JP2005035673A - Food packaging bags for sandwiches and the like, and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food packaging bag such as a sandwich having a sense of quality while making a packaged food visible, and a method for producing the same.
A method for producing a food packaging bag according to the present invention includes a step of sealing an appropriate portion of the sheet band to define each food packaging bag in a state where a pair of long sheet bands are rolled out and overlapped. And a step of cutting or fusing to separate each food packaging bag, and one sheet band is partly made of a plastic sheet and the other part is made of a paper quality sheet or attached to each food packaging bag. The one having a sheet is used, and the other long sheet band is made of a sheet-like sheet or one having a sheet-like sheet, and one sheet band is individually provided. It is characterized in that it is manufactured by bonding a plastic sheet and a paper sheet supplied to the sheet.
[Selection] Figure 2

Description

TECHNICAL FIELD The present invention relates to a food packaging bag for packaging food (hereinafter simply referred to as “food”) that is a sandwich, cooking bread, castella, confectionery bread, etc., and has a triangular shape (generally a right triangle shape), and a method for producing the same. Is.

This type of food packaging bag is formed by stacking a pair of sheets having a substantially trapezoidal shape in plan view and sealing the upper side and the oblique side, and has a heat welding property such as polyethylene or polypropylene as the material of the sheet. A plastic sheet is generally used. When manufacturing, prepare a pair of raw rolls of plastic sheets as raw materials, feed out the plastic sheet strips from the respective raw rolls, heat seal the appropriate places in a state of overlapping each other, and then cut or melt individually The food packaging bag is completed by going.

The food packaging bag has an advantage in that the sheet is transparent and the packaged food (type, quality, freshness, etc.) can be directly visually confirmed. However, since the entire sheet is transparent, the packaged food is completely visible, so that it lacks profound feeling and the product looks cheap. Even so, it has been said that until now, but due to the recent rise in health boom, the customer's mind has become more upscale, and this kind of customer is motivated to purchase products that use the above food packaging bags. It is gone.

In addition, in the production of the food packaging bag, for the purpose of displaying the product in the food packaging bag, an original fabric roll on which a design for displaying the product is repeatedly applied (printed) in the longitudinal direction of the plastic sheet strip is used. However, since the design varies depending on the type of product, different original rolls are usually prepared for each design. For this reason, in the food packaging bag manufacturing apparatus, it is necessary to change the state of the original roll every time the type of product is switched. However, due to the frequent occurrence of this work, a decrease in the operating rate of the manufacturing apparatus becomes a problem. come. This problem becomes more prominent as the variety is produced in small quantities.

Or, if it is a manufacturing method that uses a stock roll pre-designed for product display, if there is a need to redesign the product due to product renewal, etc., All have to be discarded, which is very uneconomical. This problem is more noticeable for products with a shorter life cycle.

Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a food packaging bag such as a sandwich and the like having a sense of quality while allowing the packaged food to be visually recognized, and a method for manufacturing the same. Even if the product type is changed to a material with a different design for product display, the time can be reduced as much as possible, or the product can be renewed. Even when the material with the previous design is discarded due to a change in the design for display, a food packaging bag such as a sandwich that can minimize the disposal loss and a method for manufacturing the same. It is an issue to provide.

A food packaging bag such as a sandwich according to the present invention is a food packaging bag such as a sandwich which overlaps a pair of sheets, seals one end and both sides, and has the other end as an opening for containing food. A part of the sheet is made of a plastic sheet, and the other part of the one sheet and the other sheet are made of a paper quality sheet, or are provided with a paper quality sheet.

And as the manufacturing method, for example, in a state where a pair of long sheet strips are rolled out and overlapped, a step of sealing appropriate portions of the sheet strips to define each food packaging bag, and cutting or fusing In the method of manufacturing a food packaging bag such as a sandwich provided with a step of separating each food packaging bag, one sheet band is a plastic sheet in order to be attached to each food packaging bag and the other part is a paper sheet Or a sheet belt is used, and the other sheet band is formed of a paper sheet or configured with a paper sheet, and one sheet band is It is possible to adopt a method of manufacturing by joining a plastic sheet and a paper sheet supplied individually.

However, according to the above configuration, by making a part of one sheet transparent using a plastic sheet, it is possible to directly confirm the packaged food (type, quality, freshness, etc.) inside the package. Moreover, since the remaining food (the other part of one sheet and the other sheet) is covered with an opaque paper-like sheet, the food inside does not become completely visible. Therefore, coupled with the sheet being of paper quality, a solid feeling increases and a high-class feeling is provided.

