JP7220003B2 - Packaging material, packaging method and package - Google Patents

Description

TECHNICAL FIELD The present invention relates to a packaging material suitable for packaging a container containing lunch boxes, side dishes, noodles and other foods, a packaging method using the packaging material, and a packaged package.

Lunch boxes, side dishes, noodles and other foods sold at convenience stores, supermarkets, etc. are generally packaged in plastic containers with transparent lids on the containers.

As such packaging, there is a case where the connecting portion between the lid and the container is packaged with a heat-shrinkable film (see, for example, Patent Document 1).

JP 2015-3767 A

Foods such as those described above are manufactured in a food factory in a center separate from stores such as convenience stores and supermarkets, and delivered to each store.

Normally, when the joint between the lid and the container is wrapped with a heat-shrinkable film, it is easy to print information on the contents of the container because the area of the packaging material at the joint is small. However, even if printing is possible on the packaging material, the packaging material will be thermally shrunk in the subsequent thermal shrinkage process, which makes it difficult to check the printed information. For this reason, a separate label is prepared that displays information about the food, such as the name of the food contained in the container, the amount of content, the date of manufacture, and the expiration date, and this label is attached to the surface of each packaged container. there is

Printing the food information on a separate label and attaching the label to the container or lid increases the number of man-hours and requires the label.

The present invention has been made in view of such circumstances, and provides a packaging material, a packaging method, and a packaging body in which printed information can be easily confirmed without requiring a label on which information or the like is printed. intended to

In order to achieve the above object, the present invention is configured as follows.

(1) A packaging material according to the present invention is a packaging material for packaging a connecting portion between the container body and the lid in a container in which the opening of the container body is closed by the lid,
A heat-shrinkable film that is strip-shaped in a state before heat shrinkage and a strip -shaped thermosensitive recording material that is wider than the strip-shaped heat-shrinkable film are provided. Both ends of a thermal recording medium are joined together, and the heat-shrinkable film is thermally shrunk to wrap a circumferential part of the joint, and the thermal recording medium is wraps the remainder of the connecting portion in the circumferential direction as the heat-shrinkable film is heat-shrunk .

According to the packaging material of the present invention, the heat-shrinkable film and the heat-sensitive recording medium are joined together, and the heat-shrinkable film is heated to heat-shrink the heat-shrinkable film. An accompanying thermosensitive recording medium can be used to tightly seal the connecting portion between the container body and the lid, and to package the connecting portion.

Further, since the thermal recording medium does not thermally shrink, the information printed on the thermal recording medium can be suppressed from being distorted, and the information printed on the thermal recording medium can be easily confirmed.

As a result, the information printed on the packaging material can be made easier to recognize than the conventional example in which the whole circumference of the connecting portion between the container body and the lid is wrapped with a heat-shrinkable film. is not required to be printed and attached to the container.

According to the present invention, a part of each of both ends in the longitudinal direction of the heat-sensitive recording medium is joined to both ends of the heat-shrinkable film in the longitudinal direction, and the heat-shrinkable film and the heat-sensitive recording medium separate the container body and the lid. can be wrapped around its entire circumference.

According to the present invention , it is possible to print, for example, information on contents contained in a container and various other information in a wide area of a thermosensitive recording medium in an easy-to-read manner.

( 2 ) In one embodiment of the present invention , the heat-sensitive recording medium has a wider region than the heat-shrinkable film and hangs down so as to cover the outer peripheral surface of the container body .

According to this embodiment , various types of information such as food information can be printed on the region hanging down so as to cover the outer peripheral surface of the container body of the thermosensitive recording medium, so that the printed various information can be easily visually recognized. .

( 3 ) In another embodiment of the present invention , the heat-sensitive recording body has a region wider than the heat-shrinkable film rising upward from the lid.

According to this embodiment, the wide area of the thermosensitive recording medium rises upward from the lid, and by printing advertisements or the like on this wide area, it attracts consumers' attention, Sales promotion can be planned.

( 4 ) In another embodiment of the present invention, the thermal recording material is a thermal film.

According to this embodiment, various information can be thermally printed on the thermal film.

( 5 ) In still another embodiment of the present invention, the thermal film is transparent.

According to this embodiment, the design or the like printed on the container body can be visually recognized through the transparent heat-sensitive film.

