JP2006232355A - Packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve cushioning performance function and protection performance for an object (1) to be packaged, by improving elastic absorbing force relative to external shock, in terms of a packaging material formed from an elastic material into the shape of a tray that is open on one side and used to cover at least the lower surface of the object to be packaged. <P>SOLUTION: Hollow support legs (24) and (25) partially directly or indirectly supporting the lower surface of the object (1) to be packaged project from the packaging material 1. Through-holes (240) and (250) are made in the base ends of the support legs (24) and (25), respectively. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging material, and can be used, for example, when packaging an object to be packaged such as a water heater or a gas bath.

As this type of packaging material, one described in Patent Document 1 is known.
As shown in FIG. 6, the pair of protective trays (4) and (4) are externally fitted from the upper and lower sides of the water heater (1), which is an object to be packaged, and the outer periphery thereof is attached to a binding band (41). (41) is wound and fixed, and the whole is covered with a heat-shrinkable film (42) and shrink-wrapped.
The hot water heater (1) has a front open body case (10) containing a device main body and a front lid (11) that closes the front open end thereof are joined via a joint flange (17). It has a configuration.
The protective tray (4) is formed by integral molding of synthetic resin so that a plurality of upward surface portions (40a) (40a) and lateral surface portions (40b) (40b) protrude inward as shown in FIG. The upper surface portions (40a) and (40a) partially support the lower surface of the water heater (1), and the horizontal surface portions (40b) and (40b) horizontally position the protective tray (4). It is carried out.
Moreover, the base end of the upward surface part (40a) (40a) formed in the side along the one long side of the protection tray (4) (the side corresponding to the front lid (11) side of the water heater (1)) A concave groove (43) for inserting the joint flange (17) is formed in the vicinity of the portion.

The upward surface portion (40a) (40a) and the lateral surface portion (40b) (40b) are formed in a hollow floating inward from the bottom wall and the peripheral wall of the protective tray (4), so that the water heater (1) When the lower surface of the water heater is placed on the upward surface portions (40a) and (40a), the water heater (1) is supported in a state of floating from the floor through the space. Further, the side surface of the water heater (1) is supported horizontally by the laterally facing surface portions (40b) and (40b) from the peripheral wall of the protective tray (4) through a space. Thus, the upward surface portions (40a) (40a) and the lateral surface portions (40b) (40b) provided on the protection tray (4) are elastically subjected to external impacts from the floor surface side and the outer peripheral side received by the water heater (1). The absorbing function is exhibited, and the water heater (1) is packaged in a state protected from external impact.
Japanese Patent Laid-Open No. 2001-151266 JP 2003-318716 A

In the above conventional one, the upward surface portions (40a) and (40a) and the lateral surface portions (40b) and (40b) of the protective tray (4) are formed in a hollow body shape with a synthetic resin. In the mounted state, a certain degree of elasticity can be expected, but the support surfaces (44) (45) supporting the upward surface portions (40a) (40a) and the lateral surface portions (40b) (40b) are protective trays ( Since it is integrally formed in a direction substantially perpendicular to the bottom wall and the peripheral wall of 4), it is relatively strong and elastic deformation of the support surfaces (44) and (45) themselves cannot be expected.
Therefore, in the state where the water heater (1) is placed on the protective tray (4), when an excessive external impact is applied during transportation or handling, the load caused by the impact is the upward surface portion (40a ) (40a) and the lateral surface portions (40b) and (40b) are received by the water heater (1), and the water heater (1) may be damaged.

In addition, when a horizontal force more than the force absorbed by the lateral surface portions (40b) and (40b) is applied with the joining flange (17) inserted into the concave groove (43), the joining flange (17) There is an inconvenience that the lower ends of the flange (17) and the front lid (11) are deformed.
The present invention has been made in view of such points,
In “Packaging material that is formed in a tray shape that opens to one side from the elastic material and that covers at least the lower surface of the packaged object”, the elastic absorption capacity against external impact is increased, and the cushioning function and protection for the packaged object The task is to improve performance.

[Invention of Claim 1]
The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows: “Hollow supporting legs for directly or indirectly supporting the lower surface of the article to be packaged project at a plurality of locations in the tray. Has been
A through hole is formed in the base end portion of the support leg.
The technical means operates as follows.
When a tray-shaped packaging material is externally fitted to at least the lower surface of the packaged article, the packaged article is partially supported by a hollow support leg and placed in a state where it floats from the floor by the height of the support leg. Is done. Since a through hole is formed in the base end portion of the support leg, the support leg has a shape that is easy to bend in the direction in which the through hole is formed and is easily elastically deformed. Therefore, when a load from above is applied to the support leg due to the load of the article to be packaged or an impact during transportation, the support leg is bent in the formation direction of the through hole by the load. Cushioning properties are improved and impact absorption is increased.
The packaged object may be a packaging mode in which the packaged object is directly placed on the support leg. However, the cushioning property is further enhanced through an intermediate member between the lower surface of the packaged object and the support leg. Also good.

