JP4320273B2 - Disposable diapers - Google Patents

Description

The present invention relates to a disposable paper diaper , and more specifically, can prevent water contamination due to side leakage of excrement more reliably, has a color design, looks good, and can be worn with an underwear sensation or a swimsuit sensation. about the disposable diaper that is suitable for the water play.

When an infant wears a swimsuit and plays with water in a pool or the like, the infant may excrete urine or feces. Such excrement leaks out from the leg periphery of the swimsuit or oozes out from the swimsuit itself, resulting in dirty water in the pool. Therefore, in order to prevent water contamination due to the excrement of such infants, when an infant plays with water, the guardian should make the infant wear a disposable paper diaper designed to prevent the excrement from leaking. Is common.

  This disposable paper diaper is somewhat different in shape and configuration depending on the purpose and application, etc., but there is not much difference in the basic configuration, and usually the top sheet disposed on the skin contact surface side and the back surface side The paper diaper main body is formed into a pants shape by a back sheet disposed on the sheet and an absorbent body interposed between the sheets. Some disposable paper diapers have so-called tape-type paper diapers that are fastened to the front and back of the body with fastening tape, but the form in use is no different from conventional underwear pants. In the present invention, the tape type paper diaper is also defined as a pants type.

  Conventionally, in such disposable disposable diapers, various patterns and characters that can be visually recognized from the outside at the time of wearing are displayed on the front body and the back of the disposable diaper for the purpose of displaying the front / rear distinction or size. There is a print on part of the body. In particular, pants-type disposable diapers for infants are known to be printed with patterns and patterns preferred by infants such as animals, vehicles, and characters.

  FIG. 9 is a perspective view of a pants-type disposable paper diaper disclosed in Patent Document 1 as an example. That is, the paper diaper 10 is disposed between the top sheet 11 disposed on the surface side, that is, the skin contact surface side, the back sheet 12 disposed on the outermost layer on the outer surface side, and the sheets. The both ends 14 of the diaper body consisting of the absorbent body 13 are welded to form a front body 10FP and a back body 10BP, thereby forming a pants type. The back sheet 12 on the front body 10FP side has a printed pattern (elephant A design 15 consisting of (face) is printed.

  However, the paper diaper 10 having such a design 15 is manufactured under the condition that it is used indoors, and is not manufactured in consideration of being used in water. For this reason, when an infant wears the paper diaper 10 and enters the water, excrement such as stool and urine of the infant leaks sideways particularly when the paper diaper is a paper diaper having no leakage prevention member such as a three-dimensional gather. There was still a fear that it would flow into the water and pollute the water.

  Further, as described above, since the design 15 to be applied is partial, the design 15 is difficult to see from the outside of the water. In particular, when the design 15 is printed on the inner surface of the backsheet 12, it becomes more difficult to see from the outside due to the opaqueness of the backsheet 12, and the design 15 is not visible on the outer surface of the backsheet 12. When printing is performed, since the printing surface directly touches water, the color of the printing surface gradually fades, or the printing ink gradually falls and the design 15 disappears.

  Furthermore, in the conventional paper diaper 10 described above, since the design 15 is partially applied to the outer surface of the paper diaper 10, the elastic elastic member 16 in the end flap part 10EF or the side flap part 10SF of the paper diaper 10 is conspicuous. The image of wearing a disposable diaper and playing in the water was unsatisfactory and the appearance of the conventional disposable diaper 10 was not obtained.

In addition, a disposable paper diaper having a color design that can be visually recognized from the outside over the entire outer surface of the back sheet and having an underwear sensation has been proposed by the present applicant in Patent Document 2, and this paper diaper is also similar to the paper diaper 10 described above. It was not used in the water, so the color design was not designed to look beautiful in water.
JP 2000-93458 A JP 2003-70838 A

The present invention has been made in view of the above-described circumstances, and the object of the present invention is to more reliably prevent water contamination due to side leakage of excrement, have a color design, and have a good appearance. can be worn with a swimsuit sense, especially infants is to provide a single paper Homme suitable for the water play.

