CA1249203A - Light fencing material - Google Patents
Light fencing materialInfo
- Publication number
- CA1249203A CA1249203A CA000464745A CA464745A CA1249203A CA 1249203 A CA1249203 A CA 1249203A CA 000464745 A CA000464745 A CA 000464745A CA 464745 A CA464745 A CA 464745A CA 1249203 A CA1249203 A CA 1249203A
- Authority
- CA
- Canada
- Prior art keywords
- tapes
- bands
- warp
- fabric
- weft
- 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
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D3/00—Woven fabrics characterised by their shape
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
- D03D15/46—Flat yarns, e.g. tapes or films
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D19/00—Gauze or leno-woven fabrics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
Abstract
ABSTRACT OF THE DISCLOSURE A fencing material is disclosed, comprising a woven fabric of oriented polyethylene or polypropylene tapes, said fabric having a band of warp tapes at least about 2.5 cm wide at each selvedge, and at least one band of warp tapes at least 2 cm wide between the selvedge bands such that the distance between adjacent bands of warp tapes is between about 5 cm and 60 cm. The warp tapes are held in position by a plurality of bands of weft tapes woven in leno weave form, each band of weft tapes being at least 1 cm wide and spaced apart from other bands of weft tapes such that the ratio of the area of the fabric covered by the bands of warp and weft tapes to the total area of the fabric is between about 20 and 50%. The fencing material is particularly useful to minimize drifting of sand or snow.
Description
~ s~3 LIG~IT FENCING MATERIAL
The present invention relates to a light fencing material made from woven polyolefin fabric, of particular use in minimizing the effects of drifting snow, sand or soil~
It is known to use fencing as a means to minimize the effects of drifting from blown snow, sand or soil. A
typical fence used heretofore eomprises a plurality of spaced-apart vertical wooden slats, eaeh slat being adjoined to ad~acent slats by two or more strands o twisted wire. Typically such fencing is held in an upright position by attaching the feneing to Eenee posts, usually of the steel T-bar type, a-t intervals of about 4O5 meters. Another type of feneing is made from integrally~extruded plastic net similar to that disclosed in U.SO Patent 4 242 295 which issued 1980 December 30 to T. Urquhart. A disadvantage of using this type of plastie feneing is that the supporting posts need to be placed about 3 metres apart.
Canadian Patent 991 925 which issued 1976 June 29 to Fash et al., discloses a fencing product, made from fibrous strands of synthetic plastie material, woven in a pattern having areas of relatively tight weave and other areas that are relatively open, in whieh the fabric is coated with an elastomeric weather-resistant composi-tion.
The elastomeric material is said to bond the fibres to each other, as well as providing abrasion resistanee and low temperature stability, among other things.
A fencing product, which is light weight ancl which does not require an elastomeric coating, has now been found.
Accordingly, the present invention provides a fencing material comprising a woven fabric of oriented poly-ethylene or polypropylene tapes, said fabric having a band of warp tapes at least about 2.5 centimetres wide at each selvedge of the fabric, and at least one band oE warp tapes at least 2 cen-timetres wide between the selvedge bands such that the distance between adjacen-t bands of warp tapes is between about 5 centimetres and 60 centimetres, said war tapes being held in position by a plurality of bands oE wef-t tapes woven in leno weave form, each band of weft tapes being at least l cm wide and spaced apart from other bands of weft -tapes such that the ratio of the area oE the fabric covered by the bands of warp and wef-t tapes to the total area of the fabric is between about 0.20 and 0.50.
In one embodiment oE the invention, the warp tapes have a width of between about l.O and about 1.5 millimetres and have a linear density between about 400 and about 600 dtex.
In another embodiment, the weft tapes are in bands comprising a plurality of weft tapes, said bands being between about 5 and 15 centimetres in width and adjacent bands of weft tapes being spaced apart from between about 5 and 15 centimetres.
In yet another embodiment, the weft tapes have a width of between about 2.5 and about 3.5 millimetres and have a linear density between about 900 and about llOO dtex.
In a preferred embodimen-t the ratio of the area oE
the fabric covered by the bands of warp and wef-t tapes -to the total area of the fabric is between about 0.25 and 0.40.
In yet another embodiment the bands of warp -tapes are spaced apart about 8 to 12 centimetres.
The invention may be further understood by reference to the drawing which shows one embodiment of the present invention.
