Buffer member

Abstract

The utility model provides a buffering component which is good in fitting performance and capable of achieving a better buffering effect. The cushioning member (11) is configured in such a manner that a space for accommodating an object to be packaged is formed by a set of front sheet sections (15) and back sheet sections (16) that overlap each other, the sheet sections (15, 16) are configured from a sheet (17) made of a non-woven fabric, the sheet (17) having slits (18) that pass through the sheet (17) in the thickness direction and are arranged in a staggered manner, and the cushioning member (11) adopts the following structure. A front sheet section (15) and a back sheet section (16) are configured from two sheets (17) that overlap each other. The positions of slits (18) between the sheets (17) in a front sheet section (15) and a back sheet section (16) comprising the plurality of sheets (17) are made to differ from each other when the slits are in a closed state.

Description

TECHNICAL FIELD

[0001] The utility model relates to the buffer component for the display, the bundle, the packing of various commodities such as vegetables and fruits, food, boxed goods etc. BACKGROUND

[0002] As the buffer component, there is the buffer component disclosed in the following patent document 1. The buffer component is a structure in which a front sheet portion and a back sheet portion are opposed to each other and overlap each other, and a packaged article is housed in the inner side thereof, and the front sheet portion and the back sheet portion are each formed of a sheet made of nonwoven fabric in which a plurality of slits extending in one direction are arranged in a staggered manner. Also, the state in which the front sheet portion and the back sheet portion overlap each other is maintained by a point seal portion that seals the inner surfaces of the sheets to each other.

[0003] In the buffer component of this structure, the slits are opened when the packaged article is housed, and the entire body is three-dimensionally deformed by the softness of the front sheet portion and the back sheet portion made of the sheet of nonwoven fabric. At this time, the point seal portion maintains the degree of freedom of deformation, and maintains the desired state in which the front sheet portion and the back sheet portion overlap each other, and maintains the state of the packaged article housed between the expanded front sheet portion and the back sheet portion. Therefore, the packaged article, which is soft and easily damaged, can be used with peace of mind. Also, since the point seal portion is fixed, the degree of freedom of deformation based on the slits can be maintained, and the packaged article can also be prevented from falling unexpectedly.

[0004] However, when the packaged article is covered, the slits are opened, so although the contraction force acts on the buffer component, the contraction force thereof mainly depends on the material of the nonwoven fabric, and particularly for a packaged article having a recessed shape, the followability is sometimes not good.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2023-56718 SUMMARY

[0006] The main object of the utility model is to have good adhesion and to obtain better buffering effect.

[0007] The buffer component for this purpose constitutes a space for housing a packaged article using a front-back pair of sheet portions that overlap each other, and these sheet portions are made of a sheet of nonwoven fabric having slits that pass through in the thickness direction and are arranged in a staggered manner, and the buffer component has the following structure. At least either one of the sheet portions is constituted by a plurality of sheets that overlap each other. Also, the positions of the slits of the sheets that constitute the sheet portion are different from each other in the closed state of the slits. In other words, "the positions of the slits are different from each other in the closed state of the slits" means that the slits do not overlap each other but are offset in position between the sheets, unlike the case where the slits are formed in the state in which the sheets overlap each other.

[0008] In this structure, the slit opened by wrapping the package makes the sheet into a three-dimensional configuration, and the sheet itself has a cushioning function. The sheet portion configured by overlapping the sheet has a higher cushioning performance than a sheet portion configured by a single layer, i.e., one sheet. Moreover, the slits in the closed state are misaligned with each other between the sheets, and when opened and three-dimensionalized, the slits engage with each other to become a three-dimensional configuration having softness due to the nonwoven fabric and having strong adhesion and thickness, and the three-dimensional configuration exerts a shrinking force following the shape of the package to be wrapped to wrap the package to be wrapped.