The object of the present invention is to provide at least a top sheet having three-dimensional gathers on both sides and disposed on the skin contact surface side, a back sheet disposed on the outer surface side, and an absorption interposed between the sheets. is the diaper main body by a body forming a color design that is visible from the outside to the outer surface side is given more printing, both side ends of the front body and back body Te welded pants-type diapers smell linear, the color design is at least hand color and pattern in the vicinity of at least the two side portions is asymmetrical, and the linear welding portion in the both end portions is provided so as not to form the boundaries of the color design This is achieved by providing a paper diaper characterized by that.

The above-described object of the present invention, the color design width A of the diaper main body, wherein when the design print surface width B, A> B ≧ 1 / 3A becomes more paths printed with a relationship This is achieved more effectively by providing a disposable diaper characterized by comprising turns .

The above-described object of the present invention, the design of the plurality of patterns by providing a disposable diaper, characterized in that the pattern of the printing surface adjacent are printed by approximate color close to the relative color, more effective To be achieved.

The above-mentioned object of the present invention is achieved more effectively by providing a paper diaper characterized in that the color design is formed by continuously arranging a plurality of evenly arranged single patterns. Is done.

The above-mentioned object of the present invention can be achieved more effectively by providing a paper diaper in which the color design is formed by adding a character pattern to the single pattern .

In addition, the object of the present invention is more effective by providing a paper diaper wherein the color design is also applied to an end flap portion and / or a side flap portion of the diaper body. To be achieved.

Furthermore , the object of the present invention is more effective by providing a paper diaper wherein the color design is such that the area ratio of the colored printing surface to the printing surface is set to 20% or more. Achieved.

According to the disposable paper diaper of the present invention, since the three-dimensional gather is provided in the diaper main body, it is possible to more reliably prevent water pollution due to the side leakage of excrement. In addition, since the colorful design is given to the part that can be seen from the outside of the diaper body, this design can be seen beautifully and clearly even in the water, and underwear even though it is a paper diaper by applying such a design It can be worn with a sense and a swimsuit sensation.

  In addition, when the color design has high transparency and is applied to at least the inner surface of the back sheet disposed in the outermost layer of the diaper body, or the design sheet attached to the inside of such a back sheet If it is applied to the outer surface, and if it is applied to the outer surface of a waterproof film attached to the inside of such a back sheet, the color of the color design may get wet and disappear due to water. This can be prevented.

  In particular, when the surface of the back sheet having transparency and disposed in the outermost layer of the diaper body is a non-woven fabric that has been subjected to a smooth treatment, the above-described effects become even more remarkable.

Further, by changing the color scheme or pattern of the design to various ones, it can be worn as an attractive paper diaper for playing with water .

Furthermore, according to the disposable paper diaper in which the design is also applied to the end flap portion and / or the side flap portion of the diaper body, the image as a paper diaper is eliminated, and the diaper body can be worn with a sense of underwear or a swimsuit. .

Hereinafter, the contents of the present invention will be described by taking disposable disposable diapers for infants as an example. However, the present invention is not necessarily limited to such examples, and various configurations can be made without departing from the scope of the claims. Needless to say, it can be changed.

FIG. 1 is a plan view of a disposable paper diaper main body according to an embodiment of the present invention, as viewed from the skin contact surface side, that is, the surface side. In addition, this paper use diaper 100 consists of the component similar to the conventional disposable paper diaper 10 mentioned above except for a part of structure. For this reason, in the following description, the same reference numerals in the 100s are assigned to corresponding components.

