JP2003072848A - Cushioning sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushioning sheet which has a high cushioning function, and at the same time, can be easily cut at an optional size, also can be easily discarded, and can be manufactured at a low cost as well. SOLUTION: For this cushioning sheet l, regular hexagonal cell sections 10 are connected with each other by the edges, and present an approximate honeycomb shape when seen on the plan. At the same time, a connecting section 2b wherein a cut 2a is not applied is provided at one section on respective edges of the regular hexagonal cell sections 10. By the connecting section 2b, respective regular hexagonal cell sections 10 are bendably connected with other regular hexagonal cell sections 10 each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cardboard cushioning packaging sheet, and more particularly to a cardboard cushioning packaging sheet used when packaging articles.

[0002]

2. Description of the Related Art In recent years, cushioning packaging sheets have been used to protect packaged articles during packaging such as shipping and transportation. The cushioning packaging sheet is wrapped in a packaged article and accommodated in a storage box or a case, so that a useless space in the storage box is filled with a cardboard cushioning packaging sheet to enhance the restraint of the packaged article. Prevents rattling of packaged items inside and absorbs vibrations and impacts received during the transportation and handling of storage boxes to reduce the input of vibrations and impacts to the packaged items to protect them. It is used to

In this case, since the cushioning packaging sheet needs to fit the shape of the packaged article without difficulty, the flexibility of the sheet itself is required in addition to the cushioning property. Also,
Specific examples of the buffer packaging sheet include urethane foam, rubber sheet, pulp molding, and air-filled vinyl foam.

[0004]

However, in such a flat buffer packaging sheet such as a urethane foam or a rubber sheet, since the shape is flat, the buffer capacity is only the thickness of the sheet, so that a high cushion is required. In order to obtain the property, it was necessary to increase the thickness or to wrap it in multiple layers. Therefore, there is a problem that the weight increases and the cost increases.

Further, since the required amount of the cushioning packaging sheet differs for each packaged article, if the cushioning packaging sheet is cut into a predetermined size in advance, the cushioning packaging sheet may be insufficient or the usage amount becomes larger than necessary depending on the packaging article. It was of low versatility. Further, in the case of using pulp molding, a new problem arises that a dedicated mold forming step is required and the cost is high. Also, in the case of using the air-filled vinyl foam, the buffer capacity is larger than that of the flat plate by the amount of the enclosed air, but it is difficult to recycle and a new problem in waste treatment occurs. Met.

Therefore, the present invention provides a cushioning sheet which has a high cushioning function and can be easily cut into an arbitrary size, and can be easily discarded and manufactured at low cost. The purpose is to provide a possible cushioning sheet.

[0007]

The present invention was created to solve the above problems. First, a cushioning sheet is provided by arranging a plurality of cuts having the same shape. A plurality of unit cell parts having the same shape are connected to each other through a connecting part.

In the buffer sheet having the first structure,
Since the unit cell portion can be bent freely by the connecting portion, it becomes possible to package and use the article to be protected. Also, when the buffer sheet is wrapped in a packaged article, the unit cell portion and another adjacent unit cell portion are bent, and the end portion of the unit cell portion projects outward and floats. Therefore, since the protruding end portion increases the buffer capacity when the packaged article is wrapped, it is possible to obtain high restraint and cushioning property of the packaged article. Also,
Since the buffer sheet is connected to the adjacent unit cell portion only by the connecting portion, if the buffer sheet is formed of a material that can be cut into pieces such as paper material, the connecting portion is cut into pieces by hand. By doing so, the buffer sheet can be easily divided. Therefore, even if you do not use cutters or scissors, you can cut the required amount according to the packaged item by hand and adjust the size each time. It is possible to obtain high versatility without increasing the usage amount.

Secondly, the buffer sheet is a unit cell portion having the same shape, and a polygonal unit cell portion is connected through a connecting portion by arranging a plurality of radial cuts. It is characterized by being installed in series.

