JP5090850B2 - Heat-shrinkable cylindrical label and container with cylindrical label - Google Patents

Description

  The present invention relates to a heat-shrinkable cylindrical label having an excellent buffering effect and a container with a cylindrical label.

2. Description of the Related Art Conventionally, heat-shrinkable cylindrical labels (also called cylindrical shrinks, cylindrical sheets, etc.) that mainly heat shrink in the circumferential direction have been used in various fields.
A typical application of the heat-shrinkable cylindrical label is a label application to be attached to a body portion of a beverage container. Such a heat-shrinkable cylindrical label is attached to the container by being externally fitted to the container body and heated.

Moreover, in order to provide heat insulation, the heat-shrinkable cylindrical label by which the foamed resin sheet was laminated | stacked is also known (patent document 1).
The heat-shrinkable cylindrical label containing the foamed resin sheet is preferable because when the container is held by hand from the outer surface of the label, the heat of the container is not easily transmitted to the handle.
JP 2006-193215 A

By the way, a container with a cylindrical label in which the conventional heat-shrinkable cylindrical label is mounted on a container is usually packed in a packing box and used for storage and distribution.
At this time, a cushioning material (for example, a cardboard partition plate) is interposed between adjacent containers with cylindrical labels in the packaging box. In particular, the cushioning material is indispensable for a packaging box for a container that is relatively fragile, such as a glass bottle.
However, the cushioning material is discarded after the container is taken out of the packaging box. For this reason, it is preferable not to use the buffer material as much as possible from the viewpoint of resource saving.

  The objective of this invention is providing the heat-shrinkable cylindrical label which has a heat insulation effect and can function as a buffer material of a container, and a container with a cylindrical label.

The heat-shrinkable cylindrical label of the present invention has a tubular body in which the heat-shrinkable sheet is formed in a tubular shape so that the main heat-shrink direction of the heat-shrinkable sheet is the circumferential direction, and the heat-shrinkable sheet There comprises a foamed resin sheet, strip contraction limiting sheet for restricting the thermal shrinkage of the heat shrinkable sheet are attached to the inner surface of the circumferentially extending and the tubular body of the tubular member, said contraction regulating The sheet is composed of a flexible non-heat-shrinkable sheet having a thickness of 100 μm or more and 2 mm or less, and the circumferential length of the region to which the shrinkage regulation sheet is attached is ½ or more of the circumferential length of the cylindrical body It has a length of, and is characterized by substantially equal before and after heat shrinkage.

The heat-shrinkable cylindrical label of the present invention is attached to a container by being externally fitted to the container and then heat-shrinking.
Such a heat-shrinkable cylindrical label has a belt-like shrinkage restriction sheet arranged on the inner surface of the heat-shrinkable tubular body so as to extend in the circumferential direction of the tubular body. The portion corresponding to the attachment area of the film hardly shrinks. For this reason, the part of the said cylindrical body corresponding to the attachment area | region of a shrinkage | contraction restriction sheet becomes a convex shape which did not stick to a container but protruded away from the container.
Therefore, the heat-shrinkable cylindrical label after heat shrinkage has a close contact area that is in close contact with the outer surface of the container and a protruding area that protrudes from the outer surface of the container, and the protruding area of the heat-shrinkable cylindrical label and the container There is a space between the two.

Since the protruding region of the heat-shrinkable cylindrical label is a portion where a cylindrical body made of a heat-shrinkable sheet protrudes, it can be appropriately deformed by receiving external pressure.
For this reason, the container with a cylindrical label to which the heat-shrinkable cylindrical label is attached is such that the protruding region of the heat-shrinkable cylindrical label is appropriately deformed to the space side even when a foreign object comes in contact from the outside. It can absorb the pressure of foreign matter.
Therefore, the container with a cylindrical label to which the heat-shrinkable cylindrical label of the present invention is attached can be packed in a packing box without using a cushioning material.
Further, such a container with a cylindrical label can well block the heat of the container due to the synergistic effect of the heat insulating property of the foamed resin sheet and the heat insulating property of the space portion between the heat-shrinkable cylindrical label and the container. .

  In a preferred heat-shrinkable cylindrical label of the present invention, the shrinkage restriction sheet is composed of a plurality of sheets, and at least two shrinkage restriction sheets are arranged above and below at a predetermined interval in the vertical direction of the tubular body. Yes.