The disposable paper diaper 100 is disposed on the skin contact surface side, and is made of a liquid-permeable top sheet 101 made of a nonwoven fabric and the like, and is disposed on the outer surface side, and is made of a plastic sheet such as polyethylene, a nonwoven fabric, or a combination thereof. a backsheet 102 liquid-impervious, by the absorber 103 interposed between these sheets, similar to the paper diaper main body in the conventional disposable diaper 10, the diaper body planar shape is a hourglass shape is formed . In the disposable paper diaper 100, both side edges lengthwise direction of the absorbent body 103, a standing gather sheet 107 made provided on the surface side of the top sheet 101 nonwoven fabric or the like, is arranged along its inner edge A three-dimensional gather 108 standing on the surface side is formed by a plurality of elastic elastic members 106 made of rubber thread or the like. Further, a side flap portion 100SF not including the absorber 103 is formed by the back sheet 102 portion extending laterally from the side edge of the absorber 103 and the outer sheet portion of the three-dimensional gather sheet 107, and these A plurality of elastic elastic members 106 are disposed along the longitudinal direction of the diaper main body so that a pleated flat gather 100GK is formed on the side flap portion 100SF. Further, the width direction of the front bloom 100FP and guardian around 100BP of this disposable paper om one 100, respectively a plurality of resilient and elastic members 106 are arranged, which by the end flap portion 100EF are formed. In the disposable disposable diaper 100, a liquid-impermeable waterproof film 109 (see FIGS. 7 and 8) made of polyethylene or the like is disposed between the back sheet 102 and the absorbent body 103.

The above as constructed diaper body, is folded in two in the manufacturing process, and both side ends 104 of the front body around 100FP side and rear wear around 100BP side is welded to a linear, shown in perspective view in FIG. 3 Such a pants-type disposable paper diaper 100 is formed. As described above, in the disposable disposable diaper 100, the three-dimensional gather 108 is provided upright in the longitudinal direction on the skin contact surface side. Therefore, even if an infant excretes feces etc. in water, the three-dimensional gather 108 excretes it. Things are prevented from leaking sideways.

In the disposable paper diaper 100, a design 105 that can be seen from the outer surface side, that is, the back sheet 102 side disposed in the outermost layer is printed on the inner surface of the back sheet 102.

Figure 2 is a front view of the design 105, it is viewed from the front only around 100FP side folding the body of the disposable diapers 100 formed in pants-type in two. In the present embodiment, the design 105 is formed by colors composed of four colors of green, red, blue, and orange arranged in an arc shape. The design 105 is printed on the inner surface of the back sheet 102 by a known printing method such as gravure printing or flexographic printing in the manufacturing process of the disposable disposable diaper 100. Incidentally, the design 105 is applied as well on the back side, i.e. the rear body around 100BP side.

Here, the design 105 is given a relationship of A> B ≧ 1 / 3A, where A is the width of the diaper main body and B is the surface width of the design printing as shown. This is, <When set to 1 / 3A, the same color design too finely design printed surface causes complicated enters in the same paper diaper products, on the contrary, B> B is set to A This is because it becomes a monochromatic design printing surface and color variations cannot be obtained.

Note that when the design 105 is formed only with colors as in the present embodiment, it is desirable to print the colors of adjacent print surfaces with approximate colors close to relative colors. With this color arrangement, clear color variations and beauty can be obtained, thereby increasing the commercial value as a disposable paper diaper product.

The material of the back sheet 102 disposed in the outermost layer of the disposable disposable diaper 100 is a thin nonwoven fabric having a high thickness and a high transparency, an olefin resin sheet such as polyethylene or polypropylene, and a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like. Furthermore, a nonwoven fabric sheet or the like that substantially ensures liquid impermeability through a waterproof film is preferably used. In the disposable disposable diaper 100 , a non-transparent nonwoven fabric is used as a material for the back sheet 102 so that the above-described design 105 can be clearly seen from the outside, and at least the inner surface of the nonwoven fabric, that is, the printed surface of the design 105 is Smoothed by calendar processing or the like.
Normally, fine irregularities are formed on the front and back surfaces of the nonwoven fabric due to fuzz and uneven thickness. By smoothing such a surface, especially the surface on which the design 105 is printed, the printing roll smoothly rolls. It is easy to print by moving, so that a beautiful design 105 without fading can be printed. Further, this smoothing treatment improves the light transmittance, thereby increasing the transparency of the nonwoven fabric itself.

