[Industry News] Within the label, tape, and electronic protective film supply chain, release force is not about being “as low as possible,” but rather about whether it is “stable enough and non-damaging to the adhesive.” Conventional solvent-based release agents often suffer from incomplete crosslinking, silicone migration (silicone transfer), and declining residual adhesion, leading to reduced tack in pressure-sensitive adhesives (PSA), edge oozing after die-cutting, and rainbow patterns on high-speed coating lines. As e-commerce logistics labels, OCA optical adhesive protective films, and new energy cell insulation films impose stricter demands for "light release, high residual adhesion, and long-term stability," sourcing a solvent-based release agent capable of forming a non-migratory, low-surface-energy layer on films such as PET, PP, and PE has become a critical priority for coating enterprises aiming to enhance quality and efficiency. Addressing this "release stability" pain point, IOTA (Anhui IOTA Silicone Oil Co., Ltd.) officially launches Solvent-Based Release Agent IOTA 2512. Featuring core parameters of 30% solids, 9000 mPa·s viscosity (25°C), and a release force of 5-20 g/25mm, and characterized by "high residual adhesion, stable release force, and non-migration," this product emerges as the "Thin-Film Anti-Stick Cornerstone" for packaging, pharmaceuticals, electronics, and food-grade release liners.

Molecular Precision: The Non-Migratory Crosslinked Network on a Solvent Carrier

The core competitiveness of IOTA 2512 stems from its "high solids + high-viscosity prepolymer + solvent-dilutable coating" process combination, constructing an irreversible low-energy barrier on the film surface:

• Non-Migratory Low Surface Energy Layer: Upon coating, the solvent evaporates, and the reactive polysiloxane undergoes full crosslinking via platinum or peroxide systems, forming a networked coating with a surface energy dropping to 20-30 mN/m. This crosslinked matrix locks unreacted low-molecular-weight silicones within the film, 彻底 (completely) suppressing silicone transfer and preventing contamination of adjacent PSA layers.
• Precision Light-Release Anchoring (5-20 g/25mm): The release force sits squarely within the industry's "light release" sweet spot (5-20 g/25mm), ideally suited for low-tack labels, protective films, and OCA release liners. It avoids roll separation due to being too light and protects the adhesive face from damage due to being too heavy, ensuring clean edges post-die-cutting with no residue.
• High Residual Adhesion (Stable Substrate Bonding): "High residual adhesion" implies that the PSA retains excellent bonding strength (industry benchmark ≥80% retention) after liner removal. IOTA 2512 strictly controls free silicone content and ensures thorough curing, guaranteeing minimal impact on the adhesive's initial tack and holding power, eliminating end-user complaints of "failure to bond."
• High-Viscosity Thick-Film Adaptability (9000 cSt): The relatively high viscosity provides excellent roll-coating coverage and anti-sagging properties. It forms a uniform, continuous film on PET/PP/PE surfaces. The coating weight (wet film 3-8 μm) can be flexibly adjusted via solvent dilution ratios, accommodating knife-over-roll, gravure, slot-die, and other coating processes.

Performance Leap: Full-Link Assurance from Anti-Stick to Adhesive Protection

Incorporating IOTA 2512 delivers dual value to coaters and end-brand owners:

• Zero Drift in Aging Release Force: Minimal fluctuation in release force during ambient storage or high-temperature/high-humidity aging, solving the chronic industry issues of liners becoming "too heavy to peel" or "too light to stay laminated" after six months of inventory.
• Enhanced Die-Cutting Yield: High residual adhesion combined with low silicone transfer ensures no silicone bleed at die-cut edges, preventing de-lamination, plate fouling, or bonding failures in subsequent lamination, transfer, or thermal pressing processes.
• Film Substrate Friendly: Exhibits robust anchoring on PET (withstanding 130-150°C), PP, and PE (requiring corresponding cure profiles). It resists edge curl and peeling, with no oil mist or rainbow patterns during high-speed coating (up to 300m/min).

Application Penetration: From Logistics Labels to Cell Insulation

The application boundaries of IOTA 2512 cover film coating sectors most sensitive to release stability:

• PET/PP/PE Release Liners: Used for label backing paper, electronic protective films, OCA optical release films, and medical dressing backings, providing a clean interface for instant, easy release.
• Packaging & Logistics: Coating for express waybills, security labels, and cold-chain labels, ensuring smooth operation on automated labeling lines.
• New Energy & Electronics: Release layers for cell insulation films, FPC process carriers, and RFID smart labels, requiring stable release force after long-term storage.
• Food & Daily Chemicals: Release papers compliant with indirect food contact scenarios (baking parchment, cosmetic transfer patches), with non-migration properties ensuring safety.

IOTA Process Guide: Dilution Optimization for Stable Curing

• Dilution Recommendation: The neat product has 30% solids and 9000 cSt viscosity. It is recommended to dilute with toluene, ethyl acetate, or dedicated solvent blends to a suitable coating viscosity (typically 500-2000 cSt range, depending on the coater).
• Curing Conditions: Adjust according to the curing system (platinum/peroxide). Typical cure for PET substrates is 130-150°C. For PP/PE, adjust to 140-160°C based on thermal tolerance, or utilize low-temperature curing packages.
• Substrate Preparation: Ensure film surface cleanliness exceeds ISO Class 8. Corona treatment or primer application can further enhance anchorage.

The IOTA Quality DNA: Non-Hazardous, Bulk Packaging, Continuous Production Ready

• Industrial Packaging: Standard 200L iron drums (190kg net); special orders available in 950kg IBC totes, reducing changeover frequency on continuous coating lines.
• Safe Logistics: Classified as a non-hazardous chemical for transport. Store sealed in a cool, dry place to prevent solvent loss and moisture ingress.
• Batch Consistency: Parameters including solids, viscosity, and release force undergo 100% factory inspection, ensuring coating formulations remain stable across batches.

Industry Expert Insight: Experts note that the value proposition of release agents is shifting from "mere releasability" to "stable release, adhesive protection, and zero migration." The launch of IOTA 2512 directly targets the most invisible quality pitfalls in coating plants—"high residual adhesion + stable light release + non-migration." It provides a solid domestic alternative to imported solvent-based release agents in electronic-grade protective films and high-end labels. This milestone signifies that domestic release materials have moved from "price competition" into a technical competition era defined by "residual adhesion and release force control."