JP7124405B2 - packaging material - Google Patents

Description

The present invention relates to packaging materials.

Patent Literature 1 listed below discloses a packaging device for packaging straight tube lamps. The packaging device includes a main body protecting portion that covers the tube portion of the straight tube lamp, and a terminal protecting portion that protects the terminal portions projecting from both ends of the tube portion. The terminal protection portion is formed by a bent piece obtained by bending cardboard.

JP 2012-41079 A

When a packaging material containing a long product such as a straight tube lamp is carried vertically, it may be accidentally dropped. In that case, the longitudinal ends of the wrapping hit the ground. A long product has a corresponding weight. On the other hand, the area of the ends of the packaging material in the longitudinal direction is small. Therefore, when the ends of the packaging material dropped along the longitudinal direction collide with the ground, the ends of the packaging material receive a large impact. In the invention of Patent Document 1, when such a large impact is applied, the terminal protection portion is greatly deformed, and there is a possibility that the end portion of the straight tube lamp collides with the ground and is damaged. In order to prevent such damage, the length of the terminal protection portion in the longitudinal direction must be sufficiently long, which has the disadvantage of increasing the size of the packaging material.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact packaging material capable of reliably protecting the ends of an object having a longitudinal direction from impacts.

A packaging material according to the present invention is a packaging material formed of a sheet for packaging an object having a longitudinal direction, and includes a cushioning portion formed by folding the sheet, and the cushioning portion is an end portion of the object. In a cross-section perpendicular to the longitudinal direction, the cushioning portion has a parallel portion parallel to the contour line inside the contour of the end of the object.

A packaging material according to the present invention is a packaging material formed of a sheet for packaging an object having a longitudinal direction, and includes a cushioning portion formed by folding the sheet, and the cushioning portion is an end portion of the object. In a cross-section perpendicular to the longitudinal direction, the cushioning portion has a parallel portion parallel to the contour line inside the contour of the end of the object, and in the cross-section, the cushioning portion , with polygonal contours .
In addition, a packaging material according to the present invention is a packaging material formed of a sheet for packaging an object having a longitudinal direction, and is provided with a cushioning portion formed by folding the sheet, wherein the cushioning portion is a In a cross-section perpendicular to the longitudinal direction having an end surface contacting the end, the buffer has a parallel portion parallel to the contour line inside the contour of the end of the object, and in cross-section the buffer The entire part is inside the edge contour of the object.
In addition, a packaging material according to the present invention is a packaging material formed of a sheet for packaging an object having a longitudinal direction, and is provided with a cushioning portion formed by folding the sheet, wherein the cushioning portion is a In a cross-section perpendicular to the longitudinal direction and having an end face in contact with the end, the buffer has a parallel portion inside the contour of the end of the object and parallel to the line of the contour, A portion other than the parallel portion is a non-parallel portion, and in cross section, the total length of the parallel portion is longer than the total length of the non-parallel portion.

1 is a perspective view showing a packaging material and a product according to Embodiment 1; FIG. 2 is an enlarged perspective view of a part of the packaging material in FIG. 1; FIG. FIG. 4 is a perspective view for explaining a procedure for assembling the packaging material according to Embodiment 1; FIG. 4 is a perspective view for explaining a procedure for assembling the packaging material according to Embodiment 1; FIG. 4 is a perspective view for explaining a procedure for assembling the packaging material according to Embodiment 1; It is the figure which looked at the product in FIG. 1 from the direction parallel to the longitudinal direction. FIG. 4 is a cross-sectional view of the assembled packaging material according to Embodiment 1, taken along a plane perpendicular to the longitudinal direction and cut at the position of the cushioning portion;

Embodiments will be described below with reference to the drawings. Elements that are common or correspond to each figure are denoted by the same reference numerals, and overlapping descriptions are simplified or omitted.

Embodiment 1.
FIG. 1 is a perspective view showing a packaging material 2 and a product 1 according to Embodiment 1. FIG. A product 1 corresponds to an object to be packaged with a packaging material 2 . The product 1 in this embodiment is a lighting fixture. The product 1 has an elongated shape, ie an elongated shape. The contour of the cross section of the product 1 cut along a plane perpendicular to the longitudinal direction of the product 1 is a shape close to a trapezoid.

The packaging material 2 is formed of a sheet. The sheet forming the packaging material 2 may be, for example, cardboard made of paper or plastic. In this embodiment, the packaging material 2 is made of one cardboard sheet. FIG. 1 shows the unfolded state of the packaging material 2, that is, the state before packaging the product 1 with the packaging material 2. As shown in FIG. The packaging material 2 has a rectangular base portion 3 . A product 1 is placed on the base portion 3 .