( 6 ) A packaging method according to the present invention is a method for packaging a connecting portion between the container body and the lid in a container in which the opening of the container body is closed with a lid,
A strip- shaped heat-shrinkable film and a strip-shaped heat-sensitive recording material wider than the heat-shrinkable film are prepared in advance, and the heat-shrinkable film surrounds a part of the connecting portion in the circumferential direction, and the heat-sensitive Both ends of the heat-shrinkable film in the longitudinal direction and portions of both ends of the heat-sensitive recording member in the longitudinal direction are joined to each other by the recording medium so as to surround the remainder of the connecting portion in the circumferential direction , and the heat-sensitive recording medium is heated. It heat-shrinks a heat-shrinkable film.

According to the packaging method of the present invention, both longitudinal ends of the heat-shrinkable film and the heat-sensitive recording medium are arranged so that the heat-shrinkable film and the heat-sensitive recording medium surround the entire circumference of the connecting portion between the container body and the lid. The heat-shrinkable film and the heat-sensitive recording material accompanying the heat-shrinkage of the heat-shrinkable film are formed by joining parts of both ends in the longitudinal direction of the body and heating the heat-shrinkable film to heat-shrink the heat-shrinkable film. , said connecting portion can be tightly closed and wrapped around the entire circumference of the connecting portion.

Further, since the thermal recording medium does not thermally shrink, the information printed on the thermal recording medium can be suppressed from being distorted, and the information printed on the thermal recording medium can be easily confirmed.

According to the present invention , it is possible to print, for example, information on contents contained in a container and various other information in a wide area of a thermosensitive recording medium in an easy-to-read manner.

( 7 ) In one embodiment of the present invention, a step of bonding one end in the longitudinal direction of the heat-shrinkable film to a part of one end in the longitudinal direction of the heat-sensitive recording medium, and the one end of the heat-shrinkable film. and a part of the one end of the thermosensitive recording body are joined together by the heat-shrinkable film and the thermosensitive recording body, surrounding the entire periphery of the joint portion, and the heat-shrinkable film of the thermosensitive recording body a step of covering the outer peripheral surface of the container body with a wide area; and a step of joining the other end of the heat-shrinkable film surrounding the entire circumference of the joint portion to a portion of the other end of the thermosensitive recording medium. and the other end of the heat-shrinkable film and a part of the other end of the heat-sensitive recording material are joined, and the entire periphery of the joint is surrounded by the heat-shrinkable film and the heat-sensitive recording material. heating the container in a heat shrink tunnel to heat shrink the heat shrinkable film.

According to this embodiment, one end of the heat-shrinkable film and a part of one end of the heat-sensitive recording medium are joined together, the other end of the heat-shrinkable film and a part of the other end of the heat-sensitive recording medium are joined, and heat is applied. The shrinkable film and the heat-sensitive recording material surround the entire circumference of the connecting portion between the container body and the lid body, and the wide area of the heat-sensitive recording material covers the outer peripheral surface of the container body, forming a heat-shrinkable film. and the other ends of the thermosensitive recording material are joined together, heated in a heat shrink tunnel, and the heat shrinkable film is heat-shrunk, so that the heat-shrinkable film and the thermosensitive recording material seal the entire circumference of the joined portion for packaging. can do.

( 8 ) In another embodiment of the present invention, the step of printing on the wide area of the thermosensitive recording medium prior to the step of enclosing the entire periphery of the connecting portion and covering the outer peripheral surface of the container body. contains.

According to this embodiment, after printing various types of food information on a wide area of the thermosensitive recording medium, the thermosensitive recording medium and the heat-shrinkable film surround the entire periphery of the joint portion of the container, and the food The process proceeds to the step of covering the outer peripheral surface of the container body with a wide area printed with information or the like.

( 9 ) A packaging body according to the present invention is a packaging body in which a connecting portion between the container body and the lid body in a container in which the opening of the container body is closed with a lid body is wrapped with a packaging material,
A heat-shrinkable film that is strip-shaped in a state before heat shrinkage , and a strip-shaped thermosensitive recording material that is wider than the strip-shaped heat-shrinkable film , wherein both ends of the heat-shrinkable film in the longitudinal direction and the heat-sensitive recording medium are provided. Each part of both longitudinal ends of the recording medium is joined, and a part of the joined part in the circumferential direction is wrapped by the heat-shrinkable heat- shrinkable film, and the heat-shrinkable film is wrapped. Along with the heat shrinkage, the thermal recording medium wraps the remainder of the connecting portion in the circumferential direction.

