KR101167299B1 - Display strip - Google Patents

Abstract

The present invention relates to a display strip for bonding and displaying bags containing goods. This may facilitate the automation of the process of bonding the bag to the display strip. This allows the bags enclosed with the goods to be easily removed without damaging the appearance of the bags.

The display strip of the present invention is used to bond a plurality of bags enclosed with goods vertically for display. It consists of at least a base layer and a sealant layer containing an ethylene-vinylacetate copolymer and a tackifier.

Display, Strip, Ethylene-Vinyl Acetate Copolymer

Description

Display strips {DISPLAY STRIP}

1 is a schematic diagram showing a strip bag display;

Fig. 2 is a schematic diagram showing a state when removing the bag bonded to the display strip of the present invention.

Fig. 3 is a schematic diagram showing the state when removing the bag bonded to the conventional display strip;

Fig. 4 is a schematic diagram showing the change in the load applied when removing the bag bonded to the display strip of the present invention.

Fig. 5 is a schematic diagram showing a change in load applied when removing a bag bonded to a conventional display strip.

6 is a schematic diagram showing an example of a procedure of attaching a bag enclosed with a product to the display strip of the present invention;

Fig. 7 is a schematic diagram showing an example of the form of a sealing jaw.

Fig. 8 is a diagram showing a change in the load applied when removing the bag bonded to the display strip fabricated according to the first embodiment.

[Description of Symbols Used in Drawings]

1: display strip,                 

2: bag enclosed goods,

3: sealant layer,

4: substrate layer,

5: sealant layer (white side),

6: print layer (white side),

7: Sealing area.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to display strips for side by side display of a plurality of bags enclosed with goods.

Goods such as snacks and snacks are usually sold in the form of pillow packaging (long pillow, lateral pillow) packaged in bags. These bags are often sold side by side on the shelves of stores. However, this method has been restricted by the place that the bags must be displayed by hand on the display stand by hand and cannot be displayed and sold other than a predetermined display stand.

BACKGROUND OF THE INVENTION A display method of selling and selling a product that does not require a display stand, known as a strip bag display, is known. The strip back display is a display form in which a plurality of products are attached to and suspended from a tape material having a predetermined width called a display strip as shown in FIG. 1. This type of display eliminates the need for display stands and can be sold at any location, such as at the checkout counter in a shop or at the front of a hotel.

Conventionally, a display strip has been used, for example, in which a hole is formed in advance in a predetermined position of a tape made of paper or resin, and an adhesive tape is attached to the back surface, and a bag sealed with a product through the hole is attached to the adhesive tape. In addition, for example, a ring made of resin was previously provided at a predetermined position of a paper or a tape made of resin, and a punch hole was punched in the bag side in which the product was enclosed, and the product was hanged at that position.

However, such a display strip has a problem that it is difficult to automate the process of attaching a bag enclosing a product to the display strip by a machine. Thus, strip back displays have not been widely used.

In contrast, by providing a heat seal layer on one side, a display strip capable of directly heat-sealing and bonding a bag in which a product is sealed has been proposed. Using this display strip, it is very easy to continuously automate the process of attaching the bag enclosed with the product to the display strip in a series of processes for encapsulating the product in the bag.

When attaching a bag enclosed with a product to this display strip, it is necessary to combine it with sufficient sealing strength so that it does not fall naturally due to the product's own weight when displayed in a store or the bag falls during transportation. However, if the sealing strength is increased, the surface surface of the bag is destroyed when the bag containing the product attached to the display strip is broken, resulting in damage to the printed surface and worsening the appearance of the product. It peeled, and there existed a problem that a flaw and a hole generate | occur | produce in the bag for maintaining the quality of a commodity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a display strip which is easy to automate the process of attaching a bag enclosed with a product and that can be easily removed without damaging the appearance of the bag when removing the bag enclosed with the product.

The present invention is a display strip for attaching and displaying a plurality of bags in which a product is enclosed side by side, at least comprising a base layer and a sealant layer, wherein the sealant layer contains an ethylene-vinylacetate copolymer and a tackifier. Display strip.

The display strip of the present invention, the sealant layer and the surface of the bag enclosed with the product can be bonded by heat sealing, and at the same time when the surface of the sealant layer and the bag bonded by heat sealing and the sealant layer of the bag It is preferable that peeling occurs at an interface with the surface, and when peeling the sealant layer and the surface of the bag, the peeling is started by an initial load lower than the tensile breaking strength of the surface layer of the bag, and the peeling is completed. It is preferable that the load corresponding to the initial load must be continuously or intermittently applied until it is obtained.

