CA1036993A - Shipping bag - Google Patents
Shipping bagInfo
- Publication number
- CA1036993A CA1036993A CA219,567A CA219567A CA1036993A CA 1036993 A CA1036993 A CA 1036993A CA 219567 A CA219567 A CA 219567A CA 1036993 A CA1036993 A CA 1036993A
- Authority
- CA
- Canada
- Prior art keywords
- bag
- corner
- corner portions
- casing
- shipping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000005192 partition Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000008187 granular material Substances 0.000 claims abstract description 8
- 239000000543 intermediate Substances 0.000 claims 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Bag Frames (AREA)
- Packages (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A shipping bag for powder of granular material which is comprised of a square external bag of flexible sheet having on inlet at its top end and an outlet at its bottom end and a cylindrical internal casing of the same mate-rial as that of the external bag, said cylindrical internal casing at its cir-cumferencer being joined with an inner wall of the external bag to form four corner spaces through four partitions of unjoined circumference of the internal casing which are respectively provided with a number of slits in multistage for passing the material into the corner spaces.
A shipping bag for powder of granular material which is comprised of a square external bag of flexible sheet having on inlet at its top end and an outlet at its bottom end and a cylindrical internal casing of the same mate-rial as that of the external bag, said cylindrical internal casing at its cir-cumferencer being joined with an inner wall of the external bag to form four corner spaces through four partitions of unjoined circumference of the internal casing which are respectively provided with a number of slits in multistage for passing the material into the corner spaces.
Description
li1036993 a This invention relates to an improved shipping bag for powder or 3 granular material.
4 ¦ To obtain a desired labor saving effect in the transportation of S the powder or granular material, there has been a bulk cargo system where the 6 ¦powder material is directly loaded on the transportation means such as ship, 7 vehicle and the like which are likely confronted with a risk of upsetting when 8 ¦the ship or vehicle lists on running with movement of the goods along the list-9 ing direction.
In order to avoid the foregoing risk, a various types of the shipping 11 containers in convenient shape and size for transportation have been proposed 12 and practised.
13 The shipping container of square shape including cubic or rectangular 14 shape is preferred to maximize the load capacity, notwithstanding the convent-ional cubic or rectangular container is insuffi~ient to obtain a maximum load . capacity as the container when filled with the material is deformed under the 17 pressure of the material into a cylindrical shape which when stacked in the 18 hatch produces undesired spaces with reduction of the load capacity.
i9 To improve the above disadvantages and inconveniences, the inventor has developed a new shipping container which even when filled with the material 21 is susceptible to maintain a prototype of ~e square container and generally 22 comprises a square bag made of soft and tough sheet having an inlet at its top 23 end and an outlet at its bottom end. Four corner portions of the square bag 24 are partitioned respectively through four rectangular sheet pieces to form four corner spaces and individual sheet piece at its opposite ends is joined with 26 the adjoining inner walls of the square bag and provided with a number of slits 27 in multistage for passing the material into the corner space so that the bag 28 ¦ even when filled with the material is maintained in a square form.
29 However, the shipping container of the aforementioned type has confron ed with nconvenienco in nJnufacture since the partit-~n piece ~ust be I
1 strongly joined w~th the inner walls of the square bag to avoid removal of the
4 ¦ To obtain a desired labor saving effect in the transportation of S the powder or granular material, there has been a bulk cargo system where the 6 ¦powder material is directly loaded on the transportation means such as ship, 7 vehicle and the like which are likely confronted with a risk of upsetting when 8 ¦the ship or vehicle lists on running with movement of the goods along the list-9 ing direction.
In order to avoid the foregoing risk, a various types of the shipping 11 containers in convenient shape and size for transportation have been proposed 12 and practised.