If a product display design is attached to only one part of one sheet or the other part, the other and other sheets can be used as a common part regardless of the type of product. It becomes.

Further, in the food packaging bag such as a sandwich according to the present invention, the pair of sheets has a shape gradually narrowing from the other end side to the one end side, and a part of the one sheet is the one sheet. Among these, it is possible to adopt a configuration that is a portion corresponding to at least the front surface of the food when the food is stored.

As a manufacturing method thereof, for example, in the sealing step, openings for food storage are alternately formed in the width direction of the sheet band, and from the food storage openings toward the width direction of the sheet band. Including a step of sealing obliquely with respect to the width direction of the sheet band so as to gradually become narrower, and the cutting or fusing step cuts or melts the portion sealed obliquely by the sealing step, One sheet band is a method of manufacturing a long plastic sheet band by overlapping and joining a rectangular paper sheet corresponding to an area sealed obliquely by a sealing process, One sheet band is composed of a rectangular paper sheet corresponding to the region sealed obliquely by the sealing process and a rectangular plastic sheet corresponding to the other region. Preparative prepared by joining alternately in the longitudinal direction of the sheet strip, a method can be adopted such.

However, according to the said structure, the part corresponded in the front of the packaged food becomes a transparent plastic sheet, and the part can be visually recognized. For example, if the sandwich is viewed from the front, its type, quality, freshness, etc. can be confirmed, which is sufficient as a visible range. In addition, since most of the portions (portions corresponding to both sides and the back of the packaged food) are covered with an opaque paper-based sheet, the food is not completely exposed and a high-class feeling is imparted.

In addition, in the manufacturing process, the rectangular paper sheet is bisected on a substantially diagonal line, and one divided paper sheet is a portion corresponding to the side of the food to be packaged in one sheet of one food packaging bag. The other divided paper quality sheet constitutes a portion corresponding to the side surface of the food in one sheet of the adjacent food packaging bag arranged in the one food packaging bag.

Further, in the food packaging bag such as a sandwich according to the present invention, the pair of sheets has a shape gradually narrowing from the other end side to the one end side, and a part of the one sheet is the one sheet. Among these, a configuration corresponding to a part of the front of the food when the food is accommodated may be employed. Such a configuration further narrows the visible range and further enhances the sense of quality.

  Furthermore, in the food packaging bag such as a sandwich according to the present invention, the other sheet band is formed by joining a paper sheet to a plastic sheet, and the other side of the plastic sheet is the other sheet. It is possible to adopt a configuration that protrudes outward from the paper sheet and the one sheet.

  As the manufacturing method, the other sheet band is manufactured by joining the paper sheet to a plastic sheet wider than the paper sheet, and the sealing step includes a pair of sheets, Including a step of overlapping so that both ends protrude in the width direction of the paper sheet and one of the sheet bands, and the cutting or fusing step is a step of forming separation means in the protruding portion along the longitudinal direction of the sheet band The manufacturing method which further contains can be employ | adopted.

However, according to the above configuration, the finished food packaging bags can be stacked, and the protruding plastic sheets can be thermally welded together to integrate the food packaging bags, or one food packaging bag can be integrated. It becomes easy to separate from other food packaging bags. Therefore, the operability of the storing operation can be improved in the distribution process and the food storing process.

As described above, according to the present invention, by using a plastic sheet and making a part of one sheet transparent, it is possible to directly confirm a product (type of contents, quality, freshness, etc.) with the naked eye. By making the remainder (the other part of one sheet and the other sheet) an opaque paper-based sheet, the product is not completely exposed, and combined with the paper quality, the profound feeling increases. A sense of luxury. Therefore, according to the present invention, it is possible to arouse purchase intention of a product.

Further, according to the present invention, if a product display design is attached to only one part of one sheet or the other part, the other sheet and the other sheet are common parts regardless of the type of the product. In the manufacturing equipment, even if the changeover of the product type to the material with a different design for product display occurs, the common part does not need to be replaced. Therefore, the time required for setup change can be shortened, or due to changes in the product display design due to product renewal, etc., the materials with the previous design must be discarded. The part can be used as it is, so that the loss of material disposal can be suppressed.

