Lid for sheet material package
The lid for sheet material packages addresses the issue of multiple sheet extraction by using a central hole and paired slits to provide resistance, ensuring single-sheet withdrawal and reducing evaporation.
Patent Information
- Application Number
- JP2023087857
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-05-29
- Publication Date
- 2024-12-11
AI Technical Summary
Existing lids for sheet material packages fail to reliably pull out sheets one by one, often causing multiple sheets to be drawn out together, and may lead to evaporation of moisture or alcohol impregnated in the sheets.
A lid design featuring a central hole and paired slits, including linear first slits and arc-shaped second slits, provides resistance to ensure single-sheet extraction while minimizing the opening area to reduce evaporation.
The lid effectively prevents multiple sheets from being pulled out simultaneously and reduces moisture evaporation, ensuring reliable single-sheet withdrawal and minimizing moisture loss.
Smart Images

Figure 2024171020000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a lid for a sheet material package, which is used to pull out sheet materials, such as wet tissues, one by one, from a container in which the sheet materials are stored in a stacked manner. [Background technology]
[0002] Patent Document 1 discloses a lid provided on a box surrounding a container housing a stack of sheet materials impregnated with water or alcohol. The lid has an outlet at the top, and the stacked sheet materials inside the package are pulled out through the outlet for use. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-2548 Summary of the Invention [Problem to be solved by the invention]
[0004] When using the lid of Patent Document 1 to pull out sheet material from inside a container through an outlet, there is a problem that if an appropriate resistance force is not generated at the outlet, when the first sheet is pulled out, the second sheet will also be pulled out in succession.
[0005] Also known is a lid for a sheet material package that has a separate outlet connected to the opening of the package to ensure that the sheet material can be pulled out one by one, and that provides resistance by sliding the outlet under the package when pulling out the sheet material.
[0006] However, even when such an outlet is provided, there are problems in that depending on the shape of the outlet and the size of the opening area, it may not be possible to reliably pull out the sheet material one by one, and the water and alcohol contained in the sheet material may easily evaporate.
[0007] The object of the present invention is to solve the above-mentioned problems and provide a lid for a sheet material package that can reliably pull out sheet material one by one and has a small opening area to reduce evaporation of moisture and other substances impregnated in the sheet material. [Means for solving the problem]
[0008] In order to achieve the above-mentioned object, the lid for sheet material packaging of the present invention is composed of a main body having a flat back surface and an opening / closing part that is connected to the main body via a pivoting part and can be opened and closed freely, and is a lid for sheet material packaging that is attached to the top surface of a packaging body containing a laminate of sheet material, and is characterized in that the main body is provided with an extraction hole part that communicates with the opening of the packaging body, and the extraction hole part is composed of a centrally located central hole part, a pair of linear first slits located to the left and right of the central hole part, and a pair of arc-shaped second slits that connect the central hole part and the pair of first slits. Effect of the Invention
[0009] According to the lid for sheet material packaging of the present invention, by forming a pressing piece that sandwiches a narrow, arc-shaped slit, when sheet materials are pulled out one by one, the second sheet material is not pulled out together with the first sheet material, and evaporation of moisture and the like from the sheet material is reduced. [Brief description of the drawings]
[0010] [Figure 1] FIG. 2 is a perspective view of the lid for the sheet material package with the opening / closing part closed. [Diagram 2] FIG. 2 is a perspective view of a lid for a sheet material package with an opening / closing part open. [Diagram 3] FIG. 2 is a plan view of the lid for the sheet material package with the opening / closing part open. [Figure 4] FIG. 2 is a perspective view of a container body with a lid for a sheet material package attached thereto; [Diagram 5] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0011] The present invention will now be described in detail with reference to the illustrated embodiments. FIG. 1 is a perspective view of the lid for a sheet material package with the opening / closing part closed, FIG. 2 is a perspective view with the opening / closing part open, and FIG. 3 is a plan view of the main body part.
[0012] The lid for the sheet material package is made of synthetic resin and is composed of a main body 1 with a flat back surface and an opening / closing part 3 that is connected to the main body 1 via a rotating part 2 and can be opened and closed freely. It is used by attaching the lid for the sheet material package to the top surface B1 of package B which contains a layered body of sheet material S as shown in Fig. 4. The sheet material S contained in package B is, for example, wet tissues impregnated with water or alcohol.
[0013] As shown in the figure, the opening / closing part 3 is connected to the main body part 1 via a rotating part 2 such as a hinge, and is configured to cover the main body part 1. A spring material 2a is attached to the rotating part 2, which urges the opening / closing part 3 in the opening direction. The opening / closing part 3 has a flat part 3a in the shape of the outline of an animal, for example, a mascot, and is designed to be kept closed relative to the main body part 1 by a locking claw 3b. The locking claw 3b is located on the tip side of the rotation starting point of the opening / closing part 3 where the spring material 2a is located.
