JP3214968U - Reinforcing sheet for flexible container bag and flexible container bag using the same - Google Patents

Abstract

A reinforcing sheet for a flexible container bag that hardly contaminates a load and a flexible container bag using the same. A flexible container bag reinforcing sheet comprising a sheet body having a plurality of through holes, the sheet body being formed of a polyethylene woven cloth and polyethylene. Two laminated layers 212 laminated on both surfaces of the polyethylene woven cloth 211 and a film formed of polyethylene, and the two laminated layers 212 are sandwiched between the polyethylene woven cloth 211 and the two laminated layers 212. And two reinforcing layers 213 installed on the respective outer surfaces. [Selection] Figure 3

Description

  The present invention relates to a flexible container bag, and more specifically, to a reinforcing sheet for a flexible container bag and a flexible container bag using the same.

  The flexible container bag is a bag-like bag for storing and transporting luggage such as powder and granular materials. Generally, a flexible container bag has a volume of 1 cubic meter or more, and a reinforcing structure that can be held in a certain shape is necessary for the convenience of loading.

  For example, as shown in FIG. 1, a flexible container bag disclosed in Patent Document 1 includes a peripheral wall portion 11 that surrounds a hollow quadrangular prism-shaped accommodation space 111 that is open at opposite ends, and is openable and closable. The transport pipe 121 is installed, two end wall portions 12 covering both openings of the accommodation space 111, a plurality of through holes 131 are formed, and the peripheral wall portion 11 is formed. The four reinforcing sheets 13 are sewn to the four corners of the hollow quadrangular prism.

  When packing a package into the flexible container bag, the transport pipe 121 of one end wall portion 12 is opened, and the package is put into the accommodation space 111 via the transport pipe 121. In addition, the load placed in the accommodation space 111 is further packed between the reinforcing sheet 13 and the peripheral wall portion 11 via the through hole 131. When the baggage fills the flexible container bag, the lateral pressure by the baggage becomes a force that deforms the peripheral wall portion 11 laterally, but the four reinforcing sheets 13 sewn to the four corners of the hollow quadrangular column respectively A force that resists pressure is generated, and the shape of the peripheral wall portion 11 is maintained.

Taiwan Utility Model Registration No. M363451 Specification

  However, since the reinforcing sheet 13 disclosed in Patent Document 1 is configured by laminating polypropylene on both sides of the polypropylene woven fabric with the polypropylene woven fabric as the central layer, when packing the luggage into the flexible container bag, Polypropylene laminated by deforming the reinforcing sheet 13 by pressing from the load tends to be damaged. When the laminated polypropylene breaks, the polypropylene woven fabric that is the center layer is exposed, and the polypropylene woven fabric is directly pressed and rubbed against the baggage, so that the yarn constituting the polypropylene woven fabric comes out and enters the baggage. There is a problem. Furthermore, the peripheral edge of the reinforcing sheet 13 and the peripheral edge portion of the through hole 131 are more likely to be damaged than the other parts, and the yarn constituting the polypropylene woven fabric is likely to come off and be mixed into the luggage.

  In particular, when the allowable range of impurities in the package is low, for example, when the polycarbonate for optical components is contaminated with contaminants, the defect rate of the optical components manufactured by the contaminated polycarbonate is greatly increased. In addition, when the baggage is food, there is a problem that an edible person accidentally eats polypropylene and harms health.

  In view of the above problems, an object of the present invention is to provide a reinforcing sheet for a flexible container bag that hardly contaminates luggage.

  In order to achieve the above object, the present invention is a reinforcing sheet for a flexible container bag comprising a sheet body having a plurality of through holes, wherein the sheet body is formed of polyethylene woven fabric and polyethylene. Two laminated layers laminated on both sides of the polyethylene woven fabric, and a film formed of polyethylene, the two laminated layers being sandwiched between the polyethylene woven fabric, respectively. There is provided a reinforcing sheet for a flexible container bag, comprising two reinforcing layers installed on the outer surfaces of each of two laminate layers.

  Moreover, the reinforcement sheet | seat for flexible container bags as described in any one of Claims 1-7 formed in the substantially rectangular shape each of four made from textiles, and the said inner bag, The inner bag has a bag body that is a hollow, substantially rectangular parallelepiped so as to surround the accommodation space, and the bag body has four side wall portions that form a hollow rectangular column that is open at both upper and lower ends. Further, the two opposite side edges of each of the four flexible container bag reinforcing sheets are adjacent to the two corners of the hollow quadrangular column surrounded by the four side walls. A flexible container bag is provided that is sewn to each of the two side wall portions.

  With the above configuration, the reinforcing sheet for a flexible container bag of the present invention has a five-layer structure of polyethylene woven fabric, two laminate layers, and two reinforcing layers, and the whole is made of polyethylene having higher toughness than polypropylene. The flexible container bag using the flexible container bag reinforcing sheet of the present invention can greatly reduce the situation of contaminating the baggage than the conventional flexible container bag because it is not easily damaged even if it is deformed by the pressure from the baggage.

