Zipper bag

Abstract

To provide a zipper bag that allows for easy insertion and removal of items from the bag body, and enables the simple and low-cost formation of an opening. [Solution] The zipper bag 10 comprises a bag body 12, an opening 16 at one end of the bag body 12, and a zipper portion 14 formed to encircle the inside of the opening 16 and to open and close the opening 16. The opening end of the opening 16 of the bag body 12, which is on the outside of the zipper portion 14, is notched in a non-linear shape. As an example, one overlapping surface of the opening end is made into a curved convex shape 1610, and the other surface is made into a curved concave shape 1612 that is continuous with the curved protruding shape 1610.

Description

Technical Field

[0001] The present invention relates to a zipper bag used for hermetically storing liquids, granules, powders, etc.

Background Art

[0002] Conventionally, zipper bags that can be easily sealed and stored have been widely used for various purposes such as storing food and drinks and storing soiled items (Patent Documents 1, 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the zipper bag of Patent Document 1, the opening end of the bag opened by the zipper is horizontally cut out, and when putting in and taking out liquids or granular substances, it is difficult to carry out the putting in and taking out, and there is a case where it is likely to spill around.

[0005] In order to solve this problem, in the portable toilet of Patent Document 2, the opening end of the zipper bag is formed in a curved shape, enabling liquid substances to be put in without leaking from the outside.

[0006] However, the opening of Patent Document 2 is made separately from the zipper bag and has a structure that is attached and fixed to the opening of the zipper bag, which has the problems that the structure is complicated, the manufacturing is laborious, and the cost increases.

[0007] An object of the present invention is to provide a zipper bag that can easily form an opening for facilitating the putting in and taking out of objects with respect to the bag body simply and at low cost. [Means for solving the problem]

[0008] (Zipper bag) This invention is, The bag itself and An opening is made at one end of the bag body, A zipper section is formed to encircle the inside of the opening, and the opening is opened and closed. A zipper bag equipped with, The zipper portion is characterized by having an opening end that is notched in a predetermined nonlinear shape.

[0009] (Curved opening end) The open ends are designed such that one surface of the overlapping open ends is curved and convex, while the other surface is a straight line that is continuous with the curved protrusion.

[0010] (slope opening end) The opening end is a beveled, inclined opening shape, and the acute-angled edge opening of the inclined opening is cut out to create an obtuse-angled edge opening. In this case, the opening end is a polyline shape, and a polyline is included as one form of a nonlinear shape. [Effects of the Invention]

[0011] (The effect of zipper bags) This invention relates to a zipper bag comprising a bag body, an opening at one end of the bag body, and a zipper portion formed to encircle the inside of the opening and for opening and closing the opening. The opening end of the outer opening portion is notched in a predetermined nonlinear shape. Therefore, by simply forming a rectangular zipper bag and then adding the step of nonlinearly notching the outer opening portion of the zipper portion, the inclined opening end is formed integrally with the bag body, eliminating the need for additional structures. This results in a simple and easy-to-manufacture structure, enabling the provision of low-cost, large-volume zipper bags with an inclined opening end that facilitates the easy and convenient insertion and removal of liquids and granules. (Effect of curved opening) In addition, for the open end, one side of the overlapping open ends is in a curved convex shape, and the other side is in a linear shape that is continuous with a curved protruding shape. Therefore, when the opening of the zipper bag is opened and, for example, pressed against the human body, the open end opens in a continuous curved shape, so that it does not strongly stimulate and can increase the degree of adhesion to the human body.

[0012] (Effect of the inclined open end) In addition, the open end has an inclined open shape with a notch, and the acute-edge opening of the inclined opening shape is cut out to form an obtuse-edge opening. Therefore, when the opening of the zipper bag is the inclined open end, the triangular top of the inclined opening is an acute angle, and for example, when pressed against the human body, it may strongly stimulate. Therefore, by horizontally cutting and removing the triangular top, an obtuse-edge opening is formed, making it possible to soften the contact with the human body.

Brief Description of the Drawings

[0013] [Figure 1] This is an explanatory drawing showing the zipper bag according to the first embodiment of the present invention with its mouth open. [Figure 2] This is an explanatory drawing showing the zipper bag according to the first embodiment of the present invention with its mouth closed. [Figure 3] This is an explanatory drawing showing the zipper bag according to the first embodiment of the present invention unfolded. [Figure 4] This is an explanatory drawing showing the zipper bag according to the second embodiment of the present invention with its mouth open. [Figure 5] This is an explanatory drawing showing the zipper bag according to the second embodiment of the present invention with its mouth closed. [Figure 6] This is an explanatory drawing showing the zipper bag according to the second embodiment of the present invention unfolded.