In the following description, simply describing the "longitudinal direction" means the longitudinal direction of the product 1 and the base portion 3 unless otherwise specified. Further, in the following description, a direction perpendicular to the longitudinal direction and parallel to the base portion 3 is referred to as a "transverse direction". The flute grooves of the corrugated cardboard sheet forming the packaging material 2 are parallel to the longitudinal direction.

The shape of the packaging material 2 in this embodiment is symmetrical about the center in the longitudinal direction. Therefore, only one longitudinal side of the packaging material 2 will be described below. Moreover, the shape of the packaging material 2 in the present embodiment is symmetrical about the center in the lateral direction. Therefore, only one lateral side of the packaging material 2 will be described below.

FIG. 2 is an enlarged perspective view of a part of the packaging material 2 in FIG. The packaging material 2 further comprises a side portion 4 and a top portion 5 . The side portion 4 is connected to the long side of the base portion 3 via a ruled line 100 . The upper surface portion 5 is connected via a ruled line 101 to the long side of the side surface portion 4 opposite to the ruled line 100 . The dimension of the short side of the upper surface portion 5 is approximately half the dimension of the short side of the base portion 3 .

The packaging material 2 further includes vertical wall portions 10 , buffer portions 11 a , 11 b , 11 c and 11 d , protective portions 20 and support pieces 21 . The vertical wall portion 10 is connected to the short sides of the base portion 3 via ruled lines 102 . The protective portion 20 is connected via a ruled line 103 to the side of the vertical wall portion 10 opposite to the ruled line 102 . Ruled line 103 is shorter than ruled line 102 . The buffer portion 11a is connected to the protection portion 20 via a ruled line 104a. The buffer portion 11b is connected via a ruled line 104b to the side of the buffer portion 11a opposite to the ruled line 104a. The buffer portion 11c is connected via a ruled line 104c to the side of the buffer portion 11b opposite to the ruled line 104b. The buffer portion 11d is connected to the side of the buffer portion 11c opposite to the ruled line 104c via the ruled line 104d. Ruled lines 104a, 104b, 104c, and 104d are parallel to the longitudinal direction.

A support piece 21 is connected via a ruled line 105 to a portion of the short side of the protective portion 20 where the ruled line 104a is not formed. The buffer portions 11a, 11b, 11c, 11d and the support pieces 21 are provided on both sides so as to be symmetrical with respect to the center in the lateral direction.

The vertical wall portion 10 and the buffer portions 11a and 11b are separated by a notch 106 parallel to the lateral direction. The cushioning portions 11a, 11b, 11c, the protection portion 20, and the support piece 21 are separated by a notch 107 parallel to the lateral direction.

3, 4, and 5 are perspective views for explaining the procedure for assembling the packaging material 2 according to Embodiment 1. FIG. The procedure for assembling the packaging material 2 will be described below with reference to these figures. First, the product 1 is placed on the base portion 3, the ruled line 100 is bent, and the side portion 4 is raised. At this time, as a mark of the position where the product 1 is to be placed, it is preferable to provide a mark on the base portion 3 by a ruled line or by printing.

Next, the ruled line 102 is folded, and the vertical wall portion 10 is erected. Next, the ruled line 103 is folded so that the protective portion 20 is along the upper surface of the product 1 . Next, the ruled line 105 is bent so that the supporting piece 21 is perpendicular to the base portion 3 and the protective portion 20 . Next, the ruled line 104a is bent so that the cushioning portion 11a is perpendicular to the base portion 3 and the protective portion 20. As shown in FIG. Next, the ruled line 104b is folded in the direction opposite to the direction in which the ruled line 104a is folded. FIG. 3 shows the state assembled so far. In FIG. 3, the illustration of the product 1, the side surface portion 4, and the upper surface portion 5 is omitted for the sake of clarity.

When the ruled lines 104c and 104d are bent in the direction opposite to the direction in which the ruled line 104a is folded from the state shown in FIG. 3, the state shown in FIG. 4 is obtained. In FIG. 4, for the sake of clarity, illustration of part of the vertical wall portion 10, the side surface portion 4, and the upper surface portion 5 is omitted.

Finally, as shown in FIG. 5, the ruled line 101 is folded so that the upper surface portion 5 covers the upper surface of the product 1 . The entire upper surface of the product 1 is covered with the pair of upper surface portions 5 . The assembly of the packaging material 2 is completed by fixing the joint between the pair of upper surface portions 5 with tape or the like.

