1. Core definition and functional integration ASF, the full name of which is Anti-Shattering Film, is specially designed for automotive display glass. Its core function is to prevent accidental shattering of the glass. Meanwhile, it can integrate additional functions such as AG (anti-glare), AR (anti-reflection), and AF (anti-fingerprint), forming a multi-functional composite protection system. Function classification: According to application requirements, it can be combined with 2-3 functions (such as AG+AR+AF), and is divided into in-screen/out-of-screen explosion-proof films, suitable for scenarios such as in-vehicle display screens and capacitive touch screens (such as OGS structure).
2. Material systems and structures Base material: Optical-grade PET film (such as SRF special PET, to avoid rainbow patterns), hardened (surface hardness 2H-3H) to enhance scratch resistance; Some products use TAC (cellulose triacetate) or glass substrates to enhance the texture. Coatings and adhesives Optical adhesives: Acid-free design (such as FS optical adhesives), to prevent corrosion of ITO coatings; High-performance OCA (Optical Clear Adhesive) ensures high light transmittance (>88%) and bonding strength (>1000g/25mm). Functional layer: Scratch-resistant layer (nano-coating), UV-resistant layer, anti-fingerprint/anti-glare/anti-reflective coating, achieved through wet coating or dry evaporation technology. Structure: Multi-layer composite structure (base material + adhesive layer + functional layer + protective film), ensuring a balance between optical performance and mechanical strength.
3. Processing technology and technological innovation Mainstream processes Wet coating: The mainstream trend, achieving efficient production through the Hirano wet coating production line, increasing output and reducing costs; It is suitable for large-scale manufacturing of AR films and explosion-proof films. Dry evaporation: A traditional process used for depositing high-precision functional layers (such as anti-reflective layers), but it is relatively expensive. Special processes: Acid-free formula glue, gradient window opening (compatible with P+G structure), laser cutting positioning, solving the problem of air bubbles during the height difference and adhesion of silk-screened cover plates.
Quality control Optical performance: Light transmittance >88%, haze <2%, chromatic aberration ΔE<2. Reliability test: 1000 hours of high temperature and high humidity (85℃/85% RH), thermal shock cycle (-40℃ to 125℃), salt spray test (ISO 9227), to ensure no delamination, yellowing or performance degradation. Environmental protection standards: Compliant with RoHS and REACH, low VOC emissions, and recyclable design.
4. Application scenarios and typical cases In the automotive field: Applied to automotive display screens (such as central control screens, instrument panels), sunroof explosion-proof protection, integrating AG/AR/AF functions to enhance display effects and safety; Double-layer protection is achieved through explosion-proof films inside and outside the screen. Consumer electronics: Protection for touch screens of mobile phones, tablets and laptops, preventing glass from shattering and enhancing the touch experience; Compatible with capacitive touch screens (such as OGS structure). Industry and Healthcare: Protection for industrial control panels and medical equipment display screens, suitable for high humidity, high temperature or chemically corrosive environments. Special scenarios: Aviation display Windows, explosion-proof layers for building glass curtain walls, meeting the requirements of weather resistance and safety in extreme environments.