JP2022119130A - food packaging bag - Google Patents

Abstract

To provide a food packaging bag for receiving a solid food such as a sandwich, the food packaging bag configured to be openable largely.SOLUTION: A food packaging bag includes a bag body that is configured by superposing one pair of plastic film sheets together and sealed at three sides in a state that a predetermined range at a tip of each sheet is left as a tab 4A, 4B by a top seal portion 2A, 2B, a knob 7 that is provided by cutting an upper portion into a reversed U-shape with a lower end sandwiched by one pair of legs cut in the tab portion of one sheet left, a cut tape 6 that is provided having a directionality of tearing and broader in width than the knob on an underside of the one sheet, with one end getting across the top seal portion and reaching the knob so that the reached portion is sealed on an underside of the knob by heat sealing, and slits 6A, 6B that are provided conforming to one pair of legs of the knob cut in a bonding area with the knob.SELECTED DRAWING: Figure 2

Description

The present invention relates to food packaging bags for containing solid food products, such as triangular sandwiches.

A food packaging bag is known in which a pair of plastic film sheets are superimposed to form a bag body sealed on three sides, and a solid food such as a sandwich is inserted into the bag body for packaging.

As a packaging bag that assumes a triangular sandwich, a pair of plastic film sheets with both sides narrowing toward the tip are overlapped and three sides are sealed with adhesive means such as heat sealing to form a three-dimensional bag. Those constructed by spreading are widely used. In this case, the sealing portion that constitutes the bag body is provided in a state in which a predetermined range of the front end of the sheet is left as a tab and the rear end is left as an opening. It is required for the top sealing portion in which the sheets are adhered together and the side sealing portion in which both sides of the sheets behind the top sealing portion are adhered to each other.

After the sandwich is accommodated in the packaging bag, the surplus part of the bag extending from the rear end of the food to the opening of the rear end of the bag is folded and sealed with an adhesive tape or the like to be distributed as a packaged sandwich. Therefore, the consumer who purchased this sandwich must remove the package and take out the food contained therein. However, since it is troublesome to open the sealed portion at the rear end of the food, the bag itself is torn and destroyed to remove the food. was taking it out. However, since it is difficult to tear the bag as it is without any clues, many easy-to-open means have been proposed in the past.

As a typical example of the easy-open means, a pair of plastic film sheets are superimposed and the top portion is formed by bonding the sheets together along a line that crosses both sides while leaving a predetermined range of the ends of each sheet as a tab. A bag body is sealed on three sides by a sealing portion and a side sealing portion in which both sides of each sheet behind the top sealing portion are adhered to each other. A food packaging bag having an easy-opening means such as a peninsula-shaped tongue for tearing the bag body, and a cut tape whose one end reaches the easy-opening means beyond the top sealing part and which is adhered to the back surface of the sheet. is well known.

In addition, it has been known to use linearly cut films having tearing directions as a pair of plastic film sheets in the food packaging bag (Patent Document 1).

Registered Utility Model Publication No. 3032860

In the above-described prior art, the direction defined along the cut tape, that is, along the entire length of the slope of the bag body, is obtained by grasping an easy-to-open means such as a knob provided on the tab portion with the fingertips together with the cut tape and pulling it up. The sheet is then cut away, exposing the sandwich through the window created by the cut.

In this case, the packaging bag has not been completely opened yet, and in order to take out the contained food, it is necessary to grasp both ends of the torn portion with fingers and pull them in opposite directions to completely open the bag body. Therefore, it is desired that the window formed by cutting is as large as possible, and for this purpose, it is necessary to increase the width of the cut tape and the easy opening means such as a knob.

With regard to the above, in packaging bags that use a linear cut film with tear directionality as a plastic film sheet, if the width of the easy-opening means such as the knob and the cut tape is narrow, it will not become apparent, but if it is widened. When crossing over the hermetic seal part and product display label, stress was applied and it broke, causing the sandwich to pop out or make it difficult to open.

The present invention has been made with the object of providing a food packaging bag that eliminates the above problems.

