KR102084380B1 - Method of manufacture for side wall of container bag having a band - Google Patents

Abstract

The present invention relates to a method for manufacturing a side wall portion of a container bag having a square maintenance band, which enables contents, which are to be put into in a corner space between a corner wall portion and a square maintenance band of the container bag, to be rapidly and smoothly filled, and conveniently removes residues remaining in the edge of a cut portion of the square maintenance band.

Description

Method for manufacture for side wall of container bag having a band}

The present invention relates to a method for manufacturing a side wall portion of a container bag having a rectangular holding band, and more particularly to the contents that are introduced into the corner space between the corner wall portion and the rectangular holding band of the container bag can be filled quickly and smoothly. The present invention relates to a method for manufacturing a side wall portion of a container bag having a square holding band for easily removing residues (crumbs) remaining on a cutting edge cut through the square holding band.

In general, container bags are made of paper, fabric, or flexible synthetic resins, which are advantageous for light weight. They contain and store the contents of powder or small particles such as grain, feed, cement, synthetic resin, etc. Allow it to be transported.

Such a container bag is easy to deform in appearance, so that it can be stored with minimal volume (folding) in a state where the contents are not received.

On the other hand, when transporting by air or ship, it is preferable to load a large amount of cargo in a predetermined space (container) in order to reduce the logistics cost.

Loading cargo into the container bag, particularly in the form of powder or powder, results in a high pressure on the center of the side, resulting in a bulging phenomenon in which the side of the container bag bulges. This fulling phenomenon is an obstacle to loading the container bag in a confined space.

Container bags for preventing such bulging are disclosed in Japanese Patent Application Laid-Open No. 8-80994 (published on March 26, 1996), Korean Utility Model Registration No. 0255475 (December 20, 2001), and Korean Utility Model Registration No. 0346357 (2004.03) .30 Announcement), Korean Patent Registration No. 0956942 (announced May 11, 2010), Korean Patent Publication No. 10-2016-0088714 (Published July 26, 2016).

Of these container bags, the container bag disclosed in Korean Patent No. 0956942 is shown in FIG. 1.

The inner surface of the container bag body 100, the support body 200 (square holding band) is sewn and coupled to the four corner portions of the side portion 100a, a plurality of each of the support 200 so that the powder or powder-like cargo can pass through Perforations 210 are formed.

The support 200 prevents bulging of side surfaces by mutually supporting the central portions of the side portions 100a adjacent to each other.

By providing the support 200 in the container bag can reduce the hungry phenomenon, the following problems occur when loading the cargo.

First, when granulated cargo such as powder / powder is introduced from the upper side of the container bag, the granules are accumulated in the lower center due to the slipperiness of the granules, and then the cargo flows down to the periphery along the slope of the stacked cargoes (slip).

By the way, the cargo flows into the corner portion through the perforation 210 (red arrow), but the slip of the cargo is hindered by the edges 210a of both sides of the perforation 210, it is difficult to inflow the cargo into the edge of the container bag The problem is that it does not load well.

This may result in a loss of balance of the container bag at the top when two-stage stacking is required for the transport of the container bag filled with cargo.

Second, after the perforations to form the perforations 210 on the support 200, foreign matters such as residues (crumbs) remain on the periphery of the perforations 210, which is mixed into the cargo There is a problem of lowering the purity.

Japanese Patent Laid-Open No. 8-80994 (published March 26, 1996) Korea Utility Model Registration No. 0255475 (August 20, 2001) Korea Utility Model Registration No. 0346357 (announced on March 30, 2004) Korean Registered Patent No.0956942 (announced May 11, 2010) Korean Patent Publication No. 10-2016-0088714 (published Jul. 26, 2016)

First, an object of the present invention is to provide a method for manufacturing a side wall portion of a container bag having a rectangular holding band so that contents can be quickly and smoothly filled into the corner space between the edge of the container bag and the rectangular holding band.

Secondly, the object of the present invention is to provide a method of manufacturing the side wall of the container bag to improve the strength of the joint portion of the container bag and to make the waterproofing effective.

Third, an object of the present invention is to provide a manufacturing method of a side wall portion of a container bag having a square holding band for easily removing residues (crumbs) remaining on a cutting edge cut to form a through hole of the square holding band.

