Hybrid cords with recycled hybrid plies having mixed filaments

Abstract

The present disclosure provides reinforcement cords having cord-plies with mixed recycled and / or virgin polymer filaments. The recycled polymer content in the recycled filaments is minimum 10% and maximum 100%, The reinforcement cords may include polyethylene terephthalate (PET) and / or nylon 6,6 and / or aramid filaments with a linear density less than 10 dtex and thickness of 1-10 ?m. The reinforcement cords can be used as carcass reinforcement or cap ply reinforcement in the pneumatic tire.

Description

9081.216 1 TARIFF RECYCLED HYBRID WITH MIXED FILMS MULTI-LAYERED HYBRID CORDS The current description refers to reinforcement cords for pneumatic tires, and more specifically, reinforcement 5. cords, pneumatic tires in which these cords are included, and mixed recycled materials. and production of reinforcing cords with plies containing raw polymer filaments It is related to methods. Pneumatic tires are widely used on various vehicles and typically come in a range of 10. It contains reinforcing cords to provide strength and stability. This reinforcement Cords are generally made of polyester (PET) and nylon, which offer desirable mechanical properties. and / or are made from synthetic polymers such as aramid. Cords typically to improve performance characteristics such as durability, handling and driving comfort 15, which are different parts of the tire structure, including the carcass and impact ply. is being done. In recent years, tires have been used to reduce environmental impact and promote sustainability. Interest is growing in the use of recycled materials in production. Recycled PET (R-PET) and recycled nylon (R-NY), reinforcement 20 They have emerged as potential alternatives to virgin polymers for cords. However, the use of recycled materials in tire reinforcements This presents various challenges. A major problem is that reinforcement cords are made from recycled materials. The goal is to maintain consistent quality and performance. Recycled polymers are molecular. 9081.216 2 They can vary in terms of weight, crystallinity, and impurity content, and these This variability can affect the mechanical properties of the fibers obtained. This can lead to inconsistent cord performance and potentially endanger tire safety and This can compromise its durability. Another challenge is using recycled materials in reinforcement cords. The goal is to achieve the desired balance of properties. Recycled polymers are environmentally friendly. While it can offer benefits, the mechanical properties exhibited by unprocessed polymers They are generally insufficient to meet all requirements. This is due to the specific tire. This can limit their applicability in components or compromise design. 10 This may require them to provide it. In addition, the processing of recycled polymers into high-quality reinforcing cords, It is more complex and costly compared to the use of raw materials. This is possible. Deterioration during reprocessing and additional purification steps may occur. 15 Issues such as the perceived need affect production efficiency and economic feasibility. It can have an impact. A support cord system that overcomes one or more of these problems It has been understood that it is needed. 20 In the PCT patent application WO2023155990A1, in the state of the art, a) recycled polyethylene terephthalate (PET) and b) containing at least one other material. An elastomeric product containing filaments, specifically a vehicle tire, is being discussed. This patent application concerns the use of recycled nylon and / or PET 25 It explains that each layer of the hybrid cord is recycled. Because it may contain multiple filaments made of PET and / or recycled nylon. It does not mention it. 9081.216 3 At a first angle, a reinforcement cord is provided. Reinforcement cords are used for mixed back Cord containing converted and / or unprocessed PET and / or Nylon 6.6 filaments. It has multiple floors. The linear density of the filaments can be less than 10 dtex. Less than 10 dtex 5 The use of filaments with a linear density provides lightweight yet strong reinforcement. By enabling the production of these cords, the overall tire weight can be reduced and fuel efficiency can be improved. It contributes to increasing its efficiency. Filament thickness can range from 3 to 10 μm. Filaments within this thickness range have 10 Its use allows for efficient cord production while ensuring adequate cord strength and It provides flexibility. The filaments can be arranged symmetrically. The filaments are arranged symmetrically. This arrangement promotes even tension distribution within the cord, resulting in an overall cord 15. It improves performance and durability. Reinforcement cords can be used as carcass reinforcement. This recycled material... The use of reinforcing cords containing additives in the tire carcass provides a critical structural element of the tire. It provides significant environmental benefits in its components. 