JP2005280795A - Cushioning material using air for storage of product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cushioning material superior in addressing the environment, which enables a substantial reduction in the kinds of cushioning materials used and a reduction in the storage space for the cushioning material, and further enables repetitive use thereof. <P>SOLUTION: The cushioning material, using air for storage of products, is such that a flexible sheet member is so formed that a suitable number of inner melt-bonded portions are formed at approximately equal intervals between a plurality of outer layers and inner layers so as to provide air layers in communication, with the sheet member being folded and bonded at both its side rim portions; while the space between the end portions of the sheet member on the front face side is made an opening portion for storing products, holding the products by making the air layers swell. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cushioning material for product storage that uses air for the purpose of protecting products that are easily damaged such as precision equipment and electronic parts from vibration and impact.

  Conventionally, when transporting fragile products (hereinafter simply referred to as products) such as precision equipment and electronic parts related to information equipment, an irregularly shaped cushioning material is disposed between the cardboard box and the product, or the parts. A specially shaped cushioning material is used to protect the product from vibration and shock.

  In general, small products such as those mentioned above are generally not damaged when dropped from a height of about 80 cm if the impact value applied to the product is 50 G or less. In consideration of the safety factor, a buffer material is selected as a buffer material.

  In particular, in the buffer material manufactured in a regular shape, for example, foamed polyethylene or the like is used as the buffer material. However, these cushioning materials need to be manufactured in advance in a shape that matches the outer shape of the product, and costs such as production molds and cutting and processing costs are generated. In addition, since products have various shapes, it is necessary to prepare a dedicated cushioning material for each product according to the outer shape of the product.

  In addition, all the cushioning materials have a relatively large volume, and it is necessary to store or separate them before use, which requires a storage space as a material storage for that purpose.

Furthermore, it is necessary to select and combine cushioning materials suitable for the product from many types of cushioning materials, and perform packing work, which makes the work complicated.
JP-A-9-86565

  The present invention solves the above-mentioned problems, and by holding the product in an air layer, the type of cushioning material is greatly reduced, the storage space for the cushioning material is reduced, and repeated use is possible. It is possible to obtain a buffer material excellent in environmental response.

  According to the present invention, a flexible sheet member having a communication air layer is formed by forming an appropriate number of internal fused portions between outer layers and inner layers consisting of several layers at substantially equal intervals. A cushioning material for product storage using air that is bent and fused on both side edges, and has an opening for product storage between the edge portions of the sheet member on the surface side, and holds the product by expanding the air layer It is characterized by.

  Further, the present invention is characterized by a product storage cushioning material using air in which the innermost material forming the outer layer and the inner layer has the same thickness.

  Further, the present invention is characterized by a product storage cushioning material using air in which the outer layer is a laminate of a nylon sheet and a polyethylene sheet and the inner layer is a laminate of a polyethylene sheet, a nylon sheet and a polyethylene sheet.

  Further, the present invention is characterized by a product storage cushioning material using air attached so as to sandwich the air insertion device with a flat check valve in the opening.

  Further, the opening is characterized by a product storage cushioning material using air formed at a position of about 1/5 to 9/20 from one bent portion toward the center.

  Further, the present invention is characterized by a product storage cushioning material using air, in which the internal fusion part is a rod-like fusion part and bulge fusion parts on both ends thereof.

  Further, the present invention is characterized in that the product storage cushioning material uses air in which the corners serving as the end portions of the both side edges are non-fused portions.

  Further, the product to be stored is characterized by a product storage cushioning material using air that is prepackaged with a packaging sheet provided with a cross-sectional wave-shaped buffer layer having elasticity on one side of the sheet.

  Further, the present invention is characterized by a product storage cushioning material using air formed by forming incisions on both side edges of the packaging sheet.

  Since the cushioning material for product storage using air of the present invention can be packed by surrounding the entire product with an air layer, the air in the air layer acts uniformly on the product. This makes it possible to prevent the product from being damaged from external vibrations and shocks.

