JP2004149288A - Core - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily separate a layer consisting a single material and a layer consisting of a composite material by cutting the circumference of a core comprising the layer consisting of the single material and the layer consisting of the composite material with a cutter knife etc. <P>SOLUTION: The core formed by winding a tape comprises the layer consisting of the single material and the layer consisting of the composite material, and the two layers of the layer consisting of the single material and the layer consisting of the composite material are glued with an adhesive. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a core for winding a sheet-like material such as a web or a linear material such as a thread, and performing transport, storage, and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, paper, resin, inorganic materials such as metal or glass, or a composite material of these materials has been used as a material for a core of a sheet material such as a plastic film or a web or a linear material such as a thread.
For example, when the core is made of paper, the core is hygroscopic, and is greatly affected by environmental conditions. When the humidity is increased, the dimension, shape, and strength of the core are reduced. Also, when winding a highly hygroscopic web, moisture transfer from the core surface to the web occurs. In order to solve such a problem, the outer periphery and the inner surface of the core body are coated with resin laminated paper (see Patent Documents 1 and 2), and the surface layer of the core is coated with a metal deposition film. There is a configuration (see Patent Document 3). Alternatively, in the case of a thin resin film core, a resin is impregnated or coated on the outer peripheral surface of the core in order to improve the surface smoothness of the outer peripheral surface of the core and eliminate wrinkles of the film (Patent Document 4). reference).
[0003]
[Patent Document 1]
JP-B-48-44082 [Patent Document 2]
JP-A-6-20369 [Patent Document 3]
JP-A-56-6864 [Patent Document 4]
JP-A-52-40625
[Problems to be solved by the invention]
However, when the core made of these composite materials is discarded, especially when the core is made of paper, the layers of the paper and the metal-deposited film layer, the layers of the composite material such as the resin laminated paper layer are bonded, Sorting takes a lot of time and effort, so it is not actually recycled into waste paper but incinerated or landfilled.
[0005]
[Means for Solving the Problems]
The invention according to the first means for solving the problems is that a core formed by winding a tape is composed of a layer composed of a single material and a layer composed of a composite material. The core is characterized in that two of the layers are adhered with an adhesive.
[0006]
According to a second aspect of the present invention, there is provided the core according to the first aspect, wherein the layer made of the composite material is constituted by a layer made of a material other than a single material.
[0007]
According to a third aspect of the present invention, in any one of the first and second aspects of the present invention, of the two layers adhered by the adhesive, the inner layer is further inside and the outer layer is further outside. A core is characterized in that the core is non-peelable by a layer and an adhesive.
[0008]
According to a fourth aspect of the present invention, in any one of the first to third aspects, the two layers adhered by the adhesive are partially adhered by an adhesive. Provide a wick.
[0009]
The invention according to a fifth aspect of the present invention provides the core according to any one of the first to fourth aspects, wherein the pressure-sensitive adhesive and the hot melt adhesive are applied to the entire surface of the two layers. provide.
[0010]
The invention according to a sixth aspect of the present invention is characterized in that in any one of the first to fifth aspects of the present invention, chips are spread over the entire surface of the two layers and an adhesive or a pressure-sensitive adhesive is applied. Provide a core.
[0011]
According to a seventh aspect of the present invention, in any one of the first to sixth aspects of the present invention, in order to facilitate the cutting of the outermost layer from the outermost layer to the two layers with a blade, the blade is substantially parallel to the central axis. The core is provided with a groove so as to follow the core.
[0012]
According to an eighth aspect of the present invention, there is provided the core according to any one of the first to seventh aspects, wherein the core has a cylindrical shape.
[0013]
According to a ninth aspect of the present invention, there is provided the core according to any one of the first to eighth aspects, wherein at least one tape is spirally wound.
[0014]
According to a tenth aspect of the present invention, there is provided the core according to any one of the first to ninth aspects, wherein the single material is a layer made of paper.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
FIG. 1 is a perspective view for explaining the configuration of the core according to the first embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG.
