JP2004154326A - Liquid absorbing pad - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid absorbing pad capable of always affording a good touch feeling, a dry touch feeling and a dry feeling. <P>SOLUTION: The liquid absorbing pad 1 is constituting a diaper A (or B) is applied to a wearer so as to cover the crotch and hip parts of the wearer. The almost liquid excretion discharged by the wearer and the liquid W such as moisture contained in the excretion are repelled by the water repelling layers 2d and 3d of the upper and intermediate layer parts 2 and 3 of the liquid absorbing pad 1 and the repelled liquid W is passed through the pore parts 2a and 3a of the upper and intermediate layer parts 2 and 3 to be sucked and held by the absorbing layer 3e of the intermediate layer part 3. The liquid W absorbed by the absorbing layer 3e is repelled by the water repelling layers 2d and 3d of the upper and intermediate layer parts 2 and 3 to positively prohibit and prevent the bleeding of the liquid W absorbed by the absorbing layer 3e to the surface of the upper layer 2 and the surface of the upper layer 2 being in contact with the skin of the wearer is always held to a dry state. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a diaper for children and adults, a nursing care diaper, a bedding sheet and cover, underwear, and the like for absorbing and preventing excretion discharged from the human body such as urine, feces, menstrual blood, and sweat. The present invention relates to a liquid absorbing pad used for sportswear and the like.
[0002]
[Prior art]
Conventionally, the above-mentioned liquid absorbing pad includes, for example, a back layer on which a spun yarn having micropores is disposed and an intermediate layer on which a false twisted yarn composed of fibers of 0.3 denier or less is disposed, and a non-hydrophilic layer of 1 denier or more. A patent comprising a highly water-absorbent fabric of Patent Document 1 composed of a surface layer provided with false twisted yarns, a water-permeable bag enclosing a water-absorbent polymer, and a water-repellent storage bag covering the water-permeable bag. There is a cooling mat for pets described in Document 2.
[0003]
[Patent Document 1]
Japanese Patent No. 3086091.
[0004]
[Patent Document 2]
JP-A-11-32606.
[0005]
[Problems to be solved by the invention]
However, the highly water-absorbent fabric of Patent Document 1 described above absorbs water discharged from the human body by the water absorbing action of the back layer and absorbs and retains water inside the intermediate layer. In many cases, the front side is always moist with moisture, and the water absorbed in the intermediate layer easily oozes out to the entire back side of the back side which is in contact with human skin, so that the feeling of touch is poor and a dry feeling cannot be obtained.
[0006]
In addition, the cooling mat for pets disclosed in Patent Literature 2 absorbs heat from the pet when the liquid exuding from the water-absorbing polymer is released into the atmosphere through the water-permeable bag and the liquid evaporates. The surface side of the bag is often moist at all times, and a moist feeling is given to human skin, so that the touch feeling is poor. In addition, since the storage bag has a function of preventing water leakage and leakage of liquid to such an extent that the liquid gradually seeps, the liquid has a weak absorbing power, and a substantially liquid discharge discharged from the human body and the discharge thereof Not suitable for use in absorbing liquids such as moisture contained in objects.
[0007]
In view of the above problem, the present invention absorbed liquid entering through the holes in the upper layer and the middle layer in the middle layer, and was absorbed by the middle layer on the surface side of the upper layer and the middle layer having water repellency. An object of the present invention is to provide a liquid-absorbing pad in which a liquid absorbed in the middle layer does not seep to the surface of the upper layer by repelling the liquid, and a dry touch and a dry feeling are always obtained.
[0008]
[Means for Solving the Problems]
According to the present invention, a middle layer for absorbing a liquid is accommodated between opposing surfaces of an upper layer and a lower layer, and a plurality of holes through which the liquid is allowed are formed on the surface side of the upper layer and the middle layer. A liquid absorption pad having water repellency on the surface side of the upper layer portion and the middle layer portion excluding the hole portion, and integrally fixed while the upper layer portion, the middle layer portion, and the lower layer portion are overlapped. And
[0009]
The above-mentioned liquid can be composed of, for example, a substantially liquid discharge discharged from the human body such as urine, feces, menstrual blood, sweat, and the like, and water contained in the discharge. In addition, the upper layer and the middle layer, the lower layer is, for example, cotton or hemp, wool, natural fibers such as silk, polyester or acrylic, a material having a single or composite water absorption such as chemical fibers such as tetron, the material and It can be constituted by a material having a water-repellent function of water-repelling a liquid, such as a cloth, a nonwoven fabric, a sheet, or a cotton-like entangled body, and a vaporizing function of discharging a vaporized liquid. Further, the upper layer, the middle layer, and the lower layer can be knitted by a knitting method having a water-repellent function and a transpiration function such as knit knitting, tricot knitting, and raschel knitting.