In the heat-shrinkable cylindrical label, since a plurality of shrinkage regulation sheets are arranged separately above and below the cylindrical body, a plurality of the protruding regions are formed above and below the heat-shrinkable cylindrical label after heat shrinkage. Is done.
Thus, the heat-shrinkable cylindrical label in which a plurality of protruding regions are formed is further excellent in a buffering effect and a heat insulating effect.
In addition, since the plurality of projecting regions are formed separately above and below the heat-shrinkable cylindrical label, a finger can be placed between the upper and lower projecting regions to hold the container with the cylindrical label. Such a container with a cylindrical label is easy to hold, and furthermore, it is possible to prevent the container with a cylindrical label from sliding carelessly from the handle.

In one preferable form, the shrinkage restricting sheet is helically arranged on the inner surface of the cylindrical body.
As described above, in the heat-shrinkable cylindrical label in which the shrinkage restricting sheets are arranged in a spiral shape, the protruding region is formed in a spiral shape after the heat shrinkage.
A container with a cylindrical label to which such a heat-shrinkable cylindrical label is attached is easy to hold and has a slip-off preventing effect as described above.
In addition, when the container with a cylindrical label is rotated in the circumferential direction, the vertical position of the protruding region changes. For example, the protruding region of one cylindrical label container enters the close contact region of the other cylindrical label container. By aligning so as to do, adjacent cylindrical labeled containers can be stacked and placed.

Further, the cylindrically labeled container of the present invention is a container in which a cylindrical body in which the heat-shrinkable sheet is formed in a cylindrical shape so that the main heat-shrinkable direction of the heat-shrinkable sheet including the foamed resin sheet is the circumferential direction. A belt-like shrinkage regulation sheet for regulating thermal shrinkage of the heat-shrinkable sheet is attached in the circumferential direction of the inner surface of the cylindrical body, and the shrinkage-regulation sheet has flexibility the thickness 100μm or 2mm consists of the following non-thermally shrinkable sheet, in the tubular body, the contraction in response to limiting sheet attachment area, and the protruding region protruding outwardly is formed, the peripheral of the projection region The direction length is substantially equal to the circumferential length of the cylindrical body before heat shrinkage , and a space is formed between the protruding region of the cylindrical body and the container.

In the container with a cylindrical label according to the present invention, a protruding region in which a part of the cylindrical body protrudes outward is formed, and a relatively large space is formed between the protruding region and the container. The region can be greatly deformed inward.
Therefore, when a press is received from the outside of the container with a cylindrical label, the protruding region can be appropriately deformed inward (space part side), and the press can be absorbed. For this reason, the container with a cylindrical label of the present invention has an excellent buffering effect, and can be packed in a packing box without using a buffer material, for example.
Furthermore, such a container with a cylindrical label also has a heat insulating effect.

When the heat-shrinkable cylindrical label of the present invention is heat-shrink mounted on a container, a protruding region is formed corresponding to the region where the shrinkage regulation sheet is attached. Since a space portion is generated between the protruding region and the container, the container with a cylindrical label to which the heat-shrinkable cylindrical label of the present invention is attached has a unique effect that the container is hardly damaged by an external impact. Furthermore, there is also a heat insulating effect.
The container with a cylindrical label of the present invention can be packed in a packing box without using a cushioning material, for example.
Moreover, since the container with a cylindrical label to which the preferred heat-shrinkable cylindrical label of the present invention is attached is easy to hold and difficult to slide, it is particularly suitable for users who have a relatively weak grip.

Hereinafter, the present invention will be specifically described with reference to the drawings.
In addition, in this invention, a sheet | seat is the meaning containing what is generally called a film.

In FIG. 1, reference numeral 1 denotes a tubular body 3 in which a heat-shrinkable sheet 2 including a foamed resin sheet is formed in a tubular shape, and a strip-shaped shrinkage regulation sheet 5 attached to the inner surface of the tubular body 3; The heat-shrinkable cylindrical label which has is shown.
The cylindrical body 3 is joined by rolling the heat-shrinkable sheet 2 into a cylindrical shape and overlapping both end portions so that the main heat-shrinking direction of the heat-shrinkable sheet 2 is the circumferential direction X of the cylindrical body 3. By doing so, it forms (the joint part of the said both-ends part is called the center seal | sticker part 4). Examples of the method for joining the side end portions include heat fusion, adhesion using an adhesive or a solvent, and the like.
The cylindrical body 3 has such a property that when heated to a predetermined temperature (shrinking temperature of the heat-shrinkable sheet 2), the entire diameter thereof is reduced (shrinks in the circumferential direction X).
In addition, when the heat-shrinkable sheet 2 is a laminated sheet of a foamed resin sheet and a synthetic resin sheet, it is preferable to form the foamed resin sheet in a cylindrical shape so that the surface of the foamed resin sheet constitutes the inner surface of the cylindrical body 3. .

