JP3177971U - Leak-proof material for disposable diapers - Google Patents

Abstract

Disclosed is a leak-proof material for disposable diapers (paper diapers) that can be used more conveniently, has a lower cost, is suitable for mass production, and is easier on the skin.
The leak-proof material includes a leak-proof film layer 1 disposed on the top layer and a nonwoven fabric layer 2 disposed on the bottom layer, and the leak-proof film layer 1 is partially or entirely on the surface of the nonwoven fabric layer 2. The at least 1 through-hole area 21 is installed in the nonwoven fabric layer 2, and the through-hole area 21 is arrange | positioned at equal intervals in the nonwoven fabric layer 2, and is formed from the several through-hole 211 which penetrates.
[Selection] Figure 3

Description

  The present invention relates to a leak-proof material for disposable diapers such as paper diapers.

  A diaper is a cloth used to absorb urine by covering the lower body of an infant or lying on a crib. The diaper that has been with an infant since the baby was born until the urination and defecation can be controlled by his / her own will be the second layer of the infant's skin.

Types of diapers are classified into cloth diapers and paper diapers depending on the material.
Cloth diapers have the following disadvantages: they are cheaper, can be used repeatedly, have good absorbency and adhesion, are less susceptible to sensitive reactions and diaper rashes, and are not convenient for cleaning and carrying on the other side. .
Paper diapers are convenient to carry and do not need to be washed, but infants with allergic skin always need to be replaced and are disposable.

  As economic construction and social civilization progress, child-rearing methods and items are changing over time. In the past, it was rare to use disposable diapers (paper diapers) for infants, but it is still common. The function of disposable diapers has advantages such as practicality and convenience, as well as good mental and physical health and personality development for infants. Therefore, the standard of living has improved with the development of science and technology, and the types of disposable diapers in the market are also increasing.

  Consumers pointed out that conventional paper diapers always feel sticky when touching the skin and are not gentle to the skin. This eliminates discomfort when touching paper diapers and improves the point that they are not easy on the skin. As a result, there has been proposed a leak-proof material as shown in FIG.

  The inventors of the present invention applied the above-described leakage-proof material to complete a “disposable diaper (paper diaper) with an improved engagement structure”, which is disclosed in Patent Document 1. As shown in FIG. 2, this diaper is a leak-proof material formed by combining a plastic film A as a top layer and a nonwoven fabric layer B2 having a rough surface as a bottom layer, and is improved so that a paper diaper is fixed to a user's waist. In addition, the cost or consumables are reduced, the production yield is significantly improved, and the gentleness to the skin of the disposable diaper is improved.

China Utility Model Registration No. M405257 “Disposable Diaper with Improved Engagement Structure (Paper Diaper)” / China National Public Notice M405257 “Equipped with improved urine-contacting paper urine 82”

  However, the leak-proof material of the above-mentioned patent document 1 is gentle to the skin and solves the problems by an improved fixing method. At the same time, the technical innovation and the cost reduction effect have been achieved. However, it is not the best yet, and it has not reached an optimal state in terms of cost, consumables, gentleness to the skin, fixing method, etc., and there is still room for improvement.

In light of these conventional problems, the present inventors return to the roots and take innovative measures to achieve further reductions in costs and consumables, while at the same time being gentler to the skin and better in the fixing method. The idea of developing a leak-proof material for disposable diapers (paper diapers) has led to the proposal of the present invention.
Therefore, the present invention solves the above-mentioned conventional problems, and is made of a leak-proof material for disposable diapers such as paper diapers that can be used more conveniently, is lower in cost, is suitable for mass production, and is easier on the skin. The purpose is to provide.

  In order to solve the above problems and achieve the above object, a leak-proof material for a disposable diaper of the present invention comprises a leak-proof material, and the leak-proof material includes a leak-proof film layer located on the top layer, The non-woven fabric layer located in the bottom layer is bonded to a part or all of the surface, and in the leak-proof material, at least one through-hole area is provided in the non-woven fabric layer, and the through-hole areas are arranged at equal intervals. And it makes it a summary to be formed from the some through-hole which penetrates the said nonwoven fabric layer.

