CN115489236A - Reinforcing part for full explosion-proof tire and full explosion-proof tire - Google Patents
Reinforcing part for full explosion-proof tire and full explosion-proof tire Download PDFInfo
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- CN115489236A CN115489236A CN202211259559.7A CN202211259559A CN115489236A CN 115489236 A CN115489236 A CN 115489236A CN 202211259559 A CN202211259559 A CN 202211259559A CN 115489236 A CN115489236 A CN 115489236A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/005—Reinforcements made of different materials, e.g. hybrid or composite cords
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Abstract
The invention provides a reinforcing piece for a full explosion-proof tire, belongs to the technical field of full explosion-proof tires, and can solve the problems of premature failure of the full explosion-proof tire and poor product quality caused by heat accumulation due to large deformation of the reinforcing piece of the full explosion-proof tire in the prior art. The reinforcing parts for the full explosion-proof tire are distributed along the circumferential direction of the section of the tire and comprise fiber framework materials and rubber compositions filled in gaps among cords of the fiber framework materials and the upper and lower surfaces of the cords of the fiber framework materials, wherein the fiber framework materials are prepared by blending ultrahigh molecular weight polyethylene fibers and polyhexamethylene adipamide fibers. The invention can be applied to the full run-flat tire, and has the characteristics of improving the bonding performance of the fiber framework material and the rubber composition of the reinforced part of the full run-flat tire, improving the strength of the reinforced part of the full run-flat tire, reducing the deformation quantity of the side wall part, reducing heat accumulation and prolonging the service life of the full run-flat tire.
Description
Technical Field
The invention belongs to the technical field of full explosion-proof tires, and particularly relates to a reinforcing piece for a full explosion-proof tire and a full explosion-proof tire.
Background
The full run flat tire is required to run for 60min at 80km/h under zero air pressure, the sinking amount of the full run flat tire is increased sharply in the process, heat is accumulated at the original supporting body, the circumferential reinforcing part and the like due to high-speed deflection deformation, the bonding strength between a fiber framework material and a rubber composition in the circumferential reinforcing part and between the rubber composition and other parts of the tire is reduced, the delamination quality problem between the fiber framework material and the rubber composition in the circumferential reinforcing part and between the rubber composition and other parts of the tire is caused, and the problem of early failure of the full run flat tire is caused.
At present, in a full explosion-proof tire product, a circumferential reinforcing part is mostly made of polyethylene terephthalate (PET) fibers, and a few high-end full explosion-proof tire products are made of cellulose fibers. However, in practice, the polyethylene terephthalate fiber reinforcement has the following disadvantages: when the full run-flat tire is in zero air pressure, the polyethylene glycol terephthalate fiber reinforcement can bear the self weight of a vehicle from the radial direction and the lateral force caused by the steering of the vehicle, under the action of stress, the polyethylene glycol terephthalate fiber reinforcement can generate larger deformation, and the larger deformation can lead the support body at the side part of the full run-flat tire to be compressed in a transition way. From the microscopic analysis, when the polyethylene terephthalate fiber reinforced part is stressed, because the molecular weight is only 2-3 ten thousand, the molecules can slide and twist, for the larger molecular weight, the sliding resistance is larger when the part is stressed, and the part can be deformed less when the part is stressed by the same force, on the contrary, the smaller the molecular weight is, the part can slide more easily when the part is stressed by the same force, and then the larger deformation quantity is generated.
In practice, the cellulose fiber reinforcement, although having a better dimensional stability than the polyethylene terephthalate fiber reinforcement, is subject to a significant expansion in the radial direction of the fiber crystals after the cellulose fiber reinforcement absorbs moisture in the presence of water, which weakens the lateral bonding forces between the fiber molecules, and is manifested by a decrease in the wet strength of the cellulose fiber reinforcement of about 20%. The characteristic of the cellulose fiber reinforcement that the wet strength is reduced can bring the explosion-proof tire production technology complicated, and the requirement for the production technology process control of the full explosion-proof tire is stricter, otherwise, the cellulose fiber reinforcement can be caused to produce the strength reduction because of moisture absorption, the use performance of the explosion-proof tire with zero air pressure is further influenced, and the product quality stability is poor.
