JP3157856U - Flexible container bag - Google Patents

Abstract

To provide a flexible container bag that prevents contents from escaping out of a container and dropping the container bag itself when a load exceeding a predetermined weight is applied.
SOLUTION: A container bag 1 is sewn to a main body portion 2 formed in a cylindrical shape, an insertion portion 5 having an insertion port 4, a bottom surface portion 7 closing a lower end 6 of the main body portion 2, and the main body portion 2. The suspension belt 10 and the reinforcing belt 11 that increases the strength of the main body 2 and the suspension belt 10 are provided. The main body portion 2 and the bottom surface portion 7 are stitched together by a stitching portion 13. When the load exceeding the predetermined weight is applied to the container bag 1, the first suture part 14 that is disconnected when the load exceeding the predetermined weight is applied to the stitching portion 13, and the suture is released even when the load exceeding the predetermined weight is applied to the container bag 1. The second stitching portion 15 is not formed.
[Selection] Figure 2

Description

  The present invention relates to a flexible container bag that prevents contents from escaping out of a container and the container bag itself from falling when a load exceeding a predetermined weight is applied.

  Flexible container bags are used to store and transport powder and granular materials. Since it is light, simple, and inexpensive, it is distributed in large quantities, so it may be used outside the original method of use, and an accident has occurred in which a flexible container bag suspended from a crane falls.

  On the other hand, in Patent Document 1, a plurality of suspension means formed in a tubular shape by laminating two belt-like plain woven fabrics and sewing them to a container bag body by sewing a loop-like engagement portion. There are some which are attached to the location, improve the strength of the suspension means, and prevent cutting when suspended.

JP-A-10-95492

  However, in the conventional flexible container bag shown above, when the hanging means itself is cut, the container bag body for the weight of all the stored contents falls, and the entire contents of the container bag are dropped on the underlying items. There is a risk that weight will be applied at once.

  An object of the present invention is to provide a flexible container bag that prevents the contents from escaping out of the container and dropping the container bag itself when a load exceeding a predetermined weight is applied. To do.

In the flexible container bag of the invention according to claim 1, a cylindrical main body portion having an inlet at one end and the other end being opened, a bottom portion closing the open portion at the other end of the main body portion, and the main body A flexible container bag configured to include a plurality of suspension belts sewn on the side surface of the part,
A stitched portion for stitching the main body portion and the bottom surface portion is formed,
When the load exceeding the predetermined weight is applied to the flexible container bag, the suture part is disengaged, and even when the load exceeding the predetermined weight is applied to the flexible container bag, the sewing can be performed. And a second stitching portion that does not come off.

  The flexible container bag of the invention according to claim 2 is characterized in that the second stitching portion is provided in a range of one half to three quarters of the outer edge of the bottom surface portion.

  In the flexible container bag of the invention according to claim 3, the first stitched portion and the second stitched portion are extended from a seam allowance formed by bending the main body portion and an outer edge of the bottom surface portion. A bottom seam allowance, and formed by stitching the main body seam allowance and the bottom seam allowance.

  In the flexible container bag of the invention according to claim 4, the first stitching portion is stitched by a main stitch, and the second stitching portion is stitched by a main stitch, a garment stitch or a chain stitch. It is characterized by that.

  In the flexible container bag of the invention according to claim 5, the first stitching portion is sewn with a thread having a strength that breaks when a load exceeding a predetermined weight is applied, and the second stitching portion is a predetermined stitching portion. It is characterized by being sewn with a thread that does not break even when a load exceeding the weight is applied.

  The flexible container bag of the invention according to claim 6 is characterized in that the first stitching portion is formed by one sewing number, and the second stitching portion is formed by a plurality of stitching numbers. .

  According to the first aspect of the present invention, the first stitching portion where the suture is removed when a load exceeding a predetermined weight is applied to the flexible container bag, and the suture is performed even when a load exceeding the predetermined weight is applied to the flexible container bag. The second stitching portion that does not come off forms a stitching portion. As a result, when the flexible container bag is suspended and transported, the safety valve is placed on the bottom surface so that the first stitching portion is detached before the container bag breaks and the heavy container bag itself falls. It is possible to secure the safety by discharging the stored items.

