FR2512649A1 - ABSORBENT COMPLEX PARTICULARLY FOR THE MANUFACTURE OF FIRST CLEANING FOR FOOTWEAR - Google Patents

Abstract

THE INVENTION RELATES TO AN ABSORBENT COMPLEX SPECIALLY SUITABLE, BUT NOT EXCLUSIVELY, FOR THE MANUFACTURE OF CLEAN FIRSTS FOR FOOTWEAR. THE PROBLEM IS TO REDUCE, AS MUCH AS POSSIBLE, THE PHYSICAL DISADVANTAGES AND THE PSYCHOLOGICAL IMPACTS ASSOCIATED WITH EXCESSIVE SWEATRATION, WITHOUT OPPOSING ANY NATURAL SWEATHING. ACCORDING TO THE INVENTION, THIS RESULT IS ACHIEVED IN THAT THE ABSORBENT COMPLEX USED AS THE FIRST OF CLEANLINESS CONSISTS OF A COMPOUND OF TWO SUPERIMPOSED MATERIALS, THE FIRST FORMING IN PART OF DEFIBRILLED LEATHER FIBERS AND IN PART OF SYNTHETIC FIBERS, DIFFERENT FIBERS BEING BOUND BY THE ADDITION OF A RESINOUS BINDER, THE SECOND BEING, AS REGARDS IT, IN THE FORM OF AN ABSORBENT FELT WITH HIGH RETENTION POWER, THE TWO MATERIALS BEING ASSEMBLED OVER THEIR ENTIRE SURFACE BY A PUNCTUAL BONDING 3 AND A PERIPHERAL SEWING 4. THE INVENTION IS APPLICABLE TO ALL WINTER OR SUMMER FOOTWEAR.

Description

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  The invention relates to an absorbent complex specially adapted, but not exclusively, to the manufacture of socks for footwear. Role of perspiration: it has two important functions which are the regulation of the external temperature

  on the one hand, and the elimination of dermal toxins on the other.

  Thus, sweat decreases the temperature of the body areas-where it is bogged down, and in addition, evacuates various materials among which urea, creatinine, uric acid and so on. Stimulation of perspiration: sweat is emitted by the sweat glands which are very numerous

of the foot (375 glands / cm 2).

  The excitation of these glands is a phenomenon still relatively poorly defined, nevertheless the stimulation factors are three-fold increase in the temperature of the tissues, increased compression of tissues,

  action of the sympathetic autonomic nervous system

the law (anxiety, fear).

  The aspect of Jtitati: the q ua vity of sueu: emitted is very variable according to the subjects, the temperature and the region

from the body.

  For the whole body, the average daily value for an individual weighing sixty-five kilograms and subjected to a temperature of 250 C is between 1.5 liters and 2.5 liters. However, extreme values of a pathological nature ranging from a

  minimum of 0.10 liter to a maximum of 10 liters.

  With regard to the foot, the average emission is of the order of 15 to 20 o? per day but there are huge gaps

from one individual to another.

  Some disadvantages of perspiration are given below 2 - Despite its important and natural regulatory roles, perspiration causes the discomfort of a large part of individuals. In fact, one-third of this population suffers the permanent inconveniences of excessive perspiration and another third is subjected to these inconveniences in the summer or at the time of intense physical effort.

  On the other hand, the steady increase in

  The use of sports shoes increases the percentage of people feeling these disadvantages every year, because they are usually designed

  without taking into account hygiene problems.

  The disadvantages of perspiration are essentially of two types: an excess of moisture,

the appearance of bad smells.

  Foot humidity: as everyone knows, sweat is 99% water This moisture not only unpleasant

  to wear causes in addition to dermatoses (Atlétic Foot).

  The bad smells of the foot: the sweat, odorless at its emission, quickly becomes smelly This affection called BROMHIDROSE comes from the decomposition of the organic matters, some bacteria finding there a favorable environment to their development

  play an important role in this decomposition.

  The lack of personal hygiene and the absence

  aeration of shoes are factors that accentuate this process.

  We know some ways to reduce

  the disadvantages of perspiration at the foot.