In the buffer sheet having the second structure,
Since the unit cell portion can be bent freely by the connecting portion, it becomes possible to package and use the article to be protected. Also, when the buffer sheet is wrapped in a packaged article, the unit cell portion and another adjacent unit cell portion are bent, and the end portion of the unit cell portion projects outward and floats. Therefore, since the protruding end portion increases the buffer capacity when the packaged article is wrapped, it is possible to obtain high restraint and cushioning property of the packaged article. Also,
Since the buffer sheet is connected to the adjacent unit cell portion only by the connecting portion, if the buffer sheet is formed of a material that can be cut into pieces such as paper material, the connecting portion is cut into pieces by hand. By doing so, the buffer sheet can be easily divided. Therefore, even if you do not use cutters or scissors, you can cut the required amount according to the packaged item by hand and adjust the size each time. It is possible to obtain high versatility without increasing the usage amount.

Thirdly, in the first or second configuration, the unit cell portion is a regular hexagon. Therefore, since the unit cell portion is a regular hexagonal cell portion, the regular hexagonal cell portion can be arranged without a gap as a honeycomb shape, and up and down, left and right, since a connecting portion can be formed in an oblique direction, up and down, It is possible to easily bend in the left and right directions and in the diagonal direction.

Fourthly, in the third structure, the notch is formed by a notch line radially extending at an angle of 120 degrees.

Fifth, in the first or second configuration, the unit cell portion is an equilateral triangle.

A sixth feature is that, in the fifth structure, the notch is composed of six radially extending notch lines.

Seventhly, in the first or second configuration, the unit cell portion is square.

Eighthly, in the seventh structure, the notch is formed by a T-shaped or cross-shaped notch line.

Ninth, in the first or second configuration, the unit cell portion is a regular octagon, and the space surrounded by the regular octagonal unit cell portion has a square cell portion. Is provided.

The tenth feature is that, in the ninth structure, the notch is Y-shaped.

Eleventh, in any one of the first to tenth configurations, the buffer sheet is formed of a corrugated board material. Therefore, by forming the cushioning sheet from a corrugated board material, the cushioning function can be further improved, and the cushioning sheet can be easily shredded. Further, it can be easily discarded and can be manufactured at low cost.

Twelfth is a cushioning sheet made of corrugated cardboard material, in which a regular hexagon is provided without a gap, the notch having a score line extending radially at an angle of 120 degrees. The center of the cut is located at the position of each corner of the regular hexagon, and each cut line in the cut is arranged on each side of the regular hexagon so that the regular hexagon It is characterized in that a plurality of unit cell portions are arranged in series, and adjacent unit cell portions are connected at the central portion of each side.

In the cushioning sheet having the twelfth structure, the unit cell portion can be bent by the connecting portion, so that the article to be protected can be packaged and used. Also, when the buffer sheet is wrapped in a packaged article, the unit cell portion and another adjacent unit cell portion are bent, and the end portion of the unit cell portion projects outward and floats. Therefore, since the protruding end portion increases the buffer capacity when the packaged article is wrapped, it is possible to obtain high restraint and cushioning property of the packaged article. Further, since the buffer sheet is connected to the adjacent unit cell portion only by the connecting portion, the buffer sheet can be easily divided by manually cutting the connecting portion. Therefore, even if you do not use cutters or scissors, you can cut the required amount according to the packaged item by hand and adjust the size each time. It is possible to obtain high versatility without increasing the usage amount. Further, since the cushioning sheet is made of corrugated cardboard material, the cushioning function can be further improved, and the cushioning sheet can be easily shredded. Further, it can be easily discarded and can be manufactured at low cost.

Thirteenth, in the above-mentioned third, fourth or twelfth structure, each regular hexagonal cell portion is characterized in that the width between two opposite sides is 25 mm to 35 mm. Therefore, in each regular hexagonal cell portion, since the width between the two opposite sides is 25 mm to 35 mm, when packaging small accessory articles such as general tableware and daily necessities,
Since the distribution intervals of the regular hexagonal cell parts on the surface of the packaged article are appropriate distribution intervals, it is possible to obtain sufficient restraint and cushioning properties while ensuring the wrapping property of the packaged article.

In the fourteenth aspect, in any one of the first to thirteenth aspects, the buffer sheet has a wave height of about 0.6 mm and the number of peaks per 30 cm is 175 ± 5 peaks. It is formed of a corrugated cardboard sheet base material having a core. Therefore, because it is ultra-thin, it has excellent storability, is lightweight, and can be processed precisely, and since it has many peaks per unit length, it is possible to obtain sufficient strength even when using thin paper. Become.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. First, the first embodiment of the present invention will be described. A buffer packaging sheet (buffer sheet) 1 based on the first embodiment of the present invention has a large number of regular cells of the same shape as a unit cell portion as shown in FIG. The prismatic cell portion 10 is formed and is an assembly of the regular hexagonal cell portion 10. Further, since the regular hexagonal cell portion 10 is connected to the other regular hexagonal cell portion 10 at each side without any gap, the cushioning packaging sheet 1 has a substantially honeycomb shape in plan view.

