JP2002068210A - Packaging bag, packaged article, and method for closing opening of packaging bag and holding the closed state - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transparent packaging bag having a very shallow bottom shape substitutable for a tray and capable of being held with hand, a packaged article which is made by containing an article to be packaged in the packaging bag and which exhibits a favorable state in display, and a method for closing an opening of the packaging bag and holding this closed state, wherein after containing the article in the packaging bag, the self-hold of a state that the opening is tightly closed is maintained and heat seal can be favorably performed by a bar-like heat sealer. SOLUTION: The packaging bag comprises one sheet of a bottom face portion 1 and two sheets of side face portions 2, 3. The bottom face portion 1 having hexagon in a developed shape shows an inverted equal leg trapezoid crest-folded in two along the longest diagonal line when the bag is in a flat state. The two sheets of the side face portions 2, 3 sandwiching therebetween the two-folded inverted equal leg trapezoidal bottom face portion have edging ribs 4 and also have relative sizes to be opened into a substantially cubic shape. After an article to be packaged is contained in the packaging bag, upper parts of upper halves of the two sheets of the side face portions 2, 3, which close an opening of the packaging bag by pulling vertical ribs 5, 5 provided on both sides, are heat-sealed to each other. The heat- sealed portion at the opening is tilted to one side, and labels 8, 9 are stuck on the tilted upper face side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent packaging bag which can be held in an ultra-shallow floor shape and can be used as a substitute for a styrofoam dish, and a packaged product which accommodates an object to be packaged and exhibits a desirable form in display. The present invention relates to a method of closing and holding an opening of a packaging bag, in which after the object to be packaged is accommodated in the packaging bag, the state in which the opening is in close contact with the packaging bag is self-maintained, and heat sealing with a rod-shaped heat sealer can be performed well.

[0002]

2. Description of the Related Art Styrofoam dishes are used for serving sashimi, fresh fish, grilled fish, meat, prepared foods, Chinese foods such as dumplings and dumplings, as well as foods such as vegetables, fruits and dried foods. With the development of a packaging system that uses the adhesive properties of stretch films,
In any of the automatic types, packaging that looks fresh with little liquid leakage can be easily performed. On the other hand, in the past,
There has not been provided a transparent packaging bag that can be held in an extremely shallow floor shape that can replace a styrofoam dish.

[0003]

[Problems to be Solved by the Invention] Recently, mass retailers have begun collecting styrofoam containers in stores, and the collected containers are returned to manufacturers and recycled as recycled materials. For this reason, housewives at home wash and dry Styrofoam containers before returning them. This is troublesome, and the washing of the container is performed only by water. The resin pellets returned to the manufacturer and regenerated have a strong odor, so that it is considered that there are few cases in which the resin pellets are used as recycled materials. On the other hand, a stretch film reproduction system has not been constructed. Actually, it is heavier than a Styrofoam container and uses a considerable area, but is discarded as general waste. Styrofoam dishes cannot be used for microwave-heated foods due to thermal deformation and heat melting. In addition, Styrofoam dishes are shallow and are not suitable for packaging liquid or fluid foods.
If a transparent packaging bag that can be held in a very shallow floor shape that can replace a styrofoam dish can be provided, grilled fish, sashimi, meat, tempura, and other prepared foods can be arranged and stored, and the contents can be visually checked and the product display sanitary In addition, liquids and liquid foods such as curry, stew and soup can be spread to packaging objects, and retort foods can be packaged and high-pressure steam heating treatment in a microwave oven without opening can be performed. There are advantages such as reduction of garbage.

[0004] The present invention has been made in view of the above points, and has as its object to provide a transparent packaging bag in which the shape of a pack does not collapse even when it is held in an extremely shallow floor shape that can be replaced with a styrofoam dish. I have. It is another object of the present invention to provide a packaged product that exhibits a good form on display by using a transparent packaging bag that can be held in an extremely shallow floor shape that can be used instead of a Styrofoam dish. Furthermore, the present invention
Provided is a method of closing the opening of the packaging bag and self-holding the packaging bag after the packaged product is accommodated and then performing self-sealing with the stick-shaped heat sealer by self-holding the state where the opening is in close contact. The purpose is.