Moreover, it is preferable that this leak-proof material for disposable diapers further comprises the following configuration.
(1) The leak-proof film layer and the nonwoven fabric layer are any of the combinations described below or a combination thereof, and are an elastic layer or a non-elastic layer, and the leak-proof film layer and the nonwoven fabric layer are both Modulus of elasticity is the same or different.
(2) The leak-proof film layer is any of those described below that can be distinguished by air permeability, and is a breathable leak-proof film or a non-breathable leak-proof film.
(3) The leak-proof film layer is any of the following, and is made of a polypropylene (PP / Polypropylene) film, a polyethylene (PE / Polyethylene) film, a polyurethane (PU / Polyurethane) film, or a biodegradable plastic. A film of a plastic composite material by a film or a copolymer.
(4) The through-hole areas are arranged at regular intervals, or are arranged at irregular intervals, or the whole surface is covered, or a part of the surface is covered, or the surface central part of the nonwoven fabric layer is covered, Or any of the above, covering a part of the surface central portion of the nonwoven fabric layer, or arranged at the central surface portion of the nonwoven fabric layer at equal intervals, or arranged at the central surface portion of the nonwoven fabric layer at unequal intervals It arrange | positions at the said nonwoven fabric layer so that it may exhibit the form of.
(5) The through-hole area is an illustration shape, a character shape, a rectangular parallelepiped shape, a rectangular parallelepiped shape, a floral pattern shape, a dot shape, a lattice shape, a regular stripe shape, or an irregular stripe shape, It arrange | positions so that any of the above-mentioned patterns (shape, picture pattern) may be exhibited.

According to the leakproof material for a disposable diaper of the present invention, the following effects can be obtained by the above-described configurations.
(1) In the present invention, the surface of the leak-proof material is devised so as to be more uneven with the through-hole area of the nonwoven fabric layer, so the contact area touching the skin is reduced and the three-dimensional space is increased. The volume of the solid space in between increases. Thereby, the contact feeling to a wearer's skin becomes favorable and the effect which distribute | circulates air by radiating sweat is acquired. Therefore, when a consumer touches a paper diaper made of the leak-proof material of the present invention, the discomfort can be reduced, so that the touch is comfortable and gentle to the skin as if touching a cloth diaper such as a fabric or a cotton diaper. The effect of eliminating the sticky feeling of touching a typical plastic material is produced.
(2) In the present invention, since the through-hole area is formed by arranging a plurality of through-holes in the nonwoven fabric layer, it is possible to reduce the manufacturing cost of the leak-proof material and optimize the manufacturing process. It is. This is because products formed from through-holes can be manufactured in the future without using loop surface materials (Loop) in use, which leads to a reduction in overall costs or consumption of earth resources. Reaches energy saving and eco-friendly.
(3) In the present invention, since the nonwoven fabric layer in the present invention becomes more three-dimensional because the surface of the leak-proof material is more uneven by the through-holes in the nonwoven fabric layer, the hook surface (generally called : The effect of matching with Hook / waist sticking part is better. As a result, it is more adhesive than the leak-proof material described in the above-mentioned Patent Document 1 without using a conventional loop surface (general name: Look / target area) that matches the hook surface, and is used to match the hook surface. There is convenience.

Cross-sectional view showing a leak-proof material for a conventional disposable diaper (paper diaper) and its main part Sectional drawing which shows the leak-proof material for the disposable diaper (paper diaper) of patent document 1, and its principal part The perspective view which shows the leak-proof material for the disposable diaper (paper diaper) which concerns on 1st Embodiment of this invention. Exploded perspective view showing the configuration of each part of the leak-proof material Sectional view showing the leak-proof material and its main parts Front view of the leak-proof material Sectional view (sectional view of FIG. 6) showing the leak-proof material and its main part The front view which shows the leak-proof material for the disposable diaper (paper diaper) which concerns on 2nd Embodiment of this invention. Sectional view showing the leak-proof material and its main part (cross-sectional view of FIG. 8) The front view which shows the leak-proof material for the disposable diaper (paper diaper) which concerns on 3rd Embodiment of this invention. Sectional drawing which shows the leak-proof material and its main part (sectional view of FIG. 10) The front view which shows the leak-proof material for the disposable diaper (paper diaper) which concerns on 4th Embodiment of this invention. Sectional drawing which shows the leak-proof material and its main part (sectional view of FIG. 12) The front view which shows the leak-proof material for the disposable diaper (paper diaper) which concerns on 5th Embodiment of this invention. Sectional drawing which shows the leak-proof material and its main part (sectional view of FIG. 14) The perspective view which shows the disposable diaper (paper diaper) using the leak-proof material which concerns on 1st Embodiment of this invention. The figure for explaining the function of the disposable diaper (paper diaper) The perspective view which shows the disposable diaper (paper diaper) using the leak-proof material which concerns on 2nd Embodiment of this invention. The figure for explaining the function of the disposable diaper (paper diaper) The perspective view which shows the disposable diaper (paper diaper) using the leak-proof material which concerns on 3rd Embodiment of this invention. The figure for explaining the function of the disposable diaper (paper diaper) The perspective view which shows the disposable diaper (paper diaper) using the leak-proof material which concerns on 4th Embodiment of this invention. The figure for explaining the function of the disposable diaper (paper diaper) The perspective view which shows the disposable diaper (paper diaper) using the leak-proof material which concerns on 5th Embodiment of this invention. The figure for explaining the function of the disposable diaper (paper diaper)