[Invention of Claim 2]
In the invention according to claim 1, “the packaged object is joined by a joining flange in which the main body case and the front lid that closes the front open end thereof are projected outward from the outer periphery of the main body case. A box with a shape,
A part of the support leg is provided close to the rear surface of the joint flange, and a hollow protrusion is provided in the tray located in front of the joint flange,
The part of the supporting legs is provided with a through hole that opens rearward,
The hollow projection is provided with a slit that opens to the front or the top surface ”, and the package includes a body case that is open front and a front lid that closes the front open end. For example, a hot water heater or the like having a shape in which a joining flange for joining the two protrudes from the top, bottom, left and right of the main body case and the front lid can be used. In the tray which comprises a packaging material, a joining flange becomes the aspect pinched | interposed between the support leg made close to the back, and the front hollow protrusion. As a result, when the article to be packaged is moved forward by an external impact, the hollow protrusion having a slit formed on the front or top surface is pushed by the joining flange and bent forward, and conversely, Is moved rearward, a support leg located behind the joint flange and having a through hole formed rearward is pushed backward by the joint flange and bent rearward.

The present invention has the following specific effects.
In the invention according to claim 1, the support leg that receives the packaged object is configured to bend easily in the direction in which the through hole is formed, so that the support leg is deformed as compared with the conventional one in which the through hole is not provided. easy. In other words, the support leg is deformed before the package is deformed by an external impact, thereby increasing the shock absorbing function for the package and improving the protection performance. Further, the support leg itself can be prevented from being damaged by elastically bending the support leg.

  In the invention which concerns on Claim 2, in the case of the to-be packaged object of the shape which the joining flange protruded outside, the said joint flange can be pinched and protected by the said support leg and a hollow protrusion. Even if an external impact in the front-rear direction is applied, the support flange or the hollow protrusion is deformed and absorbs the impact before the joint flange is deformed by the impact, so that the joint flange may be deformed. Absent. Therefore, it is possible to reliably protect the packaged object with the joining flange.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
In the first embodiment shown in FIG. 1, a support member (3) is provided as an intermediate member between the lower surface of the package and the support legs without directly supporting the package with the support legs. The outer cover (2) as the packaging material of the present invention is externally fitted further below the support member (3).
Furthermore, in this embodiment, the support member (3) and the exterior cover (2) are individually covered on the upper surface and the lower surface of the water heater (1), which is an object to be packaged, as shown in FIGS. As shown in FIG.

The upper exterior cover (2) is an inverted version of the lower exterior cover (2), that is, formed vertically symmetrically, and has the same structure. The upper support member (3) is a vertically inverted version of the lower support member (3), and these have the same structure. However, it is sufficient that the upper and lower support members (3) and (3) have the same outer peripheral contour shape, and it is not essential that the other shapes be the same.
The exterior cover (2) is a thin molding resin and is formed in a rectangular tray shape with one opening as shown in FIG.
A band engaging groove for engaging a binding band (41) for packaging (described later) on the outer surface of the pair of long side portions (211) (211) of the wall (21) near the opening in the exterior cover (2). 211a) and (211a) are recessed at an equal distance from the center in the longitudinal direction. In addition, a band engaging groove (212a) is recessed in the outer surface of the central part of the short side parts (212) and (212), and a laterally long hand-holding hole is formed on both sides of the band engaging groove (212a). (22) (22) has been established.

As shown in FIG. 1, hollow support legs (24) and (25) are integrally formed on the bottom wall of the exterior cover (2) along the short sides (212) and (212), respectively, as shown in FIG. The support member (3) is placed on the support legs (24) and (25).
The support legs include a center support leg (25) having an oval top surface located at the center of the short side portion (212), and a pair of corner support legs (both sides) having a circular top surface located on both sides thereof. 24) (24), and the range from each base end to the bottom wall of the exterior cover (2) includes a plurality of rectangular holes (250) (240) ("through-hole" as specified in the invention described above) Is open to the inside.
Since both the support legs (24) and (25) are formed by integral molding with the exterior cover (2) made of synthetic resin, as shown by the two-dot chain line in FIG. 240) can be elastically deformed so as to bend in the opening direction. Thus, when an excessive load is applied from above or below due to an impact during transportation or the like, the support legs (24) and (25) are elastically deformed and bent inward, so that the support legs (24) and (25) ), The shock absorption can be surely performed.

