EP1734163A1 - An elastic weaved belt to sustain the human body - Google Patents
An elastic weaved belt to sustain the human body Download PDFInfo
- Publication number
- EP1734163A1 EP1734163A1 EP06012083A EP06012083A EP1734163A1 EP 1734163 A1 EP1734163 A1 EP 1734163A1 EP 06012083 A EP06012083 A EP 06012083A EP 06012083 A EP06012083 A EP 06012083A EP 1734163 A1 EP1734163 A1 EP 1734163A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- threads
- elastic
- thread
- anelastic
- covered
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D1/00—Woven fabrics designed to make specified articles
- D03D1/0005—Woven fabrics for safety belts
-
- 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
- D03D15/50—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 properties of the yarns or threads
- D03D15/56—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 properties of the yarns or threads elastic
-
- 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
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
-
- 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
- D10B2505/00—Industrial
- D10B2505/12—Vehicles
- D10B2505/122—Safety belts
Definitions
- the present invention relates to woven elastic belts used to support the human body in applications for articles of indoor or outdoor furniture, such as chairs, seats, settees, beds or other similar items, as well as for seats of motor vehicles and similar applications.
- These belts are placed in tension between opposite sides of a frame of the article of furniture or the like and support, as stated, the weight and the thrust of the human body in place of more traditional springs.
- Every belt is obtained from webbing with elastic warp threads in tension and substantially anelastic weft threads.
- Every warp thread is in fact formed from a rubber thread, either natural latex or synthetic rubber, that it is covered with a substantially anelastic thread, for example a polypropylene thread.
- the covering can be carried out by various methodologies, in themselves known, called respectively " chain stitch", “monospiral” or “bispiral”.
- the chain stitch covering forms a plurality of knots, substantially equidistant, that limit the maximum elastic excursion of the complex formed by the elastic thread and the substantially anelastic covering thread.
- the distance between two consecutive knots on the rubber thread, in conditions of maximum traction is usually comprised between some tenths of a millimeter and some millimeters.
- the elastic belts with rubber threads have, exactly due to such rubber threads, an insufficient resistance to heat, ozone and to chemical agents in general. They tend to age and the rubber threads, with use, tend to tear and break, especially as a result of the tightening action exerted on them by the knots or the threads of the covering.
- the object of the present invention is to propose an elastic belt of the type used for the cited applications which, while maintaining at least the same performance as the current elastic belts, avoids the disadvantages cited above.
- This object is achieved, according to the invention, by replacing one or more of the rubber threads - preferably all the rubber threads - each with a thread or bundle of two or more polyurethane threads, especially threads in spandex.
- the covering can be advantageously carried out with a covering having chain stitch knots that are closer to each other than those used in the covering on the rubber threads (up to + 80%) and this without danger of ruining the spandex threads.
- the knots of the covering applied on the spandex are located with a gap thereof, under conditions of maximum traction, comprised between 1 mm and 9 mm.
- the covered spandex threads are then arranged as the warp for the webbing of the belt according to classic methods.
- the warp can also be placed under tension in this case, but it is possible in this way to exercise a tension close to the maximum that can be applied to the covered elastic threads of spandex, unlike what happens in the case of the rubber threads, where the tension must be limited in order not to excessively wear out the rubber.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Woven Fabrics (AREA)
Abstract
The invention relates to a woven elastic belt, destined to support the human body in indoor and outdoor articles of furniture, seats for motor vehicles or the like, of the type comprising a plurality of elastic threads covered with substantially anelastic threads, which together form the warp of the belt, woven with substantially anelastic weft threads. With the object to improve the operating conditions, at least some of the elastic threads are polyurethane threads.
Description
- The present invention relates to woven elastic belts used to support the human body in applications for articles of indoor or outdoor furniture, such as chairs, seats, settees, beds or other similar items, as well as for seats of motor vehicles and similar applications. These belts are placed in tension between opposite sides of a frame of the article of furniture or the like and support, as stated, the weight and the thrust of the human body in place of more traditional springs.
- Every belt is obtained from webbing with elastic warp threads in tension and substantially anelastic weft threads.
- Every warp thread is in fact formed from a rubber thread, either natural latex or synthetic rubber, that it is covered with a substantially anelastic thread, for example a polypropylene thread. The covering can be carried out by various methodologies, in themselves known, called respectively " chain stitch", "monospiral" or "bispiral". In particular, the chain stitch covering forms a plurality of knots, substantially equidistant, that limit the maximum elastic excursion of the complex formed by the elastic thread and the substantially anelastic covering thread. For example, the distance between two consecutive knots on the rubber thread, in conditions of maximum traction, is usually comprised between some tenths of a millimeter and some millimeters.
- These elastic belts have found very many applications in the fields cited, but however it has also been found that they can have some disadvantages, both in relation to particular uses, and in relation to their durability and the retention of their characteristics over time
- In effect, the elastic belts with rubber threads have, exactly due to such rubber threads, an insufficient resistance to heat, ozone and to chemical agents in general. They tend to age and the rubber threads, with use, tend to tear and break, especially as a result of the tightening action exerted on them by the knots or the threads of the covering.
- The object of the present invention is to propose an elastic belt of the type used for the cited applications which, while maintaining at least the same performance as the current elastic belts, avoids the disadvantages cited above.
