JP2022145352A - Lid member - Google Patents

Abstract

To provide an environmentally-friendly lid member with superior strength that is easy to manufacture independently of the shape of the lid member etc., by using a paper material, and also can secure sufficient sealability in closing the lid.SOLUTION: A lid member includes: a base part 3 which has an opening part so formed that a wiping sheet in a package is fitted to a wiping sheet taking-out opening formed in the package, and can be taken out of the wiping sheet taking-out opening of the package, and is fitted to the package; and a lid part 2 which can open and close the opening part formed in the base part, wherein the base part and the lid part are formed by pulp molding.SELECTED DRAWING: Figure 2

Description

The present invention relates to a lid member.

2. Description of the Related Art Conventionally, there has been known a packaging body in which a wiping sheet such as a wet sheet formed by impregnating a base fabric made of a nonwoven fabric or the like with a chemical liquid or the like is contained in a bag or a box. In general, a plurality of wiping sheets are stored in a state of being superimposed, and are constructed so as to be able to be taken out from an opening formed in a bag or the like. The opening is normally closed by a lid member, and is opened when the cleaning sheet is taken out.

As a lid member, a simple lid member that opens and closes an opening of a bag or the like with a sealing member is known, as disclosed in Patent Document 1 shown below. However, the seal member disclosed in Patent Document 1 is formed using a re-peelable seal member. However, the adhesive strength of the sealing member gradually weakens as the sealing member is repeatedly applied and peeled off. I had a problem. In addition, especially when this sealing member is used in a bag, wrinkles tend to form around the opening as the amount of cleaning sheets contained in the bag decreases, and when the sealing member is attached, Another problem is that a gap is likely to occur between the sealing member and the bag body, making it difficult to maintain airtightness.

In order to solve such problems, a cover member for a package formed using a thermoplastic synthetic resin material such as polyethylene (PE) or polypropylene (PP) disclosed in Patent Document 2 shown below is conventionally known. The lid member disclosed in Patent Document 2 includes a base portion attached to the contents, a mouth portion formed with an opening in the base portion, and a lid portion that opens and closes with respect to the base portion. It is used by sticking it to the package so that the part and the opening of the base part of the lid member are at the same position. The lid member is configured so that the lid portion is normally closed and the lid portion can be opened during use such as when taking out the cleaning sheet.

JP 2016-016883 A Utility Model Registration No. 3207763

The lid member disclosed in the above-described Patent Document 2 is formed using a plastic material or the like, and thus has a problem that it goes against the efforts to address environmental problems, which have been actively carried out in recent years. On the other hand, various biodegradable plastic materials, which are said to be environmentally friendly, have been developed, and it is becoming possible to manufacture environmentally friendly lid members by using biodegradable plastic materials. However, biodegradable plastic materials are more expensive than conventionally widely used plastic materials, and the more they are used, the more the manufacturing cost increases. In particular, since the amount of the lid member used for the above-mentioned package or the like is remarkably large in the market, even if the increase in manufacturing cost per lid member is slight, the lid member has become a large quantity. The increase in overall manufacturing costs in the case would be enormous. Therefore, at present, it is difficult to say that it is realistic to use an expensive biodegradable plastic material for the lid member as a countermeasure against environmental problems.

In order to solve such problems, it is conceivable to use a paper material such as cardboard for the cover member. However, unlike plastic materials, it is difficult to freely mold such paper materials, so there is a problem that it is not easy to provide a highly airtight cover member using paper materials at a low cost. is doing. In order to solve such problems, it is conceivable to increase the paper thickness of the paperboard, divide the process of forming the lid member into several steps, or join separate members. However, such a method complicates the structure of the lid member and increases raw material costs and manufacturing costs. There is a problem that it may become difficult to maintain the quality of the lid member above a certain level due to excessive force being applied to the paperboard.

The present invention has been made in view of such problems, and by using a paper material, it is easy to manufacture without depending on the shape of the lid member, and it is sealed when the lid is closed. To provide an environment-friendly lid member which can sufficiently secure the durability and has excellent strength at a low cost.

The inventors of the present application made earnest studies in view of the various problems of the above-described conventional techniques. As a result, in consideration of the environment, paper is used as the raw material, and it has excellent moldability during manufacturing, airtightness after molding, and overall strength, does not easily change shape or collapse, and is waterproof・We discovered that a lid member with excellent water resistance and chemical resistance could be realized at a low cost.

That is, the present invention
(1) A lid for attaching a wiping sheet contained in a package to a wiping sheet outlet formed in the package, wherein the wiping sheet is attached from the wiping sheet outlet of the package. a base attached to the packaging body having an opening formed to allow extraction; and a lid capable of opening and closing the opening formed in the base, the base and the lid comprising: A lid characterized by being formed by pulp molding,
(2) The lid according to (1) above, wherein a rising wall is formed on the periphery of the opening, and the outer surface of the rising wall is in contact with the inner surface of the lid when the lid is closed.
(3) The lid according to (1) above, wherein a rising wall is formed on the periphery of the opening, and the vicinity of the upper end of the rising wall contacts the inner surface of the lid in a pressed state when the lid is closed.
is the gist.