Next, embodiments for carrying out the invention will be described in detail with reference to the drawings.
3 is a perspective view showing a leak-proof material for a disposable diaper (paper diaper) according to the first embodiment of the present invention, FIG. 4 is an exploded perspective view showing the configuration of each part of the leak-proof material, and FIG. 6 is a front view of the leak-proof material and FIG. 7 is a cross-sectional view (cross-sectional view of FIG. 6) showing the leak-proof material and its main part.

As shown in FIGS. 3 to 7, the leak-proof material for disposable diapers (paper diapers) includes a leak-proof material 100.
The leak-proof material 100 includes a leak-proof film layer 1 disposed on the top layer and a nonwoven fabric layer 2 disposed on the bottom layer, and the leak-proof film layer 1 is bonded to the surface of the nonwoven fabric layer 2 partially or entirely. It becomes. In addition, the leak-proof material 100 is provided with at least one through-hole area 21 in the nonwoven fabric layer 2, and the through-hole area 21 is arranged at equal intervals in the nonwoven fabric layer 2 and is formed from a plurality of through-holes 211 that penetrate therethrough. .

  When this leak-proof material is used for a paper diaper and an infant wears this diaper, the through-hole area 21 is provided in the outermost layer of the paper diaper, that is, the non-woven fabric layer 2 and the through-hole 211 is arranged, whereby the non-woven fabric layer 2 The shape is uneven so that is more three-dimensional. Since the contact area of the three-dimensional space is reduced when touching the skin, the volume of the three-dimensional space between the material and the skin increases. As a result, the wearer feels good contact with the skin, can feel as if he / she touches a woven fabric, etc., and the effect of air circulation by releasing sweat is obtained. Even when the consumer holds an infant wearing this diaper or when an adult wears it, the touch is better and the gentleness to the whole skin is increased (compared to the conventional one). There is no general sticky feeling as when touching a conventional plastic material, and a comfortable wearing feeling and a soft tactile feeling as it is can be obtained.

  Moreover, by providing the through-hole area 21 (through-hole 211) in the nonwoven fabric layer 2, in addition to the effect of improving the tactile sensation described above, the mutual holding force between the strength of the nonwoven fabric layer 2 and the leak-proof film layer 1 (Holding Power) is further increased. Further, by taking this structure, the appearance aesthetics is improved, and the bonding area is increased by increasing the contact area between the nonwoven fabric layer 2 and the hook surface through this process. This is because the nonwoven fabric layer 2 having the through-hole 211 is structurally substantially the same as the hook-loop fixing component, so that the reuse rate can be increased and it is not necessary to use the hook-loop fixing component.

  If it says further about providing a plurality of penetration holes 211 in nonwoven fabric layer 2, since it is generally only a hole made with a needle in a production process, when adjusting the number and indication method of penetration holes 211, the installation method of a needle is changed. Just enough. Therefore, the resource consumed in the production process means that when mass-producing disposable diapers, there is no need to use a material with a conventional loop surface (Loop). It leads to improvement, reduction of production material costs, improvement of production yield, overall cost reduction, reduction of global resource consumption, and in a sense energy saving and eco-friendly, and the effect is remarkable.

  Infants also have a need to change disposable diapers because their bladder function is not fully developed and they cannot tolerate urination for a long time. For example, generally once every 30 minutes or four times a day, from 6 to 7 times a day, gradually from 4 to a day as the baby grows Although it changes, the amount of disposable diapers used is very large. Therefore, when using a paper diaper having the leak-proof material 100, in addition to its functional convenience, the production cost can be kept lower and the price of the product can be reduced, leading to a reduction in the burden on consumers. The effect is that the consumer's willingness to use can be stimulated.