The fencing material of the present invention may comprise two selvedge bands, l and 2, of oriented poly-ethylene or polypropylene warp tapes, having spaced -there-between at least one band, 3, of oriented polyethylene or polypropylene warp tapes. Typically these in-termedia-te bands are spaced apart about 30-45 centimetres. The warp a.9~ 3 bands are held in position by a plurality of we~t bands e.g.
4a, 4b, 4c, of oriented polyethylene or polypropylene we~-t tapes. ~t the crossings between -the warp and weft bands, the warp tapes are held securely to the wef-t tapes by means o~ a leno weave. Leno weavinq is accomplished by methods known in -the art.
The fencing material is preferably made from oriented polyethylene tapes. The polyethylene may be a homopolymer of ethylene or a copolymer oE ethylene with a C4 to Clo ~-olefin. A polyethylene having a density in the range of 0.940 to 0.970 g/cm3 is preEerred. The densi-ty of the polyethylene is measured, prior to being extruded into tapes, by ASTM procedure D1505. The material preferably contains an inhibitor against ultraviolet light degradation.
The tapes are oriented to provide the necessary strength to the fabric. The oriented tapes may be made by known methods. For example the polyethylene or polypropylene may be extruded into flat Eilm form, slit into tapes and then oriented. The tapes may also be made, for example, from co-oriented laminated film wherein two similar films are brought together and co-oriented laminated in a narrow gap orientation process. Slitting of the film may be accom-plished by known methods e.g. using a method and apparatus disclosed by M.J. Wolstencro~t in U.S. Patent 4 137 614, which issued 1979 February 6.
The ~abric may be woven using, for example, a projectile weaving machine wi-th dobby and leno weave attachmen-ts.
Fabrics of -the present invention are particularly suitable Eor Eencing material, espec:ially for placement to minimize driEting oE dry snow, sand or soil. In use such fabric is attached to vertical support posts e.g. steel T-bar pos-ts, placed at in-tervals. Preferably the posts are spaced a-t intervals of about 4.5 metres. Although ~?J~ aJ~
securement of the fabric to the posts may be made through use of wire ties a preferred method of securement is to use a clip comprising a piece of plastic tube having a longitu-dinal slit therein. The slit is preferably splayed at one end to aid in sliding the clip over the support post. The clip may be slid over the support post in such a manner to trap the fabric between the support post and the inside of the tubular clip. The sliding action tends to keep the feneing material taut in the weft direction.
The following example serves to illustrate -the present invention:
EXAMPLE I
A fabric was prepared, having two warp selvedge bands about 50 millimetres wide and -two intermediate bands, each about 25 millimetres wide and situated about 34 centi-metres -from the edge bands. Warp bands, each 50 millimetres wide and spaced 50 millimetres apart, were woven to the warp bands. The warp bands comprised polyethylene tapes having a linear density oE 1050 dtex. There were 49 ends per 10 centimetres of warp tapes in each band. 'Fhe weft tapes had a linear density of 1500 dtex. There were 47 ends per 10 centimetre of weft tapes in each band. The selvedges were 50.8 mm wide, each warp band was 25.4 r~m wide and each weft band was 50.8 mm wide r Weft band spacings were 50.8 m,n and warp band spacings were 35.6 cm.
The fabric was woven together using a leno weave.
Several metres of this fabric were taken and secured to steel T-bar posts placed at ~.5 metre intervals. The fencing material was attached to the T-bar posts by means of a "continuous clip" comprising a piece of plastic tubing with a longitudinal slit therein. The sli-t is preEerably splayed a-t one end to aid in sliding the clip over -the T-bar post and to trap the Eabric. The fencing material, erected in Kingston, Ontario, Canada survived 12 weeks during the months February -to May, experiencing temperatures in the range of -20 to +15C and a variety of weather conditions e.g. snow, freezing rain, and gusting high winds. After this test, the material, was removed and observed to be substantially in its original form i.e. -there were no rips in the material and the leno weave had not become unravelled.
Advantages oE the present fencing material over conventional types are that it is light e.g. about 1.1 kg for 30 metres, is no-t bullcy and is easily stored.
