JP2011102134A - Merchandise display body, and device and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a merchandise display body in which a bag is easy to remove from a tape. <P>SOLUTION: (1) The merchandise display body is provided. An adhered face of the bag and the tape, which is formed by heat sealing, has a stripe pattern where an adhered part and a non-adhered part are alternately formed, and the boundary lines of the stripe pattern are inclined by an angle within a range of 15° to 75° with respect to the width direction of the heat sealed tape. (2) A strip bag device for manufacturing the merchandise display body in which the heat sealed face of a heater has a concave-convex form to have the stripe pattern and the boundary lines between the concave surface and the convex surface are inclined by the angle within the range is provided. In addition, (3) a method for manufacturing the merchandise display body is provided, in which the heat sealed face having the boundary lines with the inclining angle selected within the range between the concave surface and the convex surface is used so that an exfoliating strength when the bag is exfoliated from the tape is within a predetermined range. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides a product display body in which a plurality of the bags are attached to a belt-like tape in a suspended form in order to display and sell plastic film bags enclosing food or the like in supermarkets, retail stores, etc., The present invention relates to a strip bag device for manufacturing a product display body and a method for manufacturing a product display body by attaching a bag to a tape using this device.

  As a method to display and sell bags filled with food, etc., by efficiently using the space in the store, a plurality of bags are mounted side by side on a strip of tape and displayed in a suspended state. The method of removing and purchasing is done. In order to carry out this sales method, a belt-like tape is supplied to the heater, and the food-packed bag is gripped, and the bag is attached to the tape by heat sealing while a predetermined portion of the bag is stacked on the tape on the heater surface. Strip bag devices for this purpose are already known (patent documents 1 to 3).

  Bags attached to tape using this method need to remain suspended until they are exhibited and sold at a store and purchased by a consumer. At the time, it is also required that the bag must be easy to remove from the tape. Proposals of tapes that can meet these two requirements have been made (Patent Documents 4 and 5).

Japanese Patent No. 3578348 Japanese Patent No. 3602527 JP 2008-105701 A Japanese Patent No. 4018053 Japanese Patent No. 4043471

  When a bag is attached to the tape using a strip bag device at each site, the bag strongly adheres to the tape due to various fluctuation factors, such as the properties of the plastic film bag surface layer to be attached, It was found that there was a need to make it easier to remove the bag from the tape, as the bag could be damaged during removal or the hole punch on the top of the tape for hanging could tear.

  In consideration of such a situation, the present invention provides a product display body in which a bag is attached to a tape so that it can be easily removed, a strip back device for manufacturing such a product display body, and a bag tape using the strip back device. It is an object of the present invention to provide a method for attaching to a machine.

  As a result of intensive studies on the above problems, the present inventors provide the following product display body, strip bag device, and method for manufacturing the product display body.

(1) In a product display body in which a bag enclosing a product is heat-sealed by a tape having a belt-like shape with a predetermined width,
The adhesive surface between the bag and the tape formed by heat sealing is configured in a striped pattern in which adhesive portions and non-adhesive portions are alternately formed, and the border line of the striped pattern is the same as that of the heat-sealed tape. A product exhibit characterized by being inclined at an angle in the range of 15 ° to 75 ° with respect to the width direction.

(2) A strip bag device for manufacturing a product display body in which a bag in which a product is encapsulated in a tape having a strip shape with a predetermined width is attached by heat sealing, the device having a heat sealing surface In the strip bag apparatus, comprising a pressing body having a pressing surface for pressing the tape and the bag on the heat seal surface, and a mechanism for moving up and down the pressing body,
The heat seal surface has a concavo-convex shape so as to constitute a striped pattern in which heat seal portions and non-heat seal portions are alternately formed, and the boundary line between the concave surface and the convex surface is the width direction of the tape. The strip bag device is inclined at an angle in the range of 15 ° to 75 °.