  In this case, as described above, the band engaging grooves (211a) (211a) formed in the pair of long side portions (211) are located at the same distance from the center of the long side, and the wall near the opening (21) A band engaging groove (212a) formed in the pair of short sides (212) is formed in the center in the short side direction, and the four corner support legs (24) (24) are formed on the exterior cover (2). Since the central support legs (25) and (25) are disposed at the center of the short side portion (212), the exterior cover In (2), the shape in plan view is formed in a rotation object that becomes the original shape when rotated 180 degrees around the center point. Therefore, there is no restriction on the directionality of the exterior cover (2).

As shown in FIG. 1, the support member (3) inserted into the exterior cover (2) is composed of a base frame (3a) and a side block (3b) for positioning the device laminated on the short side of the base frame (3a). ing.
The base frame (3a) is in surface contact with a region along the outer periphery of the bottom surface of the water heater (1), and is formed in a rectangular frame shape as a whole. In the present embodiment, in FIG. 1, the appliance support surface (S) hatched along substantially the entire circumference of the substantially rectangular central hole (30) formed in the base frame (3a) is a water heater (1 ) To contact the bottom. Accordingly, the outer peripheral portion having a higher strength than the center of the bottom surface of the water heater (1) is received by the exterior cover (2), which is effective in preventing damage to the water heater (1). As shown in FIG. 3, in the central hole (30) of the lower support member (3), pipe connection ports (15) (15) and water drain plugs (16) projecting from the bottom surface of the water heater (1). Projections such as (16) are located.

Notches (32) and (32) extend from both ends of one long side of the central hole (30), and the notches (32) and (32) are connected to the body case (10) of the water heater (1). A joining flange (17) that protrudes in the vertical and horizontal directions is inserted into the joint portion of the front lid (11) (see FIGS. 1 and 3).
As shown in FIG. 4, in the vicinity of the four corners (34) and (34) of the support member (3), a gap (L) is secured between the outer cover (2) and the long side part (211). When the corner support legs (24) are deformed so as to fall inward by the load of the water heater (1) due to this distance (L), the wall near the opening of the exterior cover (2) The vicinity of both ends (26) of (21) can be allowed to bend inward.
The base frame (3a) and the side block (3b) can be made of various materials such as a resin plate, a resin molded product, a foamed resin plate, a foamed resin molded product, a hard board, a veneer plate, and corrugated paper. .

Next, the actual packaging operation using the packaging material according to the present embodiment will be described.
A plurality of types of support members (3) in which central holes (30) having different shapes and sizes are prepared for each shape and size of the water heater (1) to be packaged are prepared in advance.
From the prepared support members (3), a support member (3) that matches the shape and size of the water heater (1), which is an object to be packaged, is selected, and this is externally fitted to the bottom surface of the water heater (1). Then, the outer peripheral area of the water heater (1) is in surface contact with the appliance support surface (S) along the inner periphery of the base frame (3a) of the support member (3), while the side block formed in an L shape ( 3b) The inner circumference of (3b) comes into contact with the side surface and the back surface of the water heater (1), whereby the support member (3) and the water heater (1) are fitted in the positioning state. Next, when the tray-shaped exterior cover (2) is externally fitted to the support member (3), the top surfaces of all the support legs (24) (24) (25) (25) protruding from the bottom wall Comes into contact with the support member (3). Next, in the same manner, the support member (3) and the exterior cover (2) are fitted on the upper surface of the water heater (1).

Thereafter, the outer sides of the exterior covers (2) and (2) are wound and fixed with the binding bands (41) and (41) made of polypropylene. That is, the binding bands (41) (41) are hung on the band engaging grooves (211a) (211a) (212a) (212a) formed on the outer periphery of the wall (21) near the opening of the exterior cover (2). Then, the binding bands (41) and (41) are wound and the both ends thereof are welded and fixed. Thereafter, the outer side of the package around which the binding bands (41) and (41) are wound is covered with the heat-shrinkable film (42) and shrink-wrapped. This completes the packaging operation.
In this device, the outer peripheral area of the water heater (1) is received by the appliance support surface (S) along the inner periphery of the base frame (3a) of the support member (3), and the base frame (3a) is supported by six. It is configured to be received by the legs (24) and (25). At the base ends of the support legs (24) and (25), rectangular holes (240) and (250) are formed so as to open inward, respectively, and the entire outer cover is made of a material that can be elastically deformed. Therefore, as shown by a two-dot chain line in FIG. 3, it is easily bent inward by a load applied from above or below. Therefore, the load applied when an external impact is applied to the package from above or below during transportation or the like is absorbed by the support member (3) and the elastically deformable support legs (24) and (25). Therefore, the cushioning property for preventing damage to the package is improved.
In the above embodiment, the water heater (1) is externally fitted to the exterior cover (2) via the support member (3). However, as shown in FIG. It may be placed directly on the support legs (24) and (25) of 2).

