JPH0224791Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a packaging made of plastic film that is sealed so that sterilized wet paper, so-called wet tissue paper, or other tissue paper can be taken out one by one. Regarding bags.

(Prior Art) This type of packaging bag is known to have a structure in which an outlet is formed on the surface of the packaging bag body and the outlet is closed with a flap that can be opened and closed so that it can be reclosed. . This flap is usually made up of a cut-and-raised piece that is integrated with the packaging bag body, and when the flap is rolled up via the connecting edge with the packaging bag body, the ejection opening is opened. It is opened and the tissue paper can be taken out.

(Problems to be solved by the invention) In the above-mentioned packaging bag, the flap is opened and closed each time the tissue paper is taken out, which puts a strain on the connecting edge, which is the folded edge of the flap. There are problems in that the flap is easily cut off from the connecting edge and has poor durability. This is due to stress being concentrated on both corners of the connecting edge due to the opening and closing operations of the flap, and if the flap is torn off, it will no longer look like a packaging bag.

(Means for Solving the Problems) This invention was devised to solve the problems of the conventional structure described above, and has a flap structure that can withstand repeated opening and closing operations, and a flap structure that can withstand repeated opening and closing operations. The purpose is to provide a packaging bag that is more robust and has improved durability. Both corners of the connecting edge, which is the bent edge where the flap is integrally connected to the bag body, are cut in a semicircular shape toward the inside of the flap, and then glued to the cut-formed flap. One end of the flap, which is releasably adhered to the surface of the cover bag main body, is fixed by heat sealing along the bent edge.

(Example) Next, this invention will be explained in detail with reference to illustrated examples. The illustrated embodiment is an example in which the flap that closes the outlet formed in the bag body has a double structure. The structure is such that the above object is achieved.

As shown in Figures 1 to 3, reference numeral 1 in the figure indicates a packaging bag body made of a plastic film such as polypropylene and having a rectangular plane, in which a large number of folded wet tissue papers A are sealed and stored. , one surface 1a thereof is formed with a take-out port 2 through which the wet tissue paper A can be pulled out one by one.

The outlet portion 2 includes a horizontally elongated opening 3 having a planar pentagon shape formed at the center along the longitudinal direction of the surface 1a of the packaging bag main body, and a horizontally elongated opening 3 having a planar pentagonal shape formed by making a cut at the bottom of the pentagon. A cut-and-raised lid piece that is formed integrally with the packaging bag body by cutting the connecting edge 4a, which is a folded edge at the corresponding long side edge, while leaving it as a folded edge that is integrally connected to the packaging bag body. a first flap 4 which is entirely polymerized and bonded with an adhesive 6 so as to cover the entire circumference of the opening 3 including the surface of the first flap 4; An upper lid that is wider than the planar shape of the opening 3, with one edge 5a fixed along the bent edge 4a by heat sealing to the outer surface of the packaging bag body on the side of the bent edge 4a, which becomes the bent edge of the bag. a second flap 5 of a similar shape, and both corners of the bent edge 4a of the first flap 4 are arc-shaped so as to form a semicircle toward the inside of the flap. The notches 4b, 4b are formed so that their ends are located on the notch side of the flap 4 from the boundary line of the bent edge 4a, and the second flap can be rolled up and lowered in the direction of its short side. It has a configuration in which it can be freely peeled off or re-adhered, and a grip portion 7, which is a non-adhesive portion, is provided at the tip portion 5c of the other chevron-shaped long side edge 5b on the peeling side.

In order to manufacture the above-mentioned packaging bag according to this invention, as shown in FIG. At the same time a slit 11 is cut to form a horizontally elongated opening, a cut-and-raised piece 12 is formed to form a first flap.
The corner portion 12a of the cut-and-raised piece 12 which is integrally formed with the plastic film material 10 and connected to the plastic film material 10 is cut into a semicircular shape at least toward the inside of the flap, and then the tab portion 13a is removed. Another plastic film material 13, which will become a second flap and has an adhesive 14 applied to the entire surface of the plastic film, is polymerized and bonded so as to cover the portion where the slit 12 is formed, and heat-sealed a, followed by a packaging method known in the art. The wet tissue paper A is sealed and stored.

