JP6486638B2 - Resin molding material - Google Patents

Description

  The present invention relates to a resin molded material, and more particularly to a plate-shaped resin molded material that is inserted between packages when a plurality of packages are transported using a transport means.

  As a conventional resin molding material, for example, one described in Patent Document 1 is known. The resin molding material described in Patent Document 1 is molded into a flat plate shape, and functions as a cushioning material by being inserted between the plurality of packages, for example, when transporting a plurality of packages using a transportation means such as a truck. To do. In this resin molding material, convex portions are formed on at least a part of the surface other than the main surface along the plurality of loads, and the contact area with the floor surface of the transport means is reduced, so that the space between the plurality of loads is reduced. The insertion is facilitated.

JP 2003-267425 A

  Usually, the resin molding material as described above is used by being inserted by a worker between a plurality of loads in a transportation means such as a truck. The weight of the resin molding material itself becomes the load applied to the transportation means, the ease of handling when the operator grips and handles the resin molding material (workability), and the material cost of the resin molding material In view of this, it is desirable that the resin molding material be reduced in weight.

  This invention is made | formed in view of the said situation, and makes it a subject to reduce the weight of the resin molding material as a buffering material.

  The resin molding material according to the present invention is a plate-shaped resin molding material that is inserted between packages when a plurality of packages are transported using the transport means, and includes a first main surface along the packages, A second main surface on the back side of the main surface is provided, and at least one of the first main surface and the second main surface includes a plurality of convex portions and a plurality of concave portions provided adjacent to the plurality of convex portions. The concavo-convex pattern portion is formed, the convex portion protrudes at a predetermined protruding height from the first main surface or the second main surface, and the concave portion is a predetermined depression than the first main surface or the second main surface. Recessed in depth.

  In this resin molding material, the plurality of convex portions protrude at a predetermined protruding height from the first main surface or the second main surface. For this reason, when the resin molding material is inserted between a plurality of loads, the length obtained by adding the protruding height to the distance (the thickness of the resin molding material) from the first main surface to the second main surface is It becomes the substantial thickness of the resin molding material. Moreover, in this resin molding material, the several recessed part is dented with the predetermined | prescribed hollow depth rather than the 1st main surface or the 2nd main surface. For this reason, compared with the case where a resin molding material is a simple flat form, the quantity of material can be reduced. Therefore, by securing a substantial thickness, the amount of the material can be reduced while maintaining the buffer capacity, so that the resin molding material as the buffer material can be reduced in weight. Further, the material cost can be suppressed by reducing the amount of the resin molding material.

  In the resin molding material which concerns on this invention, the uneven | corrugated pattern part is provided in both the 1st main surface and the 2nd main surface, The 1st main surface of one resin molding material is 2nd of other resin molding materials. In the case of overlapping the main surface, the convex portion on the first main surface may be provided so as to fit with the concave portion on the second main surface. In this case, for example, in the case where one resin molding material is stored on another resin molding material, the resin molding materials are prevented from shifting from each other. Further, by fitting the convex portion on the first main surface into the concave portion on the second main surface, the substantial thickness per sheet when a plurality of resin molding materials are stacked can be reduced, and space saving can be achieved. .

  The resin molding material according to the present invention further includes a grip portion provided along an outer periphery of at least one of the first main surface and the second main surface, and the grip portion is more than the first main surface or the second main surface. It may be depressed at a predetermined depression depth. In this case, for example, when the operator inserts the resin molding material between the packages, the operator's finger is placed on the gripping portion so that the operator can easily hold and handle the resin molding material (work Property) and the resin molding material can be easily inserted between the packages.

  In the resin molding material according to the present invention, the convex portion has a substantially quadrangular pyramid shape, and has a top surface and four side surfaces provided so as to surround the top surface, and the concave portion is Alternatively, it may be provided so as to be surrounded by four side surfaces of the adjacent convex portions. In this case, since the convex portion has a substantially quadrangular pyramid shape, the contact pressure at the portion where the resin molding material comes into contact with the load becomes high, the convex portion is easily bent, and the buffering capacity is expected to be improved. Moreover, since the convex portion bends along the luggage, the resin molding material is less likely to be displaced with respect to the luggage.