According to the present invention, the lid is attached to a wiping sheet outlet formed in the package to attach the wiping sheet stored in the package to the wiping sheet outlet of the package. a base attached to the packaging body having an opening from which a wiping sheet can be taken out; and a lid capable of opening and closing the opening formed in the base, wherein the base and the lid To provide a lid which is excellent in moldability and workability because the part is formed by pulp molding, can be easily formed even if it has a complicated shape, and has good quality after molding. becomes possible. Moreover, since the manufacturing process can be simplified, the production efficiency of the lid can be greatly improved.

It is an external appearance perspective view showing the state which attached the lid|cover which is embodiment which concerns on this invention to the package. FIG. 3 is an external perspective view showing a lid in a closed state; FIG. 3 is an external perspective view showing the lid in an open state; It is a longitudinal cross-sectional view of a lid.

An embodiment of a lid body according to the present invention will be described in detail with reference to the drawings. In this specification, as an object to which the lid is attached, a package containing a cleaning article such as a wiping sheet such as a wet tissue is used, and the lid according to the present invention is attached to the package. Although an example in which a body is applied will be described, the object to which the lid according to the present invention can be applied is not limited to a package containing cleaning articles. In addition, the contents of the package may be a wet type such as a wet tissue in which a base cloth is impregnated with various liquids such as a chemical liquid, or a so-called dry type cleaning article or various cleaning supplies. . Moreover, the package body may be any as long as it can accommodate the contents such as a bag body or a box body. The "wiping sheet" in this specification includes the above-mentioned cleaning items, such as wet wipes, disinfecting wet wipes, butt wipes, tissue paper, flooring sheets, and cleaning sheets around kitchens and microwave ovens. , furniture cleaning sheets, automobile interior cleaning sheets, and so on. Moreover, the lid body according to the present invention can utilize a lid body for a package capable of accommodating a plurality of these wiping sheets.

As shown in FIG. 1, the lid 1 is attached to a package 101 and used. The lid 1 is for suppressing drying of the wiping sheet (including a stack 103 in which a plurality of wiping sheets are stacked), which is the content housed in the package 101. The package 101 It is joined to a wiping sheet outlet (not shown) formed in the . Methods for bonding the lid 1 to the package 101 include, for example, bonding using various adhesives such as hot-melt adhesives, bonding by heat sealing, ultrasonic bonding, high-frequency bonding, and bonding by heat sealing. Any conventionally known joining method may be adopted and used.

The package 101 has a bag 102 and a layered body 103 as contents, and the layered body 103 is housed inside the bag 102 . A cleaning sheet outlet (not shown) is formed in the bag body 102 . Before use, the cleaning sheet outlet is sealed with a sealing body (not shown) made of an airtight film or sheet. It is designed to open. The bag body 102 is formed in a pillow-shaped bag shape by sealing the ends of an airtight plastic sheet or film by heat sealing or the like. The bag body 102 is made of an airtight material, and is composed of, for example, a two-layer laminated body composed of an inner layer and an outer layer. For the inner layer, for example, a laminate of one or more of polyethylene, polypropylene, polyester, polyamide, vinyl chloride, vinylidene chloride and cellophane, or a composite obtained by laminating aluminum foil is used. Moreover, polyethylene terephthalate (PET) or the like is used for the outer layer. In this specification, an example of the bag body 102 that is composed of two layers, the inner layer and the outer layer, has been described, but the configuration of the bag body 102 is not limited to the above. For example, it may be a multi-layered one having three or more layers, or conversely it may be a single-layered one consisting of only one layer. Materials used for the inner layer and the outer layer are not limited to those described above, and other materials may be arbitrarily selected and used.

The laminate 103 is formed by laminating a plurality of wiping sheets. A wiping sheet is a sheet-like object formed by impregnating a base cloth made of, for example, a nonwoven fabric or the like with a chemical solution or the like. The method of stacking and folding the wiping sheets, and the stacking method of forming the laminate 103 using the wiping sheets may be arbitrarily selected from various conventionally known modes. Moreover, the laminate 103 is not limited to the wet type laminate described above, and may be a dry type laminate in which the base fabric is not impregnated with a chemical solution or the like.

The lid body 1 includes a lid portion 2, a base portion 3, and a hinge portion 4. The lid portion 2 and the base portion 3 are integrally connected via the hinge portion 4, and can be opened and closed. is formed as The lid portion 2, the base portion 3, and the hinge portion 4 may be integrally molded, or the lid portion 2 and the base portion 3 are formed separately, and the lid portion 2 and the base portion 3 are hinged. It may be integrally configured by being connected by the portion 4 . A hinge portion 4 is formed integrally with one of the lid portion 2 and the base portion 3, and the hinge portion 4 is joined to the other of the lid portion 2 and the base portion 3 to integrate the lid portion 2 and the base portion 3. can be configured Further, both the lid portion 2 and the base portion 3 are integrally formed with a hinge portion forming portion, and the hinge portion forming portion on the lid portion 2 side and the hinge portion forming portion on the base portion 3 side are joined to form a hinge. The lid portion 2 and the base portion 3 may be integrally connected via the hinge portion 4 as the portion 4 . From the viewpoint of ease of manufacture of the lid 1, it is preferable that the lid 1 has the lid portion 2, the base portion 3, and the hinge portion 4 integrally formed. Instead, for example, the lid portion 2 and the base portion 3 are directly connected, or the lid portion 2 and the base portion 3 are configured without the hinge portion 4 interposed therebetween, so that the lid portion 2 can be opened and closed with respect to the base portion 3. may be

Further, the shape of the lid body 1 in this specification is not limited to the elliptical shape as shown in FIG. It may be of various shapes.