[0014] [Specific Content of the Embodiment] The zipper bag of the present invention will be described in detail by dividing it into the first embodiment and the second embodiment.

[0015] (First Embodiment of the Zipper Bag) A first embodiment of the zipper bag will be described. In this description, reference is made to FIG. 1 showing the zipper bag according to the first embodiment of the present invention with its mouth open, FIG. 2 showing the zipper bag according to the second embodiment of the present invention with its mouth closed, and FIG. 3 showing the zipper bag according to the second embodiment of the present invention unfolded.

[0016] Here, in the description of FIG. 1, the X - Y - Z directions are orthogonal to each other. Specifically, the left - right direction is the X - direction, the up - down direction is the Y - direction, and the depth direction (front - rear direction) is the Z - direction. Also, the +X side in the X - direction is the right side, the - X side is the left side, the +Y side in the Y - direction is the upper side, the - Y side is the lower side, the +Z side in the Z - direction is the front side, and the - Z side is the rear side. This is the same in FIGS. 1 to 6.

[0017] As shown in FIGS. 1 and 2, the zipper bag 10 of this embodiment has a bag body 12 made of a synthetic resin sheet such as polyethylene. In addition to the synthetic resin sheet, a paper sheet laminated with a synthetic resin layer may be used.

[0018] The bag body 12 is formed as a bag body with the right side, left side, and bottom of two synthetic resin sheets welded and an opening at the top. Inside the opening side of the bag body 12, a zipper part 14 is formed to go around the inside, enabling the opening 16 to be opened and closed. The zipper part 14 may be formed in a double - layer to increase the sealing degree.

[0019] The opening end of the opening 16 on the outer side of the zipper part 14 has one of the opening surfaces that overlap front - to - back, for example, the rear side is a curved convex shape 1610, and the other opening surface, for example, the front side is a linear shape 1612. The linear shape 1612 is a curved shape continuous at both ends with respect to the curved convex shape 1610. The linear shape 1612 may be a curved concave shape.

[0020] The unfolding structure of the zipper bag 10 of this embodiment, shown in Figure 3, will now be described in more detail. A female zipper 1410 with a fitting groove is integrally formed laterally on the inner surface near the opening of the unfolded left bag body 1210, and a male zipper 1412 with a fitting projection is integrally formed on the inner surface of the right bag body 1212, which corresponds to the fitting groove of the female zipper 1410.

[0021] The length and width dimensions of the left bag body 1210 are arbitrary and should be sized according to the items to be stored. Furthermore, the height H1 of the protruding curved portion of the curved convex shape 1610 formed above the female zipper 1410 of the left bag body 1210 is also arbitrary and can be set to a height of, for example, 2-3 cm.

[0022] Furthermore, the height H2 of the recessed curved portion of the curved concave shape 1612 formed on the upper side of the male zipper 1412 of the right bag body 1212 is also arbitrary, and can be set to the same height as or less than the height H1 of the curved convex shape 1610.

[0023] Furthermore, the curved convex shape 1610 and the straight shape 1612 are mutually continuous curved shapes at both ends.

[0024] As shown in Figure 1, one side of the overlapping opening 16 of the zipper bag 10 is made into a curved convex shape 1610, and the other side into a straight shape 1612. For example, when the zipper bag 10 is used as a portable urination bag or vomiting bag, when the opening 16 of the zipper bag 10 is opened and pressed against the body, for example, the opening 16 opens into a continuous curved shape, which prevents strong irritation to the body and allows for a greater degree of contact with the body.

[0025] The zipper bag 10 of this embodiment is manufactured, for example, using an inflation molding machine. An inflation molding machine is a processing machine that molds synthetic resin into a film and processes the resin film into a bag. Molding the zipper bag using an inflation molding machine is optional, but after forming a rectangular zipper bag with the zipper portion 14 integrally formed by a known method, a cutter with a press structure is used to form a curved convex shape 1610 and a straight shape 1612 in the opening 16.

[0026] (Second embodiment of the zipper bag) Next, a second embodiment of the zipper bag will be described in detail. In this description, refer to Figure 4, which shows the zipper bag of the second embodiment of the present invention with the opening open; Figure 5, which shows the zipper bag of the second embodiment of the present invention with the opening closed; and Figure 5, which shows the zipper bag of the second embodiment of the present invention unfolded.

