JP2004168418A - Display strip and merchandise display body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a merchandise display body and a display strip which facilitates the automatic attachment of a bag enclosing merchandise and the removal of the bag enclosing merchandise without spoiling the outer appearance of the bag. <P>SOLUTION: This display strip is used for attaching and displaying in line a plurality of bags enclosing merchandise, and comprises at least a base material layer 4 and a sealant layer 3 containing an easy peel resin composition made of an adhesive component and a cohesive failure component. The bag surface and the sealant layer 3 can be joined by heat sealing, and when the bag surface and the sealant layer joined by heat sealing are separated, the sealant layer 3 breaks down. <P>COPYRIGHT: (C)2004,JPO

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 process 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 relates to a display strip for displaying a bag in which a plurality of bags in which goods are enclosed are attached side by side, for display, wherein the sealant comprises an easy-peelable resin composition comprising at least a base material layer, an adhesive component and a cohesive failure component. The sealant layer and the surface of the bag can be bonded by heat sealing, and when the sealant layer and the surface of the bag bonded by heat sealing are separated, the sealant layer is It is a display strip that is destroyed.
Hereinafter, the present invention will be described in detail.

The display strip of the present invention comprises at least a base material layer and a sealant layer containing an easy-peelable resin composition.
In the present specification, the easy peel property means a property that a film or the like adhered by a method such as heat sealing can be easily peeled off from an adherend using a human hand so as not to be damaged. The conductive resin composition means a resin composition capable of exhibiting such an easy-peeling property when used for bonding a film or the like to an adherend. In the present invention, since it is required that the bag can be easily removed from the display strip without damaging the surface of the bag, the tensile strength is lower than the tensile breaking strength of the surface layer of the bag, and the inside of the display strip is mainly reduced. It is preferred that cohesive failure occurs in the above. In this case, peeling between the layers constituting the display strip or peeling at the interface between the display strip and the bag surface may be accompanied. Therefore, in the present invention, the easy-peelable resin composition comprises, in addition to a component contributing to adhesion to the bag surface (hereinafter also referred to as an adhesive component), a component contributing to easy-peelability (hereinafter referred to as a cohesive failure component). Also referred to as).

The adhesive component is not particularly limited as long as it can impart heat sealability to the surface of the bag to the sealant layer, but most of the bags currently used in Europe and the United States have heat sealable biaxially oriented polypropylene as a sealant layer on the surface. In view of the use of (OPH), copolymers of propylene and other olefins such as polypropylene and propylene-ethylene-butene terpolymer, and low-polymers such as single-site catalyzed linear polyethylene. At least one selected from the group consisting of high density polyethylene is suitably used. Among them, those containing polypropylene or a copolymer of propylene and another olefin as a main component and further blending low-density polyethylene to lower the melting point are more preferable. Here, examples of the other olefin include an α-olefin having 2 to 12 carbon atoms (excluding 3 carbon atoms), and ethylene, 1-butene, 3-methyl-1-butene, and 3-methyl-1 pentene. , 4-methyl-1-pentene, 4-dimethyl-1-pentene, vinylcyclopentene, vinylcyclohexane and the like. As the copolymer of propylene and another olefin, a binary copolymer or a ternary copolymer of propylene and these monomers is preferably used.
The cohesive failure component is not particularly limited as long as it can impart an easy peel property to the sealant layer more easily than the surface layer of the bag to be mated, and examples thereof include a styrene-based polymer and polybutene-1. .