In the present invention to achieve the above object in the manufacturing method of the side wall portion of the container bag having a rectangular holding band in the corner of the side wall portion formed in a rectangular cylinder shape to accommodate the contents,

A first step of forming a plurality of through holes through which the contents enter and exit the corner, and forming a plurality of through holes for joining the left and right edges of the through holes, respectively, to form the rectangular holding band; ;

A second step of manufacturing four rectangular main wall parts forming four sides of the side wall part;

A third step of forming four corner walls of the rectangular cylindrical shape and connecting four corner wall portions connecting the adjacent main wall portions;

A fourth step of arranging the joint margin part between the main wall part and the edge wall part, and joining the main wall part, the joint margin part and the corner wall part together so that the joint margin part does not protrude into the rectangular cylindrical inner space; Including;

In the fourth step, a part of the joining margin part and the through hole is disposed between the main wall part and the edge of the corner wall part, and the through hole part is included after folding the edge of the main wall part and the corner wall part. A first bonding step of primary bonding by heat sealing and a second bonding step of sewing and bonding the outer side of the heat sealing part to the secondary bonding,

In the first step, the edges of the through-holes are thermally fused so that the residues of the square holding band are fused.

First, by joining the joint margin 32 of the square holding band 30 so as not to protrude into the inner space of the rectangular cylindrical shape, the corner wall portion 20 and the square holding through the through hole 31 of the square holding band 30. The corner spaces between the bands 30 allow the contents to be filled quickly and smoothly.

Second, residues (crumbs) in which the cutting edge of the through hole 31 remains by the fusion unit 33 are fused, thereby preventing the incorporation of impurities such as residues into the contents.

Third, after arranging the joint margin part 32 and a part of the through hole 31 between the edges of the main wall part 10 and the edge wall part 20, the heat sealing part 41 and the sewing part 42 are arranged. By double bonding, the strength of the joint is improved and the contents of the liquid can be stored and transported without leakage.

1 is a perspective view showing a side wall portion of a conventional container bag,
Figure 2 is a perspective view showing the side wall portion of the container bag of the embodiment of the present invention,
3 is a perspective view showing an arrangement state of the main wall portion, the square holding band and the corner wall portion of FIG.
Figure 4 is a plan view showing a rectangular holding band applied to the side wall portion of the present invention,
5 is a perspective view showing another arrangement of the square holding band,
Figure 6 is a schematic perspective view for explaining the position of the sealing portion and the sewing portion,
Figure 7 is a schematic diagram illustrating a state in which the contents flow to the corner portion in the side wall portion of the embodiment of the present invention,
8 is a perspective view illustrating another example of the joint.

The manufacturing method of the container bag of the present invention allows the contents to be quickly and smoothly filled into the corner space between the edge wall portion of the container bag and the square holding band, and also removes residues (crumbs) remaining at the edge of the through hole cut through the square holding band. Make it easy to remove.

2 and 3 showing the side wall portion 1 of the container bag of the embodiment of the present invention, which is a rectangular cylindrical shape, the upper surface portion (not shown) having an inlet through which contents are introduced is joined to the upper surface, and the contents on the lower surface. The lower surface part (not shown) in which this discharge port is formed is joined.

The side wall portion 1 includes four rectangular main wall portions 10, four corner wall portions 20 connecting the main wall portions 10, and a plurality of through-holes 31 through which contents enter and exit the corner portion. ) Is formed in a plurality of up and down, and has a square retaining band 30 formed with a joining margin portion 32 for joining at both left and right edges of each through hole 31.

The through hole 31 is formed by punching or cutting. As shown in FIG. 4, the edge of the through hole 31 is heat-sealed to form a heat-sealed portion 33.

The joining margin part 32 is folded and joined together with the main wall part 10, the joining margin part 32, and the corner wall part 20 so as not to protrude into the rectangular cylindrical inner space.

In FIG. 2, part “A” shows a state in which the main wall part 10, the joining margin part 32, and the edge wall part 20 are arranged in contact with each other without being joined, and an enlarged part shows a joining part. It shows the state of folding and sealing by sealing and sewing.

The heat sealing part 41 is heat-sealed and bonded to the part where the edges of the main wall part 10, the joining margin part 32, and the edge wall part 20 are folded together, and the outside of the heat sealing part 41. The sewing unit 42 is bonded to the sewing is formed.

The side wall portion 1 having the above-described configuration is joined to the joint margin part 32 as shown in FIGS. 2, 3, and 7 so as not to protrude into the inner space of the rectangular cylindrical shape, and thus, the edge wall portion 20 ) And the corner space between the square holding band 30 can be filled quickly and smoothly the contents.