[0005]

The first invention of the present application comprises a single bottom surface made of a film and two side surfaces made of a transparent film. When the inside angle of the corner corresponding to both ends of the longest diagonal is approximately 90 degrees and the bag is in a flat state, it is an inverted isosceles trapezoidal shape folded in two from the longest diagonal to mountain fold, and the two side portions are When the lower half of the bag is in the flat state, the bottom part of the two-folded inverted isosceles trapezoid is sandwiched, and the lower edge of the lower half part matches the inclined side and the bottom side of the bottom part and ends. The width constitutes a rim which is heat-sealed, and both side edges of the upper half have vertical ribs which are heat-sealed in a palm-shape manner and have a relational dimension that can be opened substantially into a cube. A packaging bag is provided. The second invention of the present application is to heat-seal the upper portion of the upper half of the two side portions that close the opening after storing the article to be packaged in the packaging bag of the first invention to form an opening heat-sealed portion. It is intended to provide a packaged product characterized in that it is tilted to one side to stabilize a planar state, and a barcode label, a content, a label describing a manufacturing date, etc. are displayed and attached to the tilted upper side.
The third invention of the present application is that, after storing the packaged article of the first invention, the upper portions of the upper halves of the two side portions that close the opening by pulling the longitudinal ribs on both sides are tilted to one side as it is. An object of the present invention is to provide a method of self-holding by closing an opening of a packaging bag, characterized in that the upper part of the upper half portions of the two side portions is stabilized so as to keep a flat state in which the upper portions are in close contact with each other.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A packaging bag and a packaged product according to the present invention,
An embodiment common to a method of self-holding by closing an opening of a packaging bag will be described with reference to the drawings. The packaging bag is an extremely short gusset-shaped bag having a bottom portion 1 and side portions 2 and 3. When the bottom portion 1 is folded in two, it is shown in FIGS. 1 (a) and 1 (b). It has a shape. FIG. 2 is a perspective view showing a state in which the bottom portion 1 is flattened from the flat state in FIG. When the packaging bag 1 is separated from the heat-sealed portion, as shown in FIG. 3, one bottom portion 1 and two side portions 2 and 3 are provided.
Divided into The bottom portion 1 and the side portions 2 and 3 can be made by folding a single film.

As shown in FIG. 2, the bottom portion 1 has a developed shape of a hexagon, and the inner angles of the corners corresponding to both ends of the longest diagonal are approximately 90 degrees. As shown in FIG. When in the flat state, it is an inverted isosceles trapezoidal shape folded in two from the longest diagonal line into a mountain fold, and the base of the inverted isosceles trapezoid is twice or more than twice the height. As shown in FIGS. 1 (a) and 1 (b), when the bag is in a flat state, the two side portions 2 and 3 sandwich the two-folded inverted isosceles trapezoidal bottom portion 1 as shown in FIGS. The lower edge of the lower half portion is aligned with the inclined side and the bottom side of the bottom portion 1 to form a rim rib 4 having a required dimension t and heat-sealed. Is approximately equal to the height c of the inverted isosceles trapezoid, and the width b of the upper half is equal to the dimension of the upper side of the inverted isosceles trapezoid. A V notch 6 for opening is provided in the middle of each vertical rib 5. The bottom 1 may be a transparent, translucent or opaque film. It is preferable to use a laminating agent which has anti-fogging properties and is firm in OPP or CPP. The side portions 2 and 3 are made of a transparent film so that the packaged object in the bag can be viewed particularly from the outside of the bag. It is preferable to print an edge pattern for a Japanese dish, an edge pattern for a Chinese dish, a bamboo skin pattern, or the like, on the edging ribs 4 so as to make the containers line up when displayed in a showcase.
This printing may be performed on either the bottom portion 1 or the side portions 2 and 3. Except for the rim 4, it is preferable to print a clean color such as milky white or white pearl on the upper surface of the bottom portion 1 (the bottom surface in the bag).

As shown in FIGS. 4A and 4B, eight suction pads P are used to suck and pull four points on two side portions 2 and 3. 5 is d = (ct) × 2 = a + ct, where d is the size of the upper side of the trapezoid.
It is preferable to determine the relational dimension such that With such a shape, as shown in FIG. 5, the height dimension at which the triangular portions 1b and 1c on both sides of the bottom portion 1 rise vertically is (c).
−t), the upper opening can be opened to have a substantially cubic bag shape of (b × 2c), and the bag length (a
+ Ct) does not become too high, so that it is easy to store grilled fish, sashimi, meat, tempura, and other prepared foods to be packed in an aligned state with chopsticks or the like.