[0010]
The holes in the upper layer and the middle layer are formed by punching out one or a plurality of fabrics, extracting warp and weft at predetermined intervals, or increasing the interval between the warp and weft constituting the fabric. Can be formed. Further, for example, it may be formed of a coarse cloth, a nonwoven fabric having holes, a mesh sheet, a porous sheet, a cover, and the like. Further, the water-repellent layers of the upper layer portion and the middle layer portion may be formed by, for example, increasing the distance between the warp and the weft, forming the fibers and yarns having water repellency, or forming the fibers and yarns having water repellency, Can be constructed by implanting hair, applying a water repellent, or knitting having a water repellent function.
[0011]
In addition, the lower layer portion can be made of a material having water repellency, air permeability, water absorption, and waterproofness, such as a fabric, a nonwoven fabric, a sheet, and a pile. Further, the upper layer portion, the middle layer portion, and the lower layer portion can be fixed by fixing means such as suturing, bonding, hooks, hook-and-loop fasteners, adhesive tapes, magnets, and fasteners.
[0012]
That is, for example, a substantially liquid discharge discharged from the human body and a liquid such as water contained in the discharge are repelled on the surface side of the water-repellent upper layer and the middle layer constituting the liquid absorption pad. The water-repellent liquid is made to enter through the holes in the upper layer and the middle layer, and is absorbed and retained by the middle layer. In addition, the liquid absorbed in the middle layer is made water-repellent on the water-repellent upper layer and the surface of the middle layer, and the liquid absorbed in the middle layer is actively oozed to the surface of the upper layer. And always keep the surface side of the upper layer dry.
[0013]
As an embodiment, the hole can be formed by punching out the upper layer and the middle layer in the thickness direction. In addition, the holes can be formed by extracting an arbitrary number of yarns constituting the upper layer portion and the middle layer portion. Further, the holes can be formed by changing the interval between the yarns constituting the upper layer portion and the middle layer portion to an arbitrary interval (for example, a wide interval and a narrow interval). Further, the upper layer portion can be made of a material having water repellency. In addition, the middle layer may be configured by overlapping a water-repellent layer for repelling the liquid and an absorbing layer for absorbing the liquid.
[0014]
[Action and effect]
According to the present invention, the liquid entering the upper layer and the hole of the middle layer constituting the liquid absorbing pad is absorbed by the middle layer, and the middle layer is water-repellent on the surface side of the upper layer and the middle layer. The liquid absorbed in the middle layer part is actively prevented and prevented from oozing out to the surface side of the upper layer part, so that the liquid does not remain on the surface side of the upper layer part. The liquid does not seep into the surface of the upper layer, and the middle layer, which has absorbed the liquid, does not directly touch the human skin, and mutual contact is avoided, so that it is comfortable to touch and has a dry touch and dry feeling. Always available.
[0015]
【Example】
An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawings show a liquid absorbing pad used as a diaper for nursing the elderly. In FIGS. 1 and 2, the liquid absorbing pad 1 has water repellency and water permeability that come into contact with human skin of a wearer (for example, an elderly person). An upper layer portion 2 having an upper layer portion 2, a middle layer portion 3 for absorbing and retaining the liquid W passing through the upper layer portion 2, and a lower layer portion 4 for preventing the liquid W absorbed by the middle layer portion 3 from leaking outside. The middle section 3 is accommodated in a bag-shaped accommodation section 5 formed between the opposing faces of the upper section 2 and the lower layer 4, and the opposing faces of the upper section 2, the middle layer 3, and the lower layer 4 are integrally formed. The suture is fixed.
[0016]
In addition, the diaper A is provided on the mounting-side central surface (or the entire mounting surface) of the diaper A that comes into contact with the wearer's crotch and buttocks, and is formed in a size and shape that covers the crotch and buttocks. It should be noted that the upper layer portion 2, the middle layer portion 3, and the lower layer portion 4 may be stitched and fixed so as not to be displaced, or the entire diaper A may be constituted by the liquid absorbing pad 1.