  According to the present invention, it is possible to reduce the weight of a resin molding material as a buffer material.

It is a figure for demonstrating the usage type of the resin molding material which concerns on embodiment. It is the whole resin molding material perspective view concerning an embodiment. (A) is a top view which shows the 1st main surface of the resin molding material which concerns on embodiment. (B) is a side view of the resin molding material which concerns on embodiment. (C) is a top view which shows the 2nd main surface of the resin molding material which concerns on embodiment. It is an enlarged view which shows the uneven | corrugated pattern part in FIG.3 (b). (A) is a cross-sectional perspective view which shows the 1st main surface of a resin molding material. (B) is a cross-sectional perspective view which shows the 2nd main surface of a resin molding material. It is the whole resin molding material perspective view concerning a modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted.

  Drawing 1 is a figure for explaining the usage pattern of the resin molding material concerning an embodiment. As shown in FIG. 1, the resin moldings 10 and 11 according to the present embodiment, for example, when a plurality of loads 13 placed on a pallet 12 are loaded and transported on a transport means 14 such as a truck or a freight car. In order to prevent rattling of 13, it is inserted between the luggage 13 and used. The structure of the resin molding materials 10 and 11 will be described with reference to FIGS. In addition, since the resin molding materials 10 and 11 have the same main structure, the resin molding material 10 is demonstrated in the following description.

  FIG. 2 is an overall perspective view of the resin molding material according to the embodiment. As shown in FIG. 2, the resin molding material 10 is a flat resin molding material and has a substantially rectangular planar shape. In the resin molding material 10, the corner 23r is formed to form an arc having a radius of about 30 mm, for example. The planar portion of the resin molding material 10 has outer dimensions of about 1200 mm in the Y direction and about 900 mm in the X direction.

  The resin molding material 10 is molded into a plate shape by foaming a resin material. As a material of the resin molding material 10, for example, a polyethylene resin material is employed. The resin molding material 10 is molded by foaming, for example, a polyethylene resin material at a volume ratio of 50 times (foaming ratio 50 times). The resin molding material 10 has flexibility and can be folded in two. In addition, the material of the resin molding material 10 is not limited to a polyethylene-type resin material, It can select suitably.

  Fig.3 (a) is a top view which shows the 1st main surface of the resin molding material which concerns on embodiment. FIG.3 (b) is a side view of the resin molding material which concerns on embodiment. FIG.3 (c) is a top view which shows the 2nd main surface of the resin molding material which concerns on embodiment.

  As shown in FIGS. 3A to 3C, the resin molding material 10 includes a first main surface 1 along the load 13 and a second main surface 2 on the back side of the first main surface. In the resin molding material 10, the concave and convex pattern portions 20 are formed on both the first main surface 1 and the second main surface 2. The concave / convex pattern portion 20 includes a plurality of convex portions 21 and a plurality of concave portions 22.

  The convex portions 21 are provided so as to be arranged approximately every 100 mm in the X direction and the Y direction. The convex portions 21 are continuously arranged with each other through a portion (connecting portion 21z, see FIG. 5) connected to the convex portion 21 adjacent to the convex portion 21. The convex portion 21 has a top surface 21a and a side surface 21b, and has a substantially quadrangular pyramid shape (substantially a quadrangular pyramid shape) with the apex side cut away by a surface substantially parallel to the XY plane.

  The top surface 21a corresponds to a cut surface by the excision, and has a substantially square shape here. The side surface 21b is provided so as to surround the periphery of the top surface 21a. The side surface 21b is an inclined surface that extends from the top surface 21a to the recess 22 (described later). The side surface 21b is formed into a substantially hexagonal shape by being rounded at a portion connected to the adjacent side surface 21b in the same convex portion 21 and at the connection portion 21z.

  Thus, since the convex part 21 is exhibiting the substantially square frustum shape, the contact pressure in the location where the resin molding material 10 contacts the load 13 becomes high, and the convex part 21 becomes easy to bend, and the buffering capacity is improved. Expected. Further, when the convex portion 21 is bent, the top surface 21 a is bent along the load 13, so that the resin molding material 10 is not easily displaced with respect to the load 13.