It is preferable that vinyl acetate content of the said ethylene-vinylacetate copolymer is 8 to 42weight%. The adhesive promoting tackifier is at least one resin selected from the group consisting of rosin resin, terpene resin, aliphatic hydrocarbon resin, alicyclic hydrocarbon resin and aromatic hydrocarbon resin. desirable.

It is preferable that the said sealant layer contains 70 to 95 weight% of an ethylene-vinylacetate copolymer, and 5 to 30 weight% of a tackifier. Moreover, it is preferable that the said sealant layer is formed in the substantially whole surface.

It is preferable that the said base material layer consists of biaxially stretched polypropylene, biaxially stretched polyethylene terephthalate, metal foil, paper, or these laminated bodies.

It is preferable that the display strip of this invention further has a polyethylene layer between the said base material layer and a sealant layer. At this time, the display strip of the present invention is made by laminating polyethylene while extrusion molding between the film containing the ethylene-vinylacetate copolymer and the tackifier and the biaxially stretched polyethylene terephthalate film, or the ethylene-vinylacetate air It is preferable to laminate | stack a biaxially stretched polyethylene terephthalate film on the polyethylene layer side of the laminated | multilayer film which consists of a layer containing a coalescing and a tackifier, and a polyethylene layer.

It is preferable that the said bag consists of at least a sealant layer and a base material layer, and it is preferable that a sealant layer consists of a heat-sealing biaxially stretched polypropylene film. It is preferable that the said sealant layer and the base material layer were laminated via an adhesive agent. It is preferable that the said sealant layer and the base material layer were laminated through the intermediate | middle layer, and it is more preferable that the said sealant layer and the intermediate | middle layer were laminated via the adhesive agent.                     

The merchandise exhibition body in which the display strip of the present invention and the bag enclosed with the merchandise are combined by heat sealing is also one of the present invention.

Hereinafter, the present invention will be described in detail.

The display strip of the present invention consists of at least a base layer and a sealant layer.

The sealant layer contains an ethylene-vinylacetate copolymer and a tackifier. Since the ethylene-vinylacetate copolymer is a resin having excellent heat sealing property, the ethylene-vinylacetate copolymer can be bonded by heat sealing between the sealant layer and the surface of a bag enclosed with a product. In addition, since heat sealing can be performed at a relatively low temperature of about 70 to 150 ° C., the heat sealing process can be made faster, and heat sealing can be sufficiently performed even if the thickness of the base layer is increased. By increasing the thickness of the base layer, the elasticity of the entire display strip can be strengthened, and the strength of the periphery of the hole can be increased even when the hanging hole is punched by a hole punch or the like.

In addition, since the ethylene-vinylacetate copolymer is a flexible elastomer, the sealant layer is not broken and the bag side is not damaged when the bag bonded by heat sealing is peeled off.

In the conventional display strip, when the bag encapsulating the product attached to the display strip by heat sealing is damaged to the printed layer of the bag by the impact when the surface of the bag is agglomerated and broken as shown in Fig. 3, The printed surface may be damaged or even beyond the sealing portion. In the display strip of the present invention, since the sealant layer on the display strip side contains an ethylene-vinylacetate copolymer, the sealant layer is more likely to be broken than the surface of the bag, and when peeled as shown in FIG. Since the sealant layer on the side is broken while being elongated and peeling occurs at the interface between the sealant layer and the surface of the bag, the bag enclosed with the product can be removed without damaging the appearance.

In the display strip of the present invention, when the sealant layer bonded by heat sealing and the surface of the bag are peeled off, the peeling is started by an initial load lower than the tensile strength at break of the surface layer of the bag, and also corresponds to the initial load until the peeling is completed. It is desirable to continuously apply the load continuously or intermittently.

The present inventors analyzed the case where the bag side was damaged at the time of peeling when the bag was bonded to the conventional display strip by heat sealing. In many cases where the back side is damaged in this way, the load applied when the bag is peeled off with the display strip joined by heat sealing is measured, and this is determined as a result of the distance between chucks (distance between chucks). Was plotted to obtain a graph of the shape shown in FIG. 5A. As shown in FIG. 5B, first, when a certain load is reached at the initial peeling distance (interval: A '), the outer surface side of the bag in a bag formed of a laminated film of two to five layers, wherein the surface layer is formed of a laminated film of two to five layers. Means one layer, and when the bag outer surface side is formed of heat-silic biaxially stretched polypropylene, it means not only the heat-silicone layer on the outermost surface but also the heat-silic biaxially stretched polypropylene layer.) Since a crack occurs in the surface and breakdown proceeds to the inside of the surface layer, the load decreases rapidly, and it is considered that the peeling progresses until completion of peeling (interval distance B ') at a very weak load.