(3) Using the above strip bag device, while feeding the tape onto the heat seal surface heated to a predetermined temperature, place a predetermined portion of the bag on the tape and press it from above with the pressing surface of the pressing body. In a method of manufacturing a product display by attaching a bag to a tape by heat sealing,
The inclination angle of the boundary line between the concave surface and the convex surface with respect to the width direction of the tape is selected from the range of 15 ° to 75 ° so that the peel strength when peeling the bag from the tape falls within a predetermined range. A method for manufacturing a product display body, wherein heat sealing is performed using a heat sealing surface having an inclination angle at which a boundary line between the concave surface and the convex surface is selected.

  In the strip tape, the tape is removed between a base material layer that gives strength performance to the tape, a sealant layer having heat sealability for attaching a bag, and the base material layer and the sealant layer. It is preferable to provide an adhesive layer that allows the bag to be reattached.

  In the strip bag device, the ratio (A / A + B) of the area of the heat seal surface to the total of the area (A) of the heat seal surface and the area (B) of the non-heat seal surface is in the range of 40% to 80%. It is preferable that it exists in.

  In the method for manufacturing a product display body, the peel strength is preferably a value obtained from a peak of a stress strain curve measured while peeling a bag from a tape.

  According to the present invention, the bonding surface formed by heat sealing of the product display body is configured in a striped pattern in which the bonding portion and the non-bonding portion are alternately formed, and the boundary line of the striped pattern is a heat seal. The tape is inclined at an angle in the range of 15 ° to 75 ° with respect to the width direction of the tape. When detaching while pulling the bag downward from the tape, peeling progresses from the top to the bottom of the adhesive surface, but the border line of the striped pattern is inclined at a predetermined angle to divide the adhesive surface. Since the force for removing the bag is dispersed without acting in one direction, the bag can be removed with a lower force. In this case, by further selecting the ratio of the bonded area to the non-bonded area, and the overall size of the bonded surface, the initial stress when grasping and removing the bag is reduced while maintaining a predetermined bonding force. Can be removed easily.

  According to the present invention, the heat seal surface of the heater of the strip bag device has a concavo-convex shape so as to form a striped pattern in which the heat seal portion and the non-heat seal portion are alternately formed. The boundary between the tape and the tape is inclined within a range of 15 ° to 75 ° with respect to the width direction, and the adhesive surface formed between the tape and the bag is also inclined corresponding to this shape. A pattern is formed, which reduces the stress required for removal when the bag is removed, improving the ease of removal.

  According to the present invention, the heat seal surface is formed in a striped pattern in which heat seal portions and non-heat seal portions are alternately formed, and the boundary line of the stripe pattern is 15 ° to the width direction of the tape. By attaching the bag to the tape using a heater inclined within a range of 75 °, the angle between the tape and the bag can be adjusted to have a desired peel strength by selecting the inclination angle. Therefore, it is possible to obtain a product display body having a desired peel strength by preparing a heat sealing surface of various dimensions and selecting from among them.

It is explanatory drawing which shows an example of the strip bag which attached the bag to the tape, and a tape. It is a side view which shows one example of a strip bag apparatus. It is an enlarged side view which shows the heater and press body periphery of the apparatus of FIG. It is a side view which shows another example of a strip bag apparatus. It is an enlarged side view which shows the heater and press body periphery of the apparatus of FIG. It is a perspective view of the heater of a strip bag apparatus. It is a perspective view which shows one example of the heat seal surface used for the strip bag apparatus of this invention. It is a perspective view which shows one example of the heat seal surface used for the strip bag apparatus of this invention. It is explanatory drawing which shows the adhesion surface of the bag and tape in the goods display body of this invention. It is a figure which shows one example (comparative example) of the stress strain curve when peeling a bag from a tape. It is a figure which shows one example (Example 1) of the stress strain curve when peeling a bag from the display body of this invention. It is a figure which shows another example (Example 2) of a stress strain curve when peeling a bag from the display body of this invention.