FIG. 6 is a view of the product 1 in FIG. 1 viewed from a direction parallel to the longitudinal direction. As shown in FIG. 6, product 1 has a product end surface 6 . The product end surface 6 corresponds to the longitudinal end of the product 1 . The shape of the contour of the product end surface 6 in the present embodiment is a hexagon that is close to a trapezoid. At least part of the product end face 6 is a plane perpendicular to the longitudinal direction. A central portion of the product end surface 6 becomes a low-strength portion 7 having a lower strength than other portions of the product end surface 6 . In FIG. 6, the low-strength portion 7 is hatched with oblique lines for the sake of clarity. This hatching does not indicate a cross section.

The product 1 has an outer wall extending from the contour of the product end face 6 in a direction perpendicular to the page of FIG. When an external force is applied to the product end surface 6, the outer wall receives the external force. A position close to the contour of the product end surface 6 is close to the outer wall, so the strength against external force is relatively high. On the other hand, since the low-strength portion 7 is distant from the outer wall portion, the strength against external force is relatively low. It can be said that the strength of the product end surface 6 against external force is higher at positions closer to the contour.

In this embodiment, the contour of the product end face 6 has a symmetrical shape with respect to the center in the transverse direction. The contour line of the product end face 6 has a first portion 8 , a second portion 9 , a third portion 12 and a fourth portion 13 . The first portion 8 and the third portion 12 are parallel to the transverse direction. When the packaging material 2 is assembled, the first portion 8 is in contact with the base portion 3 and the third portion 12 is in contact with the protective portion 20 . The second portion 9 and the fourth portion 13 are formed on both sides of the center in the transverse direction. The fourth portion 13 extends from both ends of the first portion 8 in a direction perpendicular to the first portion 8 . The second portion 9 is inclined with respect to the first portion 8 and the third portion 12 . The second portion 9 connects between the end of the third portion 12 and the end of the fourth portion 13 . The first portion 8 corresponds to a portion extending along the first direction. The second portion 9 corresponds to a portion extending along a second direction different from the first direction.

FIG. 7 is a cross-sectional view taken along a plane perpendicular to the longitudinal direction and cut at the positions of the buffer portions 11a, 11b, 11c, and 11d in the assembled state of the packaging material 2 according to Embodiment 1. FIG. In FIG. 7, illustration of the base portion 3, the side surface portion 4, and the upper surface portion 5 is omitted.

As shown in FIG. 7, when the packaging material 2 is assembled, it is as follows. The cushioning portion 11 a is perpendicular to the base portion 3 and the protection portion 20 . The buffer portion 11b overlaps the base portion 3 in parallel. The buffer portion 11 c is oblique with respect to the base portion 3 and the protection portion 20 . The position of the ruled line 104d is almost the same as the position of the ruled line 104a. The buffer portion 11d is in parallel contact with the buffer portion 11a. The buffer portion 11d entirely overlaps the buffer portion 11a.

The cushioning portions 11 a , 11 b , 11 c , 11 d are arranged between the product end surface 6 and the vertical wall portion 10 . One end surface of each of the cushioning portions 11a, 11b, 11c, and 11d is in contact with the product end surface 6. As shown in FIG. The other end surfaces of the buffer portions 11 a , 11 b , 11 c and 11 d are in contact with the vertical wall portion 10 . Each surface of the buffer portions 11a, 11b, 11c, and 11d is parallel to the longitudinal direction.

In FIG. 7, the buffer portion 11b corresponds to a parallel portion parallel to the first portion 8 inside the contour of the product end face 6, and the buffer portion 11c corresponds to the second portion 9 inside the contour of the product end face 6. corresponds to a parallel part parallel to .

When the packaging material 2 containing the product 1 is carried vertically, it may be accidentally dropped. In that case: A vertical wall portion 10 corresponding to a longitudinal end portion of the packaging material 2 collides with the ground. The elongated product 1 has a corresponding weight. On the other hand, the vertical wall portion 10 of the packaging material 2 has a small area. Therefore, when the vertical wall portion 10 of the packaging material 2 dropped along the longitudinal direction collides with the ground, a large impact is applied to the vertical wall portion 10 of the packaging material 2 . The cushioning portions 11a, 11b, 11c, and 11d are compressed between the product end face 6 and the vertical wall portion 10 and deformed. The product 1 can be reliably protected by the cushioning portions 11a, 11b, 11c, and 11d absorbing the impact.

