Boao Rubber
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■ The longitudinal tensile elongation at break of the full thickness shall not be less than 10%, and the longitudinal reference force elongation of the full thickness shall not be greater than 4%.
■ The average bonding strength between the fabric layers shall not be less than 4.5 N/mm, or shall not be less than 5 N/mm.
■ The bonding strength between the cover layer and the core layer shall not be less than 3.2 N/mm when the cover layer thickness is 0.8-1.5mm, and not less than 3.5 N/mm when the cover layer thickness is greater than 1.5mm; or shall not be less than 4.5 N/mm when the cover layer thickness is not greater than 1.5mm, and not less than 5 N/mm when the cover layer thickness is greater than 1.5mm.
EP conveyor belts feature excellent heat resistance, heat stability, moisture resistance, insect protection, and dimensional stability. They are ideal for high-speed, heavy-load, and medium-to-long-distance material transportation.
The values (e.g., EP100, EP200) represent the longitudinal tensile strength of a single fabric layer in N/mm. A designation like EP800/4 indicates that the combined longitudinal tensile strength of its 4 fabric layers equals 800 N/mm.
The full thickness longitudinal tensile elongation at break must not be less than 10%, while the longitudinal reference force elongation at full thickness should not exceed 4%.
The average bonding strength between fabric layers must be at least 4.5 N/mm or 5 N/mm. For the cover-to-core bonding, it ranges from 3.2 N/mm up to 5 N/mm depending on the thickness of the cover layer.
They are classified into three grades: Grade H for strong scratch resistance (tensile strength ≥ 24 MPa), Grade D for strong abrasion resistance (tensile strength ≥ 18 MPa), and Grade L for general usage (tensile strength ≥ 15 MPa).
After undergoing the aging process, the rate of change in tensile strength and elongation at break for all grades (H, D, and L) must remain within the range of -25% to +25%.
