Packaging

Abstract

To provide a package for storing in a warehouse and delivering articles by bagging the articles in a protected state using a paper packaging material with low environmental load without using plastic packaging material.SOLUTION: A package 10 has a paper back cushioning sheet 12 on which an article 14 is placed, and a paper front cushioning sheet 13 that covers the top surface of the article 14. In the back cushioning sheet 12 and the front cushioning sheet 13, first extension parts 12a, 13a that extend from the article 14 to one side in the stretching direction and overlap, and second extension parts 12b, 13b that extend to the other side and overlap, are compressed in the overlapping direction and partially joined, so that the article 14 is covered with the front and back cushioning sheets 12, 13 and primarily packaged. The primarily packaged article 15 is covered with craft paper 16, 17 and secondarily packaged.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a package in which an article is packaged in a protected state.

Background Art

[0002] With the expansion of Internet shopping, the business of delivering various articles by mail or courier has increased dramatically. Conventionally, packages having a function of protecting articles temporarily stored in a warehouse or the like or articles during delivery from damage have been known. Patent Document 1 discloses a package in which an article is accommodated and protected in a bag made of kraft paper having a plastic bubble cushioning material adhered to the inner surface.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, as part of measures against environmental problems such as marine pollution and global warming caused by plastic waste, regulations for reducing plastic waste have been strengthened, and the momentum for plastic reduction efforts has been increasing. However, since the above package uses a plastic bubble cushioning material for protecting articles, it has a large environmental impact. There is an increasing trend to adopt an environmentally considerate package by reducing the amount and volume of such packaging plastic materials or replacing plastic packaging materials with paper.

[0005] An object of the present invention is to provide a package for bagging an article in a paper wrapping material with a small environmental impact without using a plastic packaging material in a protected state for storage in a warehouse, delivery, or the like.

Means for Solving the Problems

[0006] To solve the aforementioned problems and achieve the intended objective, the first means is: A paper sheet is provided with multiple rows of cuts (11), and by stretching it in a direction intersecting the longitudinal direction of the cuts (11), a three-dimensional mesh-like cushioning material sheet is cut to a predetermined length, and a front cushioning material sheet (13) and a back cushioning material sheet (12) are provided to cover the front and back of the article (14). In the stretching direction of the cushioning material sheet, the extended portions (12a, 13a, 12b, 13b) of the front cushioning material sheet (13) and the back cushioning material sheet (12) extending toward one side and the other side of the article (14) are partially compressed at the overlapping portions so that the article (14) is covered with the cushioning material sheets (12, 13) and is primarily packaged. The gist of the invention is that the primary packaged product (15), covered with the cushioning material sheets (12, 13), was then secondary packaged as a sealed bag covered with kraft paper (16, 17, 32). This configuration provides environmentally friendly packaging in which goods are protected by packaging materials with low environmental impact. Furthermore, since the front and back cushioning sheets are heat-sealed, there is no need to use adhesives or cushioning sheets with pre-formed adhesive layers, thus reducing packaging costs. Additionally, since the packaging can be manufactured by first wrapping the product with cushioning sheets and then second-wrapping it with kraft paper, automation of the packaging process is easily facilitated.

[0007] The second method is characterized in that the extensions (12a, 13a, 12b, 13b) are partially compressed at multiple locations spaced apart in the width direction intersecting the stretching direction of the cushioning sheet. This configuration enhances the bonding of the cushioning sheet compared to a case where the extended portion is bonded at only one point, preventing the bonded area from separating before secondary packaging.

[0008] The third method is characterized in that the secondary packaging is made of kraft paper (16, 17, 32) coated with a heat-sealing agent on its inner surface, and three or four sides of the overlapping portion covering the primary packaged product (15) are sealed by heat sealing. With this configuration, the goods are protected by cushioning material in the initial packaging, then sealed in kraft paper bags, effectively protecting them from dust, dirt, and other contaminants during storage and distribution after packaging.

[0009] The fourth method is essentially to provide the secondary-packaged kraft paper (16, 17, 32) with an opening mechanism (19) for the packaging (10, 31, 35). This configuration makes it easy to open packages that have been secondarily wrapped in kraft paper.