The shrinkage restriction sheet 5 is a strip-shaped sheet piece that restricts the heat shrinkage of the heat shrinkable sheet 2.
The shrinkage restriction sheet 5 extends in the circumferential direction X of the tubular body 3 and is attached to the inner surface of the tubular body 3. The circumferential length of the region to which the shrinkage restriction sheet 5 is attached is a length that is 1/2 or more of the circumferential length of the cylindrical body 3. The circumferential length of the cylindrical body 3 means the circumferential length of the cylindrical body 3.
Hereinafter, a specific configuration of the heat-shrinkable cylindrical label 1 of the present invention will be described while explaining each component.

The heat-shrinkable sheet 2 has a property (heat-shrinkability) that can be mainly thermally shrunk in one direction within the surface. The heat-shrinkable sheet 2 may be slightly heat-shrinked in the other direction in the plane (a direction orthogonal to the one direction).
As shown in FIG. 2, the heat-shrinkable sheet 2 is not particularly limited as long as it includes the foamed resin sheet 21 and has the heat-shrinkability, and various sheets can be used.
For example, as shown in FIG. 2, the heat-shrinkable sheet 2 may be composed of a laminated sheet of a foamed resin sheet 21 and a synthetic resin sheet 22, or is composed of only the foamed resin sheet 21 although not shown. May be.
When the heat-shrinkable sheet 2 is a laminated sheet, it is sufficient that at least one of the foamed resin sheet 21 and the synthetic resin sheet 22 has the heat-shrinkability.
The foamed resin sheet 21 may be a single layer or a multilayer, and the synthetic resin sheet 22 may be a single layer or a multilayer as well.

The material of the foamed resin sheet 21 is not particularly limited, and one or a mixture of two or more selected from thermoplastic resins such as styrene resins such as polystyrene; olefin resins such as polyethylene and polypropylene; urethane resins; Can be illustrated. Of these, styrene resins are preferred because of their high foamability. The foaming method may be a known foaming method such as physical foaming or chemical foaming. To these resins, additives such as various fillers, colorants, plasticizers, stabilizers and the like can be appropriately added as necessary.
The expansion ratio of the foamed resin sheet 21 is preferably 2 to 20 times, and more preferably 3 to 10 times. If the expansion ratio is too low, the heat insulation inherent to the foamed resin sheet is lowered. On the other hand, if the expansion ratio is too high, distortion occurs when the heat-shrinkable cylindrical label 1 is thermally contracted (poor shape retention is poor). Because there is a risk.
The thickness of the foamed resin sheet 21 is preferably about 0.1 to 1 mm. If the thickness of the foamed resin sheet 21 is too thick, the heat-shrinkable cylindrical label 1 may be heat-shrinked, and a convex shape with a beautiful appearance may not be formed. On the other hand, if the thickness is too thin, This is because sufficient shape retention cannot be ensured.
In addition, when the heat-shrinkable sheet | seat 2 is comprised only with the foamed resin sheet 21, the thickness of this foamed resin sheet 21 has preferable about 0.2 mm-1.2 mm.

The material of the synthetic resin sheet 22 is not particularly limited. For example, ester resins such as polyethylene terephthalate; olefin resins such as polypropylene and cyclic olefin; styrene resins such as polystyrene and styrene-butadiene copolymer; vinyl chloride Examples thereof include one or a mixture of two or more selected from thermoplastic resins such as resins. The synthetic resin sheet 22 is preferably an ester resin film such as polyethylene terephthalate or a styrene resin film, and more preferably a styrene resin film. The synthetic resin sheet 22 preferably has translucency (eg, transparent or translucent) in order to see through design printing.
The thickness of the synthetic resin sheet 22 is usually preferably about 20 μm to 50 μm.

When the heat-shrinkable sheet 2 is a laminated sheet, the foamed resin sheet 21 and the synthetic resin sheet 22 are preferably sheets made of the same kind of resin. This is because if the laminated sheet is made of the same kind of resin, the center seal portion 4 can be formed by heat fusion (heat sealing).
In one embodiment, the heat-shrinkable sheet 2 includes, for example, a heat-shrinkable foamed resin sheet (for example, stretched styrene-based foamed resin sheet) and a heat-shrinkable synthetic resin sheet (for example, unstretched styrene-based). A laminated sheet in which a sheet) is laminated can be used.