(Product exhibit)
The tape T used in the present invention has a belt-like shape as shown in FIG. 1 (b), a hole punch 2 for suspension is formed on the upper portion, and the upper end portion of the bag (upper side of the bag) is formed on the tape body portion 1. A seal portion 3 is attached, and a plurality of bags B are suspended to form a product display body A. In the present invention, the product display body A refers to a product in which a plurality of bags B are attached by heat sealing so as to be suspended and displayed on a tape T having a heat-sealable belt-like shape having a predetermined width. As a more specific embodiment, (b) an embodiment in which the upper end of the back side of the bag is heat sealed to the tape, (b) the upper end region 3 on the front side of the bag enclosing the product is heat sealed to the tape, The aspect currently formed so that a bag may be hung and displayed in the state folded so that the surface side might be displayed is mentioned. 1A to 1C show the latter embodiment, and FIG. 1A shows a state in which a bag B is attached to a tape T in a strip bag device. The upper end portion 3 of the bag is attached to the tape T with the tape T and the surface side of the bag B facing each other. Therefore, the back side of bag B is visible in FIG. After attaching the bag B to the tape T, the top and bottom of the tape T are turned upside down and folded at the upper end 3 of the bag as shown in FIG. 1 (c) so that the front side of the bag can be seen. [FIG. 1 (b)]. In this state, bags are displayed at the store.

(tape)
The tape has a laminated structure composed of at least two layers of a base material layer that gives mechanical strength to the tape and a sealant layer that gives heat sealability to the tape. The base material layer is usually formed of a material such as a plastic film having a thickness of 10 to 60 μm, paper, cloth, non-woven fabric, metal foil, etc., preferably a plastic film. As the plastic film, a film such as polyethylene terephthalate, polypropylene or polyamide, particularly a biaxially stretched film is usually used. The sealant layer usually has a thickness of 10 to 80 μm, and as a material for the sealant layer, a low-melting-point heat-sealable film (low density polyethylene, ethylene vinyl acetate resin, easy peel film, etc.) is used. The base material layer film and the sealant layer film are laminated and cut into a predetermined width to form a tape. Usually, the tape has a width of 20 to 50 mm, preferably 35 mm, and a bag having a width of 15 to 30 cm and a length of 10 to 50 cm, in which a product is normally enclosed, is suspended by the tape of this width. It has been.

  A tape having a three-layer structure in which a pressure-sensitive adhesive layer is formed by applying a pressure-sensitive adhesive to the base material layer film and the sealant layer is formed on the pressure-sensitive adhesive layer may be used. In this case, when the bag is removed from the tape, peeling occurs between the sealant layer and the adhesive layer, and the tape sealant layer is moved to the bag side so that the tape adhesive layer is exposed. The removed bag can be glued again. As the pressure-sensitive adhesive layer, generally known pressure-sensitive adhesives having adhesiveness at room temperature such as natural rubber-based and acrylic pressure-sensitive adhesives can be used. The thickness of the pressure-sensitive adhesive layer formed on the base material layer film is usually 20 to 80 μm. An anchor coat process is performed on the base material layer film, an adhesive layer is formed thereon, and a sealant layer having heat sealability is further formed thereon. In order to make it easy to remove the bag from the commodity display body to which the bag is attached, it is preferable to provide a silicone release agent layer between the sealant layer and the pressure-sensitive adhesive layer. Further, the sealant layer film is preferably provided with slits at a predetermined interval across the entire width of the tape perpendicular to the tape length direction, for example, 1 to 20 mm (preferably 2 to 5 mm) (see Patent Document 5). FIG. 1D is an explanatory view showing the appearance of a tape having an adhesive layer. In the sealant layer 4 of the tape 1, slits 5 are formed at predetermined intervals. In particular, the adhesive surface of the inclined striped pattern according to the present invention is peeled along the slit formed in the sealant layer of the tape between the sealant layer and the adhesive layer of the tape when the bag is removed from the product display body. It is effective to occur and expose the adhesive layer.