13 The shipping container of square shape including cubic or rectangular 14 shape is preferred to maximize the load capacity, notwithstanding the convent-ional cubic or rectangular container is insuffi~ient to obtain a maximum load . capacity as the container when filled with the material is deformed under the 17 pressure of the material into a cylindrical shape which when stacked in the 18 hatch produces undesired spaces with reduction of the load capacity.
i9 To improve the above disadvantages and inconveniences, the inventor has developed a new shipping container which even when filled with the material 21 is susceptible to maintain a prototype of ~e square container and generally 22 comprises a square bag made of soft and tough sheet having an inlet at its top 23 end and an outlet at its bottom end. Four corner portions of the square bag 24 are partitioned respectively through four rectangular sheet pieces to form four corner spaces and individual sheet piece at its opposite ends is joined with 26 the adjoining inner walls of the square bag and provided with a number of slits 27 in multistage for passing the material into the corner space so that the bag 28 ¦ even when filled with the material is maintained in a square form.
29 However, the shipping container of the aforementioned type has confron ed with nconvenienco in nJnufacture since the partit-~n piece ~ust be I
1 strongly joined w~th the inner walls of the square bag to avoid removal of the
2 partition piece therefrom to be caused under the pressure of the material fille~
3 in the bag.
4 To improve the foregoing deffects, there is provided a further improved bag which is comprised of a square external bag of flexible s'heet 6 having an inlet at its top end and an outlet at its bottom end and a cylindrica~
7 ¦ internal casing of the same material as that of the external bag. The cylindric-8 ¦ al internal casing at its circumference is joined wqth four inner walls of the 9 external bag to form four corner spaces through four partitions of unjoined circumference of the internal casing and the partitions are respectively 11 provided with a number of slits in multistage for passing the material uniformly 12 into the corner spaces so that the bag when filled with the material retains a 13 prototype of the square bag for convenient stacking of the shipping bags with 14 an enhanced load capacity. The shipping bag of this type is very convenient in lS manufacture and there is no likelihood of removal of the internal casing fram i6 the bag under the pressure of the filled material.
17 SUMMARY OF THE INN~NTION
18 It is, therefore, a general object of the invention to provide a 19 novel shi~ping bag of simple structure but having an improved strength and prototype retaining property with an enhanced load capacity which'is also 21 convenient in manufacture 22 A principal object of the invention is to provide a shipping bag 23 for powder or granular material which is comprised of a square external bag of 24 flexible sheet having an inlet at its top end and an outlet at its bottom end and a cylindrical internal casing of the same material as that of the external 26 bag, said cylindrical internal casing at its circumference being joined with 27 four inner walls of the external bag to form four corner spaces through four 28 partitions of unjoined circumference of the casing which are respectively 29 provided with a number of slits in multistage for passing the material into the corner spaces.
l - 3 -.
According to the present invention there is provided a shipping bag for powdered granular material which comprises an outer enclosure of flexible sheet material having an inner wall defining a chamber of rectanqular cross section, said inner wall having four corner portions and planar sections intermediate said corner portions, the diametric distance between opposed planar sections beinq less than the diametric distance between opposed corner portions, an inner cylindrical casing of the !~ same material as said outer enclosure and being coaxially dis-posed therewithin and joined at its circumference in seallng relation only to said planar sections of said inner wall inter-~ mediate said corner portions thereof leaving thereby four corner ! spaces each hounded by a corner portion and that part of said . inner casino forming a partition, spaced from the corner portion, , each partition being formed with openings to enable passage of granular material, when pre.sent in the inner casing, from the inner casing through said openings into said corner portions, a bag inlet communicating with an upper end of the inner casing enabling the charging of a powder material thereinto, and a bag outlet communicating with d bottom end of said inner casing en-abling discharge of a powder material therefrom, covering means .~
for covering said inlet and a closure means for closing off . said outlet.
For a fuller understanding of the present invention reference should now be had to the following detailed description thereof taken in conjunction with the accompanying drawings, -~ wherein:
-~ Figure 1 is a perspective view of the shipping bag in accordance witll the present invention;
Figure 2 is a sectional view of the bag taken along f the line II-II of Figure 1 showing an inlet and an outlet in opened positions;
Figure 3 is a perspective view of the bag of Figure 1 'rl ~
.. - 4 -103~;~93 which is partially broken away to show an internal casing positioned in the ha(~;
Ei~ure 4 is a sectional view of the bag taken along the line IV-IV of Figure l; and Figure 5 is a sectional view of the ba~ similar to Figure 4 but showing another embodiment.