With the development of the full explosion-proof tire, the performance requirements of products cannot be met by the existing full explosion-proof tire reinforcing piece.
Disclosure of Invention
Aiming at the problems of premature failure of the full explosion-proof tire and poor product quality caused by heat accumulation due to large deformation of the full explosion-proof tire reinforcement in the prior art, the invention provides the full explosion-proof tire reinforcement, which has the characteristics of improving the bonding performance of a fiber framework material and a rubber composition of the full explosion-proof tire reinforcement, improving the strength of the full explosion-proof tire reinforcement, reducing the deformation of a tire side part, reducing heat accumulation and prolonging the service life of the full explosion-proof tire.
In order to achieve the purpose, the invention provides a reinforcement for a full explosion-proof tire, which adopts the technical scheme that: the reinforcing parts for the full run-flat tire are distributed along the circumferential direction of the section of the tire and comprise fiber framework materials and rubber compositions filled in gaps among cords of the fiber framework materials and the upper and lower surfaces of the cords of the fiber framework materials, wherein the fiber framework materials are prepared by mixing and spinning ultrahigh molecular weight polyethylene fibers and polyhexamethylene adipamide fibers.
In some embodiments, the fiber skeleton material cord fabric is prepared by the following method: respectively melting, extruding, spinning and twisting the ultra-high molecular weight polyethylene fibers and the polyhexamethylene adipamide fibers to prepare strands; twisting the two strands to prepare a thread; weaving the threads to obtain the cord fabric.
In some of these embodiments, the cords of fibrous skeletal material are arranged in parallel.
In some of these embodiments, the fiber scaffolding material cord-to-cord spacing is between 0.15mm and 0.50mm.
In some of these embodiments, the ultra-high molecular weight polyethylene fibers are co-spun with the polyhexamethylene adipamide fibers at a twist of 250T/m to 500T/m.
In some embodiments, the covering thickness of the rubber composition on the upper surface and the lower surface of the fiber skeleton material is 0.15 mm-0.50 mm.
The invention also provides a full explosion-proof tire which comprises the reinforcing piece for the full explosion-proof tire.
Compared with the prior art, the invention has the advantages and positive effects that:
the reinforcing parts for the full explosion-proof tire are distributed along the circumferential direction of the section of the tire, comprise fiber framework materials and rubber compositions filled in the gaps between the upper surface and the lower surface of the fiber framework and between the cords, improve the durability of the reinforcing parts for the full explosion-proof tire, and avoid the quality problems of early delamination and the like; the covering thickness of the rubber composition on the upper surface and the lower surface of the fiber framework material is 0.15 mm-0.50 mm, so that the problems that the bonding performance of the fiber framework material and the rubber composition is reduced, delamination is generated and the early failure of the full explosion-proof tire is caused due to insufficient covering thickness of the rubber composition are solved, and the problems that the material is wasted and the production cost is increased due to too thick covering thickness of the rubber composition are solved. The fiber framework material of the reinforcement for the fully run-flat tire is prepared by mixing and spinning the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and after the two fibers are twisted by the twist of 250-500T/m, the mechanical property and the bonding property are improved, so that the bonding of the ultra-high molecular weight polyethylene fiber and the rubber composition is facilitated; the distance between the fiber framework material lines in the reinforcing piece for the full run-flat tire is 0.15-0.50 mm, so that the problem of early failure of the full run-flat tire caused by overlarge or undersize gaps between the lines is avoided.
