JP2017154390A - Packaging material, production method thereof, and packaged roll-shaped body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging material capable of avoiding a risk of a labor for re-packaging; and to provide a production method thereof, and a packaged roll-shaped body packaged by the packaging material.SOLUTION: Each packaging material A1-A3 has a reinforcement material layer 3 constituted of a linear reinforcement material, only on a part of a region on at least one surface of a sheet material 1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging material for packaging a roll-shaped body made of a synthetic resin, a manufacturing method thereof, and a packaged roll-shaped body packaged with the packaging material.

  Kraft paper produced without undergoing a bleaching process has high strength, and is often used as an envelope for sending articles, packaging materials for various products, and the like. In order to impart waterproofness to such kraft paper, it is composed of a resin layer (usually low density polyethylene (LDPE)) made of synthetic resin by laminating on one side (usually the side to be packaged). Kraft paper (so-called “laminated paper”, hereinafter referred to as “laminated paper”) is often used.

  One of the uses of such packaging materials is a synthetic resin film or synthetic resin sheet wound up in a roll, used for interiors, agricultural materials, marine products, architectural civil engineering materials, and other various industrial materials. Or a laminated product made of a synthetic resin (including metal layers, woven fabrics, non-woven fabrics, knitted fabrics, and mesh-like ones), etc. (hereinafter referred to as “roll shape composed of synthetic resin”) The “body” or simply “roll-like body”) has been mainly packaged and shipped by the above-mentioned laminated paper. Depending on the case, the package shape may be, for example, a thickness of 100 mm to 200 mm, a length of more than 2 m, and a weight of 10 kg to 30 kg. In general, the shipping work has been carried out by a forklift or a plurality of workers, and the transportation has been carried out by a truck or the like. There was a risk of occurrence.

JP 2000-062063 A JP 2004-0775152 A JP-A-60-123349 Japanese Utility Model Publication No.52-1223078 Japanese Utility Model Publication No. 48-010878

  The present invention improves the above-described conventional problems, that is, a packaging material that can avoid the risk of repackaging, a method for manufacturing the packaging material, and a packaged roll packaged by the packaging material. The purpose is to provide.

  In order to solve the above-described problems, the present inventors have examined the use of a packaging material having higher strength than the above-mentioned laminated paper.

  As a packaging material used for packaging a relatively large package, which is required to have higher strength than the above-mentioned laminated paper, a high-strength packaging material using a woven fabric composed of linear reinforcing materials (so-called, "Poly cloth paper" (hereinafter referred to as "poly cloth paper") (Patent Documents 1 to 5) is also known.

  As a result of studies on packaging of synthetic resin films, sheets, and rolls of laminates using these packaging materials, several problems have emerged.

  Here, a specific problem has occurred in the poly cloth paper, although it does not occur in the case of using the laminated paper that has been used conventionally. The linear reinforcing material used in these is made of polyethylene polyethylene (high density polyethylene (HDPE)), but this part is not flat and has some irregularities, unlike the laminated surface of laminated paper. . Therefore, this uneven shape is transferred to the roll-shaped body, and there is a possibility that it is judged as a defect at the delivery destination, particularly in a roll-shaped body such as a sheet that requires an optical flat surface.

  In addition, when a plasticizer is contained in a film or sheet that is a package, there is a concern that the package may adhere to the reinforcing material. These fears and concerns become greater especially when the storage period after packaging is long.

  On the other hand, it has been found that when polycloth paper is used and the surface on which the reinforcing material is not disposed is used as a packaged object side for packaging, the above-mentioned fears and concerns are solved, but other problems arise. In other words, the product label is adhered to the outer peripheral surface or end surface of the packaging material with glue or adhesive during shipping work, but the surface on which these reinforcing materials are arranged has low adhesiveness, so it is difficult to stick and easily peel off. . In addition, since the surface on which these reinforcing materials are arranged is slippery and the handling property is lowered, there is a concern that damage or accidents may occur during shipping work or transportation. Further, there is a possibility that the reinforcing material may be peeled off or the waste of the end material may be generated due to contact between the surfaces on which the reinforcing material is disposed or with other loads, which is not preferable as a package shape.

As a result of these basic studies, the present inventors have reached the present invention.
That is, the packaging material of the present invention is characterized by having a reinforcing material layer composed of a linear reinforcing material only in a partial region of at least one surface of the sheet material.

  Moreover, in the packaging material of this invention, in addition to the said structure, it is rectangular shape or substantially rectangular shape, and has the said reinforcing material layer in the area | region from the one side to the middle facing the said one side. It can be configured.