[0009] According to the present application, since the three-dimensional configuration of the multiple sheets is intertwined with each other when the slits are opened and three-dimensionalized, the package to be wrapped can be protected based on softness and high cushioning performance, and the package to be wrapped can be wrapped with high conformability based on strong shrinking force. Moreover, since the sheet is made of nonwoven fabric, the softness is high, and the contact of the corners of the slits is soft. Furthermore, in addition to good cushioning performance and conformability, the sheet returns to its original shape after the slits are opened and engaged with each other, unlike the case of a sheet made of paper such as kraft paper. That is, a sheet made of paper becomes hard, and the intertwined portions do not easily return to their original shape when the slits are opened and the sheets are engaged with each other, but a sheet made of nonwoven fabric easily returns to its original shape and can be used again. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a partially cutaway front view of the cushioning member.

[0011] Figure 2 is a perspective view of the package to be wrapped and the cushioning member.

[0012] Figure 3 is an enlarged plan view of the sheet.

[0013] Figure 4 is a sectional view showing the slit interval of the cushioning member.

[0014] Figure 5 is a perspective view showing the folded-back shape of the cushioning member.

[0015] Figure 6 is a sectional view of the cushioning member wrapped around the package to be wrapped.

[0016] Figure 7 is a partially cutaway front view of the cushioning member of another example.

[0017] Figure 8 is a perspective view of the cushioning member of another example.

[0018] REFERENCE NUMERALS

[0019] 11: Buffer component; 12, 13: Opening; 14: Space; 15: Front sheet section; 16: Back sheet section; 17: Sheet; 18: Gap; 19: Gap row; 21: Joint; 22: End joint; X: Packaged item. Detailed Implementation

[0020] The following description uses the accompanying drawings to illustrate one method of implementing this utility model.

[0021] Figure 1 A partial sectional front view of the cushioning component 11, which can be used as a so-called fruit cover, is shown.

[0022] The buffer member 11 is formed as a flat cylindrical shape with openings 12 and 13 at both ends. Its main shape is square, specifically a slightly elongated rectangle, with openings 12 and 13 located at both ends along its length. Figure 1 In the middle, the upper opening 12 shown on the upper side is slightly wider than the lower opening 13.

[0023] like Figure 2 As shown, this type of cushioning member 11 uses overlapping front sheet portion 15 and back sheet portion 16 to form a space 14 for storing the packaged item X. The front sheet portion 15 and the back sheet portion 16 are each made of sheet 17.

[0024] The sheet 17 is made of a nonwoven fabric, such as spunbond nonwoven fabric or thermally bonded nonwoven fabric, and has a plurality of slits 18 extending along the thickness direction on its entire surface. The slits 18 are structures used to provide cushioning. That is, they are designed to open when the packaged item X is placed inside the cushioning member 11, thereby giving the sheet 17 a three-dimensional mesh-like structure. In this example, all the slits 18 are formed in a straight line and are arranged in an alternating pattern, extending in the same direction as the length of the slits 18. From a productivity point of view, the nonwoven fabric used is preferably spunbond nonwoven fabric.

[0025] Figure 3 A partially enlarged view of sheet 17 is shown. As shown in the figure, slits 18 are formed to a certain length L, and are equally spaced along the length of the slits 18 to form a row of slits 19. Multiple rows of slits 19 are provided, and the midpoints of the intervals between the slits 18 in these rows 19, i.e., the series intervals S, correspond to the midpoints along the length of the slits 18 in adjacent rows 19. The intervals between the slits 19, i.e., the side-by-side intervals W, are set in the same way as the series intervals S to achieve the desired three-dimensional shape.

[0026] At least either one of the sheet portions of the front sheet portion 15 and the back sheet portion 16 is constituted by overlapping a plurality of the above-described sheets 17. In this example, an example is shown in which both the front sheet portion 15 and the back sheet portion 16 are constituted by two sheets 17. That is, the front sheet portion 15 is constituted by the sheets 17a, 17b, and the back sheet portion 16 is constituted by the sheets 17c, 17d. Also, as shown in Figure 1 the position of the slits 18 of the sheets 17 that constitute the sheet portions, that is, the front sheet portion 15 and the back sheet portion 16, are made to be different from each other in the closed state of the slits 18.