In the present specification, a styrene-based polymer means a resin having a styrene-based monomer such as styrene, α-methylstyrene, chlorostyrene or the like as a constituent unit. More specifically, it includes a homopolymer of a styrene monomer and a copolymer of a styrene monomer and another monomer. Here, the above-mentioned copolymer includes a graft copolymer and a block copolymer. Other monomers include acrylonitrile, (meth) acrylic acid, (meth) acrylic acid ester, ethylene, propylene, butylene and other C2-C12 α-olefins; butadiene, isoprene and other C4-C15 conjugates. And diene monomers.
Examples of the styrene-based polymer include styrene-butylene copolymer, styrene-butylene-styrene block copolymer, styrene-isoprene copolymer, styrene-isoprene-styrene block copolymer, styrene-butadiene copolymer, Styrene-based elastomers such as styrene-butadiene-olefin block copolymers and the like can be mentioned. These styrene polymers and polybutene-1 may be used alone or in combination of two or more.
The sealant layer may be composed of a single layer, or may be composed of a plurality of layers. When the sealant layer is a single layer, the content of the adhesive component and the cohesive failure component is not particularly limited, and is appropriately selected according to the surface layer of the other bag. In general, the higher the content of the adhesive component, the higher the heat sealing property, and the higher the content of the cohesive failure component, the more likely the cohesive failure occurs. Moreover, you may mix | blend so that the content of the adhesive component of the side which heat-seals with the bag of the said sealant layer may become large.

When the sealant layer is composed of a plurality of layers, the sealant layer contains the above-mentioned easy-peelable resin composition and adheres to the surface layer of the bag by heat sealing. It is preferable to include a support layer that connects the material layer and the adhesive layer. In this case, the adhesive layer may further be composed of a plurality of layers, the content of the cohesive failure component of the layer in contact with the surface layer of the bag is increased, and the content of the cohesive failure component is increased toward the support layer. By reducing this, it is possible to impart the performance that the load required until the completion of peeling after the application of the initial load described later is larger than the initial load and increases as the distance between the chucks increases. The support layer contains a component forming the adhesive layer or a component similar thereto, such as polypropylene; polyethylene; a copolymer of ethylene or propylene and another α-olefin; It is preferable to use a composition having a slightly higher melting point in order to support the adhesive layer while securing the adhesiveness to the adhesive layer. In addition, even when interlayer destruction occurs between the adhesive layer and the support layer at the time of peeling, since the affinity between the adhesive layer and the support layer is high, the peeling is completed. This can provide a performance that a load corresponding to the initial load needs to be continuously or intermittently applied until the load is increased.

The thickness of the adhesive layer is preferably 1 to 30 μm. If it is less than 1 μm, sufficient sealing strength may not be obtained, and if it exceeds 30 μm, it may take time to perform heat sealing. The thickness of the support layer is preferably 5 to 50 μm. When the thickness is less than 5 μm, the function as the above-described support layer may not be sufficiently performed. When the thickness is more than 50 μm, it may take time to perform heat sealing.

Preferably, the sealant layer is transparent. When the sealant layer is transparent, the appearance is not impaired even if the residue of the sealant layer adheres to the bag enclosing the product after peeling.

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 sealant layer and the surface of the bag enclosing the product can be bonded by heat sealing, and when the sealant layer bonded by heat sealing and the surface of the bag are peeled off, the sealant layer is broken.

FIG. 2 shows a basic mode of the breakage of the sealant layer. In the embodiment shown in FIG. 2a, failure occurs at approximately the interface between the sealant layer and the bag, and only a small portion of the surface of the sealant layer is destroyed. In the embodiment shown in FIG. 2b, the sealant layer has undergone cohesive failure. In the embodiment shown in FIG. 2C, once the sealant layer has undergone cohesive failure, interlayer failure has occurred when the failure reaches a plurality of layers forming the sealant layer. The destruction of the sealant layer can occur in any of the above-described embodiments, and can also occur in a mixed type of these embodiments.