The lid 1 according to the present invention is made of a pulp-based material, and can be obtained by integrally molding the lid portion 2, the base portion 3, and the hinge portion 4 from pulp-based raw materials. Further, in the lid body 1 of the present invention, when the separate lid portion 2 and the base portion 3 are integrally connected via the hinge portion 4, even if they are not all made of a pulp-based material, However, in this case, it is preferable that at least the lid portion 2 and the base portion 3 are made of a pulp-based material.

The pulp-based material is mainly composed of pulp such as wood pulp, non-wood pulp, and waste paper pulp, and preferably contains 50% or more, more preferably 70% or more, and still more preferably 80% or more, especially pulp. Those consisting of 100% are preferred. Materials other than pulp in pulp-based materials include non-pulp natural fibers, synthetic fibers, regenerated fibers, and the like. As the pulp-based material, a so-called paper obtained by making a sheet by making a slurry of pulp-based fiber raw material into a mesh, drying or press-drying, and making paper, and pulverized fiber raw material such as pulverized fiber are piled up by an air flow. The so-called pulp-based air-laid obtained by fiberizing and fixing the fibers of the stacked body with a binder, and the lamination of a plurality of these, as well as paper and pulp-based air-laid, synthetic resin and natural resin films and resin fibers Composite materials with other materials such as resin materials such as non-woven fabrics, metal materials such as aluminum foil, and wood materials such as wood foil can also be used. is preferred.

Pulp used for pulp-based materials includes softwood pulp such as red pine, Todomatsu, Ezo pine, Douglas fir, hemlock, and spruce, hardwood pulp such as beech, oak, birch, eucalyptus, poplar, and alder, bamboo pulp, cereal pulp, straw pulp, Non-wood pulp such as abaca pulp and cotton pulp, waste paper pulp and the like can be used. Further, examples of pulverized pulp include those obtained by pulverizing a raw material sheet made of pulp-based fibers with a pulverizer.

A paper material is composed of an aggregate of many fibers. Softwood pulp has a longer fiber length than hardwood pulp even after pulverization. Therefore, a paper material using pulverized pulp obtained from softwood pulp has a high degree of entanglement between fibers, and as a result, the strength is improved. The paper material is made of liquid-permeable fibers, preferably pulp paper or fibers made mainly of pulp. It is preferable that the fibers used in the paper material have a pulp content of 50% or more. When the paper material is made of fibers with a pulp content of 50% or more, the overall flexibility of the paper material can be improved, and the production efficiency during manufacture can be improved. In addition, by increasing the pulp content, the lid member formed using this paper material can be easily decomposed in water, soil, or air, further reducing the environmental load and giving greater consideration to the environment. can be improved.

The pulp-based material for forming the lid 1 may be of the same thickness, material, or the like, or may be different in the case of forming a plurality of layers. The pulp-based material preferably has a basis weight of 300 g/m ² to 1000 g/m ² , more preferably 400 g/m ² to 900 g/m ² . The paper material, which is a paper-based material used as the pulp-based material, may be composed of a sheet of thick paper formed by pulp molding, which will be described later, or may have a basis weight of 200 g/m ² or more formed by pulp molding. A plurality of thick papers of 500 g/m ² may be pasted together to obtain the above weight per unit area. In this case, if the overall basis weight of the lid 1 is less than 300 g/m ² , it becomes difficult to ensure sufficient rigidity as the lid 1 , while the overall basis weight is 1000 g/m ² . More than that increases the cost of materials and increases manufacturing costs. Moreover, when manufacturing the lid 1, it becomes difficult to apply various processing such as punching and folding to the paper material.

The lid 1 is formed by pulp molding. Here, pulp molding is one of the methods of molding the lid 1, and after pulverizing a paper material as a raw material, it is made into a turbid liquid composed of water and pulp fibers, and the surface of this turbid liquid is formed into a wire net-like shape, for example. Pulp fibers are layered on the surface of the formed mold by being sucked into the formed mold, molded by covering the mold with a press mold, and then dried to obtain the lid 1. The method. The lid 1 made of pulp mold obtained by such a method is characterized in that the thickness, overall strength, shape, etc. of the lid 1 can be relatively freely formed, and that it is excellent in formability. have.

As the pulp-based material used for the lid 1, a molded pulp-based material is provided with a coat layer on one or both sides thereof, or coated paper or the like is further provided with a coat layer on one or both sides thereof to further improve water resistance. It is preferable to use the A coating layer for improving water resistance may be provided on either side of the pulp-based material. From the viewpoint of maintaining the strength of the body 1 and improving durability, it is preferable to have coat layers for improving water resistance on both sides.

