JP2004292043A - Simple tray and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for easily manufacturing trays having a simple structure, and the trays manufactured by this method. <P>SOLUTION: A strip film is folded in two, and an open end part and a folded part are bent inward, and formed in a semi-gusset shape and a gusset shape respectively. One or two heat-sealed parts are intermittently formed on the strip film formed in the semi-gusset shape and the gusset shape with a specified length therebetween so that the heat-sealed parts are perpendicular to a conveying direction. The strip film is cut in the heat-sealed part or between the two heat-sealed parts. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a simple tray suitable for storing meat, seafood, and the like sold in supermarkets, convenience stores, and the like, and a method for manufacturing the same. More specifically, the present invention relates to a thin flexible member, for example, a film-like sheet member The present invention relates to a simple tray that can be easily manufactured by using such a method and a method for manufacturing the same.
[0002]
[Prior art]
In supermarkets, convenience stores, and the like, styrene foam trays are frequently used to store and display products at stores. Since such trays are used when products are purchased in large quantities from producers and the like, and then subdivided for convenience to general consumers, they can be manufactured by the simplest method possible. It is desirable that the structure be simple. Styrofoam trays that have been widely used in the past have met such demands to some extent. However, plastic products are bulky during transportation and storage, and plastic products contribute to the destruction of the global environment, such as the generation of carbon dioxide and the accompanying global warming and generation of dioxins. There was a problem that the amount of use had to be suppressed as much as possible.
[0003]
It is not limited to a tray, and among the products into which the product is put when selling the product, both ends and a lower end of a thin flexible member such as a square or rectangular plastic film sheet laminated two sheets are generally used widely. A bag formed by being sealed can be mentioned. Various bags are provided on the basis of such a bag, and as a typical example, a bag provided with a gusset by bending both side edges of the bag inward (hereinafter referred to as a “gazette-type packaging”). It is described in the official gazette that a "bag body" is known (for example, see Patent Document 1). As a method of mass-producing these bags, mass production of bags is performed by intermittently heat-sealing a strip-shaped tubular film in a direction perpendicular to the transport direction and dividing the vicinity thereof. This is commonly done. Further, as a method of mass-producing a gusset-type packaging bag, a gusset is generally formed by bending both side edges of the tube inward during the transfer of the tube. I have.
[0004]
A bag body using the gusset fold at the bottom is also known. For example, a planting bag using the gusset fold at the bottom has been proposed (for example, see Patent Literature 2), and a manufacturing method thereof is disclosed in the specification. I have. The manufacturing method will be described with reference to FIG. 6. One pair of bags each having a sealant layer on one side and a non-sealant layer on the other side is used as a raw material and communicates with the inside. In order to form the bottom 32 made of 32 ′, small holes 34 (or cutouts 34 ′) are provided in advance near the corners 33 facing each other of the bag body 32 ′, and the bag is arranged so that the sealant layer is on the inner surface side. The bottom 32 is folded in a gusset form to form a quadruple structure having a W-shaped cross section. Then, by heat-sealing the three sides, the bag 32 is formed in a bag shape with an opening at the top, the bottom portion 32 is formed in a gusset shape, and the bag body 32 is formed through the small hole 4 (or the cutout portion 4 '). The sealant layers located on the outer wall of the bag 'are joined together, and only the vicinity of the corner 3 of the bag 32' facing each other is fixed in a spot shape. Next, the soil is filled into the inside through the upper opening, and the opening is heat-sealed to produce a final product.
[0005]
By the way, conventionally, when products are stored using styrofoam trays and displayed at a store such as a supermarket, the products are often piled up in a so-called pile. It is common to select and purchase products while checking the date. On the other hand, if consumers are left with relatively old freshness and / or date of manufacture at the store due to selection by consumers, old products are often sold at a discount after a certain time. It is common to select products and purchase them.