On the other hand, in a preferred embodiment of the display strip of the present invention, the load applied when peeling off the display strip and the bag joined by heat sealing is measured, and the result is plotted against the distance between the display strip and the bag (interval distance), for example, FIG. A graph of the shape shown in FIG. 4A or FIG. 4A 'can be obtained. The schematic diagram which showed the peeling shape at this time is shown to FIG. 4B or FIG. 4B '.

That is, since the sealant layer contains an ethylene-vinylacetate copolymer, first, the sealant layer is stretched by an initial load lower than the tensile strength at break of the surface layer of the bag so that peeling starts (interval distance: A). Since the surface layer of a bag side is not destroyed by this, the bag which enclosed the goods can be removed, without damaging an external appearance. Then, after peeling starts, it is preferable to continuously or intermittently apply a load corresponding to the initial load until peeling is completed (interverse distance B).

In order to be able to easily detach the product from the display strip, it is necessary to start peeling with a relatively weak force.However, like the conventional display strip, the peeling load is rapidly lowered once the peeling is started, and thus the product is transported or displayed. Even if the load is momentarily unintentionally, the product will simply fall off. In the preferred embodiment of the display strip of the present invention, since the load corresponding to the initial load must be continuously or intermittently applied until peeling is started after peeling is started, it is possible to prevent the product from falling unintentionally. have.

This is caused, for example, by the inclusion of ethylene-vinylacetate copolymer in the sealant layer of the display strip of the present invention, at the interface between the bag surface and the sealant layer before the surface of the bag is broken, or by cohesive failure of the sealant layer. At the same time, when the sealant layer is formed of a plurality of layers, the bonding strength between layers is increased so that interlayer failure does not occur, or even if an interlayer failure occurs, the interlayer failure does not proceed unless a relatively large load is applied. Can be.

In addition, continuously applying a load corresponding to the initial load here means that the load required to complete peeling after giving the initial load is about the same as the initial load, but if it does not drop suddenly, It is okay to have a change. Preferably, it is preferable to continuously apply a load within a range of ± 50% to the initial load. Moreover, it is more preferable that the load required until peeling completion after giving initial load becomes large every time the distance between chucks increases (FIG. 4A).

In addition, intermittent continuous application of the load corresponding to the initial load means that even after the initial load is applied, even if the load decreases significantly, the necessary load is increased again until peeling is completed, and the load within the range of ± 50% with respect to the initial load. This means that a peak showing this jamming appears (Fig. 4A).

Although the vinyl acetate content in the said ethylene-vinylacetate copolymer is not specifically limited, It is preferable that it is 8 to 42 weight%. If it is less than 8 weight%, adhesiveness may become inadequate, and if it exceeds 42 weight%, film formability may be inferior.

In addition, as the ethylene-vinylacetate copolymer, a part of the vinyl acetate component may be saponified. Furthermore, as the ethylene-vinylacetate copolymer, at least part of which is carboxy-modified may be used.

As said ethylene-vinyl acetate copolymer, a single thing may be used and you may use it in mixture of 2 or more types from which vinyl acetate content etc. differ.

Although it does not specifically limit as said tackifier, For example, at least 1 sort (s) of resin chosen from the group which consists of rosin resin, terpene resin, aliphatic hydrocarbon resin, alicyclic hydrocarbon resin, and aromatic hydrocarbon resin can be used suitably.

The rosin resin is not particularly limited, and for example, rosin, rosin derivative, rosin ester, gum rosin, wood rosin, tall oil rosin, distilled rosin, hydrogenated rosin, dimerized rosin, polymerized rosin, glycerol ester of natural rosin, modified rosin Glycerol ester, pentaerythritol ester of natural rosin, pentaerythritol ester of modified rosin, glycerol ester of light wood rosin, glycerol ester of hydrogenated rosin, glycerol ester of polymerized rosin, pentaerythritol ester of hydrogenated rosin and phenolic modified pentaerythritol of rosin Ester etc. are mentioned.

The terpene resin is not particularly limited, and examples thereof include terpenes, phenolic terpenes, modified terpenes, α-pinene polymers, β-pinene polymers, dipentene polymers and terpene phenol copolymers.                     