  The heat-shrinkable sheet 2 is subjected to design printing as necessary (not shown). In the design printing, for example, a predetermined display such as a product name, a pattern, or an explanation is printed in a single color or multicolor by gravure printing or the like. When the heat-shrinkable sheet 2 is a laminated sheet of the foamed resin sheet 21 and the synthetic resin sheet 22, the design printing is preferably performed on the inner surface of the synthetic resin sheet 22 (laminated surface with the foamed resin sheet). However, the design printing may be performed on the outer surface of the synthetic resin sheet 22. Further, when the heat-shrinkable sheet 2 is composed of only the foamed resin sheet 21, design printing is performed on the outer surface of the foamed resin sheet 21.

  When the heat-shrinkable sheet 2 is the above laminated sheet, the foamed resin sheet 21 and the synthetic resin sheet 22 are usually bonded with an adhesive used in a dry lamination method or a wet lamination method. Examples of the adhesive include solvent-based adhesives such as acrylic, polyurethane, vinyl acetate, vinyl chloride, and rubber, or water-soluble adhesives.

The heat shrinkage rate (immersion for 5 seconds in a glycerin bath corresponding to 160 ° C.) in one direction (main heat shrinkage direction) of the heat shrinkable sheet 2 is, for example, 50% or more, preferably 60% or more, more preferably Is 70% or more. Moreover, the thermal contraction rate (immersion for 5 seconds in a glycerin bath corresponding to 160 ° C.) in the other direction of the heat-shrinkable sheet 2 is, for example, 0.5% to 10%.
However, thermal shrinkage rate (%) = [{(original length in one direction (or other direction)) − (length after immersion in one direction (or other direction))} / (one direction (or other direction) ) Original length)] × 100.

The shrinkage restricting sheet 5 is attached to one surface of the heat-shrinkable sheet 2 (which becomes the inner surface of the tubular body 3 when formed into a tubular shape).
The shape of the shrinkage restriction sheet 5 in plan view is a band shape. The band shape means a shape in which the length in one direction in the plane is longer than the length in the other direction (length in the width direction), for example, the length in one direction is twice or more the length in the other direction, preferably Three times or more are included.
The length in the width direction of the shrinkage restriction sheet 5 is not particularly limited. However, if the length in the width direction of the shrinkage restricting sheet 5 is too long, when the heat-shrinkable cylindrical label 1 is heat-shrinked, a protruding region wider than necessary is generated, or the heat-shrinkable cylindrical label 1 Therefore, the length in the width direction of the shrinkage restriction sheet 5 is preferably 10 mm or less, more preferably 7 mm or less. On the other hand, if the length in the width direction of the shrinkage restricting sheet 5 is too narrow, the handleability is poor and the shrinkage restricting sheet 5 may be broken when the heat shrinkable cylindrical label 1 is thermally shrunk. The length in the width direction of the sheet 5 is usually 1 mm or more.
The strip-shaped shrinkage restricting sheet 5 may have substantially the same width over the entire longitudinal direction, or may have a slightly different width in the longitudinal direction.

  The length (length in the longitudinal direction) of the shrinkage restricting sheet 5 is appropriately set so that the circumferential length of the attached region is ½ or more of the circumferential length of the tubular body 3. For example, the length in the longitudinal direction of the shrinkage restriction sheet 5 takes into account the number of shrinkage restriction sheets 5 attached to the tubular body 3, the length of attaching the shrinkage restriction sheet 5 in the circumferential direction X of the tubular body 3, and the like. Is set as appropriate.

The shrinkage restricting sheet 5 is a non-heat-shrinkable sheet that does not substantially heat shrink at the shrinkage temperature of the tubular body 3 (heat-shrinkable sheet 2).
The shrinkage temperature refers to a temperature at which the cylindrical body 3 can be thermally shrunk to such an extent that the cylindrical body 3 adheres along the outer surface of the container. The shrinkage temperature usually refers to a temperature at which the outer surface temperature of the cylindrical body 3 is 60 ° C to 120 ° C, preferably 80 ° C to 100 ° C.
Further, the fact that the shrinkage restricting sheet 5 does not substantially shrink by heat includes the case where the shrinkage does not shrink at all at the shrinkage temperature, and the heat shrinkage rate is ± 5% or less in any direction (the heat shrinkage rate is determined by the above method). Numerical value to be measured (minus means stretching), including heat shrinkage. This is because if the material does not shrink at all, the choice of materials is limited. On the other hand, even if the shrinkage regulation sheet 5 having a thermal shrinkage rate of about ± 5% or less is used, the shrinkage regulation of the cylindrical body 3 is not hindered. Because.