It is component exploded drawing which shows the conventional flexible container bag. It is a perspective view which shows embodiment of the reinforcement sheet for flexible container bags of this invention. It is sectional drawing which shows the said reinforcing sheet for flexible container bags. It is a component exploded view showing an embodiment of a flexible container bag of the present invention. It is sectional drawing which shows the said flexible container bag.

  Hereinafter, preferred embodiments of a reinforcing sheet for a flexible container bag and a flexible container bag according to the present invention will be described in detail with reference to the drawings.

  FIG. 2 is a perspective view showing an embodiment of a reinforcing sheet for a flexible container bag according to the present invention. FIG. 3 is a sectional view showing the reinforcing sheet for flexible container bag.

  A preferred embodiment of the reinforcing sheet 2 for a flexible container bag of the present invention includes a sheet body 21 in which a plurality of through holes 22 are formed, as shown in FIG. In this embodiment, the flexible container bag reinforcing sheet 2 is formed in a rectangular shape.

  As shown in FIG. 3, the sheet body 21 has a five-layer structure including a polyethylene woven fabric 211, two laminate layers 212, and two reinforcing layers 213.

  The polyethylene woven fabric 211 is made of high density polyethylene (HDPE) yarn, and preferably has a denier in the range of 650 to 2000 and a thread count in the range of 14 to 34.

  The two laminate layers 212 are formed of low density polyethylene (LDPE), and are laminated on both surfaces of the polyethylene woven fabric 211. There are no particular limitations on the laminating method, and methods such as coating, impregnation, and extrusion can be used.

  The thickness of each laminate layer 212 is in the range of 10 micrometers to 40 micrometers, preferably in the range of 15 micrometers to 30 micrometers.

  The two reinforcing layers 213 are films formed of linear low density polyethylene (LLDPE), low density polyethylene, or a combination thereof, and the two laminated layers 212 are sandwiched between the polyethylene woven fabric 211, respectively. For example, the two laminated layers 212 are bonded to each other on the outer surface. When using a combination of linear low density polyethylene and low density polyethylene, the composition ratio of linear low density polyethylene and low density polyethylene is not particularly limited, depending on cost, desired strength, workability, etc. It can be adjusted appropriately.

  The thickness of the reinforcing layer 213 is in the range of 50 micrometers to 100 micrometers, and preferably in the range of 60 micrometers to 80 micrometers.

  The plurality of through holes 22 are formed by cutting the sheet body 21 after the sheet body 21 is configured in a five-layer structure. The shape of the through hole 22 is not particularly limited, and can be formed in a circular shape, a square shape, an elliptical shape, or the like. In this embodiment, the shape of the through hole 22 is formed in an oval shape.

  In the manufacturing method of the reinforcing sheet for a flexible container bag according to the present invention, first, the polyethylene woven fabric 211 is used as a central layer, and low density polyethylene is laminated on both sides of the polyethylene woven fabric 211 to form two laminated layers 212. Then, before the two laminate layers 212 are cured, a film formed of polyethylene is attached to each of the two laminate layers 212 to form two reinforcing layers 213. Finally, after fixing the shape by pressurization, it is cut into an appropriate shape and a plurality of through holes 22 are formed, whereby the flexible container bag reinforcing sheet of the present invention is obtained.

  According to said structure, since the reinforcement sheet for flexible container bags of this invention is comprised entirely with polyethylene, it has the intensity | strength which can support a flexible container bag, and its toughness is higher than a polypropylene, and is deformed by press. However, it is hard to break, can protect the polyethylene woven fabric better, and can prevent the yarn constituting the polyethylene woven fabric from coming off. Further, since the laminate layer 212 and the reinforcing layer 213 are made of polyethylene, the adhesive force between the laminate layer 212 and the reinforcing layer 213 is high, and the reinforcing layer 213 is difficult to peel off. Accordingly, the polyethylene woven fabric can be effectively protected also at the peripheral edge of the flexible container bag reinforcing sheet 2 and the peripheral edge portion of the through hole 22.

  FIG. 4 is an exploded view showing an embodiment of the flexible container bag of the present invention. FIG. 5 is a sectional view showing the flexible container bag.

  As shown in FIG. 4, a preferred embodiment of the flexible container bag of the present invention is constituted by the four reinforcing sheet 2 for flexible container bag, and the outer bag 3 and the inner bag 4 made of fabric. .

  The inner bag 4 is composed of a bag body 41 surrounding a housing space 43 that is a hollow, substantially rectangular parallelepiped, and two transport pipes 42.

  The bag body 41 is installed so as to cover the four side walls 413 constituting the hollow quadrangular column whose upper and lower ends are open and the upper end opening of the hollow quadrangular column, and one transport pipe 42 communicates with the accommodation space 43. The top wall portion 411 and the bottom wall portion 412 that covers the lower end opening of the hollow quadrangular column and that is installed so that another transport pipe 42 communicates with the accommodation space 43. .