  In the invention according to claim 2, by providing the second stitching portion in the range of one-half to three-fourths of the outer edge of the bottom portion, the range in which the stitching of the first stitching portion is removed is adjusted, While making it easy to open a bottom face part, it can discharge appropriately, without discharging everything in a flexible container bag at once.

  According to the third aspect of the present invention, the first stitching portion and the second stitching portion are formed by stitching the main body seam allowance and the bottom seam allowance, so that the suturing operation can be surely and easily performed.

  In the invention according to claim 4, the first stitching portion is sewn with a main stitch that can be easily detached, and the second stitching portion is sewn with a main stitch and the over stitch or the chain stitch that is difficult to remove. By selecting the sewing method, it is possible to clarify the range where the first stitching part is detached, to facilitate the opening of the bottom part, and to properly drain the stored contents in the flexible container bag without draining all at once. be able to.

  According to the fifth aspect of the present invention, the first stitched portion is stitched with a thread having a strength that breaks when a load exceeding a predetermined weight is applied, and the second stitched portion is loaded with a load exceeding the predetermined weight. By stitching with a thread that does not break even when it is broken, it is possible to clarify the range where the first stitched part can be removed by selecting the thread strength, making it easier to open the bottom part and storing it in the flexible container bag It is possible to discharge properly without discharging all things at once.

  According to the sixth aspect of the present invention, the first stitching portion is formed by one stitch number, and the second stitching portion is formed by a plurality of stitch numbers, so that the first stitching portion can be selected by selecting the number of stitches. The range in which the stitches are removed can be clarified, the bottom portion can be easily opened, and the stored contents in the flexible container bag can be appropriately discharged without being discharged at a time.

It is the perspective view seen from the flexible container bag of the 1st Embodiment of this invention from the lower side. It is the perspective view which looked at the state which the stitching | suture of the 1st stitching | suture part of the flexible container bag of the 1st Embodiment of this invention removed from the lower side. It is a bottom view of the flexible container bag of the 1st Embodiment of this invention. (A) State diagram of the stitching portion of the flexible container bag according to the first embodiment of the present invention, (a) State diagram in which the main sewing is performed, (b) State diagram in which the stitching is performed after the main stitching, (c) Modification of the seam allowance of the main body portion It is. (A) State diagram of the sewing portion of the flexible container bag according to the first embodiment of the present invention, (a) State diagram in which the main sewing is performed, (b) State diagram in which the main sewing is performed and then the chain stitching is performed, (c) Main body sewing allowance It is a modified example of. The state which provided the 2nd stitching | suture part of the flexible container bag of the 1st Embodiment of this invention in the range of 3/4 of the outer edge of a bottom face part, (b) One side half of the outer edge of a bottom face part FIG. 4 is a state diagram provided in one range, (c) a state diagram provided at a diagonal of the bottom surface portion, and (d) a state diagram provided on each side of the outer edge of the bottom surface portion. It is the perspective view seen from the flexible container bag of the 2nd Embodiment of this invention from the lower side. It is a bottom view of the flexible container bag of the 2nd Embodiment of this invention. (A) State figure which provided 2nd stitching part of flexible container bag of 2nd Embodiment of this invention in range of 3/4 of outer edge of bottom face part, (b) 1/2 of outer edge of bottom face part It is the state figure provided in the range.

  1st Embodiment of the flexible container bag of this invention is described based on drawing. In the following description, the inlet 4 side described later in FIG. 1 is set as the upper side, and the bottom surface portion 7 side described later is set as the lower side.

  As shown in FIG. 1, a flexible container bag (hereinafter referred to as “container bag”) 1 includes a main body portion 2 formed in a cylindrical shape, and an input portion having an input port 4 stitched at the upper end 3 of the main body portion 2. 5, a bottom surface portion 7 that closes the lower end 6 of the main body portion 2, a suspension belt 10 stitched to the main body portion 2, and a peripheral portion of the upper end 3 to increase the strength of the main body portion 2 and the suspension belt 10. And a reinforcing belt 11.