  Moreover, in the packaging material of this invention, in addition to the said structure, it is rectangular shape or substantially rectangular shape, and 1/3 or more of the distance between the one side and the side facing the one side is 2 / It can be set as the structure which has the said reinforcing material layer in the area | region of 3 or less.

  Moreover, in the packaging material of this invention, in addition to the said structure, the said sheet | seat material can be set as the structure which is kraft paper.

  Moreover, in the packaging material of this invention, it can be set as the structure which has a resin layer in the area | region which has the said reinforcing material layer at least in addition to the said structure.

  The packaged roll-shaped body of the present invention is a packaged roll-shaped body in which a sheet-shaped packaging material is wrapped around the outer peripheral surface of a roll-shaped body made of a synthetic resin, and the packaging material is the present invention. The reinforcing material layer is formed in a portion other than the portion in contact with the outer peripheral surface of the roll-shaped body of the packaging material.

  The manufacturing method of the packaging material according to the present invention includes the center of one short side of the sheet material and the periphery thereof on at least one surface of the belt-shaped sheet material and the periphery of the short side facing the one short side. A reinforcing material layer forming step of forming a reinforcing material layer composed of a linear reinforcing material to obtain a reinforcing material layer forming sheet material, and the reinforcing material in the region where the reinforcing material layer is formed. A sheet material cutting step of cutting the reinforcing material layer forming sheet material in the longitudinal direction of the layer forming sheet material.

  According to the packaging material of the present invention, a roll-shaped film or sheet or the like having a reinforcing material layer composed of a linear reinforcing material only in a partial region of at least one surface of the sheet material. By starting to wrap the packaging material of the present invention on the outer peripheral surface of the article to be packaged from the portion where the reinforcing material layer is not present, the portion having the high-strength reinforcing material is the outermost portion in the packaged state, and therefore is not easily damaged. Packaging becomes possible, and the trouble of repackaging can be avoided.

  Moreover, it is a rectangular shape or a substantially rectangular shape, and the structure having the reinforcing material layer in a region from one side to the side facing the one side, from the side facing the one side. It is possible to make the packaging easier by starting to roll around the outer peripheral surface of the roll-shaped article.

  Further, the reinforcing material layer has a rectangular shape or a substantially rectangular shape, and has the reinforcing material layer in a region that is not less than 1/3 and not more than 2/3 of the distance between the one side and the side facing the one side. By doing so, in a general method of packaging a roll-shaped package, the strength can be improved while avoiding the influence of the reinforcing material layer on the package.

  Further, by using the kraft paper as the sheet material, it is possible to increase the strength of the sheet material itself, thereby further reducing the possibility of repackaging.

  Moreover, by setting it as the structure which has a resin layer in the area | region which has the said reinforcement material layer at least, it becomes possible to raise the intensity | strength as a packaging material more and to provide waterproofness.

  The packaged roll-shaped body of the present invention is a packaged roll-shaped body in which a sheet-shaped packaging material is wrapped around the outer peripheral surface of a roll-shaped body made of a synthetic resin, and the packaging material is the present invention. The reinforcing material layer is formed on the portion other than the portion of the packaging material that is in contact with the outer peripheral surface of the roll-shaped body, and the reinforcing material layer is formed on the roll-shaped body. Durable packaging is possible while avoiding the influence.

  The manufacturing method of the packaging material according to the present invention includes the center of one short side of the sheet material and the periphery thereof on at least one surface of the belt-shaped sheet material and the periphery of the short side facing the one short side. A reinforcing material layer forming step of forming a reinforcing material layer composed of a linear reinforcing material to obtain a reinforcing material layer forming sheet material, and the reinforcing material in the region where the reinforcing material layer is formed. And a sheet material cutting step for cutting the reinforcing material layer forming sheet material in the longitudinal direction of the layer forming sheet material, so that the packaging material of the present invention can be manufactured at a relatively low cost using a general-purpose reinforcing material. Production can be enabled.

It is model sectional drawing which shows three examples of the packaging material of this invention. Fig.2 (a): It is a top view of an example of the packaging material of this invention which showed the cross section in Fig.1 (a). FIG. 2B and FIG. 2C are model sectional views showing other examples of the packaging material of the present invention. It is a model figure explaining an example of the packaging method which packages a roll-shaped object using the packaging material which showed the cross section in Fig.1 (a). It is a model figure explaining an example of the packaging method which packages a roll-shaped object using the packaging material which showed the cross section in FIG.1 (c). It is a model figure explaining an example of the manufacturing method of the lamination intermediate body of the packaging material of this invention. FIG. 6A is a model diagram illustrating an example of a method for producing the packaging material of the present invention from a laminate intermediate. FIG. 5B is a model diagram showing an example of a method for cutting the long product to obtain the packaging material of the present invention.

