Sizing Indigo Dyed Yarn for Denim

The Seydel Companies has been manufacturing chemicals for denim longer than any other specialty chemical company.  Our expertise in all areas of the denim manufacturing process are unmatched.  When we say “from fiber to finish”, we mean it.  We have products for every stage of denim manufacturing.   Our products are designed to provide superior results during the application stage while improving performance and quality throughout the entire production process.

We invite you to download and view our catalog of our most popular denim products:

Click Here to Download: Our Complete Chemistry for Denim


Product NameProduct Description
SEYCO FINISH PSA SEYCO FINISH PSA is a 100% organic based beaming aid for cable or rope indigo dyeing machines to reduce the fiber-to-fiber or fiber-to-metal friction at higher beaming efficiencies and at less cost than traditional polyethylene or cationic based products traditionally used. The product is very cost effective and has increased beaming by as much as 30% for experienced beaming operators. Seyco Finish PSA is a nonionic, 38% solids product.
SEYCO FINISH ESA BASESEYCO FINISH ESA BASE is a concentrated, easy to prepare hand builder that provides a smoother, flatter denim fabric while maintaining excellent shrinkage and elongation properties on denim. When Seyco Finish ESA Base is used with Seyco Lube BAM Conc, both provide excellent dimensional fabric stability and a cleaner, more consistent shade with little to no back staining. Normal usage is 10-12 g/l on normal denim fabrics. On denim flat finished fabrics a higher concentration may be needed as the size is totally removed in the causticizing or mercerizing process. Typical use is 20-25 g/l depending on the fabric weight and customer stiffness requirements.
SEYCO FINISH ESA-LKSEYCO FINISH ESA-LK is supplied in a liquid form of a straw to amber color, packed in 55-gallon drums.
SEYCO LUBE BAM-CONC SEYCO LUBE BAM-CONC is a one piece nonionic, wetting/re-wetting agent, high density polyethylene softener, sanforizing lubricant and anti-sticking compound in a single product. Seyco Lube BAM Conc is versatile and can be used on 4 oz to 15.5 oz denim fabrics. The product gives an excellent hand to any denim fabric, eliminates the possibility of needle cutting, prevents corrugation marks from the sanforizer, and keeps the fabric and machinery cleaner for maximum production. Normal usage is 8-10 g/l. We recommend mixing at 55-60˚C while maintaining the same temperature in the finish box.
SEYCO SPERSE 801SEYCO SPERSE 801 is a nonionic, water soluble, polyester based, anti-redeposition aid which prevents the cross staining of indigo dye, sulfur dye or pigment dye. Seyco Sperse 801 keeps the filling yarns cleaner and shades more consistent on the pad steamer for a denim flat finished fabric, and in denim finishing on synthetic/cotton or Lycra/cotton styles. Typical usage in a finish formula is 5-10 g/l depending on the fabric shade and construction. Typically 5 g/l is sufficient.
SEYCO FIX DEM is a cationic fixative designed especially for indigo dyed yarns or fabrics. Seyco Fix DEM provides excellent color retention through many home laundries. It can be applied in slashing or in denim finishing. Normal usage will vary depending on the home laundry requirements and depth of shade. For wash fastness for up to 30 home launderings on a very dark indigo, we recommend 60 g/l, dry-on-dry yarn or fabric. On a typical or mid-depth shade 30 g/l, on a lighter shade 20 g/l is adequate.
SEYCO FIN CCUSEYCO FIN CCU is a self-crosslinking, soft, polyurethane resin. Seyco Fin CCU is applied by padding, coating or spraying on fabrics or garments to give a unique hand and effect. It will also reduce abrasion resistance and improve fabric smoothness. Highly durable finish when cured.
SEYCO FIN IISEYCO FIN II is a self-crosslinking, soft, acrylic that can be applied by padding, spraying or coating to fabrics or garments. Seyco Fin II reduces abrasion resistance, provides a smoother fabric, and gives a slight sheen and unique hand.
SEYCO SOFT LM-5 CONCSEYCO SOFT LM-5 CONC is a concentrated, nonionic, micro-emulsion silicone softener that provides a soft hand to any fabric or garment. Seyco Soft LM-5 Conc is used to help blossom dark shades or make them appear darker. The product is a hydrophobic 45% solids emulsion that helps prevent spotting.
SEYCO SOFT ABBA CONC SEYCO SOFT ABBA CONC is a concentrated, nonionic, micro –emulsion silicone softener that provides a luxurious hand to any fabric or garment. Seyco Soft ABBA Conc will not alter shades at a neutral pH and will enhance darkness at lower pH levels. The product is a 56% solid emulsion and will not cause spotting.
SEYCO ANTIZONE BASE and CONC 80SEYCO ANTIZONE BASE and CONC 80 is a quaternary amine, cationic softener that prevents ozone or UV fading, or yellowing on properly neutralized or rinsed fabrics and garments. Seyco Antizone gives a very soft hand to cotton or cotton/synthetic blends. It can be applied by padding or spraying. It is available as a 100% wax or as a soft, 80% paste.
SEYCO REZ ZFF and PFFSEYCO REZ ZFF and PFF are self crosslinking, pre-catalyzed, glyoxal resin that gives optimum performance and durability on cotton or cotton/synthetic fabrics. It is available in a zero-formaldehyde version (ZFF), or a very low formaldehyde version that meets international testing norms and standards for formaldehyde content.