The shrinkage restricting sheet 5 is a non-heat-shrinkable sheet having a flexibility that bends appropriately. Examples of the shrinkage regulation sheet 5 include synthetic resin sheets, paper, synthetic paper, metal or metal foil sheets in which metal thin films are laminated, and laminated sheets thereof. As the shrinkage restriction sheet 5, a biaxially stretched synthetic resin sheet is preferably used.
The shrinkage restricting sheet 5 is a member that restricts the heat shrinkage of the tubular body 3 to form a protruding region on the heat shrinkable tubular label 1 corresponding to the attached region.

The thickness of the shrinkage restriction sheet 5 is not particularly limited. However, if the shrinkage restriction sheet 5 is too thick, the shrinkage restriction sheet 5 protrudes greatly from the inner surface of the tubular body 3 and may be caught when the heat-shrinkable tubular label 1 is externally fitted to the container. The thickness of 5 is 2 mm or less, preferably 1 mm or less. On the other hand, if the shrinkage restriction sheet 5 is too thin, the handleability is poor and the shrinkage restriction sheet 5 may break when the heat-shrinkable cylindrical label 1 is thermally shrunk. , 100 μm or more, preferably 200 μm or more.
The wall thickness of the shrinkage restricting sheet 5 may be substantially uniform in the longitudinal direction or may be slightly non-uniform.

In one embodiment, a plurality of shrinkage regulation sheets 5 are attached to the heat shrinkable sheet 2.
For example, as shown in FIG. 2, the belt-shaped shrinkage regulation sheet 5 is parallel to one direction of the heat-shrinkable sheet 2 (the circumferential direction X of the tubular body 3 when formed in a tubular shape), and is heat-shrinkable. The sheet 2 is attached in multiple stages in the other direction (the vertical direction Y of the cylindrical body 3 when formed in a cylindrical shape).
The strip-shaped shrinkage restricting sheet 5 may be provided from one side edge 2a to the other side edge 2b of the heat-shrinkable sheet 2 as shown in FIG.
Moreover, the strip-shaped shrinkage restricting sheet 5 may be provided from one side edge 2a of the heat-shrinkable sheet 2 to the vicinity of the other side edge 2b as shown in FIG.
The shrinkage regulation sheet 5 is bonded to the inner surface of the heat shrinkable sheet 2 via an adhesive, an adhesive, a solvent, or the like.

The heat-shrinkable sheet 2 is rolled into a cylindrical shape with the shrinkage restricting sheet 5 on the inside, the other end 2d is overlaid on one end 2c of the heat-shrinkable sheet 2, and the overlapping surface is bonded. Thus, the heat-shrinkable cylindrical label 1 is configured by forming the center seal portion 4.
In the heat-shrinkable cylindrical label 1, a plurality of shrinkage restriction sheets 5 extending in the circumferential direction X of the tubular body 3 are attached to the inner surface of the tubular body 3, and the shrinkage restriction sheet 5 is in the vertical direction of the tubular body 3. They are arranged at a predetermined interval in Y.
The vertical interval between the plurality of shrinkage restriction sheets 5 is not particularly limited. However, if the vertical distance is too narrow, the finger is put between the upper and lower protruding regions of the heat-shrinkable cylindrical label 1 that is substantially the same as the one shrinkage regulation sheet 5 and is formed after the heat shrinkage. Therefore, the vertical distance is preferably 2 cm or more, and more preferably 3 cm or more.

