JP2004359353A - Commodity display object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a commodity display object by which process automation for attaching a bag in which a commodity is enclosed is easy, and when removing the bag in which the commodity is enclosed, removal can be carried out easily without spoiling the appearance of the bag. <P>SOLUTION: The commodity display object comprises by that a display strip for exhibition by attaching the bag in which the commodity is enclosed side by side plurally by a heat seal and the bag in which the commodity is enclosed are combined by the heat seal, the above display strip is composed of at least a substrate layer and a sealant layer. The above sealant layer can retain the bag in which the commodity is enclosed by containing ethylene-vinyl acetate copolymer and a tackifier, and by combining the sealing layer with the surface of the bag in which the commodity is enclosed by the heat seal, and if the above sealing layer and the surface of the above bag combined by the heat seal are exfoliated, the above sealant layer is broken, and the removal can be carried out without damaging the surface of the bag in which the above commodity is enclosed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a display strip and a product display for displaying a plurality of bags in which a plurality of bags enclosing products are arranged and attached.

Products such as snacks are usually sold in pillow packaging (vertical pillows, horizontal pillows) and packed in bags. In many cases, the bags enclosing the products are sold side by side on display shelves of a store. However, according to this method, it is necessary to manually display one bag at a time on the display shelf, and there is a location restriction that the display can only be exhibited and sold on a predetermined display shelf.

2. Description of the Related Art A method of displaying and selling a product that does not require a display shelf, called a strip bag display, is known. The strip bag display is a display form in which a plurality of products are attached and suspended on a tape material having a predetermined width called a display strip as shown in FIG. With this display mode, display shelves are not required, and can be displayed and sold at any place such as next to a cash register in a store or at a hotel reception.

Conventionally, as a display strip, for example, a bag in which a product is sealed through a hole is attached to an adhesive tape by punching a predetermined position of a tape made of paper or resin in advance and pasting an adhesive tape from the back surface. What was attached was used. In addition, for example, a resin-made hook is attached to a predetermined position of a tape made of paper or resin in advance, and a hole punch is opened on the bag side in which the product is sealed, so that the product is hooked at that position. Attachments were also used.
However, in these display strips, there is a problem that it is difficult to automate a process of attaching a bag enclosing a product to the display strip using a machine. Therefore, strip bag displays have not been widely used.

On the other hand, a display strip has been proposed in which a bag in which a product is enclosed can be directly heat-sealed and adhered by providing a heat-sealing layer on one side. If this display strip is used, it is extremely easy to automate the process of attaching the bag enclosing the product to the display strip continuously to a series of processes for enclosing the product in the bag.

When attaching a bag enclosing the product to this display strip, it is bonded with sufficient sealing strength so that it does not drop naturally due to the product's own weight at the time of display at the store or the bag comes off during transportation. It is necessary to. However, when the seal strength is increased, when the bag enclosing the product attached to the display strip is removed, the surface layer of the bag is destroyed and the printed surface is damaged, and the appearance of the product becomes worse. In the case of (1), there is a problem in that the bag propagates to a portion other than the seal portion and peels off, and a bag or a hole for maintaining the quality of the product may be damaged or holed.

In view of the above situation, the present invention makes it easy to automate the step of attaching a bag enclosing a product, and when removing a bag enclosing a product, a display strip that can be easily removed without damaging the appearance of the bag. And a product exhibit.

The present invention is a display strip for mounting and displaying a plurality of bags in which goods are enclosed, wherein the display strip includes at least a base material layer and a sealant layer, and the sealant layer includes: 1 is a display strip containing an ethylene-vinyl acetate copolymer and a tackifier.
Hereinafter, the present invention will be described in detail.

The display strip of the present invention comprises at least a substrate layer and a sealant layer.
The sealant layer contains an ethylene-vinyl acetate copolymer and a tackifier. Since the ethylene-vinyl acetate copolymer is a resin having excellent heat sealability, the sealant layer and the surface of the bag enclosing the product can be bonded by heat seal. In addition, since heat sealing can be performed at a relatively low temperature of about 70 to 150 ° C., the speed of the heat sealing step can be easily increased, and even if the thickness of the base material layer is increased, it is sufficient. Heat sealable. By increasing the thickness of the base layer, the stiffness of the entire display strip can be strengthened, and the strength around the hole can be increased even when a hole for hanging is formed by a hole punch or the like. be able to.
Moreover, since the ethylene-vinyl acetate copolymer is a flexible elastomer, the sealant layer is not broken when the bag bonded by heat sealing is peeled off, and the bag side is not damaged.

