Name: Waterborne Cationic Polyurethane Dispersion For Ink Receptivity Of DTF Heat Transfer Film
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Waterborne Cationic Polyurethane Dispersion For Ink Receptivity Of DTF Heat Transfer Film

This Waterborne Cationic Polyurethane Dispersion is a specialized, high-performance coating binder engineered explicitly for enhancing the ink receptivity of Direct-to-Film (DTF) heat transfer films. As a premium Waterborne Cationic Polyurethane Dispersion, it adheres to stringent international coating standards, featuring a scientifically designed cationic formulation that ensures superior affinity and bonding with commonly used pigment inks. The positively charged polymer matrix effectively interacts with anionic ink components, promoting excellent ink wetting, rapid fixation, and vibrant color expression on the transfer film surface. Its solvent-free, eco-friendly composition provides stable performance and reliable processing adaptability in high-speed coating applications. Specifically developed for DTF technology, this Waterborne Cationic Polyurethane Dispersion ensures outstanding print clarity, adhesion durability, and transfer efficiency, making it the preferred choice for manufacturers seeking advanced and high-quality functional coatings for heat transfer films.

Item No :
Waterborne Cationic Polyurethane Dispersion RHERI UA415
Application :
Used in packaging, textile, printing, automotive interior transfer coating.
Special Feature :
Excellent ink receptivity, superior cutting performance, high color vibrancy, and resistance to common defects such as snowflaking, bleeding, and pinholes.

Description

Product Overview

This Waterborne Cationic Polyurethane Dispersion for Ink Receptivity of DTF Heat Transfer Film typically presents as a milky liquid with a cationic nature, specifically formulated for functional coatings. With a solids content of 30±1.5%, this concentration is engineered to provide an optimal balance between film formation efficiency and key performance characteristics such as ink reception and flexibility. The pH value ranges from 4.0 to 6.0 (at 25°C), a critical acidic range that stabilizes the cationic charge, ensuring effective interaction with anionic components in pigment inks and substrates. When measured with a Brookfield viscometer at 25°C, this Waterborne Cationic Polyurethane Dispersion exhibits a viscosity of less than 500 mPa·s, offering excellent fluidity and leveling properties suitable for uniform application via spray, roll-coat, or curtain coating methods in industrial settings. This specialized Waterborne Cationic Polyurethane Dispersion delivers outstanding ink receptivity, vibrant color development, and superior cutting performance for DTF films, effectively mitigating common defects like snowflaking, water marks, or pinholes. For storage, it remains stable for a minimum of 6 months at 20°C in its original, sealed containers. A storage temperature range between 5°C and 30°C is recommended. It is crucial to avoid freezing, prolonged exposure to temperatures exceeding 30°C, and contamination by bacteria, fungi, or algae to preserve its optimal physicochemical properties and application performance.

Waterborne Cationic Polyurethane Dispersion

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Key Features

Superior Ink Receptivity and Fixation: Specifically engineered for DTF applications, this Waterborne Cationic Polyurethane Dispersion leverages its inherent positive charge to provide exceptional affinity for anionic pigment inks. This ensures rapid ink wetting, high dye-load capacity, and excellent color development, forming a highly receptive layer crucial for sharp image reproduction on heat transfer films.
Excellent Film Integrity and Cutting Performance: The cured film from this dispersion demonstrates outstanding flexibility, toughness, and cohesion. This combination delivers superior cutting performance , enabling clean, precise, and fray-free cuts during the die-cutting or plotting of transfer designs, which is essential for intricate graphics and high production yields.
Enhanced Color Vibrancy and Defect Resistance: This formulation is optimized to achieve high color vibrancy ( by promoting optimal pigment dispersion and binding at the surface. Furthermore, its balanced rheology and film-forming characteristics effectively prevent common coating defects such as snowflaking, water marks , and pinholes, ensuring a consistent and flawless receptive surface.
Environmentally Compliant and Stable Performance: As a solvent-free Waterborne Cationic Polyurethane Dispersion, it minimizes VOC emissions and aligns with stringent environmental regulations. The product exhibits stable physical properties, including a controlled viscosity (<500 mPa·s at 25°C), defined solids content (30±1.5%), and an acidic pH range (4.0-6.0), guaranteeing consistent handling, application reliability, and storage stability.