According to an experiment conducted by the present inventor conducted on the material of the back sheet 102, that is, the transparency of the nonwoven fabric, three stimuli of green G, red R, and blue B, which are usually used for the back sheet 12 of the conventional paper diaper 10. The value and whiteness W, and the tristimulus values and whiteness W1 of green G1, red R1, and blue B1 of the material used for the back sheet 102 of the disposable disposable diaper 100 described above were measured with a colorimetric color difference meter, The measured values for each color (the measured values indicate that the closer to 100, the higher the transparency), the average value of the number of measurements of 5 times is G = 24.8, R = 24.5, B = In contrast to 29.1, W = 49.7, G1 = 27.0, R1 = 26.7, B1 = 31.7, and W1 = 51.8 for the backsheet 102 material. Looking at this Transparency of the material used for the backsheet 102 of the disposable diaper 100 discarded have been found to have become a 9% higher relative to the backsheet 12 transparency of material used in conventional disposable diapers 10.

FIG. 3 is a perspective view showing a state where the disposable disposable diaper 100 having the design 105 described above is worn and used. As shown in the drawing, the design 105 formed by the four-colored striped pattern of green, red, blue, and orange is applied to the entire area of the back sheet 102 extending from the end flap portion 100EF and the side flap portion 100SF of the diaper body. Therefore, the elastic elastic member 106 in the end flap portion 100EF and the side flap portion 100SF is not conspicuous, looks good, and gives the viewer an image of underwater pants or underwear pants. Can be given.

Since the disposable disposable diaper 100 is configured as described above, even if an infant or the like wears it and enters the water, there is no fear of water pollution due to leakage of excrement, and the design 105 is reflected vividly in the water. Since it looks good and also looks good, it has various advantages that it can be worn as a swimsuit or underwear.

In the above-described embodiment, the design 105 is formed only with colors as shown in FIG. 2, but the design 105 can be changed as follows.

The design 105A in FIG. 4 is formed by a figure such as a heart 105h, a star 105s, and a circle 105c. The design 105B in FIG. 5 is formed by an animal pattern such as a small bird 105b, a puppy 105d, and a pupa 105r. It is. In addition, an appropriate color is assigned to each of a plurality of patterns made up of such figures, pictures, etc., and is used for printing. In this case as well, as described above, the colors of adjacent printing surfaces are relative colors. It is desirable that the colors are close to each other. The above design 105 (105A, 105B) is preferably applied with the relational expression as described above between the paper diaper product width A and the printing surface width B, but is not particularly limited. As shown in FIG. 6, the design 105C is formed by arranging the same rectangular single figure (pattern) composed of the colored portion 105v and the white portion 105w vertically and horizontally (regardless of the paper diaper product width A). Alternatively, a character pattern such as an animal as shown in FIG. 5 may be added to such a single pattern. It is desirable to add such character patterns to disposable disposable diapers for infants.

The above embodiment is a case where the design 105 (105A, 105B, 105C) is printed on the inner surface of the highly transparent backsheet 102 disposed in the outermost layer of the diaper body. It can also be applied to the outer surface. In this case, as described above, there is a risk.

Figure 7 is a sectional view showing a layer structure of a main portion of a disposable paper diaper 100A according to another embodiment of the present invention (the portion corresponding to the X-X portion of the diaper main body shown in FIG. 1). As shown in the figure, this disposable paper diaper 100A includes, in order from the skin contact surface side, a top sheet 101 having a three-dimensional gather 108 on both sides, an absorbent body 103 covered with crepe paper 103c, a waterproof film 109, a design sheet 110, The back sheet 102 is provided.

In the disposable disposable diaper 100A, the above-described design 105 (105A, 105B, 105C) is printed on the outer surface of the design sheet 110, that is, the surface in contact with the back sheet 102. The design sheet 110 is a well-known sheet material in the art, and is used, for example, in an FTT (frontal target tape) provided on the front body of a tape-type paper diaper. Use of such a sheet material dedicated to design printing has an advantage that an arbitrary design can be freely and easily performed in a separate process. When the design 105 (105A, 105B) is applied to the design sheet 110 attached to the inner surface of the back sheet 102 in this way, the design 105 (105A, 105B) is shielded by the liquid-impermeable back sheet 102. The design 105 (105A, 105B, 105C) can be clearly seen even in the water because the backsheet 102 has high transparency. .

FIG. 8 is a cross-sectional view showing the main part of a disposable paper diaper 100B according to still another embodiment of the present invention in the same manner as described above. As shown in the figure, the disposable disposable diaper 100B includes a top sheet 101 having a three-dimensional gather 108 on both sides, an absorbent body 103 covered with crepe paper 103c, a waterproof film 109, and a back sheet 102 in order from the skin contact surface side. It is provided and does not have the design sheet 110 described above.