The coat layer can be formed by attaching a film, applying a coating agent, or the like. Examples of films forming the coating layer include polystyrene, olefin resins such as polyethylene and polypropylene, polyethylene terephthalate, polyurethane, polyvinyl chloride cyanoacrylate, epoxy resins, acrylic resins such as polyacrylic acid and polymethacrylic acid, and nylon. , polycarbonate; starch-based resins such as polycaprolactone, polyhydroxyalkanoate, polyhydroxybutyrate, polylactic acid, esterified starch, cellulose acetate, polyethylene succinate, polyvinyl alcohol, polyglycolic acid, chitosan/cellulose/starch, poly( hydroxybutyrate/hydroxyhexanoate), poly(butylene succinate/adipate), poly(butylene succinate/carbonate), poly(ethylene terephthalate/succinate), poly(butylene adipate/terephthalate), poly(tetramethylene adipate/ terephthalate) and other naturally degradable resins and naturally degradable resin mixtures; naturally degradable biomass resins and mixtures of naturally degradable biomass resins; fluorine resins, silicone resins, UV curable resins, ethylene-vinyl acetate copolymers, ethylene- Vinyl alcohol copolymer, ethylene-propylene copolymer, ethylene-propylene-butadiene copolymer, acrylic-styrene copolymer, styrene-butadiene copolymer, acrylonitrile-butadiene-styrene copolymer, etc. Films composed of copolymers of monomers that can be used, natural resins, paraffin, gelatin, cellophane, polymethylpentene, etc. can be used. Among these, naturally degradable resins, naturally degradable biomass resins, and naturally degradable resin films such as natural resins are preferable, and highly hydrophobic ones are more preferable.

Coating agents for forming the coating layer include the above synthetic resins, naturally degradable resins, naturally degradable biomass resins, natural resins, pine resin, lacquer, amber, gelatin, casein, tortoiseshell, chitin, chitosan, Various inks such as water-based inks, for example, which are composed of solutions or dispersions of natural polymers such as oysters and gums, can be used.

Spray coating, roll coating (reverse roll coating, forward rotation roll coating, etc.), knife coating, die coating, slot orifice coating, air doctor coating, kiss coating, blade coating, cast coating, and spin coating are the methods of applying the coating agent. , extrusion coating, hot melt coating, offset coating, etc., flexo coating, gravure coating, screen coating and offset coating are preferred, and gravure coating and flexo coating are more preferred. When a coating agent is applied to form a coating layer, the coating amount of the coating agent is 2 g/m ² to 30 g/m ² in terms of solid content in terms of water resistance and recyclability of the lid 1. preferably 4 g/m ² to 20 g/m ² .

The film forming the coat layer may be a single layer film or a multilayer film, and the coating agent may be applied not only with one type but also with two or more types of coating agents. It is preferable to use naturally decomposable resins such as starch-based resins and polylactic acid, and naturally decomposable resin mixtures for the films and coating agents, which can reduce the environmental load. Even poly(tetramethylene adipate/terephthalate) or the like is naturally degradable if the content is about 40%. The term "naturally degradable" as used herein refers to the property of being decomposed by microorganisms, ultraviolet rays, climate change, or the like in air, soil, or water. By using this naturally degradable material for the lid 1, the environmental load can be greatly reduced. In particular, since the volume of the lid body 1 generally distributed in the market is extremely large, forming the lid body 1 from a naturally degradable material greatly reduces the environmental load and greatly contributes to solving environmental problems. becomes a big one.

As shown in FIGS. 2 and 3, the lid portion 2 is configured to be able to open and close with respect to the base portion 3 . The lid portion 2 includes a bulging portion 5 and an outer peripheral portion 6 , and the outer peripheral portion 6 is formed on the outer peripheral edge of the bulging portion 5 so as to surround the bulging portion 5 . The bulging portion 5 and the outer peripheral portion 6 can be integrally formed by molding a forming member for forming the lid 1 .

The bulging portion 5 has a side wall portion 7 and a canopy portion 8 . The side wall portion 7 and the canopy portion 8 are formed integrally with the outer peripheral portion 6 when the lid portion 2 is formed by molding. The side wall portion 7 has one end formed continuously with the outer peripheral portion 6 and the other end side formed continuously with the canopy portion 8 , and rises upward between the outer peripheral portion 6 and the canopy portion 8 . configured to form The side wall portion 7 is tapered upward from the base portion 3 side, more specifically, the side wall portion 7 is tapered from the lower portion near the outer peripheral portion 6 side to the upper portion near the canopy portion 8 side. is formed to be In addition, in FIG. 2 and the like, the side wall portion 7 is formed in the tapered shape described above as a whole, but the manner of forming the tapered shape is not limited to the above. For example, the side wall portion 7 may be curved from the bottom to the top, and the side wall portion 7 as a whole may be tapered. It may be formed in a stepped shape tapering off as a whole. Also, the side wall portion 7 as a whole may be formed in a shape other than these so as to have a tapered shape.

Moreover, the side wall portion 7 is not limited to being formed in a tapered shape as a whole, but only a part of the side wall portion 7 is formed in a tapered shape that tapers from the bottom to the top. Alternatively, while most of the side wall portion 7 is tapered from the bottom to the top, only a portion of the side wall portion 7 may be formed so as not to have a tapered shape. good. Furthermore, when the side wall portion 7 is formed in the tapered shape described above, the taper angle does not need to be a constant angle from the bottom to the top. It may be arbitrarily changed and formed so that the taper angle is different. Moreover, you may form so that it may have a shape other than these.

