JPH078238U - Sandwich bag - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a packaging bag for sandwiches having a triangular shape, and to provide a packaging bag in which any plastic stretched film can be used and which can be opened securely, easily and beautifully. It is intended for. [Structure] When manufacturing a bag main body by welding the bottom side of two isosceles trapezoidal stretched films having outer edges extended to the upper side or one side oblique side and the other three sides excluding the outer edges, to produce a bag main body A cut tape that crosses the upper film longitudinally or transversely through the part is adhered, and a cut piece is provided in the upper film and / or the lower film along both sides of the cut tape at the outer edge to form a pulling piece. Is.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a packaging bag for sandwiches, which is suitable for packaging a triangular sandwich, and in particular can be opened reliably and easily.

[0002]

[Prior art]

 As a packaging bag for this type of sandwich, as shown in FIG. 6, the upper and lower oblique sides of two upper and lower plastic films (a) and (b) cut into isosceles trapezoids of approximately equal size are welded (c). ) And the bag is mainly used, and at least the upper film (a) uses a plastic film that has been uniaxially stretched beforehand, so that there is a certain direction for tearing (tearing) when opening (in this case, the same figure). Is known (see Japanese Utility Model Publication No. 2-32587).

More specifically, in producing the bag main body, the two films (a) and (b) are slightly shifted in the front-rear direction to be polymerized with each other to form an outer edge (d) and a bottom edge provided on the upper side. Welded three sides except for, and provided two notches (e) toward the tearing direction on the outer edge (d) on the weld (c) line on the upper side, and made a tension piece (f) between these two notches. is there.

As shown in FIG. 7, the sandwich packaging bag having the above-described structure accommodates a right triangle sandwich (s) having a thickness corresponding to the welding length of the upper side to the opening (g) of the bottom side, and then opening the opening. The surplus part [see (h) in FIG. 6] is folded and sealed. In this case, the pulling piece (f) is directed to the center of the slope (li) of the sandwich (s). From the above, when opening, if the pulling piece (f) of the upper film (b) that protrudes somewhat from the lower film (b) is grasped with your fingers and pulled up in the direction of the slope, the tearing direction of the upper film causes this The part of the film can be broken at a certain width.

[0005]

[Problems to be solved by the device]

 According to the above-mentioned conventional sandwich packaging bag, as a means for facilitating gripping of the pulling piece (f) with the fingertips, the upper and lower films (a) and (b) are polymerized by shifting the films forward and backward by a certain amount. Therefore, the three sides except the bottom have to be welded, and a lot of manual work is required for the process, which is a big problem in terms of production cost. Since the condition was to use a uniaxially stretched film, although the tearing directionality could be obtained compared to biaxially stretched film, etc., it not only sacrificed the strength and transparency of the film, but also often used a tensile strip (f). Is blocked by the welding line (c) on the upper side of the crossing, or the tension piece is cut at this part, or even if the welding line is crossed, the tearing of the film is interrupted and the desired complete opening (medium) The Sandwich has collapsed In which problems were also seen as easily retrievable state) was Egataka' not.

[0006]

[Means for Solving the Problems]

 The present invention, which has been made in light of the above-mentioned circumstances, uses a multi-axially stretched film as a plastic film used for this type of packaging bag, and it is a sandwich that can be opened reliably, easily and beautifully. The purpose is to provide a packaging bag.

That is, when the bottom of two stretched films cut into an isosceles trapezoid and the outer edge provided on the upper side are left and the other three sides are welded to produce a bag main body, A means of forming a pulling piece by cutting along the center line and adhering a narrow cut tape extending to the outer edge and forming cuts along both sides of the cut tape at the outer edge part is formed.

[0008] Furthermore, at least one side of the upper film has an outer edge portion extended and cut to cut the two isosceles trapezoidal stretched films, and the bottom side is welded to the other three sides except the outer edge. When manufacturing the main body, while adhering a narrow cut tape that extends to the outer edge part across the hypotenuses on both sides of the upper film, along the both sides of the cut tape of the upper film and / or the lower film at the outer edge part. It also uses a means of making a notch to form a pull piece.

Further, only the lower film that overlaps with the above-mentioned pulling piece is cut off, or all of the lower film that constitutes the outer edge portion is cut off, or all of the upper and lower films other than the pulling piece at the outer edge portion are cut off. Then, either means of independently projecting only the pulling piece was used.

[0010]

[Action]

 In the packaging bag of the present invention having the above-mentioned configuration, the cut surface is not limited to the uniaxially stretched film as in the past because the cut tape is used, and a general stretched film including biaxial stretching can be freely used at the same time. The pulling piece including the cut tape has a special effect that the complete opening can be surely and easily performed without being obstructed by the welding line when opening.

In addition, a part or all of the lower film that is polymerized with the above-mentioned pulling piece at the outer edge portion, or the whole of the upper and lower films except the pulling piece at the outer edge portion is cut off to make the pulling piece independent. When opening, it is easy to grab with your fingertips.

Further, with the above configuration, the present invention also has a production effect that the production process of the packaging bag including the cut tape can be performed mechanically continuously.