<First embodiment>
Hereinafter, the food packaging bag according to the first embodiment will be described with reference to FIG.

In the food packaging bag according to the first embodiment, a pair of sheets 1 and 4 (the front sheet 1 and the back sheet 4) are overlapped, and one end and both side ends are sealed, and the other end is an opening for containing food. 5 and so on. More specifically, the food packaging bag according to the first embodiment is formed by overlapping a pair of the front sheet 1 and the back sheet 4 having a substantially trapezoidal shape in plan view and sealing the upper side portion and the oblique side portion. is there.

A part of the front sheet 1 is made of a plastic sheet 2 having heat welding properties such as polyethylene and polypropylene, and the other part is made of a paper quality sheet 3 having paper quality. A part is a part corresponding to the front of the food to be packaged (a right-sided triangular slope of the food), that is, a part of a rectangular region with the narrowed seal part at the top, and the other part is The portion corresponding to the side of the food to be packaged, that is, the portion of the right triangular region on both sides of the rectangular region, the edges of the plastic sheet 2 and the paper sheet 3 are overlapped, and the portions are sealed and integrated They are joined to form an overall shape (note that the paper sheet 3 may be partially bonded to the plastic sheet 2 having the overall shape so as to be integrally joined).

In contrast to the front sheet 1 made of two types of materials, the back sheet 4 is made of a single paper sheet. This paper sheet is the same as the paper sheet 3 of the front sheet 1, for example, a multilayer sheet obtained by laminating rayon paper formed in a Japanese paper shape and a plastic film having heat-weldability such as polyethylene or polypropylene, A single layer sheet in which rayon paper is impregnated with polyethylene resin or polypropylene resin, or a nonwoven fabric such as a spunbond nonwoven fabric is used. Therefore, the other part of the front sheet 1 and the back sheet 4 are presented with a whirling pattern such as Japanese paper, and this whispering pattern makes the food packaging bag rich in quality.

An inner sheet 6 is attached to the front sheet 1. The inner sheet 6 is the same quality as the plastic sheet 2 of the front sheet 1 and is point-sealed on the inner surface of the plastic sheet 2 so that, for example, a sandwich of ingredients mixed with boiled eggs and mayonnaise is accommodated. When the ingredients adhere to the inner sheet 6, the outer sheet 1 is not contaminated and the appearance is not impaired.

On the other hand, as the cutting means for tearing the back sheet 4, two cut tapes 7 and 7 (however, a single cut tape 7) may be spaced apart from each other. It is stuck in parallel. The cut tape 7 is sealed on the inner surface of the back sheet 4 from one end to the other end of the food packaging bag, and a cut is made in the header portion (one end of the food packaging bag and the four sides sealed). By pulling down the knob piece 9 formed in this way, the cut tapes 7, 7 tear the back sheet 4 with a certain width.

In addition, notches 10 and 10 are formed at both corners of the opening 5 of the food packaging bag to facilitate the opening operation of the opening 5.

The food packaging bag which concerns on 1st embodiment consists of the above structure, and demonstrates the manufacturing method of this food packaging bag next.

<Method for producing food packaging bag in which paper sheet 3 is adhered to plastic sheet 2>
In the manufacturing method shown in FIG. 2, a process A for forming a sheet strip (hereinafter referred to as “front sheet strip”) 11 as a base of the front sheet 1, a sheet strip as a base of the back sheet 4 (hereinafter referred to as “back sheet”). A portion corresponding to one end of the food packaging bag among the step B for attaching the cut tape 7 to the band 14, the step C for forming the knob 9, and the superposed front sheet band 11 and back sheet band 14. A process D for sealing, a process E for sealing portions corresponding to both ends of the food packaging bag, a process F for cutting and cutting each food packaging bag, and a process G for forming the notch 10 in the opening 5 of the food packaging bag. ing.

In the process A, a sheet band (hereinafter referred to as “plastic sheet band”) 12 that is a base of the plastic sheet 2 of the front sheet 1 and a sheet band that is a base of the paper sheet 3 of the front sheet 1 (hereinafter “paper sheet band”). The sheet 13 is fed out from the raw roll, the paper sheet strip 13 is cut into a predetermined length by the cutter 15, and the cut paper sheet 13 is superposed on the corresponding portion of the plastic sheet strip 12 with a heat seal bar ( By sealing with a long sheet of plastic sheet, a sheet of rectangular paper is joined to a long plastic sheet band to form the front sheet band 11.