According to the present invention, both ends of the heat-shrinkable film in the longitudinal direction are joined to portions of both ends of the heat-sensitive recording medium in the longitudinal direction, respectively, and the heat-shrinkable film is heated to shrink the heat-shrinkable film. The film and the heat-sensitive recording material caused by the heat shrinkage of the heat-shrinkable film can be sealed by tightening the connecting portion between the container body and the lid, and the entire circumference of the connecting portion can be wrapped.

Further, since the thermal recording medium does not thermally shrink, the information printed on the thermal recording medium can be suppressed from being distorted, and the information printed on the thermal recording medium can be easily confirmed.

As a result, the information printed on the packaging material can be made easier to recognize than the conventional example in which the whole circumference of the connecting portion between the container body and the lid is wrapped with a heat-shrinkable film. is not required to be printed and attached to the container.

According to the present invention , it is possible to print, for example, information on contents contained in a container and various other information in a wide area of a thermosensitive recording medium in an easy-to-read manner.

( 10 ) In another aspect of the present invention, the heat-sensitive recording medium has a wider region than the heat-shrinkable film and hangs down so as to cover the outer peripheral surface of the container body.

According to this embodiment, various types of information such as food information can be printed on the region suspended so as to cover the outer peripheral surface of the container body of the thermosensitive recording medium, so that the printed various types of information can be easily visually recognized.

( 11 ) In still another embodiment of the present invention, the heat-sensitive recording body has a region wider than the heat-shrinkable film rising upward from the lid.

According to this embodiment, the wide area of the thermosensitive recording medium rises upward from the lid, and by printing advertisements or the like on this wide area, it attracts consumers' attention, Sales promotion can be planned.

As described above, according to the present invention, the heat-shrinkable film and the heat-sensitive recording material are joined together, and the heat-shrinkable film is heated to be heat-shrunk, thereby sealing the joining portion between the container body and the lid. can be packaged.

Further, since the thermal recording medium does not thermally shrink, the information printed on the thermal recording medium can be suppressed from being distorted, and the information printed on the thermal recording medium can be easily confirmed.

As a result, the information printed on the packaging material can be made easier to recognize than the conventional example in which the whole circumference of the connecting portion between the container body and the lid is wrapped with a heat-shrinkable film. is not required to be printed and attached to the container.

FIG. 1 is a perspective view of a package according to one embodiment of the present invention. FIG. 2 is a schematic side view of the package before the heat-shrinkable film of FIG. 1 is heat-shrunk. 3 is a schematic cross-sectional view of the thermal film of FIG. 1. FIG. FIG. 4 is a schematic plan view for explaining the procedure for wrapping the connecting portion of the container with a heat-shrinkable film and a heat-sensitive film. FIG. 5 is a schematic plan view for explaining the procedure for wrapping the connecting portion of the container with the heat-shrinkable film and the heat-sensitive film. FIG. 6 is a schematic plan view for explaining the procedure for wrapping the connecting portion of the container with the heat-shrinkable film and the heat-sensitive film. FIG. 7 is a schematic plan view for explaining the procedure for wrapping the connecting portion of the container with the heat-shrinkable film and the heat-sensitive film. FIG. 8 is a schematic plan view for explaining the procedure of wrapping the connecting portion of the container with the heat-shrinkable film and the heat-sensitive film. FIG. 9 is a perspective view of a package according to another embodiment of the invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic perspective view of a package according to one embodiment of the invention.

A package 1 of this embodiment includes a container 2 and a packaging material 3 for packaging the container 2 . The container 2 is, for example, a food product such as a boxed lunch or a side dish, which is sold at a supermarket, a convenience store, or the like. The container 2 of this embodiment comprises a container body 4 which is circular in plan view, and a lid 5 which is detachably fitted to the container body 4 to close the opening of the container body 4 . The container body 4 and lid 5 are made of resin material.

