Digital Transparent Paste

Digital Transparent Paste for screen printing is a transparent functional ink and paste system specially developed for high resolution and digital pattern design. Its core features and applications can be summarized as follows:

Composition and Function:
Resin system: High transparency and scratch resistant modified acrylic or epoxy polyurethane hybrid resins are mostly adopted to ensure good adhesion and surface hardness on substrates such as glass, PET, and PC simultaneously.
Functional fillers: They may contain transparent conductive particles such as nano silver wires, ITO, ATO, etc., or be purely transparent media, used as conductive traces, shielding layers or high transparency decorative layers.
Rheological control: By introducing microgels or nano silica sol, the shear thinning behavior is achieved, which not only ensures clear edges during screen printing but also enables rapid leveling during high speed digital inkjet printing scraping, avoiding screen patterns.

Digital advantages:
Compatible with laser direct writing,digital inkjet or digital screen printing plate making processes, it can bypass traditional film and achieve rapid switching between small batches and multiple versions.
It features high transparency, and can maintain the original luster of the substrate even after overprinting with CMYK or spot color dots. It is particularly suitable for scenarios such as glass decoration, touch panel frames, and LED light guide plates.

Typical process parameters:
Screen: 90 to 150T polyester mesh, solvent resistant photosensitive adhesive, film thickness 5 to 15 um.
Interlayer overprint:Due to the extremely low color shift and shrinkage rate of Digital Transparent Paste, an interlayer alignment accuracy of 20um can be achieved,meeting the requirements of narrow bezel touch lines.

Application example:
Capacitive touch screen: Nano silver transparent conductive circuits are silk screened on glass or film substrates, with a line width line spacing of up to 30 um, transmittance more than 87 percent, and surface resistance less than 50Ω.
Automotive HUD reflector: Multiple layers of transparent media and high refraction paste are laminated to form a semi transparent and semi reflective film system, with a total thickness of less than 5 um.
High end cosmetic bottles: Digital silk screened gradient transparent texture, combined with hot stamping and silk-screened white, achieving a 3D depth of field effect
In short, Digital Transparent Paste combines the covering power of traditional screen printing with the flexibility of digital manufacturing processes, becoming a key material for achieving invisible functional patterns and decorative patterns in the fields of glass, plastic and flexible electronics.