Parameter	Typical Value	Unit	Notes
Viscosity (25°C, Brookfield RV)	< 500	mPa·s	Spindle 3, 20 rpm
Soild Content	30±1.5	%	/
pH Value	4.5-6.5	–	/
Shelf Life	12	months	Stored in sealed containers at 5–35°C
Storage	Cool, dry place	–	Avoid direct sunlight and moisture

Parameter	Typical Value
Apprearance	Milky white
Modulus(Mpa)	4.5-6
Elongation%	≥450
Tensile Srtrength(Mpa)	≥35
Tg (℃)	~40℃

Applications

Direct-to-Film (DTF) Heat Transfer Printing: This Waterborne Cationic Polyurethane Dispersion for Ink Receptivity of DTF Heat Transfer Film is the core material for formulating the functional receptive layer on DTF films. Its primary application is to receive and fix inkjet-printed designs, providing superior ink adhesion, color vibrancy, and sharpness before the design is heat-transferred onto textiles. As a key component, this Waterborne Cationic Polyurethane Dispersion ensures the printed film exhibits excellent cutting performance, preventing edge cracking during weeding (the removal of excess film around designs).

Textile Decoration and Apparel Industry: Specifically engineered for creating DTF transfer papers and films, this dispersion is applied as a coating to enable high-quality, full-color graphic transfer onto various fabrics, including cotton, polyester, and blends. The receptive layer formed by this Waterborne Cationic Polyurethane Dispersion allows for complex, detailed, and vibrant designs to be transferred with a soft hand feel and good durability on the final garment, making it ideal for custom apparel, sportswear, and fashion textiles.

Functional Coating for Specialty Transfer Films: Beyond standard ink reception, its stable formulation supports applications in creating films with additional functionalities. It serves as a reliable base coating , a release layer component , and the essential ink-receptive layerin multi-layer film constructions. Its defect-resistant properties (against snowflaking, water marks, pinholes) ensure high production yield and consistent quality in industrial coating lines for transfer film manufacturing.

Promotion & Signage: The technology enabled by this dispersion is also applicable for producing high-quality transfers for promotional items, bags, hats, and signage, where color fidelity, fine detail, and adherence to various substrates are critical. Its solvent-free nature and reliable performance meet the growing demand for environmentally conscious and efficient digital decoration solutions across multiple sectors.

Benefits

Superior Print Quality and Process Efficiency: The unique cationic chemistry of this Waterborne Cationic Polyurethane Dispersion for Ink Receptivity of DTF Heat Transfer Film ensures rapid, high-affinity binding with anionic pigment inks. This results in exceptional ink receptivity, vibrant color output, and sharp graphic definition, significantly reducing ink waste and the need for reprints. Its formulation directly prevents common defects like snowflaking and pinholes, enhancing production yield and consistency.
Environmental Compliance and Operator Safety: As a solvent-free, water-based system, this Waterborne Cationic Polyurethane Dispersion drastically reduces volatile organic compound (VOC) emissions compared to solvent-borne alternatives. It aligns with stringent international environmental regulations (e.g., REACH, EPA standards) and provides a safer workplace by minimizing exposure to hazardous air pollutants, supporting sustainable manufacturing practices in the textile and printing industries.
Excellent Film Performance and Durability: The cured film derived from this dispersion offers outstanding mechanical properties, including excellent flexibility and toughness. This translates directly into superior cutting performance during the weeding process of DTF transfers, ensuring clean edges and intricate detail retention. The stable physical properties (controlled viscosity, solids content, and pH) of this Waterborne Cationic Polyurethane Dispersion guarantee reliable coating application, storage stability, and consistent end-product performance.
Broad Substrate Adaptability and Enhanced Product Value: The formulation demonstrates excellent adhesion to various film substrates used in DTF processes. By enabling high-definition, durable, and soft-hand-feel transfers onto diverse textiles (cotton, polyester, blends), it allows manufacturers to expand their product offerings. Utilizing this advanced dispersion upgrades the final decorated garment's aesthetic and functional value, providing a competitive edge in markets demanding high-quality digital decoration.

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