In step B, the back sheet strip 14 is unwound from the original roll, and the cut tape 7 is adhered to the back sheet strip 14 with a heat seal bar (not shown). In Step C, the end piece located on one end side of the food packaging bag in the cut tape 7 is cut with a cutter (not shown) to form the tab 9. The reason why the position where the cut tape 7 is adhered and the position where the tab 9 is formed is alternately shifted in the width direction of the back sheet band 14 is to form the food packaging bags alternately in opposite directions.

In step D, the plastic sheet and the back sheet 14 of the front sheet band 11 are sealed with a heat seal bar 17 at one end of the plastic sheet. In step E, the paper sheet and the back sheet 14 of the front sheet band 11 are sealed with a heat seal bar 18 in a diagonal line of the paper sheet. By these two steps D and E, the openings 5 for containing food are alternately formed in the width direction of the sheet bands 11 and 14, and the width gradually decreases from the opening 5 in the width direction of the sheet bands 11 and 14. A food packaging bag is defined.

In step F, the portion sealed obliquely by the heat seal bar 18 is cut with a cutter (not shown). As a result, the food packaging bag is cut in a state in which the paper sheet of the front sheet band 1 is divided into two substantially on a diagonal line. In step G, notches 10 are formed at both corners of the opening 5 with a cutter (not shown).

<Method for producing food packaging bag in which plastic sheet 2 and paper sheet 3 are joined alternately>
In the manufacturing method shown in FIG. 3, the process A for forming the front sheet band 11, the process B for attaching the cut tape 7 to the back sheet band 14, the process C for forming the knob 9, and the superposed front sheet band 11 And the process D which seals the location corresponding to one end of a food packaging bag among the back sheet | seat strips 14, the process E which seals the location corresponding to the both ends of a food packaging bag, the process F which cuts and separates each food packaging bag And a process G for forming the notch 10 in the opening 5 of the food packaging bag. Since this manufacturing method is different from the previous manufacturing method only in step A and is the same after step B, it will be redundantly described and will not be described.

In step A, as shown in FIG. 4, the plastic sheet strip 12 and the paper sheet strip 13 are each fed out from the original fabric roll, cut into a predetermined length by the cutter 15, and cut into the end portion of the cut plastic sheet. In this state, the rectangular plastic sheet and the rectangular paper sheet are alternately joined to each other by sealing the portion with the heat seal bar 16 in a state where the ends of the rectangular rectangular paper sheet overlapped with each other. A sheet band 11 is formed.

The food packaging bag which concerns on 1st embodiment is manufactured with the above manufacturing method, and shows the state which packaged the food in FIG. According to the food packaging bag according to the first embodiment, by using a plastic sheet 2 to make a part of the front sheet 1 (a part corresponding to the front of the food) transparent, the packaged inner food (type of , Quality, freshness, etc.) can be directly visually confirmed, and the food is covered with the other part of the front sheet 1 (part corresponding to the side of the food) and the back sheet 4 which are opaque paper-like sheets 3. Therefore, it is not completely visible. Therefore, coupled with the sheet being of paper quality, a solid feeling increases and a high-class feeling is provided.

And according to the food packaging bag which concerns on 1st embodiment, the design for goods display is printed only on the plastic sheet 2 of the front sheet 1, and is printed on the paper quality sheet 3 and the back sheet 4 of the front sheet 1. (The fact that it is not printed means that a unique design is not printed for each product for product display), so the paper quality sheet 3 and the back sheet 4 of the front sheet 1 are the types of products. Can be used as a common part.

Accordingly, in the manufacturing apparatus shown in FIG. 2 or FIG. 3, even when the product type is changed, the plastic sheet band 12 is replaced only when the product is changed to a material with a different design for displaying the product. It is sufficient that the paper sheet strip 13 and the back sheet strip 14 do not need to be replaced, so that the time required for the setup change can be shortened, and the product display design change accompanying the product renewal etc. The material with the above design must be discarded, but only the plastic sheet band 12 may be discarded, and the paper sheet band 13 and the back sheet band 14 can be used as they are. Can be suppressed.

<Second embodiment>
Next, the food packaging bag according to the second embodiment will be described with reference to FIG.