  The concave portion 22 is provided adjacent to the plurality of convex portions 21. The concave portion 22 here is surrounded by the side surfaces 21b of the four convex portions 21 including the two convex portions 21 adjacent in the X direction and the two convex portions 21 adjacent to the two convex portions 21 in the Y direction. It is provided as such. Due to the convex portions 21 and the concave portions 22, the concave / convex pattern portion 20 is configured as a wave shape (profile shape).

  An outer peripheral portion 23 is provided at the edge of the resin molding material 10. The outer peripheral part 23 is extended along the outer periphery of the resin molding material 10, for example, the width | variety of the direction orthogonal to the extending direction is about 30 mm. The outer peripheral portion 23 exposes the cut surface 21x and the cut surface 21y of the convex portion 21 so that the convex portion 21 is cut in the Z direction on the inner peripheral side of the outer peripheral portion 23 (see FIG. 2).

  Further, as shown in FIG. 3C, a grip portion 24 is provided along the outer peripheral portion 23 between the concave / convex pattern portion 20 and the outer peripheral portion 23 on the second main surface 2 of the resin molding material 10. ing. The grip part 24 is, for example, a flat part that is recessed at a predetermined depth d from the second main surface 2. Therefore, a step with the depth d is formed at the boundary with the second main surface 2. In the grip portion 24, for example, when the operator inserts the resin molding material 10 between the luggage 13, the operator's finger is hung on the step so that the operator grips and handles the resin molding material 10. Is easier to hold (workability). The recess depth d is about 7.5 mm, for example.

  FIG. 4 is an enlarged view showing the concavo-convex pattern portion in FIG. As shown in FIG. 4, the convex portion 21 protrudes at a predetermined protrusion height h from the first main surface 1 and the second main surface 2. The protrusion height h is, for example, about 7.5 mm. Further, the recess 22 is recessed with a predetermined recess depth d from the first main surface 1 and the second main surface 2. The recess depth d is about 7.5 mm, for example.

  In the Z direction of the resin molding material 10, the thickness L1 of the base portion of the resin molding material 10 is about 30 mm, and the top surface 21 a of the convex portion 21 on the first main surface 1 and the convex portion 21 on the second main surface 2. The thickness L2 between the top surface 21a is about 45 mm. This thickness L2 can be said to be a substantial thickness (thickness as a buffer material) when the resin molding material 10 functions as a buffer material. Thus, by providing the convex part 21 that protrudes at the protrusion height h, while ensuring the thickness as a cushioning material, the concave part 22 that is depressed at the depression depth d is provided, so that the material of the resin molding material 10 is increased. The amount can be reduced.

  Fig.5 (a) is a cross-sectional perspective view which shows the 1st main surface of a resin molding material. FIG.5 (b) is a cross-sectional perspective view which shows the 2nd main surface of a resin molding material. As shown in FIGS. 5A and 5B, the convex portion 21 on the first main surface 1 and the concave portion 22 on the second main surface 2 are arranged in a positional relationship between the front and back sides. Therefore, for example, in the case where the first main surface 1 of one resin molding material 10 is overlapped with the second main surface 2 of another resin molding material 10, the convex portion on the first main surface 1 is on the second main surface. Fits into the recess.

  Specifically, the convex portion 21 has a substantially quadrangular frustum shape, so that the four side surfaces 21b of the convex portion 21 on the first main surface 1 and the four side surfaces surrounding the concave portion 22 on the second main surface 2 are obtained. 21b comes into contact, and movement of the resin molding material 10 in the X direction and the Y direction is suppressed. Accordingly, for example, when one resin molding material 10 is stored on another resin molding material 10 and stored, it is suppressed that the resin molding materials 10 are shifted from each other in the X direction or the Y direction. In addition, the substantial thickness per sheet when the plurality of resin molding materials 10 are stacked by fitting the convex portion 21 on the first main surface 1 into the concave portion 22 on the second main surface 2 is from the thickness L2 to the thickness. Reduced to L1. That is, the substantial thickness per sheet when a plurality of resin molding materials 10 are stacked can be reduced.