[0027] Specifically, for example, the parallel arrangement interval W of the slit rows 19 is made to be different in the sheets 17 that overlap each other in the sheet portions 15, 16 constituted by a plurality of the sheets 17. As an example, as shown in Figure 4 cross-sectional view (a), the parallel arrangement interval Wl of the slit rows 19 in one of the sheets 17 that constitute the sheet portions 15, 16 is made different from the parallel arrangement interval W2 of the slit rows 19 in the other sheet 17. In the drawing, the sheet 17 depicted on the upper side makes the parallel arrangement interval Wl wide. As shown in cross-sectional view (b), by making the parallel arrangement interval W3 of the slit rows 19 in the sheets 17 that constitute the sheet portions 15, 16 the same and making the positions of the slit rows 19 staggered in the parallel direction, it is also possible to make the slits 18 different. If the slit rows 19 are thus made to be staggered in the parallel direction, the sheets 17 that are stereoscopic are easily entangled with each other, which is preferable in this respect.

[0028] Although illustration is omitted, it is also possible to make the positions of the slits 18 different between the sheets 17 by making the positions in the length direction of the slit rows 19 different, or changing the length L of the slits 18, the series arrangement interval S of the slits 18.

[0029] Between the overlapping sheets 17, as shown in Figure 1 the positions of the slits 18 are made different by being staggered in the closed state of the slits 18, but the form is various as described above. Therefore, the portions in which the slits 18 are different from each other between the sheets 17 sometimes extend over the entire surface of the sheets 17, and sometimes remain in a portion. That is, the positions of the slits 18 can also be different locally.

[0030] In addition, with respect to the sheets 17 that constitute the front sheet portion 15 and the back sheet portion 16, the sheets 17 that are located on the inner side and overlap each other (17b, 17c), the positions of the slits 18 can be different from each other in the closed state of the slits, or can be the same.

[0031] The front sheet portion 15 and back sheet portion 16 of two different sheets 17, with this gap 18, are integrated by a joint 21 formed on the left and right side edges, forming the aforementioned flat cylindrical shape. The joint 21 can be formed by ultrasonic welding. Figure 1 In the example shown, multiple square-shaped weld points 21a are arranged in a line to form joints 21. The two joints 21 are parallel.

[0032] In addition to the joint 21, an end joint 22 is also formed. As described above, the width of the opening 13 at the lower end is slightly narrowed, and the end joint 22 is formed near the lower end of one end of the joint 21 in the longitudinal direction on both the left and right sides, and is located inside the joint 21. The end joint 22 is formed by ultrasonic welding, just like the joint 21.

[0033] Figure 1 The end joint 22, as illustrated, is configured with a plurality of dot-shaped welding points 22a, forming a line that slopes inward from the left and right ends. In other words, it is a line that slopes inward towards the lower end, resembling an inverted "ハ" shape. The angle between the end joint 22 and the joint 21 can be approximately 150 degrees.

[0034] The above structure is one way to implement this utility model. This utility model is not limited to the above structure, and other structures can also be used.

[0035] For example, such as Figure 7 As shown, the colors of the overlapping sheets 17 can also be different. Based on the illustration, the color difference is represented by the difference in the shape of the dots and the presence or absence of the dots. The color of the inner sheet 17 seen when the slit 18 is opened, and the color of the inner sheet 17 exposed when the upper opening side is folded back, make the appearance beautiful, and the color matching can also improve the visual effect on the packaged item X.

[0036] In addition, such as Figure 8 As shown, the end joint 22 can also be formed by a dotted dot seal.

[0037] In addition to being formed into a line shape by providing a dotted ultrasonic welding part, the joint 21 and the end joint 22 can also be formed by an ultrasonic welding part that includes a line.