It does not specifically limit as said aliphatic hydrocarbon resin, For example, the polymer which has a C4-C5 mono or diolefin, such as 1-butene, isobutylene, butadiene, and 1, 3- pentadiene as a main component, etc. are mentioned. .

With the alicyclic hydrocarbon resin is not particularly limited, for example, C _4's pent that dimerization polymerizing a cyclic monomer such as that resin, a cyclopentadiene polymerization that one by the diene component in the oil -C ₅ in the ring forming step Resins, hydrogenated dicyclopentadiene resins, hydrogenated petroleum resins, and the like.

It does not specifically limit as said aromatic hydrocarbon resin, For example, vinyl toluene, indene, a styrene polymer, (alpha) -methylstyrene copolymer, etc. are mentioned.

As said tackifier, commercially available things, such as those of USP 6117945, can be used, for example.

It is preferable that the said sealant layer contains 70 to 95 weight% of the said ethylene-vinylacetate copolymer, and 5 to 30 weight% of the said tackifier. When content of the said tackifier is less than 5 weight%, the adhesiveness at the time of melting a sealant layer may become inadequate, and when it exceeds 30 weight%, moldability may become inadequate.

The sealant layer may contain a wax for the purpose of improving the processing suitability and adjusting the adhesive strength. The wax is not particularly limited, and examples thereof include olefin waxes, paraffin waxes, aliphatic ester waxes, deoxidation carnauba waxes, saturated aliphatic acid waxes, unsaturated aliphatic acid waxes, saturated alcohol waxes, and aliphatic waxes. Alcohol waxes, polyhydric alcohol waxes, saturated fatty acid amide waxes, saturated fatty acid bisamide waxes, unsaturated acid amide waxes and aromatic bisamide waxes.

The sealant layer may further contain commonly used additives such as a sunscreen, an antioxidant, a plasticizer, a lubricant, a pigment, and a dye as necessary.

The sealant layer may be formed on substantially the entire surface of the display strip of the present invention, may be formed like a stripe shape, or may be formed at a predetermined position to attach a product. In the case of being formed on the substantially entire surface of the display strip, the product can be attached to any position of the display strip, which is preferable. In addition, "substantially" here means not including the position which carried out the perforation process, the periphery which a product cannot attach, etc. to it.

The base material layer is not particularly limited, but it is preferable to have sufficient strength in the application of attaching a plurality of products and to have heat resistance that does not melt or deteriorate when heat sealing, for example, biaxially stretched polypropylene (OPP). , Biaxially stretched polyethylene terephthalate, metal foil or a laminate thereof is preferable.

Although it does not specifically limit as thickness of the said base material layer, It is preferable that it is 30-200 micrometers. If the thickness is less than 30 μm, sufficient strength cannot be obtained, and if the bag is sealed, the product may be damaged during exhibition or when the bag containing the product is removed. There is a case. As described above, since the ethylene-vinylacetate copolymer contained in the sealant layer is excellent in low temperature heat sealability, if the thickness of the base layer is thickened within a range that does not impair heat sealability, the elasticity of the entire display strip can be strengthened. Further, even when a hanging hole is drilled by a hole punch or the like, the strength around the hole can be increased.

It is preferable that the display strip of this invention further has a polyethylene layer between the said base material layer and the said sealant layer. Since polyethylene is flexible and tensile elongation is high, the strength of the whole display strip of this invention improves by having the said polyethylene layer, and when a display punching process (hole punch) is given to a display strip, a product is removed. When it comes out, it can withstand the load on the part. In addition, the polyethylene layer also serves to bond the substrate layer and the sealant layer to each other. Lamination of polyethylene can be performed by laminating polyethylene while extrusion molding between a base material layer and a sealant layer. In addition to the polyethylene, an ionomer of an ethylene- (meth) acrylic acid copolymer or an ethylene- (meth) acrylic acid copolymer may be used.

In addition, the said base material layer and a sealant layer may be laminated | stacked via an adhesive by a well-known dry lamination method, and may be laminated | stacked by the thermal lamination method which does not use a solvent or an adhesive agent.

Although it does not specifically limit as thickness of the said polyethylene layer, It is preferable that it is 5-50 micrometers. If it is less than 5 micrometers, sufficient strength improvement effect may not be acquired, and if it exceeds 50 micrometers, the thickness of the whole display strip may become thick, and heat seal may be impaired by a heat insulation effect.