In the food packaging bag according to the second embodiment, a pair of sheets 19 and 22 (the front sheet 19 and the back sheet 22) are overlapped, one end and both sides are sealed, and the other end is an opening for containing food. 25. More specifically, the food packaging bag according to the second embodiment is formed by overlapping a pair of front sheet 19 and back sheet 22 having a substantially trapezoidal shape in plan view and sealing the upper side and the oblique side. is there.

A part of the front sheet 19 includes a plastic sheet 20 having a heat-welding property such as polyethylene or polypropylene, and the other part includes a paper sheet 21 having a paper quality. A part is a part corresponding to the front of the food to be packaged (a right-sided triangular slope of the food), that is, a part of a rectangular region with the narrowed seal part at the top, and the other part is A portion corresponding to the side of the food to be packed, that is, a portion of a right triangle region on both sides of the rectangular region, and is integrally formed by partially sticking a paper sheet 21 to a plastic sheet 20 having an overall shape. (In addition, the edges of the plastic sheet 20 and the paper sheet 21 are overlapped with each other, and, for example, the portions are sealed by attaching point seals at appropriate places, so that they are integrally joined to form an overall shape. It may be)

  The back sheet 22 is configured by adhering a plastic sheet 23 having heat-welding properties such as polyethylene and polypropylene and a paper sheet 24 having paper quality. The plastic sheet 23 is longer than the paper sheet 24 in the vertical distance of the food packaging bag, and when the both are pasted, one end of the plastic sheet 23 projects outward from the opening 25 to form an edge 26. A perforation 27 as a separating means is provided in the vicinity of the boundary between the opening 25 and the end edge 26 of the plastic sheet 23.

  The paper sheet 24 of the back sheet 22 is the same quality as the paper sheet 21 of the front sheet 19, and for example, a rayon paper formed in the form of paper or Japanese paper and a plastic film having heat welding properties such as polyethylene or polypropylene are laminated. A multilayer sheet, a single-layer sheet in which rayon paper is impregnated with a polyethylene resin or a polypropylene resin, or a nonwoven fabric such as a spunbond nonwoven fabric is used. Accordingly, the other part of the front sheet 19 and the back sheet 22 have a texture of paper, or have a whirling pattern such as Japanese paper, and the food packaging bag has a high-class feeling. It becomes.

  An inner sheet 28 is attached to the front sheet 19. The inner sheet 28 is the same quality as the plastic sheet 20 of the front sheet 19, and is point-sealed on the inner surface of the plastic sheet 20, for example, containing a sandwich of ingredients mixed with boiled eggs and mayonnaise, The ingredients do not adhere to the inner sheet 28 and the front sheet 19 is not soiled, so that the appearance is not impaired.

  On the other hand, as a cutting means for tearing the back sheet 22, the paper sheet 24 of the back sheet 22 is provided with two perforations 29, 29 parallel to each other from one end to the other end of the food packaging bag. In addition, a guide tape 30 narrower than the interval between the two perforations 29 and 29 is attached to the inside of the plastic sheet 23 of the back sheet 22. Further, in order to integrate the paper sheet 24 and the plastic sheet 23 so that the back sheet 22 can be easily torn, along the two perforations 29, 29, at appropriate intervals on both sides. A point seal (not shown) is applied.

  Further, a notch that reaches not only the paper sheet 24 but also the plastic sheet 23 of the back sheet 22 is made in the header portion (one end of the food packaging bag and the four sides are sealed) 31 32 is formed. The knob 32 is heat-sealed at the periphery of the cut, and the paper sheet 24 and the plastic sheet 23 are integrated in the periphery. That is, the back sheet 22 is surely torn by pulling down the knob 32 and the plastic sheet 23 and the paper sheet 24 are integrated.

Note that notches 33 and 33 are formed at both corners of the opening 25 of the food packaging bag to facilitate the opening operation of the opening 25.

The food packaging bag which concerns on 2nd embodiment consists of the above structure, and demonstrates the manufacturing method of this food packaging bag next.