[0006]
[Patent Document 1]
Japanese Patent No. 2533038 (page 21, left column, lines 21 and 22)
[Patent Document 2]
JP-A-2002-325513
[Problems to be solved by the invention]
If the Styrofoam trays are sold and used in large numbers in the future, it will make it more difficult to solve environmental problems and accelerate environmental destruction. For this reason, research and development of environmentally friendly trays instead of styrofoam trays are necessary. On the other hand, such a tray is a temporary one used when products are divided into small pieces for the convenience of sale to general consumers, so the structure is simple, and the manufacturing method is as simple and large as possible. It must be able to be manufactured. In this regard, it is conceivable to form a bag such as the planting bag as a simple structure. However, in this manufacturing method, one or two sheets having a predetermined vertical and horizontal width serving as a planting bag are formed. Formed in advance, it is necessary to form a sealant layer on one side of both ends of the sheet and a non-sealant layer on the other side, which is troublesome and not suitable for mass production, and requires a new manufacturing apparatus for this. There is a problem of doing.
On the other hand, if products are stored using conventional styrofoam trays and stacked and displayed at supermarkets or other stores, it will be difficult for consumers to select products, and it will cause damage to products when selecting products. There is a problem of doing so.
[0008]
SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to mass-produce a bag body by intermittently cutting a band-shaped tubular film that has been frequently used in the direction orthogonal to the transport direction and in the vicinity thereof. An object of the present invention is to provide a method of manufacturing a tray having a simple structure by a simple method without requiring the purchase of a new manufacturing apparatus by applying the method.
[0009]
Another object of the present invention is to provide a tray having a simple structure manufactured by the simple manufacturing method.
[0010]
Still another object of the present invention is to provide a tray having a simple structure manufactured by the above-described simple manufacturing method, wherein the opening is provided with an opening / closing means.
[0011]
Further, another object of the present invention is to provide a tray having a simple structure manufactured by the above-described simple manufacturing method, by providing a locking hole so that the product can be hooked on the tray so that products can be suspended and displayed in the air. It is an object of the present invention to provide a tray that facilitates the selection of the products and reduces the damage to the products.
[Means for Solving the Problems]
[0012]
The above object can be achieved by the following means.
[0013]
That is, the invention according to claim 1 is a step of bending the open end portion and the bent portion of the half-folded band-shaped film inward to form a half gusset shape and a gusset shape, respectively. One or two heat-sealing portions are formed intermittently by a predetermined length of the belt-shaped film intermittently and perpendicular to the transport direction, and the heat-sealing portion or the two heat-sealing portions are formed on the heat-sealing portion. Cutting the band-shaped film in between.
[0014]
A second aspect of the present invention is a simple tray manufactured by the simple tray manufacturing method according to the first aspect, wherein the bottom of the simple tray has a gusset shape, and the reinforcing portion of the opening has a half gusset shape. It is characterized by the following.
[0015]
According to a third aspect of the present invention, in the simple tray according to the second aspect, a plurality of punched holes are provided in a reinforcing portion of the opening of the simple tray, and a predetermined side having an adhesive portion is provided so that the punched holes are covered. It is characterized by having an opening / closing means in which the reinforcing portions opposing each other through the punch holes are adhered / peeled by attaching a tape of a length.
[0016]
According to a fourth aspect of the present invention, there is provided the simple tray according to the second aspect, wherein the reinforcing portion of the opening portion which is heat-sealed and has one or more locking holes is provided, and the reinforcing portion is provided in the horizontal direction in the vicinity of the reinforcing portion. A plurality of punch holes are provided in the horizontal direction in the vicinity of the easy-opening means and the opening means, and a predetermined length of tape having an adhesive portion on the back side is attached so as to cover the punch holes. And an opening / closing means capable of adhering / peeling the reinforcing portions opposed to each other.
[0017]
[Action]
ADVANTAGE OF THE INVENTION According to this invention of Claim 1, the tray which has a simple structure can be simply and easily used without using the new apparatus which has a special function, and using a well-known gusset-type packaging bag manufacturing apparatus. Can be manufactured in large quantities.
Further, according to the second or third aspect of the present invention, the amount of plastic used can be reduced by several stages as compared with a styrofoam tray that has been frequently used in the past.
Furthermore, according to the third aspect of the present invention, since the opening and closing means are provided in the opening, it is possible to move freely in the store along with the change of the sales conditions with the product inserted, and Consumers will also be able to transfer them to other bags without changing them.
