JP2007022579A - Cushioning material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cushioning material that can be easily formed into a complicated solid shape and is low in cost. <P>SOLUTION: The cushioning material has hollow projections 4 projecting from a flat face 3. The flat face 3(3a, 3b, 3c) is made of corrugated paper board. Each projection 4 is made of a pulp mold material formed using a pulp mold. Each projection 4 is inserted and fixed into a through-hole 3d made in the flat face 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cushioning material used as a packaging cushioning material for an object to be cushioned.

Conventionally, as disclosed in Patent Document 1, for example, there is a packaging cushioning material made of pulp mold material formed by adsorbing a pulp mold slurry obtained from waste paper such as newspaper and the like through a dehydration, pressing, and drying process. It is used as a packing cushioning material for electrical equipment.
JP-A-10-194346

  However, as in the prior art, when the cushioning material is integrally formed of the pulp mold material, there is a problem that the cost is increased, and it is difficult to form a complicated three-dimensional shape.

  The present invention has been devised in view of the above-described conventional problems, and provides a cushioning material that can be easily formed into a complicated three-dimensional shape at a reduced cost. A cushioning material for a buffered object having a hollow projecting portion protruding from the surface, wherein the flat surface portion is made of corrugated cardboard, and the projecting portion is made of a pulp mold material formed by pulp mold.

  A second aspect of the present invention is that the protruding portion is inserted and fixed in a through hole formed in the flat portion.

  According to a third aspect of the present invention, there is provided a cushioning material for a buffered object having a hollow projecting portion projecting from a flat surface portion, wherein the projecting portion is covered with a separate projecting portion, and the projecting portion has a plurality of stacked structures It is that.

  The cushioning material of the present invention includes a hollow protrusion protruding from the flat portion, the flat portion is made of cardboard, and the protrusion is made of a pulp mold material formed by pulp mold, so that the flat portion is made of cardboard. Therefore, the cardboard can be easily bent into a complicated three-dimensional shape, and the whole can be formed at a low cost.

  In addition, by inserting and fixing the protrusions into the through holes formed in the flat part, the protrusions molded in the pulp mold can be inserted into the through holes of the flat part and integrated well, making it easy to manufacture. Thus, the manufacturing cost can be reduced.

  Also, it has a hollow protrusion protruding from the flat part, and the protrusion is covered with a separate protrusion so that there is no space for protruding a large number of protrusions. In some cases, a double or triple multi-layered structure with a separate protrusion on the protrusion can provide twice or three times the strength, ensuring sufficient buffering performance. Become.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 exemplifies a case where the cushioning materials 2 and 2 are covered and packed on both ends in the longitudinal direction of the gas table 1 which is a buffered object, and the cushioning material 2 has side surfaces 3b and 3b on both sides of the bottom surface 3a. The toe surfaces 3c and 3c are raised on the short side to form a three-dimensional box shape, and a plurality of protrusions 4, 4 and 4 protrude inside as shown in FIG. Then, the tips of the projections 4, 4 and 4 are brought into contact with the gas table 1 to perform a buffer function, and a number of projections 4, 4, and 4 corresponding to the mass of the gas table 1 are formed to project. It is a thing. Each protrusion 4 is formed in a hollow frustoconical shape reduced toward the tip side.

In addition, the cushioning material 2 assembled in a three-dimensional box shape is a pulp mold in which the flat surface portion 3 forming the bottom surface 3a, the side surface 3b, and the toe surface 3c is formed of a corrugated cardboard, and only the protrusion 4 is formed by pulp molding. Consists of materials.
The corner portion C in FIG. 2 is formed by a member as shown in an exploded view in FIG. 3, for example.

  That is, in FIG. 3, folding planes 3e and 3e are formed on the flat surface portion 3 made of a corrugated cardboard, and the folding sections 3e and 3e can be bent and assembled into a three-dimensional box shape. In FIG. 3, four through-holes 3d, 3d, 3d, 3d are formed in the corner portions in FIG. 3 respectively on the bottom surface 3a, the side surface 3b, and the toe surface 3c. In the holes 3d, 3d, 3d, 3d, protrusions 4, 4, 4, 4 made of pulp mold material are inserted and fixed from the back side.

  For example, four protrusions 4, 4, 4, 4 are formed of a pulp mold material in a shape integrated with the base plate B, and the four protrusions 4, 4, 4, 4 are integrated. Are inserted into the through holes 3d, 3d, 3d, and 3d from the back side, and four protrusions 4 protruding inwardly on the bottom surface 3a, the side surface 3b, and the toe surface 3c are formed as shown in FIG. It is something that can be done.