[0017]
As shown in FIG. 3, the upper layer 2 is made of a fabric made of fibers and yarns such as polyester and acrylic, and has holes 2a through which the liquid W can pass. Are formed at predetermined intervals in the surface direction with respect to the surface side of the upper layer portion 2 which is in contact with the upper layer portion 2, and the remaining surface side excluding the holes 2a is made denser, for example, between the warp yarn 2b and the weft yarn 2c. A water-repellent material which is made of water-repellent fibers and yarns, has a large number of hairs planted, or is subjected to a water-repellent treatment and a water-repellent treatment by applying a water-repellent agent, etc. A water-repellent layer 2d having a function and a vaporizing function of passing and discharging the vaporized liquid W is formed on substantially the entire surface of the upper layer 2 except for the holes 2a. In addition, the upper layer portion 2 may be made of, for example, one of natural fibers and chemical fibers or a mixed yarn, or may be knitted by a knitting method having a water-repellent function and a transpiration function.
[0018]
The above-described middle layer 3 is formed in substantially the same manner as the above-described upper layer 2 by forming holes 3a, through which the liquid W can pass, on the front side of the middle layer 3 facing the back surface of the upper layer 2, that is, the middle layer. A plurality of the water-repellent layers 3d and the absorption layers 3e, 3e constituting the plurality 3 are formed at predetermined intervals in the surface direction at a predetermined interval, and are formed so as to communicate with the water-repellent layers 3d and the absorption layers 3e, 3e in the thickness direction. are doing. The water-repellent layer 3d is formed only on the surface side of the upper absorption layer 3e, but may be formed on the surface side of the upper absorption layer 3e.
[0019]
In addition, on the surface side of the water-repellent layer 3d excluding the holes 3a, the space between the warp yarns 3b and the weft yarns 3c made of chemical fibers such as polyester or acrylic is increased or the water-repellent warp yarns 3b and the weft yarns 3c A water-repellent function of repelling the liquid W by applying a water-repellent process and a water-repellent treatment, such as being composed of chemical fibers, implanting a large number of hairs, or applying a water-repellent agent, and a vaporized liquid A water-repellent layer 3d having a function of transpiring and releasing W is integrally formed on substantially the entire surface of the middle layer 3 (or the absorbing layer 3e) except for the holes 3a. That is, the water-repellent layer 3d in which the holes 3a are formed is integrally fixed or knitted and fixed while being superposed on the upper surface side of the absorption layer 3e. Further, the water-repellent layer 3d may be formed by applying, for example, a water-repellent agent to substantially the entire surface of the middle layer 3 excluding the holes 3a.
[0020]
The above-mentioned absorption layer 3e is made of, for example, a cloth made of a water-absorbing fiber material and yarn in which cotton and polyester are mixed at a predetermined ratio, and the mixing ratio of the fiber material and yarn constituting the absorption layer 3e is, for example, Cotton = about 65%, polyester = about 35%. Further, the water-repellent layer 3d may be knitted by a knitting method having a water-repellent function and a transpiration function.
[0021]
In addition, the size and shape of the middle part 3 formed by overlapping the water-repellent layer 3d and the absorbing layer 3e with respect to the bag-shaped containing part 5 formed between the opposing surfaces of the upper part 2 and the lower part 4 In order to provide an appropriate cushioning property, two absorbent layers 3e of substantially the same size are superimposed in the thickness direction, or the absorbent layer 3e having the size of two sheets is folded in two. It is folded and stored in the bag-shaped storage section 5. Further, the number of superposed absorbent layers 3e may be changed to one or two or more.
[0022]
The mixing ratio of cotton may be changed to, for example, approximately 65% or less and approximately 65% or more, and the mixing ratio of polyester may be changed to, for example, approximately 35% or less and approximately 35% or more. In addition, single and composite fiber materials of other natural fibers and chemical fibers may be used instead of cotton and polyester, and the present invention is not limited to the mixing ratios and fiber materials of the examples.
[0023]
When the above-mentioned holes 2a and 3a are formed, for example, as shown in FIG. 4, one or a plurality of upper layers 2 and middle layers 3 are punched out in the thickness direction, or as shown in FIG. The warp yarns 2b, 3b and the weft yarns 2c, 3c constituting the upper layer portion 2 and the middle layer portion 3 are removed at predetermined intervals at a predetermined interval, or the warp yarns 2b, 3b and the weft yarns 2c, 3c are spaced at an arbitrary interval (for example, a wide interval and a narrow interval). It is formed by changing the distance or the like.