The canopy portion 8 is a lid-like member formed at the upper end portion of the side wall portion 7 . As described above, the canopy portion 8 is preferably formed integrally with the side wall portion 7 by molding or the like, but may be formed separately from the side wall portion 7 . As shown in FIG. 2, in this embodiment, the canopy portion 8 is formed in a flat plate shape.

In the bulging portion 5 , the side wall portion 7 has an inner wall surface 10 formed on an inner wall 9 forming an inner wall of the side wall portion 7 (hereinafter, when the inner wall 9 is referred to as the inner wall surface 10 , the inner wall surface 10 is also included). The bulging portion 5 is formed such that a ceiling wall 11 connected to the side wall portion 7 constitutes an inner wall of the canopy portion 8, and a ceiling surface 12 is formed on the ceiling wall 11. ing. When the lid is closed, the inner wall 9 forms an outer wall 14 and an outer wall surface 15 of the surrounding wall 13 formed in the base portion 3 (hereinafter, the outer wall 14 is described as including the outer wall surface 15). It is formed so that it can be touched. Here, the contact between the inner wall 9 (inner wall surface 10) and the outer wall 14 (outer wall surface 15) includes the case where the inner wall surface 10 and the outer wall surface 15 are in overall contact. 14 is also included. Here, the phrase “the inner wall 9 and the outer wall 14 are in overall contact” means that the inner wall surface 10 of the inner wall 9 and the outer wall surface 15 of the outer wall 14 are in overall surface contact. Further, the phrase “the inner wall 9 and the outer wall 14 are partially in contact” means that the inner wall 9 and the outer wall 14 are partially in contact with each other, although the inner wall 10 and the outer wall 15 are not entirely in surface contact with each other. means that There are various aspects of this partial contact, for example, the inner wall 9 and the outer wall 14 are partially in surface contact, line contact or point contact, and the inner wall 9 and the outer wall 14 are in contact with each other. It also includes a mode in which a protruding object is protruded or brought into contact, and a mode other than these.

The inner wall 9 of the bulging portion 5 in the lid portion 2 and the outer wall 14 of the surrounding wall 13 in the base portion 3 are formed in a similar shape such that the inner wall 9 is along the outer wall 14, and the lid portion 2 is attached to the base portion 3. On the other hand, when the lid is closed, the inner wall 9 of the bulging portion 5 is fitted to the outer wall 14 of the surrounding wall 13 .

In addition, in the portion of the lid portion 2 surrounded by the inner wall surface 10 and the ceiling surface 12, as shown in FIG. there is The space portion 17 may be arbitrarily determined as long as it is large enough to accommodate the surrounding wall 13 formed in the base portion 3 when the lid is closed. The volume of the portion 17 is preferably large enough to enclose the surrounding wall 13 when the lid is closed.

In the lid portion 2, the portion of the inner wall 9 of the bulging portion 5 that overlaps the outer wall 14 of the surrounding wall 13 is coated with a water-resistant coating agent to improve the frictional force. preferably. This frictional force improving measure may be any measure capable of improving the frictional force generated between the inner wall 9 and the outer wall 14 when the lid is closed, at least in the overlapping portion where the inner wall 9 and the outer wall 14 overlap. At least one of the inner wall surface 10 of the inner wall 9 and the outer wall surface 15 of the outer wall 14 may be made non-glossy by, for example, forming minute unevenness on the surface. In this case, by forming at least one of the inner wall surface 10 and the outer wall surface 15 as a non-glossy surface, the frictional resistance between the inner wall surface 10 and the outer wall surface 15 can be increased, and when the lid is closed, The sealing performance of the lid portion 2 can be further improved.

It is preferable that the entire lid 1 be provided with a non-glossy surface as a measure to improve the frictional force, but at least one of the bulging portion 5 of the lid 2 and the surrounding wall 13 of the base 3 is made non-glossy. Furthermore, between the bulging portion 5 and the surrounding wall 13, the outer wall surface 15 of the outer wall 14 of the surrounding wall 13 and the inner wall surface 10 of the inner wall 9 of the side wall portion 7 of the bulging portion 5 is preferably a non-glossy surface, and at least one of the inner wall surface 10 of the inner wall 9 and the outer wall surface 15 of the outer wall 14 of the bulging portion 5 and the surrounding wall 13 is preferably a non-glossy surface. preferable.

In addition, it is preferable to form closing means for maintaining the closed state on the inner wall 9 of the side wall portion 7 on the side opposite to the hinge portion 4 of the lid portion 2 . For the closing means, for example, an adhesive that can be rejoined and re-separated at a predetermined position of the lid portion 2 and the base portion 3 is used, or a locking mechanism is used so that the lid portion 2 and the base portion 3 can maintain the closed state. Alternatively, pieces may be formed on the lid portion 2 and the base portion 3, and the locking pieces may be engaged with each other. Moreover, methods other than these may be used.

The outer peripheral portion 6 is formed in a surrounding shape surrounding the bulging portion 5 on the outer peripheral side of the side wall portion 7 of the bulging portion 5 . The outer peripheral portion 6 is formed in the shape of a flange that protrudes outward with respect to the bulging portion 5, so that the overall strength of the lid portion 2 can be maintained, and the base portion 3 is compressed when the lid is closed. It is formed so as to abut against the mounting portion 25 of the airtight seal. The length of the protrusion of the outer peripheral portion 6 to the outside may be determined arbitrarily. Further, the outer peripheral portion 6 is formed together with the bulging portion 5 when the lid portion 2 is formed by molding. As shown in FIG. 2 and the like, the outer peripheral portion 6 is formed so as to be continuous with the hinge portion 4 .