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 easy-peeling resin composition, the sealant layer on the display strip side is more easily broken than the surface of the bag. As shown in the drawing, the sealant layer on the display strip side is always broken at the time of peeling, so that the bag enclosing the product can be removed without impairing the appearance.
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 the easy-peeling resin composition, first, cohesive failure of the sealant layer occurs due to an initial load lower than the tensile breaking 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 that the peeling starts even with a relatively small force.However, like the conventional display strip, the load required for the peeling rapidly after the peeling starts once When 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 easy-peelable resin composition in the sealant layer of the display strip of the present invention, breakage occurs at the interface between the bag surface and the sealant layer, or the sealant At the same time as the cohesive failure of the layers occurs, when the sealant layer is composed of a plurality of layers, the bonding strength between the layers is increased to prevent the interlayer destruction, or even if the interlayer destruction occurs, This can be realized by preventing the interlayer destruction from proceeding unless a 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 substrate layer constituting the display strip of the present invention is not particularly limited, but has sufficient strength for use in attaching and suspending a large number of products, and has heat resistance that does not melt or deteriorate during heat sealing. Preferably, it has at least one selected from the group consisting of biaxially oriented polypropylene, biaxially oriented polyethylene terephthalate, metal foil, and paper.

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.

The display strip of the present invention further comprises a layer comprising a polyethylene, an ethylene- (meth) acrylic acid copolymer or an ionomer of an ethylene- (meth) acrylic acid copolymer between the base material layer and the sealant layer. Are preferably laminated. Since these resins are flexible and have high tensile elongation, by laminating layers made of such resins, the strength of the entire display strip of the present invention is improved, and a hole punching process for suspending the display strip (hole punching) is performed. ), It becomes possible to withstand the load applied to the part when the product is removed. Such a layer also plays a role of bonding the base material layer and the sealant layer. Such a method of laminating the layers can be performed by laminating a predetermined resin between the base material layer and the sealant layer while extruding the resin. Further, the base material layer and the sealant layer may be laminated via an adhesive by a known dry lamination method.

The thickness of the layer made of polyethylene or the like 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 a heat insulating effect is exerted.

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.

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 having a surface provided with a sealant 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.
Examples of the bag for enclosing a product to be attached to the display strip of the present invention include a biaxially oriented polypropylene (OPP) layer / printing layer / polyethylene (PE) layer / aluminum-deposited polyethylene terephthalate (PET) layer / polyethylene (PE) layer / A bag composed of a non-stretched polypropylene (CPP) layer; a bag composed of a transparent vapor-deposited biaxially stretched polyethylene terephthalate (PET) layer / printing layer / a non-stretched polypropylene (CPP) layer; Heat-sealable biaxially-stretched polypropylene (OPH) layer / printing layer / polyethylene (PE) layer / aluminum-deposited heat-sealable biaxially-stretched polypropylene (OPH) 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, a method of bonding the above-mentioned base material layer and sealant layer separately produced by an extrusion molding method or the like via an adhesive, or, when the above-mentioned polyethylene layer or the like is provided, a polyethylene layer or the like on the base material layer, such as a sealant. A method of laminating layers can be used.
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 / 15 mm. If it is less than 1 N / 15 mm, the product may drop due to its own weight depending on the weight of the product, and if it exceeds 50 N / 15 mm, it may not come off even if you pull the bag containing the product in a suspended state. is there. More preferably, it is 5 to 30 N / 15 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 and cohesive failure 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 seal jaw is selected according to the desired length of the bonding surface between the display strip and the bag surface, and this length is determined from the start of peeling when peeling the bag from the display strip to the 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. Further, when the bag enclosing the product is removed from the display strip, the sealant layer on the display strip side is broken, so that the appearance of the bag is not spoiled.
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 60 μm-thick cohesive failure type film having easy peelability (Showa Denko Plastic Products, Shorex Aroma Film TPF1) having a thickness of 60 μm was formed on a 38 μm-thick biaxially stretched polyethylene terephthalate film by a usual dry lamination method. A display strip was prepared by slitting the laminated body to a width of 35 mm.

(Comparative Example 1)
A heat-sealable biaxially-stretched polypropylene film (OPH) is laminated on a paper having a basis weight of 70 g / m ² as a base layer via an adhesive via an adhesive, and the obtained laminate is slit with a slitter. To form a display strip by slitting to a width of 35 mm.