In Figures 1 to A, the reference numeral 10 represents a square shippin~ bag made of plastic and synthetic sheet, for example, PVC tarpaulin, EVA tarpaulin, rubber tarpaulin and canvas tarpaulin which is provided with an inlet 12 at its top end and an outlet 14 at its bottom end. From the inlet 12 is extended a square or cylindrical sleeve 16 of the same material as that of the shipping bag for smooth packing of the material thereinto. Adjacent to the sleeve 16 is positioned a covering 18 for closing the inlet 12 when the sleeve 16 is folded into ~ the inlet. Similarly, from the outlet 14 is extended a square J or cylindrical sleeve 20 which is provided with a convenient fastening means 22 as shown in Figure 2.
¦ The bag 10 at its opposite sides is provided with longitudinally extended lifting helts 24, 24 to which a rop is connected for convenience in loading or unloading of the shipping 3 bag by means of the crane and the like.
- 4a -l In the bag lO is unted a cylindrical internal casing 26 of 2 plastic and synthetic sheet which at the positions 26a, 26b, 26c and 26d is 3 joined with the inner wall of the bag lO by means of thc welding, bonding or 4 seaming process to form the corner spaces 28a, 28b, 28c and 28d through parti-S tions 27a, 27b, 27c and 27d which are provided with a number of slits 30 in 6 ¦multistage through which the corner spaces 28a, 28b, 28c and 28d are c c unica-7 ¦ ted respectively with the inside of the internal casing 26 so that the material 8 filled in the casing 26 flows uniformly and slowly into the corner spaces 28a, 9 28b, 28c and 28d to retain the prototype of the shipping bag even after filled ¦with the material. Since the material in the internal casing 26 flows slowly 11 and uniformly through the slits 30 into the corner spaces 28a, 28b, 28c and 12 ¦28d, an undesired coagulation of the powder material which is usuàlly developed 13 due to a concentration of the pressure at the corner portions is positively 14 ¦prevented with a smooth delivery operation of the material.
lS ¦ It will be appreciated that the inner casing 26 per se has a 16 ¦strength sufficient t3 withstand against the pressure b the filled material 17 ¦and may be readily attached to the shipping b?g by means of the conventional 18 ¦joint process.
i9 The length of the inner sleeve 26 is preferably shorter than that of the bag lO so that an upper space 32a and a lower space 32b are ~ormed in the21 ¦bag lO as shown in Figure 2 for achieving a smooth charging and discharging 22 ¦operation of the material into and from the sleeve 26 as well as the-corner 23~ ¦spaces 28a, 28b, 28c and 28d.
24 ¦ Figure 5 shows another embodiment of the invention in which ; ¦additional partition pieces 34a, 34b, 34c and 34d each having a number of slits 136 in multistage are provided to form double corner spaces 38a, 38b, 38c and 27 ¦38d which serves to control movement of the material flown in the corner spaces 28 ¦28a, 28b, 28c and 28d thereby to reduce the pressure of the material against the 29 ¦corner portions of the bag.
As hereinbefore fully described, the shipping container in accordanoe
7 ¦ internal casing of the same material as that of the external bag. The cylindric-8 ¦ al internal casing at its circumference is joined wqth four inner walls of the 9 external bag to form four corner spaces through four partitions of unjoined circumference of the internal casing and the partitions are respectively 11 provided with a number of slits in multistage for passing the material uniformly 12 into the corner spaces so that the bag when filled with the material retains a 13 prototype of the square bag for convenient stacking of the shipping bags with 14 an enhanced load capacity. The shipping bag of this type is very convenient in lS manufacture and there is no likelihood of removal of the internal casing fram i6 the bag under the pressure of the filled material.