Hereinafter, the packaging material of this invention is demonstrated using drawing.
Fig.1 (a) is model cross-sectional view which shows an example (A1) of the packaging material of this invention. An example of this packaging material A1 is that a resin layer 2 made of polyethylene (LDPE: low density polyethylene) is formed (laminated) in this example by an extrusion method on one side of a sheet material 1 made of kraft paper. In addition, waterproofing and strength are imparted to the entire packaging material A1. And the reinforcement material layer 3 (it mentions later for details) is provided in a part of upper surface of the resin layer 2 of this packaging material A1, and the intensity | strength of packaging material A1 is raised partially. Note that this cross-sectional view is a model view, and there is a case where the actual cross-section of the packaging material does not have such a clear three-layer structure.

  In this example, kraft paper having high strength is used as the sheet material, but other types of paper can also be used. In addition, as the resin constituting the resin layer, low-density polyethylene was used in the above example, but the present invention is not limited to this, and can be selected as appropriate. Further, if necessary, a mixture of a plurality of resins, etc. Moreover, various additives can also be added.

  In this packaging material A1, a synthetic resin stretched tape (so-called flat yarn; hereinafter referred to as a linear reinforcing material constituting the reinforcing material layer 3 including packaging materials A2 to A5 which are embodiments of the present invention to be described later). , "Flat yarn"). These are made of high-density polyethylene (HDPE), but in the present invention, filaments, strands, tapes, yarns (including twisted yarns) made of various resins, natural fibers, recycled fibers, etc. A linear reinforcing material can also be used, and these may be used in combination.

  In the packaging material of the present invention, when the resin layer 2 is provided, it is not always necessary to provide the entire surface of the sheet material. For example, when the packaging material is pasted (adhered) in the packaging process, it is partially as necessary. It is also possible not to provide the resin layer 2.

  FIG.1 (b) is model sectional drawing which shows other example A2 of the packaging material of this invention. The packaging material A2 has the same configuration as the packaging material A1 except that the resin layer 2 is omitted. At this time, the reinforcing material layer 3 is fixed to the sheet material 1 by adhesion, partial heat fusion, or the like.

  FIG. 1C is a model cross-sectional view showing another example A3 of the packaging material of the present invention. This packaging material A3 is provided with the resin layer 2 only in the portion where the reinforcing material layer 3 is provided.

  FIG. 2A to FIG. 2C show model plan views of the examples A1, A4, and A5 of the packaging material of the present invention as viewed from the surface on the reinforcing material layer 3 side.

  The packaging material A1 in FIG. 2 (a) is the same as that shown in the model cross-sectional view in FIG. 1 (a). The resin layer 2 is formed on one entire surface of the rectangular sheet material 1, and the resin layer The reinforcing material layer 3 is partially laminated on the layer 2 in order. Note that the packaging material of the present invention does not need to be strictly rectangular. For example, the packaging material may have a substantially rectangular shape (trapezoidal shape) in which one side of the rectangular shape is slanted so as to facilitate winding during packaging. it can.

  The reinforcing material layer 3 is provided with 3 yarns per 25.4 mm (horizontal direction in the figure) and 4 wefts (vertical direction in the figure), each having flat yarns as linear reinforcements. The plain woven fabric is fused to the sheet material 1 by the resin of the resin layer 2. However, the linear reinforcing material constituting the reinforcing material layer 3 may be formed by other knitting or the like, or may be fixed to each other by heat fusion or adhesion at an intersection. When the number of linear reinforcements per unit width is increased, a packaging material with high strength can be obtained, and the number of implantations can be selected as necessary.

  FIG. 2B shows an example A4 of another packaging material of the present invention. The reinforcing material layer 4 of the packaging material A4 is composed of linear reinforcing materials (flat yarns) arranged parallel to and spaced apart from each other in the left-right direction in the figure, but the other configuration is the packaging material A1. Is the same. In addition, when providing the resin layer 2, since the reinforcement material layer 4 is fixed to the sheet material 1 by the resin layer 2, in addition to the linear reinforcement material aligned in the left-right direction in the figure, above these, or It is also possible to further increase the strength of the packaging material by arranging a linear reinforcing material so as to cross these reinforcing materials below or above and below.

