The primary technological purpose of 3M 1641 is to provide a non-slip, scratch-proof lens edging and grinding barrier. During modern prescription lens (Rx) generation, expensive resin, polycarbonate, or glass blanks are subjected to extreme hydraulic clamping pressures, aggressive diamond cutting wheels, and chemical slurry polishing cycles. The calibrated 3M™ 1641 film acts as a micro-elastic armor, absorbing shear stresses, locking the lens securely to the generator chuck without slippage (preventing axis twist errors), and peeling away in a single flawless sheet with absolutely zero adhesive transfer, residue ghosting, or optical haze.
Performance Features
For high-volume ophthalmic Rx labs, automated mass-production lens factories, and smart device camera module component suppliers, 3M™ 1641 establishes a zero-defect yield guarantee:
Anti-Slippage Axis Lock (Zero Torque Twist): Formulated with premium shear resistance. It holds the lens blank absolutely rigid against heavy rotational torque during diamond-wheel edging, avoiding scrap rates caused by geometric axis shifting.
Micro-Scratch Surface Armor: The tough yet elastic blue PVC backing prevents catastrophic surface scratches, abrasions, pit marks, and micro-cracks from hard glass debris and metallic blocking alloys.
100% Residue-Free Optical Clean Peel: Features a specialized low-tack cohesive adhesive formula. It detaches effortlessly from delicate anti-reflective (AR) treatments and multi-layer optical coatings without lifting the coatings or leaving sticky residue.
Excellent Fluid & Coolant Immersion Defense: Fully repels heavy industrial water coolants, fine abrasive cerium oxide polishing slurries, and ultrasonic cleaning line detergents without edge-lifting or adhesive dissolving.
TDS
| Material & Mechanical Property | Calibrated Metric Value | Calibrated Imperial Value | Testing Standard / Method |
|---|---|---|---|
| Product Core Designation | 3M™ 1641 Surface Saver | 3M™ 1641 Surface Saver | Optical Lens Processing Grade |
| Carrier Base Film Material | Premium Elastic Polyvinyl Chloride | Premium Elastic Polyvinyl Chloride | Highly Conformable PVC Film |
| Adhesive Chemistry Formula | Low-Tack Cohesive Acrylic | Low-Tack Cohesive Acrylic | Zero-Haze Optical Clean Peel |
| Total Tape Thickness Profile | 0.080 mm / 80 μm (±5%) | 3.15 mil Caliper | ASTM D-3652 Precision Sensor |
| Visual Appearance Color | Translucent Blue | Translucent Blue | High Visual Quality Check Path |
| Adhesion to Steel (Initial) | 0.5 to 1.5 N/cm (Low-Tack) | 4.5 to 13.7 oz/in Width | ASTM D-3330 Coating-Safe Peel |
| Adhesion to Acrylic / Lens | Balanced Structural Grab | Balanced Structural Grab | Prevents High-RPM Axis Drift |
| Chemical Slurry Compatibility | Complete Repulsion | Complete Repulsion | Water / Coolant / Alloy Immune |
Application
Prescription Lens (Rx Optic) Lab Processing: Protecting organic resin, polycarbonate, high-index, and mineral glass blanks throughout the computerized digital surfacing, back-side grinding, and mechanical polishing process.
Automated Lens Edge-Finishing: Safeguarding the convex/concave geometry of delicate finished single-vision or progressive eyeglass lenses while being dry-cut or wet-shaven into final plastic or metal frames.
Smart Device Camera & Sensor Lens Coating: Surface protection for miniature glass and plastic optical lens arrays, automotive LiDAR camera elements, and VR/AR headset lenses during cutting, anti-fingerprint (AF) dipping, or anti-reflective (AR) sputtering tracks.
Premium Optical Crystal Component Polishing: Serving as a removable low-tack handling skin for high-purity quartz crystals, sapphire glass watch crystals, and laser diode reflectors.
High-speed automated optical lens edgers and automated peeling systems require perfectly slit tape edges and zero roll deformation to prevent machine jams. STK directly optimizes your ophthalmic manufacturing pipeline:
Micro-Precision Custom Roll Slitting: Ragged edge-shearing on PVC film leads to micro-tears and line downtime under machine tension. STK utilizes advanced chilled rotary knife slitters to convert master logs of 3M™ 1641 into standard industry widths (e.g., 24mm, 50mm, 75mm, 100mm) with perfectly clean, non-blocking roll faces.
Custom Precision Die-Cut Protective Pads: Beyond standard slit rolls, STK can custom die-cut 3M™ 1641 into perfect circles, ellipsis pads, or complex shapes directly matching various lens diameter sizes, complete with easy-peel pull tabs (引手) to speed up manual lab processing.
Alternative Sourcing & High-Volume Wholesale Continuity: As an advanced industrial tape converter, STK offers both genuine factory logs and premium STK-optimized equivalent alternatives that match the critical anti-slip, zero-residue requirements of 3M 1641, significantly slashing your annual optical lab consumable budget.
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Industrial Packaging
Packaged in vacuum-sealed moisture-barrier cartons, securely stacked onto heavy-duty pallets to protect delicate pure adhesive edges from pressure deformation or humidity during overseas transit.
Standard Dispatches
Warehouse stock configurations are checked, packed, and loaded for shipping within 3–5 working days with complete GHS MSDS data sheets.
Custom OEM Slitting Orders
Custom roll widths or specific long-length spools are slit, quality-audited via digital calipers, and dispatched within 10–14 working days post blueprint lock.
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