  The outer bag 3 has an inner bag installation space, while a peripheral wall portion 31 surrounding the inner bag installation space 34 opened at both upper and lower ends so that the inner bag 4 can be installed, and a passage hole 321 through which the transport pipe 42 can pass. 34 includes two end wall portions 32 covering openings at both upper and lower ends, and four suspension belts 33 installed at four corners at the upper end of the peripheral wall portion 31, respectively.

  As shown in FIG. 5, each of the four flexible container bag reinforcing sheets 2 has four corners of a hollow quadrangular column in which both side edges on each pair of opposite sides are surrounded by four side wall portions 413. Are installed in the inner bag 4 by being sewn to each of the two adjacent side wall portions 413.

  In this embodiment, each of the both side edges of the flexible container bag reinforcing sheet 2 is 1/3 to 2/5 of the width of the side wall 413 from the corner of the hollow quadrangular prism in the side wall 413, as shown in FIG. Is sewn to the position.

  When storing a load using the flexible container bag of the present invention, the transport pipe 42 installed on the bottom wall 412 is closed, and then the transport pipe 42 installed on the top wall 411 is opened. The package is sent into the accommodation space 43. Then, the cargo sent into the storage space 43 is also packed between the flexible container bag reinforcing sheet 2 and the side wall portion 413 through the storage space 43 and the plurality of through holes 22 of the flexible container bag reinforcing sheet 2. When discharging the cargo, if the transportation tube 42 installed on the bottom wall portion 412 is aimed at the other housing the cargo and the transportation tube 42 is opened, the cargo is installed on the bottom wall portion 412 by gravity. It is discharged through the transport pipe 42.

  According to the above configuration, even when the flexible container bag reinforcing sheet 3 is deformed by the pressing of the load when storing and discharging the load, the laminate layer 212 and the reinforcing layer 213 made of polyethylene have high toughness. 212 and the reinforcing layer 213 are not damaged, and the polyethylene woven cloth used as the central layer is not exposed, and the load directly presses and rubs the polyethylene woven cloth, so that the yarn constituting the polypropylene woven cloth comes off and enters the luggage. This can be significantly reduced compared to conventional reinforcing sheets.

  The reinforcing sheet for a flexible container bag of the present invention can be applied to a flexible container bag used for storing and transporting luggage such as powder and granular materials. The flexible container bag using the reinforcing sheet for a flexible container bag of the present invention is particularly suitable for storing and transporting a load having a low tolerance for impurities.

2 Reinforcing sheet 22 for flexible container bag Through hole 21 Sheet body 211 Polyethylene woven fabric 212 Laminating layer 213 Reinforcing layer 3 Outer bag 31 Peripheral wall portion 32 End wall portion 321 Passing hole 33 Hanging belt 34 Inner bag installation space 4 Inner bag 41 Bag body 411 Top wall part 412 Bottom wall part 413 Side wall part 42 Transport pipe 43 Accommodating space

Claims (8)

A flexible container bag reinforcing sheet comprising a sheet body with a plurality of through holes,
The sheet body includes a polyethylene woven fabric,
Two laminated layers made of polyethylene and laminated on both sides of the polyethylene woven fabric;
A film formed of polyethylene, including two reinforcing layers installed on the outer surfaces of the two laminate layers so as to sandwich the two laminate layers with the polyethylene woven fabric, respectively. Reinforcing sheet for flexible container bag. The reinforcing sheet for flexible container bags according to claim 1, wherein the polyethylene woven fabric has a denier within a range of 650 to 2000 and a thread count within a range of 14 to 34. The thickness of the said laminate layer exists in the range of 10 micrometers-40 micrometers, The reinforcing sheet for flexible container bags of Claim 1 or Claim 2 characterized by the above-mentioned. The thickness of the said laminate layer exists in the range of 15 micrometers-30 micrometers, The reinforcement sheet | seat for flexible container bags of Claim 1 or Claim 2 characterized by the above-mentioned. The thickness of the said reinforcement layer exists in the range of 50 micrometers-100 micrometers, The reinforcement sheet | seat for flexible container bags as described in any one of Claims 1-4 characterized by the above-mentioned. The thickness of the said reinforcement layer exists in the range of 60 micrometers-80 micrometers, The reinforcement sheet | seat for flexible container bags as described in any one of Claims 1-4 characterized by the above-mentioned. The polyethylene woven fabric is made of high-density polyethylene,
The laminate layer is made of low density polyethylene,
The said reinforcing layer is comprised by linear low density polyethylene, low density polyethylene, or those combinations, The reinforcement sheet for flexible container bags as described in any one of Claims 1-6 characterized by the above-mentioned. . An inner bag made of woven fabric, and four reinforcing container sheets for flexible container bags according to any one of claims 1 to 7, each of which is formed in a substantially rectangular shape installed in the inner bag. ,
The inner bag has a bag body that is a hollow, substantially rectangular parallelepiped so as to surround the accommodation space,
The bag body has four side walls that constitute a hollow quadrangular prism that is open at both upper and lower ends,
A pair of opposite side edges of each of the four reinforcing sheets for flexible container bags, the two adjacent ones forming the four corners of the hollow quadrangular prism surrounded by the four side walls. A flexible container bag that is sewn to each side wall.

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