That is, the present invention is a top sealing portion in which a pair of plastic film sheets are superimposed and adhered by heat sealing along a line crossing both sides while leaving a predetermined range of the tip of each sheet as a tab. and a side sealing portion in which both sides of each sheet behind the top sealing portion are adhered to each other to form a bag body sealed on three sides, and a tab portion of one sheet is used for easy opening for tearing the bag body. A packaging bag for food, which is provided with means for inserting a solid food into the bag and expanding the bag into a plate-like three-dimensional shape along the outer shape of the food,
A tab portion of one sheet is provided with a knob portion having a certain area above by a tongue piece cut in the upper part like a peninsula except for a lower end sandwiched between a pair of cut leg portions, and
A cut tape is provided on the back surface of one of the sheets, one end of which extends beyond the top sealing portion to reach the knob portion, and the portion that reaches the knob portion is adhered to the back surface of the knob portion by heat sealing,
The above-mentioned cut tape has a directionality of tearing in the full length direction of the sheet,
having a width wider than the width of the knob,
It is characterized in that notches matching the cut leg portions of the pair of knobs are provided at the joints with the knobs.

Further, in the food packaging bag described above, the distance between the notches in the cut tape that matches the pair of legs of the cut tab is in the range of 10 mm to 30 mm at the bonding point with the tab. It is characterized by

Further, in the food packaging bag described above, in the bonding portion with the knob portion, the notch of the cut tape that matches the pair of legs of the cut knob portion is perpendicular to the notch on the left and right outside of the cut tape. It is characterized in that a notch in the direction is provided, and the notch is provided on the top sealing portion where the sheets are adhered to each other by heat sealing.

According to a fourth aspect of the present invention, in the food packaging bag, the cut tape is adhered to the back surface of one of the sheets by a plurality of heat-sealing lines arranged in the direction of the entire length of the sheet, and the adhesive portion of the cut tape is adhered to the grip portion. In (3), cuts in the cut tape that match the pair of legs of the cut tab are arranged between the heat seal lines.

According to a fifth aspect of the present invention, in the food packaging bag, the cut tape has a length of 1/3 to 1/2 of the total length of each sheet.

A sixth aspect of the present invention is characterized in that, in the food packaging bag, a straight cutting film made of high-density polyethylene is used as the cutting tape.

In the food packaging bag of the present invention, a tab portion of one sheet is formed by a tongue piece having a peninsular cut in the upper part, leaving a lower end sandwiched between a pair of cut leg portions. In addition, a cut tape is provided on the back surface of one of the sheets, one end of which reaches the knob beyond the top sealing portion, and the reached portion is adhered to the back surface of the knob by heat sealing. In addition to giving tear directionality in the full length direction, it has a width wider than the width of the above-mentioned knob, and at the joint with the knob, cuts are provided that match the cut legs of the pair of knobs. , the cut tape is torn between the seal lines that stop the cut tape, and the directional cut tape can be torn straight without impairing the orientation.

Furthermore, as in the second aspect of the invention, when the gap between the notches of the cut tape that matches the pair of legs of the cut tab is set within the range of 10 mm to 30 mm at the adhesion point with the knob, the head There is little resistance when tearing seals and product display labelers, and there is no stress that causes the sandwich to pop out or make it difficult to open.

On the other hand, after opening vertically with a cut tape, the bag is opened to the left and right to take out the product, but if the directional film is split perpendicularly (horizontally) to the tearing direction (longitudinal), the resistance is strong and it is difficult to open. In this regard, as in the third aspect of the invention, cuts are made in a direction perpendicular to the cuts on the left and right outer sides of the cuts in the cut tape that match the pair of legs of the cut tabs at the joints with the knobs. In addition, when the notch is provided on the top sealing portion where the sheets are heat-sealed, the function of the directional film is lowered by heat-sealing the directional film and the main body, and the cuts are made to the left and right at that point. Since cuts are made to facilitate opening, the sandwich bag can be easily opened to the left and right after the cut tape is opened, and the product can be easily taken out.

Further, as in the fourth aspect of the invention, the cut tape is adhered to the back surface of one of the sheets by a plurality of heat-sealing lines arranged in the direction of the entire length of the sheet. When the notches in the cut tape that match the pair of legs of the part are arranged between the above heat seal lines, the cut tape can be used as a guide for opening by stepping on the cut tape with multiple seals, while the cut tape It does not separate after opening and does not produce waste.

