JP2005255292A - Paper tube for roll core - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To dispose a paper tube by accommodating it in a garbage bag for incineration, by cutting short the paper tube that becomes the roll of a cellophane film, aluminum foil, or the like used for storing food in a kitchen. <P>SOLUTION: Perforations 2, 3 are formed with an appropriate interval axially in the paper tube 1 for roll cores. Or a V-shaped groove 5 and a U-shaped groove 6 are formed in the peripheral direction with an appropriate interval axially in the paper tubes 4, 6 for roll cores. As a result, when the use of the roll materials is completed, the paper tube can be bent at the part of the perforations or grooves for parting, thus cutting the length of the paper tube short, and accommodating the paper tube in a garbage bag for disposal for incineration. At least one round of the starting of the winding of the roller materials wound around the cores is preferably applied to the paper tube. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a paper tube used as a core for rolls such as wraps and aluminum foil used for food preservation in a kitchen, and more specifically, it is possible to fold a remaining core using a wrap or aluminum foil. And a roll core paper tube that can be stored in a garbage bag and discarded for incineration.

Paper cores are usually used as the cores of rolls such as wraps and aluminum foil used for food preservation in kitchens. This paper tube is still short in the case of a roll core such as a household wrap or aluminum foil, and can be stored in a garbage bag as it is and discarded and incinerated. However, since the cores of rolls such as wide wraps and aluminum foil for business use are long, they cannot be stored in the trash bag as they are, so they have to be folded or cut shortly and then stored in the trash bag for disposal. Since the paper tube used for the roll core is generally thick, it requires a lot of force to fold and requires tools and labor to cut it. It became a processing problem. As a technique for forming perforations and grooves for reducing the volume in a paper tube used for the core of a roll, there is a “room temperature shrinkable tube” described in Patent Document 1.
JP 2000-271970 A

  The above-mentioned “cold-shrinkable tube” described in Patent Document 1 is a paper tube used as a roll core in which a plurality of axial perforations and grooves are formed, and a square cut between these grooves or perforations is provided. The diameter of the paper tube is reduced by cutting a piece. Therefore, the length of the paper tube itself is not shortened. Therefore, the present invention makes it easy to dispose after using the roll by forming circumferential perforations and grooves in the paper tube used for the core of the roll at appropriate intervals in the axial direction and enabling axial division. The purpose was to make.

  In order to solve the above problems, the present invention forms one or more perforations or grooves in the circumferential direction at an appropriate interval in the axial direction in a roll core paper tube. The cross-sectional shape of the groove can be U-shaped or V-shaped. In addition, it is preferable to stick at least one round of the winding start of the roll material wound around a core to a paper tube.

  As described above, according to the present invention, when the perforation or groove is formed in the circumferential direction in the paper tube, when the use of the roll material is finished, the paper tube is folded at the perforation or groove portion and divided. It becomes possible. As a result, the length of the paper tube is shortened and can be stored in a garbage bag and discarded for incineration. When the perforations or grooves are formed on the paper tube, the strength of the paper tube is reduced due to the formation of the perforations or grooves when the roll material wound around the core is attached to the paper tube for at least one turn. Can be reinforced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a roll core paper tube according to the present invention. Two perforations 2 and 3 are formed on the paper tube 1 used as the core of the roll material at an appropriate interval in the axial direction. A roll material such as a wrap or aluminum foil is wound around the paper tube 1 formed in this manner and sold to consumers. Consumers who have purchased it can use roll material (not shown) such as wrap or aluminum foil wrapped around the paper tube 1, and once the paper tube 1 is exposed, while supporting both ends of the paper tube 1. By applying a force in the opposite direction to the perforations 2 and 3, the paper tube 1 can be broken at the perforations 2 and 3. The paper tube 1 broken in this way is shortened to one-third of the original length, and can be stored in a garbage bag and easily discarded for incineration.

Although the perforations 2 and 3 are formed in the paper tube 1 in FIG. 1, grooves can be formed as shown in FIGS. 2 and 3 instead of the perforations 2 and 3. In FIG. 2, a V-shaped groove 5 is formed on the surface of the paper tube 4 in the circumferential direction, and the depth of the groove 5 is about 2/3 to 3/4 of the thickness of the paper tube 4. . In FIG. 3, a U-shaped groove 7 is formed in the circumferential direction once on the surface of the paper tube 6, and the depth of the groove 7 is about 2/3 to 3/4 of the thickness of the paper tube 6. . As described above, even when the groove 5 or the groove 7 is formed in the paper tube 4 or the paper tube 6, if the paper tube 4 or the paper tube 6 is exposed after the roll material is used, the portion of the groove 5 or the groove 7 is used. By breaking and shortening the paper tube 4 or the paper tube 6, it is possible to store the paper tube 4 or the paper tube 6 and dispose it.

If perforations or grooves are formed in the paper tube in this way, the strength against bending of the paper tube itself decreases. As a countermeasure, when winding the tip of a roll material such as wrap or aluminum foil around a paper tube with perforations or grooves, at least the first round is pasted on the surface of the paper tube with an adhesive. It is preferable to wear. Alternatively, it is preferable that a sheet-like member different from the roll material is added to the tip of the roll material, and the separate member is attached to the surface of the paper tube for at least one turn via an adhesive. Thus, the strength against bending of the paper tube can be reinforced by sticking the roll material or the like to the surface of the paper tube in a bag shape. In the case of this paper tube, when the roll material such as wrap or aluminum foil is finished and the last one round is exposed, the roll material is further peeled off from the paper tube, and the surface of the paper tube is perforated. After the or groove is exposed, the paper tube is broken at the perforation or groove.

  In addition to roll cores such as wraps and aluminum foil used for food preservation in kitchens, the present invention is paper, vinyl sheets and other roll-like materials used in construction, agriculture, and other industries. It can also be used for a paper tube used for the core.

1 is a perspective view showing an embodiment of a roll core paper tube according to the present invention. It is an expanded sectional view of the roll core paper tube concerning this invention. It is an expanded sectional view of a roll core paper tube concerning the present invention.

Explanation of symbols

1 paper tube

A few perforations

4 paper tubes

5 groove

6 Paper tube

7 groove

Claims (4)

A roll core paper tube characterized in that one or more perforations or grooves are formed in the circumferential direction at appropriate intervals in the axial direction. The roll core paper tube according to claim 1, wherein a cross-sectional shape of the groove is U-shaped. 2. The roll core paper tube according to claim 1, wherein the groove has a V-shaped cross section. The roll core paper tube according to any one of claims 1 to 3, wherein at least one turn of the roll material wound around the core is attached to the paper tube.

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