  In the manufacturing method shown in FIG. 7, a process A for forming a sheet band (hereinafter referred to as “front sheet band”) 34 as a base of the front sheet 19 and a sheet band (hereinafter referred to as a plastic sheet 23 of the back sheet 22). , A process B in which the perforations 27 are continuously provided at both ends of the back surface 38, a process C in which the guide tape 30 is adhered, and a sheet band (hereinafter referred to as the paper sheet 24 of the back sheet 22). Step D in which perforations 29 are provided in the "back paper quality sheet band" 39), and the back plastic sheet band 38 and the back paper quality sheet band 39 are appropriately integrated by a point seal to form a sheet band (the back sheet 22) (Hereinafter, referred to as “back sheet band”) 37, and then the step E of forming the tab 32, and one end of the food packaging bag among the superposed front sheet band 34 and back sheet band 37. It comprises a process F for sealing the corresponding parts, a process G for sealing the parts corresponding to both ends of the food packaging bag, and a process H for cutting and separating each food packaging bag. The notch 33 is formed.

In the process A, a sheet band (hereinafter referred to as “front plastic sheet band”) 35 as a base of the plastic sheet 20 of the front sheet 19 and a sheet band (hereinafter referred to as “cover sheet quality” of the paper sheet 21 of the front sheet 19). Each sheet 36) is fed out from the raw roll, and the cover sheet sheet strip 36 is cut into a predetermined length by the cutter 15 (see FIG. 4) as in the first embodiment. The front sheet band 34 is formed by bonding a rectangular paper sheet to a long plastic sheet band by sealing with a heat seal bar (not shown) in a state of being overlapped with a corresponding portion of the sheet band 35.

  In step B, the back plastic sheet band 38 is unwound from the original roll, and perforations 27 as separation means are used at both ends using a rotary cutter (not shown) in which blades are provided at regular intervals on the circumference. Put two in parallel. The back plastic sheet band 38 is wider than the other sheet bands in order to secure a portion to be the end edge portion 26, and the back plastic sheet band 38 is overlapped with other sheet bands. It arrange | positions so that both ends of may protrude from other sheet | seat strips. In step C, the guide tape 30 is attached to the back plastic sheet band 38.

  In step D, the backing paper sheet strip 39 is unwound from the original roll, and a perforation 29 as cutting means is inserted by a cutter (not shown). In step E, the end piece located on one end side of the food packaging bag of the guide tape 30 or the perforation 29 is cut with a cutter (not shown) to form the knob 32. It should be noted that the position where the guide tape 30 is attached, the position of the perforations 29 and the position where the knobs 32 are formed are alternately displaced in the width direction of the back sheet band 37 because the food packaging bags are alternately formed in the opposite direction. Because.

  In step F, the plastic sheet of the front sheet band 34 and the plastic sheet and paper sheet of the back sheet band 37 are sealed at one end portion of the front sheet band 34 by the heat seal bar 40. In step G, the paper sheet of the front sheet band 34 and the plastic sheet and paper sheet of the back sheet band 37 are sealed by the heat seal bar 41 in a diagonal line shape of the paper sheet. By these two steps F and G, the opening portions 25 for containing food are alternately formed in the width direction of the sheet bands 34 and 37 and gradually narrow from the opening portion 25 in the width direction of the sheet bands 34 and 37. A food packaging bag is defined.

  In step H, the portion sealed at the heat seal bar 41 and the portion on the header portion 31 side of both ends of the sheet band are cut with a cutter (not shown). As a result, the food packaging bag is cut in a state where the paper sheet of the front sheet band 19 is divided into two substantially diagonal lines. Further, the plastic sheet 23 of the back sheet 22 protrudes outside the opening portion 25 at both ends of the sheet band, and an edge portion 26 is formed.

  After that, the separated food packaging bags are stacked in order, and a so-called block seal for fusing the edge portions 26 by heat is applied every predetermined number so that the back sheets 22 of the food packaging bags are partially integrated. It is done. And the notch 33 is formed in the both corner | angular part of the opening part 25 of the integrated food packaging bag using a cutter (not shown), and the food packaging bag shown in FIG. 8 is completed. It should be noted that this order may be changed back and forth, and the cutout 33 may be formed first, and then stacked to provide a block seal.