(Outline of strip bag device)
An outline of one embodiment of a strip bag device for attaching a bag to a tape is shown in FIG.
FIG. 2 shows an apparatus 20 for gripping and attaching a bag filled with food or the like discharged from the bag making and packaging machine 21 to a tape. In this case, the bag making and packaging machine 21 and the strip bag device 20 are interlocked, and the bags B discharged from the bag making and packaging machine are sequentially sent to the strip bag device 20 and attached to the tape T. Is called. However, the strip bag device 20 does not need to be interlocked with the bag making and packaging machine 21 and may be attached to the tape while taking out the bag from the box for storing the bag.

  In FIG. 2, the tape T is unwound from a roll (not shown) and transferred while being guided by a plurality of drive rollers 24. As the drive motor 23 for feeding out the tape, a servo motor is used, and the feed amount is controlled by a control device. A work unit 25 is disposed in the tape transfer path. The work unit 25 includes a printer that prints various types of information on the tape (information on the tape, information for promoting the sale of bags as merchandise, etc.), and a perforation (continuously manufactured strip tape T on the tape). A cutter for inserting a perforation for separation, etc., and a punch for making a punch hole (a hole for hanging a strip bag at a store) in the tape are incorporated.

  In the upper part of FIG. 2, a transverse sealing jaw 26 of the packaging machine is shown. When the upper end portion of the bag is sealed by the lateral sealing jaw 26, the gripping member 27 of the bag moving mechanism moves upward to grip both upper side surfaces of the bag B, and the upper end of the bag is connected to the lateral sealing jaw 26. It is cut and separated by the attached cutter. The bag gripped by the gripping member 27 moves downward in the direction of the heater 28 of the strip bag device. When the upper end region of the bag B (usually the seal portion at the upper end of the bag) is placed at a predetermined position of the tape T on the heater surface, the gripping member 27 releases the bag B and moves upward to move the next bag. Hold it.

  As shown in FIG. 2, the strip bag device 20 includes a heater 28 for attaching a predetermined portion of the bag B to the tape T by heat sealing, a pressing body 29 for pressing the contact surface between the tape T and the bag B from above, A mechanism (not shown) for reciprocating the pressing body 29 up and down is provided. Further, the tape supply unit 22 for feeding the tape T to the heater 28, in order to overlap a predetermined portion of the bag on the tape on the heater surface, hold the bag from the holding position near the bag making and packaging machine to the release position near the heater. A gripping member 27 to be moved and a moving mechanism 271 for moving the gripping member are provided.

  FIG. 3 shows the pressing body 29 and the heater 28 in an enlarged manner. When the bag is not placed on the heater surface 28, the tip end portion 29 a of the pressing body 29 is in a state of being separated from the heater 28. When a predetermined portion of the bag B gripped by the gripping member is overlaid on the tape T on the heater surface 28, the pressing body cylinder is actuated and the tip portion 29a of the pressing body 29 moves in the direction C for pressing the heater surface 28. Thus, the tape and a certain portion of the bag (usually, the upper end portion of the bag) are sandwiched between the distal end portion 29a of the pressing body 29 and the heater 28. In this state, the contact surface between the bag and the tape is heated, welding occurs between the sealant layer of the tape and the surface layer of the bag, and the bag is attached to the tape. When the welding is completed, the cylinder is operated, and the tip end portion 29 a of the pressing body 29 is separated from the heater 28.

FIG. 4 shows another example of the strip bag device. The strip bag device 41 is not linked to the bag making and packaging machine, and the bag B filled with the product supplied from the supply conveyor 43 is introduced into the strip bag device 41 by the introduction conveyor 44, and the introduction conveyor 44 The end of the bag B introduced by the introduction conveyor 44 is gripped by the gripping unit 48, moved to the affixing position, and this bag is attached to the tape.