The display strip of this invention may further have a layer which ensures another function between the said base material layer and the said sealant layer. As such a layer, a printed layer etc. are mentioned, for example. In particular, in the case where a polymer can be used as the base material layer, the printing layer is preferably provided between the base material layer and the sealant layer, and when the paper can be used as the base material layer, the printing layer is printed on the side where the paper is not laminated. It is preferable to

The form of the display strip of this invention is not specifically limited, For example, a tape form, a sheet form, etc. are mentioned. In addition, one end of the display strip of the present invention may be subjected to a perforation process to be hooked to a hook, or a clip or the like for hanging and displaying a display strip to which goods are attached. In particular, the drilling process is preferable because it can be easily performed in a series of automated processes. However, in the case where the display strip is pierced and hooked to the hook, it is easy to tear the hole, so that the base layer is reinforced or a polyethylene layer or a nylon layer is provided between the base layer and the sealant layer. It is preferable to use the thing.

As the bag which encloses the goods to stick to the display strip of this invention, any bag normally used can be used, Especially, it is preferable that it consists of at least a sealant layer and a base material layer. The sealant layer on the surface of the bag is preferably made of at least one selected from the group consisting of polypropylene, copolymers of propylene and other olefins, low density polyethylene and ethylene-vinyl acetate copolymers. Moreover, it is preferable that the sealant layer of the surface of the said bag became a heat-sealing biaxially stretched polypropylene (OPH) film. As a heat seal biaxially oriented polypropylene (OPH) film, an extremely thin terpolymer usually made of a resin having heat sealability such as propylene-ethylene-butene terpolymer on the surface of the biaxially oriented polypropylene (OPP). By providing a layer), heat seal is imparted, and in particular in Europe and America, it is widely used as a material for bags. Moreover, it is preferable that the sealant layer of the said bag surface does not contain the cohesive failure component mentioned above.

It is preferable to laminate the sealant layer and the base material layer which comprise the bag which encloses the said goods through an adhesive agent. Since the high interlayer adhesion can be obtained by laminating through an adhesive, there is no breakage between the layers of the bag when the bag is removed from the display strip of the present invention, and there is no breakage between the display strip and the bag or inside the display strip. Easier

In addition, the sealant layer and base material layer which comprise the bag which encloses the said goods may be laminated through the intermediate | middle layer. In this case, it is preferable to laminate the sealant layer and the intermediate layer via an adhesive agent. Since the sealant layer and the intermediate layer are laminated through the adhesive, high interlayer adhesion can be obtained, so there is no breakage between the layers of the bag when detaching the bag from the display strip of the present invention, and the interface between the display strip and the bag or inside the display strip It is easy to destroy at.

A bag encapsulating such a product can be produced by coextrusion of a heat-seal polymer with a polymer forming a base layer, or by coating a heat-seal polymer such as a hot melt adhesive on the base layer.

As a bag for encapsulating a product to be attached to the display strip of the present invention, for example, a biaxially stretched polypropylene (OPP) layer / printing layer / adhesive layer / polyethylene (PE) layer / aluminum-deposited polyethylene terephthalate (PET) layer / polyethylene (PE ) Layer / non-stretched polypropylene (CPP) layer; Biaxially oriented polypropylene (OPP) layer / printed layer / polyethylene (PE) layer / aluminum-deposited polyethylene terephthalate (PET) layer / polyethylene (PE) layer / unstretched polypropylene (CPP) layer; Biaxially oriented polypropylene (OPP) layer / printing layer / aluminum vapor deposition non-oriented polypropylene (CPP) layer; Biaxially oriented polypropylene (OPP) layer / printing layer / polyethylene (PE) layer / aluminum vapor deposition non-oriented polypropylene (CPP) layer; Transparent vapor deposition biaxially oriented polyethylene terephthalate (PET) layer / printed layer / non-stretched polypropylene (CPP) layer; heat-silic biaxially oriented polypropylene (OPH) layer / printed layer / polyethylene (PE) layer / aluminum deposition heat An actual biaxially oriented polypropylene (OPH) layer, comprising a heat-sensitive biaxially oriented polypropylene (OPH) layer / printing layer / polyethylene (PE) layer / aluminum vapor deposition non-oriented polypropylene (CPP) layer; The heat-silic biaxially stretched polypropylene (OPH) layer / printing layer / adhesive layer / polyethylene (PE) layer / aluminum vapor deposition non-stretched polypropylene (CPP) layer, etc. are mentioned.