[0024]
Further, in the embodiment, some of the holes 2a and the holes 3a are arranged at positions substantially communicating with each other. However, for example, the number of the holes 3a is set to be smaller than the number of the holes 2a, or The portions 3a may be arranged at different positions, etc., so that the absorption layer 3e of the middle layer portion 3 can be prevented from being exposed to the holes 2a of the upper layer portion 2 and the exposed area can be reduced. Further, the substantially round holes 2a and 3a may be formed to have substantially the same hole diameter or different hole diameters, or may be formed to have an arbitrary shape such as a substantially square, substantially triangular, or substantially elliptical shape.
[0025]
The lower layer 4 is made of, for example, a fabric made of fibers and yarns of cotton, which is a natural fiber, of about 100%, and the front and back sides of the lower layer 4 are made of, for example, water-repellent fibers and yarns. Water, water-repellent treatment and water-repellent treatment by applying a water-repellent agent, etc., to repel the liquid W absorbed by the middle layer 3. It has a water-repellent function for water and a vaporizing function for passing and discharging the vaporized liquid W.
[0026]
Further, the lower layer portion 4 may be knitted by, for example, a knitting method suitable for preventing passage and penetration of the liquid W absorbed by the middle layer portion 3 and preventing leakage of the liquid W to the outside. Further, the lower layer portion 4 may be made of, for example, a cloth made of a fiber and a yarn in which chemical fibers alone, natural fibers and chemical fibers are mixed at a predetermined ratio, or the entire lower layer portion 4 and the front side and the back side may be made of synthetic rubber, for example. It may be formed of a material having water repellency and waterproofness, such as a soft resin or a soft resin.
[0027]
The illustrated embodiment is configured as described above, and a use example in which the liquid absorbing pad 1 is used as the diaper A will be described below.
[0028]
First, at the time of wearing, the upper layer 2 of the liquid absorbing pad 1 constituting the diaper A is brought into contact with the human skin of the wearer, and the diaper A is worn so that the crotch and buttocks of the wearer are covered.
[0029]
Next, when excrement (eg, urine or feces) of the wearer is excreted into the diaper A, as shown in FIG. 3, a substantially liquid excretion and a liquid W such as water contained in the excretion are discharged. Is water-repelled by the water-repellent layer 2d of the upper layer part 2, and the water-repelled liquid W passes through the holes 2a of the upper layer part 2 and penetrates and penetrates into the bag-shaped accommodation part 5.
[0030]
The liquid W that has passed through the holes 2a of the upper layer 2 is repelled by the water-repellent layer 3d of the middle section 3 housed in the bag-shaped storage section 5, and the water-repellent liquid W is discharged to the middle layer. 3 penetrates and penetrates into the absorption layer 3e through the holes 3a, and is absorbed and retained by the absorption layer 3e having a two-layer structure.
[0031]
In addition, the liquid W absorbed by the absorption layer 3e of the middle part 3 is repelled by the water-repellent layer 2d of the upper part 2 and the water-repellent layer 3d of the middle part 3, and is absorbed by the absorption layer 3e of the middle part 3. The liquid W is prevented and prevented from seeping out to the surface side of the upper layer portion 2, and the surface side of the upper layer portion 2 is always kept in a dry state.
[0032]
In addition, when the liquid absorbing power of the liquid absorbing pad 1 is reduced, the liquid absorbing pad 1 is absorbed by the middle layer part 3 by, for example, applying the liquid absorbing pad 1 to the sun, drying it in the shade, or drying it with a dryer. While evaporating and evaporating the liquid W, the vaporized liquid W is passed through the holes 2a of the upper layer 2 and the holes 3a of the middle layer 3 to repel the water repellent layer 2d of the upper layer 2 and the middle layer 3. The water layer 3d is released into the atmosphere using the transpiration property, and the absorption layer 3e of the middle layer 3 is restored to the state before absorption in a short time.
[0033]
As described above, the substantially liquid discharge excreted by the wearer and the liquid W such as moisture contained in the discharge are transferred to the water-repellent layers 2d, 3d of the upper layer 2 and the middle layer 3 constituting the liquid absorption pad 1. The liquid W thus repelled passes through the holes 2a, 3a of the upper layer 2 and the middle layer 3, and is absorbed and retained by the absorbing layer 3e of the middle layer 3. Further, the liquid W absorbed by the absorption layer 3e is repelled by the water-repellent layers 2d, 3d of the upper layer 2 and the middle layer 3, so that the liquid W absorbed by the absorption layer 3e is on the surface side of the upper layer 2. The liquid W does not remain on the surface side of the upper layer 2 because the liquid W is positively prevented and prevented from oozing out. Since the absorbing layer 3e does not directly touch the human skin and avoids mutual contact, the touch feeling is good, and the dry touch feeling and dry feeling can always be obtained.