- This object is achieved, according to the invention, by replacing one or more of the rubber threads - preferably all the rubber threads - each with a thread or bundle of two or more polyurethane threads, especially threads in spandex.
- These threads or bundles of threads in spandex remain unaltered under all conditions in which rubber threads degrade, and the spandex threads are not in danger of breaking or being cut by the knots or the threads of the covering. Considering that the threads of spandex that are commercially available are in general thinner than the rubber threads necessarily employed in the belts cited, it can be suitable to replace every rubber thread with a bundle of two or more threads in spandex, up to an overall value of 1000 to 11000 dtex.
- Moreover, the covering can be advantageously carried out with a covering having chain stitch knots that are closer to each other than those used in the covering on the rubber threads (up to + 80%) and this without danger of ruining the spandex threads. For example, the knots of the covering applied on the spandex are located with a gap thereof, under conditions of maximum traction, comprised between 1 mm and 9 mm.
- The covered spandex threads are then arranged as the warp for the webbing of the belt according to classic methods. The warp can also be placed under tension in this case, but it is possible in this way to exercise a tension close to the maximum that can be applied to the covered elastic threads of spandex, unlike what happens in the case of the rubber threads, where the tension must be limited in order not to excessively wear out the rubber.
- Under these conditions, the spandex works better than the rubber, which shows the maximum wears under tension.
Claims (7)
- A woven elastic belt, destined to support the human body in indoor and outdoor articles of furniture, seats for motor vehicles or the like, of the type comprising a plurality of elastic threads covered by substantially anelastic threads, which forms the warp of the belt woven with substantially anelastic weft threads, characterized in that at least some of the elastic threads are in the form of polyurethane threads.
- An elastic belt according to Claim 1, characterized in that the elastic threads are of spandex.
- An elastic belt according to Claim 1 or 2, characterized in that the elastic threads are each formed by one, two or more polyurethane threads bundled and covered with a single substantially anelastic thread.
- An elastic belt according to Claim 3, characterized in that every thread or group of threads covered together by a single substantially anelastic thread, has a total value of 1000 to 11000 dtex.
- An elastic belt according to one or more of the previous Claims, characterized in that every elastic thread or every group of elastic threads is covered with a substantially anelastic thread applied as a "monospiral" or "bispiral" chain stitch.
- An elastic belt according to Claim 5, in which every elastic thread or every group of elastic threads is covered with a substantially anelastic thread applied as a chain stitch, characterized in that the knots of the covering chain stitch are located at a mutual distance of between 1 mm and 9 mm under conditions of maximum tension.
- An elastic belt according to any of the previous Claims, characterized in that it is woven with the warp threads stretched close of the their maximum allowed tension.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT001133A ITMI20051133A1 (en) | 2005-06-16 | 2005-06-16 | ELASTIC BELT FABRIC FOR THE SUPPORT OF THE HUMAN BODY |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1734163A1 true EP1734163A1 (en) | 2006-12-20 |
Family
ID=36969178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06012083A Withdrawn EP1734163A1 (en) | 2005-06-16 | 2006-06-13 | An elastic weaved belt to sustain the human body |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1734163A1 (en) |
IT (1) | ITMI20051133A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2706898A (en) * | 1951-01-31 | 1955-04-26 | Fairhope Fabrics Inc | Knitted elastic fabric |
DE7833419U1 (en) * | 1978-11-10 | 1979-02-15 | Karl Otto Braun Kg, 6759 Wolfstein | ELASTIC SEALING TAPE |
US4215684A (en) * | 1977-09-16 | 1980-08-05 | Lohmann Gmbh & Co. Kg | Permanent elastic net-shaped bandage, especially for medical purposes |
JPS63203113A (en) * | 1987-02-19 | 1988-08-23 | 井上 勇太郎 | Belt for seat cushion |
US5069957A (en) * | 1989-12-22 | 1991-12-03 | S.A.R.L. "Matiba-Manufactures De Tissus" | Fire resistant elastic strap |
-
2005
- 2005-06-16 IT IT001133A patent/ITMI20051133A1/en unknown
-
2006
- 2006-06-13 EP EP06012083A patent/EP1734163A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2706898A (en) * | 1951-01-31 | 1955-04-26 | Fairhope Fabrics Inc | Knitted elastic fabric |
US4215684A (en) * | 1977-09-16 | 1980-08-05 | Lohmann Gmbh & Co. Kg | Permanent elastic net-shaped bandage, especially for medical purposes |
DE7833419U1 (en) * | 1978-11-10 | 1979-02-15 | Karl Otto Braun Kg, 6759 Wolfstein | ELASTIC SEALING TAPE |
JPS63203113A (en) * | 1987-02-19 | 1988-08-23 | 井上 勇太郎 | Belt for seat cushion |
US5069957A (en) * | 1989-12-22 | 1991-12-03 | S.A.R.L. "Matiba-Manufactures De Tissus" | Fire resistant elastic strap |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 198839, Derwent World Patents Index; AN 1988-275757, XP002399994 * |
Also Published As
Publication number | Publication date |
---|---|
ITMI20051133A1 (en) | 2006-12-17 |
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REG | Reference to a national code |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20070621 |