Drawings
FIG. 1 is a schematic view of a fully run flat tire reinforcement provided in an embodiment of the present invention in its position in the fully run flat tire;
FIG. 2 is a schematic cross-sectional view of a reinforcement for a run flat tire provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural view of a lower section of a fully-run-flat tire in an inflated state;
FIG. 4 is a schematic structural view of a cross section of a full run-flat tire in a zero-air-pressure state;
in the attached drawings, 1, a tread, 2, a sidewall, 3, a reinforcement, 31, a fiber framework material, 32, a rubber composition, 4, an inner liner, 5, a reinforcing layer, 6, a supporting rubber, 7, an outer protection layer, 8 and a triangular rubber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a reinforcing part for a full explosion-proof tire, which is shown in attached figures 1 and 2, is distributed along the circumferential direction of a tire section, is arranged between a tire side 2 and a supporting rubber 6, and comprises a fiber framework material 31 and a rubber composition 32 filled in gaps among cords of the fiber framework material 31 and the upper surface and the lower surface of the fiber framework material. The fiber framework material 31 bears the forces brought by tire internal pressure, vehicle dead weight, various driving operations and the like, and plays a decisive role in the exertion of the tire functions for the main stress bearing body of the explosion-proof tire. Referring to fig. 3 and 4, when the fully-explosion-proof tire is changed from an inflated state to a zero-air-pressure state, the subsidence of the fully-explosion-proof tire is increased, a tire side part generates huge flexural deformation in the state, and meanwhile, the fully-explosion-proof tire needs to run at high speed, and in order to resist and reduce the deformation, a fiber framework material with high strength and high strength retention rate needs to be selected. The fiber skeleton material 31 is prepared by blending ultrahigh molecular weight polyethylene fiber (UHMWPE) and polyhexamethylene adipamide fiber (N66), the water absorption is weak, compared with cellulose fiber, the difference between the wet strength and the dry strength of the fiber skeleton material 31 is small, the process applicability is stronger, and the product quality is more stable; compared with the polyethylene terephthalate fiber, the fiber cord with the same specification of 1000D/2 structure has the breaking strength of 450N of the ultra-high molecular weight polyethylene fiber and only 140N of the polyethylene terephthalate fiber; compared with aramid fiber, the strength of the fiber framework material 31 is improved by about 40%, the shape of the full run flat tire during zero-pressure running can be better maintained, and the safety of the product is ensured. Wherein, the relative molecular mass of the ultra-high molecular weight polyethylene fiber is 100-500 ten thousand, and the ultra-high molecular weight polyethylene fiber has ultra-long molecular chains and ultra-high strength. Because the molecular chain structure of the ultra-high molecular weight polyethylene fiber is single, and the surface adhesion is poor, the polyhexamethylene adipamide fiber is added, and the two fibers are twisted by a specific twist, so that the mechanical property and the adhesion property are improved, and the adhesion of the ultra-high molecular weight polyethylene fiber and the rubber composition is facilitated. Preferably, the twist of the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber is 250-500T/m, and the preferred twist design ensures the high strength of the framework material, the bonding performance of the framework material and the rubber composition and provides a better supporting effect for the full explosion-proof tire. When the twist is too small, the bonding surface between the polyhexamethylene adipamide fiber and the rubber composition is smaller, so that the effect of insufficient bonding property of the polyhexamethylene adipamide fiber reinforced ultra-high molecular weight polyethylene fiber is not exerted, and the quality problem of separation is easy to occur in the actual application process of a reinforcement, so that the early failure of a product is caused; when the twist is too large, the strength of the ultra-high molecular weight polyethylene fiber is reduced due to the transverse shearing effect, and in the actual application process of the reinforcing part, when the full explosion-proof tire runs at zero air pressure, the sinking amount of the tire is increased, the heat generation is high, and the early failure of the product is caused.
The distance between the cord lines of the fiber framework material 31 in the reinforcing piece for the full explosion-proof tire is 0.15 mm-0.50 mm. If the gap between the wires is too small, friction between the fibers may occur, which may cause early breakage of the molecular chains, and the breakage may cause a decrease in the strength of the fibrous skeleton material 31, resulting in a decrease in the overall support of the tire, leading to early damage failure of the tire. If the gap between the lines is too large, the strength of the reinforcing part with the unit width is reduced, so that the integral supporting performance of the reinforcing part is reduced, when the full explosion-proof tire runs at zero air pressure, the sinking amount is increased, the tire rotates under high deformation and high rotating speed, heat accumulation is caused, and finally the product fails.