The base portion 3 is formed integrally with the lid portion 2 via a hinge portion 4 so that the lid portion 2 can be opened and closed from above. The base portion 3 includes an attachment portion 25 to the package 101 , a surrounding wall 13 rising from the attachment portion 25 , and an outlet 27 above the attachment portion 25 and on the upper side of the surrounding wall 13 . In addition, the upper surface 25a of the mounting portion 25 is arranged and formed so as to face the rear surface 6b of the outer peripheral portion 6 of the lid portion 2 when the lid is closed. A lower surface side of the attachment portion 25 serves as an attachment surface 28 for attachment to the bag body 102 .

The surrounding wall 13 can be formed integrally with the mounting portion 25 by molding or the like. Further, the surrounding wall 13 is tapered so that the size of the surrounding wall 13 nearer to the upper side becomes smaller than the size nearer to the mounting portion 25 located on the lower side. In addition, the surrounding wall 13 is not limited to a tapered shape having a straight surface, and may have a tapered shape having a curved surface. Alternatively, the surrounding wall 13 may be formed so as to gradually taper stepwise. The shape of the surrounding wall 13 when forming the surrounding wall 13 in a tapered shape is arbitrary. In addition, the surrounding wall 13 may be formed in a shape other than these so that it has a tapered shape as a whole. Also, the surrounding wall 13 may be partially tapered.

The outlet 27 is formed at a location surrounded by the inner side surface 13 a of the surrounding wall 13 . From the viewpoint of securing a large volume of storage portion 32, outlet 27 is preferably formed at the upper end portion of surrounding wall 13 as shown in the present embodiment. Further, as shown in FIG. 4, if the area near the upper end of the surrounding wall 13 and the vicinity of the outlet 27 is bent slightly inward, the strength of the vicinity of the outlet 27 can be improved. The strength of the base portion 3 can be greatly improved, and the base portion 3 can be made difficult to deform even when the contents such as the wet sheet in the bag body 102 are taken out, and the lid portion 2 is repeatedly opened and closed. Even in this case, it is possible to maintain the airtightness between the lid portion 2 and the base portion 3 when the lid is closed.

The inner periphery, which is located at the upper end of the surrounding wall 13 and is formed so as to surround the outlet 27, is provided with a non-moisture-absorbing treatment so as not to absorb moisture from the chemical solution impregnated in the base fabric such as wet tissue. is preferably carried out. By performing the non-moisture absorption treatment in this way, the chemical solution or chemicals contained in the cleaning sheet or the like penetrates into the paper material from the inner peripheral edge of the surrounding wall 13 or the like, and softens or softens the paper material. It is possible to prevent it from becoming fragile, and it is possible to impart durability to the extent that it can withstand repeated use over a long period of time.

As a non-moisture absorption treatment, the inner peripheral edge is protected by attaching a protective member so as to cover the entire inner peripheral edge, or by laminating a film member on the inner peripheral edge and joining these film members inside the inner peripheral edge. You may make it In addition, the inner peripheral edge may be impregnated with a coating agent or coated with a coating agent, or the inner peripheral edge may be compressed in the thickness direction to form a compressed portion, and the paper material at the inner peripheral edge The fiber density of the fiber may be increased to make it difficult to impregnate with various liquids such as chemicals. Among these, the coating treatment with a coating agent is preferable because it can provide non-hygroscopic treatment at low cost. The film member and coating agent used in the non-moisture absorption treatment can be the same as those used to form a coating layer on a paper material.

In addition, when the inner peripheral edge is subjected to a non-moisture-absorbing treatment, a protective member, a film member, or the like is placed inside the inner peripheral edge, or the inner peripheral edge is impregnated with a coating agent. It may be arranged inside the peripheral edge and may be arranged so as to entirely wrap around the inner peripheral edge. By performing non-moisture absorption treatment in this way, the frictional force between the inner peripheral edge and the wiping sheet is increased, so that when the contents such as the wiping sheet are pulled out, part of the wiping sheet is touched. In doing so, the wiping sheet can be subjected to a resistive force in the direction opposite to the force in the direction in which the wiping sheet is pulled out. Therefore, it is possible for the user to easily pick up the wiping sheet by inserting his or her fingers, and to give the wiping sheet an effective resistance force when pulling out the wiping sheet. The wiping sheets contained as bodies 103 can be separated and removed. It should be noted that the above-described aspects of the inner peripheral edge may be used alone, or may be used in combination with a plurality of the above-described aspects. For example, the coating agent may be applied while forming the compressed portion on the inner peripheral edge, or other modes may be used in combination.

The storage part 32 allows a part of the wiping sheet stored in the bag body 102 (such as the leading end of the wiping sheet to be taken out next) to be previously positioned near the outlet 27. - 特許庁It can be used as a space for By forming this storage part 32, one end of the remaining cleaning sheet or the like pulled out from inside the package 101 can be easily closed without returning it to the inside of the package 101 one by one. The next time the cleaning sheet is used, it can be easily pulled out.

