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US-2020165400-A1 · May 28, 2020 · US
Method for the treatment of cords for the reinforcing layers of pneumatic tires
US12337628B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12337628-B2 |
| Application number | US-202017780661-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 27, 2020 |
| Priority date | Nov 29, 2019 |
| Publication date | Jun 24, 2025 |
| Grant date | Jun 24, 2025 |
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Abstract
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Method for the treatment of single-filament polyethylene terephthalate cords for the reinforcing layers of a pneumatic tyre comprising (a) an adhesive solution coating step, wherein the single filament cord is immersed in an adhesive solution; (b) a drying step, wherein the cord covered in adhesive resin is held within a drying oven at a temperature of between 12° and 180° C.; and (c) a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds. During the thermobonding step, the single filament cord is subjected to a tension of between 8 and 12 mN/dtex.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for treatment of single filament cords for reinforcing layers of a pneumatic tire, said method comprising: an adhesive solution coating step, wherein a single-ply cord comprising a single filament is immersed in an adhesive solution; a drying step, wherein the single-ply cord covered in adhesive resin is held in a drying oven at a temperature of between 12° and 180° C.; and a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds, wherein during said thermobonding step a tensile load of between 8 and 12 mN/dtex is applied to the single filament of the single-ply cord. 2. The method of claim 1 , wherein said thermobonding step is performed at a temperature of between 235 and 250° C. 3. The method of claim 1 , wherein said thermobonding step endures for a period of between 40 and 80 seconds. 4. The method of claim 1 , wherein the single filament cord has a linear density of between 1000 and 2000 dtex. 5. The method of claim 1 , wherein the single filament cord has a twist factor of between 70 and 180. 6. The method of claim 1 , the single filament cord has a twist factor of between 120 and 160. 7. A method for treatment of single filament cords for reinforcing layers of a pneumatic tire, said method comprising: an adhesive solution coating step, wherein a single filament cord is immersed in an adhesive solution; a drying step, wherein the cord covered in adhesive resin is held in a drying oven at a temperature of between 12° and 180° C.; and a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds, wherein during said thermobonding step the single filament cord is subjected to a tension ranging from about 8.9 mN/dtex to about 10.3 mN/dtex.
Assignees
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Classifications
Polyesters · CPC title
- D06M15/70Primary
combined with mechanical treatment · CPC title
with natural or synthetic rubber, or derivatives thereof · CPC title
Twist structures · CPC title
Diameters of the cords; Linear density thereof · CPC title
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Frequently asked questions
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- What does patent US12337628B2 cover?
- Method for the treatment of single-filament polyethylene terephthalate cords for the reinforcing layers of a pneumatic tyre comprising (a) an adhesive solution coating step, wherein the single filament cord is immersed in an adhesive solution; (b) a drying step, wherein the cord covered in adhesive resin is held within a drying oven at a temperature of between 12° and 180° C.; and (c) a thermob…
- Who is the assignee on this patent?
- Bridgestone Europe NV/SA [BE/BE], Bridgestone Europe Nv Sa
- What technology area does this patent fall under?
- Primary CPC classification D06M15/70. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Jun 24 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).