[0010] The fifth means is that the front cushioning sheet (13) covers the surface of the article (14) and the side of the cushioning sheet facing the stretching direction of the cushioning sheet, with respect to the back cushioning sheet (12) which extends flat along the back surface of the article (14), with a length that takes into account the length in the stretching direction and the thickness in the front-back direction of the cushioning sheet on the article (14), and the extended portions (12a, 13a, 12b, 13b) of the front cushioning sheet (13) and the back cushioning sheet (12) overlapping and being pressed together so that the extended ends of the extended portions (12a, 13a, 12b, 13b) of the front cushioning sheet (13) and the back cushioning sheet (12) are in the same position. With this configuration, the front cushioning sheet is made longer than the back cushioning sheet by an amount that takes into account the thickness of the article in the front-back direction, and the extended portion is overlapped and pressed together. This allows the front and back of the article to be covered with cushioning sheets in the same stretched state, so that the protection conditions of the article do not differ on the front and back. In addition, the article can be automatically packaged effectively by placing the back cushioning sheet down, placing the article on top of it, and covering the article with the front cushioning sheet. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide a packaging body with a cushioning function, in which a primary package covering an article with a paper-made cushioning material sheet for protecting the article is secondarily packaged with kraft paper and bagged. That is, by using a packaging material with less environmental load that does not use a plastic packaging material as a packaging material for packaging an article, for example, a packaging body with a cushioning function for storing and delivering goods can be provided.

Brief Description of the Drawings

[0012] [Figure 1] It is a schematic longitudinal sectional view showing the packaging body. [Figure 2] It is a schematic perspective view showing a primary package covering an article with a cushioning material sheet. [Figure 3] It is a schematic perspective view of a main part showing an enlarged joint part of the front and back cushioning material sheets. [Figure 4] It is a schematic perspective view showing the packaging body. [Figure 5] It is a schematic perspective view showing a state in which a primary package is exposed by partially cutting open a packaging body secondarily packaged with kraft paper. [Figure 6] It is an explanatory view showing a process of manufacturing the packaging body (by an automatic packaging machine). [Figure 7] It is an explanatory view showing a strip-shaped cushioning material sheet pulled out from a cushioning material roll. [Figure 8] It is an explanatory view of another embodiment showing a pillow packaging body secondarily packaged with kraft paper. [Figure 9] It is an explanatory view of another embodiment showing a three-side seal packaging body secondarily packaged with kraft paper.

Modes for Carrying Out the Invention

[0013] Next, preferred embodiments of the packaging body according to the present invention will be given and described below while referring to the accompanying drawings.

Examples

[0014] The packaging 10 in the embodiment shown in Figure 1 is a packaging in which a primary packaged product 15, in which the front and back (top and bottom) of an article 14 is covered with paper cushioning sheets 12 and 13, is secondarily packaged with kraft paper 16 and 17. The cushioning sheets 12 and 13 consist of, for example, a strip-shaped sheet made of kraft paper, with multiple rows of linear cuts 11 arranged in a staggered pattern, which can be stretched in a direction intersecting the longitudinal direction of the cuts 11 (stretching direction), and the cuts 11 are stretched to form a three-dimensional mesh, and the cushioning sheets 12 and 13 are cut to a predetermined length. The packaging 10 has a back cushioning sheet 12 that covers the back (bottom) surface of the article 14 and a front cushioning sheet 13 that covers the front (top) surface of the article 14. The cushioning sheets 12 and 13 are partially compressed near the overlapping ends of the first extensions 12a and 13a that extend toward one side of the article 14 and overlap each other in the stretching direction, and the overlapping ends of the second extensions 12b and 13 that extend toward the other side of the article 14 and overlap each other, thereby covering the article 14 with the front and back cushioning sheets 12 and 13 for primary packaging. The packaging 10 is then manufactured by secondary packaging as a bag in which the primary packaged item 15 is covered with kraft paper 16 and 17 that seals the perimeter of the primary packaged item 15.

