JP4076435B2 - Packaging materials - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging member used for packaging of a tray container, a container with a fitting lid, a cylindrical container, fruits and vegetables, etc. containing confectionery, bread, rice balls, sandwiches, lunch boxes, side dishes, and the like.
[0002]
[Prior art]
For merchandise such as food sold at supermarkets and convenience stores, various merchandise information such as the price of the merchandise, contents, contents, expiration date, and barcode are generally displayed. The product information is usually displayed by attaching a label on which the product information is thermally transferred or heat-sensitively printed, or using an adhesive tape or packaging film on which product information is printed and displayed in advance. It is done by wrapping.
By the way, interest in food safety is increasing, and in addition to the information on the price, content, expiration date, etc. of the product that has been displayed on the product, the place of production, producer, use of the product It is required to display more information on the product, such as additives that are used. In addition, in order to promote the sale of merchandise, it has become necessary to add so-called POP advertisements to the merchandise to increase consumers' willingness to purchase.
[0003]
In addition, in order to promote the sale of products that are especially close to the expiration date, the seller may go to the store and attach labels with discounts / discounts to those products. . In such a case, the label attached to the product is deliberately peeled off and affixed to another product, or the contents of the label are tampered with and attached to the product again. There is. Therefore, in order to prevent such mischief, the adhesive applied to the label is made of a material having a high adhesive strength, making it difficult to peel off the label attached to the product.
Further, as shown in FIGS. 5 and 6, the package that is opened using the tear tape has a problem that it is difficult to open the package because the stuck label becomes an obstacle.
[0004]
[Patent Document 1]
JP 2000-309369 A
[Problems to be solved by the invention]
As described in [Prior Art], information related to a product is displayed by attaching a label displaying the information to the product. However, if the content to be displayed increases, With the label, it becomes difficult to display all of them.
Therefore, in order to display more product information, it is necessary to affix multiple labels or increase the size of the label. As a result, the appearance of the product may deteriorate, or the contents may be visually recognized. The problem that it becomes difficult arises.
[0006]
In addition, as described in [Prior Art], the label is peeled off from the product and affixed to another product, the display content of the label is tampered with, and it is affixed to the product again. In order to prevent mischief, high pressure-sensitive adhesives are used in conventional labels.
However, that alone cannot sufficiently prevent such mischief, and more effective prevention measures are required.
[0007]
In addition, when separating and collecting used products from packaging containers, packaging films, etc., it is necessary to peel off the affixed labels, but conventional labels use high adhesive strength adhesives as described above. Therefore, it is not easy to remove the attached label. Also, since the peeled label is still highly sticky, care must be taken not to stick to other places. Therefore, a complicated operation is required for separating and collecting the packaging film and the label.
[0008]
The problem to be solved by the present invention is that a large amount of product information, designs, etc. can be displayed, the attached label can be easily peeled off, and the once peeled label cannot be attached again. Therefore, while preventing the above-mentioned mischief completely, it is possible to eliminate the troublesome work of separating and collecting the packaging film and the label, and further, it can be in any form and has excellent design. It is to provide a packaging member.
[0009]
[Means for Solving the Problems]
The packaging member of the present invention is a packaging member in which a thermosensitive coloring portion is provided on one surface of a substrate, and is a packaging member in the form of a film, a sheet, a tube, or a bag.
Another packaging member of the present invention is a packaging in which a heat-sensitive color developing portion and a peelable portion that can be peeled from the surface of the base material and the heat-sensitive color developing portion are provided on one surface of the base material. It is a member for packaging | wrapping, Comprising: It is a member for packaging which is a form of either a film, a sheet | seat, a tube, or a bag.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
As described above, the packaging member of the present invention is a packaging member in which a thermosensitive coloring portion is provided on one surface of a substrate, or a thermosensitive coloring portion on one surface of the substrate, and the base material. A packaging member in which a peelable portion that can be peeled from the surface and the thermosensitive coloring portion is provided so as not to overlap each other, and has any form of a film, a sheet, a tube, or a bag. In any of the packaging members, the contents of the constituent members having the same names are the same.
[0011]
The base material constituting the packaging member of the present invention forms a mold for the packaging member and plays a role as a carrier such as a thermosensitive coloring portion. The material of the base material is selected from a film / sheet made of thermoplastic resin (low foam, perforated), non-woven fabric, and paper (synthetic paper, Japanese paper). It is determined as appropriate in consideration of a certain item to be packaged, the size of the label to be attached, and the like.