  FIG. 5 is an enlarged side view showing the periphery of the heater 51 and the pressing body 52 constituting the strip bag device 41 in an enlarged manner. As shown in this figure, the strip bag device 41 includes a heater 51, a pressing body 52 that sandwiches the tape T between the heater 51 and the air cylinder, and an air cylinder for moving the pressing body 52 up and down. 53 and a punch / cutter unit 54 for appropriately punching holes or perforations in the tape. The heater 51 has a heat seal surface, and the tape T and the bag B are pressure-bonded between the seal surface and the pressing body surface of the pressing body 52 to form a heat seal.

(heater)
As shown in FIG. 6, the heater 60 includes a heat seal surface 61, a heater base 62 for attaching the heat seal surface 61, and a heating mechanism 63 for heating the heat seal surface 61 to a predetermined temperature. In the heater, the heat seal surface 61 has a rectangular planar shape without unevenness. The width of the heat seal surface 61 is a width corresponding to the width of the tape. When the tape width is 20 to 50 mm, the width is usually slightly smaller than that, but the adhesive force between the tape and the bag. If is too strong, the width may be further reduced. Moreover, although the length of the advancing direction of a tape is about 5-30 mm, it is suitably selected by the adhesive force of a tape and a bag. The upper end region of the central portion of the bag, preferably, the upper end seal portion and the tape are heat sealed to suspend the bag.

(Heat seal surface)
In the present invention, the heat seal surface is usually rectangular, but it may have an arbitrary polygonal shape such as a trapezoid or a hexagonal shape in which a trapezoid and a rectangle are combined. In the present invention, the polygonal corners do not have to be geometrically accurate corners, and may be rounded. Although the conventional heat seal surface is formed by one plane having a predetermined length and width, according to the present invention, the heat seal surface is a stripe in which heat seal portions and non-heat seal portions are alternately formed. It has a concavo-convex shape so as to constitute a pattern, and the boundary line between the concave surface and the convex surface is in the range of 15 ° to 75 °, preferably 20 ° to 70 °, more preferably, with respect to the tape width direction. The peel strength can be adjusted by adjusting the inclination angle. When the inclination is smaller than 15 °, the adhesive force between the tape and the bag is too strong, and it becomes difficult to easily remove the bag from the tape. Further, when the inclination angle exceeds 75 °, the bag can be removed from the tape with a small force, but on the other hand, the adhesive force becomes weak, and it becomes difficult for the tape to stably hold and display the bag. By selecting the angle of inclination within the above range, the adhesive surface between the tape and the bag can be easily peeled off when the consumer removes the bag from the tape, and the peel strength can be increased even if peeling is further advanced. The bag can be easily removed.

  Furthermore, the ratio (A / A + B) of the area (A) of the heat seal surface and the area (B) of the non-heat seal surface should be in the range of 40% to 80% (preferably 45% to 75%). Thus, the bag is stably bonded to the tape. FIG. 7A shows a heat seal surface with an inclination angle of 30 ° and an A / A + B ratio of 60%, and FIG. 7B shows a heat seal surface with an inclination angle of 60 ° and an A / A + B ratio of 60%. It is shown. This heat seal surface is attached to the heater in place of the conventional heat seal surface (a rectangular body having a concavo-convex structure) shown in FIG. An uneven heat seal surface can be manufactured by forming a groove having a predetermined width and a predetermined depth on a flat plate. The width of the convex portion is 1 to 4 mm, and the width of the concave portion (groove) is preferably within the range of 0.4 to 1.6. The depth of the groove is selected within the range of 0.1 to 0.4 mm, and the shape of the groove may be square or curved. However, it is easier to control the temperature of the heater surface if the groove is shallowly curved. It may be. If the groove is too shallow, heat from the groove may affect the adhesion between the tape and the bag, which is not preferable. If the groove is too deep, it may cause an effect of lowering the heater surface temperature on the convex surface. A plurality of convex portions and concave portions are formed on the heat seal surface, but the size of the plurality of convex portions and concave portions may not be the same in one heat seal surface.