In a conventional display strip, when the bag enclosing the product attached to the display strip by heat sealing is removed, as shown in FIG. 3, the printed layer of the bag is damaged due to the impact when the surface of the bag undergoes cohesive failure. As a result, the printing surface of the bag is damaged, and the portion other than the seal portion is damaged. In the display strip of the present invention, since the sealant layer on the display strip side contains the ethylene-vinyl acetate copolymer, the sealant layer is more easily broken than the surface of the bag. As shown in the above, when peeling, the sealant layer on the display strip side always breaks while extending, and peeling occurs at the interface between the sealant layer and the surface of the bag, so the product was enclosed without impairing the appearance The bag can be removed.

In the display strip of the present invention, further, when the sealant layer bonded by heat sealing and the surface of the bag are peeled off, the peeling starts with an initial load lower than the tensile breaking strength of the surface layer of the bag, and the peeling is completed. It is preferable to continuously or intermittently apply a load corresponding to the initial load up to this point.

The present inventors have analyzed the case where the bag was damaged at the time of peeling when the bag was bonded to the conventional display strip by heat sealing. Then, in many cases where the bag side is damaged, the load applied when the display strip and the bag bonded by heat sealing are peeled off is measured, and this is measured with respect to the distance between the display strip and the bag (distance between chucks). It was found that when plotted, a graph of the form shown in FIG. 5a was obtained. As shown in FIG. 5B, when a certain load is reached in the initial stage of separation (distance between chucks: A '), the surface layer on the bag side (here, the surface layer is a laminate of 2 to 5 layers) In a bag formed from a film, it means one layer on the outer surface side of the bag, and when the outer bag surface side is formed of heat-sealable biaxially oriented polypropylene, only the outermost heat-sealable layer However, it means a heat-sealable biaxially stretched polypropylene layer.) The outermost surface has a crack, and the fracture proceeds from the crack to the inside of the surface layer. It is considered that the peeling progresses until the completion of the process (distance between chucks: B ′).

On the other hand, in a preferred embodiment of the display strip of the present invention, a load applied when the display strip and the bag bonded by heat sealing are separated from each other is measured, and this is measured as the distance between the display strip and the bag (distance between chucks). 4a or 4a ', for example, is obtained. FIG. 4B or FIG. 4B 'is a schematic diagram showing the state of peeling at this time.
That is, since the sealant layer contains an ethylene-vinyl acetate copolymer, first, the sealant layer is stretched by an initial load lower than the tensile rupture strength of the surface layer of the bag, and peeling starts (distance between chucks: A ). As a result, since the surface layer on the bag side is not broken, the bag containing the product can be removed without deteriorating the appearance. Next, it is preferable that after the peeling starts, it is necessary to continuously or intermittently apply a load corresponding to the initial load until the peeling is completed (distance between chucks: B).

In order to be able to easily remove the product from the display strip, it is necessary to start peeling even with a relatively small force.However, like a conventional display strip, the load required for peeling quickly after the peeling starts once If the load is low, the product can easily come off even if a load is momentarily applied unintentionally during transportation or display of the product. In a preferred embodiment of the display strip of the present invention, after peeling has started, a load corresponding to the initial load must be continuously or intermittently applied until peeling is completed. Can be prevented from coming off.

This is because, for example, before the surface of the bag is broken by containing the ethylene-vinyl acetate copolymer in the sealant layer of the display strip of the present invention, peeling occurs at the interface between the bag surface and the sealant layer, At the same time as the cohesive failure of the sealant layer occurs, when the sealant layer is composed of multiple layers, the bonding strength between the layers is increased to prevent interlayer destruction, or to compare even if interlayer destruction occurs This can be realized by preventing the interlaminar breakdown from progressing unless a particularly large load is applied.