In this leak-proof material 100, the leak-proof film layer 1 and the nonwoven fabric layer 2 are made of an elastic layer or an inelastic layer or a combination thereof, and the leak-proof film layer 1 and the nonwoven fabric layer 2 have the same or different coefficients of elasticity. Or a combination thereof.
By doing so, in addition to reducing discomfort when the infant wears, it is possible to obtain an effect that the infant fits snugly and does not hinder the movement of the infant.
As another advantage, the most important thing is that sufficient adhesion can be obtained, so it is possible to avoid problems such as misalignment and dropping of disposable diapers while the infant or adult is active, and to move the body freely. Even fits the body. As a result, the functionality of the disposable diaper is improved, and in addition to reaching an effect that does not differ from expectations, the stimulation to the skin when worn can be greatly reduced.

Moreover, the leak-proof film layer 1 is a breathable leak-proof film or a non-breathable leak-proof film, and there is a distinction between the presence or absence of breathability.
The selection of whether the leak-proof film layer 1 is a breathable leak-proof film or a non-breathable leak-proof film is determined by the characteristics of the paper diaper.
When a breathable leakproof film is used, the breathability of the diaper can be increased, so that it is lighter and more breathable than before. Therefore, consumers can reduce the incidence of diaper rash and hypersensitivity by selecting the most suitable disposable diaper according to the skin quality of infants and summer climate.
When a non-breathable leak-proof film is used, it is possible to provide optimum waterproof performance and further reduce the possibility of urine leakage.

The leak-proof film layer 1 is either a polypropylene film, a polyethylene film, a polyurethane film, a film made of biodegradable plastic, or a film of a plastic composite material made of a copolymer.
The choice of leak-proof film layer 1 depends on the properties of the paper diaper, while the choice of material lamination depends on the demand in the application of the paper diaper.

8, 10, 12, and 14 are front views showing a leak-proof material for disposable diapers (paper diapers) according to second, third, fourth, and fifth embodiments of the present invention, and FIGS. 9 and 11. FIGS. 13 and 15 are cross-sectional views showing enlarged main parts of the diaper of FIGS. 8, 10, 12 and 14, respectively.
As shown in these drawings, the through-hole area 21 is formed in the non-woven fabric layer 2 so as to cover the entire surface or a part of the surface so as to cover the entire surface or a part of the surface. 2 so as to cover a part of the surface center part or the surface center part of the surface of the nonwoven fabric layer 2 and to be arranged in an equidistant arrangement or an unequal arrangement in the surface center part of the nonwoven fabric layer 2, The nonwoven fabric layer 2 is disposed.
By changing the arrangement position of the through-hole area 21 in this way, when the leak-proof material 100 is applied to a paper diaper, it is possible to provide a variety of options to consumers, and to cope with different types of paper diapers. It is possible to apply. For example, it is possible to effectively cope with adult paper diapers or infant paper diapers with the leak-proof material 100.
Further, the through-hole area 21 has an illustration shape, a character shape, a rectangular parallelepiped shape, a rectangular parallelepiped shape, a floral pattern shape, a dot shape, a lattice shape, a regular stripe shape, an irregular stripe shape, It arrange | positions so that one of these patterns (a shape, a design pattern) may be exhibited.
Thus, by using the through-hole areas 21 having different patterns, the aesthetics can be improved, the choices of consumers can be diversified, and can be applied to different paper diapers. Is more elaborate.

16 and 17 are perspective views showing a disposable diaper (paper diaper) using the leak-proof material according to the first embodiment of the present invention, and FIGS. 18 and 19 are related to the second embodiment of the present invention. A perspective view showing a disposable diaper (paper diaper) using a leak-proof material, FIG. 20 and FIG. 21 are perspective views showing a disposable diaper (paper diaper) using a leak-proof material according to the third embodiment of the present invention. 22 and 23 are perspective views showing disposable diapers (paper diapers) using the leak-proof material according to the fourth embodiment of the present invention, and FIGS. 24 and 25 are leak-proof materials according to the fifth embodiment of the present invention. It is a perspective view which shows the disposable diaper (paper diaper) using the.
By applying the leak-proof material 100 to the disposable diaper 300 as in the first to fifth embodiments shown in these drawings, the overall cost can be reduced or consumption of earth resources can be reduced. Excellent convenience at the time. In addition, since there is no worry of sticking to the skin of infants, it can be repeatedly applied, so that consumers can easily inspect. In addition, even if it attaches to a moisturizing cream or water, it can function to stick and fix these by combining the leak-proof material 100 and the loop surface 400.
Moreover, when the consumer touches the surface of the leak-proof material 100 due to the through-hole area 21 of the leak-proof material 100, the discomfort is greatly reduced, as if touching a cloth diaper or a cotton diaper. It has the effect that it is comfortable to touch and gentle to the skin.