Further, the regular hexagonal cell portion 10 is made of corrugated cardboard, and as shown in FIG.
It is formed by punching or the like and inserting notches 2a extending in three directions at angular intervals of 120 degrees at predetermined positions at the six end portions of the regular hexagonal cell portion 10 in predetermined directions. Here, the cut 2a has three cut lines as shown in FIG. That is, cut 2
a is a first score line 2a-1 and a second score line 2a-2.
And a third cutting line 2a-3, and the first cutting line 2a
-1, the second cutting line 2a-2, and the third cutting line 2a-
The three have the same length, and the length is one third of the distance Y between the adjacent corners of the hexagon. In addition, the first cutting line 2a-1 and the second cutting line 2
a-2 forms an angle of 120 degrees, the second cutting line 2a-2 forms an angle of 120 degrees with the third cutting line 2a-3, and the third cutting line 2a-2 forms a first position. Score line 2a
An angle of 120 degrees is formed with -3. Assuming that each cut 2a is a regular hexagon without gaps, the center of the cut 2a is the position of the corner of the hexagon, and the cut line in the cut 2a is the same as that of the regular hexagon. It is arranged to be on the side.

Therefore, the connection portion 2b, which is not cut, is formed with a width which is about one third of the length of each side portion of the regular hexagonal cell portion 10, and the connection portion 2b is formed.
Thus, each regular hexagonal cell unit 10 is connected to another adjacent regular hexagonal cell unit 10. That is, it can be said that the regular hexagonal cell portions 10 that are adjacent to each other are connected at the central portion of each side.

Therefore, since the connecting portion 2b has a short width of about one third of the length of each side portion of the regular hexagonal cell portion 10, the bending rigidity is low, and the regular hexagonal portion adjacent to the connecting portion 2b is connected. The cell parts 10 can be easily bent.
Therefore, a corrugated cardboard base material having high bending rigidity and low flexibility can be easily wound around an article, and even a corrugated cardboard sheet base material can be sufficiently used as a cushioning packaging sheet.

In addition, since the unit cell portion of the regular hexagonal cell portion 10 is a regular hexagonal shape, the regular hexagonal cell portion 10 can be arranged in a honeycomb shape without a gap, and the regular hexagonal cell portion 10 can be vertically, horizontally and diagonally. Since the connection portion 2b is formed, it is possible to bend in the up, down, left, and right directions.

Further, since the connecting portion 2b is formed to have a short width, the connecting portion 2b can be easily shredded by hand, so that the buffer packaging sheet 1 can be easily divided. Therefore, the buffer packaging sheet 1
Can be used by adjusting the size each time by manually slicing the required amount according to the packaged article without using a cutter or scissors. Therefore, it is possible to obtain high versatility without the buffer packaging sheet 1 being short and running short or being too long to be used more than necessary. In addition, there is no need for a molding step as in the case of pulp molding, and no new problems in waste treatment such as air-filled vinyl foam occur.

Also, in this case, each regular hexagonal cell portion 10
The width of the two opposite sides (dimension X in FIG. 2) is 25 mm to 3 mm.
It is set to be 5 mm. Therefore, when packing small items such as general tableware and daily necessities,
The distribution interval of the regular hexagonal cell parts 10 on the surface of the packaged article is an appropriate distribution interval. Therefore, it becomes possible to obtain sufficient restraint property and cushioning property while ensuring the wrapping property in the packaged article.

As shown in FIG. 3, the cushioning packaging sheet 1 is formed from a super-thin type corrugated cardboard sheet base material 2 for the purpose of weight reduction and high strength. Specifically, the corrugated cardboard sheet base material 2 is an ultrathin corrugated cardboard sheet base material, and has a wave height of about 0.6 mm.
Thus, it has a core having 175 ± 5 peaks per 30 cm. Therefore, the buffer packaging sheet 1
Is a three-dimensional structure made of corrugated cardboard, which makes it a stronger sheet base material than single-layer paper, which makes it possible to obtain a high degree of cushioning and, at the same time, it is super thin and can be stored easily. It is excellent in lightness, can be processed with precision, and has many peaks per unit length, so it is possible to obtain sufficient strength even when using thin paper.