  Also, in the air transportation of products, it is possible to withstand about 0.3 atm without breaking the part, especially by considering the lamination and fusion part of inner and outer layers, the conventional about 0.7 atm ( The air pressure inside the air cargo is usually 0.79 atm.

  Further, the product can be inserted into a bag-like product formed of a sheet member having an air layer, and the air layer can be expanded to achieve the function of the product as a cushioning material. This eliminates the need for a cushioning material having a mold that matches the material and each product, and makes it possible to greatly reduce the amount of material used.

  Further, the sheet member can be used repeatedly, and the amount to be discarded is greatly reduced, which is extremely effective as an environmental measure.

  Furthermore, since the air in the air layer is not inserted when not in use, it can be stored in an overlapping manner, and an extremely efficient storage form can be obtained regardless of location.

  In addition, the position of the opening for storing the product is shifted from the center part of the main body to about 1/5 to 9/20 from one bent part toward the center part, so that the product can be easily inserted. Workability can be improved.

  In addition, the shape of the internal fusion part that fuses the sheet members to each other is the rod-like fusion part and the bulge fusion part on both ends thereof, so that the stress acting on the part is dispersed by the internal pressure of the air layer. The sheet member is no longer cracked from the portion.

  In addition, by making the inner layers facing the sheet member thicker and the same thickness, it is possible to withstand the internal pressure, and there is no risk of the other layer moving to one layer and being damaged.

  Furthermore, by providing the non-fused portions at the four corners of the bag-like material, it becomes possible to disperse the internal pressure acting on the portion, and to prevent the portion from being damaged.

  In addition, before the product is stored in the product storage cushioning material using air, it is possible to transport the product more safely by packaging it in advance with a flexible packaging sheet.

  The cushioning material which accommodates a product was implement | achieved by the flexible sheet | seat member which formed the appropriate number of internal fusion parts in the outer layer and inner layer which consist of several layers, and provided the air layer.

FIG. 1 is a developed plan view of a cushioning material for product storage using air according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is an enlarged sectional view of the end portion.
A sheet member 1 forming a cushioning material for storing products using air has a laminated structure including an outer layer 2 that is an outer side, an intermediate air layer 3, and an inner layer 4 that is an inner side. The outer layer 2 has a laminated structure composed of a nylon sheet 5 and a polyethylene sheet 6 inside thereof. On the other hand, the inner layer 4 has a laminated structure including a polyethylene sheet 7, a nylon sheet 8 inside thereof, and a polyethylene sheet 9.

  As an example of the thickness of each layer of the above laminated structure, the outer layer 2 is a nylon sheet 15 microns and an inner polyethylene sheet 60 microns, and the inner layer 4 is a polyethylene sheet 40 microns, a nylon sheet 15 microns, and an inner polyethylene sheet 60 microns. It is said.

  The outer layer 2 and the inner layer 4 form a peripheral fused portion 10 by heat-sealing inner polyethylene sheets facing each other at the peripheral edge of the sheet member 1. As shown in FIG. 3, the polyethylene sheet layers to be fused to each other have the same thickness and are thicker than the other layers, so that they are firmly fused.

  Further, the sheet member 1 composed of the outer layer 2 and the inner layer 4 has an inner fused portion 11 by heat-sealing inner layers facing each other at substantially equal intervals as shown in FIG. Is forming. The internal fusion part 11 is formed by a rod-like fusion part 12a and a bulging fusion part 12b, and the rod-like fusion part 12a is formed to extend in a short direction perpendicular to the longitudinal direction of the sheet member, In the state where there is a gap between the peripheral fusion portion 10 in the longitudinal direction, the bulging fusion portions 12b are formed at both ends thereof.

  The width of the rod-like fused portion 12a is about 10 mm, and the diameter of the bulged fused portion 12b is about 20 mm to 30 mm. As a result of the experiment, about 20 mm was optimum.