Here, to continuously apply the load corresponding to the initial load means that the load required until the completion of peeling after applying the initial load is substantially the same as the initial load, but rapidly drops. If not, the initial load may be slightly increased or decreased. Preferably, it is preferable to continue applying a load within a range of ± 50% with respect to the initial load. Further, it is more preferable that the load required until completion of peeling after the initial load is applied increases as the distance between the chucks increases (FIG. 4A).

Also, to continue to apply a load equivalent to the initial load intermittently, even if the load once decreases greatly after the initial load is applied, the load required again until peeling completes greatly increases, This means that a peak appears indicating that a load within ± 50% of the initial load is applied (FIG. 4a ′).

The vinyl acetate content in the ethylene-vinyl acetate copolymer is not particularly limited, but is preferably from 8 to 42% by weight. If it is less than 8% by weight, the adhesiveness may be insufficient, and if it exceeds 42% by weight, the film formability may be poor.
In addition, as the above-mentioned ethylene-vinyl acetate copolymer, those in which a part of a vinyl acetate component is saponified can be used. Further, as the above-mentioned ethylene-vinyl acetate copolymer, those in which at least a part thereof is carboxyl-modified can be used.
As the ethylene-vinyl acetate copolymer, a single copolymer may be used, or a mixture of two or more copolymers having different vinyl acetate contents may be used.

The tackifier is not particularly limited, but may be, for example, at least one selected from the group consisting of a rosin resin, a terpene resin, an aliphatic hydrocarbon resin, an alicyclic hydrocarbon resin, and an aromatic hydrocarbon resin. Kinds of resins are preferably used.

The rosin resin is not particularly limited and includes, 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, phenolic modification of rosin Pentaerythritol ester and the like.

The terpene resin is not particularly limited, and includes, for example, terpene, phenolic terpene, modified terpene, α-pinene polymer, β-pinene polymer, dipentene polymer, terpene-phenol copolymer and the like.

The aliphatic hydrocarbon resin is not particularly limited, and examples thereof include 1-butene, isobutylene, butadiene, and polymers mainly containing a mono- or diolefin having 4 to 5 carbon atoms such as 1,3-pentadiene. No.

The alicyclic hydrocarbon resin is not particularly limited, and may be, for example, a resin obtained by polymerizing a dimer component obtained by cyclizing and dimerizing a diene component in a spent C4-C5 fraction, or polymerizing a cyclic monomer such as cyclopentadiene. Resins, hydrogenated dicyclopentadiene resins, hydrogenated petroleum resins, and the like.

The aromatic hydrocarbon resin is not particularly limited, and examples thereof include vinyl toluene, indene, a styrene polymer, and an α-methylstyrene copolymer.
As the tackifier, for example, a commercially available one such as that described in US Pat. No. 6,117,945 can be used.

The sealant layer preferably contains 70 to 95% by weight of the ethylene-vinyl acetate copolymer and 5 to 30% by weight of the tackifier. If the content of the tackifier is less than 5% by weight, the adhesion of the sealant layer at the time of melting may be insufficient, and if it exceeds 30% by weight, the moldability may be insufficient. is there.

The sealant layer may contain wax for the purpose of improving processability and adjusting adhesive strength and the like. The wax is not particularly limited. For example, olefin wax, paraffin wax, aliphatic ester wax, deoxidized carnauba wax, saturated aliphatic acid wax, unsaturated aliphatic acid wax, saturated alcohol wax, Examples thereof include an aliphatic alcohol wax, a polyhydric alcohol wax, a saturated fatty acid amide wax, a saturated fatty acid bisamide wax, an unsaturated acid amide wax, and an aromatic bisamide wax.
The sealant layer may further contain a commonly used additive such as an ultraviolet ray inhibitor, an antioxidant, a plasticizer, a lubricant, a pigment, and a dye, if 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 striped pattern, or may be formed only at a predetermined position where a product is attached. . When the display strip is formed on substantially the entire surface, the product can be attached to an arbitrary position of the display strip, which is preferable. Here, “substantially” means that it does not include a position where a drilling process is performed, a peripheral portion where a product is not attached, and the like.