[0015] As shown in Figures 2 and 3, the first extensions 12a, 13a and the second extensions 12b, 13b of the cushioning material sheets 12, 13 on the front and back of the primary packaging product 15 have joints 18 formed at multiple locations (two locations in this embodiment) spaced apart in the width direction intersecting the stretching direction, where both cushioning materials 12, 13 are pressed together. The joints 18 are portions where the upper and lower overlapping first extensions 12a, 13a and second extensions 12b, 13b are clamped at a predetermined pressure by a crimping tool with interlocking teeth, resulting in alternating crimping of narrow recesses and protrusions in the width direction. The first extensions 12a, 13a and the second extensions 12b, 13b are deformed by compression without the use of adhesive. When primary packaging is performed by an automatic packaging machine, for example, as shown in Figure 6, when the overlapping portions of the first extensions 12a, 13a and the second extensions 12b, 13b are clamped from above and below by the crimping members (biting devices) 26a, 26b, the protrusions and recesses of the crimping members 26a, 26b interlock at a predetermined pressure, pressing the extensions 12a, 13a, 12b, 13b together, deforming them into the aforementioned protrusion and recess shape, and joining them together without separating. The joint 18 is provided at a position a predetermined length away from the extension ends (outer edges) of the first extensions 12a, 13a and the second extensions 12b, 13b towards the article. The front cushioning sheet 13 is formed in a three-dimensional mesh shape and is set to a length that takes into account the length in the stretching direction and the thickness in the front-back direction of the cushioning sheet on the article 14. The front cushioning sheet 13 covers the surface of the article 14 and the side facing the stretching direction of the cushioning sheet, and its extended portions 13a and 13b overlap the extended portions 12a and 12b of the back cushioning sheet 12 extending from the article 14 by a predetermined length. Furthermore, the extended portions 13a and 13b of the front cushioning sheet 13 and the extended portions 12a and 12b of the back cushioning sheet 12 which extends flatly along the back surface of the article 14 are overlapped and pressed together so that their extended ends are at the same position. In other words, the front cushioning sheet 13 is set to be longer than the back cushioning sheet 12 by an amount that takes into account the length corresponding to the thickness of the article 14 (approximately twice the thickness), and the article 14 is covered on both sides by the front cushioning sheet 13 and the back cushioning sheet 12, which are formed in a three-dimensional mesh shape and are not subjected to tension.

[0016] As shown in FIGS. 4 and 5, the package 10 covers the front and back (top and bottom) of the primary package 15 with sheets made of rectangular kraft papers 16 and 17, and the four overlapping portions surrounding the primary package 15 in the kraft papers 16 and 17 are heat-sealed to be sealed, thereby performing secondary packaging, and the primary package 15 is sealed by bagging. For example, a part coat or other heat-sealing coating treatment is performed on the inner surfaces of the kraft papers 16 and 17. By sandwiching the surfaces of the kraft papers 16 and 17 with a heat-sealing bar or the like, the sealant material (heat-sealing agent) applied to the inner surfaces is melted, and a sealed portion 10a where the front and back kraft papers 16 and 17 are welded is formed on the package 10. Further, it is preferable that, for example, an opening notch 19 is formed at the edge of the kraft papers 16 and 17 as an opening means. The opening notch 19 may be a notch of various shapes such as a V shape, a U shape, a semicircle, a trapezoid or a C shape, a linear cut or a perforation. In the configuration where the front and back cushion sheets 12 and 13 extend from both sides in the width direction of the article 14, the side extension portions 12c and 13c of the cushion sheets 12 and 13 in the width direction of the article 14 are, during secondary packaging, when covering the primary package 15 with the front and back kraft papers 16 and 17 and bringing the front and back kraft papers 16 and 17 together and heat-sealing them outside the side extension portions 12c and 13c of the primary package 15, the side extension portions 12c and 13c are wound around the side surface of the article 14, and the side surface side in the width direction of the article 14 is protected by the side extension portions 12c and 13c.