Further, when the substrate is transparent or semi-transparent, it is preferable because the contents can be easily viewed. However, the substrate may be opaque or colored in order to impart a desired texture or design to the substrate.
The substrate can be obtained by forming a film by a conventionally known inflation method, an extrusion method such as a T-die method, a casting method, or the like.
In general, the thickness of the substrate is preferably in the range of 10 to 300 μm from the viewpoints of strength, printability, packaging workability, and the like.
[0012]
When the base material is a film or sheet made of a thermoplastic resin, the thermoplastic resin includes polypropylene resin, polyethylene resin, polystyrene resin, polyester resin, polyamide resin, polyvinyl chloride resin, biodegradation Resin etc. can be used. Examples of the biodegradable resin include a polylactic acid resin, a polyester resin composed of adipic acid / succinic acid / phthalic acid, and a polycaprolactone resin. From the viewpoint of transparency, strength, and printability, It is preferable to use a polylactic acid resin as a main component. These thermoplastic resins can be used not only independently but also by selecting a plurality of resins. Further, the base material is not limited to a single layer, but may be a laminate in which a plurality of different resin layers are laminated and integrated.
The film / sheet made of a thermoplastic resin is preferably subjected to a surface treatment such as a corona discharge treatment in order to improve adhesion, water resistance and the like.
[0013]
When the base material is a film made of a thermoplastic resin, in particular, a stretched film made of a polypropylene resin, a polystyrene resin, or a polyester resin, and having a thickness of 10 to 150 μm, strength, printability, This is preferable from the viewpoint of packaging workability, transparency, and the like.
[0014]
When the base material is a sheet made of a thermoplastic resin, in particular, a sheet made of a polypropylene resin, a polyethylene resin, a polystyrene resin, and having a thickness of 150 to 300 μm is from the viewpoint of flexibility and the like. Is preferred.
[0015]
When the base material is a non-woven fabric, the material is not particularly limited, but the non-woven fabric made of polypropylene fiber, polyethylene fiber, polyester fiber, or polypropylene fiber coated with polyethylene fiber is flexible. From the standpoints of printability, printability, heat sealability, and the like.
[0016]
By making the base material heat-bondable using a heat-fusible resin, it is possible to more reliably bind and enclose the objects to be packaged. When materials that are difficult to heat-seal, such as synthetic paper or Japanese paper, are selected as the material constituting the base material, a layer made of a heat-fusible resin is laminated on those materials, co-extrusion, By forming by coating or the like, heat fusion can be achieved.
Examples of the heat-fusible resin include polyethylene resin, polypropylene resin, chlorinated polypropylene resin, ethylene / vinyl acetate copolymer resin, ethylene / acrylic resin, urethane resin, polyvinyl chloride resin, acrylic resin. An ionomer resin can be used.
The heat fusion temperature of the substrate can be appropriately set and adjusted in consideration of packaging workability such as packaging speed, stripping workability, and the like.
[0017]
The thermosensitive coloring portion constituting the packaging member of the present invention displays a large amount of product information by freely displaying desired characters in any color such as black, red, green, and blue. At the same time, it has the role of displaying an arbitrary design and improving the design of the packaging member. For example, as shown in FIG. 3, information related to sales such as “Bargain”, “Advertisement Goods”, “O △ Beef”, product name, seasonal information, area information around the store, locality and type of fresh food, use Print any thermal color display 32 consisting of characters and designs representing the method, price, date and time of manufacture, consumption (best-before date), raw materials, barcodes, etc. on the thermal color development unit 31 to make a so-called POP advertisement, etc. The design of the packaging member can be improved by providing a lot of information, or by developing characters, designs, etc. and their background portions in different colors.
[0018]
In consideration of the appearance of the package after packaging, the visibility of the printed contents, the ease of confirmation of the contents, etc., the thermosensitive coloring part should be of an appropriate size at the desired location on the surface of one side of the substrate. Form. If the thermosensitive coloring portion is provided so as to cover the surface of the packaged item, it becomes difficult for the purchaser to visually recognize the contents, and the appearance of the package is deteriorated. Characters, designs and the like to be displayed can be printed by a thermal printer, a label printer or the like equipped with a thermal print head.