The outer shape of the buffer packaging sheet 1 is as follows.
Although it is optional, for example, it may be linear or may have a shape that matches the outer shape of the regular hexagonal cell unit 10. For example, in the example of FIG. 1, at least the upper side and the lower side of the buffer packaging sheet 1 are linear. Also, FIG.
As shown in (3), the outer shape of the cushioning packaging sheet 1 may be entirely linear and may be rectangular as a whole. In addition to the rectangular shape, other square shapes such as a square shape may be used. In addition, when the shape is matched with the outer shape of the regular hexagonal cell portion 10, the outer shape of the cushioning packaging sheet 1 becomes an uneven shape.

Next, the usage state of the first embodiment will be described. As shown in FIG. 4, a goblet P1 which is a packaged article.
The cushioning packaging sheet 1 is wrapped around the outer periphery of and wrapped. In this case, since the buffer packaging sheet 1 can be bent freely at the connection portion 2b having a short width as described above, the buffer packaging sheet 1 can be easily wound around the outer periphery of the goblet P1. . Further, at this time, when the regular hexagonal cell portion 10 and another regular hexagonal cell portion 10 adjacent thereto are bent, the end portion 2c projects and floats.

Then, as shown in FIG. 5, the cushion packaging sheet 1 extends over the entire circumference of the goblet P1.
The part that becomes the end of the seat when wound with (1 in Fig. 5
The buffer packaging sheet 1 is divided by manually splitting the connecting portion 2b of the regular hexagonal cell portion 10 of a). Therefore, it is possible to cut the required amount by hand as needed without using a cutter or scissors, and to adjust the size each time, so that the buffer packaging sheet 1 becomes insufficient or necessary. It is possible to obtain high versatility without increasing the usage amount.

Then, the goblet P1 covered with the buffer packaging sheet 1 is stored in a storage box Q1 as shown in FIG. In this case, as the buffer capacity of the goblet P1, as shown in FIG.
Is a volume R1a between the virtual circumference R1 where is located and the outer circumference of the goblet P1. Therefore, since the buffer packaging sheet 1 is disposed in a useless space in the storage box Q1, the restraint of the goblet P1 is enhanced, and the rattling of the goblet P1 in the storage box Q1 can be suppressed. it can.

Further, the vibration and the shock received during the transportation process of the storage box Q1 and the handling process of the cargo, etc., have a large capacity.
Since the regular hexagonal cell portion 10 is crushed and deformed in 1a, the regular hexagonal cell portion 10 is absorbed, so that the input of vibration and impact force to the goblet P1 is reduced. Therefore, it becomes possible to sufficiently protect the goblet P1 from vibration and impact.

Next, a second embodiment of the present invention will be described. The second embodiment is an example in which the ultra-thin corrugated cardboard sheet base material is used in the first embodiment, and the packaged article is a goblet, whereas the second embodiment is a so-called The difference is that a B-stage type corrugated board base material is used and the example in which the packaged article is a guitar is shown, and both unit cell parts are regular hexagonal cell parts. Further, other basic structures, actions, effects, etc. are the same as those in the first embodiment, and therefore the portions different from the first embodiment will be mainly described.

As shown in FIG. 8, a buffer packaging sheet (buffer sheet) 5 according to the second embodiment of the present invention has the same method as that of the first embodiment and has a large number of unit cell parts. The regular hexagonal cell portion 20 is formed, and is an assembly of the regular hexagonal cell portion 20. In addition, the regular hexagonal cell portion 20 corresponds to the other regular hexagonal cell portion 2
Since 0 and each side are connected to each other without a gap, the cushioning packaging sheet 5 has a substantially honeycomb shape in plan view.