[0014] A thin bottom plate 1a is formed on the bottom surface of the main body 1, and an outlet hole 1b that is wide in the left-right direction and stands up from the bottom plate 1a is provided in the center of the bottom plate 1a. As shown in Fig. 4, by attaching a sheet material package lid to the top surface B1 of the package B, the outlet hole 1b communicates with the opening of the package B through which the sheet material S is taken out.
[0015] A double first wall 1c is formed around the periphery of the extraction hole 1b, and a long groove 1d is formed in the first wall 1c. A second wall 3c of the same shape provided on the back side of the opening / closing part 3 is fitted into the long groove 1d. A seal material 1e made of a soft synthetic resin material or the like is filled in the long groove 1d.
[0016] Furthermore, a part of the main body 1 is provided with a flexible pressing piece 1f for locking the opening / closing part 3. This pressing piece 1f has a thin plate shape that bends up and down when pressed, and is structured to lock the locking claw 3b of the opening / closing part 3 with a locking part 1g, which is the back surface of the pressing piece 1f.
[0017] The opening / closing portion 3 is normally maintained in an engaged state by the engaging portion 1g and the locking claw 3b, the second wall portion 3c is fitted into the long groove 1d, and the space between the main body portion 1 and the opening / closing portion 3 is sealed by the sealing material 1e.
[0018] When the sheet material S is to be removed, the pressing piece 1f is pressed, so that the pressing piece 1f sinks diagonally forward, the locking claw 3b is released from the locking portion 1g, and the opening / closing portion 3 is opened by the spring material 2a.
[0019] The extraction hole portion 1b of the main body 1 is composed of a central hole portion 1h located in the center, a pair of linear first slits 1i located on the left and right sides of the central hole portion 1h, and a pair of arc-shaped second slits 1j connecting the central hole portion 1h and the pair of first slits 1i.
[0020] FIG. 5 is an enlarged plan view of the extraction hole portion 1b, in which the central hole portion 1h has an inner diameter 1k that is a center line that divides the extraction hole portion 1b into left and right equal parts, and the pair of first slits 1i are parallel to this center line.
[0021] The second slit 1j has an arc shape with the inner diameter 1k as its diameter and a center point 1o at a point on a virtual line 1n that starts at one end 1l of the inner diameter 1k, extends in a direction perpendicular to the aforementioned center line, i.e., in the left-right direction, and ends at one end 1m of the first slit 1i, or ends at the intersection point where an extension line extended from one end 1m of the first slit 1i in the outward direction along the longitudinal direction of the first slit 1i intersects with the imaginary line 1n.
[0022] A central angle θ of the central point 1o with respect to the second slit 1j is set to 40 degrees to 80 degrees. The first and second slits 1i and 1j have narrow widths that are substantially the same.
[0023] The position of the center point 1o has been described as being located near one end 1m of the first slit 1i, which is the upper side in the front view, but it may be located near the other end 1p of the first slit 1i, which is the lower side in the front view. Also, the direction of the arc may be different between the left and right.
[0024] Although the length of the inner diameter 1k and the length of the first slit 1i are approximately equal, it is possible to shorten the length of the first slit 1i to approximately 2 / 3 of the length of the inner diameter 1k.
[0025] In this way, by forming a central hole 1h and an extraction hole portion 1b consisting of a pair of first and second slits 1i, 1j in the bottom plate 1a, a pair of tongue-shaped pressing pieces 1q having an arc-shaped edge with the second slit 1j as its edge and a pressing piece 1r having an inverted arc-shaped edge are formed on both the left and right sides between the central hole 1h and the first slits 1i on both sides.
[0026] These pressing pieces 1q, 1r provide resistance when the sheet material S is pulled out, and the upper and lower sheet materials S can be separated and pulled out one by one. In particular, the edges of the pressing pieces 1q, 1r have long edges in an arc shape or an inverted arc shape due to the narrow second slit 1j, and are effective in providing resistance to the sheet material S when both left and right edges of the sheet material S are pulled out.
[0027] Furthermore, by making the first and second slits 1i, 1j narrow and reducing the opening area of the extraction hole portion 1b to a necessary size, it is possible to prevent the moisture and the like impregnated in the sheet material S from evaporating.
[0028] In order to pull out the sheet material S from package B using the lid for the sheet material package, first open the opening of package B, place the lid for the sheet material package on package B, and adhere package B to the bottom plate 1a of the main body 1 with double-sided tape or the like. Then, the lid for the sheet material package is fixed to package B, and the gap between package B and the lid for the sheet material package is sealed.
[0029] To remove the sheet material S from the packaging body B, pressing the pressing piece 1f releases the engagement of the engagement portion 1g and the locking claw 3b, and the opening / closing portion 3 is lifted by the spring material 2a, so that the topmost sheet material S exposed at the opening of the packaging body B can be picked up with the fingers through the central hole portion 1h and pulled upward.