The gaps between the fiber framework material 31 cords and the upper and lower surfaces of the reinforcement for the full run-flat tire are covered with the rubber composition, the covering thickness is 0.15 mm-0.50 mm, the durability of the reinforcement for the full run-flat tire is improved, and the quality problems of early delamination and the like are avoided. If the covering thickness of the rubber compositions on the upper surface and the lower surface of the fiber framework material 31 is insufficient, the heat generation at the reverse wrapping position of the reinforcing piece is too high because the rubber compositions are too thin, and the high temperature can reduce the adhesive property between the fiber framework material 31 and the rubber compositions 32, so that the delamination is caused, and the problem of early failure of the full explosion-proof tire is caused; the rubber compositions on the upper surface and the lower surface of the fiber framework material 31 in the reinforcing part are covered by too much thickness, so that material waste is caused, the production cost of the tire is increased, and the product competitiveness is reduced.
The fiber framework material 31 of the reinforcement for the full run-flat tire is prepared by blending the ultrahigh molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber by setting the twist and the radial linear density, the fiber framework material 31 and the rubber composition 32 covering the upper surface and the lower surface jointly form the reinforcement for the full run-flat tire, better support performance is provided for the full run-flat tire, and the deformation quantity of the tire side part is reduced when the full run-flat tire is changed from an inflation state to a zero air pressure state, so that smaller deflection heat is brought, the service life of the tire is prolonged, the running safety of a vehicle is increased, and the full run-flat tire is provided with longer running mileage.
The preparation process of the fiber framework material cord fabric of the reinforcement for the full explosion-proof tire comprises the following steps of:
melting, extruding, spinning and twisting the ultra-high molecular weight polyethylene fiber to prepare a strand;
melting, extruding, spinning and twisting the polyhexamethylene adipamide fiber to prepare strands;
twisting the ultra-high molecular weight polyethylene fiber folded yarn and the polyhexamethylene adipamide fiber folded yarn to form a yarn;
weaving the threads to obtain the cord fabric.
The blended fiber framework cord is arranged in parallel, and weft yarns are transversely thinner to play a role in fixing. In the traditional reticular cross arrangement mode, the longitudinal direction of the cord thread and the stress direction form a certain included angle, and when the cord thread is stressed, the size of the cord fabric reinforcing piece can be greatly changed, so that the shape of the tire can be greatly changed, and finally the early failure of the tire can be caused. The invention adopts a non-net-shaped cross form, when the fiber framework material is stressed in the circumferential direction, the stress direction is consistent with the longitudinal direction of the wire, stronger tension can be provided, the deformation amount is smaller, the shape of the tire can be better maintained, large deformation does not occur, and the effect of protecting the tire is achieved.
In order to more clearly and specifically describe the reinforcing member for a full run flat tire provided in the embodiment of the present invention, the following description will be given with reference to specific embodiments.
Example 1
In the embodiment, the fiber skeleton material of the reinforcing member for the full run flat tire is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber.
Example 2
In the embodiment, the fiber skeleton material of the reinforcing part for the full run-flat tire is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the twist is 260T/m.
Example 3
In the embodiment, the fiber skeleton material of the reinforcing part for the full run-flat tire is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the twist is 480T/m.
Example 4
In the embodiment, the fiber skeleton material of the reinforcing part for the full run flat tire is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the twist is 200T/m.
Example 5
In the embodiment, the fiber skeleton material of the reinforcing part for the full run flat tire is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the space between the cord line and the line of the fiber skeleton material is 0.20mm.
Example 6
In the embodiment, the fiber skeleton material of the reinforcing part for the full run flat tire is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the space between the cord line and the line of the fiber skeleton material is 0.40mm.
