JP3032245U - Easy tear tearable liquid flowable packaging bag - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a means for easily tearing the opening of a liquid flowable material packaging bag and a filling package. SOLUTION: Two rectangular plastic films are polymerized, and the upper, lower, left and right four sides of the plastic film are welded together except the liquid fluid filling port of the upper side to form a bag. A liquid flowable material outflow passage 4 composed of a non-welded portion is formed in a bent shape in the upper side welding portion 3 excluding the flowable fluid filling port portion 2, and a base end 5 of the liquid flowable fluid outflow passage is communicated with the bag. Then, in the liquid fluid packaging bag in which the closed tip 6 of the liquid fluid outflow passage 4 is arranged in the corner portion 7 of the upper welded portion 3, a pulling portion 8 that can be pulled by being sandwiched by a human thumb and forefinger. Was continuously provided outside the corner of the welded portion on the upper side.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to an easily tearable liquid flowable material packaging bag and a liquid fluidity material packaged in the packaging bag. The packaging bag of the present invention is a liquid flow of miso, liquid soup, soy sauce, sauce, chili oil, buckwheat sauce, udon soup, cream, coffee, juice, mayonnaise, milk, wine, sake, natural water, mineral water, chemicals, etc. It is used for the packaging of natural products.

[0002]

[Prior art]

 In recent years, plastic film packaging bags containing such liquid flowable substances have been widely used, but the applicant has filled the liquid flowable substances into the packaging bags and handed them to consumers. In addition to allowing the consumer to open it with scissors at the time of opening, a passage for squeezing out the content is provided, and after squeezing out the necessary amount of content, the content does not flow out unless the content in the packaging bag is pressed. We have developed bags and manufactured and sold them. However, since it is necessary to use scissors to open the packaging bag, it is inconvenient, and the direction of cutting to open the bag is to cut the corner of the upper side of the bag diagonally, so that you can easily and diagonally by hand. It was difficult to cut.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide a liquid flowable material packaging bag having a structure that can be easily opened by sandwiching it with a thumb and an index finger without using scissors.

[0004]

[Means for Solving the Problems]

 The inventor of the present invention has found that the corners of the upper side of the liquid flowable material packaging bag conventionally manufactured and sold by the applicant's company are right-angled isosceles triangles. Since the force does not act strongly in the direction of cutting diagonally, I thought that it is not possible to tear diagonally, and if the shape of the corners is changed to a shape where tear stress is easily applied, the problem of the present invention can be solved. We were confident and conducted a number of experiments to prove that the tensile portion of a specific shape was effective, and completed the present invention. That is, the present invention is to form a bag by polymerizing two rectangular plastic films, and excluding the upper, lower, left and right sides of the plastic film except the liquid fluid filling port on the upper side to form a bag. A liquid flowable substance outflow passage consisting of a non-welded portion is formed in a bent shape in the welded portion on the upper side excluding the liquid flowable substance filling port portion, and the base end of the liquid flowable substance outflow passage is communicated with the bag, In a liquid flowable material packaging bag in which the closed tip of the liquid flowable material outflow passage is arranged at the corner of the welded portion on the upper side, the liquid flowable material packaging bag is continuous to the outside of the corner of the welded portion on the upper side. And an easily tearable openable liquid flowable material packaging bag having a pulling portion having an arbitrary shape that can be sandwiched between and pulled by an index finger.

[0005]

[Embodiment of device]

 Here, the shape of the above-mentioned pulling portion is not particularly limited as long as it can be easily pinched with a finger, and includes a square, a rectangle, a trapezoid, a semicircle, a quarter circle, a semi-oval, a chevron, a triangle, It is also possible to use a shape in which these are combined. Further, preferably, a cutting finger indicating a direction for cutting a part of the corner portion of the packaging bag in a direction crossing the liquid flowable substance outflow passage of the corner portion and the welded portion of the corner portion. Mark and perforate lines to reduce the force required for cutting and cutting. The start of cutting can be assisted by providing one or more notch for starting tearing in a part of the above-mentioned corner portion. Furthermore, by providing an embossing pattern and / or a streak pattern on the film forming the pulling portion and / or the corner portion, it is possible to ensure gripping with a finger. In addition, the bottom of the packaging bag can be configured to be self-supporting. Further, the surface of the packaging bag can be printed with a predetermined design, description, trademark or the like. The present invention also provides a packaged liquid flowable material obtained by filling the liquid flowable material packaging bag with the liquid flowable material through the liquid flowable material filling port on the upper side and welding the filling port. .