  Further, a non-fused portion 13 is formed in a part of the peripheral fused portion 10, and an air entrance / exit to the air layer 3 between the outer layer 2 and the inner layer 4 is formed. A flat air insertion device 14 with a check valve is sandwiched between the inner and outer layers at the air inlet / outlet.

The sheet member 1 having the above configuration is bent along the BB line and the CC line shown in FIG. FIG. 4A is a plan view and FIG. 4B is a cross-sectional view showing the bent state.
The side edge portions of the opposed inner layers 4 that are folded and overlapped are heat-sealed to form a side edge fusion portion 15. Thereby, the right and left end edges of the sheet member 1 are opposed to each other, and a bag-like object in which the portion becomes the opening 16 is formed.

  The position of the opening 16 at the end edge is set to a position of about 1/5 to 9/20 from one bent portion toward the center, that is, a position eccentric from the center. Moreover, it is convenient to put in and out the product by providing an interval of about 1 mm between the opposed positions.

  As described above, the side edge fusion part 15 is heat-sealed as described above in a bag-like product, but the side edge part of the part forming the four corners is a non-fusion part 17. The length of the non-fused portion 17 is substantially the same as or slightly longer than the distance from the left and right edge portions of the bag-like material to the inner fused portion 11.

  In the state of the bag-like product, products having various sizes and shapes are inserted from the opening 16. Since the opening 16 is formed large, for example, when the size of the bag-like object is 410 mm × 380 mm, it is possible to insert a product having a size of about 340 mm square close to the size of the opening 16. Become.

  After inserting the product, air is inserted into the air layer 3 from the air insertion device 14. The inserted air fills between the peripheral fusion part 10 and the internal fusion part 11 and causes the air layer 3 to bulge.

  Since the sheet member 1 has flexibility, the inner layer 4 is formed with an air layer 3 bulging so as to match the outer shape of the product inserted and disposed inside, and the outer layer 2 includes the peripheral fusion part 10 and the inner layer 4. It will bulge from the fused part 11 as a base point.

  Since the gap between the peripheral fusion part 10 and the inner fusion part 11 and the gap between the inner fusion parts 11 are formed at substantially the same distance, the vertices of outward bulge have substantially the same height. Therefore, no matter what product is inserted, it is surrounded by the bulging air layer, and the entire bag-like object has a function as a cushioning material.

  Since the bulging fused portion 12b formed at both ends of the rod-like fused portion 12a forming the inner fused portion 11 has an arc shape with an outer shape formed larger than the width of the rod-like fused portion 12a, the air layer 3 Even if the pressure applied to the outer layer 2 and the inner layer 4 in accordance with the swelling of the outer layer 2 acts so as to peel off the portion, a peeling force acts on the entire circumference of the arcuate fusion portion 12b. Thus, a large force is dispersed by increasing the total length of the portion.

  Usually, when the both end portions are formed with the same width as the rod-like fused portion 12a, the peeling force to the portion concentrates and cracks are likely to occur. In the present embodiment, the outer periphery of the fusion part has an arc shape and is bulged from the rod-like fusion part 12a, so that the stress can be dispersed.

  Further, as shown in FIG. 5, the flexible sheet member 1 is in accordance with the introduction of air in any product such as the thin product in FIG. 5 (a) and the thick product in FIG. 5 (b). It is possible to accommodate the storage of the product by the elongation of. Even if the product is not installed in the central part at the time of insertion, it is pushed by the air pressure toward the corner and is located in the central part. Then, the product is stabilized by being surrounded by an air layer.

  The product can be taken out by opening a hole in the sheet member with a cutter knife or the like and destroying the cushioning material using air, but by inserting a tubular body such as a straw into the check valve of the air insertion device. The air can be extracted without destroying the cushioning material using the air, and the product can be repeatedly used by removing the product from the opening 16.