It does not specifically limit as a method of manufacturing the display strip of this invention, A conventionally well-known method can be used. For example, the method of adhering the said base material layer and the said sealant layer produced separately by the extrusion molding method etc. via an adhesive agent etc. is mentioned.                     

The sealant layer may be formed by a coating method. Although it does not specifically limit as a method of forming the said sealant layer by a coating method, For example, the method of laminating | stacking the hot melt adhesive containing an ethylene-vinylacetate copolymer and a tackifier on the said base material layer, etc. are mentioned. Moreover, when using a biaxially stretched polyethylene terephthalate film, a biaxially stretched polypropylene film, etc. as a base material layer, pre-processing, such as a corona treatment and an anchor coat process, is given to the surface to apply | coat a coating, or the polyethylene layer is extruded previously on a base material layer. It is preferable to laminate.

Moreover, when providing the said polyethylene layer, the method of laminating | stacking polyethylene while extrusion molding between the film containing an ethylene-vinylacetate copolymer, and a biaxially stretched polyethylene terephthalate film; The method of laminating | stacking a biaxially stretched polyethylene terephthalate film on the polyethylene layer side of the laminated | multilayer film which consists of a layer containing an ethylene-vinylacetate copolymer, and a polyethylene layer is preferable.

In addition, when the said sealant layer consists of several layers containing a peeling layer and a heat seal layer, it can manufacture by co-extrusion molding method.

Although it does not specifically limit as a method of sticking the bag which enclosed the goods to the display strip of this invention, For example, it is preferable to stick by the procedure shown in FIG. This method first places the bag enclosed with the merchandise with the front side of the bag in contact with the display strip, and then heat seals the top of the bag to bond the bag to the display strip (FIG. 6A). In a state in which a bag containing a predetermined number of products is coupled to a display strip, the bag containing each product is inverted up and down on the axis of the heat seal so that the surface of the bag is opposite to the display strip (Fig. 6B). In this state, when one end of the display strip is displayed by hanging on a hook or the like, the adhesive portion between the bag and the display strip becomes as shown in Fig. 6C. When the bag containing the product is pulled downward, the display strip can be easily pulled with a small force. Can be removed from

The strength of the seal between the bag and the display strip is not particularly limited, but is preferably 1 to 50 N / 30 mm. If it is less than 1 N / 30 mm, depending on the weight of the product, the product may fall by its own weight. If it exceeds 50 N / 30 mm, it may not fall even if the bag enclosed with the product is pulled out in a suspended state. More preferably, it is 5-30 N / 30 mm.

Moreover, about the seal | sticker state or peeling state of a bag and a display strip, it can change large also by a seal condition. Seal conditions may be changed by the shape of the sealing jaw, in addition to being changed by the temperature at the time of sealing, the contact time of the sealing jaw, the contact pressure, and the like. As a shape of the sealing jaw, the thing of the shape shown in FIG. 7 can be used, for example. Therefore, it is preferable to select the optimal seal condition according to the adhesive component which forms the sealant layer of the display strip of the present invention or the material of the surface layer of the bag. As for the width of the sealing jaw, it is selected according to the desired length of the adhesive surface between the display strip and the bag surface, but this length substantially determines the distance from the start of the peeling to the completion of the peeling when the bag is peeled off from the display strip described above. Decide

By using the display strip of the present invention, it is possible to fix the bag enclosed with the goods by heat sealing, and to attach a large amount of goods easily by automation. In addition, when the bag containing the product is removed from the display strip, the sealant layer on the display strip side is elongated and broken, and peeling occurs at the interface between the sealant layer and the surface of the bag, so that the appearance of the bag is not impaired. .

The merchandise exhibition body in which the display strip of the present invention and the bag enclosed with the merchandise are joined by heat sealing is also one of the present invention.

The present invention will be described in more detail with reference to the following Examples, but the present invention is not limited to these Examples.

(Example 1)

A biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 μm is used as a base layer, and a film having a thickness of 50 μm (Mercene MXO9 manufactured by Tosoh Corporation) containing ethylene-vinylacetate resin and a tackifier is used as the sealant layer. While the low density polyethylene (LDPE) is melt-extruded between the substrate layer and the sealant layer to be a layer having a thickness of 30 μm, the substrate layer and the sealant layer are laminated, and PET (50 μm) / LDPE (30 The sheet | seat which becomes a three-layered structure of (micrometer) / sealant layer (50 micrometers) was obtained. The obtained sheet | seat was cut out to 35 mm width, and the display strip was produced.

