Heavy Load Tyre
A technology for heavy loads and tires, which is applied to tire parts, tire edges, transportation and packaging, etc., and can solve problems such as tire delamination
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[0073] Based on the specifications in Table 1, manufactured with figure 1 The basic structure of figure 2 , Figure 4 or Figure 5 The size of the bead part is 12.00R20 for heavy duty tires. As a comparative example, manufacture such as Figure 6 Shown is a heavy duty tire having a bead portion provided with only the first reinforcing portion. The durability of the bead portion of each test tire was tested. Common specifications and test methods for each test tire are as follows.
[0074] Install the rim: 20×8.50V
[0075] Tire internal pressure: 850kPa
[0076]
[0077] The above-mentioned test tires were run on a roller testing machine under the following conditions, and the running distance before the bead portion was damaged was measured. As a result, the value of Comparative Example 1 was assumed to be 100, and the larger the value, the better the durability of the bead portion.
[0078] Speed: 20km / h
[0079] Longitudinal load: 73.46KN
[0080] Test results...
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