In addition, if the bulging portions 4b and 4b are integrally formed on the outer periphery of the lower end of each projection portion 4 so as to bulge outwardly, a function of preventing the bulging portion 4b from being inserted into the through hole 3d is provided. The protrusion 4 is firmly fixed to the through hole 3d in an insertion shape.
The four protrusions 4 are integrally formed by integrally forming the base plate part B with the pulp mold material, but may be two or three, and each protrusion 4 may be manufactured without the base plate portion B, and inserted and fixed in the through holes 3d.

The protrusions 4 and the base plate B are formed by pulp molding so that a pulp mold slurry obtained from waste paper is adsorbed to a mold and subjected to dehydration, pressing and drying processes, for example, so that the moisture content becomes 9.1%. It is.
In this way, the protrusion 4 can be formed of a pulp mold material to ensure a good buffer function, and the protrusion 4 can be integrated into the flat portion 3 by being inserted into the through hole 3d and fixed. The flat portion 3 can be appropriately bent at the folding line 3e to be three-dimensional, and even if it is a complicated three-dimensional shape, the three-dimensional shape can be easily secured by the flat portion 3 made of corrugated cardboard, Compared to a cushioning material formed entirely of a pulp mold material, the cost can be reduced because cardboard is used, and it can be formed at a low cost.

  The number of protrusions 4 corresponding to the mass of the object to be buffered 1 is used, but as shown in FIG. 4, four protrusions 4, 4 and 4 protrude on the respective surfaces 3a, 3b and 3c. In such a case, or when the number of the protrusions 4 is further increased, there is a case where there is no space for the protrusions 4 to be protruded, so that sufficient strength can be secured and the number of the protrusions 4 can be reduced. For example, as shown in FIG. 5, two protrusions 4 and 4 are formed to protrude on each of the surfaces 3a, 3b and 3c, and each of the protrusions 4 and 4 has a cross-sectional view of FIG. As shown in FIG. 6, the same shape of the projection 14 can be covered to form a dual-structure projection. In this case, as shown in FIG. 6, the upper surface of the projection 4 fixed by being inserted into the through hole 3d. A gap S is formed between 4a and the upper surface 14a of the covering projection 14 that is further covered. When an impact force from the object to be buffered 1 is applied, the upper surface 14a of the covering protrusion 14 is first crushed to exhibit a buffering function, and then the upper surface 14a of the covering protrusion 14 is applied to the upper surface 4a of the protrusion 4. It is crushed until it comes into contact, and the upper surfaces 4a and 14a come into contact with each other to further increase the strength and increase the buffering function. A buffering capacity can be obtained, and the number of protrusions can be reduced even in a narrow space to ensure good strength, and a buffering function can be sufficiently achieved.

5 and 6 can also be used for a cushioning material in which the flat surface portion 3 and the entire protrusion portion 4 are formed of a pulp mold material. A sufficient buffer capacity can be obtained by reducing the number.
In addition, when another protrusion 14 is further covered on the protrusion 14 to form a protrusion having a triple structure, it has been confirmed that a single protrusion can provide a buffer capacity of three.

It is a perspective block diagram of the state which packed the to-be-buffered object with the buffer material. It is the perspective block diagram which looked at the shock absorbing material of FIG. 1 from the inner side. It is a disassembled perspective view before the assembly | attachment of the flat part made from a corrugated cardboard which comprises a buffer material, and the projection part which consists of pulp mold materials. It is a perspective block diagram of the state assembled | attached and solidified. It is a perspective block diagram at the time of making a projection part into a double structure. It is a longitudinal cross-sectional enlarged block diagram of the projection part of a double structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Buffered object 2 Buffer material 3 Flat surface part 3a Bottom surface 3b Side surface 3c Tooth surface 3d Through-hole 3e Folding curve 4 Protrusion part 4a Upper surface 4b Expansion part 14 Covering protrusion part 14a Upper surface B Base board part S Crevice

Claims (3)

  A cushioning material for a buffered object having a hollow projecting portion protruding from a flat surface portion, wherein the flat surface portion is made of corrugated cardboard, and the projecting portion is made of a pulp mold material formed by pulp molding. And cushioning material.   The cushioning material according to claim 1, wherein the protrusion is inserted and fixed in a through hole formed in the flat portion.   A cushioning material for a buffered object having a hollow projecting portion protruding from a flat surface portion, wherein the projecting portion is covered with a separate projecting portion, and the projecting portion has a plurality of stacked structures. Cushioning material.

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