[0017] In the example, the packaging 10 uses paper packaging materials for the front and back cushioning sheets 12 and 13 that cover the article 14 to protect it, and the kraft paper 16 and 17 that covers the primary packaging 15. This allows for the provision of an environmentally friendly, cushioning-enabled packaging that does not use plastic packaging materials. In other words, by using environmentally friendly packaging materials for all packaging materials that wrap the article 14, an environmentally friendly, cushioning-enabled packaging can be provided, for example, for the storage and delivery of goods. Furthermore, since the front and back cushioning sheets 12 and 13 that protect the article 14 are heat-sealed, there is no need to use adhesives or cushioning materials with adhesive layers, thus keeping the total cost, including packaging costs in addition to manufacturing costs, low (making it inexpensive).

[0018] In the packaging 10 of the embodiment, the first extensions 12a, 13a and the second extensions 12b, 13b of the front and back cushioning material sheets 12, 13 are only crimped at two points spaced apart in the width direction. Therefore, the pressure applied during crimping can be set to a lower value compared to the case where the extensions 12a, 13a, 12b, 13b are crimped along their entire width. Furthermore, when removing the cushioning material covering the article 14, the joint (crimped part) 18 can be removed with relatively little force, allowing the front and back cushioning materials to be easily separated and removed. Moreover, when removing the cushioning material from the article 14, it does not tear into small pieces and scatter as debris. Furthermore, compared to the case where the extensions 12a, 13a, 12b, 13b are partially crimped at only one point, the crimping state of the cushioning material sheets 12, 13 can be improved, preventing the crimped parts from separating before secondary packaging. Furthermore, since the packaging 10 is secondary packaging in which the primary packaged product 15 is sealed with kraft paper 16, 17, the article 14 can be effectively protected during storage and distribution after packaging, and the article 14 can be protected from dust, dirt and other foreign matter entering the packaging, dust, dirt and other contaminants adhering to the article 14, and other dirt. In addition, by forming an opening notch 19 in the kraft paper 16, 17, the packaging 10, which is an outer packaged product in a bag-like form as secondary packaging, can be easily opened. Furthermore, in the packaging 10, the primary packaged product 15 covered with cushioning material is secondarily packaged with kraft paper 16, 17. The lateral extensions 12c, 13c of the cushioning material sheets 12, 13, which cover both sides of the article 14 and extend in the width direction, are wrapped around the width direction side of the article 14 as the front and back kraft paper 16, 17 are brought together during the secondary packaging. These lateral extensions 12c, 13c protect the width direction side of the article 14 and also suppress movement of the article 14, which is surrounded by cushioning material, within the bag.Furthermore, the front cushioning sheet 13 is formed in a three-dimensional mesh shape and, without tension applied, is set to a length that takes into account the length in the stretching direction and the thickness in the front-back direction of the cushioning sheet on the article 14, covering the surface and the side of the article 14 opposite to the stretching direction of the cushioning sheet. The extended portions 13a and 13b of the front cushioning sheet 13 extend flat along the back surface of the article 14 and are pressed onto the extended portions 12a and 12b of the back cushioning sheet 12, which is formed in a three-dimensional mesh shape and without tension applied. In other words, the front cushioning sheet 13 and the back cushioning sheet 12 cover the front and back surfaces of the article 14 in the same stretched state without one being excessively stretched, so that the protection conditions of the article 14 do not differ on the front and back. In addition, the article 14 can be placed on top of the back cushioning sheet 12 with the back cushioning sheet 12 facing downwards, and the front cushioning sheet 13 can be used to cover the article 14, enabling efficient automatic packaging.