17 SUMMARY OF THE INN~NTION
18 It is, therefore, a general object of the invention to provide a 19 novel shi~ping bag of simple structure but having an improved strength and prototype retaining property with an enhanced load capacity which'is also 21 convenient in manufacture 22 A principal object of the invention is to provide a shipping bag 23 for powder or granular material which is comprised of a square external bag of 24 flexible sheet having an inlet at its top end and an outlet at its bottom end and a cylindrical internal casing of the same material as that of the external 26 bag, said cylindrical internal casing at its circumference being joined with 27 four inner walls of the external bag to form four corner spaces through four 28 partitions of unjoined circumference of the casing which are respectively 29 provided with a number of slits in multistage for passing the material into the corner spaces.
l - 3 -.
According to the present invention there is provided a shipping bag for powdered granular material which comprises an outer enclosure of flexible sheet material having an inner wall defining a chamber of rectanqular cross section, said inner wall having four corner portions and planar sections intermediate said corner portions, the diametric distance between opposed planar sections beinq less than the diametric distance between opposed corner portions, an inner cylindrical casing of the !~ same material as said outer enclosure and being coaxially dis-posed therewithin and joined at its circumference in seallng relation only to said planar sections of said inner wall inter-~ mediate said corner portions thereof leaving thereby four corner ! spaces each hounded by a corner portion and that part of said . inner casino forming a partition, spaced from the corner portion, , each partition being formed with openings to enable passage of granular material, when pre.sent in the inner casing, from the inner casing through said openings into said corner portions, a bag inlet communicating with an upper end of the inner casing enabling the charging of a powder material thereinto, and a bag outlet communicating with d bottom end of said inner casing en-abling discharge of a powder material therefrom, covering means .~
for covering said inlet and a closure means for closing off . said outlet.
For a fuller understanding of the present invention reference should now be had to the following detailed description thereof taken in conjunction with the accompanying drawings, -~ wherein:
-~ Figure 1 is a perspective view of the shipping bag in accordance witll the present invention;
Figure 2 is a sectional view of the bag taken along f the line II-II of Figure 1 showing an inlet and an outlet in opened positions;
Figure 3 is a perspective view of the bag of Figure 1 'rl ~
.. - 4 -103~;~93 which is partially broken away to show an internal casing positioned in the ha(~;
Ei~ure 4 is a sectional view of the bag taken along the line IV-IV of Figure l; and Figure 5 is a sectional view of the ba~ similar to Figure 4 but showing another embodiment.
In Figures 1 to A, the reference numeral 10 represents a square shippin~ bag made of plastic and synthetic sheet, for example, PVC tarpaulin, EVA tarpaulin, rubber tarpaulin and canvas tarpaulin which is provided with an inlet 12 at its top end and an outlet 14 at its bottom end. From the inlet 12 is extended a square or cylindrical sleeve 16 of the same material as that of the shipping bag for smooth packing of the material thereinto. Adjacent to the sleeve 16 is positioned a covering 18 for closing the inlet 12 when the sleeve 16 is folded into ~ the inlet. Similarly, from the outlet 14 is extended a square J or cylindrical sleeve 20 which is provided with a convenient fastening means 22 as shown in Figure 2.
¦ The bag 10 at its opposite sides is provided with longitudinally extended lifting helts 24, 24 to which a rop is connected for convenience in loading or unloading of the shipping 3 bag by means of the crane and the like.
- 4a -l In the bag lO is unted a cylindrical internal casing 26 of 2 plastic and synthetic sheet which at the positions 26a, 26b, 26c and 26d is 3 joined with the inner wall of the bag lO by means of thc welding, bonding or 4 seaming process to form the corner spaces 28a, 28b, 28c and 28d through parti-S tions 27a, 27b, 27c and 27d which are provided with a number of slits 30 in 6 ¦multistage through which the corner spaces 28a, 28b, 28c and 28d are c c unica-7 ¦ ted respectively with the inside of the internal casing 26 so that the material 8 filled in the casing 26 flows uniformly and slowly into the corner spaces 28a, 9 28b, 28c and 28d to retain the prototype of the shipping bag even after filled ¦with the material. Since the material in the internal casing 26 flows slowly 11 and uniformly through the slits 30 into the corner spaces 28a, 28b, 28c and 12 ¦28d, an undesired coagulation of the powder material which is usuàlly developed 13 due to a concentration of the pressure at the corner portions is positively 14 ¦prevented with a smooth delivery operation of the material.
