JP4291877B1 - Roll product protector and packing material using it - Google Patents

Abstract

A protector and packaging material for roll product packaging that can prevent vertical vibrations of the roll product, are lightweight, have high strength, can be made of a single material, and are easy to manufacture.
A shape viewed from the front has a substantially rectangular plate shape, a substantially circular receiving portion 11 that fits with a core tube 16 of a roll product 15 is formed at a substantially central portion of the front surface, and from the center of the upper end. A protector 10 made of corrugated cardboard having a guide groove 12 narrower than the inner diameter of the receiving portion 11 for passing the wire rope 18 to the receiving portion 11. The guide groove 12 may be closed with a closing piece. A packaging material comprising a pair of protectors 10 to be attached to the left and right ends of the core tube 16 of the roll product 15 and a cardboard case for housing the roll product 15.
[Selection] Figure 2

Description

  The present invention relates to a protector that is attached to an end portion of a core tube to protect the end portion and the surface of the roll product when packing the roll product in a case, and a packing material using the protector. In the present specification, unless otherwise specified, the “end portion of the core tube” includes a “cap” inserted into the end portion of the core tube when the core tube does not protrude from the end portion of the roll. In addition, “cardboard” in the present specification includes not only paper cardboard but also synthetic resin cardboard (plastic cardboard) unless otherwise specified. In addition, paper corrugated cardboard is usually a laminated type with two or more intermediate layers bonded to each other through two corrugated intermediate layers (corrugated layers) between two flat paper surface layers. In addition to the corrugated cardboard, a so-called “honeycomb corrugated cardboard” in which corrugated intermediate layers are arranged at right angles to the surface layer is also included (see Patent Document 3). In addition to paper-made honeycomb cardboard, the same shape of synthetic resin-made honeycomb cardboard is also included.

  Synthetic resin films used for large liquid crystal panels and the like are shipped as roll products wound around a core tube. In that case, as shown in FIG. 8, a cylindrical member (cap) 103 made of a synthetic resin is inserted into both ends of the core tube 102 so as not to damage the surface of the roll product 101, and a wire rope is passed through the core tube 102. Transport. At that time, a rectangular protector 105 having a circular hole 104 formed in the center is set on the core tube 102 or the cap 103. The protector 105 is fixed to the roll product 101 with a band made of synthetic resin such as polypropylene, and is accommodated in a cardboard case (see reference numeral 107 in FIG. 9) in that state. In this state, the protector 105 supports the weight of the roll product 101, so that the periphery and both ends of the roll product do not touch the inner surface of the case 107 and are not damaged. Further, the protector 105 protects the side surface of the roll product 101 from the wire rope.

  As such a protector 105, a wooden or synthetic resin panel main body 108 having a circular opening 104a formed in the center as shown in the lower right of FIG. 8, and the inner surface of the panel main body (the side in contact with the roll product) And a pad (pad) 109 made of corrugated cardboard (made of paper or synthetic resin) is used. A circular opening 104 b is also formed at the center of the pad 109. A plywood or medium density fiber board is used for the wooden panel main body 108. For example, two pieces of plywood having a thickness of 15 mm cut to a predetermined size are bonded together, and the central opening 104a is punched. In the case of a synthetic resin, it is molded into a shape having a central opening. The pad 109 is similarly formed by cutting and punching cardboard.

  On the other hand, a packaging material composed of a bottom member that also serves as a pallet that is conveyed by a forklift and left and right support plates that store the roll product in a suspended state has been proposed (Patent Document 1). In this device, a support plate having a substantially U-shaped cutout at the upper end is connected to the bottom member in a foldable manner, and the left and right support plates are connected by side walls. The entire packing material is composed of cardboard provided with a water-resistant coat. A plurality of cardboards are stacked and bonded with a water-resistant adhesive.

  Further, Patent Document 2 discloses a frame-structured roll accommodation box in which left and right side walls are engaged with a bottom member and upper ends of the side walls are connected by a cover. This is formed with a substantially U-shaped notch groove that opens upward from the upper end of the side wall to a substantially central portion, and the side wall also serves as a support plate. This product has a large opening on the front and back due to the structure of production and assembly, and lacks sealing performance. Further, the inside and outside communicate with each other through a notch groove on the side wall. Patent Document 3 discloses a honeycomb corrugated cardboard.