In the present invention, the plastic film means polyamide, polyester, ethylene-vinyl alcohol copolymer, polyvinylidene chloride, polycarbonate, polypropylene, polystyrene, high-pressure low-density polyethylene, linear low-density ethylene- α-olefin copolymer, linear ultra-low density ethylene-α-olefin copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene -Methacrylic acid copolymers, ethylene-methyl methacrylate copolymers, metallocene-catalyzed ethylene-based polymers, propylene-based polymers and styrene-based polymers and / or monolayer films made from modified products of these polymers or Means laminated film To. The film may or may not be stretched. Particularly desirable is a laminated film composed of a biaxially stretched polyamide film having a thickness of 10 to 50 μm and a high-pressure low density polyethylene film having a thickness of 10 to 100 μm.

In the packaging bag of the present invention, before the upper side of the plastic film is welded, the plastic film portion forming the liquid fluid outflow passage portion is sandwiched between the male forming die and the female forming die and expanded to the outer surface side. First, it is formed by a method of causing it to protrude, and then, the upper, lower, left, and right four sides are welded and formed except for the liquid fluid filling port portion on the upper side. This method is described in detail in Japanese Patent Application No. 5-219428 filed by the applicant of the present application.

In the present invention, the pulling portion having an arbitrary shape that can be pulled by being sandwiched between the human thumb and the index finger is a pulling portion on the upper side in a process after polymerizing two rectangular plastic films. Leave the other parts to cut and form the other part. A typical shape of the pulled portion is shown in FIG. Examples of these shapes are squares, rectangles, trapezoids, semicircles, quarter circles, semi-ovals, chevrons, triangles, sectors, or combinations of these shapes.

In the present invention, a cutting instruction display, a groove line, and a perforated line are provided in order to easily open the liquid fluid flow path by pulling the pulling portion. The cutting instruction display may be printed on the film surface with a straight line or a dotted line. The grooved wire can be attached by a mold by heat pressing. Perforations should be made only on the surface of the film or through the film with a perforation needle, heat press, die or laser beam.

In the present invention, in order to facilitate the opening of the outflow passage, a tear start notch is provided in a part of the corner portion, but this shape is usually triangular, and one side thereof is a cutting instruction. It is desirable that they match the markings, groove lines, and perforation lines, and the length is usually 2 to 10 mm. If the length is longer than this and the notch valley becomes deep, the corners can be easily cut. Although it is possible, accidents may occur in the distribution process and the contents may leak or the quality may deteriorate, so it is better to keep the above numerical range.

According to the present invention, when a film is made up of a pulling portion and / or a corner portion and is pulled by a finger, the finger and the film are often caught and a large tearing stress is applied without slipping. It is desirable to add embossed patterns and / or streaks. The embossed pattern is formed by subjecting the front surface and / or the back surface of the film to various embossing processes, for example, by passing the film between a chill roll having an appropriate surface roughness and a pressure roll. . If the surface roughness is small, the friction coefficient will be smaller than that of a smooth surface, which is not preferable, and it is necessary to make the surface rough to a certain extent to increase the catch of the finger.

Examples of the pattern include a tortoise shell, a lattice, a silk grain, a diamond, an insect, a linen, a satin, a splash, and a rectangular shape. The streak pattern is also formed by the same method as embossing. It is desirable that the striped pattern be applied in a direction perpendicular to the pulling direction because the catching becomes large and the tear stress easily acts.