[0013]

【Example】

 Hereinafter, the structure of the sandwich packaging bag of the present invention will be described in more detail with reference to a few examples. Reference numerals 1 and 2 in FIGS. 1 and 2 denote the isosceles trapezoids having the same upper and lower shapes. Of the stretched plastic film, 3 is a cut tape provided on the center line of the upper film 1, and 4 is an upper welding line for joining the upper and lower films, leaving an outer edge portion 5 extending to the upper side, 6 and 6. Is a welding line of the upper and lower films on both oblique sides, and 7 is a pulling piece formed by notches 8 provided at both sides of the cut tape 4 at the outer edge portion 5, and the notches 8 8. May be provided only on the upper film 1 or may be provided so as to penetrate the lower film 2.

In FIGS. 1 and 3, numeral 9 is an opening at the bottom, and numeral 10 shown by a chain line is a folded line for inserting the sandwich switch (s) through the opening and folding it to seal the contents. Show.

Next, FIGS. 3 and 4 show another embodiment of the present invention, in which the reference numerals 1 ′ and 2 ′ in the drawing are the upper and lower two sheets cut into an isosceles trapezoidal shape as in the previous embodiment. 5'is an outer edge portion extending at least at a position near the fold line 10 on one side of the upper film 1 ', and 3'is a portion extending from the outer edge portion 5'to the other side oblique side. 4'is a welding tape for joining the upper and lower films 1'and 2 ', and 6'is a welding line for joining the upper and lower films on both sides of the oblique sides, and 7'is an outer edge portion 5 It is a tensile piece formed by cuts 8 ', 8'provided on both sides of the cut tape 3'in', and the cuts 8 ', 8'also have outer edges 5'on the lower film 2'. In some cases, it may be provided only on the upper film 1'or through the lower film 2 '. Be free.

In the two embodiments described above, the pulling pieces 7, 7 ′ provided on the respective outer edge portions 5 or 5 ′ have the lower films 2.2 located on the back side of the pulling pieces in any case. A part (only the contact part with the pulling piece) or all of it is cut off beforehand (see [A] in FIG. 5), or the upper and lower films other than the pulling piece 7.7 'at the outer edge portion. All of the above are cut off (see FIG. 5B) to leave the pulling piece in an independent state, which makes it very easy to grasp the pulling piece when opening.

[0017]

[Effect of device]

 As described above, according to the sandwich packaging bag of the present invention, by using the cut tape, a general stretched film which is superior in strength and transparency as a packaging material can be arbitrarily adopted and can be opened by the cut tape. Because of this, the breakage of the film will not be interrupted, and the remarkable effect that it will always be cut reliably and beautifully and complete opening will be achieved.

Further, since the cut tape is used, it becomes easy to understand the gripping position and the tearing direction of the pulling piece at the time of opening, and it is not possible to pull in the opposite direction unlike the conventional product, and at the same time, the pulling piece is independent. Since the product molded in such a state can be easily grasped with a fingertip, it has a great practical effect that it can be opened without fail by ordinary users as well as infants without difficulty.

In addition, according to the configuration of the present invention, when the cut tape is adhered to the upper film, the adhesive cut tape is continuously attached to a predetermined position of the upper film that is continuously rewound and proceeds. It is only necessary to supply and crimp it, and since the entire process such as cutting and welding of the upper and lower films can be mechanically automated as a series of flow work, the production cost of this kind of packaging bag can be significantly reduced. It brings many benefits that cannot be expected from conventional sandwich packaging bags.

[Brief description of drawings]

FIG. 1 is a plan view of the sandwich packaging bag of the present invention.

FIG. 2 is a perspective view showing a state when the package is opened.

FIG. 3 is a plan view showing another embodiment of the packaging bag of the present invention.

FIG. 4 is a perspective view showing a state when the same is opened.

FIG. 5 is a perspective view of the back of the packaging bag showing each embodiment of the pulling piece.

FIG. 6 is a plan view of a conventional sandwich packaging bag.

FIG. 7 is a perspective view showing a state in which a conventional packaging bag is opened.

[Explanation of symbols]

 1.1 'Upper film 2.2' Lower film 3.3 'Cut tape 4.4' Upper edge welding line 5.5 'Outer edge 6.6' Weld lines on both oblique sides 7.7 'Pulling piece 8.8' Notch 9 Opening 10 Folded line

Claims (4)

[Scope of utility model registration request] 1. When a bag main body is produced by welding two sides of two isosceles trapezoidal stretched films cut into equal size to the bottom side and the three sides with the outer edge portion on the upper side being welded, on the center line of the upper film. A bag for sandwiches, characterized in that a pulling piece is formed by cutting the upper part and / or the lower film along both sides of the cut tape at the outer edge and adhering a narrow cut tape 2. A bag main body in which at least one isosceles trapezoidal stretched film, which is cut by forming an outer edge portion on one oblique side of the upper film, is welded to the bottom side and the other three sides excluding the outer edge portion. In making the above, while adhering the cut tape across the outer film through the outer edge portion to reach the hypotenuse on the other side, the cut film is adhered to the upper film and / or the lower film along both sides of the cut tape at the outer edge portion. A packaging bag for sandwiches, characterized in that a notch is provided to form a pulling piece. 3. The packaging bag for sandwiches according to claim 1 or 2, wherein a part or the whole of the lower film which overlaps with the pulling piece at the outer edge portion is cut off. 4. The packaging bag for sandwiches according to claim 1, wherein the upper and lower films other than the pulling pieces on the outer edge portion are cut off to make the pulling pieces independent.