Preheating Separator Layer for Laser Cutting Efficiency

The patent applies preliminary action by preheating the separator layer before laser cutting. The preheating unit heats the thermoplastic resin particles in the separator layer to a temperature where they become more transparent to the laser beam (typically above the glass transition temperature), thereby improving laser beam transmittance and enabling faster cutting speeds. This preliminary thermal treatment resolves the contradiction by preparing the material in advance to reduce energy loss during the subsequent cutting process.

The patent employs parameter changes by altering the temperature of the thermoplastic resin particles in the separator layer. By changing the temperature parameter from ambient to elevated (above glass transition temperature), the optical properties of the resin change, increasing laser beam transmittance. This parameter change directly addresses the energy loss issue and enables higher productivity in the cutting process.

The preheating of the separator layer before cutting serves as a preliminary action that prepares the material for efficient laser cutting. By preheating the thermoplastic resin particles, the material becomes more receptive to laser energy, allowing for faster cutting speeds while maintaining acceptable cut surface quality. This eliminates the need for prolonged irradiation times and resolves the time-quality trade-off.

The patent implements periodic action through the two-stage process: first preheating the separator layer, then performing the actual laser cutting. This periodic application of thermal energy in distinct phases (preheating phase followed by cutting phase) allows the material to be optimally prepared before the cutting action, achieving both good cut quality and reduced total processing time.