As shown in FIGS. 6 (a) and 6 (b), after the packaged object S is stored in the packaging bag and the suction pad opened in a substantially cubic shape is released, the product is vertically raised. The triangular portions on both sides of the bottom portion are lowered until they come into close contact with the bag mounting surface, and the appearance of the hexagonal plate is exhibited by the presence of the rim ribs 4.
The upper part of the upper half 3 is displaced into a planar state and is fitted so as to close the opening naturally. When the inside is filled with air or replacement gas and the longitudinal ribs 5 and 5 on both sides are pulled and the upper portions of the upper halves of the two side portions 2 and 3 closing the opening are inclined to one side, the two side portions 2 , 3 can be stabilized so as to maintain a flat state in which the upper portions of the upper halves are in close contact with each other, so that they are placed on a conveyor (not shown) and conveyed. The upper portions of the upper halves of the two side portions 2 and 3 can be smoothly transferred to a flat state in which they are in close contact with each other. Since there is no need to provide a means for transferring between a pair of bar heat sealers and pulling the vertical ribs 5 and 5 on both sides again to close the opening in a plane state,
This can contribute to simplification of the configuration of the seal mechanism.

In this manner, heat sealing can be performed so that air accumulation is not generated when heat sealing is performed. The bar code label 8, the contents, the date of manufacture, etc. are described on the inclined upper surface side of the opening heat seal portion 7 while the upper portions of the upper halves of the two side portions 2, 3 are inclined to one side. When the label 9 is affixed, it becomes a display packaging state, becomes a transparent closed packaging bag having an ultra-shallow floor shape that can be replaced with a dish and the inside food can be visually recognized, and does not adhere dust at the time of display and does not contain insects and the like, Drying does not occur and hygiene is maintained. Since the labels 8 and 9 are not vertical, it is easy for the purchaser to see and hold, and the barcode label can be easily read at the cash register.

[0011] Since it is a transparent sealed packaging bag having an extremely shallow floor shape that can be replaced with a styrofoam dish, the purchaser can pick up the center of the opening seal portion and take it back. Fig. 5
As shown in FIG. 5, the package S is accommodated in a substantially cubic bag shape, so that even if the bottom 1 returns to the hexagonal shape, the weight of the package S placed on the bottom 1 is reduced. It is within the area excluding the triangular parts on both sides of, and if you pick up the center of the opening seal part and lift it up, four points corresponding to the two end positions of the lower side of the trapezoidal shape with inverted bottom when folding the bottom part in two It is in a state of being lifted by the line connecting the one hand-held part, and has a bending resistance because the rimming rib and the opening sealing part are two films, and in addition to this, when the bag is filled with air, rimming is performed. Since the ribs are tensioned, the hexagonal bottom portion does not fall down, and the packed form having the extremely shallow floor dish does not collapse, so that a sealed packaging bag that can be replaced with a dish can be provided. Opening is opened from the V notch 6.

It is to be noted that a high-pressure steam generated by the electronic heating can be provided with a bent inwardly-sealing portion which automatically releases the steam and prevents explosive rupture of the bag. In addition, instead of the opening heat-seal portion 7 and the cutout by the V notch 6,
Zipper fitting, pressure bonding of an adhesive portion, pressure bonding of a cold sealant, and the like can be employed. Further, an oxygen scavenger may be attached to the inner surface.

[0013]

The packaging bag according to the first aspect of the present invention has the following effects. (1) By sucking and pulling the four points on the two side parts with the suction pad, the triangle part on both sides of the bottom part can be opened vertically so that it becomes a substantially cubic bag shape with the upper part opened. In this case, since the bag length is not too high, it is easy to arrange and accommodate grilled fish, sashimi, meat, tempura, and other prepared foods to be packaged. (2) After storing the items to be packaged, release suction from the suction pad, which is open in a substantially cubic shape, and lower it until the triangular portions on both sides of the vertically standing bottom surface are in close contact with the bag mounting surface, The appearance of a hexagonal dish due to the presence of edging ribs, the upper parts of the upper halves of the two side parts are displaced into a flat state and fit together so that the opening naturally closes, and the inside is filled with air or replacement gas and heated. When sealed, it becomes an ultra-shallow floor shape that can replace a dish and becomes a transparent hermetically sealed packaging bag that allows the food inside to be visually recognized.Dust does not adhere at the time of display, insects etc. do not mix, drying does not occur, hygiene is maintained It is. (3) An ultra-shallow floor-shaped transparent sealed packaging bag that can replace the Styrofoam dish can be taken back by pinching the center of the opening seal part. The packaging bag is shaped like a cube and contains grilled fish, sashimi, meat, tempura, and other prepared foods in a line, so that even if the bottom part returns to a hexagonal shape, the packaging Weight is within the area excluding the triangular parts on both sides of the bottom part, so if you pick up the center of the opening seal part and lift it, it is equivalent to the two ends of the bottom side of the trapezoidal shape with inverted bottom when folding the bottom part in half The four points to be lifted by the line connecting the one hand-held point, the edge rib and the opening seal portion have bending resistance because the two films are aligned, and in addition to this, air is injected into the bag. When full, the fringing ribs are tensioned, so that the hexagonal bottom part does not fall down, the pack form having an extremely shallow floor dish does not collapse, and it is possible to provide a sealed packaging bag that can be replaced with a styrofoam dish, and to reduce waste. Connect. (4) Since it is in the form of a bag, liquids such as curries, turkeys and soups, and liquid foods can be spread to packaging objects, and retort foods can be packaged and high-pressure steam heating in a microwave oven can be performed without opening. it can. The package according to the second invention of the present application has the following effects. (1) The opening heat-seal part is tilted to one side to stabilize the planar state, and a bar code label, contents, a label describing the date of manufacture, etc. are displayed and affixed to the inclined upper side, so that product display Moreover, it is easy for customers to see and hold the label, and it is easy to read the barcode label at the cash register. The method for closing and self-holding the opening of the packaging bag according to the third invention of the present application has the following effects. (1) After storing the items to be packaged, pull the vertical ribs on both sides to close the opening, and tilt the upper part of the upper half of the two side parts to the one side as it is, so that the upper half of the two side parts The upper part of the upper half of the two side parts is placed between a pair of bar heat sealers that are provided with a corresponding inclination by simply transporting on a conveyor, because the upper part is configured to stabilize so as to maintain a flat state where they are in close contact with each other. The upper part can be transferred to a flat state where they are in close contact with each other, and there is no need to transfer between a pair of bar heat sealers and pull the vertical ribs on both sides again to close the opening to a flat state, simplifying the configuration of the seal mechanism. It can contribute to the development.