The present invention relates to a light fencing material made from woven polyolefin fabric, of particular use in minimizing the effects of drifting snow, sand or soil~
It is known to use fencing as a means to minimize the effects of drifting from blown snow, sand or soil. A
typical fence used heretofore eomprises a plurality of spaced-apart vertical wooden slats, eaeh slat being adjoined to ad~acent slats by two or more strands o twisted wire. Typically such fencing is held in an upright position by attaching the feneing to Eenee posts, usually of the steel T-bar type, a-t intervals of about 4O5 meters. Another type of feneing is made from integrally~extruded plastic net similar to that disclosed in U.SO Patent 4 242 295 which issued 1980 December 30 to T. Urquhart. A disadvantage of using this type of plastie feneing is that the supporting posts need to be placed about 3 metres apart.
Canadian Patent 991 925 which issued 1976 June 29 to Fash et al., discloses a fencing product, made from fibrous strands of synthetic plastie material, woven in a pattern having areas of relatively tight weave and other areas that are relatively open, in whieh the fabric is coated with an elastomeric weather-resistant composi-tion.
The elastomeric material is said to bond the fibres to each other, as well as providing abrasion resistanee and low temperature stability, among other things.
A fencing product, which is light weight ancl which does not require an elastomeric coating, has now been found.
Accordingly, the present invention provides a fencing material comprising a woven fabric of oriented poly-ethylene or polypropylene tapes, said fabric having a band of warp tapes at least about 2.5 centimetres wide at each selvedge of the fabric, and at least one band oE warp tapes at least 2 cen-timetres wide between the selvedge bands such that the distance between adjacen-t bands of warp tapes is between about 5 centimetres and 60 centimetres, said war tapes being held in position by a plurality of bands oE wef-t tapes woven in leno weave form, each band of weft tapes being at least l cm wide and spaced apart from other bands of weft -tapes such that the ratio of the area oE the fabric covered by the bands of warp and wef-t tapes to the total area of the fabric is between about 0.20 and 0.50.
In one embodiment oE the invention, the warp tapes have a width of between about l.O and about 1.5 millimetres and have a linear density between about 400 and about 600 dtex.
In another embodiment, the weft tapes are in bands comprising a plurality of weft tapes, said bands being between about 5 and 15 centimetres in width and adjacent bands of weft tapes being spaced apart from between about 5 and 15 centimetres.
In yet another embodiment, the weft tapes have a width of between about 2.5 and about 3.5 millimetres and have a linear density between about 900 and about llOO dtex.
In a preferred embodimen-t the ratio of the area oE
the fabric covered by the bands of warp and wef-t tapes -to the total area of the fabric is between about 0.25 and 0.40.
In yet another embodiment the bands of warp -tapes are spaced apart about 8 to 12 centimetres.
The invention may be further understood by reference to the drawing which shows one embodiment of the present invention.
The fencing material of the present invention may comprise two selvedge bands, l and 2, of oriented poly-ethylene or polypropylene warp tapes, having spaced -there-between at least one band, 3, of oriented polyethylene or polypropylene warp tapes. Typically these in-termedia-te bands are spaced apart about 30-45 centimetres. The warp a.9~ 3 bands are held in position by a plurality of we~t bands e.g.
4a, 4b, 4c, of oriented polyethylene or polypropylene we~-t tapes. ~t the crossings between -the warp and weft bands, the warp tapes are held securely to the wef-t tapes by means o~ a leno weave. Leno weavinq is accomplished by methods known in -the art.
The fencing material is preferably made from oriented polyethylene tapes. The polyethylene may be a homopolymer of ethylene or a copolymer oE ethylene with a C4 to Clo ~-olefin. A polyethylene having a density in the range of 0.940 to 0.970 g/cm3 is preEerred. The densi-ty of the polyethylene is measured, prior to being extruded into tapes, by ASTM procedure D1505. The material preferably contains an inhibitor against ultraviolet light degradation.
The tapes are oriented to provide the necessary strength to the fabric. The oriented tapes may be made by known methods. For example the polyethylene or polypropylene may be extruded into flat Eilm form, slit into tapes and then oriented. The tapes may also be made, for example, from co-oriented laminated film wherein two similar films are brought together and co-oriented laminated in a narrow gap orientation process. Slitting of the film may be accom-plished by known methods e.g. using a method and apparatus disclosed by M.J. Wolstencro~t in U.S. Patent 4 137 614, which issued 1979 February 6.
The ~abric may be woven using, for example, a projectile weaving machine wi-th dobby and leno weave attachmen-ts.
