JP3484725B2 - Packaging method for rolls - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for packaging rolls, and more particularly, to a method for packaging a roll obtained by winding a polymer film, sheet, paper or the like around a hollow core. The present invention relates to a method for packaging a roll-shaped body that can be efficiently packaged for protection from dirt and damage. 2. Description of the Related Art A roll-shaped body is formed by winding a polymer film, sheet, paper, or the like on a hollow core body. As shown in an exploded perspective view of FIG. 2, the peripheral surface of the roll 20 is covered with a protective material 25 such as cardboard and fixed, and protective devices 10 and 10 are attached to both end surfaces thereof. Fixing caps 15 and 15 are attached to the parts to fix the protective equipment. However, in the above method, since an adhesive or an adhesive tape is used for bonding the protective material and fixing the fixing cap, it has been difficult to automate the packaging process. [0003] As a method of eliminating the need for the use of the above-mentioned protective material and fixing cap, a packaging film for covering the core hollow portion of a roll-like body entirely packaged with a packaging material has been proposed. After inserting the protrusion of the protective device into the opening and mounting the protective device, the protective device is mounted on a band passing through the core hollow portion and the peripheral surface of the roll-shaped body to which the protective device is mounted in the longitudinal direction. Has been proposed. However, when the side heat seal portion is formed by vertically wrapping the packaging films protruding from both end surfaces of the roll, the side heat seal is formed so as to cross over the core hollow portion of the roll. In addition, the formation of an opening in the packaging film covering the hollow portion of the core body for mounting the end protector in the next step is hindered, so that a sufficient opening cannot be formed, and the mounting of the end protector becomes difficult. This makes it difficult to reduce the packaging efficiency. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for packaging a roll-shaped body capable of solving the above-mentioned problem and enabling efficient packaging. According to the present invention, there is provided a method for packaging a roll-like body. (1) A packaging film is protruded from an end face of a roll-like body having a hollow core and is wound around a body. (2) a step of heat-sealing, (2) a step of vertically wrapping the packaging films protruding from both end faces of the roll-shaped body, and side heat-sealing so as not to cross the hollow portion of the core of the roll-shaped body; A step of opening a packaging film covering the hollow portion of the core, (4) for a roll having a hole capable of communicating with the hollow portion of the core and capable of covering at least an end surface of the roll. End protector,
(5) A step of attaching two or more bands passing the core body hollow portion and the peripheral surface of the roll-shaped body to which the protector is attached in the longitudinal direction and fixing the protector. Consisting of Hereinafter, the present invention will be described in more detail. The roll-shaped body to be packaged by the present invention is obtained by winding a stretched or unstretched plastic film, paper or the like around a core such as a paper tube, bobbin, plastic core or the like. In the present invention, the size of the roll-shaped body is not particularly limited.
It has a size of ８０80 cm and a length of 30-250 cm. As a film for wrapping the above-mentioned roll, a polymer film which can be blown off by heating is used. Usually, an unstretched polypropylene film, a low-density polyethylene film (LDPE), a stretchable polymer film such as a high-density polyethylene film (LLDPE) is used, and its thickness is not limited because it varies depending on the size of the roll. Usually, it is 80 μm or more, preferably about 100 to 150 μm. FIG. 1 is a schematic view showing a packaging step of the present invention. In the method of the present invention, first, as shown in FIG.
The packaging film 2 is made to protrude from the end face of the roll-shaped body 1 to form a body winding, and the outer peripheral surface of the roll-shaped body is covered, and the end fitting portion is heat-cut and sealed to form a heat-sealed section 3. Then, the packaging films protruding from both end faces of the roll 1 are vertically slid together to cover both end faces of the roll as shown in FIG. 1 (b).
The joined portion is heat-cut and sealed to form a side heat-sealed portion 4. In the present invention, it is important that the side heat seal portion 4 is formed so as not to cross over the core hollow portion of the roll. In the heat-cut and seal, a joint portion of the packaging film is heated and heat-sealed using a nichrome wire, a heater embedding blade, or the like, and an end portion is cut to form a heat-sealed portion. Next, an opening 5 is formed by cutting the packaging film covering the hollow portion of the core of the roll-shaped body with a cutter or the like. In the present invention, since the heat sealing portion of the packaging film is not located on the hollow portion of the core of the roll, the packaging film can be easily and reliably cut by the cutter to form the opening. As the cutter, for example, those shown in the perspective views of FIGS. 4A and 4B can be used. Particularly, when the cutter having the configuration shown in FIG. It is preferable because the protection device can be easily attached in the next step. Next, as shown in FIG. 1 (c), protective equipment 6 is attached to both ends of the roll-shaped body having the above-mentioned opening. As shown in the perspective view of FIG. 3 (a), this protective device has a disk-shaped bottom 11 having a cylindrical projection 12 at the center and a side wall 13 at the periphery of the disk-shaped bottom 11. ,
When this is mounted on a roll-shaped body, a cylindrical projection that fits into the hollow portion of the hollow core body is used. In the present invention, the protruding portion 12 of the protective device is inserted into the opening 5 formed in the packaging film covering the hollow portion of the core of the roll and further into the hollow portion of the core, and at least the disc-shaped bottom portion 11 is inserted. It is mounted so as to cover the end face of the roll. At this time, the opening 14 of the protruding portion 12 of the protective device communicates with the core hollow portion of the roll. Note that, as the protective device, FIG.