At the time of sandwich packaging, the cut tape is folded together with the back film sheet and wraps around to the bottom side of the food. By adjusting the ratio from /3 to 1/2, the package can be opened cleanly without tearing at the opening end.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of the food packaging bag of the present invention in an unfolded state; The top view of the principal part of the packaging bag for food of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The partially-omission top view of the food packaging bag of this invention. The perspective view of the opening process of the packaging bag for food of this invention. The perspective view of the opening process of the packaging bag for food of this invention. The perspective view of the food packaging bag of this invention. The top view of the principal part of the opening process of the packaging bag for food of this invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings. Here, a description will be given by taking as an example a food packaging bag assuming a triangular sandwich as the food to be packaged. That is, in this packaging bag, a pair of sheets made of plastic film whose both sides become narrower toward the tip are superimposed, and in a state in which a predetermined range of the tip of each sheet is left as a tab portion, a tab portion crosses both sides. A bag is formed by sealing three sides with a top sealing portion in which the sheets are adhered to each other by sealing adhesive lines and a side sealing portion in which both sides of each sheet behind the top sealing portion are adhered to each other.

In the above-mentioned bag, by inserting the triangular sandwich into the bag, the bag is three-dimensionally expanded into a plate-like triangular shape in which the thickness of a pair of opposing slopes is defined by the width of the top sealing portion. . In this case, as a means for tearing the bag body for taking out the sandwich, an easy-to-open means was provided on the tab portion of one sheet, and a cut tape was provided on the tab portion with one end extending beyond the adhesive line for top sealing. It is adhered to the back side of the sheet so as to reach the easy opening means. In this bag body, the easy-opening means provided on the tab portion is picked up together with the cut tape with the fingertips and pulled up, whereby the sheet is cut off along the direction defined along the cut tape, that is, along the entire length of the slope of the bag body. produces

The bag body is composed of a pair of sheets 10 and 1 made of plastic film. A tape 6 is provided.

Here, a straight cutting film made of high-density polyethylene is used as the cutting tape 6, but the straight cutting film is not limited to this, and may of course be made of stretched polypropylene, for example.

This bag body has a pair of sheets 10, 1 made of plastic film and a cut tape 6 adhered to the back surface of the sheet 10 (inner surface side of the bag). In this embodiment, a strip 5 made of a plastic film is provided to prevent contamination, which should come into contact with the end face where the ingredients on the back side of the inserted sandwich are exposed. A pair of sheets 10 and 1 are formed in a trapezoidal or trapezoidal-like shape with both sides narrowing toward the tip. 4 and 6).

In this case, when forming the bag, a predetermined range of the leading end of the sheet is left as tab portions 4A and 4B which do not constitute the bag portion, and the trailing end of the sheet is left as an opening for inserting food. Specifically, top sealing adhesive lines 2A, 2B for bonding the sheets to each other are provided along lines that traverse both sides of the sheets at the starting points of the tab portions 4A, 4B, and from the top sealing portions. Side sealing portions 3A and 3B are provided by adhering both sides of each rear sheet to form three side sealing portions of the bag body. The thickness of a pair of slopes A and B facing each other with folds A1, A1 and B1, B1 is defined by the width of the top sealing portions 2A, 2B, and the side faces C, C form a triangular plate-shaped triangle. By unfolding the bag, the basic shape of the bag is completed. Here, heat sealing is adopted as the bonding means.

FIG. 2 is a diagram showing the main part of the present invention. The tab portion 4A of the one sheet 10 has a pair of cut leg portions 7A, and a grip portion 7 having a certain area is formed by a tongue cut upward in a peninsular shape except for the lower end sandwiched between the cut leg portions 7A. be provided.

On the other hand, a cut tape 6 is provided on the back surface of one of the sheets 10, with one end passing over the top sealing portions 2A and 2B to reach the knob portion 7, and the reached portion being adhered to the back surface of the knob portion by heat sealing. The cut tape 6 has a width wider than the width of the knob portion 7, and is provided with notches 6A, 6A that match the pair of cut leg portions 7A, 7A of the knob portion at the bonding portion with the knob portion.

Furthermore, in this case, cuts 6A of the cut tape 6 matching the pair of leg portions 7A, 7A of the cut tab portion 7A, and cuts 6B in the direction perpendicular to the above cuts on the left and right outer sides of the cut tape 6, 6B is provided, and the notches are provided on the top sealing portions 2A and 2B where the sheets 1 and 10 are heat-sealed to each other. The reason why the notches 6B, 6B are provided on the top sealing portions 2A, 2B is that heat sealing the directional film and the main body lowers the function of the directional film and makes it easier to open left and right.