In addition, since the heat-shrinkable sheet 2 shown in FIG. 2A is provided with the shrinkage restricting sheet 5 from one side edge 2a to the other side edge 2b of the heat-shrinkable sheet 2, it is formed in a cylindrical shape. In this case, as shown in FIG. 3A, the end portion of the shrinkage restricting sheet 5 is interposed between the one end portion 2c and the other end portion 2d of the heat shrinkable sheet 2. In this case, in order to heat-bond the one side end portion 2c and the other side end portion 2d (that is, to form the center seal portion 4 by heat-sealing (heat-sealing)), as the shrinkage regulation sheet 5, A sheet made of a material that can be thermally fused to the heat-shrinkable sheet 2 is selected. However, this is not the case when the center seal portion 4 is formed by a tape application method without bonding the one end portion 2c and the other end portion 2d by thermal fusion or the like.
In addition, the heat-shrinkable sheet 2 shown in FIG. 2B is not attached to the other end portion 2d of the heat-shrinkable sheet 2, so that when the sheet is formed in a cylindrical shape, 3 (b), the end of the shrinkage restricting sheet 5 is not interposed between the one end 2c and the other end 2d of the heat-shrinkable sheet 2, and the one end 2c and the other end The part 2d can be directly bonded.

  The circumferential length of the cylindrical body 3 before heat shrinkage is preferably 1.1 to 1.3 times the circumferential length of the body of the container, and further 1.1 to 1.2 times. More preferably, it is formed twice.

Next, the usage example of the said heat-shrinkable cylindrical label 1 is demonstrated.
The heat-shrinkable cylindrical label 1 is used by being heat-shrink mounted on a container.
The container to which the heat-shrinkable cylindrical label 1 of the present invention is attached is not particularly limited, and examples thereof include cup-shaped instant noodle containers, ice confectionery containers, and the like in addition to various beverage containers.
The material of the container is not particularly limited, and examples thereof include glass, ceramics, synthetic resin such as polyethylene terephthalate, and metal. Since the heat-shrinkable cylindrical label 1 of the present invention is excellent not only in a heat insulating effect but also in a buffering effect, it should be attached to a container that is relatively easily damaged (for example, a glass container or a ceramic container). Is more effective.

The heat-shrinkable cylindrical label 1 is usually fitted on the container from above the container.
As shown in FIG. 4, after the heat-shrinkable cylindrical label 1 is fitted to the outside of the body 71 of the container 7, a heat medium is applied around the outer surface of the heat-shrinkable cylindrical label 1 to heat-shrink the cylindrical shape. The label 1 is heated to a shrinkage temperature (the outer surface temperature is about 80 ° C. to 100 ° C.). Examples of the heat medium include steam and warm air. For example, when heating with warm air, warm air of about 150 ° C. to 300 ° C. may be blown for several seconds.

The heated heat-shrinkable cylindrical label 1 is greatly shrunk in the circumferential direction X, whereby a container 10 with a cylindrical label to which the heat-shrinkable cylindrical label 1 is attached can be obtained (see FIG. 5). .
However, the heat-shrinkable cylindrical label 1 has a belt-like shrinkage restriction sheet 5 attached to the inner surface of the tubular body 3, and therefore corresponds to an attachment region of the shrinkage restriction sheet 5 in the tubular body 3. The part hardly shrinks. For this reason, as shown in FIG. 5, the portion of the cylindrical body 3 corresponding to the attachment region of the shrinkage regulation sheet 5 does not adhere to the outer surface of the container 7 but has a convex shape protruding away from the container 7. On the other hand, most of the portion of the cylindrical body 3 corresponding to the non-attached region of the shrinkage restriction sheet 5 is in close contact with the outer surface of the container 7.

Therefore, the heat-shrinkable cylindrical label 1 after heat shrinkage is formed with a protruding region 1 a that protrudes from the outer surface of the container 7 and an adhesion region 1 b that is in close contact with the outer surface of the container 7.
A relatively large space portion 8 exists between the protruding region 1 a of the heat-shrinkable cylindrical label 1 and the container 7. Therefore, the said container 10 with a cylindrical label can interrupt | block the heat | fever of the container 7 favorably by synergy of the heat insulation of the foamed resin sheet 21, and the heat insulation of the space part 8. FIG.
The larger the convex shape of the cylindrical body 3, the larger the space 8 between the protruding region 1a of the heat-shrinkable cylindrical label 1 and the container 7. As described above, the cylindrical body 3 in the region where the shrinkage restricting sheet 5 is attached is hardly thermally contracted. Therefore, the circumferential length of the protruding region 1a is substantially equal to the peripheral length of the cylindrical body 3 before the thermal contraction. Become. According to the present invention, the heat-shrinkable cylindrical label 1 is heat-shrinked by forming the circumferential length of the tubular body 3 before heat shrinkage to be larger than the circumferential length of the body portion of the container 7. Later, a relatively large space 8 can be formed.