  As shown in FIG. 1, the main body 2 is formed by seamlessly forming a sheet of polypropylene or the like into a cylindrical shape, forming a boundary line 8 by crease along the vertical direction, and the cross section in a plan view is rectangular. Is formed. The main body 2 is composed of side portions 9 a, 9 b, 9 c, 9 d that are partitioned by a boundary line 8.

  As shown in FIG. 1, the charging unit 5 is formed in a rectangular tube shape in which a polyethylene sheet or the like is seamless and the upper part is reduced in diameter. At the upper part of the reduced-diameter input portion 5, a rectangular input port 4 for supplying the stored items is provided. The lower portion of the insertion portion 5 is connected to the main body portion 2 by sewing.

  As shown in FIGS. 1 and 3, the bottom surface portion 7 is formed by cutting a sheet of polypropylene or the like into a rectangular shape. The main body portion 2 and the bottom surface portion 7 are stitched together by a stitching portion 13. The stitching portion 13 includes a first stitching portion 14 that is unfastened when a load exceeding a predetermined weight is applied to the container bag 1, and the stitching is not removed when a load exceeding a predetermined weight is applied to the container bag 1. And a second stitching portion 15. Here, the “load exceeding a predetermined weight” refers to a load that exceeds the weight at which the container bag is broken due to breakage of the container bag during transportation.

  As shown in FIGS. 4 (a) and 4 (b), the first stitching portion 14 and the second stitching portion 15 include a main body seam allowance 16 formed by bending the lower end 6 portion of the main body portion 2, and the bottom surface portion 7. The bottom surface portion seam allowance 17 extending from the outer edge of the sewing machine is opposed to and sewn.

  As shown in FIG. 4A, the first stitching portion 14 is formed by a main stitch 18 that sews through the main body stitching allowance 16 and the bottom stitching allowance 17 that face each other. As shown in FIGS. 4 (a) and 4 (b), the second stitching portion 15 has a main stitch 18 and a main seam allowance 16 facing each other so as to overlap the portion where the main stitch 18 is made. The edge portion of the bottom portion seam allowance 17 is formed by an overlock stitch 19. As shown in FIG. 3, the first stitching portion 14 is formed along a half range of the outer edge of the bottom surface portion 7. The second stitching portion 15 is formed along a half range of the outer edge of the bottom surface portion 7.

  As shown in FIG. 1, the suspension belt 10 is made of polypropylene or the like and is formed in a band shape. The side part 9a and the side part 9b, the side part 9b and the side part 9c, and the side part of the main body part 2 which are formed by being bent in a substantially U shape at the center part in the longitudinal direction of the suspension belt 10 and sandwiching the boundary line 8. Both ends are sewn at a total of eight locations, 9c and side surface portion 9d, and side surface portion 9a and side surface portion 9d.

  As shown in FIG. 1, the reinforcing belt 11 is made of polypropylene or the like and is formed in a band shape, and is provided on the upper end 3 of the main body 2 along the circumferential direction. The reinforcing belt 11 is formed by stitching so as to overlap the stitched portions of the main body 2 and the insertion portion 5 and is stitched so as to overlap the suspension belt 10.

  The usage method and operation of the container bag 1 configured as described above will be described below.

  The container bag 1 is in a state as shown in FIG. 1 and the suspension belt 10 is engaged with a fork of a forklift (not shown), a hook of a crane, etc. The container bag 1 is charged from the charging port 4. After the charging, the container bag 1 is transported by a forklift or a crane in a suspended state.

  When a load exceeding a predetermined weight is applied to the container bag 1, as shown in FIG. 2, a main stitch 18 having a weak seam of the first stitching portion 14 is conveyed when transported in a suspended state. Only the stitches are removed, and the stitches of the second stitched portion 15 with strong seams 19 are not removed, so that the stitches of the main stitches 18 are not removed. The stored contents such as the granular material are discharged from the container bag 1. In FIG. 3, a portion surrounded by the two-dot chain line and the first stitching portion 14 is a portion that is opened when a load exceeding a predetermined weight is applied.