FIG. 3 shows means for adhering the cut tape 6 to the sheet 10. Here, the cut tape is adhered to the back surface of the sheet by means of three heat seal lines S arranged along the entire length of the sheet. In this case, if the notches 6A, 6A of the cut tape that match the pair of leg portions 7A, 7A of the cut tab portion are arranged between the heat seal lines, the cut tape By stepping on with a plurality of stickers, it becomes a guide for opening, and on the other hand, after opening the cut tape, it does not separate and waste is not produced.

During sandwich packaging, the cut tape 6 is folded together with the back film sheet and wraps around the bottom of the food (see FIG. 6). By setting the ratio to 1/2, it is possible to cleanly open the package without tearing the opening end in the middle.

Also, here, the top sealing portions 2A and 2B are shaped like a grid to reduce the number of sealing portions, thereby reducing the resistance when the cut tape 6 is torn.

After the sandwich sandwich is inserted into the bag whose basic shape has been completed through the above steps, the surplus part of the bag from the rear end of the sandwich to the opening at the rear end of the bag is folded and sealed with adhesive tape or the like. Then, the packaging is completed (see FIGS. 4 and 6).

When opening the above-described food packaging bag, the tab 4A of the sheet 10 on the side to which the cut tape 10 is adhered is pinched and pulled up while being turned over, thereby pulling up the cut tape adhered thereto. As a result, the central portion of the sheet is cut off while being torn along the cut tape (see FIG. 5).

Next, if one sheet 10 of the bag body is pulled to the left and right across the window portion produced by the cutting, it is torn along the top sealing adhesive line 2A and can be easily opened to the left and right, and the wide window portion P is formed. It will appear (see FIG. 7).

P window part 1 sheet 2A adhesive line for top sealing 2B adhesive line for top sealing 3A side sealing part
3B side sealing part
4A tab 4B tab 5 strip (for dirt prevention) 6 cut tape 7 knob 10 sheet

Claims (6)

A top sealing portion obtained by superimposing a pair of plastic film sheets and bonding the sheets together by heat sealing along a line crossing both sides while leaving a predetermined range of the ends of each sheet as tabs; and a top sealing portion. The bag body is sealed on three sides by the side sealing portions in which both sides of each sheet further behind are adhered to each other, and an easy-opening means for tearing the bag body is provided on the tab portion of one of the sheets. A food packaging bag that expands into a plate-like three-dimensional shape along the outer shape of the food by inserting solid food into the body,
A tab portion of one sheet is provided with a knob portion having a certain area above by a tongue piece cut in the upper part like a peninsula except for a lower end sandwiched between a pair of cut leg portions, and
A cut tape is provided on the back surface of one of the sheets, one end of which extends beyond the top sealing portion to reach the knob portion, and the portion that reaches the knob portion is adhered to the back surface of the knob portion by heat sealing,
The above-mentioned cut tape has a directionality of tearing in the full length direction of the sheet,
having a width wider than the width of the knob,
A packaging bag for food, characterized in that a notch is provided at a portion where the handle is bonded to the handle so as to match the leg portions of the pair of notched handles. 2. The food packaging bag according to claim 1, wherein the gap between the notches in the cut tape that match the pair of legs of the notched tab is within the range of 10 mm to 30 mm. Cuts are provided in a direction perpendicular to the cuts on the left and right outer sides of the cuts in the cut tape that match the pair of legs of the cut tabs at the adhesion points with the knobs, and the cuts are heat-sealed to each other. 3. The food packaging bag according to claim 1, which is provided on the top sealing portion which is adhered. The cut tape is adhered to the back surface of one of the sheets by a plurality of heat-sealing lines arranged in the direction of the entire length of the sheet, and the cut tape matches the pair of legs of the cut tab at the adhesion point with the tab. 4. The food packaging bag according to any one of claims 1 to 3, wherein the cut is arranged between the heat seal lines. 5. The food packaging bag according to any one of claims 1 to 4, wherein the cut tape has a length of 1/3 to 1/2 of the total length of each sheet. 6. The food packaging bag according to any one of claims 1 to 5, wherein the cut tape is a straight cutting film made of high density polyethylene or oriented polypropylene.

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