The base material layer is not particularly limited, but has sufficient strength from the application of hanging a large number of products and hanging, and preferably has heat resistance that does not melt or deteriorate during heat sealing, for example, Biaxially oriented polypropylene (OPP), biaxially oriented polyethylene terephthalate, metal foil, paper or a laminate thereof is preferred.

The thickness of the substrate layer is not particularly limited, but is preferably 30 to 200 μm. If the thickness is less than 30 μm, sufficient strength may not be obtained and the product may be damaged at the time of display or removal of the bag enclosing the product. If the thickness is more than 200 μm, the base material layer acts as a heat insulating material and heat seals. Sometimes heat is not sufficiently transmitted to the sealant layer. As described above, since the ethylene-vinyl acetate copolymer contained in the sealant layer is excellent in low-temperature heat sealability, if the thickness of the base material layer is increased within a range that does not impair the heat sealability, a display is obtained. The stiffness of the entire strip can be increased, and the strength around the hole can be increased even when a hole for suspension is formed by a hole punch or the like.

It is preferable that the display strip of the present invention further has a polyethylene layer between the base material layer and the sealant layer. Since polyethylene is flexible and has a high tensile elongation, the strength of the entire display strip of the present invention is improved by having the above-mentioned polyethylene layer, and when a punching process (a hole punch) for suspending the display strip is performed, When the product is removed, it becomes possible to withstand the load applied to that part. Further, the polyethylene layer also serves to bond the base material layer and the sealant layer. Lamination of polyethylene can be performed by laminating polyethylene between the base material layer and the sealant layer while extruding the polyethylene. In addition, other than polyethylene, an ethylene- (meth) acrylic acid copolymer or an ionomer of an ethylene- (meth) acrylic acid copolymer may be used.
The base layer and the sealant layer may be laminated via an adhesive by a known dry lamination method, or may be laminated by a thermal lamination method using no solvent or adhesive.
The thickness of the polyethylene layer is not particularly limited, but is preferably 5 to 50 μm. If it is less than 5 μm, a sufficient effect of improving strength may not be obtained, and if it is more than 50 μm, the thickness of the entire display strip becomes thick and the heat sealing property may be impaired due to the heat insulating effect. .

The display strip of the present invention may further include a layer that ensures another function between the base layer and the sealant layer. As such a layer, for example, a printing layer and the like can be mentioned. In particular, when a polymer is used as the base layer, the printing layer is preferably provided between the base layer and the sealant layer, and when paper is used as the base layer, the paper is not laminated. Preferably, printing is performed on the surface.

The form of the display strip of the present invention is not particularly limited, and examples thereof include a tape shape and a sheet shape. In addition, one end of the display strip of the present invention may be provided with a perforation for hanging the display strip to which the product is attached and hanging it on a hook for display, and a clip or the like may be attached. In particular, drilling is preferable because it can be easily performed in a series of automation steps. However, when a hole is formed in the display strip and the hook is hooked on the hook, the hole is easily broken by applying force to the hole, so that the base layer is strengthened or polyethylene is interposed between the base layer and the sealant layer. It is preferable to use one having a layer or a nylon layer.

As a bag for enclosing a product to be attached to the display strip of the present invention, any of commonly used bags can be used, and among them, a bag composed of at least a sealant layer and a base material layer is preferable. The sealant layer on the surface of the bag is preferably made of at least one selected from the group consisting of polypropylene, a copolymer of propylene and another olefin, low-density polyethylene, and an ethylene-vinyl acetate copolymer. . The sealant layer on the surface of the bag is preferably made of a heat-sealable biaxially oriented polypropylene (OPH) film. The heat-sealable biaxially oriented polypropylene (OPH) film is usually a very thin film made of a heat-sealing resin such as propylene-ethylene-butene terpolymer on the surface of biaxially oriented polypropylene (OPP). It means that a heat sealing property is imparted by providing a polymer layer, and it is widely used for bag materials especially in Europe and the United States. In addition, it is preferable that the sealant layer on the surface of the bag does not contain the cohesive failure component described above.