  The tape is placed on the heat seal surface shown in FIGS. 7A and 7B, and the upper end region on the surface side of the bag is superimposed thereon, and heat sealing is performed by pressing the pressing body. After a predetermined number of bags are attached to the tape, the tape is cut to form one product display body. When the product display body is displayed at a store, as shown in FIG. 1, the product display body is turned upside down and displayed with the front side of the bag facing the surface.

(Adhesive surface of tape and bag)
When heat sealing is performed using the above heat sealing surface, the adhesive surface between the heat-sealed bag and the tape forms an adhesive surface having a shape corresponding to the shape of the heat sealing surface. According to the present invention, the shape of the heat seal surface is an uneven shape that forms a striped pattern in which heat seal portions and non-heat seal portions are alternately formed. The adhesive surface between the bag and the tape thus formed is also an adhesive surface having an inclined striped pattern.
The shape of the adhesive surface when heat sealing is performed using a heat sealing surface having a striped pattern inclined by 30 ° is shown in FIG. When the consumer removes the bag, since the adhesive surface is partially bonded and inclined, it is possible to reduce the initial peel strength at which peeling begins, and for excessive bonding, The situation where peeling between the bag and the tape does not proceed and the bag is broken can be avoided. The inclination angle of the borderline of the striped pattern is in the range of 15 ° to 75 °, preferably in the range of 20 ° to 70 °, and more preferably in the range of 25 to 65 °. . Further, in the process of display and sale after the bag is attached to the tape, the bag needs to be held on the tape, and for that purpose, a predetermined adhesive force is required. By adjusting the ratio, the area (width and height) of the adhesion surface, etc., it can be achieved by ensuring the area of the predetermined adhesion surface (heat seal surface). The height of the adhesive surface (heat seal surface) is preferably selected from the range of 5 to 30 mm, and the width of the adhesive surface is suitably selected from the range of 15 to 35 mm when the width of the tape is 35 mm. In particular, as shown in the examples below, the angle of the boundary line of the striped pattern is set so that the peak value of the peel strength (stress) -distance (strain) curve is not more than a predetermined peel strength value. Adjusting is effective in suppressing excessive adhesion that can lead to bag breakage.

  The shape of the adhesive surface when heat sealing is performed using a heat sealing surface in which the heat sealing portion and the non-heat sealing portion are formed in a striped pattern is shown in FIG. The state where the front side upper end 82 of the bag B is attached to the tape T by heat sealing and the suspended state is viewed from the rear side is shown. The front side upper end portion 82 of the bag is bent by being suspended (see FIG. 1C). Even when a bag is attached by heat sealing using a transparent tape, the shape of the adhesive surface can be confirmed by visual observation. In the embodiment shown in FIG. 8, a striped pattern adhesive surface 81 is formed. Since the seal portion 82 at the upper end of the bag is formed with the unevenness 83 parallel to the width direction, heat sealing is performed between the tape and the convex surface of the bag upper end seal portion.

  Heat sealing is performed at the upper end portion of the bag, preferably at the upper end sealing portion of the bag. Since the seal in the width direction above and below the bag (horizontal seal) is usually performed using a pair of horizontal seal jaws of the packaging machine in which a plurality of irregularities are formed in parallel to the width direction, A plurality of concavo-convex shapes are formed in the seal portion in parallel in the width direction. When tape and heat sealing are performed on this portion, the tape is heat sealed on the convex surface of the sealing portion at the upper end of the bag, and heat sealing with the tape is difficult to be performed on the concave surface of the sealing portion on the upper end of the bag. When bonding the bag and the tape by heat sealing, it is necessary to select the shape and area of the heat sealing surface while taking into account the uneven shape of the upper end of the bag.