The core 1 of the first embodiment has a core 3 formed by laminating a plurality of paper tapes 2 from the innermost layer, as shown in FIG. A layer 5 composed of a paper tape 4 wound around the body 3 and coated with an adhesive on the outer peripheral surface, and a paper tape 6 having an inner peripheral surface releasable from the adhesive of the paper tape 4 wound on the layer 5 It comprises a layer 7 and an outermost layer 9 of a composite material tape 8 wound around the layer 7. For example, as the shape of the core, the inner diameter is 76 mm, the thickness is 5 mm, and the length is 1500 mm. Examples of the paper tape 2 include 0.5 mm paperboard, examples of the paper tape 4 include 0.35 mm paperboard, examples of the paper tape 6 include 0.35 mm paperboard or 0.1 mm kraft paper, and examples of the composite material tape 8. Examples thereof include paper impregnated or coated with a thermosetting resin or a thermoplastic resin, and composite paper obtained by laminating paper and a resin film, metal foil, or the like.
Examples of preferred composite material tape 8 include polyethylene film-laminated paper, polypropylene film-laminated paper, PET film-laminated paper, aluminum-evaporated paper, silica-evaporated paper, and phenol resin-impregnated paper. However, the present invention is not limited to the above-mentioned ones, and any tapes known as this kind of core and used as a tape can be applied.
[0016]
Since the outermost layer 9 of the composite material tape 8 is adhered and fixed to the layer 7 of the paper tape 6 to form the layer 10 made of the composite material, the outermost layer 9 can be prevented from peeling off. 4 is bonded to form a layer 11 made of a single material, so that the core 1 has excellent dimensional stability and strength.
[0017]
FIG. 3 is a perspective view showing a state where the layer 7 and the outermost layer 9 of the core of the present invention are cut open along a straight line on the outer peripheral surface of the outermost layer. The layer 10 made of the composite material shown in FIG. 3 is formed by, for example, cutting a straight line on the outer peripheral surface along a groove 20 (see FIG. 1) provided on the outer peripheral surface parallel to the axial direction of the core 1 with a cutter knife. It is formed. The layer 10 made of the composite material is separated from the adhesive of the layer 5 into the state shown in FIG. 3, and is easily separated into the layer 11 made of a single material and the layer 10 made of the composite material, and is recycled. You. The layer 11 made of a single material is formed by laminating at least one single material tape. The outermost groove 21 is not always necessary.
[0018]
FIG. 4 is a plan view for explaining the method of manufacturing the core.
First, the plurality of paper tapes 2 are spirally wound around the mandrel 30 while the adhesive is applied by the adhesive applying rollers 31 and 33 and the adhesive tank 32.
The paper tape 2 wound around the mandrel 30 is fed forward while being fastened by the endless belt 34.
[0019]
At the end of the endless belt 34, the adhesive tape is applied to the lower surface by an adhesive application roller 35, and the adhesive tape is applied to the upper surface by an adhesive application roller 36. The paper tape 4 is spirally wound on the paper tape 2 on the mandrel 30. Can be wound. Next, the paper tape 6 to which the adhesive or the like is not applied is spirally wound on the paper tape 4 even before the paper tape 4 is wound. Further, before the paper tape 6 is wound, the composite material tape 8 having the adhesive applied to the lower surface by the adhesive applying roller 37 is spirally wound on the paper tape 6. Thereafter, the raw tube 38 is cut into a predetermined length to form a core.
[0020]
In the description of the first embodiment, in order to prevent the outermost layer 9 from peeling off when the web is wound, the outermost layer 9 and the layer 7 are used as the layer 11 made of the composite material. By overlapping the tape 8 of the composite material of the outermost layer 9 as shown in FIG.
[0021]
(2nd Embodiment)
Next, FIG. 6 shows a sectional view of a winding core according to a second embodiment of the present invention. In the second embodiment, the layer 10 made of the composite material is present in the intermediate layer of the core.
As in the first embodiment, a core 3 formed by laminating a plurality of paper tapes 2 from the innermost layer, and a layer 5 composed of a paper tape 4 wound on the core 3 and having an outer peripheral surface coated with an adhesive. A layer 10 composed of a composite material of a tape 8 of a composite material having an adhesive applied to an inner peripheral surface of the paper tape 4 wound around the layer 5 and the adhesive, and a layer 10 composed of a composite material. A layer 13 composed of a paper tape 12 having an inner peripheral surface releasable from the adhesive of the composite material tape 8 wound on the layer 10, and a paper tape 2 wound on the layer 13 laminated to the outermost layer 9 Have been.