The packaging material 3 is a strip-shaped heat-shrinkable film 6 and a strip-shaped non-heat-shrinkable film having a width equal to or greater than the width of the heat-shrinkable film 6, which is wider than the heat-shrinkable film 6 in this embodiment. The heat-sensitive film 7 is joined at one end and the other end in the longitudinal direction, the heat-shrinkable film 6 is heat-shrunk, and the joint portion between the container body 4 and the lid 5 is stretched over the entire circumference. It is packaged.

In this embodiment, the heat-shrinkable film 6 wraps a half-peripheral region that is part of the entire circumference of the connecting portion between the container body 4 and the lid 5, and the heat-sensitive film 7 as the heat-sensitive recording medium It wraps around half the circumference, which is the remainder of the full circumference of the connecting part.

FIG. 2 is a schematic side view showing a state in which the packaging material 3 is wrapped around the container 2 before the heat-shrinkable film 6 is heat-shrunk.

The packaging material 3 is formed by bonding a belt-shaped heat-shrinkable film 6 and an upper portion of a heat-sensitive film 7 wider than the heat-shrinkable film 6 to form a container body 4 and a lid 5 on the upper portion of the container 2. is formed in a cylindrical shape so as to surround the entire circumference of the connecting portion 8 of the . This connecting portion 8 is a boundary portion between the container body 4 and the lid 5 on the outer periphery of the container 2 .

The heat-sensitive film 7 has its upper portion joined to the heat-shrinkable film 6 to surround the joint portion 8 , while the region wider than the heat-shrinkable film 6 surrounds the outer peripheral surface of the container body 4 over half the circumference. It hangs down from the top so as to cover it.

In the state shown in FIG. 2, the heat-shrinkable film 6 is heated and thermally shrunk so that the heat-shrinkable film 6 hermetically wraps the joint portion 8 of the container 2 and the heat of the heat-shrinkable film 6 is reduced. As the heat-sensitive film 7 shrinks, the heat-sensitive film 7 is also pulled inwardly of the container 2 to hermetically wrap the connecting portion 8 of the container 2, resulting in the package 1 shown in FIG. In this package 1 , the upper ends of the heat-shrinkable film 6 and the heat-sensitive film 7 extend to the upper surface of the lid 5 .

On the wide area of the heat-sensitive film 7, information on the food contained in the container 2, such as product name, ingredients, expiry date, date of manufacture, bar code, etc., is printed. This food information is printed at a food factory in a center separate from stores such as supermarkets and convenience stores, and delivered to each store.

As described above, the packaging material 3 has a function as a band seal that seals and packages the connecting portion 8 between the container body 4 and the lid 5 over the entire circumference, and also functions as a display portion for displaying food information and the like. has the function of

The heat-shrinkable film 6 is made of stretched film such as polystyrene (PS), polyethylene (PE), polyvinyl chloride (PV), polypropylene (PP), polyethylene terephthalate (PET), etc. In this embodiment, for example, Consists of transparent, uniaxially oriented polystyrene.

The heat-sensitive film 7 has a heat-sensitive recording layer formed on a film-like base material, as will be described later. is.

This thermal film 7 is a film excellent in transparency, and the configuration of this thermal film 7 excellent in transparency will be described below.

As shown in FIG. 3, the thermal film 7 of this embodiment has a structure in which a thermal recording layer 10 that develops color when heated, an intermediate layer 11, and a top coat layer 12 are laminated on a film-like substrate 9. It's becoming

As the substrate 9, a transparent synthetic resin film such as a polypropylene film, a polyethylene terephthalate film, a polystyrene film, a polycarbonate film, or the like can be used. Although the thickness of such a film is not particularly limited, for example, a thickness of about 10 μm to 100 μm is preferable because it is excellent in coatability and transparency.

The material forming the thermosensitive recording layer 10 includes a coloring agent that develops color upon heating, a developer, a filler, a binder, a lubricant, and the like.

In order to improve the transparency of the thermosensitive recording layer 10, it is preferable to use materials with fine particle diameters. By using a material having such a small particle diameter, it is possible to suppress irregular reflection of light by the particles.

Specifically, leuco dyes, which are color formers, include, for example, 2-aniline-3methyl-6-(N-methyl-P-toluidino)fluorane, etc., and their particle diameters are 0.5. It is preferably 1 to 1.0 μm. Here, the particle size refers to the 50% average particle size measured by a microtrack laser analysis/scattering particle size analyzer.