[0027] As shown in Figure 4, the zipper bag 10 of this embodiment has a bag body 12 made of a synthetic resin sheet such as polyethylene. In addition to a synthetic resin sheet, a paper sheet laminated with a synthetic resin layer may also be used.

[0028] The bag body 12 is formed by welding the right, left, and bottom edges of two synthetic resin sheets together, with an opening at the top. Inside the opening side of the bag body 12, a zipper section 14 is formed to encircle the interior, allowing the opening 16 to be opened and closed. The zipper section 14 may be double-layered to improve the degree of airtightness.

[0029] The opening end of the outer opening 16 of the zipper portion 14 is an inclined opening end 1614 formed by a diagonal cutout. Furthermore, an obtuse-angled edge opening 1616 is formed on the raised left side of the inclined opening end 1614.

[0030] The obtuse-angled edge opening 1616 is formed for the following reason: As shown by the dashed line in Figure 5, the raised portion at the left end of the inclined opening end 1614 before the obtuse-angled edge opening 1616 is formed is an acute-angled edge opening 18. If the opening 16 is opened as shown in Figure 4, the acute-angled edge opening 18 will protrude sharply outward from the top, potentially causing a strong irritation if it comes into contact with, for example, a person's body.

[0031] Therefore, in this embodiment, the acute-angled edge opening 18 is notched and removed to create an obtuse-angled edge opening 1616, so that it does not cause strong irritation when applied to the human body.

[0032] The unfolding structure of the zipper bag 10 of this embodiment, shown in Figure 6, will be described in more detail. A female zipper 1410 with a fitting groove is integrally formed laterally on the inner surface near the opening of the unfolded left bag body 1210, and a male zipper 1412 with a fitting projection is integrally formed on the inner surface of the right bag body 1212, which corresponds to the fitting groove of the female zipper 1410.

[0033] The length and width of the left bag body 1210 are arbitrary and are sized according to the object to be stored. The inclination angle θ of the inclined opening end 1614 formed above the female zipper 1410 of the left bag body 1210 is also arbitrary and is set to a predetermined angle in the range of 10° to 30°. The height H3 from the female zipper 1410 of the acute-angled opening 18 before the obtuse-angled edge opening 1616 is formed is determined by the inclination angle θ and the width W1.

[0034] The sharp-angled edge portion 18 is cut to remove the triangular portion that forms the sharp-angled edge opening 18. The height H4 and width W2 of the cut are arbitrary, and the size is such that it does not cause strong irritation when the opening 16 is opened and placed against the body, and that it fits the body easily. This also applies to the right bag body 1212 in which the male zipper 1412 is integrally formed.

[0035] The zipper bag 10 of this embodiment is manufactured, for example, using an inflation molding machine. An inflation molding machine is a processing machine that molds synthetic resin into a film and processes the resin film into a bag. While molding the zipper bag with an inflation molding machine is optional, a rectangular zipper bag with the zipper portion 14 integrally formed by a known method is formed first, and then an inclined opening 1614 and an obtuse-angled edge opening 1616 are formed in the opening 16 using a cutter with a press-type structure.

[0036] Furthermore, this invention is not limited to the embodiments described above, and includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the embodiments described above. [Explanation of Symbols]

[0037] 10: Zipper bags 12: Bag body 1210: Left bag body 1212: Right bag body 14: Zipper part 1410: Female zipper 1412: Male Zipper 16: Opening 1610: Curved convex shape 1612: Straight line shape 1614: Slanted opening 1616: Obtuse-angled edge opening 18: Sharp-angled edge opening

Claims

1. The bag itself and An opening is made at one end of the bag body, A zipper portion is formed to encircle the inside of the opening and to open and close the opening, A zipper bag equipped with, A zipper bag characterized in that the opening end of the opening that is on the outside of the zipper portion is notched in a predetermined nonlinear shape.

2. A zipper bag according to claim 1, The zipper bag is characterized in that the opening ends have one side of the overlapping opening ends formed into a curved convex shape, and the other side formed into a straight shape continuous with the curved convex shape.

3. A zipper bag according to claim 1, The zipper bag is characterized in that the opening end has an obliquely cut inclined opening shape, and the acute-angled edge opening of the inclined opening shape is cut out to create an obtuse-angled edge opening.

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