[0019]
As a constituent material of the thermosensitive coloring portion, a known thermosensitive ink may be used, and the thermosensitive coloring portion is formed by applying it to the surface of the substrate and drying it. Examples of the thermal ink include a thermal color former (such as a leuco dye for thermal color development), a developer (phenol, organic carboxylic acid, anilide derivative, etc.), a binder (starch, cellulose derivative, polyvinyl alcohol, etc.). ), Sensitizers composed of thermoplastic resins, additives (physical property modifiers, fungicides, etc.), stabilizers, and solvents composed of organic solvents or water are exemplified. By heating the thermal ink, the thermal color former using the melted sensitizer as a solvent and the developer react to develop a predetermined color.
[0020]
As shown in FIG. 4, the thermosensitive coloring section has the role of a conventional label sheet by printing a print display 42 regarding the processing date, price, seller, etc. on the surface of the thermosensitive coloring section 41. Is also possible. At this time, it is important that the heat-sensitive color former is affected by the printing ink to be used and no discoloration or color development occurs. For this purpose, the printing ink used is preferably a solvent that does not contain alcohols or aromatic hydrocarbons as a solvent, or an aliphatic hydrocarbon solvent.
Further, as the vehicle of the printing ink, a styrene / isoprene block copolymer resin (SIS), a styrene / butadiene copolymer resin (SIS), which can be dissolved in these solvents and satisfy properties such as adhesion and strength as a printing ink ( SBS) and hydrogenated resins thereof, styrene / ethylene / propylene copolymer resin (SEPS), styrene / isoprene / ethylene / propylene copolymer resin (SIEPS), epoxy-modified styrene / butadiene copolymer resin, impact-resistant styrene / butadiene Examples include copolymer resins.
[0021]
The peelable part constituting the packaging member of the present invention is formed on the base material or the heat-sensitive color developing part, and is attached to the peelable part when a label displaying product information or the like is attached. When the label affixed to the peelable part is peeled off, the resin constituting the peelable part is easily peeled off and transferred to the adhesive-coated surface of the label. As a result, the label loses dew condensation and adhesiveness and cannot be reapplied. This makes it possible to completely prevent the mischief caused by peeling off the label, such as attaching the peeled label to another product, tampering with the label, and reattaching the label. It is possible to avoid inconvenience associated with the sorting work such as adhering to a place. Furthermore, in the packaging member of the present invention, since the label attached to the product is present only in the peelable part, the separation from the container after use becomes very easy.
[0022]
In order for the peelable part to exhibit the above-described function, it is necessary that the peel strength between the peelable part and the base material or the thermosensitive coloring part be smaller than the peel strength between the peelable part and the label. Specifically, the 180 ° peel strength between the peelable part and the base material or the thermosensitive coloring part is preferably in the range of 1 to 15 g / cm.
When peeling off the label, the peelable part is peeled off from the base material or the heat-sensitive color developing part, moved to the adhesive application part of the label, and needs to be composed of a transferred resin. Cellulosic resins, acrylic resins, urethane resins and the like can be mentioned. The peelable part can be formed by applying an aqueous or solvent-based ink of these resins to the base material or the thermosensitive coloring part. In addition, the peelable part is preferably a transparent / semi-transparent layer from the viewpoint of the visibility of the contents.
The thickness of the peelable portion is preferably 0.5 to 10.0 μm, more preferably 1.0 to 5.0 μm. If the peelable part is thinner than 0.5 μm, the peelable part may not be completely transferred to the adhesive of the label. On the other hand, if it is thicker than 10.0 μm, when the label is peeled off, the film strength of the peelable part is too high, and it becomes impossible to peel off, or the unnecessary part other than the outline part of the label is peeled off. Sometimes. Moreover, when the peelable part is transparent, there is an effect that the trace of the peeled label is hardly noticeable and the appearance of the package is not impaired.
[0023]
The above-described thermal coloring portion, peelable portion, design on the thermal coloring portion, and the like can be formed on the surface of the substrate using a method such as gravure printing, offset printing, screen printing, or comma coating. From the viewpoint of preventing discoloration and protecting the thermosensitive coloring portion, the formation order is preferably (1) thermosensitive coloring portion, (2) design, etc., and (3) peelable portion.