In the disposable paper diaper 100B, the above-described design 105 (105A, 105B, 105C) is printed on the outer surface of the waterproof film 109, that is, the surface in contact with the back sheet 102. The waterproof film 109 is a known film that is formed of a resin such as polyethylene, for example, and is provided so as to cover the back surface side of the absorber 103. The same effect can be obtained by the present disposable paper diaper 100B.

As described above, in the disposable paper diaper according to the present invention, the design 105 (105A, 105B, 105C) is formed by coloring in any case, but this color design is the area of the colored printing surface relative to the printing surface. The rate is desirably 20% or more. This is because when the area ratio is less than 20%, a swimsuit sensation or underwear sensation cannot be obtained, and the disposable diaper area is not left as in the conventional paper diaper 10.

As described in detail above, the disposable paper diaper according to the present invention has a function as a conventional paper diaper, so it has needless to say that it has commercial value as a paper diaper product. As a disposable paper diaper that can be surely prevented, has a color design, has a good appearance, and can be worn with a sense of underwear or a swimsuit, it fully performs its function.

The disposable paper diaper according to the present invention is not limited to the pants-type disposable swimsuit as described above, and can be used as a disposable paper diaper that is fastened with a fastening tape or worn by fastening a belt.

It is an expansion | deployment top view of the disposable paper diaper concerning one Embodiment of this invention. It is a front view which shows an example of the color design given to a disposable paper diaper . It is a perspective view which shows the state at the time of mounting | wearing of the disposable paper diaper concerning one Embodiment of this invention. It is a front view which shows the example of a change of the color design given to a disposable paper diaper . It is a front view which shows the other example of a color design given to a disposable paper diaper . It is a front view which shows the further another example of a color design given to a disposable paper diaper . It is principal part sectional drawing of the disposable disposable paper diaper concerning other embodiment of this invention. It is principal part sectional drawing of the disposable paper diaper concerning other embodiment of this invention. It is a perspective view of the conventional disposable paper diaper.

Explanation of symbols

10 Conventional disposable diaper 10EF, 100EF End flap 10SF, 100SF Side flap 10FP, 100FP Front body 10BP, 100BP Rear body 11, 101 Top sheet 12, 102 Back sheet 13, 103 Absorber 14, 104 Side end 15, 105, 105A, B, C Design 16, 106 Elastic elastic member 100, 100A, 100B Disposable paper diaper 108 Three-dimensional gather 109 Waterproof film 110 Design sheet according to the present invention

Claims (7)

A diaper body is formed by at least a top sheet having a three-dimensional gather on both sides and disposed on the skin contact surface side, a back sheet disposed on the outer surface side, and an absorbent body interposed between the sheets. is, color design that is visible from the outside to the outer surface side is given by printing, before the body及 of beauty back body both side ends of the linearized welded a pants-type disposable diaper, the color design is at least the two side diapers, characterized in that provided in the power sale by at least one of color and pattern are asymmetrical, and the linear welding portion in the both end portions do not form a boundary of the color design is in parts vicinity. In the color design, the width of the diaper body is A, and the surface width of the design printing is B Characterized by comprising a plurality of patterns printed with a relationship of A> B ≧ 1 / 3A. The paper diaper according to claim 1. The design of the plurality of patterns is printed with an approximate color in which the pattern on the adjacent printing surface is close to a relative color. The disposable diaper according to claim 2, wherein the disposable diaper is printed. The color design consists of a single pattern arranged uniformly and arranged in multiple numbers in succession. The disposable diaper according to any one of claims 1 to 3, wherein the disposable diaper is provided. The color design is made by adding a character pattern to the single pattern. The disposable diaper according to claim 4. The collar design includes an end flap portion and / or a side flap of the diaper main body. 6. The method according to any one of claims 1 to 5, further comprising: Paper diapers. In the color design, the area ratio of the colored printing surface to the printing surface is set to 20% or more. The disposable diaper according to any one of claims 1 to 6, wherein the disposable diaper is provided.

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