[0030] By providing an arc-shaped second slit 1j as an outlet that communicates with the central hole 1h and the first slit 1i, pressing pieces 1q and 1r having elasticity in the upward direction are formed.
[0031] The pressing pieces 1q and 1r, which have a central hole 1h and a first slit 1i on the sides and a second slit 1j at their tips, can provide an appropriate resistance to the pulled-out sheet material S. In other words, the pulled-out sheet material S is caught on the arc-shaped and inverse arc-shaped edges of the pressing pieces 1q and 1r that sandwich the second slit 1j, thereby increasing the resistance to removal.
[0032] Furthermore, by providing the first slit 1i, the pressing pieces 1q, 1r are made easier to deform upward, and by narrowing the width of the first slit 1i, i.e., making it linear, the width of the withdrawal hole portion 1b can be reduced.
[0033] By making the second slit 1j arc-shaped, the width of the central hole 1h can be made smaller than if the second slit 1j were straight. Also, if the arc shape is curved more like a U-shape, the sheet material S will get caught in the curved part and break.
[0034] In this way, the pressing pieces 1q and 1r provide an appropriate resistance force, allowing the top sheet material S to slip through the gap of the second slit 1j while leaving the next sheet material S behind, and to be pulled out without breaking.
[0035] When the uppermost sheet material S is pulled out, the speed at which it is pulled out through the second slit 1j is necessarily slower than the speed at which it is pulled out upward through the central hole 1h due to the resistance.
[0036] After the sheet material S has been pulled out, the opening / closing part 3 can be closed and locked with the locking claw 3b. The second wall 3c of the opening / closing part 3 abuts against the sealing material 1e in the long groove 1d, so that the opening / closing part 3 is airtightly joined to the main body 1 when closed, and the moisture and alcohol impregnated in the sheet material S evaporates little.
[0037] Even when the opening / closing portion 3 is open during use, there is no large opening other than the central hole 1h, so that evaporation of moisture and the like from the sheet material S is small.
[0038] In this way, according to the lid for sheet material packages of the present invention, by forming the pressing pieces 1q, 1r that sandwich the narrow, arc-shaped second slit 1j, when the sheet materials S are pulled out one by one, the second sheet material S is not pulled out together with the first sheet material S, and evaporation of moisture and the like from the sheet materials S can be reduced. [Explanation of symbols]
[0039] 1 Main unit 1b Extraction hole 1c First wall 1d Long groove 1e Sealing material 1h center hole 1i First slit 1j Second slit 1k inner diameter 1l, 1m one end 1n Virtual Line 1o center point 1p other end 1q, 1r clamping piece 2 Rotating part 3 Opening and closing section 3c Second wall B Packaging B1 top surface S Sheet material θ central angle
Claims
1. A lid for a sheet material package, comprising a main body having a flat back surface and an opening / closing part connected to the main body via a rotating part and capable of being opened and closed freely, the lid being attached to a top surface of a package containing a laminate of sheet materials, The main body portion is provided with a pull-out hole portion communicating with an opening of the packaging body, A lid for a sheet material packaging body, characterized in that the withdrawal hole portion is composed of a central hole portion located in the center, a pair of linear first slits located to the left and right of the central hole, and a pair of arc-shaped second slits connecting the central hole portion and the pair of first slits.
2. The central hole portion has an inner diameter that is a center line that bisects the extraction hole portion into left and right portions, the first slit is parallel to the center line; the second slit has an arc shape with the inner diameter as its diameter and a center point on a virtual line that starts from one end of the inner diameter, extends in a direction perpendicular to the center line, and ends at one end of the first slit, or ends at an intersection point where an extension line extending from the one end of the first slit in an outward direction along the first slit intersects with the second slit, A lid for a sheet material package, characterized in that a central angle of the central point with respect to the second slit is 40 degrees to 80 degrees.
3. A lid for a sheet material packaging body as described in claim 1 or 2, characterized in that the central hole and the first slit are arranged on the sides, the second slit is arranged at the tip, and a pair of pressing pieces are arranged to sandwich the second slit.
4. 3. A lid for a sheet material package according to claim 1, wherein the central hole is substantially rectangular.
5. 3. The lid for a sheet material package according to claim 1, wherein the width of the first slit is substantially equal to the width of the second slit.
6. A lid for a sheet material packaging body as described in claim 1 or 2, characterized in that a first wall portion having a long groove formed therein is erected on the main body portion so as to surround the withdrawal hole portion, and a sealing material is sealed within the long groove.
7. A lid for a sheet material packaging body as described in claim 6, characterized in that a second wall portion is erected on the back surface of the opening and closing portion, the tip of which abuts against the sealing material in the long groove when the opening and closing portion is closed.
Citation Information
Patent Citations
Wet tissue package
JP1997002548A