  The container bag 1 of the present embodiment has a first stitching portion 14 that is unfastened when a load exceeding a predetermined weight is applied to the container bag 1 and a load that exceeds the predetermined weight is applied to the container bag 1. However, by forming the stitching portion 13 with the second stitching portion 15 from which the stitching does not come off, the container bag 1 is damaged and heavy when the container bag 1 is transported by hanging with a forklift or a crane. Before the container bag 1 itself falls, the bottom portion 7 has a function as a safety valve so that the first stitching portion 14 can be detached, and the stored items such as the granular material that has been thrown in are discharged to be safe. Can be secured.

  Further, by providing the second stitching portion 15 along a half range of the outer edge of the bottom surface portion 7, the range where the stitching of the first stitching portion 14 is removed is adjusted, and the bottom surface portion 7 is opened. In addition to facilitating the discharge, it is possible to properly discharge the stored items in the container bag 1 without discharging all of the stored items at once.

  By forming the first stitching portion 14 and the second stitching portion 15 by stitching the main body portion seam allowance 16 and the bottom surface seam allowance 17, the suturing operation can be surely and easily performed.

  The first stitching portion 14 is sewn with a main stitch 18 that can be easily detached, and the second stitching portion 15 is stitched with a main stitch 18 and an overlock stitch 19 that is difficult to remove. The range in which the 14 stitches are released can be clarified, the bottom surface portion 7 can be easily opened, and the stored items in the container bag 1 can be appropriately discharged without being discharged all at once.

  A modification of the stitching portion 13 of the first embodiment will be described based on the drawings. As shown in FIG. 5A, the first stitching portion 14 is formed by a main stitch 18 that sews through the main body stitching allowance 16 and the bottom stitching margin 17 that face each other. As shown in FIGS. 5 (a) and 5 (b), the second stitching portion 15 has a main stitch 18 and a main seam allowance 16 facing each other so as to overlap the portion where the main stitch 18 is made. It is formed by a chain stitch 20 that sews the bottom seam allowance 17 in a chain shape.

  The modification of the 2nd stitching part 15 in a 1st embodiment is explained based on a drawing. As shown in FIG. 6A, the second stitching portion 151 is formed by the overlock stitch 19 or the ring stitch 20 along the range of three quarters of the outer edge of the bottom surface portion 7. As another modified example, as shown in FIG. 6B, the second stitching portion 152 is formed by the overlock stitch 19 or the ring stitch 20 along the range of one half of the outer edge of the bottom surface portion 7. As another modified example, as shown in FIG. 6C, the second stitching portion 153 is formed by an overlock stitch 19 or a ring stitch 20 at one of two diagonal portions. As another modified example, as shown in FIG. 6 (d), the second stitching portion 154 is formed by the overlock stitch 19 or the ring stitch 20 at the central portion of the four sides forming the outer edge of the bottom surface portion 7. Yes. 6 (a), (b), (c), and (d), a portion surrounded by a two-dot chain line and the first stitching portion 14 is a portion that is opened when a load exceeding a predetermined weight is applied. It is.

  2nd Embodiment of the flexible container bag of this invention is described based on drawing. In the following description, the inlet 4A side, which will be described later in FIG. 7, is the upper side, and the bottom surface part 7A side, which will be described later, is the lower side.

  As shown in FIG. 7, the container bag 1A has a cylindrical main body portion 2A, an insertion portion 5A that is stitched at the upper end 3A of the main body portion 2A and has an input port 4A, and a lower end 6A of the main body portion 2A. Bottom surface portion 7A, suspension belt 10A sewn to main body portion 2A, and reinforcing belt 11A that is disposed on the peripheral edge portion of upper end 3A and increases the strength of main body portion 2A and suspension belt 10A. ing.

  As shown in FIG. 7, the main body 2 </ b> A has a sheet of polypropylene or the like formed seamlessly in a cylindrical shape.

  As shown in FIG. 7, the input portion 5 </ b> A is made of a sheet made of polyethylene or the like that is seamless and cylindrical. A circular insertion port 4A through which a stored item is input is provided at the top of the input unit 5A. The lower portion of the insertion portion 5A is sewn and connected to the main body portion 2A.