[Brief description of the drawings]

FIG. 1 (a) is a front view of a packaging bag of the present invention, and FIG. 1 (b) is a cross-sectional view.

FIG. 2 is a perspective view when the bottom surface of the packaging bag is flattened from the state of FIG. 1;

FIG. 3 is a perspective view when the packaging bag of FIG. 1 is separated from a heat-sealed portion into a bottom portion and a side portion.

4 (a) is a front view showing a method of opening the packaging bag of FIG. 1 into a cube by a suction pad, and FIG. 4 (b) is a sectional view.

FIG. 5 is a perspective view showing a state in which the packaging bag of FIG. 1 is opened in a cube by a suction pad.

6A is a perspective view showing a state in which an object to be packaged is accommodated in the packaging bag of FIG. 1, the opening is closed and heat sealing is performed, and FIG. 6B is a cross-sectional view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bottom part, 2, 3 ... Side part, 4 ... Edge rib, 5 ... Vertical rib, 6 ... V notch, P ... Suction pad, 1b, 1c ... Triangular part on both sides of bottom part 1,
S: packaged item, 8: bar code label, 9 ...
·label,

Continued on the front page F term (reference) 3E064 AB25 BA21 BC13 BC18 EA05 FA01 GA01 HA02 HB02 HN06 HP01 3E067 AA03 AA04 AB01 BA12A BB14A BC02A CA11 CA24 EA06 EB07 EE04 FA01 FC01

Claims (3)

[Claims] 1. A bottom surface portion comprising a single bottom portion made of a film and two side portions made of a transparent film, wherein the bottom portion has a hexagonal expansion shape and has corner portions corresponding to both ends of a longest diagonal line. When the inner angle is approximately 90 degrees and the bag is in a flat state, the bag has an inverted isosceles trapezoidal shape that is folded in two from the longest diagonal to a mountain fold, and the two side portions have a lower half when the bag is in a flat state. Sandwiching the bottom of the two-fold inverted isosceles trapezoid, the lower edge of the lower half part matches the sloped side and the bottom side of the bottom part and ends and the required width is heat-sealed to constitute a rimming rib A packaging bag, characterized in that both side edges of the upper half portion have vertical ribs heat-sealed in the form of palms and have dimensions related to each other so that they can be opened substantially in a cube. 2. After the object to be packaged is accommodated in the packaging bag according to [1], the upper portions of the upper halves of the two side portions that close the opening are heat-sealed to form an opening heat-sealed portion. A packaged product characterized in that it is tilted to one side to stabilize a flat state, and a barcode label, a content, a label indicating the date of manufacture, etc. are displayed and affixed to the tilted upper side. 3. After the object to be packaged is stored in the packaging bag according to [1], the upper portions of the upper halves of the two side portions which close the opening by pulling the vertical ribs on both sides are kept on one side. A method of self-holding by closing an opening of a packaging bag, characterized in that the packaging bag is stabilized so as to maintain a flat state in which upper portions of two side portions are in close contact with each other by being inclined.