The hinge portion 4 is integrally formed between the lid portion 2 and the base portion 3 . A bent portion is formed in the hinge portion 4, and the lid body 1 is bent at the bent portion. In other words, the lid portion 2 can be opened and closed with respect to the base portion 3 using this bent portion as a fulcrum. The size and shape of the hinge portion 4 may be determined arbitrarily, and the bent portion may be formed by molding in the same manner as the lid portion 2 and the base portion 3, or may be formed by other methods. Any method such as forming may be selected arbitrarily. Further, in FIG. 2 and the like, a hole is formed at the portion where the bent portion is formed in the hinge portion 4. Whether or not the hole is formed, the case where the hole is formed The size and shape of the hole may be determined arbitrarily.

Next, the effects of the lid body 1 according to the present invention will be described. First, the effects of opening and closing the lid 1 will be described. The lid 2 is open, and the outlet 27 is open. A user can insert a finger into the outlet 27 to pick up a part of the cleaning sheet (not shown) and pull it out of the bag body 102 .

Next, when the user rotates the lid portion 2 in the direction of closing the lid portion 2 with the hinge portion 4 as a base point, the inner surface side of the ceiling wall 11 in the lid portion 2 (ceiling surface 12 ) contacts the surrounding wall 13 in the vicinity of its upper end. Here, when the user further rotates the lid portion 2 in the closing direction, the upper end portion of the surrounding wall 13 that is in contact with the ceiling surface 12 is gradually pressed to close the lid portion 2 . Therefore, the close contact with the inner surface side of the lid portion 2 is enhanced, and the sealing performance of the entire lid body 1 can be improved.

Further, when the lid is closed in this way, the back surface of the lid portion 2 and/or the surface of the base portion 3, particularly the inner surface 10 of the inner wall 9 of the bulging portion 5 in the lid portion 2 and the surrounding wall 13 of the base portion 3 The frictional resistance between the lid portion 2 and the base portion 3 in the closed state can be increased by, for example, making the outer wall surface 15 a non-glossy surface. Therefore, when the lid body 1 is in the closed state, the sealing performance between the lid portion 2 and the base portion 3 can be further improved. Therefore, even after the opening of the bag 102 has been opened, the package 101 to which the lid 1 of the present invention is attached can still have the wiping sheet inside the bag 102 when the lid 1 is in the closed state. It is possible to greatly reduce the drying of the wiping sheet due to evaporation of the chemical solution impregnated in the wiping sheet, and it is possible to use the wiping sheet while storing it for a long period of time.

Furthermore, the lid body 1 of the present invention has improved airtightness as time elapses after production. This is because the water originally contained in the paper material forming the lid 1 expands inside, causing the paper material to swell and the bulging portion 5 of the lid 2 and the surrounding wall 13 of the base 3 to adhere tightly. It is conceivable that the sex will be higher. Therefore, the wiping sheet in good condition can be stored in the bag body 102 for a long period of time, and can be used by the user.

Further, the lid body 1 can maintain this closed state by closing the lid portion 2 while pressing the upper end portion of the surrounding wall 13 when closing the lid. At this time, if the lid body 1 is provided with a closing means, the user can easily close the lid by one-touch operation with only one hand.

Next, in the lid body 1, a description will be given of the operational effects when the lid portion 2, which is kept in the closed state, is opened. When the lid 1 holds the closed state, the upper end of the surrounding wall 13 is pressed by the lid 2 and adheres thereto. As a result, the airtightness of the lid 1 is maintained satisfactorily.

Here, when the user rotates the lid portion 2 in the opening direction by, for example, releasing the closed state of the closing means (not shown), the lid portion 2 rotates in the lid opening direction with the hinge portion 4 as the base point and opens. cover.

Normally, the lid 1 is repeatedly opened and closed several times until the laminate 103 contained in the bag 102 is completely used up. Even if such repeated opening and closing operations are performed, excellent sealing performance can be maintained for a long period of time, and it becomes easy to use up the wiping sheets contained in the bag body 102 to the end.

Further, the lid 1 is formed by molding using a paper material as described above. Therefore, from the viewpoint of addressing and considering environmental problems, which have become a matter of great concern in recent years, the lid body 1 can greatly contribute to it. Also, it is possible to greatly reduce the complexity and trouble that users tend to feel.

Further, when the bag body 102 to which the lid body 1 is attached is made of a plastic sheet, film, or the like, the bag body 102 tends to wrinkle as the number of wiping sheets stored in the bag body 102 decreases. state. However, by bonding the lid body 1 of the present invention to the bag body 102 in advance, even when the remaining amount of the stored wiping sheets is small, the wiping sheet can be easily taken out and the bag body 102 can be sealed. properties can be kept in their original state.