(Example 2)
A 50 μm-thick biaxially stretched polyethylene terephthalate film is coated with a 35 μm-thick cohesive failure type film having easy peelability (Showa Denko Plastic Products, Shorex Aroma Film TP9) by a usual dry lamination method. A display strip was prepared by slitting the laminated body to a width of 35 mm.

(Example 3)
On a 50 μm-thick biaxially stretched polyethylene terephthalate (PET) film, a cohesive failure type film having easy peelability (Showa Denko Plastic Products Co., Ltd., Shorex Aroma Film TPF1) and a low extrusion usually used for extrusion lamination. A high density polyethylene (LDPE) film was extruded to obtain a PET (50 μm) / LDPE (30 μm) / TPF1 (40 μm) laminated film. A display strip was prepared by slitting the obtained laminated film to a width of 35 mm.

(Comparative Example 2)
A non-stretchable, non-stretchable polypropylene (trade name: FCMN, manufactured by Nimura Chemical Industry Co., Ltd.) was dry-laminated on coated paper having a basis weight of 90 g / m ² , and this was slit into a 35 mm width using a slitter to produce a display strip.

(Comparative Example 3)
A biaxially oriented polypropylene film having a thickness of 50 μm is used as a base material layer, and a low-density polyethylene layer having a thickness of 30 μm and a general-purpose unstretched polypropylene film having a thickness of 30 μm as a sealant layer (trade name “P1128” manufactured by Toyobo Co., Ltd.) ) Were laminated in this order, and this was slit to a width of 35 mm using a slitter to produce a display strip.

The display strips produced in Example 1 and Comparative Example 1 were heat-sealed with a bag formed from a film having the following structure. For attaching the bag to the display strip, a Strip bag Applicator (the shape of the sealing jaw is shown in FIG. 7B) described in Japanese Patent Application No. 2002-251846 filed by Ishida Co., Ltd. is used, and heat sealing conditions are 190 ° C. , 350 msec.
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 bag was cut into a width of 15 mm after sealing, and the change in load applied to the seal portion was measured at a tension speed of 300 mm / min using a tensile tester (Strograph V1-C, manufactured by Toyo Seiki Seisaku-sho, Ltd.). Further, the tensile strength of the bag surface layer (OPH) used for comparison was measured under the same conditions.
FIG. 8 shows the change in load applied when removing the bag connected to the display strip manufactured in Example 1, and FIG. 9 shows the change in load applied when removing the bag connected to the display strip manufactured in Comparative Example 1. FIG. 10 shows the measurement results of the tensile strength performed on the surface layer of the bag.

As shown in FIG. 10, the surface layer of the bag has a strength of 40N, whereas the display strip prepared in Example 1 has a lower strength and does not damage the bag surface. The bag could be removed. As shown in FIG. 8, in the display strip of Example 1, a load corresponding to the initial load is applied intermittently from the start of the peeling until the peeling is completed. In the case of Comparative Example 1 shown in FIG. 9, cracks were formed in the surface layer of the bag, and the cracks progressed inside the bag surface layer, so that the fracture proceeded with a strength lower than the strength of the surface layer of the bag.
In addition, for these samples obtained, the number of items dropped by the time of packing work in a cardboard box by hand and taking out from the packed state until display was counted, and the display strip prepared in Example 1 was used. When the display strip prepared in Comparative Example 1 was used, three out of ten pieces were dropped off at the time of packing, and an additional 4 to 5 pieces were displayed at the time of display, compared to the case where no product was dropped off. Dropped out.

Further, the display strips manufactured in Examples 2 and 3 and Comparative Examples 2 and 3 were evaluated by the following methods.
As a bag material, a 50 μm thick film composed of a sealable biaxially oriented polypropylene layer of 20 μm / a low density polyethylene layer of 10 μm / a sealable aluminum vapor-deposited biaxially oriented polypropylene layer of 20 μm was prepared.
The display strip and the bag material were sealed using a thermal gradient tester (Heatgradient, manufactured by Toyo Seiki Seisaku-sho, Ltd.) under the conditions of a sealing temperature of 190 ° C., a sealing time of 0.5 sec, and a sealing pressure of 0.4 MPa.

