SORONA BCF yarn is widely used for high‑end commercial and household carpets. Color consistency and color fastness directly determine visual quality of finished carpets. Many carpet manufacturers adopt color‑matching experience from polypropylene or nylon BCF yarn directly, ignoring melting characteristics of SORONA substrate, which results in uneven coloring, batch‑to‑batch color difference and thermal discoloration.
Melting‑temperature range of SORONA polymer differs greatly from ordinary polyolefin and polyamide. When selecting color masterbatch, heat resistance of carrier resin shall match substrate performance. Insufficient heat‑resistant carrier decomposes under high‑temperature BCF spinning and bulking conditions, producing dark spots on yarn surface and low‑molecular precipitates contaminating machine parts and increasing cleaning frequency.
Pigment system shall adapt to SORONA processing environment. Carpet products endure long‑term sunlight exposure and detergent cleaning, so pigments shall feature outstanding light and washing fastness. Some general‑purpose masterbatches shift shade after high‑temperature bulking and heat‑setting. Sample color may look acceptable at room temperature yet deviate after thermal treatment and cause mass‑production color defects. Color verification shall be carried out after simulating full spinning, bulking and heat‑setting procedures instead of only checking bobbin shade under normal temperature.
Feeding ratio stability matters for multi‑color small‑batch orders. SORONA melt shows high rheological sensitivity. Tiny feeding fluctuation of color masterbatch will produce visible color difference. Equipped with imported complete BCF production lines, Jiangsu Lingda Chemical Group accumulates experience on ten‑thousands of SORONA colored‑yarn formulas. Full thermal‑processing simulation during color matching eliminates thermal‑induced color‑change risks in advance. Custom service for multi‑color small‑batch SORONA BCF yarn is available.
Downstream purchasers shall conduct simulated tufting and post‑thermal‑treatment tests with SORONA yarn samples, confirm color performance after complete processing before bulk procurement, avoid color deviation caused by heat treatment and guarantee uniform color of finished carpets.