  In particular, the adhesive surface of the inclined striped pattern according to the present invention is provided with a pressure-sensitive adhesive layer between the base material layer and the sealant layer, and a release agent layer between the pressure-sensitive adhesive layer and the sealant layer. It is particularly effective when it is formed between a tape and a bag in which slits are provided at predetermined intervals on the surface of the layer. When removing a bag from such a tape, in the first stage, (b) the destruction of the sealant layer starts from the slit portion formed in the sealant layer of the tape, and then (b) the destruction of the sealant layer, When the release of the sealant layer from the release agent layer between the pressure-sensitive adhesive layer and breakage proceeds, and finally (c) the release reaches the lower slit, the bag is removed. The adhesive force between the bag and the tape at the stage of (a) and (c) can be selected by selecting the seal width of the tape, etc. It can be adjusted. The stage (b) constitutes a substantial part of peeling when the bag is removed because the destruction of the sealant layer and the peeling of the sealant layer from the release agent layer are added. Due to the striped pattern adhesive surface, the downward pulling force is dispersed, and the bag can be removed without excessively increasing the peel strength. This exposes the surface of the predetermined pressure-sensitive adhesive layer, so that the bag can be reattached. Note that the bag attached to the tape is easy to remove, and the bag must be stably held on the tape until it is removed. For this purpose, since a predetermined bonding surface area is required, it is necessary to select the bonding surface area in consideration of the bag holding force of the tape and the ease of removing the bag.

(Measurement method of peel strength)
The adhesive strength between the bag and the tape was measured as follows.
Cut the tape with the bag attached to 15mm width, grip the bag side and the tape side, pull at a speed of 300mm / min, measure the stress strain curve while peeling 90 °, This is shown in FIGS. 9, 10A and 10B. In the figure, the vertical axis represents intensity (N) and the horizontal axis represents distance (mm). FIG. 9 is a defective example (comparative example), and FIGS. 10A and 10B are preferred examples (examples).

(tape)
A biaxially stretched polyethylene terephthalate film (thickness: 50 μm) coated with a natural rubber adhesive (thickness: 50 μm) on one side and a low-density polyethylene film (thickness: 30 μm) coated with a silicone release agent on one side The biaxial polyethylene terephthalate film and the low-density polyethylene film are laminated so that the silicone release agent is disposed on the adhesive layer, and only the polyethylene film layer has slits in the width direction at intervals of 3 mm in the length direction. The laminated film was cut into a width of 35 mm to obtain a tape.

(Heat seal surface of strip bag device)
Heat sealing was performed using the following three types of heat sealing surfaces. In the test (a) (comparative example), a heat seal surface having a rectangular stripe pattern having a width of 20 mm and a height of 10 mm was used. In test (b) (Example 1), a heat seal surface having a width of 20 mm, a height of 10 mm, a heat-sealed surface and a non-heat-sealed surface constitute a striped pattern, and the stripe-shaped pattern boundary has an inclination angle of 30 °. Used (see FIG. 7A). Test (c) (Example 2) A heat seal surface having a width of 20 mm, a height of 10 mm, and an inclination angle of a striped pattern boundary line of 60 ° was used (see FIG. 7B).

(Installation on bag tape)
The tape and the surface side of the bag having a width of 15 cm and a length of 20 cm were faced to each other, and the central portion of the upper end portion on the bag surface side was attached to the tape by heat sealing. The heat seal conditions were 185 ° C. and 300 msec for all of test (a), test (b), and test (c). After heat sealing, the bag attached to the tape was inverted so that the surface of the bag was visible.

(Peel strength measurement results)
In the example of FIG. 9 (comparative example), the peak value P of the peel strength in the measured stress strain curve exceeds 25 N, and the bag-tape adhesive force is too strong. Damaged or the hole punch on the top of the tape was destroyed.
In both the example of FIG. 10A (Example 1) and the example of FIG. 10B (Example 2), the peak value P of the peel strength in the measured stress strain curve is around 10N. When removing the bag, the bag could be removed without breaking the bag or tearing the hole punch on the top of the tape. In this example, the adhesive surface of the tape and the bag has a striped shape with an inclination angle of 30 ° or 60 °, and when the bag is removed, the adhesive surface is inclined, so that the peeling proceeds with an appropriate peeling strength. Therefore, it has the feature that removal is easy.