Fabrics of -the present invention are particularly suitable Eor Eencing material, espec:ially for placement to minimize driEting oE dry snow, sand or soil. In use such fabric is attached to vertical support posts e.g. steel T-bar pos-ts, placed at in-tervals. Preferably the posts are spaced a-t intervals of about 4.5 metres. Although ~?J~ aJ~
securement of the fabric to the posts may be made through use of wire ties a preferred method of securement is to use a clip comprising a piece of plastic tube having a longitu-dinal slit therein. The slit is preferably splayed at one end to aid in sliding the clip over the support post. The clip may be slid over the support post in such a manner to trap the fabric between the support post and the inside of the tubular clip. The sliding action tends to keep the feneing material taut in the weft direction.
The following example serves to illustrate -the present invention:
EXAMPLE I
A fabric was prepared, having two warp selvedge bands about 50 millimetres wide and -two intermediate bands, each about 25 millimetres wide and situated about 34 centi-metres -from the edge bands. Warp bands, each 50 millimetres wide and spaced 50 millimetres apart, were woven to the warp bands. The warp bands comprised polyethylene tapes having a linear density oE 1050 dtex. There were 49 ends per 10 centimetres of warp tapes in each band. 'Fhe weft tapes had a linear density of 1500 dtex. There were 47 ends per 10 centimetre of weft tapes in each band. The selvedges were 50.8 mm wide, each warp band was 25.4 r~m wide and each weft band was 50.8 mm wide r Weft band spacings were 50.8 m,n and warp band spacings were 35.6 cm.
The fabric was woven together using a leno weave.
Several metres of this fabric were taken and secured to steel T-bar posts placed at ~.5 metre intervals. The fencing material was attached to the T-bar posts by means of a "continuous clip" comprising a piece of plastic tubing with a longitudinal slit therein. The sli-t is preEerably splayed a-t one end to aid in sliding the clip over -the T-bar post and to trap the Eabric. The fencing material, erected in Kingston, Ontario, Canada survived 12 weeks during the months February -to May, experiencing temperatures in the range of -20 to +15C and a variety of weather conditions e.g. snow, freezing rain, and gusting high winds. After this test, the material, was removed and observed to be substantially in its original form i.e. -there were no rips in the material and the leno weave had not become unravelled.
Advantages oE the present fencing material over conventional types are that it is light e.g. about 1.1 kg for 30 metres, is no-t bullcy and is easily stored.
Claims (5)
1. A fencing material comprising a woven fabric of oriented polyethylene or polypropylene tapes, said fabric having a band of warp tapes at least about 2.5 centimetres wide at each selvedge of the fabric, and at least one band of warp tapes at least 2 centimetres wide between the edge bands such that the distance between adjacent bands of warp tapes is between about 5 centimetres and 60 centimetres, said warp tapes being held in position by a plurality of bands of weft tapes woven in leno weave form, each band of weft tapes being at least 1 cm wide and spaced apart from other bands of weft tapes such that the ratio of the area of the fabric covered by the bands of warp and weft tapes to the total area of the fabric is between about 0.20 and 0.50.
2. A fencing material of Claim 1 wherein the warp tapes have a width of between about 1.0 and about 1.5 mm and have a linear density of between about 400 and about 600 dtex.
3. A fencing material of Claim 1 or 2 wherein the weft tapes are in bands comprising a plurality of weft tapes, said bands being between about 5 and 15 centimetres in width and adjacent bands of weft tapes being spaced between about 5 and 15 centimetres.
4. A fencing material of Claim 1 wherein the weft tapes have a width of between about 2.5 and about 3.5 mm and have a linear density between about 900 and about 1100 dtex.
5. A fencing material of Claim 1 wherein the ratio of the area of the fabric covered by the bands of warp and weft tapes to the total area of the fabric is between about 0.25 and 0.40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000464745A CA1249203A (en) | 1984-10-04 | 1984-10-04 | Light fencing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000464745A CA1249203A (en) | 1984-10-04 | 1984-10-04 | Light fencing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1249203A true CA1249203A (en) | 1989-01-24 |
Family
ID=4128845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000464745A Expired CA1249203A (en) | 1984-10-04 | 1984-10-04 | Light fencing material |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1249203A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419408A (en) * | 2017-09-15 | 2017-12-01 | 成都海蓉特种纺织品有限公司 | A kind of lace stitch and its method for weaving |
-
1984
- 1984-10-04 CA CA000464745A patent/CA1249203A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419408A (en) * | 2017-09-15 | 2017-12-01 | 成都海蓉特种纺织品有限公司 | A kind of lace stitch and its method for weaving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20060124 |