A portion near the first portion 8 and the second portion 9 corresponding to the contour line of the product end face 6 has high strength among the product end faces 6 . According to the present embodiment, by providing the buffer portions 11b and 11c parallel to the first portion 8 and the second portion 9, the impact at the time of dropping can be more reliably absorbed. Therefore, the product 1 can be protected more reliably. Even if the dimension in the longitudinal direction of the buffer portions 11a, 11b, 11c, and 11d is not so large, the impact at the time of dropping can be sufficiently absorbed. Therefore, the present embodiment is advantageous in making the dimensions of the packaging material 2 in the longitudinal direction compact.

In the present embodiment, buffer portion 11b corresponds to a first parallel portion parallel to first portion 8 extending along the first direction, and buffer portion 11c extends along a second direction different from the first direction. It corresponds to a second parallel portion parallel to the second portion 9 . According to the present embodiment, the provision of the first parallel portion and the second parallel portion makes it possible to exhibit the above-described effects more remarkably.

Portions other than the parallel portions of the buffer portions 11a, 11b, 11c, and 11d are referred to as "non-parallel portions." The buffer portions 11a and 11d correspond to non-parallel portions. In FIG. 7, the total lengths of the buffer portions 11b and 11c corresponding to the parallel portions are longer than the total lengths of the buffer portions 11a and 11d corresponding to the non-parallel portions. In this way, when the total length of the parallel portion is longer than the total length of the non-parallel portion, it is possible to exhibit the above-described effects more remarkably.

In FIG. 7, of the outline of the product end face 6, the cushioning portion 11b is parallel to more than half of the first portion 8, and the cushioning portion 11c is parallel to almost the entire second portion 9. . In this embodiment, the cushioning portion 11b and the cushioning portion 11c corresponding to the parallel portion are parallel to each other over 50% or more of the total length of the contour of the product end surface 6. As shown in FIG. According to such a configuration, the area of the high-strength portion of the product end surface 6 can be utilized more to absorb the impact, so that the above-described effects can be exhibited more remarkably.

In this embodiment, the cushioning portion 11b extends parallel to the first portion 8, while the cushioning portion 11c is slightly oblique to the second portion 9. As shown in FIG. Like this cushioning portion 11c, the parallel portion may not be completely parallel to the contour line of the product end surface 6. FIG. The angle α in FIG. 7 is the angle (minor angle) between the buffer portion 11 c and the second portion 9 , and corresponds to the angle between the parallel portion and the contour line of the product end surface 6 . The angle α between the parallel portion and the contour line of the product end face 6 is preferably 30° or less, more preferably 20° or less, and even more preferably 10° or less. If at least one of the parallel portion and the contour line of the product end surface 6 is a curved line, the angle α can be calculated as the angle of the tangential line between them.

It is considered that the strength of the product end face 6 decreases as the distance from the contour line increases. Therefore, when viewed as shown in FIG. 7, it is desirable that the distance between the parallel portion and the contour line of the product end surface 6 is as small as possible. From this point of view, the distance between the center of the thickness of the parallel portion and the contour line of the product end surface 6 is preferably 20 mm or less, more preferably 10 mm or less.

In the present embodiment, in FIG. 7, buffer portions 11a, 11b, 11c, and 11d have a triangular outline as a whole. This is more advantageous in increasing the strength of the buffer portions 11a, 11b, 11c, and 11d as a whole. As a modification, even if the cushioning portions 11a, 11b, 11c, and 11d as a whole have polygonal outlines other than triangles, similar effects can be obtained.

In this embodiment, the cushioning portions 11a, 11b, 11c, and 11d are arranged so as not to come into contact with the low-strength portion 7 of the product end face 6. As shown in FIG. As a result, it is possible to prevent the low-strength portion 7 from being subjected to an impact when the product 1 is dropped, so that damage to the product 1 can be prevented more reliably.

In this embodiment, the corrugated cardboard flute grooves forming the cushioning portions 11a, 11b, 11c, 11d extend along the longitudinal direction. The strength of corrugated board against compression in the plane direction is higher in the direction parallel to the flute grooves than in the direction perpendicular to the flute grooves. In the present embodiment, a load acts on the shock-absorbing portions 11a, 11b, 11c, and 11d from a direction parallel to the grooves of the flutes when dropped. Therefore, the strength of the buffer portions 11a, 11b, 11c, and 11d is increased, and the impact can be absorbed more reliably.