JP 2002-104412 A JP 2003-54557 A Japanese Patent Laid-Open No. 10-230938

  Since the protector 105 shown in FIG. 8 uses the wooden panel main body 108, the strength is sufficient. In addition, since the core tube 102 is supported by the central circular opening 104 via the cap 103, it is possible to prevent vertical vibration of the roll product 101 during transportation or transportation. However, if the core tube 102 or the cap 103 is lifted by a wire rope, the protector 105 cannot be inserted into the core tube 102. Therefore, for example, as shown in FIG. 9, a steel pipe 110 or the like is inserted into the core tube 102, and both ends of the pipe 110 are lifted by the wire rope 111 (hanging step S1). The protector 105 is attached to the core tube 102 (attachment step S3). Further, both ends of the pipe 110 are lifted by the wire rope 111 and accommodated in the cardboard case 107 (accommodating step S4). After storage, the pipe 110 is removed and the lid 107a is closed. The side wall 107b and the lid 107a of the cardboard case 107 are provided with a notch or an opening / closing door so that the pipe 110 can be passed (see FIG. 4).

  Thus, in the conventional protector 105, since the roll product 101 is once mounted on the support member 112 and then the protector 105 is mounted on the core tube 102, handling is extremely complicated. The same applies when the roll 101 is removed from the cardboard case 107. Furthermore, the conventional protector 105 is heavier than corrugated cardboard and the like, and the manufacturing process such as drilling and bonding is complicated. Further, since a plurality of materials of the panel main body 108 and the cardboard pad 109 are combined, it is necessary to separate them at the time of disposal, which is complicated.

  On the other hand, the pallet-use box of Patent Documents 1 and 2 is entirely cardboard, so it is lightweight and does not need to be disposed of separately. Anxiety remains. Also, it is not easy to attach and assemble a large number of cardboards.

  The present invention provides a protector and packaging material for roll product packaging that can prevent vertical vibrations of the roll product, can be easily attached to and detached from the core tube, has high strength, and is lightweight and easy to manufacture. Is a technical issue.

  The protector of the present invention (Claim 1) is a protector attached to the end of a core tube of a roll product, and has a substantially rectangular plate shape when viewed from the front. And a guide groove having a width narrower than the inner diameter of the receiving portion for allowing the suspension wire to pass from the center of the upper end to the receiving portion.

  A closing piece for closing the guide groove may be detachably provided in the guide groove (claim 2). Further, such a protector is preferably made of paper or synthetic resin cardboard (Claim 3).

  A roll product packaging material according to the present invention (Claim 4) is characterized by comprising a rectangular parallelepiped case and any one of the protectors disposed on the opposing inner surfaces of the case.

  In the protector of the present invention (Claim 1), since the central receiving portion and the center of the upper end communicate with each other through the guide groove, the steel pipe inserted into the core tube of the roll product is suspended with the wire rope, It can be mounted around the core tube and can be removed. That is, when the protector receiving part is fitted to the end of the core tube of the rolled product that is lifted and shifted inward in the axial direction, the suspended wire rope can pass through the guide groove, so that the protector is not changed. Can be pushed to the vicinity of the end face of the roll product.

  And since the width | variety of a guide groove is narrower than the outer diameter (inner diameter of a receiving part) of a core pipe, there is no possibility that the protector once attached to the core pipe may fall off. The roll product with the protector mounted on the left and right core tubes can be accommodated in a case such as corrugated cardboard as it is, and the wire rope outside the protector can be easily removed from this state. And the edge part of the core pipe of a roll product can be supported so that an up-and-down vibration may not arise with a protector.

  As described above, the protector of the present invention performs substantially the same function as a conventional protector having a circular hole at the center (see FIG. 8), and is attachable to and detachable from the core tube that is lifted by a wire rope. There is an advantage that it is possible.

  When a closing piece for closing the guide groove is detachably provided in the guide groove (Claim 2), the risk of the wire rope entering the guide groove when the core tube is lifted by the wire rope is reduced. Is done. Moreover, the protector (Claim 3) made of paper or synthetic resin cardboard is lightweight and does not need to be separated at the time of disposal.

  The packaging material of the present invention (Claim 4) is provided with one of the above protectors on the left and right ends of the core tube of the roll product, and is housed in a rectangular parallelepiped case in that state, thereby stabilizing the roll product. It can be stored and transported. Moreover, the operation | work which accommodates the picked-up roll product in a case, and takes out is easy.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the protector of the present invention, FIG. 2 is a perspective view showing a procedure for attaching the protector to a roll product, and FIG. 3 shows a procedure for packing the roll product using the protector of FIG. FIG. 4 is a perspective view showing the accommodating process of the packing procedure of FIG. 3, FIG. 5 is a front view showing another example of a method of passing a wire rope for lifting a roll product through the guide groove of the protector of FIG. FIG. 6b is a front view showing another method of using the protector of the present invention, and FIG. 7a and FIG. 7b are a plan view and a front view showing still another embodiment of the protector of the present invention.