20 Reinforcement cords can be used as impact layer reinforcement. In the impact layer, these The use of recycled content reinforcement cords makes this important tire Sustainable tire production while maintaining the necessary performance characteristics of its components. It enables applications. 25 Brief Description of the Figures 9081.216 4 Figure 1 - Recycled (R) and / or Unprocessed (V), PET and / or Nylon 6.6 a reinforcing hybrid cord containing (NY) and / or aramid (8) multiple filaments Schematic view of the application. The reference numbers in the figures are as follows: 1. Hybrid Cord 5 2. First floor 3. Second floor 4. R-PET filament 5. V-PET filament 6. R-NY filament 10 7. V-NY filament 8. Aramid filament A reinforcement with cord plies (2,3) having mixed PET and nylon 6,6 multifilaments hybrid cord (1) and includes the following: - Recycled and / or virgin, PET and / or nylon 6.6 and / or 15 a first layer (2) containing aramid multifilaments and - Recycled and / or virgin, PET and / or nylon 6.6 and / or a second layer containing aramid multifilaments (3). The preferred reinforcement hybrid cord (1) containing the first layer (2) and / or second layer (3) In one application, the recycled PET (R-PET) polymer in the filament (4) 20 content is a minimum of 10% and a maximum of 100% by weight and the return in filaments (6) Converted Nylon 6.6 (R-NY) polymer content is a minimum of 10% by weight. The maximum is 100%. In this application, preferably, a reinforcing hybrid cord (1), Maximum 80% R-PET filaments by weight (4) and minimum 20% R-NY filaments (6) includes the first floor (2) and / or the second floor (3). 25 9081.216 In another preferred application, the reinforcement hybrid cord (1) is in the filaments (6) Recycled nylon with a content of a minimum of 10% and a maximum of 100% by weight. First layer containing 6.6 (R-NY) polymer and virgin PET (V-PET) filaments (5) (2) and / or second layer (3) are included. In this application, more preferably, the reinforcement hybrid cord (1), maximum 80% R-NY filaments (6) and minimum 20% 5 by weight. First layer (2) and / or second layer (3) containing raw PET filaments (5) It includes. In another application, the reinforcement hybrid cord (1) uses recycled filaments. PET polymer content is between a minimum of 10% and a maximum of 100% by weight. converted PET (R-PET) filaments (4) and unprocessed PET (V-PET) filaments 10 (5) contains the first layer (2) and / or the second layer (3). More preferably, supplement hybrid cord (1), maximum 80% R-PET filaments (4) and minimum 20% by weight It contains first layer (2) and / or second layer (3) containing R-NY filaments (5). In another application, the reinforcement hybrid cord (1) uses R-NY polymer in the filaments (6). 15 recycled materials whose content is between a minimum of 10% and a maximum of 100% by weight. Nylon (R-NY) filaments (6) and raw Nylon 6.6 (V-NY) filaments (7) It contains the first layer (2) and / or the second layer (3). More preferably, a reinforcing hybrid. cord (1), maximum 80% R-NY filaments (6) and minimum 20% V-NY filaments The first floor (2) and / or the second floor (3) contains (7). In another application, the reinforcement hybrid cord (1) uses recycled 20 filaments. PET polymer content is between a minimum of 10% and a maximum of 100% by weight. first containing converted PET (R-PET) filaments (4) and aramid filaments (8) It includes a second layer (2) and / or a second layer (3). Preferably, a reinforcing hybrid cord (1), maximum 80% R-PET filaments (4) and minimum 20% aramid filaments by weight (8) includes the first floor (2) and / or the second floor (3). 25 9081.216 6 In another application, the reinforcement hybrid cord (1) uses R-NY polymer in the filaments (6). recycled content with a minimum of 10% and a maximum of 100% by weight. First layer (2) and / or second layer containing nylon (R-NY) filaments (6) and aramid (8) (3) includes. Preferably, a reinforcing hybrid cord (1), with a maximum of 80% R- by weight. First layer (2) 5 containing NY filaments (6) and minimum 20% aramid filaments (8). and / or includes a second floor (3). The thickness of the reinforcing hybrid cord (1) consisting of filaments (4,5,6,7,8) is 1-10 μm It is among them. The linear density of the reinforcing hybrid cord (1) consisting of filaments (4,5,6,7,8) is 10 It is less than dtex. 10 Reinforcement hybrid cord (1) consisting of filaments (4,5,6,7,8) must be at least according to ASTM-D 885. It has a tenacity of 5.0 gpd. Reinforcement hybrid cord (1) consisting of filament yarns (4,5,6,7,8) according to ASTM-D 885 4,5 It has an EASL of at least 0.0001% / dtex per kg. Reinforcement hybrid cord containing hybrid cord (1), a cord 200-700 in Z or S direction 15 It has a two-story structure with a curved shape. Reinforcement hybrid cord (1) consisting of filaments in layers (4,5,6,7,8) is symmetrical It is arranged as follows: Reinforcement hybrid cord (1) as carcass reinforcement and / or impact solid reinforcement It is available. 20 It may include a pneumatic tire reinforcement hybrid cord (1). 9081.216 7 All applications of the reinforcing hybrid cord (1) are made of recycled materials. Multifilament using nylon, PET and / or aramid yarns in optimum distribution, obtaining strong and durable and also sustainable hybrid cords (1) It is for.