[0022]
A layer 10 composed of a composite material laminated on both inner and outer peripheral surfaces with an adhesive is a layer 11 composed of a single material composed of bonded paper tapes 2 and 4 and a layer composed of a single material composed of paper tapes 2 and 12 Since the core 1 is sanded and fixed, the core 1 has excellent dimensional stability and strength.
[0023]
First, a layer 15 made of a single material is separated by cutting the outer surface from the outermost layer 9 to the layer 13 along a straight line on the outer peripheral surface of the outermost layer, and then a layer 10 made of a composite material is cut open to form a composite. It can be separated into a layer 10 made of a material and a layer 11 made of a single material.
[0024]
(Third embodiment)
Next, FIG. 7 shows a sectional view of a core according to a third embodiment of the present invention. The outer peripheral surface of the winding core 1 formed by winding the paper tape 21 around the winding core 1 in a direction perpendicular to the axis of the winding core 1 is impregnated with a resin 22. At least one round, preferably two rounds, of the adhesive layer 23 is formed from the outermost layer of the paper tape 21, and 24 layers of adhesive are formed in the inner layer portion. Since the 23 layers of the adhesive are sandwiched between the 22 layers of the resin and the 24 layers of the adhesive, the core 1 becomes a core excellent in both dimensional accuracy and strength.
[0025]
By cutting out the outer peripheral surface of the outermost layer having two or more pressure-sensitive adhesive layers 23 with a cutter knife as in the first embodiment, the paper tape 21 as a single material and the composite material can be separated. When the pressure-sensitive adhesive layer 23 is applied to the core 1 one or more rounds and less than two rounds, a mark such as printing may be provided on the outer peripheral surface of the outermost layer of the core 1 that is cut out. When the pressure-sensitive adhesive layer 23 is applied two or more times, the outermost surface of any outermost layer of the core 1 can be separated and cut.
[0026]
In the manufacturing method of the third embodiment, in the step of winding the paper tape 2 around the mandrel, the adhesive layer 22 and the adhesive layer 23 may be separately applied to the paper tape 2 by spraying or the like.
[0027]
(Fourth embodiment)
Next, FIG. 8 shows a perspective view of a winding core according to a fourth embodiment of the present invention. The band-shaped portion 53 of the pressure-sensitive adhesive layer of the core 1 is adhered by an adhesive. Thereby, even when the outermost layer and the inner layer are adhered with an adhesive, the core is reinforced by the adhesive, prevented from being turned up, and structurally stable.
[0028]
FIG. 9 is a front view for explaining the method of use. The pressure-sensitive adhesive layer is formed of a mixture 52 of the pressure-sensitive adhesive and a hot melt adhesive such as ethylene vinyl alcohol. The winding core 1 formed as described above is passed through a mold 50 having a ring-shaped opening as shown in FIG. At this time, the core 1 can be ironed by heating only a part of the heater 51 of the mold 50 to a temperature higher than a temperature at which the hot melt adhesive melts. Only the portion where the core 1 and the mold 51 are in contact with each other can be adhered, and only the belt-shaped portion 53 of FIG. 8 is adhered to prevent the surface layer from being turned. The mold 50 may be installed in the area where the raw tube 38 is formed (see FIG. 4) and thereafter.
[0029]
(Fifth embodiment)
Next, FIG. 10 shows a sectional view of a winding core according to a fifth embodiment of the present invention. A core 3 formed by laminating a plurality of paper tapes 2 from the innermost layer, a layer 17 composed of a paper tape 16 wound around the core 3 and having a chip laid on the outer peripheral surface, and a layer 17 wound around the layer 17 And an outermost layer made of a composite material tape 8 coated with an adhesive or a pressure-sensitive adhesive. The chips are short pulp fiber powders and fragments, and can be easily separated between the layers 9 and 17 by laying the chips on the paper surface as shown in FIG. As the adhesive or the pressure-sensitive adhesive, all of those used as known as this kind of core are applicable.
[0030]
In the description of the first embodiment to the fifth embodiment, a core in which a number of layers 11 made of different single materials are stacked, a layer 11 made of a single material and a layer 10 made of a composite material The combination of the tapes such as the wound core is not limited.
[0031]
The shape of the core is not limited to a cylindrical shape, but may be a polygonal cylinder such as a square or a hexagon.
[0032]
Further, the tape is not limited to a tape wound spirally, but may be a tape wound around the circumference in a direction perpendicular to the axial center or a combination thereof.
