JP3035904U - Packaging bag and package - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a packaging bag in which a produced packaging bag can be reliably used without any problem and which never causes a production loss, and a packaging body using the packaging bag. It is an object of the present invention to provide a packaging body that can be easily opened at the time of unsealing, as in the conventional case. SOLUTION: A film or tear guide tape 13 constituting a packaging bag is laminated with a weak adhesive layer 15 having an adhesive strength of 100 to 200 gf / 15 mm on the inner surface thereof, and is provided with an adhesive function itself. Are configured.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention mainly relates to improvement of a packaging bag and a packaging body suitable for sandwich packaging and the like.

[0002]

[Prior art]

 Conventionally, as a packaging bag for sandwiches and the like, there is, for example, the one disclosed in Japanese Utility Model Application No. 6-61757.

In the packaging bag, both side edges of a front film and a back film (for convenience) are sealed, an opening is formed on one end side of both films, and the other end side is tapered, and It consists of a bag body having a seal part closed at the end, and a protruding piece in which the front film is extended from the seal part of both the front and back films in a long integrated manner, and extends from the front film. A cut line serving as a tear starting point that can be opened toward the bag body side is provided on the formed protruding piece to provide a knob piece, and the protruding piece on the side where the knob piece is provided is attached to the bag body. A strip-shaped unsealing tape serving as an unsealing guide for the bag body is provided on the inner surface side.

A sandwich or the like is inserted into the packaging bag having the above structure through the opening, and the opening is closed to complete the package.

As shown in FIG. 5, the sealing portion of the packaging bag is usually preliminarily provided with various solvents on the inner surface of the film on the side where the opening tape is not provided, as shown in FIG. The adhesive is part-coated, and the part is heat-sealed for molding.

[0006]

[Problems to be solved by the device]

 However, in the packaging bag, as described above, since the adhesive using a solvent is part-coated on the seal portion, the smell of the solvent may remain. However, there is a possibility that the bag may be selected as an unusable bag by being bounced by the quality inspection that is usually performed before the packaging.

[0007] In the above case, not only does the worker have an aversion, but the worker has to re-manufacture that much, resulting in an increase in wasteful production cost, which is a great loss of manufacturing and human resources. It was

The present invention was devised as a countermeasure in the case of assuming the above-mentioned case, and the manufactured packaging bag can be reliably used without any problem and never causes a production loss. An object of the present invention is to provide a packaging bag and to provide a packaging body that can be easily opened at the time of opening the packaging body using the packaging bag, as in the conventional case.

[0009]

[Means for Solving the Problems]

 The present invention takes the following technical means in order to solve the above problems. That is, the first technical means is that both side edges 3 and 3 of the front film 1 and the back film 2 are sealed, and an opening 4 is provided on one end side of the both films 1 and 2, and the other end is formed. From a bag main body 6 having a taper side and having a seal portion 5 closed at the other end, and projecting pieces 7 and 8 integrally extended from the seal portion 5 of the front and back films 1 and 2. In the packaging bag in which the one cutting piece 7 is provided with the cutting line 10 serving as a tear starting point that can be opened toward the bag body 6, at least the portion of the seal portion 5 to be cleaved is previously shown. It is composed of a weak adhesive layer 15 laminated on the inner surface of the film 1 or the back film 2 and having an adhesive strength of 100 to 200 gf / 15 mm.

The second technical means is that both edges 3 and 3 of the front film 1 and the back film 2 are sealed, and an opening 4 is provided on one end side of the both films 1 and 2. , A bag body 6 having a taper portion on the other end side and having a seal portion 5 closed at the other end, and a projecting piece 7, which is integrally extended from the seal portion 5 of the front and back films 1, 2. 8 is provided with a cutting line 10 serving as a starting point of tearing that can be opened toward the bag body 6, and the strip 7 extends from the projecting piece 7 to the bag body 6. In the packaging bag in which the tearing guide tape 13 of FIG. 2 is provided on the inner surface side of the front film 1 or the back film 2, at least the portion of the seal portion 5 to be torn is laminated on the inner surface of the tearing guide tape 13 in advance. In addition, the weak adhesive layer 15 has an adhesive strength of 100 to 200 gf / 15 mm.