  There are first of all chemicals with astreingent action, that is to say, which reduces perspiration by tightening the pores of the skin This anti-perspiration solution modifies a natural phenomenon that fulfills positive functions for the skin.

  body and is therefore to proscribe for obvious reasons medically.

  Leather is rightly considered the right material to avoid excessive moisture.

  leather absorbs water well but does so slowly and has no deodorant action

  rante. In addition, there are many deodorant products either atomizer or incorporated in an insole (activated carbon), but these products are very limited in time and do not solve the problem of moisture. So far, there is no product on the market that is fully and sustainably effective to remove

  the disadvantages of perspiration at the feet.

  The invention is therefore aimed at a new means making it possible to reduce, as far as possible, the disadvantages

  physical and psychological effects of excessive sweating.

  but without opposing this natural perspiration.

  This means is the result of the new combination of two known means, hitherto used separately, but never combined in the form of the same complex to obtain unexpected advantages. Nonwoven materials obtained by the dry route are known in fact made partly of short natural fibers,

  such as de-fibrillated leather fibers, and partly of synthetic fibers

  these natural and synthetic fibers are consolidated and joined together by the addition of a resinous binder, the material thus

  then forming a sewing-knitting operation.

  Other materials of the highly absorbent type are also known, for example felts with high retention capacity, consisting for the most part of cotton associated with a binder with

  synthetic fibers, for example polytetrafluoroethylene fibers,

  lene. It has been observed that the nonwoven material, because of its permeable, aerated structure and above all because of its isotropic composition and texture, has a high diffusion power, ie that the moisture absorbed locally. is located

  immediately distributed over the entire surface.

  It has also been observed that if this diffusing material is combined with a felt with high retention power, then a real moisture trap combined with a reservoir is obtained.

pumping effect.

  The invention therefore relates to an absorbent complex especially for the manufacture of first cleanliness for footwear, characterized in that it consists of a compound of two superimposed materials, the top of which plays the role of moisture diffuser and that of underneath the role of reservoir moisture or vice and versale first material being formed partly of defibrillated leather fibers and partly of synthetic fibers, these different fibers being bonded together by the addition of a resinous binder, and the second material being, meanwhile, formed of an absorbent felt with high retention capacity, the two materials being assembled over their entire

  surface by spot bonding and peripheral seam.

  According to a characteristic of the complex, the diffuser material consists of a nonwoven product obtained by the dry route and formed of 49% of defibrillated leather fibers and 50% of

  polyester fibers and 1% polyethylene.

  According to another characteristic of the com-

  plex, the reservoir material consists of an absorbent felt comprising% of cotton fibers, 23% of polytetrafluoroethylene fibers and 2%

of binder.

  A complex according to the invention is shown by way of non-limiting example in the accompanying figures in which Fig 1 is a plan view of a first cleanliness made from the complex according to the invention;

  Fig 2 is a longitudinal sectional view of Fig 1.

  According to the invention, the original complex and

  which, for the first time, makes it possible to provide a natural, uni-

  Versant and long-lasting to sweating of the foot, consists of two strictly complementary materials, assembled together in the form of a complex of binary type, the top material being preferably a nonwoven obtained by the dry route and playing the role of diffuser, while the bottom material is formed of a mattress

  non woven playing the role of moisture reservoir or vice versa.

  The top material 1 which has the purpose of trapping moisture and diffusing it instantaneously over the entire surface of the soleplate (FIG. 1) consists, in a known manner, of a -5-

  a mixture of short natural fibers and synthetic fibers

  These fibers are natural fibers which may be defibrilil leather fibers, and the synthetic fibers of the polyester fibers, the material thus imposed then being subjected to a sewing-knitting operation. This type of material generally consists of synthetic fibers. and natural fibers in substantially equal proportion, for example 50% for the first and 49% for the seconds,

plus 1% of iiant.

  These materials have a structure

  fibrous permeable and aerated, absorbing and diffusing moisture.

