Hygiene products

By utilizing a single type of recyclable plastic for the storage, lid, and sanitary units of the sanitary product, the recyclability and environmental impact are improved, addressing the complexity of recycling composite materials.

JP3251782UActive Publication Date: 2025-06-27KNH ENTERPRISE CO LTD
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Patent Information

Application Number
JP2025001305U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Priority Date
2025-01-23
Filing Date
2025-04-24
Publication Date
2025-06-27
Estimated Expiration
2035-04-24

AI Technical Summary

Technical Problem

Existing sanitary products, such as wet tissues, face challenges in recyclability due to composite structures and different materials used for the packaging and the wet tissue body, which complicates recycling and aligns with environmental concerns.

Method used

The sanitary product is designed with a storage unit, lid unit, and sanitary unit, all made from a single type of recyclable plastic, simplifying the recycling process by ensuring all components can be processed together.

Benefits of technology

This design enhances the recyclability of the sanitary product, simplifies recycling classification, and aligns with environmental regulations by using uniform recyclable plastic throughout the product.

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Abstract

Providing a sanitary product that can be recovered more easily. 【Solution means】The sanitary product includes a storage unit 2, a lid unit 3, and a sanitary unit 4. The storage unit 2 includes a storage body 21 made of a single type of recyclable plastic. The storage body 21 is configured to have a storage space and an opening 22 that communicates with the outside. The lid unit 3 includes a lid portion 31 that completely covers the opening 22 and is made of a single type of recyclable plastic, and an adhesive portion 32 that adheres the lid portion 31 and the storage body 21 to each other. The sanitary unit 4 includes a plurality of sanitary members 41 that overlap in the storage space, and each sanitary member 41 has a base layer 411 made of a single type of recyclable plastic.
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Description

Technical Field

[0001] The present invention relates to sanitary products, and particularly to sanitary products for wiping off dirt.

Background Art

[0002] When going out, generally, dirt and liquid are wiped off with a cloth or paper made of natural fibers. However, when it is necessary to wipe with a wet cloth or paper, it is not always possible to find a water source, so there is inconvenience in use. At that time, if there is a sanitary product such as a wet tissue, the problem can be solved, and the convenience of going out is increased. Such a wet tissue is configured by mixing an additive having water retention in natural fibers to hold moisture in the wet tissue body and being able to carry it around to wipe off dirt.

[0003] However, once the packaging material of the wet tissue body is opened, the sealing structure is lost, and since the opening is often designed to be large for convenience of taking out, the moisture of the remaining wet tissues that cannot be used up at once after opening is easily lost.

[0004] In order to improve this, a lid that can be opened and closed may be installed at the opening of the packaging material, but since the volume of the lid is large, there is inconvenience in use.

[0005] In order to improve the drawback, in Patent Document 1, the lid is configured such that the packaging material can repeatedly form a closed space at a position corresponding to the opening in the packaging material, and the volume of the lid is reduced. Further, since the packaging material is made of polymers having different characteristics, the effect of maintaining the wetness of the wet tissue is achieved.

[0006] As described above, Patent Document 1 solved the problem of the lid and the water retention of the wet tissue. However, the packaging material has a composite structure and the constituent materials are also different polymer materials, so it is very inconvenient to recycle. Moreover, the wet tissue body is generally composed of natural fibers and chemical fibers, which are also different from the constituent materials of the packaging material, so it is even more inconvenient to recycle.

[0007] Now that environmental protection awareness is increasing, in order to avoid the adverse effects of plastics on the environment, regulations in various countries have become stricter. Therefore, in order to comply with the recycling regulations, how to improve the recyclability of the entire sanitary product while maintaining the cleaning ability of the wet tissue is an issue in this technical field.

Prior Art Documents

Patent Documents

[0008]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0009] The object of the present invention is to provide a sanitary product that can be recycled more easily.

