CA2538977A1 - Anti-incendiary flexible intermediate bulk container system - Google Patents
Anti-incendiary flexible intermediate bulk container system Download PDFInfo
- Publication number
- CA2538977A1 CA2538977A1 CA002538977A CA2538977A CA2538977A1 CA 2538977 A1 CA2538977 A1 CA 2538977A1 CA 002538977 A CA002538977 A CA 002538977A CA 2538977 A CA2538977 A CA 2538977A CA 2538977 A1 CA2538977 A1 CA 2538977A1
- Authority
- CA
- Canada
- Prior art keywords
- fabric
- conductive
- quasi
- type flexible
- container according
- 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.)
- Granted
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- Woven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The present invention provides for an antistatic flexible fabric material (10) formed from woven, axially oriented crystalline polypropylene yarn (11,12) having a coating of flexible thermoplastic polymer or blend (22) on one or both sides. The fabric may also contain a layer of cellulose material (24) laminated to the uncoated side. Antistatic properties are imparted to the fabric by including a polyol ester of a C10 to C28 fatty acid in the coating and optionally in the polypropylene yarn (11, 12). The present invention also provides for a quasi-conductive woven fabric section including quasi-conductive fibers which reduce the potential for incendiary discharge. The woven fabric section (10) may further include an antistatic coating. The coating may be applied to an entire surface of the woven fabric section or it may coat about one-half of the section.
Claims (17)
1. Fabric for use in an ungrounded type flexible fabric container with a reduced energy of electrostatic discharge for use in a combustible environment comprising:
a woven fabric configured to form the flexible fabric container; and said woven fabric having an electrical resistivity to allow the flow of electricity through the fabric at a rate to of discharge of below about one-hundred nanocoulombs per individual discharge with the fabric charged at greater than about negative ten thousand volts.
a woven fabric configured to form the flexible fabric container; and said woven fabric having an electrical resistivity to allow the flow of electricity through the fabric at a rate to of discharge of below about one-hundred nanocoulombs per individual discharge with the fabric charged at greater than about negative ten thousand volts.
2. The fabric for use in an ungrounded type flexible fabric container according to claim 1, wherein said woven fabric has an electrical resistivity to allow the flow of electricity through the fabric at a rate of discharge of less than about 15 nanocoulombs per individual discharge with the fabric charged at greater than about negative ten thousand volts.
3. The fabric for use in an ungrounded type flexible fabric container according to claim 1, wherein said woven fabric comprises:
a plurality of quasi-conductive fibers positioned preferably about one-half to about four inches apart from one another, each of said quasi-conductive fibers being configured to effect corona discharge such as at their ends or at other discharge points, and having sufficient resistance to substantially avoid incendiary discharge at their ends or along their lengths at a rate that results in incendiary type discharges from said fabric in use in an ungrounded type flexible fabric container in a combustible environment having a minimum ignition energy of 0.25 mT.
a plurality of quasi-conductive fibers positioned preferably about one-half to about four inches apart from one another, each of said quasi-conductive fibers being configured to effect corona discharge such as at their ends or at other discharge points, and having sufficient resistance to substantially avoid incendiary discharge at their ends or along their lengths at a rate that results in incendiary type discharges from said fabric in use in an ungrounded type flexible fabric container in a combustible environment having a minimum ignition energy of 0.25 mT.
4. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein said quasi-conductive fibers are woven into the flexible fabric container.
5. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein said quasi-conductive fibers are positioned preferably about one inch apart from one another.
6. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein at least one of said quasi-conductive fibers includes a conductive sheath and an insulating core; and wherein at least a portion of said insulating core is not covered by said conductive sheath.
7. The fabric for use in an ungrounded type flexible fabric container according to claim 1, wherein said fabric includes a coating of a compound having antistatic properties applied to cover a surface of said walls.
8. The fabric for use in an ungrounded type flexible fabric container according to claim 1, wherein said fabric container is a flexible intermediate bulk container.
9. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein at least one of said quasi-conductive fibers comprises a conductive core and an insulating sheath.
10. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein at least one of said quasi-conductive fibers comprises a con-conductive core and a quasi-conductive sheath.
11. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein at least one of said quasi-conductive fibers comprises a plurality of conductive, quasi-conductive, and non-conductive materials.
12. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein at least one of said quasi-conductive fibers comprises a plurality of conductive and non-conductive materials.
13. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein said woven fabric comprises:
a plurality of warp fibers and a plurality of weft fibers.
a plurality of warp fibers and a plurality of weft fibers.
14. The fabric for use in an ungrounded type flexible fabric container according to claim 13, wherein said plurality of warp fibers is substantially perpendicular to said plurality of weft fibers, and wherein at least a first quasi-conductive fiber is ubstantially parallel with said warp fibers; and at least a second quasi-conductive fiber is substantially parallel with said weft fibers.
15. The fabric for use in an ungrounded type flexible fabric container according to claim 3, wherein said quasi-conductive fibers are continuous fibers.
16. The fabric for use in an ungrounded type flexible fabric container according to claim 11, wherein at least one of said quasi-conductive fibers further comprises at least one corona discharge point at an end of at least one of said conductive and quasi-conductive materials.
17. The fabric for use in an ungrounded type flexible fabric container according to claim 12, wherein at least one of said quasi-conductive fibers further comprises at least one corona discharge point at an end of at least one of said conductive materials.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13911393A | 1993-10-21 | 1993-10-21 | |
| US08/139,113 | 1993-10-21 | ||
| US08/252,660 US5478154A (en) | 1994-06-01 | 1994-06-01 | Quasi-conductive anti-incendiary flexible intermediate bulk container |
| US08/252,660 | 1994-06-01 | ||
| CA002173346A CA2173346C (en) | 1993-10-21 | 1994-10-21 | Anti-incendiary flexible intermediate bulk container system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002173346A Division CA2173346C (en) | 1993-10-21 | 1994-10-21 | Anti-incendiary flexible intermediate bulk container system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2538977A1 true CA2538977A1 (en) | 1995-04-27 |
| CA2538977C CA2538977C (en) | 2010-02-09 |
Family
ID=36676974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2538977A Expired - Lifetime CA2538977C (en) | 1993-10-21 | 1994-10-21 | Anti-incendiary flexible intermediate bulk container system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2538977C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4245519A1 (en) | 2022-03-15 | 2023-09-20 | Taghleef Industries Inc. | Triboelectric mitigator coating |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109132159A (en) * | 2017-06-27 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of antistatic chemical powder packaging bag |
-
1994
- 1994-10-21 CA CA2538977A patent/CA2538977C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4245519A1 (en) | 2022-03-15 | 2023-09-20 | Taghleef Industries Inc. | Triboelectric mitigator coating |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2538977C (en) | 2010-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20141021 |