(Example 2)

A biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 µm is used as a base layer, and 80% by weight of an ethylene-vinylacetate resin (19% by weight of vinyl acetate) and an alicyclic hydrogenated petroleum resin (softening point 125 ° C) are used as the sealant layer. : A film having a thickness of 50 µm made of bromine 2) 20% by weight was used, and the base material layer and the sealant layer were laminated while extruding low density polyethylene (LDPE) to a layer having a thickness of 30 µm, and PET (50 µm) The sheet which consists of a 3-layered structure of / LDPE (30 micrometers) / sealant layer (50 micrometers) was obtained. The obtained sheet | seat was cut out to 35 mm width, and the display strip was produced.

(Example 3)

A 30-micrometer-thick laminated film (Melsen MX302, manufactured by Tosoh Corporation) consisting of a polyethylene layer and a sealant layer containing an ethylene-vinylacetate and a tackifier as a base layer using a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 75 µm. The laminate was laminated on the substrate layer using a dry laminate adhesive to obtain a sheet having a two-layer structure of PET (75 μm) / polyethylene sealant layer (30 μm). The obtained sheet | seat was cut out to 35 mm width, and the display strip was produced.

(Comparative Example 1)

A paper having a thickness of 70 g / m ² in terms of basis weight is used as a base material layer, and a 50 mm-thick heat-shrink biaxially oriented polypropylene film (OPH) is laminated thereon with an adhesive, and a paper (35 m) / sealant layer (50 m) ), A sheet having a two-layer structure was obtained. The obtained sheet was cut to 35 mm width to produce a display strip.

The bag which enclosed the snack confectionery was attached to the display strip produced in Examples 1-3 and the comparative example 1 by the procedure shown in FIG.

As heat-sealing conditions, it was set as 130 degreeC and 200 ms about the display strip of each Example. However, about the display strip of the comparative example 1, heat-sealing was performed at 190 degreeC and 200 ms, without adhere | attaching on this condition. In addition, the bag used the thing of the following structure.

Back structure: Heat seal biaxially oriented polypropylene (OPH) layer (20 μm) / Print layer / Polyethylene (PE) layer (10 μm) / Aluminum vapor deposition Heat seal biaxially oriented polypropylene (OPH) layer (20 μm)

The sealing strength of each display strip and encyclopedia was measured at the tensile speed of 300 mm / min using the tensile tester (Strograph V1-C by Toyo Seiki Seisakusho Co., Ltd.).

In addition, after the bag is bonded to each of the ten display strips, the bag is pulled down while the display strip is suspended, and the bag is peeled off. The bag is heat-sealed to observe the heat-sealed portion of the bag. The number of problems with the appearance of was obtained.

These results are shown in Table 1.

Table 1

division Sealing strength (N / 30mm) Number of bags with damaged appearance Example 1 18.99 0 Example 2 24.06 0 Example 3 12.80 0 Comparative Example 1 6.65 8

In Table 1, when the display strips produced in Examples 1 to 3 were used, the bags could be bonded with a high sealing strength compared to the display strips produced in Comparative Example 1, and the bags could be peeled without damaging the bags. there was.

Further, using the display strip produced in Example 1, the bag was continuously attached with a strip bag applicator described in Japanese Patent Application No. 2002-251846 to Ishida Corporation. At this time, as sealing conditions, it was set as 105 degreeC and 275 msec, and the sealing jaw used the thing which consists of two of 30 mm in width and 2 mm in length shown in FIG. 7B.

In the obtained sample, the change of the load applied to the sealing part at a tensile speed of 300 mm / min was measured using a tensile tester (Stograph V1-C manufactured by Toyo Seiki Seisakusho Co., Ltd.).

The results are shown in FIG.

In FIG. 8, a strong peak appears in the part considered to be in contact with the sealing jaw. This curve showing the change in load is also affected by the shape of the sealing jaw. In addition, the load of the second peak was in the range of ± 50% compared to the first peak.

(Example 4)

On the biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 µm, a laminate layer made of low density polyethylene having a thickness of 20 µm was provided by melt extrusion lamination method. After performing a corona treatment on this laminate layer, the EVA type hot-melt agent (7500 series 7571 by Hirodine Co., Ltd.) previously heated at 230 degreeC was coated so that it might be set to a thickness of 30 micrometers, and the sealant layer was formed. The obtained sheet | seat was cut out to 35 mm width, and the display strip was produced.