Further, the regular hexagonal cell portion 20 is set so that the width of the two opposite sides is 25 mm to 35 mm, and is connected to the other regular hexagonal cell portion 20 at the side portion. . As in the first embodiment, adjacent regular hexagonal cell parts 20 are connected to each other at a connection part (not shown) having a short width of about one third of the length of each side part of the regular hexagonal cell part 20. Can be easily bent,
Since the connection part can be easily shredded by hand,
The buffer packaging sheet 5 can be easily divided.
Therefore, the buffer packaging sheet 5 can be used by adjusting the size each time by manually slicing the required amount according to the packaged article without using a cutter or scissors. Therefore, it is possible to obtain high versatility without the buffer packaging sheet 5 being short and running short or being too long to be used more than necessary. In addition, there is no need for a molding step as in the case of pulp molding, and no new problems in waste treatment such as air-filled vinyl foam occur.

The buffer packaging sheet 5 is formed of a so-called B-tier type corrugated cardboard sheet base material.
Specifically, the wave height of the wavy shape is about 2.5 mm, 30c
It has a core having 50 ± 3 peaks per m. Therefore, since the corrugated board base material has significantly higher strength and cushioning property than the case of the ultra-thin corrugated board base material 2 in the first embodiment, the above-mentioned corrugated board base material formed from such a corrugated board base material The cushioning packaging sheet 5 is suitable for packaging the whole or a part of a relatively large packaged article which receives a large impact.

Next, the usage state of the second embodiment will be described. As shown in FIG. 8, the buffer packaging sheet 5 has a vertical size such that it slightly hangs on the neck portion of the head P2a which is easily scratched by a collision because the tip portion of the guitar P2, which is a packaged article, is greatly shaken. Cut in advance. Then, as shown in FIG. 9, the buffer packaging sheet 5
Is wrapped around the head P2a so that it hangs up to the neck portion and is enveloped.

In this case, since the buffer packaging sheet 5 is freely bendable at the connecting portion having a small width as described above, the buffer packaging sheet 5 can be easily wound around the outer periphery of the head P2a. it can. In addition, when the regular hexagonal cell portion 20 and another adjacent regular hexagonal cell portion 20 are bent due to the notch which is not connected at this time, the end portion protrudes and rises.

Then, with the outer periphery of the head P2a wound around the entire circumference or more, by manually cutting the connecting portion of the regular hexagonal cell portion 20 at the end portion of the buffer packaging sheet 5 by hand. The buffer packaging sheet 5 is divided. Therefore, even without using a cutter or scissors, it is possible to manually shred the required amount as needed and adjust the size each time, and the buffer packaging sheet 5 may become insufficient or necessary. It is possible to obtain high versatility without increasing the usage amount. And
In that state, the end portion of the buffer packaging sheet 5 is closed with a single-sided tape, a double-sided tape, or the like to maintain the wound state of the buffer packaging sheet 5.

Then, the guitar P2 with the head P2a wound around the buffer packaging sheet 5 is stored in a storage box, a guitar case, or the like. In this case, the head P2
The buffer capacity of a is a large volume between the protruding and floating end portion and the outer circumference of the head P2a as in the first embodiment. Therefore, even if the guitar P2 swings largely and the storage box collides with a wall or the like during a transportation process, a handling process, or the like, the shock is mitigated by the buffer packaging sheet 5 having a large buffer capacity, which is preferable. It is possible to prevent the head P2a from being scratched.

Further, since the buffer packaging sheet 5 is made of a corrugated cardboard base material of B-stage type having high strength and cushioning property, it is preferable that the head P2a is not damaged even when it receives a considerable impact. Can be suppressed.

In the second embodiment, the cushion packaging sheet 5 is wound around the head P2a of the guitar P2, but the present invention is not limited to this and the neck portion of the guitar P2 or The cushioning packaging sheet 5 may be wound around the whole.

As described above, according to the cushioning packaging sheets of the first and second embodiments, the cushioning packaging sheet suitably functions as a cushioning material. In particular, since the cushioning packaging sheets 1 and 5 of each of the above embodiments are an assembly of a plurality of regular hexagonal cell portions 10 and 20, any portion can be bent or curved vertically, horizontally, or diagonally. Therefore, since the flexibility is significantly improved as compared with the ordinary corrugated board material, it is possible to package articles of any shape.

The present invention also relates to the first and second embodiments described above.
The present invention is not limited to the configuration of the embodiment, and various modes are possible. For example, the cushion packaging sheet 1 of the first embodiment is used for the goblet P1 and the cushion packaging sheet 5 of the second embodiment is used for the guitar P2, but the invention is not limited thereto and it is not limited to this. It is applicable to buffer packaging of various articles such as tableware, cosmetics, electronic devices, books, sports equipment, fishing tackle, bottled or canned beverages, and instant foods.