Example 7
In this embodiment, the fiber skeleton material of the reinforcement for the fully run flat tire is prepared by blending ultra-high molecular weight polyethylene fibers and polyhexamethylene adipamide fibers, and the thickness of the rubber composition covering the upper and lower surfaces of the fiber skeleton material is 0.20mm.
Example 8
In this embodiment, the fiber skeleton material of the reinforcement for the fully run flat tire is prepared by blending ultra-high molecular weight polyethylene fibers and polyhexamethylene adipamide fibers, and the thickness of the rubber composition covering the upper and lower surfaces of the fiber skeleton material is 0.40mm.
Comparative example 1
The fiber framework material of the reinforcing part for the full run-flat tire in the comparative example is aramid fiber.
Comparative example 2
The fiber framework material of the reinforcement for the full run flat tire in the comparative example is ultra-high molecular weight polyethylene fiber.
Comparative example 3
The fiber framework material of the reinforcing part for the full run-flat tire in the comparative example is prepared by blending ultra-high molecular weight polyethylene fiber and polyhexamethylene adipamide fiber, and the twist is 550T/m.
Comparative example 4
The fiber framework material of the reinforcing part for the full run-flat tire in the comparative example is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the space between the cord line and the line of the fiber framework material is 0.10mm.
Comparative example 5
The fiber framework material of the reinforcing part for the full run-flat tire in the comparative example is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, and the space between the cord line and the line of the fiber framework material is 0.60mm.
Comparative example 6
The fiber framework material of the reinforcing part for the full run-flat tire in the comparative example is prepared by blending ultra-high molecular weight polyethylene fiber and polyhexamethylene adipamide fiber, and the thickness of the rubber composition covering the upper surface and the lower surface of the fiber framework material is 0.12mm.
Comparative example 7
The fiber framework material of the reinforcing part for the full run flat tire in the comparative example is prepared by blending ultra-high molecular weight polyethylene fiber and polyhexamethylene adipamide fiber, and the thickness of the rubber composition covering the upper surface and the lower surface of the fiber framework material is 0.65mm.
Performance test
The reinforcing members for a run flat tire of examples 1 to 8 and comparative examples 1 to 7 were applied to a run flat tire, and a zero air pressure endurance test was performed, and the test results are shown in table 1. The zero-air-pressure endurance test specifically operates as follows: at zero air pressure, standard load, run at 60km/h and record the time (min) at which the tire finally fails. The longer the time the tire finally fails, the better the performance of the reinforcement for a fully run-flat tire, and vice versa, the worse.
TABLE 1 REINFORCEMENT PERFORMANCE TESTS FOR FULL FLAME-PROOF TIRE OF EXAMPLES 1-8 AND COMPARATIVE EXAMPLES 1-7
From the above, the fiber framework material of the reinforcement for the full run-flat tire in the embodiment 1 is prepared by blending the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber, the aramid fiber is adopted in the comparative example 1, the ultra-high molecular weight polyethylene fiber is adopted in the comparative example 2, the reinforcement for the full run-flat tire obtained in the embodiment 1 is applied to the full run-flat tire, and the time of the zero-air-pressure endurance test is obviously longer than that of the comparative examples 1 and 2; the twist of the blending of the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber in the example 2 is 260T/m, the twist of the blending of the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber in the comparative example 3 is 550T/m, the reinforcing piece for the fully explosion-proof tire obtained in the example 2 is applied to the fully explosion-proof tire, and the time of a zero-air-pressure endurance test is obviously longer than that of the comparative example 3; the line-to-line distance between the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber in the example 5 is 0.20mm, the line-to-line distance between the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber in the comparative example 4 is 0.10mm, the line-to-line distance between the ultra-high molecular weight polyethylene fiber and the polyhexamethylene adipamide fiber in the comparative example 5 is 0.60mm, the reinforcement for the full run flat tire obtained in the example 5 is applied to the full run flat tire, and the time of the zero air pressure endurance test is obviously longer than that of the comparative examples 4 and 5; the thicknesses of the upper and lower covering rubber compositions of the fiber framework material in example 7 were 0.20mm, the thicknesses of the upper and lower covering rubber compositions of the fiber framework material in comparative example 6 were 0.12mm, the thicknesses of the upper and lower covering rubber compositions of the fiber framework material in comparative example 7 were 0.65mm, and the reinforcing member for a run flat tire obtained in example 7 was applied to a run flat tire, and the time for the zero air pressure endurance test was significantly longer than those of comparative examples 6 and 7.