(Example 5)

A resin pellet (made by Tosoh Corporation, Melsen MXO6) and a low density polyethylene (LDPE) resin pellet containing a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 µm as a base layer and containing ethylene-vinylacetate resin and a tackifier The sheet was extruded in two layers with a tandem laminator to obtain a three-layered sheet of PET (50 μm) / LDPE (30 μm) / sealant layer (30 μm). The sheet was cut to a width of 35 mm to produce a display strip.

(Example 6)

A 100 g / m ² equivalent paper is used as the base material layer, and a pellet containing a ethylene-vinylacetate resin and a tackifier is melt-extruded to form a sealant layer having a thickness of 50 μm. Was formed to obtain a sheet having a two-layer structure of paper (50 μm) / sealant layer (50 μm). The sheet was cut to a width of 35 mm to produce a display strip.

(Example 7)

A corona treatment is performed on one surface of a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 µm, and an anchor coat agent (manufactured by Daiichi Seika Co., Ltd., 2710A and 2710B in a ratio of 1: 2 is used for this corona treatment surface). And mixed) were coated to a concentration of 1 g / m ² and dried. On the anchor coat layer, a hot melt agent (Elphan OH, manufactured by Nihon Matai Co., Ltd.) was coated to a thickness of 40 µm to form a sealant layer. The obtained sheet | seat was cut out to 35 mm width, and the display strip was produced.

According to the present invention, it is possible to provide a display strip which is easy to automate the process of attaching a bag enclosed with a product, and can be easily detached without damaging the appearance of the bag when removing the bag enclosed with the product.

Claims (17)

In the merchandise exhibition body in which a display strip for attaching and displaying a plurality of bags in which a product is enclosed side by side and a bag in which a product is enclosed by heat sealing, The display strip comprises at least a base layer and a sealant layer, wherein the sealant layer contains an ethylene-vinylacetate copolymer and a tackifier, and is heat sealable at a temperature of 70 ° C. or higher, And a sealant layer of the display strip and a surface of the bag in which the product is enclosed by heat sealing. 2. The surface of the sealant layer and the bag according to claim 1, wherein the surface of the bag in which the sealant layer and the product are encapsulated can be bonded by heat sealing, and the surface of the sealant layer and the bag when peeling off the surface of the sealant layer and the bag bonded by heat sealing. A commodity exhibit, characterized in that the peeling occurs at the interface with. The surface of the bag in which the sealant layer and the product are encapsulated can be bonded by heat sealing, and when the surface of the sealant layer and the bag bonded by heat sealing is peeled off, When peeling takes place at the interface of and the surface of the sealant layer and the bag is peeled off, the peeling is started by an initial load lower than the tensile breaking strength of the surface layer of the bag, and a load corresponding to the initial load is applied until the peeling is completed. A commodity exhibit characterized by the need to continuously or intermittently hang. delete The method according to any one of claims 1 to 3, wherein the tackifier is at least one resin selected from the group consisting of rosin resin, terpene resin, aliphatic hydrocarbon resin, alicyclic hydrocarbon resin and aromatic hydrocarbon resin. Product exhibition characterized by. delete The product exhibit according to any one of claims 1 to 3, wherein the sealant layer is formed on substantially the entire surface. The commodity exhibit according to any one of claims 1 to 3, wherein the substrate layer is made of biaxially stretched polypropylene, biaxially stretched polyethylene terephthalate, metal foil, paper, or a laminate thereof. The product exhibit according to any one of claims 1 to 3, further comprising a polyethylene layer between the base layer and the sealant layer. 10. The commodity display body according to claim 9, wherein polyethylene is extruded and laminated between an ethylene-vinylacetate copolymer and a film containing a tackifier and a biaxially stretched polyethylene terephthalate film. The product display body according to claim 9, wherein a biaxially stretched polyethylene terephthalate film is laminated on the polyethylene layer side of a laminated film composed of a layer containing an ethylene-vinylacetate copolymer and a tackifier and a polyethylene layer. The product exhibit according to any one of claims 1 to 3, wherein the bag comprises at least a sealant layer and a base layer. 13. The commodity exhibit according to claim 12, wherein the sealant layer is made of a heat seal biaxially stretched polypropylene film. 13. The commodity exhibit of claim 12, wherein the sealant layer and the base layer are laminated via an adhesive. The commodity exhibition body according to claim 12, wherein the sealant layer and the base layer are laminated via an intermediate layer. 16. A commodity exhibit according to claim 15, wherein the sealant layer and the intermediate layer are laminated via an adhesive. delete

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