As the packaging bag of the present invention, one in which a weak adhesive layer 15 having an adhesive strength of 100 to 200 gf / 15 mm is laminated on the inner surface of the film 1 or 2 or the tear guide tape 13 constituting the packaging bag is used. However, since the bag itself has an adhesive function, at least the portion of the sealing portion 5 of the bag to be cleaved is the weak adhesive layer 15 provided on the film 1, 2 or the cleaving guide tape 13. Since it is molded by the above method, it is possible to seal the seal portion 5 without using any conventional adhesive containing a solvent, and therefore there is no possibility that the seal portion 5 will be recovered during an inspection or the like. The produced packaging bag can be reliably packaged as a package.

[0012]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the packaging bag of the present invention has a pair of packaging films having substantially trapezoidal shapes (for convenience, these two films are referred to as a front film 1 and a back film 2) on both sides. A bag body constructed by sealing the edges 3 and 3 by heat welding, and forming the opening 4 on one end side (the long lower side of the trapezoid) and the sealing part 5 on the other side (the short lower side of the trapezoid). 6 and projecting pieces 7 and 8 extending integrally from the seal portion 5 to the front film 1 and the back film 2 and having substantially the same length.

The peripheral portions 9 of the projecting pieces 7 and 8 are also sealed by heat welding, and the projecting piece 7 on the front film 1 side can be opened from the projecting piece 7 toward the bag body 6. A semicircular cutting line 10 serving as a cleavage starting point is bored with the sealing portion 5 as an end portion 11, and the inside thereof is formed as a knob 12.

Further, as shown in FIGS. 1 and 2, a strip-shaped tear guide tape 13 is attached to the inner surface of the front film 1 from the protruding piece 7 to the bag body 6 as shown in FIGS. The guide tape 13 is guided by grasping and pulling the tab 11 so that the surface film 1 can be cleaved.

The tear guide tape 13 may be formed by thinly coating or co-extruding ethylene on a polypropylene film, or by forming a copolymer resin of polypropylene film and ethylene by a T-die method. By using it, the heat-sealable weak adhesive layer 15 (the thickness of which is preferably about 5 μm or less) is formed on the surface thereof.

Therefore, when heat sealing is performed on the position of the seal portion 5 with a heat bar or the like from above, the tear guide tape 13 itself has a weak adhesive force of about 100 to 200 gf / 15 mm and has an adhesive strength of about 100 to 200 gf / 15 mm. The portion to be cleaved of the seal portion 5 is lightly adhered.

Using the packaging bag configured as described above, a package such as a sandwich is inserted through the opening 4 and the opening 4 is closed to form the package.

When the package is opened and the packaged product is taken out, the gripping piece 12 is gripped and pulled so that the weak adhesive layer 15 is easily peeled off and the tear guide tape 13 Guides the cleavage of the film. At this time, since the seal portion 5 is composed of the weak adhesive layer 15, the guide tape 13 can be opened smoothly without being caught or cut by the seal portion 5.

Any film may be used as the film forming the packaging bag, but a film having a function of preventing evaporation of moisture and a dustproof function is preferable, and a directional film that is easily torn in the tearing direction, for example, a uniaxial film. A stretched film such as a stretched polypropylene (CPP) film is used, and the direction of easy tearing and the direction of tearing are matched to each other, and as shown in FIGS. If the tearing guide tape 13 is not provided, the unsealing can be performed by forming the tabs 12 and forming the tabs 12 between them.

In the case described above, at least the surface film 1 is formed by thinly coating or co-extruding ethylene or the like on the inner surface of the surface of the surface film 1 in the same manner as the cleavage guide tape 13 to form the weak adhesive layer 15. If they are laminated, the weak adhesive layer 15 is lightly adhered to the back film 2 by heat-sealing the seal portions 5 of the polymerized front and back films 1 and 2.

As described above, at least the part to be cleaved of the seal part 5 is preliminarily laminated on the cleaving guide tape 13 or at least one of the front and back films 1 (2) and has a weak adhesive strength of 100 to 200 gf / 15 mm. Since it is composed of the adhesive layer 15, it is possible to seal the sealing portion 5 without using any conventional adhesive containing a solvent, and therefore, it is possible to recover it during an in-process inspection or the like. There is no such thing, and the manufactured packaging bag can be surely packaged as a package.