Claims (7)
1. The reinforcing piece for the full run-flat tire is characterized by being distributed along the circumferential direction of the section of the tire and comprising a fiber framework material and a rubber composition filled in gaps among cords of the fiber framework material and the upper surface and the lower surface of the cords of the fiber framework material, wherein the fiber framework material is prepared by mixing and spinning ultrahigh molecular weight polyethylene fibers and polyhexamethylene adipamide fibers.
2. The reinforcement for the full run-flat tire according to claim 1, wherein the fiber framework material cord fabric is prepared by the following method: respectively melting, extruding, spinning and twisting the ultra-high molecular weight polyethylene fibers and the polyhexamethylene adipamide fibers to prepare strands; twisting the two strands to prepare a thread; weaving the threads to obtain the cord fabric.
3. The reinforcement for a full run flat tire according to claim 1, wherein said cords of the fiber skeleton material are arranged in parallel.
4. The reinforcement for a full run flat tire according to claim 2, wherein the pitch between the cords of the fiber framework material is 0.15mm to 0.50mm.
5. The reinforcement for a full run flat tire as claimed in claim 1, wherein the twist of said ultra-high molecular weight polyethylene fiber and said polyhexamethylene adipamide fiber, which are mixed and woven, is 250 to 500T/m.
6. The reinforcement for a full run flat tire according to claim 1, wherein the rubber composition covers the upper and lower surfaces of the fiber skeleton material to a thickness of 0.15mm to 0.50mm.
7. A fully run-flat tire comprising the reinforcement for a fully run-flat tire according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211259559.7A CN115489236A (en) | 2022-10-14 | 2022-10-14 | Reinforcing part for full explosion-proof tire and full explosion-proof tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211259559.7A CN115489236A (en) | 2022-10-14 | 2022-10-14 | Reinforcing part for full explosion-proof tire and full explosion-proof tire |
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| CN115489236A true CN115489236A (en) | 2022-12-20 |
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| CN202211259559.7A Pending CN115489236A (en) | 2022-10-14 | 2022-10-14 | Reinforcing part for full explosion-proof tire and full explosion-proof tire |
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| CN102639338A (en) * | 2009-12-03 | 2012-08-15 | 米其林集团总公司 | Tire comprising a carcass reinforcement consisting of cables and capillary tubes |
| CN204547242U (en) * | 2015-02-11 | 2015-08-12 | 芜湖华烨工业用布有限公司 | Heat-resisting impregnation synthetic fibers canvas |
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| CN110431267A (en) * | 2017-03-31 | 2019-11-08 | 旭化成株式会社 | Folded yarn cord comprising organic fiber |
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2022
- 2022-10-14 CN CN202211259559.7A patent/CN115489236A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1489199A (en) * | 1922-05-02 | 1924-04-01 | Dreaper William Porter | Spinning and twisting of strands of artificial silk and other yarns or threads |
| CN101050579A (en) * | 2007-04-26 | 2007-10-10 | 杭州中纺锦纶有限公司 | Process for producing nylon 6 cycle tire rubber impregnation cord fabric |
| CN101177823A (en) * | 2007-12-17 | 2008-05-14 | 陈成泗 | Production technique of fibre for high-strength low-extention polypropylene rope |
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| CN110431267A (en) * | 2017-03-31 | 2019-11-08 | 旭化成株式会社 | Folded yarn cord comprising organic fiber |
| CN110952333A (en) * | 2019-10-21 | 2020-04-03 | 芜湖华烨新材料有限公司 | Production process of ultrahigh molecular weight polyethylene fiber rubber framework material |
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