When a circular groove 17 is formed at the corner between the disc-shaped bottom and the side wall shown in the perspective view of FIG. In this case, even if the rolled material shifts in the vertical direction due to its own weight, the outer peripheral end of the wound material can move into the annular groove, and buckling occurs in the wound material. Is particularly preferable since the above is suppressed. [0010] Finally, a band passing through the hollow portion of the core of the roll-shaped body and the peripheral surface of the roll-shaped body in the longitudinal direction, which is provided with protective equipment at both ends, is tied together by polymerizing, binding or the like to protect the end. Fix the fixture. As the above band, polypropylene,
Polyvinyl chloride or the like can be used, and the number of bands is not limited. In the present invention, two or more bands, preferably 3 to 5 bands, are suitable. According to the above method, the packaging films protruding from both end surfaces of the roll having the hollow core are vertically slid together, and the side heat sealing is performed so as not to cross the hollow portion of the core of the roll. Therefore, it is possible to easily and reliably open the packaging film covering the hollow portion of the core of the roll-shaped body in the next step. In addition, since the formation of the opening can be performed easily and reliably, the protection device in the next step can be easily mounted. Accordingly, the protection device can be easily and reliably mounted, and the packaging efficiency of the roll-shaped body is improved. [0012] Further, a protective material such as a cardboard used for the conventional packaging and a protective equipment fixing cap are not required.
Packaging costs can be reduced. In addition, the method of the present invention,
Since it is not necessary to use a protective material or a fixing cap, it is not necessary to use an adhesive or an adhesive tape, so that an apparatus used in each step can be manufactured by a relatively simple mechanism. Therefore, the entire process can be automated, and the efficiency of packaging the roll-shaped body can be improved. Hereinafter, the present invention will be described in more detail with reference to examples. Example 1 As shown in FIG. 1 (a), a paper tube having an inner diameter of 7.6 cm
A roll-shaped body 1 having an outer diameter of 37 cm wound around a PET sheet having a width of 37 cm is formed into a 160 cm wide high-density polyethylene (LLDPE)
The film 2 has a thickness of 40 from both end faces of the roll.
The LLDPE film was heat-sealed and sealed with a heater embedding blade to form a heat-sealed portion 3. Then, LLDP protruding from both end surfaces of the roll-shaped body
As shown in FIG. 1 (b), the upper and lower sides of the E film were joined together, and the LLDPE film thus joined was heat cut and sealed in the same manner as above, below the hollow portion of the rolled paper tube, and side-heated. The seal part 4 was formed. Next, an LLD covering the hollow portion of the paper tube of the roll-shaped body
Using a cutter having the configuration shown in FIG. 4A, the PE film was pressed at its four blade tips against the film and cut into a cross to form openings 5. Next, cylindrical projections 12 of the protective device shown in FIG. 1 (c) are inserted into the openings 5 on both end surfaces of the roll having the opening formed therein, and the peripheral wall 13 is formed around the periphery of the roll. It was mounted so as to cover the edge of the surface. Finally, as shown in FIG. 1 (d), three polypropylene bands 7 are tied through the opening of the cylindrical projection of the protective device, the hollow portion of the paper tube, and the peripheral surface of the roll-shaped body, and the protective device is attached. It was fixed to both end faces of the roll. EXPERIMENTAL EXAMPLE When protective equipment was attached to both end faces of 1,000 rolls by the method of the above-mentioned embodiment, there was no mistake in the installation of the protective equipment. In addition, as a comparison, when the side heat seal portion was formed in the hollow portion of the paper tube of the roll and the protectors were attached to both end surfaces of the 1,000 rolls, the mounting error of the protector was 10%. %Occurred. As described above, according to the method for packaging a roll-shaped body of the present invention, it is possible to prevent the mounting errors of the protective devices attached to both end faces of the roll-shaped body, and to efficiently mount the roll-shaped body. Can be packaged. In addition, a protective material such as a cardboard used for the conventional packaging and a protective equipment fixing cap are not required, and the packaging cost can be reduced. Furthermore, since adhesives and adhesive tapes are not used after the packaging film is wound or the protective material is fixed as in the past, the equipment used in each process can be created with a relatively simple mechanism, and all processes are automated. It is also possible to do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a step of packaging a roll-shaped body of the present invention. FIG. 2 is a schematic exploded view showing a conventional roll-shaped package. FIG. 3 is a perspective view showing a configuration of a protective device. FIG. 4 is a perspective view illustrating a configuration example of a packaging material cutter. [Description of Signs] 1 Roll-shaped body 2 Packaging material 3 Heat seal portion 4 Side heat seal portion 5 Opening 6 Protective device 7 Band

Claims (1)

(57) [Claims 1] (1) A step of projecting a packaging film from the end face of a roll having a hollow core, winding the body, and heat-sealing the joined portion, (2) Roll A step of vertically wrapping the packaging films protruding from both end surfaces of the roll and side heat sealing so as not to cross the hollow of the core of the roll, and (3) a packaging film covering the hollow of the core of the roll. (4) An end protector for a roll having a hole that can communicate with a hollow portion of the core and covering at least an end surface of the roll is provided by a roll-like body. (5) A roll comprising a step of hanging two or more bands passing the core body hollow portion and the peripheral surface of the roll-shaped body to which the protective device is attached in the longitudinal direction and fixing the protective device. How to pack the shape.