In FIG. 7, all of the buffers 11a, 11b, 11c, 11d are inside the contour of the end face 6 of the product. As a result, there is an advantage that the entire buffering portions 11a, 11b, 11c, and 11d reliably exhibit a buffering effect when dropped. If part of the cushioning portions 11a, 11b, 11c, and 11d is outside the contour of the product end face 6, the cushioning effect as a whole may be reduced because the portion outside the contour does not exhibit a sufficient cushioning effect. have a nature.

A corrugated cardboard sheet exerts a force to return in a direction opposite to the direction in which it was folded. In the present embodiment, the cushioning portion 11d is formed at a position in contact with the cushioning portion 11a in parallel, so that the cushioning portion 11a suppresses the force of the cushioning portion 11d returning in the direction opposite to the bending direction. Therefore, it is possible to maintain the triangular structure of the cushioning portions 11a, 11b, 11c, and 11d without using fixing means such as adhesion.

In the present embodiment, two groups of cushioning portions including cushioning portions 11a, 11b, 11c, and 11d are arranged for one product end surface 6 of the product 1. As shown in FIG. Instead of such a configuration, a configuration may be adopted in which a pair of cushioning portions are arranged for one product end surface 6 of the product 1 . In that case, the shape of the pair of cushioning portions should be a similar shape that is slightly smaller than the contour of the end face 6 of the product. For example, when the contour of the product end surface 6 is a hexagon that is close to a trapezoid as in the present embodiment, the shape of the pair of cushioning portions may be a trapezoid or a hexagon that is close to a trapezoid. In the present embodiment, the cushioning portions 11a, 11b, 11c, and 11d are formed by folding the ruled lines 104a, 104b, 104c, and 104d. You may

As shown in FIG. 4, the protection part 20 covers the upper surface of the part near the end of the product 1 . The support piece 21 covers the side surface of the product 1 near the end. In the present embodiment, the protection portion 20 and the support piece 21 are provided, so that the following effects can be obtained. If the packaging material 2 containing the product 1 is dropped in a direction other than the longitudinal direction, for example, even if it is dropped with the side part 4 or the top part 5 facing down, at least one of the protection part 20 and the support piece 21 It can act as a cushioning material and protect the product 1 from impact.

1 product 2 packaging material 3 base portion 4 side portion 5 upper surface portion 6 product end surface 7 low strength portion 8 first portion 9 second portion 10 vertical wall portion 11a, 11b, 11c, 11d buffer Part 12 Third Part 13 Fourth Part 20 Protection Part 21 Support Piece 100, 101, 102, 103, 104a, 104b, 104c, 104d, 105 Ruled Line

Claims (8)

A packaging material formed by a sheet for packaging an object having a longitudinal direction,
A cushioning portion formed by bending the sheet,
The buffer part has an end face that contacts an end of the object,
In a cross section perpendicular to the longitudinal direction, the cushioning portion has a parallel portion parallel to the line of the contour inside the contour of the end of the object ,
The packaging material having a polygonal outline in the cross section. A packaging material formed by a sheet for packaging an object having a longitudinal direction,
A cushioning portion formed by bending the sheet,
The buffer part has an end face that contacts an end of the object,
In a cross section perpendicular to the longitudinal direction, the cushioning portion has a parallel portion parallel to the line of the contour inside the contour of the end of the object ,
In said cross-section, the packaging material wherein the entirety of said buffer is inside said contour of said end of said object. A packaging material formed by a sheet for packaging an object having a longitudinal direction,
A cushioning portion formed by bending the sheet,
The buffer part has an end face that contacts an end of the object,
In a cross section perpendicular to the longitudinal direction, the cushioning portion has a parallel portion parallel to the line of the contour inside the contour of the end of the object ,
A portion of the buffer portion other than the parallel portion is a non-parallel portion,
In the cross section, the total length of the parallel portion is longer than the total length of the non-parallel portion. 4. The packaging material according to claim 2 or 3 , wherein the cushioning portion has a triangular contour in the cross section. 5. The packaging material according to any one of claims 1 to 4 , wherein the corrugated cardboard flute grooves corresponding to the sheet forming the buffer portion extend along the longitudinal direction. the contour of the edge of the object has a first portion extending along a first direction and a second portion extending along a second direction different from the first direction;
The packaging material according to any one of claims 1 to 5, wherein the parallel portion has a first parallel portion parallel to the first portion and a second parallel portion parallel to the second portion. 7. The packaging material according to any one of claims 1 to 6 , wherein in the cross section, the parallel portion is parallel to 50% or more of the total length of the contour of the edge of the object. . The packaging material according to any one of claims 1 to 7 , wherein the object is a lighting fixture.

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