It is preferable that the sealant layer and the base material layer constituting the bag for enclosing the product are laminated via an adhesive. Since high interlayer adhesion is obtained by laminating via 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 the interface between the display strip and the bag or the inside of the display strip. Destruction is more likely to occur.

Further, the sealant layer and the base material layer constituting the bag for enclosing the product may be laminated via an intermediate layer. In this case, it is preferable that the sealant layer and the intermediate layer are laminated via an adhesive. Since a high interlayer adhesion is obtained by laminating the sealant layer and the intermediate layer via 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 the display strip and the Breakage easily occurs at the interface with the bag or inside the display strip.
The bag enclosing such products should be co-extruded with a heat-sealable polymer together with the polymer forming the base layer, or coated with a heat-sealable polymer such as a hot melt adhesive on the base layer. Can be manufactured.

As a bag for enclosing a product to be attached to the display strip of the present invention, for example, a biaxially oriented polypropylene (OPP) layer / printing layer / adhesive layer / polyethylene (PE) layer / aluminum-deposited polyethylene terephthalate (PET) layer / polyethylene ( (PE) layer / unstretched polypropylene (CPP) layer; biaxially stretched polypropylene (OPP) layer / printing 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-deposited unstretched polypropylene (CPP) layer; biaxially oriented polypropylene (OPP) layer / printing layer / polyethylene (PE) Layer / No aluminum deposition What consists of a stretched polypropylene (CPP) layer; What consists of a transparent vapor-deposited biaxially stretched polyethylene terephthalate (PET) layer / printing layer / unstretched polypropylene (CPP) layer; Heat-sealable biaxially stretched polypropylene (OPH) layer / printing layer / Polyethylene (PE) layer / aluminum-deposited heat-sealable biaxially-stretched polypropylene (OPH) layer; heat-sealable biaxially-stretched polypropylene (OPH) layer / printing layer / polyethylene (PE) layer / aluminum-deposited unstretched polypropylene (CPP) And a layer comprising a heat-sealable biaxially oriented polypropylene (OPH) layer / printing layer / adhesive layer / polyethylene (PE) layer / aluminum-deposited unstretched polypropylene (CPP) layer.

The method for producing the display strip of the present invention is not particularly limited, and a conventionally known method can be used. For example, there is a method of bonding the above-mentioned base material layer and the above-mentioned sealant layer separately produced by an extrusion molding method or the like via an adhesive.

Further, the sealant layer may be formed by a coating method. The method for forming the sealant layer by a coating method is not particularly limited, but, for example, a method of laminating a hot melt adhesive containing an ethylene-vinyl acetate copolymer and a tackifier on the base material layer, and the like. Is mentioned. When a biaxially stretched polyethylene terephthalate film or a biaxially stretched polypropylene film is used as the base material layer, the surface to be coated may be subjected to a pretreatment such as a corona treatment or an anchor coat treatment, or the base material layer. It is preferable that a polyethylene layer is previously extrusion-laminated on top.

When the polyethylene layer is provided, a method of laminating a film containing an ethylene-vinyl acetate copolymer and a biaxially stretched polyethylene terephthalate film while extruding polyethylene; ethylene-vinyl acetate copolymer A method of laminating a biaxially stretched polyethylene terephthalate film on the polyethylene layer side of a laminated film composed of a layer containing the union and a polyethylene layer is suitable.
Further, when the sealant layer includes a plurality of layers including a release layer and a heat seal layer, the sealant layer can be manufactured by a co-extrusion molding method.

The method for attaching the bag enclosing the product to the display strip of the present invention is not particularly limited. For example, it is preferable to attach the bag by the procedure shown in FIG. In this method, first, the bag enclosing the product is placed such that the front side of the bag contacts the display strip, and then the bag is bonded to the display strip by heat sealing the top of the bag (FIG. 6a). After the bags enclosing a predetermined number of products are joined to the display strip, the bags enclosing the products are turned upside down around the heat seal portion so that the surface of the bags is on the opposite side of the display strip ( Figure 6b). In this state, if one end of the display strip is hung on a hook or the like and displayed, the bonding portion between the bag and the display strip is as shown in FIG. 6c. It can be easily removed from the display strip by force.