  The outer peripheral part 23 has a stepped part 23a, an end face 23b, and a chamfered part 23c. The stepped portion 23a is provided along the outer peripheral portion 23 on the end surface 23b side of the chamfered portion 23c. For example, a step of about 3 mm from the end surface 23b is provided on the first main surface 1 side. When the stepped portion 23 a is provided in this way, the width of the end surface 23 b in the Z direction can be shortened, and the resin molding material 10 can be easily inserted between the luggage 13.

  The chamfered portion 23 c is formed by chamfering over the entire circumference of the outer peripheral portion 23. The chamfered portion 23c is formed in an arc having a radius of about 10 mm on the first main surface 1 side and an arc having a radius of about 15 mm on the second main surface 2 side. When the chamfered portion 23c is provided in this way, the interference between the operator's palm and the resin molding material 10 is reduced when the operator holds the resin molding material 10, so the resin molding material 10 is held. It becomes easy to do.

  As described above, in the resin molding material 10 of the present embodiment, the plurality of convex portions 21 protrude from the first main surface 1 and the second main surface 2 at a predetermined protrusion height h. For this reason, when the resin molding material 10 is inserted between the plurality of loads 13, this protrusion is made at a distance from the first main surface 1 to the second main surface 2 (the thickness L1 of the base portion of the resin molding material 10). The length (thickness L2) including the height h is a substantial thickness of the resin molding material 10. In the resin molding material 10, the plurality of recesses 22 are recessed at a predetermined recess depth d from the first main surface 1 and the second main surface 2. For this reason, compared with the case where a resin molding material is a simple flat form, the quantity of material is reduced. Therefore, by securing the substantial thickness L2, the amount of the material can be reduced while maintaining the buffer capacity, so that the resin molding material 10 as the buffer material can be reduced in weight. Further, the material cost can be suppressed by reducing the amount of the material of the resin molding material 10.

  In the present embodiment, the concavo-convex pattern portion 20 is provided on both the first main surface 1 and the second main surface 2, and the first main surface 1 of one resin molding material 10 is formed on another resin molding material 10. When overlapping the second main surface 2, the convex portion 21 on the first main surface 1 is provided so as to fit with the concave portion 22 on the second main surface 2. In this case, the substantial thickness per sheet when the plurality of resin molding materials 10 are stacked is increased from the thickness L2 to the thickness when the plurality of resin molding materials 10 are stacked by fitting the convex portion 21 on the first main surface 1 into the concave portion 22 on the second main surface 2. It is reduced to L1, and the space can be saved.

  In the present embodiment, a grip portion 24 provided along the outer peripheral portion 23 of the second main surface 2 is provided, and the grip portion 24 is recessed at a predetermined recess depth d from the second main surface 2. In this case, for example, when the operator inserts the resin molding material 10 between the luggage 13, the operator's fingers are hung on the gripping portion 24, so that the operator can hold the resin molding material 10 and hold it. The ease (workability) is improved, and the resin molding material 10 can be easily inserted between the loads 13.

  In the present embodiment, the convex portion 21 has a substantially quadrangular frustum shape, and has a top surface 21a and four side surfaces 21b provided so as to surround the top surface 21a. The recess 22 is provided so as to be surrounded by the four side surfaces 21 b of the adjacent protrusions 21. Thus, since the convex part 21 is exhibiting the substantially square frustum shape, the contact pressure in the location where the resin molding material 10 contacts the load 13 becomes high, and the convex part 21 becomes easy to bend, and the buffering capacity is improved. Expected. Further, since the convex portion 21 bends along the luggage 13, the resin molding material 10 is less likely to be displaced with respect to the luggage 13.

  As mentioned above, although embodiment which concerns on this invention was described, this invention is not restricted to the said embodiment, It deform | transforms in the range which does not change the summary described in each claim, or applies to another thing. Also good.

