Sản phẩm cao su được tạo ra như thế nào: Trộn, tạo hình, lưu hóa và hoàn thiện

Stage 1 — Mixing (compounding) The polymer, fillers, oils and curatives are blended in an internal mixer (banbury) or on a two-roll mill. The batch is discharged below about **120–140 °C** so it does not "scorch" (prematurely cure) before shaping.

Stage 2 — Forming - **Calendering:** rolls compound into sheet or coats fabric. - **Extrusion:** produces continuous profiles and hose. - **Molding / injection:** forms discrete parts in a heated mold.

Stage 3 — Vulcanization (curing) Heat and pressure cross-link the compound, typically at **140–180 °C**. Thin sheet can cure in 5–15 minutes; thick blocks may need an hour or more. Under-cured parts take a permanent set and age badly; over-cured parts lose elongation. Cross-link density is the main lever behind hardness, modulus and compression set.

Stage 4 — Finishing Cooling, trimming, deflashing, splicing and inspection before packing. Cured rubber is a thermoset — it will not melt and reflow, so trimmed scrap cannot be remelted like plastic.

What to check with a supplier Ask about cure method, typical tolerance and inspection (e.g. dimensional checks, hardness verification). [Browse rubber machinery and finished products](/industry/rubber-chemicals) or [post an RFQ](/rfq/post).

Sourcing & Support - Customization supported: size, color, packaging and certification can be customized to drawings; MOQ is subject to the supplier. - Data shown: market figures are from public industry research (2025 global rubber market ≈ USD 382 billion; China consumption >11 million tonnes). Platform live inventory: 251 products / 42 categories (as of 2026-10). - For reference of current stock only: the parameters above are general industry ranges; final specs are subject to actual inventory and the quotation sheet. - For specific details, contact our team: specs, lead time, MOQ, certification files, etc. — please [submit an RFQ](/rfq/post) or contact our online support directly.

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