[0034]
In addition, the liquid W absorbed in the absorption layer 3e of the middle layer 3 is evaporated and vaporized, and the vaporized liquid W is passed through the holes 2a of the upper layer 2 and the holes 3a of the middle layer 3, and Since the liquid W is released into the atmosphere using the transpiration of the part 2 and the middle part 3, the transpiration efficiency of the liquid W is good, and the liquid absorbing power of the liquid absorbing pad 1 can be restored to the state before absorption in a short time. , Can be used any number of times.
[0035]
In addition, since the upper layer portion 2, the middle layer portion 3, and the lower layer portion 4 are made of a commercially available fiber material and cloth having water absorbency, the price of the water absorbent material is lower than that of a conventional example using a water absorbent polymer. The liquid absorbing pad can be manufactured easily and inexpensively.
[0036]
FIG. 6 shows another example of the one-layer liquid absorbing pad 1 in which the one-layer absorbing layer 3e constituting the middle layer portion 3 is formed to have a thickness suitable for absorbing and retaining a predetermined amount of liquid W. The liquid W that has passed through the holes 2a of the upper layer 2 and the holes 3a of the middle layer 3 is absorbed and retained by one absorption layer 3e constituting the middle layer 3, which is substantially the same as the above-described embodiment. The same operation and effect can be obtained.
[0037]
FIG. 7 shows another example of the use of the liquid absorbing pad 1 used for the diaper B, and the liquid absorbing pad 1 is provided on the mounting side central surface (or the entire mounting surface) of the diaper B facing the crotch and buttocks of the baby. The diaper B is worn so that the crotch and buttocks of the infant are covered. A substantially liquid discharge excreted by an infant and a liquid W such as moisture contained in the discharge are repelled by the water-repellent layer 2d of the upper layer 2 and the repelled liquid W is passed through the hole of the upper layer 2. 2a... Penetrates and penetrates into the bag-shaped storage portion 5 and the liquid W that has passed through the holes 2a... Of the upper layer 2 and the holes 3a. Absorbs and retains water, so that substantially the same operation and effect as those of the above-described embodiment can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a usage example using a liquid absorption pad as a diaper.
FIG. 2 is a developed perspective view showing a laminated structure of a liquid absorbing pad.
FIG. 3 is a vertical cross-sectional view showing an example in which an absorption layer in a middle layer portion has two layers.
FIG. 4 is an enlarged plan view showing an example in which holes are punched out of an upper layer portion and a middle layer portion.
FIG. 5 is an enlarged plan view showing another example in which a hole is formed by extracting a thread.
FIG. 6 is a longitudinal sectional view showing another example in which the absorption layer in the middle part is formed into one layer.
FIG. 7 is a developed plan view showing another usage example in which the liquid absorbing pad is used for diaper.
[Explanation of symbols]
A ... Diaper B ... Diaper W ... Liquid 1 ... Liquid absorbing pad 2 ... Upper layer 2a, 3a ... Hole 2b, 3b ... Warp 2c, 3c ... Weft 2d, 3d ... Water repellent layer 3 ... Middle layer 3e ... Absorbing layer 4 … Lower part

Claims (6)

The middle layer that absorbs the liquid is accommodated between the opposing surfaces of the upper layer and the lower layer,
A plurality of holes through which the liquid is allowed to pass are formed on the surface side of the upper layer and the middle layer,
While giving water repellency to the surface side of the upper layer part and the middle layer part excluding the hole,
A liquid absorbing pad in which the upper layer, the middle layer, and the lower layer are integrally fixed while overlapping each other. 2. The liquid absorbing pad according to claim 1, wherein the hole is formed by punching the upper layer and the middle layer in a thickness direction. The liquid absorbing pad according to claim 1, wherein the holes are formed by extracting an arbitrary number of yarns constituting the upper layer portion and the middle layer portion. 2. The liquid absorbing pad according to claim 1, wherein the holes are formed by changing the intervals between the yarns constituting the upper layer portion and the middle layer portion to arbitrary intervals. 5. The liquid absorbing pad according to claim 1, wherein the upper layer is made of a material having water repellency. The liquid absorbing pad according to claim 1, 2, 3, or 4, wherein the middle layer is formed by superposing a water repellent layer for repelling the liquid and an absorbing layer for absorbing the liquid.

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