Further, the cushioning packaging sheets 1 and 5 according to the first and second embodiments are packaging sheets having a cushioning function, but the present invention is not limited thereto and, for example, a heat insulating material, a heat insulating material or the like. The sheet base material can be used for other purposes and has high versatility and flexibility. Further, since it is made of corrugated cardboard, it also has an effect of improving air permeability as compared with a vinyl material or the like.

In the buffer packaging sheets 1 and 5 according to the first and second embodiments, the ultra-thin type and the B-stage type are used as the corrugated cardboard sheet base material, and the regular hexagonal cell portions are opposed to each other. The width of the two sides is set to be 25 mm to 35 mm, but is not limited thereto. The shape of the core, the thickness of the sheet, whether the liner is a single-sided liner or double-sided liner, or the hexagonal cell part The width and the like of the two sides facing each other are appropriately selected depending on the articles to be packaged, the use conditions and the like.

In the above description, the cushion packaging sheet is described as being formed of corrugated cardboard.
It may be formed of another sheet-shaped member, for example, a paper material such as cardboard.

Further, in the cushioning packaging sheets 1 and 5 according to the first and second embodiments, the unit cell portion is an assembly of a plurality of regular hexagonal cell portions 10 and 20, but is not limited thereto. However, the assembly of regular octagonal unit cell portions 110 such as the buffer packaging sheet 100 shown in FIG. 10, the assembly of equilateral triangular unit cell portions 210 such as the buffer packaging sheet 200 shown in FIG. It may be an aggregate of regular square (square) unit cell portions 310 like the cushioning packaging sheet 300 shown in FIG.

That is, the example shown in FIG. 10 is an example in which the unit cell portion is a regular octagon, and the Y-shaped cut 110.
By disposing a, a regular octagonal unit cell unit 110
Are formed. In addition, this regular octagonal unit cell part 1
The space surrounded by 10 has a square cell portion 112.
Is provided. In this case, the unit cell parts 110 are connected to each other via the connection part 110b, and the unit cell part 110 and the cell part 112 are connected to each other via the connection part 112b. The square space may be hollowed out. In that case, the cell unit 11
2 is not formed.

The example shown in FIG. 11 is an example in which the unit cell portion is an equilateral triangle. By disposing notches having six notch lines extending radially, the unit cell of the equilateral triangle is formed. The part 210 is formed. Each unit cell part 2
The ten members are connected to each other via the connecting portion 210b.

Further, the example shown in FIG. 12 is an example in which the unit cell portion is a square, and by arranging the T-shaped cuts in the horizontal direction alternately in the vertical direction, the square-shaped unit is formed. The cell unit 310 has unit cell units 310 that are vertically adjacent to each other.
They are formed so that they are laterally offset from each other by half. That is, in the vertical direction, the unit unit 300a in which the unit cell portions 310 are linearly arranged in the horizontal direction is
The unit cell portions 310 are arranged so as to be offset by half the width. The unit cell portions 310 that are vertically adjacent to each other are connected by the connecting portion 3
The unit cell portions 310 that are connected to each other via 10b and that are adjacent to each other on the left and right are connected to each other via a connecting portion 310c.

As shown in FIG. 13, by arranging + -shaped (that is, cross-shaped) notches 410a in the vertical and horizontal directions, a square unit cell portion 310 is formed in both the vertical and horizontal directions. You may make it arrange | position in a linear form.
In this case, the unit cell portions 410 are connected to each other by the connecting portion 410b.
Connected through.

Further, the unit cell portion is not limited to the regular polygon but may be a circular or elliptical unit cell portion. Further, the position and width of the connecting portion in this case are appropriately set in consideration of the bending direction of the cushioning packaging sheet, the rigidity at the time of bending, and the like.