  The food packaging bag according to the second embodiment is manufactured by the above manufacturing method, and thereafter, food such as a sandwich is accommodated in the food manufacturing process. That is, the integrated food packaging bag is installed so that the opening 25 faces the blower (not shown), and the wind in the direction of the arrow shown in FIG. 8 is sent. At this time, since the food packaging bag is integrated, the back sheet 22 of the food packaging bag is not turned up by blowing. On the other hand, the front sheet 19 is sealed at both side ends, but notches 33 are formed at both corners, and the front sheet end 19a, which is the vicinity of the opening 25 of the front sheet 19, is formed by both side ends from the width direction. Since it is in a state of not being fixed, the front sheet end portion 19a can easily catch the wind. For this reason, the front sheet | seat edge part 19a of the food packaging bag in an uppermost position is turned up by ventilation, and the opening part 25 opens. And the wind is still sent under the turned up front sheet end 19a, and the food packaging bag, that is, the space between the front sheet 19 and the back sheet 22 swells to a size that allows sandwiches to be inserted. Can do. When food such as a sandwich is contained in the food packaging bag, the food packaging bag is finally separated from the integrated food packaging bag from the perforation 27 portion, and the food packaging located below the separated food packaging bag. A bag will be located in the uppermost part and the food accommodation operation | movement similar to the above will be performed with respect to this food packaging bag. By repeating this series of operations, the food is sequentially stored in the food packaging bag.

According to the food packaging bag according to the second embodiment, the plastic sheet 20 is used to make a part of the front sheet 19 (a part corresponding to the front of the food) transparent, so that The type, quality, freshness, etc.) can be confirmed directly with eyes, and the food is the other part of the front sheet 19 (part corresponding to the side of the food) and the paper quality of the back sheet 22 which is an opaque paper quality sheet 21 Since it is covered with the sheet 24, it does not become fully visible. Therefore, coupled with the sheet being of paper quality, a solid feeling increases and a high-class feeling is provided.

  In addition, since the edge portion 26 is provided, a block seal can be applied even to a food packaging bag using a paper sheet to enhance a high-class feeling. It is possible to perform food storage operations quickly and efficiently. Therefore, it can also be used when it is necessary to produce foods such as sandwiches in large quantities.

In addition, the food packaging bag which concerns on this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, the transparent sheet used for visual recognition is not essential to be formed on the front sheet 1, and may be formed on the back sheet 4. Moreover, as shown in FIG. 9 or FIG. 11, the transparent sheet 2 may be used corresponding to a part of the front of the food instead of using the transparent sheet corresponding to the entire front of the food. If the food packaging bag shown in FIG. 9 is described in more detail, the same paper quality sheet 3 as the portion corresponding to the side of the food is used for the header 8 and the portion corresponding to the lower portion of the front of the food. As shown in FIG. 10, the front sheet band 42 which is the base of the front sheet 1 is fed out of the paper sheet band 43 from the original roll, and the corresponding portion of the transparent sheet (plastic sheet) is removed, and the portion (window 43a) is drawn. It can be obtained by sticking a transparent sheet.

Furthermore, if the food packaging bag shown in FIG. 11 is demonstrated in detail, parts other than the window part 45a are provided with a paper quality sheet | seat. As the front sheet band 44 that is the basis of the front sheet 19, a sheet sheet that has been processed in advance and formed into a completely integrated sheet band can be used. That is, as shown in FIG. 12, the front sheet band 44 is fed out from the raw roll and is partially punched to form the transparent window 45a, and then the paper sheet band 45 and the transparent sheet 46 are bonded to each other. Can be obtained by sticking all over.

(A) is a top view of the food packaging bag which concerns on 1st embodiment, (b) shows the AA sectional view taken on the line (a). The schematic perspective view of the manufacturing process (1st example) of the food packaging bag which concerns on the embodiment is shown. The schematic perspective view of the manufacturing process (2nd example) of the food packaging bag which concerns on the embodiment is shown. The one part schematic side view of the manufacturing process of the food packaging bag which concerns on the embodiment is shown. The perspective view of the package body of the food packaging bag which concerns on the embodiment is shown. (A) is a top view of the food packaging bag which concerns on 2nd embodiment, (b) shows the BB sectional drawing of (a). The schematic perspective view of the manufacturing process of the food packaging bag which concerns on the embodiment is shown. The outline perspective view of the state where the food packaging bag concerning the embodiment was given a block seal is shown. The perspective view of the package of the food packaging bag which concerns on other embodiment is shown. The one part schematic side view of the manufacturing process of the food packaging bag which concerns on said other embodiment is shown. Furthermore, the perspective view of the package body of the food packaging bag which concerns on other embodiment is shown. The one part schematic side view of the manufacturing process of the food packaging bag which concerns on said other embodiment is shown.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Front sheet, 2 ... Plastic sheet, 3 ... Paper sheet, 4 ... Back sheet, 5 ... Opening part, 6 ... Inner sheet, 7 ... Cut tape, 8 ... Header part, 9 ... Picking piece, 11 ... Front sheet belt , 12 ... plastic sheet belt, 13 ... paper sheet belt, 14 ... back sheet belt, 19 ... front sheet, 20 ... plastic sheet, 21 ... paper sheet, 22 ... back sheet, 23 ... plastic sheet, 24 ... paper sheet, 25 ... Opening, 26 ... Edge, 27 ... Perforation, 28 ... Inner sheet, 29 ... Perforation, 30 ... Guide tape, 31 ... Header, 32 ... Pinch, 34 ... Front sheet belt, 35 ... Front plastic Sheet band, 36 ... Cover sheet sheet, 37 ... Back sheet band, 38 ... Back plastic sheet band, 39 ... Back sheet sheet band, 42 ... Front sheet band, 43 ... Paper sheet band, 43a ... Window, 44 Table seat belt, 45 ... paper quality sheet band, 45a ... window