In addition, since the surrounding wall 13 and the side wall 7 of the bulging portion 5 of the lid 1 are tapered, a plurality of members can be stacked vertically for storage and distribution. It is possible to greatly improve the stackability at times. When a plurality of lid bodies 1 are to be sequentially stacked, the bulging part 5 of another lid body 1 enters the space in which the storage part 32 of the lid body 1 is formed, and the storage part 32 of the lid body 1 further enters. A plurality of lid bodies 1 can be stacked in a small space by forming the bulging part 5 of another lid body 1 into the space in which is formed. In this case, since the side wall 7 of the bulging portion 5 and the side wall of the surrounding wall 13 are formed in a tapered shape, the stacking height when the plurality of lids 1 are stacked is equal to the height of the topmost bulging portion 5. and the paper thickness of the lid portion 2 and the paper thickness of the base portion 3 of the lid body 1 superimposed thereunder. The stacking height of the lids 1 is equal to the total height of the bulging portion 5 of the lids 1 and the thickness of the paper, which is the number of the lids 1 stacked. Therefore, according to the lid body 1 described above, a large number of lid bodies 1 can be accommodated in a limited space, and the stackability can be greatly improved. It can be transported collectively, and the transport cost can be greatly reduced.

The non-wetting treatment may be performed by applying the coating agent described above to the ceiling surface 12 of the ceiling wall 11 of the lid portion 2 and the inner peripheral edge to form a coating film. In this case, since the coating film is formed so as to cover the paper material entirely, the coating film formed on the ceiling surface 12 and the coating film formed on the inner peripheral edge come into contact when the lid is closed. In this case, even if minute unevenness is formed on the end surface of the inner peripheral edge due to the contact of the coating films, the minute unevenness can be smoothed to some extent by forming the coating film. can be done. Therefore, when the lid is closed, the adhesion between the ceiling surface 12 of the lid portion 2 and the inner edge of the base portion 3 can be further improved, and the airtightness of the entire lid body 1 can be further improved.

Alternatively, the coating may be formed only on the inner periphery. In this case, the ceiling surface of the lid portion 2 and the coating film formed on the inner peripheral edge of the base portion 3 come into contact with each other when the lid is closed. Therefore, this aspect also makes it possible to further improve the airtightness of the lid 1 as a whole.

Further, instead of the above paint, a self-adhesive (or self-adhesive) paint (coating agent) may be applied to form a self-adhesive layer. can further enhance the adhesion of. Further, when this self-adhesive layer is formed, the lid portion 2 and the base portion 3 can be closed by the pressing force applied to the surrounding wall 13 when the lid portion 2 is operated. can be maintained. Therefore, it is possible to provide a function as a closing means, and in addition to the force to maintain the lid closed state by other closing means, by forming this self-adhesive layer, it is possible to maintain the lid closed state more firmly. is also possible. The self-adhesive for forming the self-adhesive layer exhibits pressure-sensitive adhesiveness only between the self-adhesives, but does not have adhesiveness to other materials. Therefore, it is necessary to provide the self-adhesive layer at both predetermined locations on the lid portion 2 side and predetermined locations on the base portion 3 side.

The self-adhesive layer may be made of latex such as natural rubber latex, or a mixture of natural rubber latex and synthetic resin emulsion. Examples of synthetic resin emulsions include vinyl acetate emulsions and acrylic emulsions such as polyacrylic acid, polymethacrylic acid, and acrylic copolymers. By providing such a self-adhesive layer, it is possible to further improve the airtightness between the lid portion 2 and the base portion 3 when the lid is closed. In addition, the self-adhesive layer can be repeatedly re-adhered and re-peeled over a long period of time.

The upper end portion of the surrounding wall 13 is formed so that the pressing force is applied from the lid portion 2 when the lid is closed, and the pressing force is maintained when the closed state is maintained. It is good if it is. For example, the inner peripheral edge of the surrounding wall 13 may be formed so as to face the radial center and upward instead of facing the radial center, or the upper end portion of the surrounding wall 13 may face the inner side. It may be formed in a curved radius shape so that the inner peripheral edge is positioned below the upper end. Further, the upper end portion of the surrounding wall 13 may be inclined in a linear tapered shape that tapers from the surrounding wall 13 toward the outlet 27, or the upper end portion of the surrounding wall 13 may be curved. It may be formed as a protruded portion, and the upper end portion may contact the ceiling surface 12 when the lid is closed. Even if the surrounding wall 13 is formed in this way, it is possible to obtain the same effect as described above. In these examples, the outlet 27 is positioned at the upper portion or the upper end portion of the surrounding wall 13, but it is not limited to this. For example, the outlet 27 may be formed at the lower portion or the lower end portion of the surrounding wall 13, or may be formed at another position.

The configuration and effects of the lid body 1 according to the present invention have been described above, but the above is merely an example of the lid body 1 according to the present invention, and is not limited to the gist of the present invention. may be changed arbitrarily within a range that does not deviate from Further, the above configurations are not limited to being used independently, and may be applied in arbitrary combination.

1 Lid 2 Lid 3 Base

Claims (3)

A lid for attaching a wiping sheet housed in a package to a wiping sheet outlet formed in the package,
a base attached to the package, having an opening formed so that the cleaning sheet can be taken out from the cleaning sheet outlet of the package;
a lid capable of opening and closing the opening formed in the base;
A lid body, wherein the base portion and the lid portion are formed by pulp molding. 2. The lid according to claim 1, wherein a rising wall is formed on the periphery of said opening, and the outer surface of said rising wall contacts the inner surface of said lid when the lid is closed. 2. The lid according to claim 1, wherein a rising wall is formed on the peripheral edge of said opening, and the vicinity of the upper end of said rising wall abuts against the inner surface of said lid in a pressed state when the lid is closed.

Images