As shown in FIG. 3, the protruding piece 7 extending from the surface film 1 may be provided longer, or conversely, the protruding piece 8 extending from the surface film 2 may be provided longer. Good, and not only the opening 4 part of the bag body 6 is made flush, but if the film on the front side and the back side is made longer and shifted, it can be done smoothly when inserting the packaged item. .

Further, the packaged object is not limited to sandwiches, and various foods such as processed rice foods may be used, and the type thereof is not limited.

Further, in the above-described embodiment, the bag body 6 is formed into a substantially trapezoidal shape in accordance with the sandwich form, but the shape of the bag body 6 is not limited to this. It can be arbitrarily changed according to the type of food to be packaged, and the point is that it has a predetermined opening 4, and by folding the opening 4, it is possible to store the items to be stored inside. Then, the shape and size of the packaging bag are not limited.

[0026]

[Effect of the invention]

 As described above, the packaging bag of the present invention is formed by laminating a weak adhesive layer having an adhesive strength of 100 to 200 gf / 15 mm on the inner surface of the film or cleavage guide tape constituting the packaging bag. Since the bag itself has an adhesive function, at least the part of the seal portion of the bag that is to be cleaved is formed by the weak adhesive layer provided on the film or the cleaving guide tape. The sealing part can be sealed without using any adhesive containing a different solvent. Therefore, there is no possibility that the sealing part will be recovered during the inspection, etc. It can be packaged as

When the package is unsealed and the packaged product is taken out, the seal line is a weak adhesive layer having an adhesive strength of 100 to 200 gf / 15 mm simply by pulling with the cutting line as the cleavage starting point. Thus, it can be peeled off easily, and therefore can be smoothly opened without being caught by the seal portion and without being cut off on the way.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is an end view taken along line AA of FIG. 1;

FIG. 3 is a front view showing another embodiment of the present invention.

FIG. 4 is an end view taken along line BB of FIG. 3;

FIG. 5 is an end view showing a conventional example.

[Explanation of symbols]

 1 Front Film 2 Back Film 4 Opening 5 Sealing Part 6 Bag Body 7 Projection of Front Film 8 Projection of Back Film 10 Cutting Line 12 Picking Piece 13 Opening Guide Tape 15 Weak Adhesive Layer

Claims (3)

[Utility model registration claims] 1. The both side edges (3) and (3) of the front film (1) and the back film (2) are sealed and the both films (1) and (3) are sealed.
A bag body (6) having an opening (4) at one end of (2), a taper at the other end, and a sealing part (5) closed at the other end, and the front and back films Seal part of (1), (2)
(5) A projecting piece (7), (8) that is integrally extended from the (5), and one of the projecting pieces (7) is a cutting start point that can be opened toward the bag body (6). In the packaging bag provided with the line (10), at least the part of the seal part (5) to be cleaved is previously the front film (1) or the back film (2).
A packaging bag, characterized by comprising a weak adhesive layer (15) laminated on the inner surface of and having an adhesive strength of 100 to 200 gf / 15 mm. 2. Both side edges (3) and (3) of the front film (1) and the back film (2) are sealed and the both films (1) and (3) are sealed.
A bag body (6) having an opening (4) at one end of (2), a taper at the other end, and a sealing part (5) closed at the other end, and the front and back films Seal part of (1), (2)
(5) A projecting piece (7), (8) that is integrally extended from the (5), and one of the projecting pieces (7) is a cutting start point that can be opened toward the bag body (6). A line (10) is provided, and a strip-shaped tear guide tape (13) extends from the projecting piece (7) to the bag body (6) and the inner surface of the front film (1) or the back film (2). In the packaging bag provided on the side, at least the part of the seal part (5) to be cleaved is laminated in advance on the inner surface of the cleaving guide tape (13), and has an adhesive strength.
A packaging bag comprising a weak adhesive layer (15) of 100 to 200 gf / 15 mm. 3. A package in which a packaged article is inserted through the opening (4) of the packaging bag according to claim 1 or 2, and the opening (4) is closed.