[0038] The buffer component 11, constructed as described above, flows in a flat, sheet-like form and is stretched during use, such as... Figure 2 As shown, the space 14 between the front sheet portion 15 and the back sheet portion 16 is used to store packaged items such as peaches.

[0039] When the cushion member 11 is wrapped around the wrapped article X, as necessary, as shown in FIG. 10B, the portion of the upper end having no end joint 22 is folded back to the outside to coincide with the portion of the lower end. At this time, the end joint 22 maintains the left and right sides, so that deformation of the opening 13 at the lower end and displacement between the sheets 17 can be prevented. Thus, neat folding work can be performed simply and quickly. Figure 5

[0040] Figure 6 A cross-sectional view of the wrapped state is shown. That is, if the wrapped article X is wrapped, the stretchable cushion member 11 is quickly straightened to open the slit 18. Then, the portion surrounding the slit 18 is inclined to stand, and a three-dimensional structure like a honeycomb can be formed. That is, the thin sheet-like sheet 17 is three-dimensionalized to increase the thickness, and a cushioning effect is exerted.

[0041] Further, since the sheet portions 15, 16 are formed by superimposing two such sheets 17, a good cushioning effect can be exerted.

[0042] Further, the position of the closed slit 18 is shifted between the superimposed sheets 17, so that, as shown in Figure 6 enlarged, the sheets 17 are entangled with each other, and the thickness and elasticity are increased. Thus, a better cushioning effect is exerted.

[0043] With such a good cushioning effect, the sheets 17 which are three-dimensionalized and entangled with each other also exert a strong contraction force, that is, a force to close the slit 18 and contract. Thus, the shape of the wrapped article X is followed well, and wrapping with high adhesion can be performed. Although the contraction force is high, the softness of the sheet 17 formed of nonwoven fabric is also high, so that even if the wrapped article X is a delicate wrapped article like a peach, the wrapped article can be prevented from being damaged by the corners of the slit 18. Since wrapping with good stretchability, thickness, and high followability can be performed, even for a delicate wrapped article X like a grape which has a complex shape and is easily detached from the cluster, good cushioning can be performed.

[0044] In particular, since the softness of the cushion member 11 is higher than that of kraft paper, even for a delicate fruit like a peach which is difficult to use in a fruit cover formed of kraft paper, the fruit can be used with peace of mind. Nonwoven fabric having a basis weight of 30 gsm to 100 gsm is preferably used as the cushion member 11 for use with a delicate fruit like a peach, and effective softness can be obtained.

[0045] ​In the case where the front sheet portion 15 and the back sheet portion 16 are folded back to be covered, the thickness is further increased, so that the cushioning function can be improved. Therefore, according to the use, even in the case where either one of the front sheet portion 15 and the back sheet portion 16 is constituted by one sheet 17, the sufficient function as the cushioning member 11 can be exerted.

Claims

1. A cushioning component comprising a space for receiving packaged items using overlapping front and back sheet portions, these sheet portions being made of non-woven fabric having through-slits arranged in a staggered pattern along their thickness direction, characterized in that, At least one of the sheet portions is composed of a plurality of overlapping sheets. The positions of the gaps between the sheets in the sheet portion composed of multiple sheets are inconsistent when the gaps are closed.

2. The buffer component according to claim 1, characterized in that, The parallel spacing of a slit column consisting of multiple slits arranged along the length of the slit varies between overlapping sheets in the sheet portion consisting of multiple sheets.

3. The buffer component according to claim 1 or 2, characterized in that, The buffer member has joints on the left and right sides that join the front and back sheet portions together, and the buffer member has end joints that narrow the width of the opening, the end joints being formed near one end of these joints in the length direction.

4. The buffer component according to claim 3, characterized in that, The end joint is formed as a line that slopes inward from the left and right ends.

5. The buffer component according to claim 1 or 2, characterized in that, Both the front and back sheets are composed of two sheets.

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