The sealing strength 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, the product may drop due to its own weight depending on the weight of the product, and if it exceeds 50 N / 30 mm, it may not come off even if the bag containing the product is suspended and pulled. is there. More preferably, it is 5 to 30 N / 30 mm.

Note that the sealing state and the peeling state between the bag and the display strip can vary greatly depending on the sealing conditions. The sealing conditions vary depending on the temperature at the time of sealing, the contact time of the seal jaws, the contact pressure, and the like, as well as the shape of the seal jaws. As the shape of the seal jaw, for example, the shape shown in FIG. 7 can be used. Therefore, it is preferable to select optimal sealing conditions according to the adhesive component forming the sealant layer of the display strip of the present invention and the material of the surface layer of the bag. The width of the sealing jaw is selected according to the desired length of the adhesive surface between the display strip and the bag surface, and this length is determined from the above-described start of peeling when peeling the bag from the display strip to completion of peeling. The distance to is substantially determined.

By using the display strip of the present invention, a bag in which a product is enclosed can be fixed by heat sealing, and a large number of products can be easily attached by automation. Furthermore, when the bag enclosing the product is removed from the display strip, the sealant layer on the display strip side is broken so as to extend, and peeling occurs at the interface between the sealant layer and the surface of the bag. Does not impair.
A product display in which the display strip of the present invention and the bag in which the product is sealed is connected by heat sealing is also one of the present invention.

ADVANTAGE OF THE INVENTION According to this invention, the automation of the process of attaching the bag which enclosed the goods is easy, and when removing the bag which enclosed the goods, the display strip which can be easily removed without spoiling the appearance of a bag, and a product display Can provide body.

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

(Example 1)
A 50 μm-thick biaxially stretched polyethylene terephthalate (PET) film was used as a base layer, and a 50 μm-thick film (Mersen MX09, manufactured by Tosoh Corporation) containing an ethylene-vinyl acetate resin and a tackifier was used as a sealant layer. Then, while the low-density polyethylene (LDPE) is melt-extruded into a layer having a thickness of 30 μm between the substrate layer and the sealant layer, the substrate layer and the sealant layer are laminated. And a sheet having a three-layer structure of PET (50 μm) / LDPE (30 μm) / sealant layer (50 μm). The obtained sheet was cut into a width of 35 mm to produce a display strip.

(Example 2)
A biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 μm is used as a base material layer, and as a sealant layer, 80% by weight of an ethylene-vinyl acetate resin (vinyl acetate content: 19% by weight) and an alicyclic hydrogenated petroleum resin (softening point) 125 ° C .: bromine number 2) While extruding a low-density polyethylene (LDPE) into a layer having a thickness of 30 μm using a 50 μm-thick film composed of 20% by weight, the base material layer and the sealant layer are separated. Lamination was performed to obtain a sheet having a three-layer structure of PET (50 μm) / LDPE (30 μm) / sealant layer (50 μm). The obtained sheet was cut into a width of 35 mm to produce a display strip.

(Example 3)
Using a biaxially oriented polyethylene terephthalate (PET) film having a thickness of 75 μm as a base layer, a 30 μm-thick laminated film (manufactured by Tosoh Corporation) comprising a polyethylene layer and a sealant layer containing ethylene-vinyl acetate and a tackifier. , Mersen MX302) was laminated on the base layer using a dry laminating adhesive to obtain a sheet having a two-layer structure of PET (75 μm) / polyethylene sealant layer (30 μm). The obtained sheet was cut into a width of 35 mm to produce a display strip.

(Comparative Example 1)
A paper having a thickness of 70 g / m ² in terms of basis weight is used as a base layer, and a heat-sealable biaxially oriented polypropylene film (OPH) having a thickness of 50 μm is laminated thereon via an adhesive to form a paper (35 μm) / A sheet having a two-layer structure of a sealant layer (50 μm) was obtained. The obtained sheet was cut into a width of 35 mm to produce a display strip.