Means for Solving the Problems

[0010] The present invention includes a storage unit, a lid unit, and a sanitary unit. The storage unit includes a storage body made of a single type of recyclable plastic. The storage body is configured to define a storage space and have an opening that communicates the storage space with the outside. The lid unit includes a lid portion that completely covers the opening and is made of a single type of recyclable plastic, and an adhesive portion that adheres the lid portion and the storage body to each other. The sanitary unit includes a plurality of sanitary members overlapping in the accommodation space. Each of the sanitary members provides a sanitary product having a base layer made of a single type of recyclable plastic.

Advantages of the Invention

[0011] Since each of the accommodation main body, the lid portion, and the base layer of the sanitary product of the present invention is made of a single type of recyclable plastic, it can be recycled more easily, achieving the purpose of being easy to recycle after use.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Modes for Carrying Out the Invention

[0013] Before explaining the present invention in more detail, it should be noted that, where appropriate, reference numerals or the end portions of reference numerals are repeated between the figures to indicate corresponding or similar elements, and these may optionally have the same characteristics.

[0014] As used herein, the term "single type" recyclable plastic means that it is based on the resin identification code (abbreviated as "RIC") established by the Society of the Plastics Industry (abbreviated as "SPI") in the United States. The figure of the code consists of a triangle formed by an arrow circulating clockwise with a number written inside. For example, plastic No. 1 is polyethylene terephthalate (abbreviated as "PET"). That is, the "single type" recyclable plastic referred to in the embodiments is plastic with the same above-mentioned identification code.

[0015] As shown in FIGS. 1 and 2, an embodiment of the sanitary product of the present invention includes a housing unit 2, a lid unit 3, and a sanitary unit 4.

[0016] The housing unit 2 includes a housing body 21 made of a single type of recyclable plastic.

[0017] The housing body 21 is configured to have an opening 22 that defines a housing space and communicates with the outside.

[0018] In some embodiments, the housing unit 2 includes only the housing body 21. That is, the entire housing unit 2 is made of a single type of recyclable plastic.

[0019] The lid unit 3 includes a lid portion 31 that completely covers the opening 22 and is made of a single type of recyclable plastic, and an adhesive portion 32 that adheres the lid portion 31 and the housing body 21 to each other.

[0020] The lid portion 31 can be a single-layer structure or a multi-layer structure.

[0021] The constituent material of the adhesive portion 32 may be the same as or different from the constituent material of the lid portion 31.

[0022] In some embodiments, the constituent material of the adhesive portion 32 is the same as that of the lid portion 31.

[0023] In some embodiments, the adhesive portion 32 can repeatedly adhere the lid portion 31 to the surface of the housing body 21.

[0024] The sanitary unit 4 includes a plurality of sanitary members 41 that overlap in the storage space.

[0025] Each sanitary member 41 has a base layer 411 made of a single type of recyclable plastic.

[0026] Each base layer 411 is a single-layer woven or non-woven fabric, or a multi-layer woven or non-woven fabric.

[0027] The thickness of the fibers constituting the woven or non-woven fabric can be the same or different.

[0028] The basis weight of each base layer 411 is between 30 g / m 2 ~100 g / m 2 in between.

[0029] As shown in FIG. 3, in some embodiments, a plurality of pressing patterns 412 by pressing processes such as embossing are formed on the surface of each base layer 411. The plurality of pressing patterns 412 obtain different visual effects and are useful for liquid absorption.

[0030] In some embodiments, in order to enhance the hydrophilic / water retention property of the sanitary member 41, each sanitary member 41 further includes a hydrophilic additive.

[0031] The hydrophilic additive is at least one selected from the group consisting of water, hydroxy group moisturizing agents (such as propylene glycol, glycerol, butanediol, etc.), and preservatives (such as benzoic acid, chlorphenesin, phenoxyethanol, etc.).

[0032] The addition amount of the hydrophilic additive is 280% to 300% of the basis weight of the base layer 411.

[0033] Specifically, for example, when the basis weight of each base layer 411 is 50 g / m 2 in the case of, the actual addition amount of the hydrophilic additive in the base layer 411 per square meter is 140 g to 150 g.