[0058]

According to the cushioning sheet of the present invention, since the unit cell portion is bendable by the connecting portion, it becomes possible to use the article to be protected by packaging it. Also, when the buffer sheet is wrapped in a packaged article, the unit cell portion and another adjacent unit cell portion are bent, and the end portion of the unit cell portion projects outward and floats. Therefore, since the protruding end portion increases the buffer capacity when the packaged article is wrapped, it is possible to obtain high restraint and cushioning property of the packaged article. Also,
Since the buffer sheet is connected to the adjacent unit cell portion only by the connecting portion, the buffer sheet can be easily divided by manually cutting the connecting portion. Therefore, even if you do not use cutters or scissors, you can cut the required amount according to the packaged item by hand and adjust the size each time. It is possible to obtain high versatility without increasing the usage amount.

In particular, when the unit cell portion has a regular hexagonal shape, the regular hexagonal cell portion can be arranged in a honeycomb shape without any gap, and the connecting portions can be formed in the vertical, horizontal, and diagonal directions. It is possible to easily bend up, down, left and right, and diagonally.

In particular, when the cushioning sheet is made of corrugated cardboard, the cushioning function can be further improved, and the cushioning sheet can be easily shredded. . Further, it can be easily discarded and can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a plan view showing a structure of a buffer packaging sheet according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of an essential part showing the structure of a cushioning packaging sheet according to the first embodiment of the present invention.

FIG. 3 is a side view showing the structure of the cushioning packaging sheet according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a specification state of a cushioning packaging sheet according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a specification state of the cushioning packaging sheet according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a specification state of a cushioning packaging sheet according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a specification state of the cushioning packaging sheet according to the first embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a specification state of a buffer packaging sheet according to the second embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a specification state of a cushioning packaging sheet according to the second embodiment of the present invention.

FIG. 10 is a plan view showing another embodiment of the buffer packaging sheet according to the present invention.

FIG. 11 is a plan view showing another mode of the buffer packaging sheet according to the present invention.

FIG. 12 is a plan view showing another embodiment of the buffer packaging sheet according to the present invention.

FIG. 13 is a plan view showing another embodiment of the buffer packaging sheet according to the present invention.

[Explanation of symbols]

1, 5 Buffer packaging sheet 2 Corrugated cardboard sheet substrate 10, 20, 110, 210, 310, 410 Unit cell portion 2a, 110a, 210a, 310a, 410a Cut 2b, 110b, 112b, 210b, 310b, 31
0c, 410b connection part

Claims (14)

[Claims] 1. A buffer sheet, wherein a plurality of cuts having the same shape are provided, and a plurality of unit cell portions having the same shape are connected in series via a connecting portion. 2. A cushioning sheet, comprising a plurality of radially formed notches,
A buffer sheet, comprising unit cell parts of the same shape, wherein polygonal unit cell parts are continuously provided through a connecting part. 3. The buffer sheet according to claim 1, wherein the unit cell portion is a regular hexagon. 4. The cushioning sheet according to claim 3, wherein the cuts are cut lines that extend radially at an angle of 120 degrees. 5. The buffer sheet according to claim 1, wherein the unit cell portion is an equilateral triangle. 6. The cushioning sheet according to claim 5, wherein the cuts are formed by six cut lines that extend radially. 7. The buffer sheet according to claim 1, wherein the unit cell portion is square. 8. The cushioning sheet according to claim 7, wherein the cut is a T-shaped or cross-shaped cut line. 9. The unit cell portion is a regular octagon, and a square cell portion is provided in a space surrounded by the regular octagonal unit cell portion. The buffer sheet described in 1. 10. The cushioning sheet according to claim 9, wherein the notch has a Y shape. 11. The cushioning sheet is formed of a corrugated board material.
Or the buffer sheet according to 4 or 5 or 6 or 7 or 8 or 9 or 10. 12. A cushioning sheet made of corrugated cardboard material, wherein notches each having a notch line extending radially at an angle of 120 degrees are arranged in the regular hexagon without gaps. By arranging so that the center of the cut is located at the corner position and each cut line in the cut is on each side of the regular hexagon,
A buffer sheet, wherein a plurality of regular hexagonal unit cell parts are arranged in series, and adjacent unit cell parts are connected at the central portion of each side. 13. The cushioning sheet according to claim 3, wherein a width between two opposing sides of each regular hexagonal cell portion is 25 mm to 35 mm. 14. The cushioning sheet is formed of a corrugated cardboard sheet base material having a core having a wave height of about 0.6 mm and a number of peaks per 30 cm of 175 ± 5 peaks. Claim 1 or 2 or 3 or 4
Or the buffer sheet according to 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13.