Hereinafter, "particle size" refers to the 50% average particle size measured by this Microtrack laser analysis/scattering particle size analyzer.

Examples of the developer include 3,3'-diallyl-4,4'-dihydroxydiphenylsulfone, and the particle size thereof is preferably 0.1 to 1.0 µm. .

Examples of the filler include kaolin and calcium carbonate, and the particle size thereof is preferably 1.0 μm or less.

Examples of the binder include styrene-butadiene copolymer.

Examples of the lubricant include polyethylene, zinc stearate, paraffin, etc., and the particle size thereof is preferably 0.5 μm or less.

In order to improve the transparency, it is particularly effective to contain paraffin, and this paraffin has a low melting point of less than the color development temperature of the thermosensitive recording layer 10, preferably less than 80°C, more preferably less than 50°C. Paraffins are preferred.

The particle size of the low melting point paraffin is preferably 0.5 μm or less as described above. The content of this paraffin is preferably, for example, 0.1 to 1.0 g/m ² in terms of dry weight.

By containing paraffin having a low melting point in this way, when the coating liquid for forming the thermosensitive recording layer is applied onto the base material 9 and dried, the paraffin is melted and the particles constituting the thermosensitive recording layer 10 are formed. It enters into gaps such as irregularities on the surface and fills the gaps, thereby suppressing irregular reflection of light on the particle surface and improving transparency.

The intermediate layer 11 having barrier properties against water and oil is mainly made of resin.

Examples of resins for the intermediate layer 11 include acrylic resin emulsions, water-soluble resins such as polyvinyl alcohol (PVA) resins, and SBR resins.

In order to improve the transparency, the resin has a water-soluble portion, for example, a polyvinyl alcohol (PVA) resin having a hydroxyl group as a hydrophilic structural unit, or a hydrophobic core particle, A resin having a core-shell structure coated with a water-soluble shell polymer, such as a core-shell type acrylic resin, is preferred.

Water-soluble polyvinyl alcohol (PVA) and core-shell type acrylic resin have good film-forming properties. Since the resin having a flexible portion permeates into the thermosensitive recording layer 10 to form a smooth intermediate layer 11, diffused reflection of light in the thermosensitive recording layer 10 is suppressed and transparency is improved.

Core-shell type resins are conventionally known. For example, core-shell type acrylic resins commercially available under the name of Barrier Star (manufactured by Mitsui Chemicals, Inc.) can be mentioned.

The top coat layer 12 improves the matching property of the thermal film 7 with the thermal head and allows the thermal recording layer 10 to develop color smoothly. Those to which fillers, lubricants, cross-linking agents, etc. are added are used.

Examples of resins that are binders include acrylic resins.

Lubricants include, for example, polyethylene and zinc stearate.

Examples of cross-linking agents include zirconium carbonate.

Fillers include colloidal silica, calcium carbonate, polymethylmethacrylate (PMMA), polystyrene (PS), and the like.

The particle size of these fillers is preferably 1.0 μm or less.

In order to improve transparency, colloidal silica having a small particle size is preferable as a filler.

The thickness of the heat-sensitive recording layer 10, the intermediate layer 11, and the topcoat layer 12 formed of the above materials, that is, the thickness of the heat-sensitive film 7 excluding the substrate 9 is not particularly limited, but is 1.0 μm. With the above thickness, the opacity of the thermal film 7 is 10% or less. This opacity is based on JISP8149, which is a standard for measuring opacity of paper.

Next, each embodiment concerning the packaging method by this packaging material 3 is described.

(First embodiment)
In the first embodiment relating to the packaging method using the packaging material 3, the heat-shrinkable film 6 and the heat-sensitive film 7 cut to a predetermined length are joined at one end and the other end in the longitudinal direction by heat or an adhesive. An annular wrapping material 3 is formed in advance. As shown in FIG. 2, the annular packaging material 3 is fitted so as to surround the entire circumference of the connecting portion 8 between the container body 4 and the lid 5 in the upper part of the container 2, and then passes through a shrink tunnel. The heat-shrinkable film 6 is heated and thermally shrunk. As the heat-shrinkable film 6 heat-shrinks, the heat-shrinkable film 6 and the heat-sensitive film 7 tightly seal and package the joint portion 8 of the container 2, resulting in the package 1 shown in FIG. get

(Second embodiment)
Next, a second embodiment of the packaging method will be described with reference to schematic plan views shown in FIGS. 4 to 8. FIG.

