Overview
Extra Soft Printing Binder is a high-performance acrylic copolymer emulsion specifically formulated for textile printing applications where fabric hand feel is critical. Unlike conventional binders that may stiffen fabrics, this product maintains the natural drape and softness of textiles while providing excellent pigment adhesion. Developed in response to demand from premium apparel manufacturers, it revolutionized the printing of delicate fabrics like modal, bamboo, and high-thread-count cotton. The binder forms a flexible polymer network upon curing, allowing printed areas to retain stretchability comparable to unprinted fabric.
Physical and Chemical Properties
The binder exhibits unique rheological properties with a viscosity range of 2000-5000 mPa·s (25°C), making it suitable for both screen and digital printing methods. Its low glass transition temperature (Tg) of -20°C to -10°C ensures permanent softness even after multiple washes. Chemically, it's an aqueous dispersion of crosslinkable acrylate polymers with particle sizes typically below 0.1μm. The formulation includes soft segments (butyl acrylate) for elasticity and hard segments (methyl methacrylate) for durability. Most commercial variants are pH-stabilized between 7-8 and free from APEO and heavy metals to meet eco-textile standards.
Main Applications
Primarily used in pigment printing for intimate apparel, baby clothing, and premium activewear where skin contact softness is paramount. The binder enables vibrant prints on stretch fabrics without compromising the elasticity needed for body-hugging garments. In home textiles, it's favored for bedding and towel printing where stiff binders would reduce comfort. Some technical applications include printed medical textiles where flexibility and biocompatibility are required. The product shows particular compatibility with cellulose fibers but can be modified for synthetic blends through crosslinking agents.
Safety and Storage
As a water-based emulsion, the binder presents low acute toxicity but may cause mild skin irritation with prolonged contact. Proper PPE including nitrile gloves and eye protection is recommended during handling. The product is not classified as hazardous under GHS when monomer content is below 100ppm. Storage requires protection from freezing and prolonged exposure to temperatures above 35°C which may cause coagulation. Standard 200kg plastic drums or IBC totes are common packaging options. Shelf life typically reaches 12 months when stored in original sealed containers below 30°C, though viscosity should be checked after 6 months.
B2B Procurement Guide
Industrial buyers should evaluate binders based on four key parameters: stiffness rating (measured by cantilever test, ideally <3cm), wet rub fastness (>4 on ISO 105-X12), wash resistance (>20 cycles), and formaldehyde content (<75ppm). Request technical datasheets with DSC (Differential Scanning Calorimetry) data to verify Tg values. For bulk procurement (5+ tons), consider customized formulations with adjusted crosslinking density for specific fabric types. Leading manufacturers include BASF, Dow, and local specialists like Shanghai Anoky Group. MOQs typically start at 500kg for standard grades.
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