In the present invention, it is desirable that the bottom portion of the packaging bag has a structure that allows it to stand by itself. Further, the surface of the packaging bag may be printed with a description of the product showing the contents, a trademark, a handling method of the packaging bag, decoration, design, and the like. The scope of the present invention includes not only a packaging bag filled with a liquid fluid, but also a packaged liquid fluid filled with a liquid fluid and heat-sealed at a filling port.

[0014]

【Example】

 An embodiment of the present invention will be described in detail with reference to FIGS. Two rectangular plastic films, which are slightly wider than the bag 1 shown in FIG. 1, were polymerized, and the four sides of the plastic film were removed except for the liquid fluid filling port 2 on the upper side. The upper side welded portion 3, the right side welded portion 11, the left side welded portion 12 and the lower side welded portion 13 are welded to each other, and then punched into the outer shape shown in FIG. 1 to form the packaging bag 1. At this time, a tensile portion 8 is formed so as to project at the corner of the upper welded portion 3. In the upper welded portion 3 excluding the liquid fluid filling port portion 2 on the upper side, a liquid fluid outflow passage 4 composed of a non-welded portion is formed in a bent shape, and a base end 5 of the liquid fluid outflow passage 4 is formed. Is connected to the inside of the bag, and the closed tip 6 of the liquid flowable material outflow passage 4 is arranged at the corner 7 of the welded portion on the upper side. A pulling portion 8 of an arbitrary shape having a size that can be pulled by being sandwiched between a human thumb and an index finger is provided continuously to the outside of the corner portion 7 of the upper welded portion 3. The shape of the pulling portion may be any shape as long as it can be easily pinched by a finger. For example, as shown in FIG. 3, a square 8a, a rectangle 8b, a trapezoid 8c, a semicircle 8d, a quarter. Circular shapes 8e and 8i, semi-elliptical shapes 8f, chevron shapes 8g, triangle shapes 8h and 8j, fan shapes 8k, and combinations thereof are possible. Cutting instruction display, groove line or perforated line for cutting a part of the corner portion of the packaging bag in a direction crossing the liquid flowable substance outflow passage 4 of the corner portion 7 and the welded portion of the corner portion. 9 is formed. It is desirable to form a tear initiation notch 10 at the upper edge of the corner 7 to aid in tearing. Further, as shown in FIG. 1, a tear start notch may be formed at the opposite end of the line 9. By providing an embossed pattern and / or a streak pattern on the film forming the pulling portion 8 and / or the corner portion 7, it is possible to increase the catch of the finger. Further, if necessary, the bottom portion of the bag 1 can be made into a self-supporting shape by welding an additional plastic piece 14 to the bottom portion as shown in FIG. 2, and necessary designs, explanations, trademarks and other characters can be obtained. Etc. can be printed, but these are all known means.

Further, according to the present invention, after the liquid is filled from the liquid fluid filling port portion 2 of FIG. 1, the liquid is welded and sealed to provide a packaged package as shown in FIG.

Manufacturing Example According to the embodiment of FIGS. 1 and 2, a packaging bag of the present invention and a packaging body filled with ketchup were manufactured. That is, nylon 6 was made into a tubular film by a water cooling inflation method. Using this film, simultaneous biaxial stretching was carried out to obtain a biaxially stretched nylon 6 film. The draw ratio was 3.0 in the MD direction and 3.2 in the TD direction, and the thickness of the film was 30 μm. The one this biaxial nylon 6 film linear low density ethylene - hexene copolymer film (M1 = 2.0, density ^{= 0.92 3g / cm 3, =} 50μm thickness) and a polyurethane-based adhesive An agent (trade name: ADCOAT AD308A / B, manufactured by Toyo Morton) was used as an anchor coating agent and laminated by a dry lamination method to obtain a laminated film having a total thickness of 80 μm. Two sheets of this laminated film were polymerized with the polyolefin layer inside, and a machine developed by the applicant of the present invention (described in detail in Japanese Patent Application No. 5-219428) was used to measure 20 cm in length and 13 cm in width, as shown in FIG. The tension part has a chevron shape, 2 notches, both the tension part and the corner part of the film have a streak pattern with a crest width of 1 mm, a trough width of 1 mm, and a crest and trough depth of 0.1 mm. We created a packaging bag in which both surfaces of the part of the film had a silk pattern and the bottom had a self-supporting structure. Further, the above-mentioned packaging bag was filled with tomato ketchup, and the upper charging port was heat-sealed to obtain a tomato ketchup filled packaging bag. When the tearing part of this packaging bag is pinched with the thumb and forefinger and pulled in the direction in which the two notches are connected by a straight line, it can be easily torn in a straight line direction and the outflow passage can be opened. , When the packaging bag was pressed by hand, the ketchup, which was the content, could be released.