  As shown in FIGS. 7 and 8, the bottom surface portion 7A is formed by cutting a sheet of polypropylene or the like into a circular shape. The main body portion 2A and the bottom surface portion 7A are stitched together by a stitching portion 13A. The stitching portion 13A includes a first stitching portion 14A in which the stitching is released when a load exceeding a predetermined weight is applied to the container bag 1A, and the stitching is released even when a load exceeding the predetermined weight is applied to the container bag 1A. And a second stitched portion 15A not formed.

  The difference between the shape of the main seam allowance 16A and the bottom seam allowance 17A is that the main seam 2A is cylindrical and the shape of the bottom surface 7A is circular. Except for the above, it is formed in the same manner as shown in FIGS. 4A and 4B in the first embodiment. As shown in FIG. 8, the first stitching portion 14A is formed along a half range of the outer edge of the bottom surface portion 7A. The second stitching portion 15A is formed along a half range of the outer edge of the bottom surface portion 7A.

  As shown in FIG. 7, the suspension belt 10 </ b> A is made of polyethylene or the like and is formed in a belt shape. The suspension belt 10A is formed by being bent into a substantially U shape at the center in the longitudinal direction, and both ends are sewn at a total of eight locations on the side surface of the main body 2A.

  As shown in FIG. 7, the reinforcing belt 11A is provided on the upper end 3A of the main body 2A along the circumferential direction. The reinforcing belt 11A is formed by stitching so as to overlap the stitched portions of the main body 2A and the insertion portion 5A, and is stitched so as to overlap the suspension belt 10A.

  The usage method and operation of the container bag 1A configured as described above will be described below.

  The suspension belt 10A is kept in the state shown in FIG. 7, and the container bag 1A is suspended by engaging with the fork of the forklift, the hook of the crane, etc. Put in 1A. After charging, the container bag 1A is transported by a forklift or a crane in a suspended state.

  When a load exceeding a predetermined weight is applied to the container bag 1A, the first stitching portion 14A is used when the container bag 1A is transported in a suspended state, similar to the one shown in FIG. 2 in the first embodiment. Therefore, the closed bottom surface portion 7A is opened, and the stored contents such as the granular material are discharged from the container bag 1A. . In FIG. 8, the portion surrounded by the two-dot chain line and the first stitching portion 14A is a portion that is opened when a load exceeding a predetermined weight is applied.

  The container bag 1A of the present embodiment has a first stitching portion 14A that is sewn when a load exceeding a predetermined weight is applied to the container bag 1A, and a load that exceeds a predetermined weight is applied to the container bag 1A. However, by forming the stitching portion 13A with the second stitching portion 15A from which the suture is not removed, the container bag 1A is damaged and heavy when the container bag 1A is suspended and transported by a forklift or a crane. Before the container bag 1A itself falls, the bottom portion 7A has a function as a safety valve so that the stitching of the first stitching portion 14A can be removed, and the stored items such as the granular material that has been thrown in are discharged safely. Can be secured.

  Further, by providing the second stitching portion 15A along one half of the outer edge of the bottom surface portion 7A, the range where the stitching of the first stitching portion 14A is removed is adjusted, and the bottom surface portion 7A is opened. In addition to facilitating the discharge, it is possible to properly discharge the stored items in the container bag 1A without discharging all of the stored items at once.

  By forming the first stitching portion 14A and the second stitching portion 15A by stitching the main body portion seam allowance 16A and the bottom surface seam allowance 17A, the suturing operation can be surely and easily performed.

  The first stitching portion 14A is sewn with a main stitch 18A that can be easily detached, and the second stitching portion 15A is stitched with a main stitch 18A and a chain stitch 20A that is difficult to remove. The range in which the stitches of 14A can be removed can be clarified, the bottom surface portion 7A can be easily opened, and the stored items in the container bag 1A can be appropriately discharged without being discharged all at once.

 A modification of the second stitching portion 15A in the second embodiment will be described with reference to the drawings. As shown in FIG. 9 (a), the second stitching portion 151A is formed by overlock stitching 19A or chain stitching 20A along the three-quarter range of the outer edge of the bottom surface portion 7A. As another modified example, as shown in FIG. 9 (b), the second stitching portion 152A is formed by the overlock stitch 19A or the ring stitch 20A so that the parenthesis is opposed to the outer edge of the bottom surface portion 7A. 9A and 9B, the portion surrounded by the two-dot chain line and the first stitching portion 14A is a portion that is opened when a load exceeding a predetermined weight is applied.