  FIG. 2 (c) shows an example A5 of the packaging material in which the reinforcing material layer 5 is composed of a flat yarn fabric similar to the packaging material A1. In this example, the reinforcing material layer 5 of the packaging material A5 extends from one side (lower side in the figure) of the rectangular packaging material A5 to a region in the middle of the side facing the one side (upper side in the figure). It is provided only over the entire region up to about one third of the distance between these sides. Here, when a roll-shaped body is packaged, since a packaging material having a length that wraps around twice or three times is usually selected, in the present invention, 1/3 or more of the distance between these sides is 2 or more. It is preferable that a reinforcing material layer is provided in a region of / 3 or less.

  In all of these packaging materials A1, A4 and A5, the reinforcing material layer is provided in a region in the middle of the rectangular packaging material from the lower side to the upper side in the figure, but the reinforcing material layer is formed in a region separated from these sides. May be provided. Moreover, in the packaging material of the present invention, as long as the effects of the present invention are not hindered, in addition to the reinforcing material layer and the resin layer shown above, other layers, for example, films, foils, nonwoven fabrics, etc., or It can be provided partially.

  FIG. 3 shows an example of a method of packaging a roll-shaped body R (see FIG. 3A) using the packaging material A1 of the present invention.

  The packaging material A1 is placed on a packaging work table or the like with the surface on which the reinforcing material layer 3 is provided as an upper surface, and the reinforcing material layer 3 of the packaging material A1 is not provided on the roll-shaped body R that is a packaged object. Put it on the part (the part where only the resin layer 2 is provided) (see FIG. 3B), and wrap the packaging material A1 (see FIG. 3C and FIG. 3D). The roll-shaped body R may be held rotatably on its axis, and the packaging material A1 may be wound around this.

  Eventually, the portion of the packaging material A1 where the reinforcing material layer 3 is provided will be wound, but the length of the portion of the packaging material A1 where the reinforcing material layer 3 is not provided is the outer circumferential surface of the roll R Longer than the length. For this reason, the entire outer peripheral surface of the roll-shaped body R is already protected by the portion where the reinforcing material layer 3 of the packaging material A1 is not provided, and the region where the reinforcing material layer 3 of the packaging material A1 exists is the roll-shaped body R. There is no direct contact with the outer peripheral surface, and it can be continuously wound after that (see FIG. 3E).

  After the end of winding (see FIG. 3 (f)), fold both ends of the packaging material A1 (see FIG. 3 (g)), and if necessary, fix the end of the packaging material A1 with adhesive tape, Affix a product label or a shipping label.

  By packaging in such a manner, the roll-shaped body made of a synthetic resin is a packaged roll-shaped body in which one sheet of the packaging material A1 of the present invention is wrapped and packaged, and the packaging material A1 In a portion other than the portion in contact with the outer peripheral surface of the roll-shaped body R, a packaged roll-shaped body in which the reinforcing material layer is formed is formed. And in such a packaged roll-shaped body, the influence to the roll-shaped body R of the reinforcing material layer 3 can be prevented beforehand, and the reinforcing material layer 3 and the resin layer 2 may be exposed on the surface after packaging. In addition, it is easy to attach a product label or the like.

  In FIG. 4, the example of the packaging method of the roll-shaped body R using the packaging material A3 of this invention in which the resin layer 2 is formed only in the part in which the reinforcement material layer 3 is provided is shown.

  The roll-shaped body R is placed on the back side of the portion of the packaging material A3 where the reinforcing material layer 3 is provided, and the packaging material A3 is wound (see FIG. 4A). At this time, although the reinforcing material layer 3 and the resin layer 2 are on the surface side (see FIG. 4B), a portion where the reinforcing material layer 3 and the resin layer 2 are not formed by continuing to be wound, that is, a sheet It is encased only by the material 1 (see FIG. 4D). Finally, both ends are folded, and the end of the packaging material A3 is fixed with an adhesive tape or the like as necessary. By packaging in this way, the reinforcing material layer 3 and the resin layer 2 are not formed on the surface of the packaged product, so that labeling or the like is easy, and there is no possibility that the reinforcing material will slip during transportation. . In addition, when packaging by the method demonstrated using FIG. 4 in this way, the presence area | region of the reinforcing material layer 3 does not contact the outer peripheral surface of a roll-shaped body directly, without being influenced by the diameter of a roll-shaped body. Can be wrapped.