Next, to explain the function of the packaging bag according to this invention, when taking out the wet tissue paper A, pinch the end grip part 7 of the second flap 5 that constitutes the take-out opening part 2 with your fingers, and When the flap 1 is peeled off by rolling it up in the direction of the short side of the flap 1 (indicated by the solid arrow), the first flap 4 that closes the opening 3 remains polymerized and adhered to the back surface of the second flap 5. They are combined and rolled up to open the opening 3. At this time, the second flap 5
is rolled up in the direction of the short side of the oblong opening 3 of the packaging bag main body 1, and the long side edge 5b on the peeling side
Since it has a mountain shape, the peeling distance is small, and the adhesive force gradually increases in the peeling direction, so that initial peeling can be easily performed with a small amount of force. Next, in this state, after taking out the wet tissue paper A one by one,
When the second flap 5 is released, since the first flap 4 is formed integrally with the packaging bag main body 1 and is cut and raised in the direction of the short side, the second flap 5 is heat-sealed together. Combined with this, the repetitive force is large, and a force is exerted to naturally return to the closing direction.
The opening 3 is accurately closed with the first flap 4,
And the second flap follows the repetitive force of the first flap 4.
The flap 5 also naturally covers the periphery of the opening without bunching or wrinkling, and can be reclosed just by pressing lightly, thereby reliably sealing the opening. In addition, since the notches 4b, 4b of the first flap 4 connected to the packaging bag body are large arc-shaped cuts, when taking out the bag, the second flap
Even if the first flap 5 is strongly peeled off, stress is not concentrated on the notches 4b, 4b forming the corners of the first flap 4, and there is no risk of damage even when used repeatedly. Furthermore, as is clear from Figures 1 and 4, an arcuate notch is provided in a semicircular shape toward the inside of the flap, smoothly continuing to the notch forming the flap. Therefore, the opening width when the flap is opened can be set large, the tissue paper can be easily taken out, and the sealing performance when the flap is closed by the second flap near both corners of the connecting edge is not deteriorated. Also, as shown in Figure 4, the second
Since the first flap 5 is fixed by heat sealing along the folded edge, the corners of the first flap 4 are further strengthened.

(Effects of the invention) As described above, according to this invention, both corners of the folded edge of the flap, which is made of a cut and raised piece formed on the surface of the bag body so that it can be rolled up and opened and closed,
A semicircular arc is cut inward toward the flap so that the end of the cut is located on the cut side of the flap from the boundary line of the folded edge, and the flap is glued to the flap where the cut has been formed. One end of the flap that releasably adheres this to the surface of the cover bag body is fixed by heat sealing along the bent edge, so when taking out the wrapped tissue paper one by one, Due to the arc-shaped notch and heat sealing, stress is not concentrated on both corners of the connecting edge of the flap, which is integrated with the bag body that is opened and closed, and there is no risk of it breaking even when opened and closed repeatedly. The removal port is made more robust.
Durability can be improved, and the commercial value of tissue paper as a packaging bag can be increased. In addition, the opening width of the opening can be set larger, making it easier to take out the tissue paper.
Packaging bags become easier to handle.

[Brief explanation of the drawing]

1 is a perspective view showing an embodiment of a packaging bag for wet tissue paper according to the present invention; FIG. 2 is a partially enlarged cross-sectional view taken along the line in FIG. This figure is a cross-sectional view showing the flap in a closed state, and FIG. 4 is an explanatory view showing the manufacturing process. DESCRIPTION OF SYMBOLS 1...Packaging bag main body, 1a...Surface, 2...Outlet part, 3...Opening part, 4...First flap, 4
a...bent edge, 4b...notch, 5...second flap, A...wet tissue paper.

Claims (1)

[Scope of utility model registration request] A flap consisting of a cut-and-raised piece is cut into the surface of the bag body so that it can be rolled up and opened and closed, and both corners of the connecting edge, which forms a bent edge that is integrally connected to the bag body, are cut inside the flap. One end of the flap, which is to be releasably adhered to the surface of the cover bag body, is heated along the bent edge. A packaging bag secured with a seal.