycerides, fatty alcohols or a mixture of paraffin and petrolatum. The presence

the purpose of the lubricant is to facilitate the introduction of the

periodic pon in its use position.

  To better understand the object of the invention

  tion, we will now describe it, as an example purely

  Illustrative and not limiting, an embodiment represented

  felt in the attached drawing, In this drawing: - the single figure represents, in perspective, an injector

provided with a periodic buffer according to the invention.

  Referring to the drawing, it can be seen that there has been designated by 1, a conventional type injector consisting of a cylindrical element 2 and a piston 3 capable of sliding the interior of said element. In the cylindrical element 2, is also housed a periodic buffer 4 according to the invention. For reasons of clarity, the periodic buffer 4 is shown

partially extended out of the cylindrical element 2. The part

lateral king of the periodic tampon 4 comprises four folds 5, which appear, seen from the outside, like grooves made in the wall of the tampon 4. The four folds 5 are parallel to the axis of the tampon 4; they are distributed on this element every 90; the length of the periodic buffer 4

  is about 5 cm and its outside diameter measured below

outside the folds 5 is about 1.3 cm.

  To the periodic buffer 4 is attached a cord 6 intended to allow its extraction, after use. Cord 6

crosses the piston 3 of the injector.

  Periodic buffer 4 is made from

  a layer of cotton and viscose fibers; this last-

  nière is, in a known manner, wound on itself then formed

tightly compressed, the four folds 5 being formed at the time

compression.

The essential characteristic of the periodic buffer 4 is that its side wall is coated, outside

folds 5, a layer of a thickening or freezing agent

confident. The thickening or gelling agent used is chosen

  from one of the following products: alginates, -

  13 gum arabic, locust bean gum, tragacanth,

  karaya gum, carob flour and tara gum.

  To apply the thickening or gelling agent, an aqueous solution of the thickening or gelling agent is prepared containing by weight from 1 to 7 of said agent. In this example, the above coating solution is applied to the side wall of the periodic tampon 4, once the latter has been strongly compressed and the folds 5 have been formed. The thickening or gelling agent thus forms on each zone of the lateral wall of the pad 4 which is

between two folds 5, a layer substantially conti-

  naked. Then dry the periodic buffer 4 which has been

  duit, using means, such as hot air or infrared drying. The amount of thickening agent

or gelling agent applied to the periodic buffer 4 is approx.

ron 10 g / m2.

  Alternatively, you can apply on the end

  of the periodic buffer 4, which is opposite the piston 3 of the

  nozzle, a lubricant such as a mixture of paraffin and

  petroleum jelly, in order to further facilitate intro-

duction of the periodic buffer 4.

It is observed that the layer of thickening or gelling agent has the effect of facilitating the introduction and the placement of the periodic tampon 4. In the presence of body fluids, the layer of thickening or gelling agent forms a gelatinous medium which does not 'not oppose the penetration of said fluids inside the periodic buffer 4 and which, at the same time, maintains a certain humidity in contact with the mucous membranes, warding off any risk of irritation. When the user is at the end of her period, it does not occur

  not, due to the presence of this gelatinous medium, of adhe-

  rence of the periodic buffer 4 on the mucous membranes, so

  that the extraction of the latter is greatly facilitated

read. It is understood that the embodiment described above is in no way limiting and may give rise to any desirable modifications, without going out for

that of the scope of the invention.

Claims (6)

  1 - Periodic tampon used by women as a gar- internal protection against menstrual flow, said pad consisting of a roll of fibrous material comprising   award-winning whose outer wall is at least partially re-   coated with a layer of at least one thickening or gelating agent   confident, characterized by the fact that the thickening or   lifier used consists of polysaccharides extracted from plants taken from the group formed by guar gum,   caroabe gum, tara gum, gum arabic, gum-   me tragic, karaya gum, agar-agar, carrageenan nes and the osvllUin. 2 - Periodic buffer according to claim 1, charac- terrified by the fact that the layer of thickening agent or gel- Fiant is arranged on the side wall of the tampon (4).   3 - Periodic buffer according to claim 2, the pa-   lateral king of said tampon comprising folds arranged parallel along the axis of said pad, characterized in that the layer of thickening or gelling agent is placed on the side wall of the buffer (4), outside the folds (5). 4 - Periodic buffer according to one of claims 1 to 3, characterized in that the layer of thickening or gelling agent is obtained by coating, by means of an aqueous solution containing by weight of approximately 1 to 10% of said agent, or of the fibrous sheet intended to constitute the periodic buffer that, either still from the periodic buffer proper after- rolling of the fibrous web on itself, previously or   after compression of the roll thus formed.   - Periodic buffer according to one of claims 1   to 4, characterized in that the layer of thickening agent The health or gelling agent also contains a plasticizing agent. 6 - Periodic buffer according to claim 5, charac-   terrified by the fact that the plasticizing agent used is gly- cerol. 7 - Periodic buffer according to one of claims 1   to 6, characterized in that the layer of thickening agent   health or gelling agent has a basis weight between 1 g / m2 and   1w g / m 2, the surface being marked on the pad in the com- premium.