As described above, the water heater (1) is composed of the main body case (10) and the front lid (11), and the outer periphery of the front open end of the main body case (10) and the front lid (11). ), The main body case (10) and the front lid (11) are integrated.
In this embodiment, the support legs (24) and (25) are all provided in the exterior cover (2) so as to be disposed at positions corresponding to the outer peripheral area of the lower surface of the main body case (10). In addition, the support legs (24) and (25) positioned in front of the outer peripheral area are disposed at positions close to the rear surface of the lower end of the joint flange (17). In addition, a hollow protrusion (21) having a slit (20) open is separately provided on the top surface at a position substantially contacting the front surface of the lower end of the joining flange (17).

  In this structure, the lower end portion of the joint flange (17) is accommodated in a state sandwiched between the hollow protrusion (21) and the support legs (24) and (25), and the base ends of the support legs (24) and (25) are accommodated. As in the first embodiment described above, rectangular holes (240) and (250) that open to the inside of the exterior cover (2) are opened, and the hollow protrusion (21) Since the slit (20) is formed on the top surface, when the water heater (1) is moved backward by an impact from the front, the support legs (24) and (25) are As shown by the dotted line, when the water heater (1) is moved forward by the impact from the rear by bending backward (inward of the exterior cover (2)) to absorb the impact, As indicated by the chain line, the hollow protrusion (21) bends forward to absorb the impact on the joint flange (17). In this way, even when a longitudinal impact is applied to the water heater (1) and the water heater (1) is moved in the longitudinal direction with respect to the exterior cover (2), the lower end of the joining flange (17) Before the portion is deformed, the hollow protrusion (21) and the support legs (24) and (25) are elastically deformed so that the load applied to the lower end portion of the joining flange (17) is absorbed, and the joining flange (17) The lower end portion is protected, and the inconvenience that the joining flange (17) is inadvertently deformed by an external impact can be prevented.

In each of the above embodiments, the water heater (1) is indirectly or directly supported by the support legs (24) and (25) of the exterior cover (2), and the support legs (24) and (25) or the hollow protrusions are supported. Since (21) is configured to bend elastically, the impact received by the water heater (1) during transportation or the like is the hollow of the support legs (24) and (25) and the second embodiment. Since the protrusion (21) is capable of absorbing an impact while being elastically deformed, a large cushioning property in the exterior cover (2) can be expected, and a packaging material with improved buffer performance function and protection performance is provided. Can do.
In addition, although the said embodiment demonstrated hot water heater (1) exemplarily as a to-be packaged object, the packaging material of this invention is used when packaging baths, such as a balance kettle, and other to-be packaged objects. Is also applicable.

Explanatory drawing of the lower packaging material which concerns on embodiment of this invention Explanatory drawing of the upper packaging material which concerns on embodiment of this invention Sectional drawing of the package using the packaging material which concerns on embodiment of this invention Top view of the exterior cover The principal part expanded sectional view which shows other embodiment of this invention. Explanatory drawing which shows the use condition of the conventional packaging material. Explanatory drawing of the conventional packaging material.

Explanation of symbols

(1) ... Water heater (packaged item)
(2) ・ ・ ・ ・ ・ Exterior case (packaging material)
(24) (25) ... Support legs
(240) (250) ・ ・ Rectangular hole (through hole)

Claims (2)

In the packaging material that is formed in a tray shape that opens to one side from the elastic material, and that covers at least the lower surface of the packaged item,
Hollow support legs that support the lower surface of the article to be packaged partially or directly are protruded at a plurality of locations in the tray,
A packaging material, wherein a through hole is formed in a base end portion of the support leg. 2. The packaging material according to claim 1, wherein the article to be packaged is joined by a joining flange in which a main body case and a front lid that closes a front open end thereof are projected outward from the outer periphery of the main body case. Box
A part of the support leg is provided close to the rear surface of the joint flange, and a hollow protrusion is provided in the tray located in front of the joint flange.
The part of the supporting legs is provided with a through hole that opens rearward,
The hollow projection is provided with a slit that opens to the front or top surface.

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