Furthermore, according to the invention as set forth in claim 4, since the product can be hung on the hook by the locking hole provided in the reinforcing portion, the product can be displayed in a state of being hung on the hook at the store, and the product can be sorted by the consumer. This makes it easier to avoid causing damage to the product at that time.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
(First Embodiment) FIG. 1 shows a band-shaped film sheet (hereinafter referred to as a "half-folded body 4") comprising a half-folded front film portion 1a and a back film portion 1b used in the manufacturing method of the present invention. It is an outline perspective view showing what formed gusset 4a and half gusset 4b (4b'4b '). That is, in the production method of the present invention, a known band-like film is employed, and the band-like film is not formed in a tube shape, in a transfer process, or after being half-folded in another step before the transfer, the band-like film is removed. It is transported from the wound roll in the longitudinal direction of the payout band. Note that, here, the “half gusset” generally means that when both side edges of the tubular sheet are bent inward, one ridge and two valleys are formed inward, and only two valleys are formed. It means a state in which one mountain is not formed.
[0020]
Next, in the transfer process in the longitudinal direction or in another process before the transfer, the open ends of the front film portion 1a and the back film portion 1b are formed on the left or right side edge of the half-fold member 4 Then, both side edges of the half-folded body 4 are bent inward by a known gusset forming method to form a gusset 4a and a half gusset 4b (4b'4b ') at the open end. As a method for forming the gusset 4a and the half gusset 4b (4b'4b '), a known gusset forming apparatus can be used. It is necessary that the heat sealing function can be stopped.
[0021]
FIG. 2 shows a half-folded body having a gusset 4a and a half gusset 4b (4b′4b ′) formed above (hereinafter referred to as a “gazette / half-gazette-equipped half-folded body 4 ′”), which is heated perpendicularly to the transfer direction. It is a top view showing the state where it was sealed. That is, the gusset / half gusset-equipped half-folded body 4 ′ is heat-sealed intermittently by a predetermined length X in the transfer process and perpendicular to the transfer direction. The heat seal forms two heat seal portions 8 adjacent to each other, and after heat seal or at the time of heat seal, a gusset / half gusset is provided on a cutting line 9 between the two heat seal portions by a known cutting method (not shown). Break the half-folded body 4 '. The number of heat seal portions may be one, but in this case, it is necessary to cut the gusset / half gusset-equipped half-folded body 4 ′ on the heat seal portion.
[0022]
(Second Embodiment) FIG. 3 is an external perspective view showing a bag body 14 according to a second embodiment of the present invention manufactured by the above manufacturing method. That is, the half gusset 4b (4b'4b ') formed by the manufacturing method is used as a reinforcing portion in an opening, the gusset 4a is used as a bottom, and the bag body 11 heat-sealed on both sides. Is formed. Further, the width of the reinforcing portion can be adjusted by adjusting the width of the half gusset 4b (4b ', 4b'). Further, the length of the bottom perpendicular to the longitudinal direction can be increased by twice the length of Y shown in FIG. 2, and the length of the bottom in the longitudinal direction can be increased by X.
[0023]
(Third Embodiment) FIG. 4 is an external perspective view showing a bag body 15 according to a third embodiment of the present invention manufactured by the above manufacturing method, and FIG. FIG. 4 (b) is a perspective view showing a state in which the openings are bonded to each other. That is, the bag body 15 has a plurality of punch holes 13 at predetermined positions in one (14b ′) of the reinforcing portions 14b formed in the opening of the bag body 15 having the same configuration as the bag body 11. By providing a tape 24 of a predetermined length having an adhesive portion on the back surface so as to cover the punched hole 13 on the reinforcing portion 14b ', the reinforcing portion 14b' and the reinforcement opposing the reinforcing portion 14b 'through the punched hole 13 are provided. An opening / closing means 14 adapted to allow the portion 14b '' to be bonded is provided. In this example, since the adhesive portion acts only for the punch hole 13, it is easy to peel off the reinforcing portions 14 b ′ and 14 b ″ and open the opening.