  The product display body of the present invention, the strip bag device for manufacturing the product display body, and the method for manufacturing the product display body using the device can be used in establishments where a packaging bag for food or the like is attached to a tape. The attached strip bag (tape attached with a bag) is widely used for display and sales in supermarkets, convenience stores, retail stores, and other stores, and therefore has high industrial applicability.

DESCRIPTION OF SYMBOLS 1 Tape main-body part 2 Hole punch 3 Bag upper end part 4 Sealant layer 5 Slit 20 Strip bag apparatus 21 Bag making packaging machine 22 Tape supply part 23 Drive motor 24 Drive roller 25 Work unit 26 Seal jaw 27 Holding member 271 Moving mechanism 28 Heater
29 Press body 29a Press body tip 41 Strip bag device 42 Grasp unit 43 Supply conveyor 44 Introduction conveyor 45 Drop conveyor 51 Heater 52 Press body 53 Air cylinder 54 Punch / cutter unit 60 Heater 61 Heat seal surface 62 Mounting base 63 Heating mechanism 70 Heat seal surface 71 Lower side 72 Upper side 81 Adhesive surface 82 Bag upper end seal portion 83 Concavity and convexity formed on the bag upper end seal portion B Product display B Bag C Direction D Tape movement direction T Tape P Peak

Claims (7)

In the product display body in which the bag enclosing the product is heat-sealed with a tape having a belt-like shape with a predetermined width,
The adhesive surface between the bag and the tape formed by heat sealing is configured in a striped pattern in which adhesive portions and non-adhesive portions are alternately formed, and the border line of the striped pattern is the same as that of the heat-sealed tape. A product exhibit characterized by being inclined at an angle in the range of 15 ° to 75 ° with respect to the width direction.   2. The tape according to claim 1, wherein the tape is removed between a base material layer that gives strength performance to the tape, a sealant layer having heat sealability for attaching a bag, and the base material layer and the sealant layer. A product exhibit with an adhesive layer that allows the bag to be reattached. A strip bag device for manufacturing a product display body in which a bag in which a product is encapsulated in a tape having a belt-like shape with a predetermined width is attached by heat sealing, the device comprising a heater having a heat sealing surface, and heat sealing In a strip bag device comprising a pressing body having a pressing surface for pressing a tape and a bag on the surface, and a mechanism for moving the pressing body up and down,
The heat seal surface has a concavo-convex shape so as to constitute a striped pattern in which heat seal portions and non-heat seal portions are alternately formed, and the boundary line between the concave surface and the convex surface is the width direction of the tape. The strip bag device is inclined at an angle in the range of 15 ° to 75 °.   In Claim 3, The ratio (A / A + B) of the area of a heat seal surface with respect to the sum total of the area (A) of a heat seal surface and the area (B) of a non-heat seal surface is in the range of 40%-80%. A strip bag device. Using the strip bag device according to claim 3, while feeding the tape onto the heat seal surface heated to a predetermined temperature, a predetermined portion of the bag is placed on the tape and pressed from above with the pressing surface of the pressing body. In a method of manufacturing a product display body by attaching a bag to a tape by heat sealing,
The inclination angle of the boundary line between the concave surface and the convex surface with respect to the width direction of the tape is selected from the range of 15 ° to 75 ° so that the peel strength when peeling the bag from the tape falls within a predetermined range. A method for manufacturing a product display body, wherein heat sealing is performed using a heat sealing surface having an inclination angle at which a boundary line between the concave surface and the convex surface is selected.   6. The heat seal surface according to claim 5, wherein the peel strength when the bag is peeled from the tape falls within a predetermined range, with respect to the sum of the area (A) of the heat seal surface and the area (B) of the non-heat seal surface. The area ratio (A / A + B) of the manufacturing method of the goods display body which heat-seals using the heat-seal surface selected from the range of 40%-80%.   6. The method for manufacturing a product display body according to claim 5, wherein the peel strength is a value obtained from a peak of a stress strain curve measured while peeling the bag from the tape.

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