A bag enclosing snacks was attached to the display strips produced in Examples 1 to 3 and Comparative Example 1 by the procedure shown in FIG.
The heat sealing conditions were set to 130 ° C. and 200 ms for the display strip of each example. However, since the display strip of Comparative Example 1 did not adhere under these conditions, heat sealing was performed at 190 ° C. for 200 ms. The bag used had the following structure.
Bag configuration: heat-sealable biaxially oriented polypropylene (OPH) layer (20 μm) / printing layer / polyethylene (PE) layer (10 μm) / aluminum-deposited heat-sealable biaxially oriented polypropylene (OPH) layer (20 μm)

The sealing strength between each display strip and the bag was measured using a tensile tester (Strograph V1-C, manufactured by Toyo Seiki Seisaku-sho, Ltd.) at a tensile speed of 300 mm / min.
For each of the ten display strips, after the bags were combined, the bags were pulled down while the display strips were suspended, the bags were peeled off, and the heat-sealed portions of the bags were visually observed and printed. The number of those having a problem in appearance on the bag side, such as a damaged layer, was determined.
Table 1 shows the results.

表１より、実施例１〜３で作製したディスプレイストリップを用いれば、比較例１で作製したディスプレイストリップに比べて高いシール強度で袋を結合することができ、一方、袋を損傷することなく剥離することができた。

From Table 1, using the display strips manufactured in Examples 1 to 3, the bags can be bonded with a higher seal strength than the display strips manufactured in Comparative Example 1, while the bags are peeled without damaging the bags. We were able to.

Further, using the display strip prepared in Example 1, bags were continuously attached by a Strip bag Applicator described in Japanese Patent Application No. 2002-251846 filed by Ishida Corporation. At this time, the sealing conditions were 105 ° C. and 275 msec, and two sealing jaws having a width of 30 mm and a length of 2 mm shown in FIG. 7B were used.
Using a tensile tester (manufactured by Toyo Seiki Seisaku-Sho, Ltd., Strograph V1-C), a change in load applied to the seal portion was measured at a tensile speed of 300 mm / min.
The results are shown in FIG.
In FIG. 8, a peak of strength appears at a portion where the seal jaw seems to have contacted. Thus, the curve indicating the change in load is affected by the shape of the seal jaw. Further, the second peak had a load within a range of ± 50% as compared with the first peak.

(Example 4)
A laminate layer made of low-density polyethylene having a thickness of 20 μm was provided on a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 μm by a melt extrusion lamination method. After performing a corona treatment on this laminate layer, a sealant layer is formed by coating an EVA-based hot melt agent (manufactured by Hirodyne Co., Ltd., 7500 series 7571) preheated to a temperature of 230 ° C. to a thickness of 30 μm. did. The display sheet was produced by cutting the obtained sheet into a width of 35 mm.

(Example 5)
Using a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 μm as a base layer, a resin pellet containing ethylene-vinyl acetate resin and a tackifier (manufactured by Tosoh Corporation, Mersen MX06) and a low density polyethylene (LDPE) resin The pellets were extruded into two layers with a tandem laminator to obtain a sheet having a three-layer structure of PET (50 μm) / LDPE (30 μm) / sealant layer (30 μm). The display sheet was produced by cutting the obtained sheet into a width of 35 mm.

(Example 6)
Using a paper having a basis weight of 100 g / m ² as a base layer, a pellet (Mersen MX06, manufactured by Tosoh Corporation) containing an ethylene-vinyl acetate resin and a tackifier is melt-extruded on the base layer. 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 display sheet was produced by cutting the obtained sheet into a width of 35 mm.

(Example 7)
One side of a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 50 μm is subjected to corona treatment, and an anchor coat agent (2710A and 2710B, manufactured by Dainichi Seika Kogyo Co., Ltd. at a ratio of 1: 2) is applied to the corona treated surface. Was mixed and applied to a concentration of 1 g / m ² and dried. Further, on this anchor coat layer, a hot melt agent (manufactured by Nippon Matai Co., Ltd., Elphan OH) was coated to a thickness of 40 μm to form a sealant layer. The display sheet was produced by cutting the obtained sheet into a width of 35 mm.

ADVANTAGE OF THE INVENTION According to this invention, the automation of the process of attaching the bag which enclosed the goods is easy, and when removing the bag which enclosed the goods, the display strip which can be easily removed without spoiling the appearance of a bag, and a product display Can provide body.