After sealing, the sheet was cut to a width of 15 mm. Using a tensile tester (manufactured by Toyo Seiki Seisaku-Sho, Ltd., Strograph V1-C), the change in load applied to the seal portion was measured at a tensile strength of 300 mm / min, and peeling was performed. Was observed.
As a result, when the display strips manufactured in Examples 2 and 3 were used, the display strips could be removed without damaging the bag surface, whereas in the case of the display strips manufactured in Comparative Examples 2 and 3. In the case of, cracks were formed in the bag surface layer, and fracture occurred inside the bag surface phase.

FIGS. 11 and 12 show the measurement results of the change in load for the display strips manufactured in Examples 2 and 3, respectively, and FIGS. 13 and 14 show the results in the case of using the display strips manufactured in Comparative Examples 2 and 3. Each is shown.

11 and 12 and FIGS. 13 and 14, the initial load is slightly higher in the case of the display strips manufactured in Comparative Examples 2 and 3, but cracks are formed from the surface layer of the bag to the inside of the surface layer of the bag. As a result, it was found that the load was greatly reduced. In FIGS. 13 and 14, after the load is greatly reduced, it rises again near the time of cutting. This is because the seal sample was continuously manufactured, and the measurement of the strength of the next sample has started. It just shows.

(Example 4)
A biaxially stretched polyethylene terephthalate film having a thickness of 50 μm was used as a base layer, and a printing layer, a polyethylene layer having a thickness of 30 μm, and a styrene-butadiene copolymer were used as a transparent sealant layer. The unstretched polypropylene films contained were laminated in this order, and the resulting laminate was slit to a width of 35 mm using a slitter to produce a display strip. FIG. 15 is a schematic diagram showing a cross section of the obtained display strip.

(Example 5)
A styrene-butadiene copolymer used in Example 4 having a thickness of 70 μm / m ² as a substrate layer, a polyethylene layer having a thickness of 30 μm thereon, and a transparent sealant layer having a thickness of 20 μm as a base layer. Are laminated in this order, and the obtained laminate is slit into a width of 35 mm using a slitter to produce a display strip. FIG. 16 is a schematic diagram showing a cross section of the obtained display strip.

(Example 6)
A 50 μm-thick biaxially stretched polyethylene terephthalate film was laminated with a 50 μm-thick cohesive failure type film having easy peelability (manufactured by Tocelo Co., Ltd., CMPS series 013C) using a normal dry lamination method. , And a display strip was prepared by slitting to a width of 35 mm.

(Example 7)
An extruded film (PB-1) composed of a propylene-ethylene copolymer, polyethylene and polybutene-1 on a biaxially oriented polyethylene terephthalate (PET) film having a thickness of 50 μm, and a low-density polyethylene usually used for extrusion sand lamination The (LDPE) film was extruded to obtain a laminate film of PET (50 μm) / LDPE (30 μm) / PB-1 (50 μm), and the obtained laminate film was slit to a width of 35 mm to produce a display strip.

(Example 8)
A 50 μm thick biaxially stretched polyethylene terephthalate (PET) film, a cohesive failure type VMX film having an easy peel property (XB15FT, manufactured by J-Film Co., Ltd.) and a low density polyethylene (LDPE) usually used for extrusion sand lamination. The film was extruded to obtain a laminate film of PET (50 μm) / LDPE (20 μm) / XB15FT (30 μm), and the obtained laminate film was slit to a width of 35 mm to produce a display strip.