  Fig.6 (a) has shown the top view of the packaging sheet 18 which wraps this product beforehand before accommodating a product. As shown in the cross-sectional view of FIG. 6B, the packaging sheet 18 is a single-sided cardboard material that forms a flute portion 20 as a cushioning layer having a corrugated cross section having elasticity on one surface side of the sheet 19. An appropriate number of cut portions 21 that are orthogonal to the inside from the side edge portions are formed in the peripheral portion. In the embodiment, five cut portions 21 having different cut depths are formed at two positions on each edge in the longitudinal direction. An appropriate number of the notches 21 can be provided as necessary.

FIG. 7 shows a state in which the packaging sheet 18 is wound around the product W. For example, if there are sharp protrusions on the outer part of the product, they may be destroyed if they are stored in the product storage cushion using direct air. By wrapping the flute 20 side toward the product W side, the surface can serve as a cushioning material.
Further, when air is inserted into the air layer 3, the cut portion 21 is relatively weak, so that the packaging sheet 18 is deformed inward by the portion, and as shown in FIG. It will stick to the side.

  As described above, by wrapping the product W with the wrapping sheet 18 in advance, the product W can be transported more safely.

  Further, when packaging with the packaging sheet 18, a hard sheet 22 that is slightly larger than the product W is attached to the product W, so that the hard sheet 22 responds to an impact such as dropping, and the product directly It is possible to prevent contact and protect the product W.

It is an expansion | deployment top view of the shock absorbing material for product storage using the air of this invention. It is sectional drawing of the AA line of the same FIG. It is an expanded sectional view of the end part. It is a top view of the shock absorbing material for product storage using the air of this invention. FIG. It is a perspective view of the shock absorbing material for product storage using the air of this invention which stored the thin product. It is a perspective view of the shock absorbing material for product storage using the air of the present invention which stored a thick product. It is a top view of the sheet | seat for packaging. FIG. It is a perspective view which shows the state which packaged the product with the sheet | seat for packaging.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet | seat member 2 Outer layer 3 Air layer 4 Inner layer 5, 8 Nylon sheet 6, 7, 9 Polyethylene sheet 10 Peripheral fusion part 11 Internal fusion part 12a Rod-like fusion part 12b Expansion fusion part 13 Non-fusion part 14 Air Insertion device 15 Side edge fusion part 16 Opening part 17 Non-fusion part 18 Packaging sheet 19 Sheet 20 Flute part 21 Cut part 22 Hard sheet

Claims (9)

  A flexible sheet member is formed by forming an appropriate number of internal fused portions between outer layers and inner layers consisting of several layers at substantially equal intervals to provide a communication air layer, and the sheet members are bent to form both side edges. The product storage buffer using air, wherein the product is held by expanding the air layer, with the portion being fused, and the space between the sheet member edge portions on the surface side being an opening for product storage Wood.   The cushioning material for product storage using air according to claim 1, wherein the innermost material forming the outer layer and the inner layer has the same thickness.   The cushioning material for product storage using air according to claim 1 or 2, wherein the outer layer is a laminate of a nylon sheet and a polyethylene sheet, and the inner layer is a laminate of a polyethylene sheet, a nylon sheet and a polyethylene sheet.   The product-containing cushioning material using air according to any one of claims 1 to 3, wherein the air insertion device with a flat check valve is sandwiched in the opening.   The cushioning material for product storage using air according to any one of claims 1 to 4, wherein the opening is formed at a position eccentric from the center.   6. The product-containing cushioning material using air according to claim 1, wherein the internal fusion part is a rod-like fusion part and a bulge fusion part on both ends thereof.   The cushioning material for product storage using air according to any one of claims 1 to 6, wherein a corner portion serving as an end portion of both side edges is a non-fused portion.   The air according to any one of claims 1 to 7, wherein the product to be stored is prepackaged with a packaging sheet provided with a cushion layer having a cross-sectional wave shape having elasticity on one side of the sheet. Used product storage cushioning material.   The cushioning material for product storage using air according to claim 8, wherein cut portions are formed inward on both side edges of the packaging sheet.

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