In the packaging method of the second embodiment, the packaging material 3 is attached to the container 2 by passing the container 2 through a machine so that the heat-shrinkable film 6 and the heat-sensitive film 7 are wrapped around the container 2 and welded and cut. It is to be worn.

First, as shown in FIG. 4, a heat-shrinkable film roll 13 around which a long heat-shrinkable film 6 is wound and a heat-sensitive film roll around which a long heat-sensitive film 7 is wound. 14 are prepared in advance.

The above food information is printed on the thermal film 7 fed out from the thermal film roll 14 by the thermal printer 15 . One longitudinal end of the heat-sensitive film 7 on which food information is printed and one longitudinal end of the heat-shrinkable film 6 unwound from the heat-shrinkable film roll 13 are joined by heat welding.

The container 2 is transported by the transport conveyor 16 in the direction indicated by the arrow A, and as the container 2 passes between the guide rollers 17, 17, it passes from both film rolls 13, 14 as shown in FIG. Both films 6 and 7 are unwound and wrapped around the connecting portion 8 of the container 2 .

As shown in FIG. 6, after the container 2 has passed between guide rollers 17, 17 and a pair of welding/cutting devices 18, 18 downstream thereof, the conveyor 16 is temporarily stopped. be.

In this state, the container 2 is pressed and fixed by a pressing member (not shown), and the pair of welding/cutting devices 18, 18 are brought close to each other to sandwich both films 6, 7 as shown in FIG. The other ends in the longitudinal direction are welded and cut, and each of the films 6 and 7 is wrapped around the container 2 by half the circumference over the entire circumference so as to surround the joint portion 8 of the container 2, as shown in FIG. state.

After that, as shown in FIG. 8, the pair of welding/cutting devices 18 and 18 are separated from each other, and the conveying conveyor 16 is driven again to convey the container 2 in the direction of arrow A, forming a heat shrink tunnel. The heat-shrinkable film 6 is heated and heat-shrinked by passing through the shrink tunnel 19 . As the heat-shrinkable film 6 heat-shrinks, the heat-shrinkable film 6 and the heat-sensitive film 7 tightly seal and package the joint portion 8 of the container 2, resulting in the package 1 shown in FIG. get

As described above, the package 1 of the present embodiment can seal the connecting portion 8 between the container body 4 and the lid 5 for packaging. Instead, the food information is printed on a wide area hanging down to cover the outer peripheral surface of the container body 4, so that the printed food information can be suppressed from being distorted by heating. The printed information can be easily confirmed.

As a result, the information printed on the packaging material can be easily recognized compared to the conventional example in which the entire circumference of the connecting portion between the container body and the lid is wrapped with a heat-shrinkable film, while the food information can be separately printed. It is not necessary to print on a label and attach the label to the surface of the packaged container.

The wide area of the thermal film 7 on which the food information is printed hangs down so as to cover the outer peripheral surface of the container body 4, which prevents the food inside the container body 4 from being visually recognized through the transparent lid 5. never become.

Furthermore, in this embodiment, a bar code 20 is printed on the wide area of the thermal film 7, and the area corresponding to the bar code 20 on the outer peripheral surface of the container body 4 is, for example, plain white. Therefore, the information of the barcode 20 can be read by a barcode reader. In this way, the bar code 20 can be printed on the thermal film 7, and there is no need to print the bar code on the container body as in the conventional case.

(Other embodiments)
The printing on the heat-sensitive film 7 is not limited to food information.
The shape of the container 2 is not limited to circular in plan view, and may be any shape such as rectangular, polygonal, or elliptical.

The longitudinal lengths of the heat-shrinkable film 6 and the heat-sensitive film 7 do not need to be the same as described above, and the heat-shrinkable film 6 may be longer than the heat-sensitive film 7, or the heat-sensitive film 7 may be longer than the heat-sensitive film 7. Film 7 may be longer than heat-shrinkable 6 .

The shape of the packaging material 3 is not limited to the above embodiment. For example, as shown in FIG. may be raised toward the lid body 5 side.

In the example of FIG. 9, the product name, ingredients, expiry date, etc. are printed on the wide area of the thermal film 7 in the same manner as in FIG. Since it is conspicuous and easily catches the eyes of consumers, it is possible to promote sales by printing advertisements or the like regarding the product in this wide area.