  The protector 10 shown in FIG. 1 has a rectangular outline as a whole, a receiving portion 11 having a circular opening is formed at the center, and a guide groove 12 reaching the receiving portion 11 from the center of the upper end toward the center. Is formed. The receiving part 11 and the guide groove 12 are combined into a keyhole shape. The inner diameter of the receiving part 11 is set to a dimension that fits with the core tube in accordance with the core tube of the roll product to be mounted. The width of the guide groove 12 is considerably narrower than the diameter of the receiving portion 11 so that the wire rope for lifting the roll product can be passed therethrough.

  Such a protector 10 can be manufactured, for example, by cutting a cardboard having a thickness of about 3 to 15 mm into a rectangular shape or punching it, punching out a circular receiving portion 11 at the center, and further cutting out the guide groove 12. it can. You may make it punch the receiving part 11 and the guide groove 12 simultaneously. As the corrugated cardboard, a thick corrugated cardboard having two or more intermediate layers (corrugated) is used. Further, a plurality of cardboards having a thickness of 3 to 8 mm, for example, 2 to 3 can be stacked. In FIG. 1, three cardboards are used. The stacked cardboard is usually bonded with an adhesive. You may join with a double-sided tape or an adhesive tape. In the case of corrugated cardboard with a difference in support strength depending on the direction of folding, such as corrugated cardboard with a corrugated layer sandwiched between two surface layers or plastic corrugated cardboard with many ribs between the two surface layers, The support strength in the vertical direction is increased so that the grooves and ribs are in the vertical direction. The honeycomb corrugated cardboard does not have any strength in bending strength, so any direction is acceptable.

  2 and 3 show a procedure for packing the roll product 15 using the protector 10 of FIG. First, a core material 17 such as a steel pipe is passed through the core tube 16 of the roll product 15, and a wire rope 18 is hooked on the core material 17 to lift the roll product 15 (lifting step S1 in FIG. 3). It can also be suspended through the wire rope 18 on the core tube 16. The lifting height of the roll product 15 is preferably set to such a height that the protector 10 is hardly lifted from the floor surface.

  Next, as shown in FIGS. 2 and 3, the protector 10 is disposed on the left and right ends of the core tube 16 in a suspended state (arrangement step S <b> 2 in FIG. 3). Further, the protector 10 is mounted to the side surface of the roll product 15 so that the receiving portion 11 is fitted to the core tube 16 (see the imaginary line in FIG. 2 and the mounting step S3 in FIG. 3). In this case, the protector 10 is shifted to the vicinity of the end face of the roll product 15 while passing the two wire ropes 18 in a loop shape through the guide groove 12. Therefore, the protector 10 can be mounted deeply while being lifted, and there is no need to temporarily place it on the Y-shaped support member 112 as shown in FIG. After the protector 10 is attached, the guide groove 12 is thinner than the outer diameter of the core tube 16, so that the protector 10 does not fall off. When the core tube 16 is thick and the interval between the wire ropes 18 is large, the wire rope 18 is passed through the guide groove 12 while being squeezed as shown in FIG.

  Next, as shown in the case housing step S4 of FIG. 3, the rolled product 15 with the protector 10 that has been lifted is housed in a case 19 made of cardboard. As shown in FIG. 4, the left and right side walls 19a of the case 19 are formed with notches 19b for passing the lifting core 17 from the upper end to the vicinity of the center. Of the front, rear, left and right lids 20a and 20b, a notch 20c is formed in the lid 20a continuous with the side wall 19a so as to avoid interference with the lifting core material 17. When the cutouts 19b and 20c are formed, it is preferable that the cutouts 19b and 20c are not completely removed and are opened and closed freely by the door pieces 19c and 20d continuous with the crease line formed on the side edge.

  Then, the lid pieces 20a and 20b and the door pieces 19c and 20c are opened, and the roll product 15 and the protector 10 lifted by the wire rope 18 as described above are put in the case 19 as they are. Next, the core material 17 is extracted. Since the both ends of the roll product 15 are covered with the protector 10 after the storage, the end of the roll product 15 is prevented from being damaged by the case 19. Even if the wire rope 18 is lifted through the core tube 16 without using the core material 17, the wire rope 18 hits the protector 10 and does not directly touch the roll product 15, so that the roll product 15 can be protected. Note that the packaging material including the pair of left and right protectors 10 and the case 19 is an embodiment of the packaging material of the present invention.

  Thereafter, the lids 20a and 20b of the case 19 are closed, the door pieces 19c and 20d are closed, the notches 19b and 20c are closed, and the lids 20a and 20b are fixed with tape to complete the packaging. In the packed state, the protector 10 supports the core tube 16 as in the case of the conventional protector, so that the roll product 15 does not contact the inner surface of the case 19. Therefore, the roll product 15 is not damaged. Further, the vibration of the roll product 15, particularly the vertical vibration, is suppressed during conveyance.