Also, by combining the leak-proof material 100 and the loop surface 400, it is much more convenient to use than conventional paper diapers, but since the use of conventional paper diapers has a long history, it can be used more conveniently by consumers. In order to continue the usage habits, the present invention can increase the number of designs designed with color patterns, trademark designs, or abundant color schemes on the surface, and also print the design of the target area 500 on the leak-proof material 100 in advance. Thus, the original area replaced with the loop surface 400 can be replaced.
Of course, it is not necessary to print the above-mentioned various designs in consideration of the overall demand and cost, but the effect of marking the target area 500 can also be achieved by applying the through-hole area 21.
By setting the target area 500, it is possible to create design designs in order to continue consumer usage habits. In addition, since the loop surface is not installed by consumers, It is possible to avoid misinterpreting a paper diaper to which the leak-proof material 100 is applied as a defective product.

  As described above, as apparent from the respective embodiments, in the present invention, the leakproof film layer 1 and the nonwoven fabric layer 2 are combined, and further, the application of the through-hole area 21 is added to the conventional paper diaper or described in Patent Document 1. Compared with disposable diapers, it has lower costs, higher production yields, and resource savings, so it can be used more easily by consumers and the present invention is more applicable, practical, and effective for manufacturers. , Has industrial applicability.

  Each of the above embodiments is used to explain the structure, features, and effects of the present invention, and satisfies the requirements of novelty and inventive step. In the above description, only the preferred embodiments of the present invention have been disclosed, so that the scope of claims for utility model registration of the present invention is not limited and departs from the spirit of the present invention. Various modifications and the same replacements are all included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Leak-proof film layer 2 Nonwoven fabric layer 21 Through-hole area 211 Through-hole 100 Leak-proof material 200 Skin 300 Disposable diaper (paper diaper)
400 Hook surface 500 Target area A Plastic layer B1 Nonwoven fabric layer B2 Nonwoven fabric layer having a rough surface

Claims (6)

A leak-proof film layer disposed on the top layer, and a nonwoven fabric layer disposed on the bottom layer, wherein the leak-proof film layer is partially or fully bonded to the surface of the nonwoven fabric layer,
At least one through-hole area is installed in the non-woven fabric layer, and the through-hole area is arranged at equal intervals in the non-woven fabric layer and is formed from a plurality of through-holes penetrating.
Leak-proof material for disposable diapers characterized by that.   The leak-proof film layer and the nonwoven fabric layer are elastic layers or non-elastic layers or a combination thereof, and the leak-proof film layer and the nonwoven fabric layer have the same or different coefficients of elasticity. Item 1. A leak-proof material for disposable diapers according to item 1.   The leak-proof material for disposable diapers according to claim 1, wherein the leak-proof film layer is either a breathable leak-proof film or a non-breathable leak-proof film.   The disposable film layer according to claim 1, wherein the leak-proof film layer is any one of a polypropylene film, a polyethylene film, a polyurethane film, a film made of a biodegradable plastic, or a film of a plastic composite material using a copolymer. Leak-proof material for diapers.   In the nonwoven fabric layer, the through-hole area covers the entire surface or a part of the surface in an equally spaced array or an unevenly spaced array, or a surface central portion or a surface central portion of the nonwoven fabric layer. It is arranged in the nonwoven fabric layer so as to cover any part, or to exhibit any form of an equidistant arrangement or an unequal spacing arrangement in the surface central part of the nonwoven fabric layer. Item 1. A leak-proof material for disposable diapers according to item 1.   The through-hole area is either an illustration, a character, a cuboid, a tetragon, a flower pattern, a dot, a lattice, a regular stripe, or an irregular stripe The leakproof material for a disposable diaper according to claim 1, wherein the leakproof material is arranged so as to exhibit a pattern.

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