[0019] The packaging 10 of the example can be manufactured as follows. As shown in Figure 6(a), the primary packaging involves drawing out strips of paper 21 and 22, such as kraft paper, from cushioning material rolls (supply sources) 23 and 24, which are positioned above and below the transport path of the article 14 by a transport means 20 such as a conveyor. By drawing them out in the direction of drawing, the upper and lower strips of paper (strip cushioning material) 21 and 22, which have become a three-dimensional mesh, are pressed together at two points in the width direction at the end of the drawn-out section, and the strips of paper 21 and 22 are stretched so that they traverse the article transport path in the vertical direction. As shown in Figure 7, the cushioning material rolls 23 and 24 are wound with strips of paper 21 and 22 that have staggered cuts 11 extending in the width direction intersecting the drawing direction. When drawing them out, tension is applied in the drawing direction by the expansion means 25, causing the cuts 11 of the strips of paper 21 and 22 to expand and become a three-dimensional mesh. Furthermore, the crimped ends of the upper and lower strips of paper 21 and 22 are positioned at a height level that matches the transport level of the transport means 20. Then, the article 14 is supplied toward the extended portion of the strips of paper 21 and 22, and the upper and lower strips of paper 21 and 22 are unfurled in sync with the transport speed of the article 14. The crimped ends of the strips are then gripped by a chuck (not shown) and sent downstream in sync with the transport speed of the article 14, so that the upper and lower strips of paper 21 and 22, which are joined on the front side in the transport direction of the article 14, are wrapped around the article 14 so that they cover the lower (back) and upper (front) sides of the article 14. When the article 14 moves forward beyond the stretched section, the upper and lower strips of paper 21 and 22 extending to the rear in the transport direction of the article 14 are clamped by a pair of clamping members, 26a and 26b, which move closer together and further apart in the vertical direction. At two locations spaced apart in the width direction, the clamping members 26a and 26b, which have teeth formed in a wave-like, uneven pattern (not shown), are brought together with a predetermined pressure, and the upper and lower strips of paper 21 and 22 are held between the clamping members 26a and 26b, and the overlapping strips of paper 21 and 22 are crushed and pressed together by the applied pressure. During the pressing process, the strips of paper 21 and 22 are cut in the width direction behind the pressing position. As a result, the lower surface of the article 14 is covered with the back cushioning sheet 12, and the upper surface and the front and rear surfaces in the transport direction of the article 14 are covered with the front cushioning sheet 13, and the front and rear extensions 12a, 13a, 12b, 13b of the article 14 are crimped together to produce a primary packaged product 15 (see Figure 6(b)).The crimping means 26 crimps the upper and lower strips of paper 21 and 22 at positions separated in the transport direction, and during the crimping process, it cuts the strips of paper 21 and 22 in the width direction between the crimping positions separated in the transport direction (behind the front crimping position). This causes the crimped ends of the strips of paper 21 and 22 to be stretched so as to traverse the article transport path in the vertical direction, and the primary packaged product 15 is separated from the strips of paper 21 and 22 and transported downstream.

[0020] As shown in Figure 6(c), the secondary packaging is drawn from wrapping rolls (supply sources) 28 and 29, which are arranged above and below the transport path of the transport means 27 that transports the primary packaged product 15. The kraft paper 16 and 17, with their ends welded and sealed, are then stretched across the transport path in the vertical direction. The sealed ends of the upper and lower kraft paper 16 and 17 are held by chucks (not shown) and positioned approximately in the center of the height of the primary packaged product 15 being transported by the transport means 27. The primary packaged product 15 is then supplied toward the stretched portion of the kraft paper 16 and 17. Furthermore, at a predetermined timing when the primary packaging 15 reaches the stretching section, the chuck gripping the pull-out end moves downstream in sync with the transport speed of the primary packaging 15, and the upper and lower kraft papers 16 and 17 are unfurled in sync with the transport speed of the primary packaging 15, so that the upper and lower kraft papers 16 and 17 wrap around the primary packaging 15 so that they cover the lower and upper sides. Then, when the primary packaging 15 has advanced past the stretching section, the upper and lower kraft papers 16 and 17 are sealed and cut in the width direction behind the primary packaging 15 by the seal cutting means 30. After that, both sides of the kraft papers 16 and 17 in the width direction are sealed and cut outside the primary packaging 15, thereby obtaining a package 10 in which the primary packaging 15 is secondarily packaged with kraft papers 16 and 17. The seal cutting means 30 seals the upper and lower kraft papers 16 and 17 in the width direction at positions separated in the transport direction, and cuts the kraft papers 16 and 17 in the width direction between the two sealed portions. This causes the kraft papers 16 and 17 with sealed ends to spread out so as to traverse the transport path in the vertical direction, and the secondary packaged body 10 is separated from the kraft papers 16 and 17 and transported downstream.