Claims (8)

In a food packaging bag such as a sandwich that overlaps a pair of sheets, seals one end and both sides, and the other end is an opening for containing food, a part of one sheet is a plastic sheet, A food packaging bag for sandwiches or the like, wherein the other part of the one sheet and the other sheet are made of a paper quality sheet or provided with a paper quality sheet. The pair of sheets has a shape that gradually becomes narrower from the other end side to the one end side, and a part of the one sheet is at least a front surface of the food when the food is contained in the one sheet. The food packaging bag for sandwiches or the like according to claim 1, which is a portion corresponding to. The pair of sheets has a shape that gradually becomes narrower from the other end side to the one end side, and a part of the one sheet is a front surface of the food when the food is contained in the one sheet. The food packaging bag for sandwiches and the like according to claim 1, which is a part corresponding to a part. The other sheet is formed by joining a paper sheet to a plastic sheet, and the other end of the plastic sheet out of the other sheet protrudes outside the other sheet and the one sheet. A food packaging bag such as a sandwich according to any one of 3 above. In a state where a pair of long sheet belts are drawn out and overlapped, a step of sealing appropriate portions of the sheet belts to delimit each food packaging bag and a step of cutting or fusing to separate each food packaging bag are provided. In the method for manufacturing a food packaging bag such as a sandwich, one sheet band is partly made of a plastic sheet and the other part is made of a paper-like sheet to be attached to each food-packaging bag, or comprises a paper-like sheet And the other sheet band is made of a paper sheet or configured with a paper sheet, and one sheet band is a plastic sheet and a paper quality that are individually supplied. A method for producing a food packaging bag such as a sandwich, characterized in that the product is produced by joining sheets. In the sealing step, the sheet band is formed such that the openings for accommodating the food are alternately formed in the width direction of the sheet band, and the width gradually decreases from the opening for accommodating the food toward the width direction of the sheet band. Including a step of sealing obliquely with respect to the width direction, wherein the cutting or fusing step cuts or melts a portion sealed obliquely by the sealing step, and the one sheet band is a long plastic The manufacturing method of food packaging bags, such as a sandwich, according to claim 5, wherein the sheet is manufactured by overlapping and joining a rectangular paper sheet corresponding to a region sealed obliquely by a sealing step on the sheet band. In the sealing step, the sheet band is formed such that the openings for accommodating the food are alternately formed in the width direction of the sheet band, and the width gradually decreases from the opening for accommodating the food toward the width direction of the sheet band. Including a step of sealing obliquely with respect to the width direction of the sheet, wherein the cutting or fusing step cuts or melts a portion sealed obliquely by the sealing step, and the one sheet band is inclined by the sealing step. 6. A food product such as a sandwich according to claim 5, wherein the sheet is manufactured by alternately joining a rectangular paper sheet corresponding to a region to be sealed and a rectangular plastic sheet corresponding to another region in the longitudinal direction of the sheet band. A method of manufacturing a packaging bag. The other sheet band is manufactured by joining the paper sheet to a plastic sheet wider than the paper sheet, and the sealing step includes a pair of sheets, both ends of the plastic sheet being the paper sheet and one of the sheets. 8. The method according to claim 6, further comprising a step of superimposing the sheet strips so as to protrude in the width direction, wherein the cutting or fusing step further includes a step of forming separation means along the longitudinal direction of the sheet strip in the protruding portion. The manufacturing method of food packaging bags, such as a sandwich.

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