  For example, in the said embodiment, although the uneven | corrugated pattern part 20 was formed in both the 1st main surface 1 and the 2nd main surface 2 of the resin molding material 10, you may provide only in the 1st main surface 1. FIG. However, it may be provided only on the second main surface 2. That is, it is only necessary that the uneven pattern portion 20 is formed on at least one of the first main surface 1 and the second main surface 2 of the resin molding material 10. Moreover, although the holding part 24 was provided only in the 2nd main surface 2, it may be provided only in the 1st main surface 1 and is provided in both the 1st main surface and the 2nd main surface. May be. The grip portion 24 is provided along the entire outer periphery of the resin molding material 10, but may be provided intermittently.

  In the said embodiment, although the convex part 21 was exhibiting the substantially square frustum shape, the shape of the convex part 21 is not limited to this. For example, like the resin molding material 100 according to the modification shown in FIG. 6, the convex portion 121 may have a substantially conical shape (substantially truncated cone shape) whose apex side is cut away by a surface substantially parallel to the XY plane. . In this case, in the resin molding material 100, the plurality of recesses 122 are recessed at a predetermined recess depth from the first main surface 101 and the second main surface 102. For this reason, compared with the case where a resin molding material is a simple flat form, the quantity of material is reduced. Therefore, by securing a substantial thickness, the amount of the material can be reduced while maintaining the buffer capacity, so that the resin molding material 100 as the buffer material can be reduced in weight. In addition, since the amount of the material of the resin molding material 100 is reduced, the material cost can be suppressed.

  In addition, when the first main surface 101 of one resin molding material 100 is overlapped with the second main surface 102 of another resin molding material 100, the convex portion 121 on the first main surface corresponds to the second main surface. It fits into the recess 122 in FIG. Specifically, the four side surfaces 121b of the convex portion 121 on the first main surface 101 and the four side surfaces 121b surrounding the concave portion 122 on the second main surface 102 are in contact with each other, and resin formation in the X direction and the Y direction is performed. The movement of the mold material 100 is suppressed. Accordingly, for example, when one resin molding material 100 is stored on another resin molding material 100, the resin molding materials 100 are prevented from being shifted in the X direction or the Y direction. Moreover, the convex part 121 in the 1st main surface 101 fits into the recessed part 122 in the 2nd main surface 102, When the some resin molding material 100 is piled up, the substantial thickness per sheet can be reduced, and space saving is possible. Can be realized.

  DESCRIPTION OF SYMBOLS 1 ... 1st main surface, 2 ... 2nd main surface 10, 11, 100 ... Resin molding material, 13 ... Luggage, 14 ... Transportation means, 20 ... Concave-convex pattern part, 21 ... Convex part, 22 ... Concave part, 24 ... Gripping part.

Claims (4)

Placing a plurality of baggage placed on the pallet when transported are loading into transportation means such as trucks or railroad cars, the loaded on transport means and the pallet in order to prevent rattling of the plurality of luggage has been used is inserted so as to intersect with the pallet between the plurality of luggage, a plate-shaped molded resin material a resin material by foaming is molded in a plate shape,
A first main surface along the luggage and a second main surface on the back side of the first main surface;
At least one of the first main surface and the second main surface is formed with a concavo-convex pattern portion including a plurality of convex portions and a plurality of concave portions provided adjacent to the plurality of convex portions,
The convex portion protrudes at a predetermined protruding height from the first main surface or the second main surface,
The said recessed part is a resin molding material which is dented by the predetermined | prescribed hollow depth rather than the said 1st main surface or the 2nd main surface. The uneven pattern portion is provided on both the first main surface and the second main surface,
In the case where the first main surface of one resin molding material is overlapped with the second main surface of another resin molding material, the convex portion on the first main surface is the concave portion on the second main surface. It is provided to fit with
The said uneven | corrugated pattern part has a connection part which is a part which is mutually connected in the part which the said adjacent convex parts protrude in the said predetermined protrusion height among these convex parts. The resin molding material as described in 4. A gripping portion provided along an outer periphery of at least one of the first main surface and the second main surface;
The resin-molding material according to claim 1 or 2, wherein the grip portion is recessed at a predetermined depth from the first main surface or the second main surface. The convex portion has a substantially quadrangular frustum shape, and has a top surface and four side surfaces provided so as to surround the periphery of the top surface,
The resin molding material according to any one of claims 1 to 3, wherein the concave portion is provided so as to be surrounded by four side surfaces of the adjacent convex portion.