[0034] The recyclable plastic constituting the housing body 21 (the entire housing unit 2 when the housing unit 2 includes only the housing body 21), the lid portion 31 (the entire lid unit 3 when the constituent materials of the adhesive portion 32 and the lid portion 31 are the same), and the base layer 411 is each selected from the group consisting of polyolefin (for example, polyethylene (PE), polypropylene (PP)) and polyester (for example, PET).

[0035] In some embodiments, the polyolefin is polypropylene.

[0036] In some embodiments, in order to be more easily recyclable, at least two of the housing body 21 or the entire housing unit 2, the lid portion 31 or the entire lid unit 3, and the base layer 411 are made of the same material.

[0037] In some embodiments, in order to further improve the recyclability of the entire sanitary product, the housing body 21 or the entire housing unit 2, the lid portion 31 or the entire lid unit 3, and the base layer 411 are made of the same type of recyclable plastic.

[0038] According to the above, since each of the housing body 21 or the entire housing unit 2, the lid portion 31 or the entire lid unit 3, and the base layer 411 of the sanitary product of the present invention is made of a single type of recyclable plastic, the composition of a single component is simplified, avoiding the conventional composite structure that needs to be separately processed, and reducing the complexity of processing waste.

[0039] In addition, since at least two or all of the housing body 21 or the entire housing unit 2, the lid portion 31 or the entire lid unit 3, and the base layer 411 can be made of a single type of recyclable plastic, it is advantageous for simplifying the process of recycling classification and can surely achieve the object of the present invention.

[0040] The present invention has been described in connection with what are considered to be exemplary embodiments. However, the present invention is not limited to the disclosed embodiments, and is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to include all such modifications and equivalent arrangements.

[0041] The above embodiments are illustrative of the principles and effects of the present invention and do not limit the present invention. Those skilled in the art can make some changes and modifications to the above embodiments on the premise of not departing from the spirit and scope of the present invention. Therefore, all changes and modifications made on the premise that those skilled in the art do not depart from the gist of the present invention should be included in the protection scope of the present invention.

Industrial Applicability

[0042] According to the present invention, it is possible to provide a sanitary product that can be recycled more easily.

Explanation of Reference Numerals

[0043] 2 Housing unit 21 Housing body 22 Opening 3 Lid unit 31 Lid portion 32 Adhesive portion 4 Sanitary unit 41 Sanitary member 411 Base layer 412 Pressing pattern

Claims

1. A container unit, a lid unit, and a sanitary unit, The storage unit includes a storage body made of a single type of recyclable plastic; The storage body is configured to define a storage space and to have an opening that communicates the storage space with the outside, The lid unit includes a lid portion that completely covers the opening and is made of a single type of recyclable plastic, and an adhesive portion that adheres the lid portion and the storage body to each other, The sanitary unit includes a plurality of sanitary members overlapping each other in the storage space, Each of said sanitary members has a base layer constructed from a single type of recyclable plastic.

2. The recoverable plastic constituting the storage body is selected from the group consisting of polyolefins and polyesters, The recoverable plastic constituting the lid portion is selected from the group consisting of polyolefins and polyesters, 2. The sanitary article according to claim 1, wherein the recyclable plastic constituting the base layer is one selected from the group consisting of polyolefins and polyesters.

3. The sanitary article according to claim 2, wherein the polyolefin is polypropylene.

4. The sanitary article according to claim 1 , wherein the base layer is a knitted or nonwoven fabric.

5. The basis weight of the base layer is 30 g / m 2 ~100g / m 2 The sanitary article according to claim 1, wherein

6. The hygiene member further comprises at least one hydrophilic additive selected from the group consisting of water, a hydroxyl group moisturizer, and a preservative; The sanitary article according to claim 1, wherein the weight of the hydrophilic additive is between 280% and 300% of the base layer.

7. The sanitary product according to claim 1 , wherein at least two of the housing body, the lid portion, and the base layer are made of the same material.

Citation Information

Patent Citations

  • Package of disposable wipes

    US20190039813A1