lS ¦ It will be appreciated that the inner casing 26 per se has a 16 ¦strength sufficient t3 withstand against the pressure b the filled material 17 ¦and may be readily attached to the shipping b?g by means of the conventional 18 ¦joint process.
i9 The length of the inner sleeve 26 is preferably shorter than that of the bag lO so that an upper space 32a and a lower space 32b are ~ormed in the21 ¦bag lO as shown in Figure 2 for achieving a smooth charging and discharging 22 ¦operation of the material into and from the sleeve 26 as well as the-corner 23~ ¦spaces 28a, 28b, 28c and 28d.
24 ¦ Figure 5 shows another embodiment of the invention in which ; ¦additional partition pieces 34a, 34b, 34c and 34d each having a number of slits 136 in multistage are provided to form double corner spaces 38a, 38b, 38c and 27 ¦38d which serves to control movement of the material flown in the corner spaces 28 ¦28a, 28b, 28c and 28d thereby to reduce the pressure of the material against the 29 ¦corner portions of the bag.
As hereinbefore fully described, the shipping container in accordanoe
- 5 -1 with the present invention may remarkably enhance the loading capacity when 2 stacked in the hatch of the transportation means such as ship and vehicle with 3 improved labor saving effects.
While certain preferTed embodiments of the invention have been ¦ illustrated by way of example in the drawings and particularly.described, it
While certain preferTed embodiments of the invention have been ¦ illustrated by way of example in the drawings and particularly.described, it
6 ¦ will be understood that various modifications may be made in the construction
7 and that the invention is no way limited to the embodiments shown. For exa~ple,
8 ¦ the cylindrical internal casing used in the invention may be formed either by ~ aYtrud Dg m to s Dgle s~eeve or seamLng s~eet into a sleeve, 6 ' 22 . . .
.~3., " .
.
': ~ . .
27 .
i
.~3., " .
.
': ~ . .
27 .
i
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A shipping bag for powdered granular material which comprises an outer enclosure of flexible sheet material having an inner wall defining a chamber of rectangular cross section, said inner wall having four corner portions and planar sections intermediate said corner portions, the diametric distance between opposed planar sections being less than the diametric distance between opposed corner portions, an inner cylindrical casing of the same material as said outer enclosure and being coaxially disposed therewithin and joined at its circumference in sealing relation only to said planar sections of said inner wall inter-mediate said corner portions thereof leaving thereby four corner spaces each bounded by a corner portion and that part of said inner casing forming a partition, spaced from the corner portion, each partition being formed with openings to enable passage of granular material, when present in the inner casing, from the casing through said openings into said corner portions, a bag inlet communicating with an upper end of the inner casing enabl-ing the charging of a powder material thereinto, and a bag outlet communicating with a bottom end of said inner casing enabling discharge of a powder material thereform, covering means for covering said inlet and a closure means for closing off said outlet.
2. A shipping bag as claimed in claim 1, wherein the length of the inner casing is shorter than that of the outer enclosure to provide an upper space and a lower space in the bag.
3. A shipping bag as claimed in claim 1 wherein there are provided additional partitions, each formed with a plurality of slits, in the four corner spaces to form double spaces in said corner portions of the external bag.
4. A shipping bag as claimed in claim 1, wherein lifting means are provided at opposed sides of the outer wall of the outer enclosure for enabling lifting movement of the bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA219,567A CA1036993A (en) | 1975-02-07 | 1975-02-07 | Shipping bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA219,567A CA1036993A (en) | 1975-02-07 | 1975-02-07 | Shipping bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1036993A true CA1036993A (en) | 1978-08-22 |
Family
ID=4102227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA219,567A Expired CA1036993A (en) | 1975-02-07 | 1975-02-07 | Shipping bag |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1036993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982900A (en) * | 1988-05-16 | 1991-01-08 | Blake William S | Trigger sprayer |
-
1975
- 1975-02-07 CA CA219,567A patent/CA1036993A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982900A (en) * | 1988-05-16 | 1991-01-08 | Blake William S | Trigger sprayer |
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