(Example 9)
A 12 μm-thick biaxially stretched polyethylene terephthalate (PET) film is used as a base material, and a cohesive failure type film having easy peel properties (Aroma Film TP6 manufactured by Showa Denko Plastic Products Co., Ltd.) is used as a polyethylene film and an aluminum film using a tandem laminator. Extruded and laminated with a vapor-deposited biaxially stretched polyethylene terephthalate (VMAL-PET) film to obtain a five-layer film of PET (12 μm) / PE (12 μm) / VMAL-PET (12 μm) / PE (12 μm) / TP6 (35 μm). The resulting five-layer film was slit to a width of 35 mm to produce a display strip.

(Example 10)
Printing is performed on a biaxially stretched polypropylene film having a thickness of 30 μm. On the other hand, aluminum was vapor-deposited on one side of a cohesive failure type easy peel film (Aroma Film TPF-1 manufactured by Showa Denko Plastic Products Co., Ltd.) having a thickness of 40 μm. The obtained two film printing surfaces and the aluminum-deposited surface are combined and laminated by a normal dry lamination method to obtain a laminated film, and the obtained laminated film is slit into a 35 mm width to produce a display strip. did.

(Example 11)
On the printed surface of a biaxially stretched polyethylene terephthalate (PET) film having a thickness of 25 μm printed on one side, a cohesive failure type film having an easy peel property of aluminum vapor deposition on one side (Aroma, manufactured by Showa Denko Plastic Products Co., Ltd. The laminated film composed of PET (25 μm) / printed layer / EAA (15 μm) / VM-AlTPF-1 (40 μm) is obtained by extruding and laminating the film TPF-1) and the ethylene acrylic acid copolymer (EAA) film. The obtained laminated film was slit to a width of 35 mm to produce a display strip.

(Example 12)
A biaxially stretched polyethylene terephthalate film having a thickness of 50 μm is used as a base layer, and a low-density polyethylene layer having a thickness of 30 μm and a non-stretched polypropylene film having a cohesion failure type having a thickness of 40 μm are formed thereon as a sealant layer. A thickness comprising a resin composition containing 60% by weight of a single-site catalytic linear polyethylene, 20% by weight of a propylene homopolymer, and 20% by weight of a hydrogenated styrene-butadiene polymer having a styrene content of 67% by weight. A 32 μm thick support made of a resin composition containing an 8 μm adhesive layer, 40% by weight of a propylene-ethylene random copolymer having an ethylene content of 4.5% by weight, and 60% by weight of a linear polyethylene. Are laminated in this order, and this is slit to a width of 35 mm using a slitter. Thus, a display strip was manufactured.

(Example 13)
A 50 μm-thick biaxially oriented polypropylene film is used as a base layer, and a 30 μm-thick low-density polyethylene layer and a 20 μm-thick unstretched unpeelable polypropylene film having a thickness of 20 μm as a sealant layer (Nimura Chemical Industry Co., Ltd., trade name “FCMSO”) were laminated in this order, and this was slit to a width of 35 mm using a slitter to produce a display strip.

(Example 14)
Instead of the low-density polyethylene layer having a thickness of 30 μm, a non-sol bond (a mixture of product numbers XC-231 (main agent) and XA-126 (hardener) manufactured by Dainichi Seika Kogyo Co., Ltd. at a ratio of 10: 4) is used. A display strip was prepared in the same manner as in Example 4 except that 1.0 g / m ² was applied by dry lamination as an adhesive, and the base material layer and the sealant layer were bonded.

(Example 15)
In place of the low-density polyethylene layer having a thickness of 30 μm, 1.0 g / m ² was applied by dry lamination using an adhesive (trade name “Takerac A969V / Takenate A5” manufactured by Takeda Corporation) to form a base material layer. A display strip was produced in the same manner as in Example 4 except that the adhesive and the sealant layer were adhered.