Furthermore, the protruding region 1a of the heat-shrinkable cylindrical label 1 can be appropriately deformed by pressing inward from the outside.
For this reason, even if the said container 10 with a cylindrical label contacts a foreign material, when the protrusion area | region 1a of the heat-shrinkable cylindrical label 1 deform | transforms suitably, this protrusion area | region 1a can absorb the press of a foreign material.
As described above, since the heat-shrinkable cylindrical label 1 of the present invention can form a relatively large space portion 8, the protruding region 1a is easily deformed greatly inward and can absorb a larger pressure.
Due to the buffering effect of the heat-shrinkable cylindrical label 1, damage to the container 7 can be prevented.
Therefore, the said container 10 with a cylindrical label can also be packed in a packing box, without interposing a shock absorbing material between the containers 10 with a cylindrical label adjacent. Therefore, the heat-shrinkable cylindrical label 1 of the present invention can save resources and reduce packaging costs.

In the heat-shrinkable cylindrical label 1, the plurality of shrinkage restricting sheets 5 are arranged above and below the cylindrical body 3, so that the protruding region 1 a is located above and below the heat-shrinkable cylindrical label 1. A plurality are formed.
Thus, the heat-shrinkable cylindrical label 1 in which the plurality of protruding regions 1a are formed is particularly excellent in the buffering effect and the heat insulating effect.

Furthermore, the heat-shrinkable cylindrical label 1 after the heat shrinkage is formed with the protruding regions 1a spaced apart in the vertical direction and the contact region 1b recessed inwardly between the upper and lower protruding regions 1a. For this reason, a finger | toe can be applied to the outer surface of the contact | adherence area | region 1b between the upper and lower protrusion area | regions 1a, and the said container 10 with a cylindrical label can be held.
When the container 10 with the cylindrical label is held as described above, the finger is hooked on the protruding region 1a, so that the container 10 with the cylindrical label can be prevented from slipping carelessly from the handle.

Next, various modifications of the present invention will be described.
However, in the description of the following modifications, configurations and effects different from those of the above embodiment will be mainly described, and descriptions of the same configurations and effects as those of the above embodiment may be omitted and terms may be used.

In the above-described embodiment, a plurality of (for example, three) shrinkage restriction sheets 5 are attached, but only one shrinkage restriction sheet 5 may be attached to the inner surface of the cylindrical body 3.
In addition, the shrinkage restriction sheet 5 is attached over the entire circumference of the cylindrical body 3, but is not limited thereto. For example, as shown in FIG. It may be attached to a part in the circumferential direction X of the cylindrical body 3. However, when the attachment region of the strip-shaped shrinkage regulation sheet 5 is very shorter than the circumferential length of the cylindrical body 3, sufficient heat insulation effect and buffer effect are not achieved. Therefore, when the shrinkage restriction sheet 5 is not attached over the entire circumference of the cylindrical body 3, the length of the attachment region of the shrinkage restriction sheet 5 (the circumferential direction X length of the attachment region) is the same as that of the tubular body 3. It is set to 1/2 or more of the circumference, and preferably 3/4 or more of the circumference of the cylindrical body 3.

  Further, the shrinkage restriction sheet 5 is not attached over the entire circumference of the cylindrical body 3, and the length of the attached region of the shrinkage restriction sheet 5 is set to be ½ or more of the circumferential length of the tubular body 3. In this case, a plurality of the shrinkage restriction sheets 5 may be attached to the cylindrical body 3 (see FIG. 6B). In this case, the plurality of strip-shaped shrinkage restriction sheets 5 are arranged so as to extend in the circumferential direction X of the cylindrical body 3. The plurality of shrinkage restriction sheets 5 may be disposed at the same position, or may be disposed separately above and below the cylindrical body 3.

Furthermore, in the said embodiment, although the strip | belt-shaped shrinkage | contraction restriction | limiting sheet | seat 5 is arrange | positioned in parallel with the circumferential direction (one direction of the heat-shrinkable sheet 2) of the cylindrical body 3, it is not necessarily restricted to parallel, For example, strip | belt shape The shrinkage restriction sheet 5 may be inclined with respect to the circumferential direction X of the cylindrical body 3.
Preferably, the strip-shaped shrinkage restricting sheet 5 is spirally disposed on the inner surface of the cylindrical body 3.
For example, the heat-shrinkable sheet 2 (see FIG. 7) attached with the belt-shaped shrinkage regulation sheet 5 inclined at an acute angle with respect to one direction of the heat-shrinkable sheet 2 is contracted by forming it in a cylindrical shape. The heat-shrinkable cylindrical label 1 in which the regulation sheet 5 is spirally arranged on the inner surface of the cylindrical body 3 can be obtained.