[0033]
【The invention's effect】
The first invention of the present application is to provide a single material by cutting open the circumference of the core with a cutter knife or the like by adhering two layers of a layer made of a single material and a layer made of a composite material. And a layer made of a composite material can be easily separated.
[0034]
The second invention of the present application is to cut open the circumference of the core with a cutter knife or the like by adhering two layers of a layer made of a single material of the core and a layer made of a material other than the single material, This has the effect of being easily separated into a layer made of a single material and a layer made of something other than a single material.
[0035]
In the third invention of the present application, in addition to the first and second inventions of the present application, despite the presence of an adhesive between the inner and outer layers, a layer further inside or outside the inner and outer layers is formed. Since the core is fixed by the adhesive, it is possible to provide a core having excellent dimensional stability and strength.
[0036]
According to the fourth invention of the present application, since the pressure-sensitive adhesive layer is partially adhered by an adhesive, the outermost layer can be prevented from being turned up, and a structurally stable core is provided.
[0037]
The fifth invention of the present application provides a core that can be easily applied by adding the adhesive and hot melt to the entire surface of the adhesive layer in addition to the effects of the fourth invention of the present application.
[0038]
The sixth invention of the present application provides a core that can be easily applied by laying out chips and applying an adhesive or a pressure-sensitive adhesive to the entire surface.
[0039]
The seventh invention of the present application has an effect that, when the outermost layer outer peripheral surface is cut open, the outermost layer can be easily opened with a cutter knife or the like along a straight groove provided on the outer peripheral surface.
[0040]
The eighth invention of the present application provides a winding core that can prevent a surface paper of the winding core from being displaced due to a force applied from the surface of the winding core and a force concentrated on an edge portion by forming the winding core into a cylindrical shape. I do.
[0041]
A ninth invention of the present application provides a winding core that can be continuously manufactured by winding a tape in a spiral shape, thereby improving productivity.
[0042]
A tenth invention of the present application provides a core excellent in recyclability by using a core made of paper.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining a winding core according to a first embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a perspective view showing a method for separating cores according to the first embodiment.
FIG. 4 is a plan view for explaining the method of manufacturing the core according to the first embodiment.
FIG. 5 is a cross-sectional view for describing a configuration of a core tape according to the first embodiment.
FIG. 6 is a cross-sectional view for describing a configuration of a core tape according to a second embodiment.
FIG. 7 is a cross-sectional view for describing a configuration of a core tape according to a third embodiment.
FIG. 8 is a perspective view for explaining a core according to a fourth embodiment.
FIG. 9 is a front view for explaining a method of manufacturing a core according to a fourth embodiment.
FIG. 10 is a cross-sectional view for describing a configuration of a core tape according to a fifth embodiment.
FIG. 11 is a perspective view showing a method for separating cores according to a fifth embodiment.
[Explanation of symbols]
1 roll core 2, 4, 6, 12, 16, 21 paper tape 3 core 8 tape of composite material 9 outermost layer 10 layer of composite material 11, 15 layer of single material 23 adhesive 24 adhesive

Claims (10)

A core formed by winding a tape is composed of a layer made of a single material and a layer made of a composite material, and two layers of the layer made of the single material and the layer made of the composite material are made of an adhesive. A core characterized by being adhered. The core according to claim 1, wherein the layer made of the composite material is made of a layer made of a material other than the single material. The inner layer of the two layers adhered by an adhesive and the inner layer or the outer layer is further fixed to the outer layer by an adhesive so as to be non-peelable. A core according to any of the above. The core according to any one of claims 1 to 3, wherein the two layers adhered by an adhesive are partially adhered by an adhesive. The core according to any one of claims 1 to 4, wherein a pressure-sensitive adhesive and a hot-melt adhesive are applied to the entire surface of the two layers. The core according to claim 1, wherein a chip is spread over the entire surface of the two layers, and an adhesive or a pressure-sensitive adhesive is applied. A groove is provided on the outer peripheral surface of the outermost layer so that the blade can be easily cut open from the outermost layer to the two layers by a blade so that the blade extends substantially parallel to the central axis. Core. The core according to any one of claims 1 to 7, wherein the core has a cylindrical shape. The core according to any one of claims 1 to 8, wherein the tape is formed by spirally winding at least one piece of the tape. The core according to any one of claims 1 to 9, wherein the single material is a layer made of paper.

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