  Here, an example (lamination method) of the manufacturing method of the packaging material A1 of the present invention will be described with reference to FIGS. In the packaging material A1, the reinforcing material layer 3 is provided in a half region of the one surface. However, the reinforcing material having such a narrow width is not generally supplied and becomes a custom-made product, which is expensive. However, according to the manufacturing method described below, which uses a laminate intermediate having a width twice that of the packaging material to be a product, a reinforcing material having a width generally used in the production of polycloth paper can be used as it is. Can be manufactured.

  As shown in FIG. 5, in this example, a composition for forming a resin layer from a T die (flat die) T on one side of a belt-like sheet material 1 having a width twice that of a packaging material as a product in this example. The resin 2 'is supplied to the entire width of the sheet material 1 and forms the reinforcing material layer 3. In this example, the width of the reinforcing material layer in the packaging material to be a product is double width, for the production of polycloth paper. A reinforcing material 3 ′ having a general width is supplied to the center in the lateral direction of the sheet material 1 and the periphery thereof, and is cooled in contact with the chill roll R 1 to form a laminate intermediate (reinforcing material layer forming sheet material) 6 ( Reinforcement material layer forming step).

  Next, the wound laminate intermediate 6 is drawn out as shown in FIG. 6A, and in this example is cut by the cutter 7 at the center in the short direction so as to be half the width (sheet material cutting). Process). Then, it cut | disconnects so that it may become the length L of the drawing | feeding-out direction, and packaging material A1 of this invention is obtained. For example, as shown in FIG. 6B, this cutting can be performed by winding several times around a roll 9 having a circumferential length L, and then cutting at a position indicated by an outlined arrow. Thus, according to the manufacturing method that passes through the laminate intermediate having the double width of the packaging material to be the product, the packaging material of the present invention can be produced efficiently and at low cost.

  In the above example, the laminate intermediate 6 is wound once after the reinforcing material layer forming step, and then is fed again to perform the sheet material cutting step. However, the sheet material cutting step is not performed after the reinforcing material layer forming step. May be performed directly.

  Although the present invention has been described with reference to the preferred embodiment, the packaging material, the manufacturing method thereof, and the packaged roll-shaped body of the present invention are not limited to the configuration of the above embodiment. For example, in the above-described embodiment, description has been made by exemplifying packaging of a roll-shaped package, but the shape of the package is not limited to a roll. For example, a simple cylindrical body or column Of course, the body may be a cube, a cone, a pyramid, a sphere, or the like.

  A person skilled in the art can appropriately modify the packaging material of the present invention, the production method thereof, and the packaged roll-shaped body according to known knowledge. Of course, such modifications are included in the scope of the present invention as long as the packaging material of the present invention, the manufacturing method thereof, and the configuration of the packaged roll-shaped body are provided.

A1 to A5 Examples of packaging materials of the present invention 1 Sheet material 2 Resin layer 3, 4, 5 Reinforcing material layer 6 Laminated intermediate 7 Cutter 8 Cutting line 9 Roll R Roll-shaped body (packaged object)
R1 chill roller

Claims (7)

  A packaging material having a reinforcing material layer composed of a linear reinforcing material only in a partial region of at least one surface of a sheet material.   2. The packaging material according to claim 1, wherein the packaging material has a rectangular shape or a substantially rectangular shape, and has the reinforcing material layer in a region from one side thereof toward a side opposite to the one side.   It has a rectangular shape or a substantially rectangular shape, and has the reinforcing material layer in a region that is not less than 1/3 and not more than 2/3 of the distance between one side and the side facing the one side. The packaging material according to claim 1 or 2.   The packaging material according to any one of claims 1 to 3, wherein the sheet material is kraft paper.   The packaging material according to any one of claims 1 to 4, wherein a resin layer is provided at least in a region having the reinforcing material layer. In the packaged roll-shaped body in which one sheet of packaging material is wrapped around the outer peripheral surface of the roll-shaped body made of synthetic resin and wrapped,
The packaging material is the packaging material according to any one of claims 1 to 5, and
The packaged roll-shaped body, wherein the reinforcing material layer is formed on a portion of the packaging material other than the portion in contact with the outer peripheral surface of the roll-shaped body. From at least one surface of the belt-shaped sheet material, from the center of one short side of the sheet material and the periphery thereof to the center of the short side facing the one short side and the periphery thereof, from a linear reinforcing material A reinforcing material layer forming step of forming a reinforcing material layer to obtain a reinforcing material layer forming sheet material; and
A sheet material cutting step of cutting the reinforcing material layer forming sheet material in a longitudinal direction of the reinforcing material layer forming sheet material within the region where the reinforcing material layer is formed. Production method.

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