KR20030020540A - Vinyl bag with sealing structure - Google Patents

Abstract

PURPOSE: A vinyl bag sealing structure is provided to ventilate air inside a bag and seal completely a containing material for better preservation. CONSTITUTION: The vinyl bag includes a binding band(1,2), a ventilation path(3), a ventilation hole(4), a bottom binder(5), a vinyl cover(10) and an upper and bottom junction part(20,30). The upper and bottom junction parts(20,30) have the binding band(1,2) in parallel. The ventilation path(3) locates between the binding band(1,2). On the ventilation path(3) has the ventilation hole(4) by penetrating the vinyl cover(10). One of the upper and bottom junction part(20,30) has the ventilation path(3) so the compressed internal air ventilates the ventilation hole(4) through the binding band(1) when the bag is stacked for a long time.

Description

Vinyl bag with sealing structure

The present invention relates to a vinyl bag for storing the contents such as fertilizer or feed, and particularly relates to a sealing structure of the vinyl bag to prevent the contents contained in the plastic bag is leaked to the outside.

Since then, vinyl bags have been used for the purpose of storing and storing contents such as fertilizer or feed.

In general, a vinyl bag is sealed in the upper and lower bonding ends formed in a band shape at the upper and lower ends of two-ply plastic paper, respectively, to prevent the contents contained in the plastic bag from leaking to the outside. In this plastic bag, the upper and lower joint ends are simply heat-sealed to form a physical bonding force. Therefore, the inner and outer joints are easily opened and cannot easily be inflated due to pressure or temperature change. Cases have occurred frequently.

In more detail, the original vinyl bag is formed by joining the lower bonding end to the bottom of the two-ply plastic paper to fill the internal space secured by filling the contents of fertilizers, feeds, etc., and the upper part of the two-ply plastic paper filled with the contents The upper junction is joined to form a seal. In this case, considering that the sealed plastic bag is filled with a large amount of air together with the contents, if the vinyl bag is loaded for a long time in the distribution process, the internal air in the plastic bag is pressed by the pressing force and the elevated temperature. Compression and expansion cause a phenomenon of leaking to the outside through the poorly bonded portion of the upper and lower junctions, and when the internal air leaks to the upper and lower junctions, the contents in the plastic bag are leaked through the damaged parts that are punctured. It was accompanied by a problem.

An object of the present invention is to provide a sealing structure of the plastic bag to improve the storage performance of the contents by sealing the plastic bag to induce the compressed air to be discharged and to block the contents.

1 is a perspective view showing the sealing structure of the present invention vinyl bag

Figure 2 is a longitudinal sectional view showing the sealing structure of the present invention vinyl bag

Figure 3 is a front view showing the sealing structure of the plastic bag according to another embodiment of the present invention

<Description of the symbols for the main parts of the drawings>

1, 2: first and second joining bands 3: exhaust passage

4: vent hole 5: single joint strip

10: plastic paper 20, 30: upper and lower joint ends

1 and 2, the upper and lower bonding ends 20 and 30 are formed in the upper and lower ends of the two-ply plastic paper 10 in the form of bands, respectively. The concept of technology is the same.

However, in the sealing structure of the plastic bag of the present invention, any one of the upper and lower joining ends 20 and 30 is joined to the first and second joining bands 1 and 2 in parallel at a predetermined interval. The exhaust passage (3) is secured between the first and second joining bands, and the exhaust hole (4) is formed by drilling the plastic paper (10) at a predetermined position on the exhaust passage (3). It is characterized by the configuration.

Thus, in the present invention, one of the upper and lower bonding stages 20 and 30 has an exhaust passage 3 through which the exhaust hole 4 is drilled between the first and second bonding bands 1 and 2, which are double bonded. ) And sealed to ensure that the vinyl bag 100 has been stacked for a long time, and the compressed air is expanded by the pressing force and the elevated temperature in the state where it has been stacked for a long time. (4) induces leakage to the outside and at the same time, when the internal air leaks, the contents to be leaked through the damaged part drilled in the first bonding band 1 are blocked by the second bonding band 2, thereby And lower junction end 20, 30 is to have the advantage of preventing the loss of the contents leaked to the outside by faithfully performing the original sealing function.

Hereinafter, the technical details of the present invention through the specific embodiments shown in the accompanying drawings in detail.

In the exemplary embodiment of the present invention, the upper joint end 20 may have an exhaust hole between the first and second joint strips 1 and 2 that are heat-sealed in parallel at intervals at an upper end of the two-ply plastic sheet 10. (4) sealed to secure the exhaust passage (3) to be secured, and the lower joint end 30 is to be sealed as a single joint strip (5) heat-sealed to the lower end of the two-ply plastic paper (10) To illustrate.

The second bonding band 2 of the upper bonding end 20 and the single bonding band 5 of the lower bonding end 30 allow the width to be heat-sealed wide, and the first bonding band 20 of the first bonding end 20. It is important that the joint strip 1 is thermally fused relatively narrowly. The reason is that the internal air compressed and expanded in the plastic bag 100 induces the first bonding band 1 of the upper bonding end 20 to be easily leaked to the outside and at the same time, the upper bonding end 20 The second bonding band 2 of) and the single bonding band 5 of the lower bonding end 30 are intended to reliably block the outflow of the contents without causing damage to the internal air.

Here, it is preferable that at least one exhaust hole 4 is formed by drilling one side of the plastic paper 10 so as to communicate with the exhaust passage 3 as shown in FIGS. 1 and 2. At this time, the exhaust hole (4) is to be formed as a diameter size to the extent that the internal air via the exhaust passage (3) can quickly leak to the outside.

Figure 3 shows another embodiment of the present invention, the upper and lower joint ends 20, 30 are respectively joined to the first and second joint strips (1) (2) bonded in parallel to each other at a predetermined interval The exhaust passage 3 is secured between the first and second joining bands, and the exhaust hole 4 is formed by drilling the plastic paper 10 at a predetermined position on the exhaust passage 3. According to another embodiment of the present invention, the upper junction end 20 and the lower junction end 30 by compressing and expanding the internal air induces to be discharged and the contents are blocked by giving a sealing function to block, the vinyl bag 100 ) Will have the advantage of keeping the contents contained in more stable.

As described above, the sealing structure of the vinyl bag of the present invention induces the compressed and expanded internal air to be discharged and seals the vinyl bag to block the contents, thereby preventing the contents from leaking out to the outside. The state will have a useful effect.

Claims (3)

In the upper and lower bonding ends 20, 30 formed in the upper and lower ends of the two-ply plastic paper 10, respectively, in the form of a band, Any one of the upper and lower bonding ends 20, 30 is composed of first and second bonding bands (1) (2) bonded in parallel to each other at a predetermined interval between the first and second bonding bands Sealing structure of the plastic bag characterized in that the exhaust passage (3) is secured, and the exhaust hole (4) is formed by drilling a plastic sheet (10) at a predetermined position on the exhaust passage (3). 2. The sealing structure according to claim 1, wherein at least one exhaust hole (4) is formed by drilling one plastic sheet (10) so as to communicate with the exhaust passage (3). According to claim 1, wherein the upper and lower joint ends 20, 30 are each composed of first and second joint strips (1) (2) bonded in parallel to each other at a predetermined interval so that the first and second Sealing structure of the plastic bag, characterized in that the exhaust passage (3) is secured between the joining band, and the exhaust hole (4) is formed by drilling the plastic paper (10) at a predetermined position on the exhaust passage (3).