It is a schematic diagram which shows a strip bag display. It is a schematic diagram which shows a mode when removing the bag joined to the display strip of this invention. It is a schematic diagram which shows a mode when removing the bag joined to the conventional display strip. FIG. 4 is a schematic view showing a change in load applied when a bag connected to the display strip of the present invention is removed. FIG. 9 is a schematic diagram showing a change in load applied when a bag connected to a conventional display strip is removed. It is a schematic diagram which shows an example of the procedure which attaches the bag which enclosed the goods to the display strip of this invention. It is a schematic diagram which shows an example of the form of a seal jaw. FIG. 4 is a diagram illustrating a change in load applied when removing a bag connected to the display strip manufactured in Example 1.

Explanation of reference numerals

1 display strip 2 bag containing the product 3 sealant layer 4 base material layer 5 sealant layer (bag side)
6 printing layer (bag side)
7 Seal part

Claims (16)

A product display body in which a display strip for mounting and displaying a plurality of bags in which products are enclosed by heat sealing and attaching the bags and a bag in which the products are sealed are connected by heat sealing,
The display strip is at least composed of a base material layer and a sealant layer, and the sealant layer contains an ethylene-vinyl acetate copolymer and a tackifier, and is sealed with a sealant layer and a product-enclosed bag. The surface of the bag can be held by bonding by heat sealing with the surface of the product, and the sealant layer is broken when the surface of the bag and the sealant layer bonded by heat sealing are peeled off. A product display, wherein the product can be removed without damaging the surface of the bag in which the product is enclosed. 2. The product display according to claim 1, wherein peeling occurs at an interface between the sealant layer and the surface of the bag when the sealant layer and the surface of the bag are separated by heat sealing. 3. When peeling off the sealant layer and the bag surface bonded by heat sealing, peeling occurs at the interface between the sealant layer and the bag surface, and peeling off the sealant layer and the bag surface. 2. The product display according to claim 1, wherein peeling starts with an initial load lower than the tensile rupture strength of the surface layer of the bag, and a load corresponding to the initial load needs to be continuously or intermittently applied until peeling is completed. The product display according to claim 1, 2 or 3, wherein the ethylene-vinyl acetate copolymer has a vinyl acetate content of 8 to 42% by weight. The tackifier is at least one resin selected from the group consisting of a rosin resin, a terpene resin, an aliphatic hydrocarbon resin, an alicyclic hydrocarbon resin, and an aromatic hydrocarbon resin. Item 2, 3, 3 or 4. The product exhibit according to claim 1, 2, 3, 4, or 5, wherein the sealant layer contains 70 to 95% by weight of an ethylene-vinyl acetate copolymer and 5 to 30% by weight of a tackifier. 7. The commodity display according to claim 1, 2, 3, 4, 5, or 6, wherein the sealant layer is formed on substantially the entire surface. The product display according to claim 1, 2, 3, 4, 5, 6, or 7, wherein the base layer is made of biaxially oriented polypropylene, biaxially oriented polyethylene terephthalate, metal foil, paper, or a laminate thereof. 9. The product display according to claim 1, further comprising a polyethylene layer between the base material layer and the sealant layer. The product display according to claim 9, wherein polyethylene is laminated while extruding polyethylene between a film containing an ethylene-vinyl acetate copolymer and a tackifier and a biaxially stretched polyethylene terephthalate film. The product display according to claim 9, wherein a biaxially stretched polyethylene terephthalate film is laminated on the polyethylene layer side of a laminated film comprising a layer containing an ethylene-vinyl acetate copolymer and a tackifier and a polyethylene layer. The product display according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, wherein the bag comprises at least a sealant layer and a base material layer. 13. The product display according to claim 12, wherein the sealant layer is made of a heat-sealable biaxially stretched polypropylene film. 14. The product display according to claim 12, wherein the sealant layer and the base material layer are laminated via an adhesive. 14. The product display according to claim 12, wherein the sealant layer and the base material layer are laminated via an intermediate layer. The product display according to claim 15, wherein the sealant layer and the intermediate layer are laminated via an adhesive.

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