In the above embodiments, the thermal recording medium is applied to a thermal film whose substrate is a film. A sheet or the like is also applicable.

REFERENCE SIGNS LIST 1 package 2 container 3 packaging material 4 container body 5 lid 6 heat-shrinkable film 7 heat-sensitive film 8 connecting part 15 printing device 16 transport conveyor 18 welding/cutting device 19 shrink tunnel

Claims (11)

A packaging material for packaging a connecting portion between the container body and the lid body in a container in which the opening of the container body is closed with the lid body,
A heat-shrinkable film that is belt-shaped before heat-shrinking ;
A strip-shaped thermosensitive recording material having a width wider than the strip-shaped heat-shrinkable film,
Both ends of the heat-sensitive recording material in the longitudinal direction are partially joined to both ends of the heat-shrinkable film in the longitudinal direction,
The heat-shrinkable film heat-shrinks and wraps a part of the joint portion in the circumferential direction,
The thermosensitive recording material wraps the remainder of the connecting portion in the circumferential direction as the heat-shrinkable film is thermally shrunk.
A packaging material characterized by: A region wider than the heat-shrinkable film hangs down so as to cover the outer peripheral surface of the container body.
The packaging material according to claim 1. A region of the heat-sensitive recording material, which is wider than the heat-shrinkable film, rises upward from the lid.
The packaging material according to claim 1 . The thermal recording material is a thermal film,
The packaging material according to any one of claims 1 to 3 . wherein the thermal film is transparent;
The packaging material according to claim 4 . A method for packaging a connecting portion between the container body and the lid in a container in which the opening of the container body is closed by the lid, comprising:
Preparing in advance a strip-shaped heat-shrinkable film and a strip-shaped heat-sensitive recording material wider than the heat-shrinkable film,
The heat-shrinkable film surrounds a portion of the connecting portion in the circumferential direction, and the heat-sensitive recording medium surrounds the remaining portion of the connecting portion in the circumferential direction. The heat-sensitive recording material is joined to both ends in the longitudinal direction, and heated to heat-shrink the heat-shrinkable film.
A packaging method characterized by: a step of bonding one longitudinal end of the heat-shrinkable film and a part of one longitudinal end of the thermosensitive recording medium;
The heat-shrinkable film and the heat-sensitive recording body in which the one end of the heat-shrinkable film and a part of the one end of the heat-sensitive recording body are joined surround the entire periphery of the joint portion, and the heat-sensitive recording body A step of covering the outer peripheral surface of the container body with a region wider than the heat-shrinkable film of
a step of joining the other end of the heat-shrinkable film surrounding the entire periphery of the joint portion and a part of the other end of the thermosensitive recording medium;
The container in which the other end of the heat-shrinkable film and a part of the other end of the heat-sensitive recording material are joined together, and the entire periphery of the joined portion is surrounded by the heat-shrinkable film and the heat-sensitive recording material. Heating in a heat shrink tunnel to heat shrink the heat shrinkable film.
The packaging method according to claim 6 . A step of printing on the wide area of the thermosensitive recording medium prior to the step of surrounding the entire periphery of the joint portion and covering the outer peripheral surface of the container body,
The packaging method according to claim 7. A packaging body in which a connecting portion between the container body and the lid body in a container in which the opening of the container body is closed with a lid body is wrapped with a packaging material,
A heat-shrinkable film that is strip-shaped in a state before heat shrinkage, and a strip-shaped thermosensitive recording material that is wider than the strip-shaped heat-shrinkable film,
Both ends of the heat-shrinkable film in the longitudinal direction are joined to portions of both ends of the heat-sensitive recording medium in the longitudinal direction,
A portion of the connecting portion in the circumferential direction is wrapped by the heat-shrinkable heat-shrinkable film, and along with the heat shrinkage of the heat-shrinkable film, the heat-sensitive recording medium wraps the connecting portion in the circumferential direction. the remainder is packaged,
A package characterized by: A region wider than the heat-shrinkable film hangs down so as to cover the outer peripheral surface of the container body.
The package according to claim 9. A region of the heat-sensitive recording material, which is wider than the heat-shrinkable film, rises upward from the lid.
The package according to claim 9 .

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