  When unpacking, reverse the above. When lifting with the wire rope 18, the protector 10 is lifted together, and then the protector 10 is removed from the core tube 16. At this time, since the guide groove 11 is present, the wire rope 18 does not get in the way and can be easily removed.

  2 to 4, the guide groove 12 of the protector 10 is accommodated in the case 19 with the guide groove 12 facing upward. Since the core tube 16 can be received in a larger area, the roll product 15 can be stably held. However, as shown in FIG. 6a, the protector 10 may be rotated so that the guide groove 12 faces downward and then accommodated in the case. Further, as shown in FIG. 6b, the guide groove 12 may be accommodated in the case in a lateral direction. Thus, when shifting the position of the guide groove 12 from the position of the wire rope, there is no risk of the wire rope entering the guide groove 12 and touching the roll product.

  In the protector 26 shown in FIGS. 7a and 7b, the protector body 27 is formed by stacking a plurality of layers (three layers in the figure) of cardboard. Each layer may be formed of a plurality of cardboards. For example, the outer layer 28 can be formed by stacking two cardboards, and the central layer 29 can be formed by stacking three cardboards. The outer layers 28 and 28 have the same shape as the protector 10 in FIG. 1, and the center layer 29 has the width of the guide groove 12 in FIG. As a result, as shown in FIG. 7a, the protector body 27 is formed with a substantially cross-shaped guide groove 30 when viewed from the upper end. The closing piece 31 is detachably fitted in the cross-shaped guide groove 30. The lower end of the closing piece 31 is formed in an arc shape similar to the receiving portion 12. When the guide groove 12 and the widened guide groove are removed from the cardboard, the closing piece 31 can be easily manufactured by overlapping and joining the extracted pieces.

  In this protector 26, after the protector body 27 is mounted on the core tube of the roll product, the closing piece 31 is inserted into the cross-shaped guide groove 30 from the upper end opening. However, it may be temporarily attached with a double-sided tape or the like as necessary. By inserting and fitting the closing piece 31 having a cross-shaped cross section into the guide groove 30, the guide groove 30 is tightly closed and the strength of the protector 26 is improved. Further, the weight of the roll product prevents the upper left and right portions from moving to the center, and the wire rope does not enter the guide groove 30 when the core tube is lifted by the wire rope.

  The protector of the present invention can use plastic cardboard as well as paper cardboard. In addition to the corrugated intermediate layer, honeycomb corrugated cardboard can also be used. When honeycomb cardboard is used, the strength against bending is increased. In any case, it is preferable that the sheets are made of the same material. As a result, there is no need for separate disposal, and it is easy to reuse and recycle materials.

It is a perspective view which shows one Embodiment of the protector of this invention. It is a perspective view which shows the procedure which attaches the protector of FIG. 1 to roll products. It is process drawing which shows the procedure which packs roll products using the protector of FIG. It is a perspective view which shows the accommodation process of the packing procedure of FIG. It is a front view which shows the other example of the method of passing the wire rope which lifts roll products to the guide groove of the protector of FIG. 6a and 6b are front views showing other usage methods of the protector of the present invention. 7a and 7b are a plan view and a front view showing still another embodiment of the protector of the present invention, respectively. It is a perspective view which shows an example of the conventional protector. It is process drawing which shows the packing procedure of the roll product using the protector.

DESCRIPTION OF SYMBOLS 10 Protector 11 Receiving part 12 Guide groove 15 Roll product 16 Core pipe 17 Core material 18 Wire rope 19 Case 19a Side wall 19b Notch 19c Door piece 20a, 20b Cover 20c Notch 20d Door piece 26 Protector 27 Protector body 28 Outer layer 29 Intermediate layer 30 Guide groove 31 Blocking piece

Claims (4)

A protector attached to the end of a core tube of a roll product,
The shape seen from the front presents a substantially rectangular plate shape, and a substantially circular receiving portion that fits into the core tube is formed at the substantially central portion of the front, and the suspension wire is passed from the center of the upper end to the receiving portion. A protector comprising a guide groove narrower than the inner diameter of the receiving portion.   The protector according to claim 1, wherein a closing piece for closing the guide groove is detachably provided in the guide groove.   The protector of Claim 1 or 2 comprised from the corrugated cardboard made from paper or a synthetic resin.   The packaging material of roll products which consists of a rectangular parallelepiped case and the protector in any one of Claims 1-3 arrange | positioned in a pair on the inner surface which the case opposes.

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