[0024]
(Fourth Embodiment) FIG. 5 is an external perspective view showing a bag 16 according to a fourth embodiment of the present invention manufactured by the above-described manufacturing method. FIG. FIG. 5 (b) is a perspective view showing a state in which the bag 16 is hooked on a hook by a locking hole. That is, the opening / closing means 14 is provided in the bag body 16 near the lower part of the reinforcing portion 19 on one side of the bag body 16 (the front film portion 1a or the back film portion 1b). The reinforcing portion 19 of the bag body 16 is heat-sealed and provided with one or more locking holes 17 so that it can be locked to a hook. Further, an easy-opening means 18 is provided between the reinforcing portion 19 and the opening / closing means 14. The easy-opening means 18 may be any known means as long as it can open the opening sealed by heat sealing. For example, both ends of the bold line portion of the easy-opening means 18 shown in FIG. A notch may be provided, and a rupture guide wire may be engraved on a thick line portion by heat sealing or the like. Further, since the bag 16 is provided with the locking hole 17 and the easy-opening means 18, it is desirable that the width of the band-shaped film is wider than the width of the band-shaped film when the bag 15 is formed.
[0025]
【The invention's effect】
As described above, according to the present invention, a tray having a simple structure can be easily and simply used without using a new apparatus having a special function and using a known apparatus for manufacturing a gusset-type bag for packaging. It can be manufactured in large quantities, and the amount of plastic used can be reduced by several steps. Further, according to the present invention, it is possible to not only easily put the goods in the tray, but also to easily move the goods while keeping the goods.
Furthermore, according to the present invention, since the product can be hung on the hook by the locking hole, the product can be hung and displayed at the time of displaying the product. You can avoid triggering.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a half folded body 4 used in a manufacturing method of the present invention, in which a gusset 4a and a half gusset 4b (4b′4b ′) are formed.
FIG. 2 is a plan view showing a state in which the gusset / half gusset-equipped half-folded body 4 ′ is heat-sealed in a direction perpendicular to the transfer direction.
FIG. 3 is an external perspective view showing a bag body 11 according to a second embodiment of the present invention.
FIG. 4 is an external perspective view showing a bag body 15 according to a third embodiment of the present invention, and FIG. 4 (a) is an explanatory perspective view showing a method of forming opening / closing means for the bag body 15, and FIG. () Is a perspective view showing a state where the opening is bonded.
FIG. 5 is an external perspective view showing a bag body 16 according to a fourth embodiment of the present invention, and FIG. 5 (a) is a perspective view for explaining a method of forming opening / closing means for the bag body 16; (B) is a perspective view showing a state where the bag body 16 is hooked on the hook by the locking hole.
FIG. 6 is an essential part perspective view for explaining a method for manufacturing a planting bag using a conventional gusset fold at the bottom.
[Explanation of symbols]
4 Half-Folded Body 4 ′ Gazette / Half-Folded Half-Gazette 4a Gazette 4b, 4b ′ Half-Gazette 1a Front Film 1b Back Film 8 Heat Seal 9 Cutting Line 13 Punch Holes 14b, 14b ′ 14b ″ Reinforcement 11 , 15, 16 Bag body 14 Opening / closing means X, Y Length 17 Locking hole 18 Easy opening means 19 Reinforcing part

Claims (4)

A step of bending the open end and the bent portion of the half-folded band-shaped film inward, respectively, to form a half gusset shape and a gusset shape,
One or two heat-sealing portions are formed intermittently by a predetermined length in the half gusset-shaped and gusset-shaped band-shaped films and perpendicular to the transport direction, and Cutting the strip film between the heat-sealed portions of the book,
A simple tray manufacturing method characterized by comprising: A simple tray manufactured by the simple tray manufacturing method according to claim 1, wherein a bottom portion of the simple tray has a gusset shape, and a reinforcing portion of the opening has a half gusset shape. . A plurality of punched holes are provided in the reinforcing portion of the opening of the simple tray, and a tape of a predetermined length consisting of an adhesive portion is adhered on the back side so as to cover the punched holes, so that the reinforcing portion opposed through the punched holes is provided. The simple tray according to claim 2, further comprising an opening / closing means that allows the two to be bonded and separated from each other. A heat-sealed and reinforced portion of the opening provided with one or more locking holes, an easy-opening means provided in the horizontal direction near the reinforcing portion, and a plurality of A punch hole is provided, and a tape of a predetermined length made of an adhesive portion is adhered on the back side so that the punch hole is covered, and an opening / closing means capable of adhering and peeling off reinforcing portions opposed to each other through the punch hole. The simple tray according to claim 2, wherein the tray is provided.

Images