In addition, the residues (crumbs) in which the cutting edges of the through holes 31 remain by the fusion unit 33 are fused, thereby preventing the incorporation of impurities such as residues into the contents.

In addition, by joining the side wall portion 1 by the heat sealing portion 41 and the sewing portion 42 in a double, it is possible to improve the strength of the joint portion and to store and transport the liquid contents without leakage.

Referring to Figure 8 (enlarged view "B"), the side wall portion of the embodiment of the present invention the main wall portion 10, the joining margin portion 32 and the edge wall portion 20 to the sewing portion 42 (42a) You may double join.

The manufacturing method of the side wall 1 of the container bag as described above is as follows.

First, referring to Figure 4, the square holding band 30 is made of a fabric or flexible synthetic resin material formed a plurality of through-holes 31, the upper and lower plural through and the contents in the corner portion, Bonding margins 32 for joining are formed at both left and right edges of the through hole 31.

The through holes 31 are formed by punching or cutting. At this time, since the residues of the fabric are formed at the edges of the through holes 31, the edges of the through holes 31 are thermally fused to form a fusion portion 33. Allow the residues to fuse.

Subsequently, four quadrilateral main wall portions 10 forming four sides of the side wall portion 1 and four four corner portions forming the four corner portions of the side wall portion 1 and connecting the adjacent main wall portions 10 are formed. The edge wall part 20 is formed.

3 and 7, the joint margin part 32 is disposed between the edge of the main wall part 10 and the edge wall part 20, and the joint margin part 32 is square. The main wall portion 10, the joining margin portion 32 and the corner wall portion 20 are joined together so as not to protrude into the cylindrical inner space.

5 and 6, a portion of the joining margin part 32 and the through hole 31 is disposed between the edges of the main wall part 10 and the edge wall part 20. This is preferred. In this case, it is easy to arrange the joint margin part 32 between the main wall part 10 and the edge of the edge wall part 20 so as not to protrude into the rectangular cylindrical inner space.

Subsequently, after the edges of the main wall portion 10 and the edge wall portion 20 are folded, heat sealing joints are formed to include a portion of the through hole 31 to form a heat sealing portion 41, and the heat sealing portion 41 is formed. Sewing the outside of the sewing unit 42 is formed.

2, 3 and 7, the manufacturing method as described above, by joining the joining margin portion 32 so as not to protrude into the rectangular cylindrical inner space, the corner wall portion 20 and the square holding band The corner spaces between the 30 allow the contents to be filled quickly and smoothly.

In addition, the residues (crumbs) in which the cutting edges of the through holes 31 remain by the fusion unit 33 are fused, thereby preventing the incorporation of impurities such as residues into the contents.

In addition, by joining the side wall portion 1 by the heat sealing portion 41 and the sewing portion 42 in a double, it is possible to improve the strength of the joint portion and to store and transport the liquid contents without leakage.

1 ... side wall part 10 ... main wall part
20 ... corner wall 30 ... square retaining band
31 through-through 32
33.Welded part 41 ... Heat sealing part
42.Sewing

Claims (1)

In the manufacturing method of the side wall portion of the container bag having a rectangular holding band in the corner of the side wall portion formed in a rectangular cylinder shape to receive the contents,
Forming a plurality of through holes 31 up and down the contents into and out of the corner portion, and forming a joining margin portion 32 for joining at both left and right edges of the through holes 31 A first step of manufacturing the blind spot band 30;
A second step of manufacturing four rectangular main wall portions 10 forming four side portions of the side wall portions;
A third step of forming the four corner wall portions 20 connecting the main wall portions 10 adjacent to each other and forming four corner portions of the rectangular cylindrical shape;
The joining margin part 32 is disposed between the edges of the main wall part 10 and the edge wall part 20, but the main joining part 32 does not protrude into an inner space of the rectangular cylindrical shape. 10), a fourth step of joining the joint margin portion 32 and the edge wall portion 20 together;
In the fourth step, a part of the joining margin part 32 and the through hole 31 is disposed between the edges of the main wall part 10 and the edge wall part 20.
A first joining step of forming a heat sealing part 41 by folding the edges of the main wall part 10 and the edge wall part 20 to form a heat sealing part so that the through hole 31 is included, and the heat sealing part. And a second joining step of sewing the outside of the portion 41 to form the sewing portion 42,
In the first step of the container bag having a square holding band, characterized in that the residue of the square holding band 30 to be fused by forming a fusion portion 33 by thermally fusion of the edge of the through hole 31. Side wall part manufacturing method.

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