Claims

9081.216 8 REQUESTS 1. A cord plies (2,3) with mixed PET and nylon 6,6 multifilaments The reinforcement hybrid cord (1) includes the following: - Recycled and / or virgin, PET and / or nylon 6.6 and / or 5 a first layer (2) containing aramid multifilaments and - Recycled and / or virgin, PET and / or nylon 6.6 and / or a second layer containing aramid multifilaments (3).

2. According to claim 1, a reinforcement hybrid cord (1) is where the first layer (2) and / or second layer (3) filament (4) inside recycled PET (R-PET) polymer 10 content is a minimum of 10% and a maximum of 100% by weight and in the filament (6) Recycled Nylon 6.6 (R-NY) polymer content minimum by weight. It is 10% and a maximum of 100%.

3. According to claim 2, the reinforcement is hybrid cord (1), where the first layer (2) and / or second layer (3), maximum 80% R-PET filaments by weight (4) and minimum 15 It contains 20% R-NY filaments (6).

4. According to claim 1, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3), the content in the filaments (6) is a minimum of 10% by weight and Made from 100% recycled Nylon 6.6 (R-NY) polymer. It contains unprocessed PET (V-PET) filaments (5). 20 5. According to claim 1, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3), maximum 80% R-NY filaments by weight (6) and minimum It contains 20% virgin PET (V-PET) filaments (5).

6. According to claim 1, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3), 25% of the recycled PET polymer content in the filaments 9081.216 9 recycled PET with a minimum of 10% and a maximum of 100% by weight. (R-PET) filaments (4) and unprocessed PET (V-PET) filaments (5) It includes.

7. According to claim 6, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3) maximum 80% by weight R-PET filaments (4) and minimum 5 It contains 20% virgin PET filaments (5).

8. According to claim 1, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3), minimum by weight content of R-NY polymer in filaments (6) 10% and a maximum of 100% recycled nylon (R-NY) filaments (6) and raw Nylon 6.6 (V-NY) filaments (7) 10 It includes.

9. According to claim 1, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3) maximum 80% R-NY filaments (6) and minimum 20% V-NY It contains filaments (7).

10. According to claim 1, the reinforcement is a hybrid cord (1), where the first layer (2) and / or 15 second layer (3), recycled PET polymer content in filaments recycled PET with a minimum of 10% and a maximum of 100% by weight. It includes (R-PET) filaments (4) and aramid filaments (8).

11. The reinforcement is a hybrid cord (1) according to claim 10, where the first layer (2) and / or second layer (3) maximum 80% by weight R-PET filaments (4) and minimum 20 It contains 20% aramid filaments (8).

12. According to claim 1, the reinforcement is hybrid cord (1), where the first layer (2) and / or second layer (3), weight of the R-NY polymer content in the filaments (6) recycled nylon (R-) which is a minimum of 10% and a maximum of 100%. It includes NY filaments (6) and aramid filaments (8). 25 13. According to claim 12, the reinforcement is a hybrid cord (1), where the first layer (2) and / or second layer (3) maximum 80% R-NY filaments by weight (6) and minimum It contains 20% aramid filaments (8). 9081.216 14. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, the thickness of the filaments (4, 5, 6, 7, 8) is between 1-10 μm.

15. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, the linear density of the filaments (4, 5, 6, 7, 8) is less than 10 dtex.

16. According to any of the above requirements, a reinforcement hybrid cord (1) is 5 Here, the filament yarn (4, 5, 6, 7, 8) has a minimum thickness of 5.0 gpd according to ASTM-D 885. It has a temperament.

17. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, filament yarn (4, 0.0001, 6, 7, 8) has a minimum density of 4.5 kg according to ASTM-D 885. It has an EASL of 0.0001% / dtex. 10 18. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, the hybrid cord is 2-ply with a cord twist of 200-700 in either the Z or S direction. It has a structure.

19. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, the filaments in the layers (4, 5, 6, 7, 8) are arranged symmetrically. 15 20. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, cord (1) is used as carcass reinforcement.

21. According to any of the above requirements, a reinforcement hybrid cord (1) is, Here, cord (1) is used as impact layer reinforcement.

22. A pneumatic tire containing a reinforced hybrid cord (1) according to claims 1 to 19. 20