[0021] According to the above manufacturing method, a primary package 15 can be obtained in which strips of paper (strip-shaped cushioning material) 21 and 22 pulled from cushioning material rolls 23 and 24 are covered with upper and lower cushioning material sheets 12 and 13 cut to a length corresponding to the size of the article 14. This makes it possible to easily accommodate the packaging of articles 14 of various sizes.

[0022] (Another example) The packaging 31 shown in Figure 8 and the packaging 35 shown in Figure 9 are packaging bodies representing a different embodiment. These packaging bodies 31 and 35 are packaging bodies obtained by secondary packaging of the primary packaging product 15 using a pillow packaging machine. A vertical seal portion 33 is formed by overlapping both longitudinal ends of a tubular kraft paper 32 in a gable shape and heat sealing them. Horizontal seal portions 34 that intersect the vertical seal portion 33 are heat-sealed at both front and rear ends of the tubular kraft paper 32 that surround the primary packaging product 15 contained within the tubular kraft paper 32.

[0023] In the packaging 31 shown in Figure 8, the vertical seal portion 33 is formed at the position where the kraft paper 32 overlaps at the central position of the cylindrical shape, while in the packaging 35 shown in Figure 9, the vertical seal portion 33 is formed at the position where the kraft paper 32 overlaps on one side of the cylindrical shape.

[0024] (Example of change) The present invention is not limited to the configuration of the embodiments, and can be modified as follows, for example. Furthermore, various embodiments can be adopted within the scope of the spirit of the present invention, not limited to the following modified examples, for the configuration described in the embodiments. (1) The joint 18 may be formed by crimping at one location or at three or more locations. (2) Opening means may be provided as needed. In addition, instead of the opening notch 19, for example, a cut tape strip made of cardboard may be provided on the back of the kraft paper 16, 17 to improve ease of opening, or other various easy-opening treatments may be applied. [Explanation of symbols]

[0025] 10 Packaging, 11 Cutout, 12 Backing cushioning sheet 12a 1st extension part (extension part), 12b 2nd extension part (extension part) 13 Surface cushioning sheet, 13a First extension (extension) 13b Second extension part (extension part), 14 Article, 15 Primary packaging product 16 Kraft paper, 17 Kraft paper, 19 Opening notch (opening mechanism) 31 Packaging, 32 Cylindrical kraft paper, 35 Packaging

Claims

1. A cushioning material sheet is made by providing multiple rows of cuts in a paper sheet and stretching it in a direction intersecting the longitudinal direction of the cuts, thereby creating a three-dimensional mesh-like structure that is cut to a predetermined length, and comprising a front cushioning material sheet and a back cushioning material sheet that cover both sides of an article. In the stretching direction of the cushioning sheet, the extended portions of the front cushioning sheet and the back cushioning sheet extending toward one and the other of the article are partially joined by interlocking portions that are deformed into an uneven shape at the overlapping portions, thereby covering the article with the cushioning sheet for primary packaging. The primary packaged product, covered with the cushioning sheet, was then secondarily packaged in a bag sealed with kraft paper. A packaging body characterized by the following features.

2. The packaging according to claim 1, characterized in that the extended portion is partially joined at multiple locations spaced apart in the width direction intersecting the stretching direction of the cushioning material sheet.

3. The packaging according to claim 1, characterized in that the secondary packaging is made of kraft paper coated with a heat-sealing agent on its inner surface, and three or four sides of the overlapping portion covering the primary packaged product are sealed by heat sealing.

4. The packaging according to claim 1, characterized in that the secondary packaging kraft paper is provided with a means for opening the packaging.

5. The packaging according to any one of claims 1 to 4, characterized in that the front cushioning sheet covers the surface of the article and the side of the cushioning sheet facing the stretching direction of the cushioning sheet, with respect to the back cushioning sheet which extends flatly along the back surface of the article, with a length that takes into account the length in the stretching direction and the thickness in the front-back direction of the cushioning sheet on the article, and the extended portions of the front cushioning sheet and the back cushioning sheet are joined to each other so that the extended ends of the extended portions of the front cushioning sheet and the back cushioning sheet are at the same position.

Images