When the heat-shrinkable cylindrical label 1 is externally fitted to the container 7 and heated, as shown in FIGS. 8 and 9, the protruding region 1a of the heat-shrinkable cylindrical label 1 is formed in a spiral shape.
When the cylindrically labeled container 10 having the spiral protruding region 1a is rotated in the circumferential direction, the vertical height position of the protruding region 1a changes.
For this reason, as shown in FIG. 9, by aligning the protruding region 1a of one cylindrically labeled container 10 so as to enter the close contact region 1b of the other cylindrically labeled container 10, adjacent cylinders The container 10 with a label can be stacked and placed.
When the plurality of containers 10 with cylindrical labels are stacked in this manner and packed in a packing box, the packing space can be made relatively small, and the vertical displacement of the adjacent containers 10 with cylindrical labels can be prevented. preferable.

The perspective view which shows one Embodiment of a heat-shrinkable cylindrical label. (A) is a perspective view which shows one Embodiment of a heat-shrinkable sheet, (b) is a perspective view which shows other embodiment of a heat-shrinkable sheet. (A) is a top view which shows one Embodiment of a heat-shrinkable cylindrical label, (b) is a top view which shows other embodiment of a heat-shrinkable cylindrical label. The front view including the cross section which shows one Embodiment of a container with a cylindrical label (only the heat-shrinkable cylindrical label is shown by the longitudinal cross-section). The front view including the cross section which shows one Embodiment of a container with a cylindrical label (only the heat-shrinkable cylindrical label is shown by the longitudinal cross-section). (A), (b) is a top view which shows other embodiment of a heat-shrinkable cylindrical label. The perspective view which shows other embodiment of a heat-shrink sheet | seat. The front view including the cross section which shows other embodiment of a container with a cylindrical label (only the heat-shrinkable cylindrical label is shown with the longitudinal cross-section). The front view which shows the state which made the container with a cylindrical label of FIG. 8 stack.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Heat-shrinkable cylindrical label, 1a ... Projection area | region, 1b ... Adhesion area | region, 2 ... Heat-shrinkable sheet, 21 ... Foamed resin sheet, 22 ... Synthetic resin sheet, 3 ... Cylindrical body, 4 ... Center seal part, 5 ... Shrinkage restricting sheet, 7 ... Container, 71 ... Body of container, 8 ... Space, 10 ... Container with cylindrical label

Claims (3)

A heat-shrinkable cylindrical label having a tubular body in which the heat-shrinkable sheet is formed into a tubular shape so that the main heat-shrinkable direction of the heat-shrinkable sheet is the circumferential direction,
The heat-shrinkable sheet includes a foamed resin sheet,
A belt-like shrinkage regulation sheet for regulating the heat shrinkage of the heat shrinkable sheet extends in the circumferential direction of the tubular body and is attached to the inner surface of the tubular body,
The shrinkage regulation sheet is composed of a non-heat shrinkable sheet having a thickness of 100 μm or more and 2 mm or less having flexibility,
Circumferential length of the attached area of the contraction restricting sheet, have a circumferential length less than 1/2 of the length of the tubular body, and heat-shrinkable, characterized in that substantially equal before and after heat shrinkage Cylindrical label. The shrinkage regulation sheet is composed of a plurality of sheets,
2. The heat-shrinkable cylindrical label according to claim 1, wherein at least two shrinkage regulation sheets are arranged vertically at a predetermined interval in the vertical direction of the cylindrical body. A container with a cylindrical label, in which a cylindrical body in which the heat-shrinkable sheet is formed in a cylindrical shape so that the main heat-shrinkable direction of the heat-shrinkable sheet including the foamed resin sheet is the circumferential direction is mounted on the container. Because
In the circumferential direction of the inner surface of the cylindrical body, a belt-like shrinkage regulation sheet for regulating the heat shrinkage of the heat shrinkable sheet is attached,
The shrinkage regulation sheet is composed of a non-heat shrinkable sheet having a thickness of 100 μm or more and 2 mm or less having flexibility,
The tubular body is formed with a projecting region projecting outward corresponding to the attachment region of the shrinkage regulation sheet, and the circumferential length of the projecting region is the circumference of the tubular body before heat shrinking. Approximately equal to the length,
A container with a cylindrical label, characterized in that a space is formed between the protruding region of the cylindrical body and the container.

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