News

Knowledge

Company News

Application Mind Map

Test Report

Technical Article

Industry News

What types of UV transfer adhesives are there?

Release time:

2026-09-10 06:54

What types of UV transfer adhesives are there?

UV transfer adhesives have evolved into a variety of types, each tailored to specific performance characteristics and application requirements. These different formulations vary in hardness, elasticity, adhesion, weather resistance, and substrate compatibility. Understanding these classifications and their respective attributes helps ensure the selection of the most suitable product for practical applications.

I. Classification by Hardness and Elasticity

Based on the hardness and elasticity of the cured film, UV transfer adhesives can be classified into high-hardness, high-scratch-resistant, highly elastic, and matte types.

High-hardness products exhibit elevated surface hardness upon curing, effectively resisting scratches and abrasion during everyday use, making them suitable for surfaces that experience frequent contact, such as smartphone back covers and buttons. These formulations achieve enhanced surface hardness by increasing the proportion of multifunctional acrylate monomers, thereby boosting crosslink density.

High‑scratch‑resistant products excel in wear resistance, enduring steel‑wool abrasion under moderate loads without leaving noticeable marks; some high‑performance variants can withstand a particularly high number of steel‑wool test cycles. These products are ideally suited for applications where long‑term aesthetic integrity is critical.

High‑elasticity products offer an elastic feel similar to silicone rubber and can withstand bending tests without cracking, deforming, or detaching. These products are ideal for applications involving bending or curved surfaces, such as textured decorative finishes on curved glass back covers.

Matte‑type products feature low gloss and are suitable for decorative applications that require a matte surface finish. By incorporating matting agents or specialized resin systems into the formulation, varying degrees of matte finish can be achieved.

II. Classification by Substrate Compatibility

Based on their adhesion performance on various substrates, UV transfer adhesives can be classified into general-purpose and specialized types.

General-purpose products exhibit excellent adhesion to common plastic substrates such as PC, PET, and PMMA, as confirmed by the cross‑hatch test, meeting the requirements of most standard applications. With a broad range of applicability, these products are the mainstream choice in the market.

TPU‑specific products are specially formulated for challenging substrates such as TPU, offering excellent adhesion and zero shrinkage. Due to TPU’s low surface energy, conventional UV transfer adhesives often fail to deliver satisfactory bonding; the TPU‑specific formulation addresses this issue by optimizing the adhesion‑promoting additives in its composition.

This glass‑substrate‑specific product is developed to meet the requirements of transfer printing on glass surfaces, delivering adhesion that meets stringent standards. Given the smoothness and low surface energy of glass, a dedicated adhesion‑promoting system is essential to ensure robust bonding of the adhesive layer.

III. Classification by Curing System

Depending on the curing mechanism, UV transfer adhesives can be classified into pure free-radical curing types and hybrid curing types.

Pure radical‑curing systems are the most common type; they rely on photoinitiators to generate free radicals under UV irradiation, which then initiate the chain‑growth polymerization of acrylate double bonds. These formulations cure rapidly and are relatively straightforward to formulate, making them the market’s mainstream products.

Hybrid curing combines the advantages of both free-radical and cationic curing, offering rapid cure kinetics, high crosslink density, low volumetric shrinkage, and pronounced post‑cure effects. The cationic curing system is unaffected by oxygen inhibition and exhibits dark‑cure capability, making it well suited for applications with stringent requirements for cure depth and shrinkage.

IV. Classification by Special Function

To meet specific application requirements, UV transfer adhesives have also been developed into a variety of functional products.

Low-shrinkage products, formulated with a blend of low-shrinkage reactive monomers, effectively reduce curing shrinkage and ensure high replication accuracy for fine microstructures, making them ideal for high-precision applications such as optical brightness enhancement films and microlens arrays.

Yellowing‑resistant products utilize an aliphatic polyurethane acrylate system; their molecular structure contains no oxidizable benzene rings, resulting in superior yellowing resistance compared to aromatic systems. They are well suited for applications with stringent requirements for optical performance and long‑term aesthetic stability.

Moisture‑ and heat‑resistant products enhance the coating’s resistance to humidity and heat as well as its weatherability through the incorporation of silicone‑modified resins or silicone‑modified acrylate oligomers, thereby meeting the stringent long‑term reliability requirements of high‑end applications such as in‑vehicle displays and optical components for new energy technologies.

V. Classification by Application Scenario

From the perspective of application scenarios, UV transfer adhesives can be categorized into types such as those for 3C electronics, automotive interiors, optical films, and home appliance panels.

3C electronic products are primarily used for decorating components such as mobile phone keycaps, rear‑cover textures, camera bezels, navigation keys, and logos, with stringent requirements for hardness, scratch resistance, and adhesion. Automotive interior products are employed for texturing and coating interior parts like door panels and center‑console trim strips, demanding excellent weatherability, resistance to humidity and heat, and chemical resistance. Optical film products are utilized in the fabrication of precision optical components such as brightness‑enhancing films and microlens arrays, with strict specifications for low shrinkage, high light transmittance, and superior replication accuracy. Home appliance panel products are applied to create textured finishes on decorative elements like glass panels in household appliances.

VI. Conclusion

UV transfer adhesives can be classified along multiple dimensions, including hardness and elasticity, substrate compatibility, curing system, special functionalities, and application scenarios. High-hardness, high-scratch‑resistance, high-elasticity, and matte formulations address diverse surface‑performance requirements; general‑purpose, TPU‑specific, and glass‑specific grades cater to the adhesion needs of different substrates; pure radical‑curing and hybrid‑curing systems each offer distinct advantages in curing efficiency and shrinkage; while low‑shrinkage, yellowing‑resistant, and damp‑heat‑resistant variants are engineered to meet specific performance criteria. In practical selection, it is essential to choose a UV transfer adhesive type that aligns with the product’s application context, substrate characteristics, and required performance attributes.

Disclaimer: The above content has been compiled from publicly available sources and is provided for reference only. If any infringement occurs, please contact us, and we will address it promptly.

Bossin Related Product Recommendations – Membrane Materials
Transfer adhesive
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-151	Modified epoxy acrylate	Low halogen, yellowing-resistant, excellent plating performance, and strong adhesion.
B-206	Aliphatic polyurethane acrylate	Weather resistance, flexibility, and yellowing resistance
B-216	Aliphatic polyurethane acrylate	Fast curing, high fullness, and excellent toughness.
B-221	Aliphatic polyurethane acrylate	Fast curing, resistant to boiling water
B-509B	Polyester acrylate	Good adhesion, good flexibility, and excellent pigment wetting.
B-546	Polyester acrylate	Good adhesion, fast curing, and excellent flexibility.
B-619W	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, wear resistance, and chemical resistance.
B-912	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, and outstanding chemical and wear resistance.
B-919B	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, and outstanding chemical and wear resistance.

Share to:

How to Use UV Transfer Adhesive

The core materials that constitute UV transfer adhesive