  This first material is combined with the reservoir mat 2 which is cut to the same contour as the first material, the two components being linked together punctually over the entire surface of the sole del; bonding points 3 (Fig 2) completed

  by a zigzag peripheral seam 4.

  The reservoir material consists of an absorbent felt formed mainly of cotton fibers and, to a lesser extent, of polytetrafluoroethylene fibers, the whole

being assembled by a binder.

  The nonwoven with high retention power is well known especially for the manufacture of diapers for children

  or, for example, articles of fairytale hygiene.

  use a felt comprising 75% cotton ribres, 23% polytetrafluoroethylene fibers and 2% binder, this material being designed in such a way that the water it retains does not come out under the pressure of the foot 9

thus avoiding the effect of sponge.

  According to another important characteristic of the invention, the first of cleanliness obtained by the superposition of the two abovementioned materials, is imrrrgr e, in depth of a special deodorant whose action is spread over time for about three months, in because of the retention of the diffuser material 1 and the reservoir constituted by the

felt 2.

  The invention therefore provides a solution to the drawbacks of moisture and odor and the measurements made by the Leather Technical Center show that the invention

_ 6 _

  has an absorption capacity greater than that of a first

  leather croupon known for this quality.

  The results are grouped in the

table below.

  The dynamic water absorption capacities were measured at the comfort permeability which represents the reality of wearing, the maximum capacities were measured by immersion in water. Values have been reported to the same

thickness of 2 mi.

  If we add these values to the surface of a size 4i sole, we can see that: 3) clon can retain 33 cm 3 of water which largely covers the average daily sweat emission

  foot which is between 15 and 20 cm 3.

  For clarity, we have reported to one square meter the quentities of water retained rame articles? + estés: Invention 1.80 l / m 2 Croupon leather 1, 40 t / 12 Syndre 0.74 1 / m 2 The invention also carries a solution to odors, due to the presence of a deodorant to

  long effectiveness This deodorant is neither a bactericide nor an anti-

  perspiran L, its action is obtained by an odor absorber.

  It was specially developed to be deposited on the stern and retained there, which increases its

lifetime.

  Caci dabsor Capacity Time of Reference of materials ption dynamic maximum crossing

_ _ _ _ _ _ _ _

  Invention 100 mg / cm 2 180 mg / cm 2 30 seconds leather croup 85 mg / cm 2 140 mg / cm 2 2 minutes syndromes coated 10 rg / -nm 2 74 mg / cm 2 20 minutes

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  When the original impregnation loses its effectiveness, the user simply refills the support, and the deodorant action leaves for three months The spray bottle containing a volume of four impregnations, the user has at his disposal a system effective over one year. The insole according to the invention has long-lasting absorption qualities. Indeed, the absorption capacity of the sole according to the invention is such that it largely covers the daily sweat emission, but plus this first dries during the night and can therefore play again

his role the next day.

  This dry time can be shortened by

  removing the first of the shoe in the evening.

  On the other hand, wearing tests show that the first according to the invention is solid and does not degrade at

  friction, its life is great.

  Finally, this sockliner can be washed in a machine without more precaution than a synthetic fabric, avoiding exceeding the temperature of 500 C. In fact, until this temperature, the leather fibers contained in the sole retain their

mechanical properties.

  Finally, the small volume of the first according to the inventiot iti allows C '; to fit to tuts the sluts without diminishing

the footwear volume.

  On the other hand, the shape of the first was

  studied to match all the varieties of the first montage.

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Claims (2)

  1 Absorbent complex especially for the   manufacture of socks for footwear, in particular   terized in that it consists of a compound of two superimposed   posed of which that of above (1) acts as moisture diffuser and that of below (2) the role of moisture reservoir, the first material being formed partly of defibrillated leather fibers and partly of synthetic fibers, these different fibers being bonded together by the addition of a resinous binder, and the second material being, for its part, formed of an absorbent felt with high retention capacity, the two materials being assembled over their entire surface by a sticking   punctual (3) and a peripheral seam (4).   2 Complex according to claim 1, characterized in that it is impregnated with a deodorant with a long life, this deodorant being trapped by the diffuser material (1) and   trapped in the reservoir material (2).