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. FIG. 7 is a diagram illustrating a change in load applied when a bag connected to a display strip manufactured in Comparative Example 1 is removed. It is a figure showing the measurement result of the tensile strength performed about the surface layer of the bag used in the example. FIG. 9 is a diagram illustrating a change in load applied when a bag connected to a display strip manufactured in Example 2 is removed. FIG. 13 is a diagram illustrating a change in load applied when a bag connected to a display strip manufactured in Example 3 is removed. FIG. 10 is a diagram illustrating a change in load applied when a bag connected to a display strip manufactured in Comparative Example 2 is removed. FIG. 11 is a diagram illustrating a change in load applied when a bag connected to a display strip manufactured in Comparative Example 3 is removed. FIG. 9 is a schematic diagram illustrating a cross section of a display strip obtained in Example 4. FIG. 14 is a schematic diagram illustrating a cross section of a display strip obtained in Example 5.

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 8 Transparent sealant layer (unstretched polypropylene film containing styrene-butadiene copolymer)
9 Polyethylene layer 10 Printing layer 11 Base layer (biaxially stretched polyethylene terephthalate film)
12 paper

Claims (18)

A display strip for mounting and displaying a plurality of bags in which products are enclosed,
At least a base material layer, a sealant layer containing an easy-peelable resin composition comprising an adhesive component and a cohesive failure component,
The sealant layer and the surface of the bag can be bonded by heat sealing, and when the sealant layer and the surface of the bag bonded by heat sealing are separated, the sealant layer is broken. And display strip. A display strip for mounting and displaying a plurality of bags in which products are enclosed,
At least a base material layer, a sealant layer containing an easy-peelable resin composition comprising an adhesive component and a cohesive failure component,
The sealant layer and the surface of the bag can be bonded by heat sealing, and when the sealant layer and the surface of the bag bonded by heat sealing are peeled off, the sealant layer is broken, and When peeling the sealant layer and the surface of the bag, 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 is continuously or intermittently applied until peeling is completed. Display strip characterized by the need to continue. 3. The display strip according to claim 1, wherein the adhesive component is at least one selected from the group consisting of polypropylene, a copolymer of propylene and another olefin, and low-density polyethylene. The display strip according to claim 3, wherein the copolymer of propylene and another olefin is a copolymer of propylene and an α-olefin having 2 to 12 carbon atoms (excluding 3 carbon atoms). 5. The display strip according to claim 1, wherein the cohesive failure component is a styrene-based polymer and / or polybutene-1. 6. The display strip according to claim 1, wherein the sealant layer comprises an adhesive layer containing an easy-peeling resin composition and a support layer. 7. The display strip according to claim 6, wherein the support layer contains at least one of components constituting an adhesive layer. The display strip according to claim 6, wherein the support layer contains a cohesive failure component on the surface on the side of the adhesive layer. The display strip according to claim 8, wherein the cohesive failure component is a styrene-based polymer and / or polybutene-1. 10. The display strip according to claim 6, wherein the thickness of the adhesive layer is 1 to 30 μm and the thickness of the support layer is 5 to 50 μm. The display strip according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, wherein the sealant layer is formed on substantially the entire surface. The base material layer is made of at least one selected from the group consisting of biaxially oriented polypropylene, biaxially oriented polyethylene terephthalate, metal foil, and paper. 12. The display strip according to 9, 10, or 11. The display strip according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12, wherein the base material layer and the sealant layer are laminated with an adhesive. A layer comprising a polyethylene, an ethylene- (meth) acrylic acid copolymer or an ionomer of an ethylene- (meth) acrylic acid copolymer is further laminated between the base material layer and the sealant layer, The display strip according to 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or 13. The display strip according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, wherein a sealant layer is provided on a surface of the bag. The display strip according to claim 15, wherein the sealant layer is made of at least one selected from the group consisting of polypropylene, a copolymer of propylene and another olefin, and low-density polyethylene. 17. The display strip according to claim 15, wherein the sealant layer comprises a heat-sealable biaxially oriented polypropylene film. The display strip according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17, and a bag in which a product is enclosed is heat-sealed. Product display unit that is combined by

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