  The first stitching portion 14 and the first stitching portion 14A according to the present invention are stitched with a thread having a strength that breaks when a load exceeding a predetermined weight is applied, and the second stitching portion 15 and the second stitching portion 14A are sewn. The portion 15A may be sewn with a thread that does not break even when a load exceeding a predetermined weight is applied.

  This makes it possible to clarify the range in which the stitching of the first stitching portion 14 and the first stitching portion 14A is released by selecting the strength of the thread, making it easy to open the bottom surface portions 7 and 7A, and the respective flexible containers. The stored items in the bags 1 and 1A can be appropriately discharged without being discharged all at once.

  Further, the first stitching portion 14 and the first stitching portion 14A in the present invention are formed by one sewing number, and the second stitching portion 15 and the second stitching portion 15A are formed by a plurality of stitching numbers. May be.

  Thereby, the range in which the first stitched portion and the first stitched portion 14A can be detached can be clarified by selecting the number of stitches, the bottom surface portions 7 and 7A can be easily opened, and each flexible container bag 1 can be opened. It is possible to properly discharge the stored items in 1A without discharging all of the stored items at once.

  The main body seam allowance 16 in the present invention may be formed by bending the main body portion 2 to the outside after being bent outside the main body portion 2 as shown in FIGS. 4 (c) and 5 (c). The main body seam allowance 16A may also be formed in the same manner as shown in FIGS. 4 (c) and 5 (c).

  Further, the main body seam allowance 16 and the bottom surface seam allowance 17 may be folded and stitched inside the main body 2, or the main body seam allowance 16A and the bottom seam allowance 17A may be folded radially inside the main body 2A and sewn. Good.

  The cross section of the main body 2 in plan view may be formed in a polygonal shape such as a triangle, a pentagon, or a hexagon. The cross section of the main body 2A in plan view may be formed in an elliptical shape.

DESCRIPTION OF SYMBOLS 1, 1A Flexible container bag 2, 2A Main body part 4, 4A Input port 7, 7A Bottom face part 9a, 9b, 9c, 9e, 9A Side face part 10, 10A Suspension belt 13, 13A Suture part 14, 14A 1st stitch part 15, 15A, 151, 152, 153, 154, 151A, 152A Second stitching portion 16, 16A Main body stitching allowance 17, 17A Bottom stitching margin 18, 18A Main stitching 19, 19A Overlock stitching 20, 20A Ring stitching

Claims (6)

A cylindrical main body having an insertion port at one end and the other end being open; a bottom surface closing the open part at the other end of the main body; and a plurality of suspension belts sewn on the side of the main body A flexible container bag comprising:
A stitched portion for stitching the main body portion and the bottom surface portion is formed,
When the load exceeding the predetermined weight is applied to the flexible container bag, the suture part is disengaged, and even when the load exceeding the predetermined weight is applied to the flexible container bag, the sewing can be performed. A flexible container bag comprising a second stitching portion that does not come off.   The flexible container bag according to claim 1, wherein the second stitching portion is provided in a range of one half to three quarters of an outer edge of the bottom surface portion. The first stitching portion and the second stitching portion are configured to include a body portion seam allowance formed by bending the body portion and a bottom surface seam allowance extending from the outer edge of the bottom surface portion,
The flexible container bag according to claim 1, wherein the body portion seam allowance and the bottom surface seam allowance are sewn. The first stitched portion is sewn with a main stitch;
4. The flexible container bag according to claim 1, wherein the second stitching portion is sewn with a main stitch, an over stitch or a chain stitch. 5. The first stitched portion is stitched with a thread having a strength that breaks when a load exceeding a predetermined weight is applied,
4. The flexible container bag according to claim 1, wherein the second stitching portion is stitched with a thread having a strength that does not break even when a load exceeding a predetermined weight is applied. The first stitching portion is formed with one stitch number,
The flexible container bag according to claim 1, wherein the second stitching portion is formed by a plurality of stitches.

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