In addition, the packaging member of the present invention has a top coat with a protective layer made of an acrylic resin, a melamine resin, a polyester resin, a cellulose resin, etc. in order to prevent color development due to heat of a printer or the like other than during printing. A layer may be provided on the thermosensitive coloring portion.
[0024]
The packaging member of the present invention takes any form of a film, a sheet, a tube or a bag. The tube or bag-shaped packaging member may be produced by a known method. For example, the film-shaped packaging member is folded in half, and the remaining three sides are heat-sealed, or a tube-shaped product produced from an extrusion device. The film may be cut to a predetermined dimension by fusing the bottom.
FIG. 1 shows an example of the packaging member in the form of a film / sheet. The packaging member illustrated in FIG. 1 has two heat-sensitive color developing portions 11 and 11 ′ having a rectangular shape in plan view on one surface of a base material 10, and a peelable portion 13 between the heat-sensitive color developing portions 11 and 11 ′. Are provided so as not to overlap each other. 1A is a plan view showing an example of the packaging member of the present invention, and FIG. 1B is a cross-sectional view taken along the line AA ′ of FIG. FIG. 2 shows an example of a bag-shaped packaging member. The packaging member illustrated in FIG. 2 (a) is a bag-shaped packaging member, which is back-laminated by a superposition seal and sealed on both sides and sealed in three directions. FIG. 2 (b) shows a bread wrapping provided with a peelable part 24 in order to attach the label by displaying the characters “XX △△ bread” and “XX circle” on the thermosensitive coloring parts 22, 22 ′. It is a bag-like packaging member for use.
[0025]
When packaging using the packaging member of the present invention, it may be packaged as desired according to the selected form, and the entire package may be encapsulated or wrapped around the package. Thus, the packaging method is arbitrary, such as packaging.
[0026]
As the objects to be packaged using the packaging member of the present invention, tray containers filled with confectionery, bread, rice balls, sandwiches, lunch boxes, side dishes, tomatoes, strawberries, grapes, containers with fitting lids, Examples include egg containers (egg packs), prestar packs, bags, boxes, and various boxes. Among these, the packaging member of the present invention is particularly useful for packaging a tray container, a container with a fitting lid, and an egg container (egg pack).
In addition, the packaging member of the present invention is used for directly packaging fruits and vegetables by collecting and binding strawberries, spinach, burdock, etc., or sticking it on the surface of lettuce, cabbage, watermelon, etc. You can also
[0027]
【The invention's effect】
According to the packaging member of the present invention, it is possible to display a large amount of product information, designs, etc. on a product without using a label or the like, and it is possible to easily peel off the attached label. In addition, once peeled off the label cannot be reapplied, it is possible to completely prevent mischief such as reapplying a tampered label, and it has been necessary in the past for separating and collecting the packaging film and the label. Troublesome work can be eliminated. Moreover, it can be in any form and is excellent in design.
[Brief description of the drawings]
FIG. 1 (a) is a plan view showing an example of a packaging member (film / sheet form) according to the present invention, and FIG. 1 (b) is an AA view of FIG. 1 (a). FIG.
FIG. 2 (a) is an explanatory view showing an example of a packaging member (bag shape) according to the present invention, and FIG. 2 (b) is an illustration of a packaging member for bag-like bread packaging. It is explanatory drawing which showed one example.
FIG. 3 is a diagram showing an example of a heat-sensitive color display shown in a heat-sensitive color developing section.
FIG. 4 is a diagram illustrating an example of a pattern printed on a thermosensitive coloring portion.
FIG. 5 is a diagram showing an example of a package of rice balls.
FIG. 6 is a diagram showing an example of a sandwich package.
[Explanation of symbols]
10, 20 ... Base material
11, 11 ', 21, 21', 22, 22 ', 31, 41 ... thermal coloring part
12, 24… Peelable part
23… Seal part
32… Thermal color display
42 ... Print display
50 ... Boiled rice balls
60 ... Sandwich packaging
51, 61 ... label
52, 62 ... tear tape

Claims (1)

A thickness of 0.5 to 10.0 μm formed on one surface of the substrate with a thermosensitive coloring portion and a cellulose resin, an acrylic resin or a urethane resin that can be peeled from the surface of the substrate and the thermosensitive coloring portion . A wrapping member provided with a peelable part , wherein the wrapping member is in the form of a film, sheet, tube or bag.

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