[0017]

[Operation and effect of the present invention]

 In the present invention, since the pulling portion is provided in the continuous portion at the upper corner of the liquid flowable material packaging bag, the liquid flowable material outflow passage can be easily opened. Since it is no longer necessary to use, it can be easily opened by hand at the table, restaurants, and outdoors, and the opportunities for using the liquid fluid packaging bag can be expanded, making it easier to eat.

[Brief description of drawings]

FIG. 1 is a front view of a liquid flowable material packaging bag according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a filled liquid fluid material packaging body according to an embodiment of the present invention.

FIG. 3 is a front view showing various modifications of the pulling portion of the liquid flowable material packaging bag according to the embodiment of the present invention.

[Explanation of symbols]

 1 bag 2 liquid fluid filling port 3 upper welding part 4 liquid fluid outflow passage 5 liquid fluid outflow passage base 6 closed end of liquid fluid outflow passage 7 corner 8 pulling portion 9 cutting instruction Marking, groove line or perforated line 10 Tear start notch 11 Right side welded part 12 Left side welded part 13 Lower side welded part

Claims (8)

[Scope of utility model registration request] 1. A method of polymerizing two rectangular plastic films, excluding the upper, lower, left and right sides of the plastic film except the liquid fluid filling port on the upper side to form a bag, and forming a bag on the upper side. A liquid flowable material outflow passage consisting of a non-welded portion is formed in a bent shape in the welded portion of the upper side excluding the liquid flowable fluid filling port portion, and the base end of the liquid flowable fluid outflow passage is communicated with the bag, In a liquid flowable material packaging bag in which the closed tip of the liquid flowable material outflow passage is arranged at the corner of the welded portion on the upper side, the liquid flowable material packaging bag is continuous to the outside of the corner of the welded portion on the upper side. And an easily tearable liquid flowable material packaging bag having a pulling portion having an arbitrary shape that can be pulled and held by the index finger. 2. The shape of the pulling portion is a square, a rectangle,
The easily tearable liquid fluidity according to claim 1, which is selected from a trapezoidal shape, a semicircular shape, a quarter circular shape, a semielliptic shape, a mountain shape, a triangle shape, a fan shape, and a combination thereof. Object packaging bag. 3. A cutting instruction display groove-shaped line and a perforated line for cutting a part of the corner portion of the packaging bag in a direction crossing the liquid flowable substance outflow passage of the corner portion and the welded portion of the corner portion. The easily tearable liquid flowable material packaging bag according to claim 1, which is provided with a line or the like. 4. The easily tearable liquid flowable material packaging bag according to claim 1, wherein one or more notch for tearing initiation is provided at a part of the corner portion. 5. The easily tearable liquid fluid product packaging bag according to claim 1, wherein the film forming the pulling portion and / or the corner portion is provided with an embossed pattern and / or a streak pattern. 6. The easily tearable liquid fluid product packaging bag according to claim 1, wherein the bottom portion has a self-supporting shape. 7. The easily tearable liquid flowable material packaging bag according to claim 1, wherein the surface is printed. 8. A package characterized in that the easily tearable liquid flowable material packaging bag according to claim 1 is filled with the liquid flowable material from the liquid flowable material filling port on the upper side, and the filling port is welded. Liquid flowable material.