Custom Water Cup Sealing Machine Product & Products

Thermal conduction sealing applies continuously heated metal tooling to fuse the film and cup rim under pressure, demanding precise dwell times (typically 0.6 to 1.2 seconds) and steady temperature regulation. Ultrasonic sealing generates localized 20–35 kHz vibrations that melt the polymer interface instantly without heating the surrounding tooling or fluid, cutting cycle times and allowing reliable seals even if droplets touch the cup flange.

Our systems use closed-loop servo dance-arm tension regulators and self-leveling floating heater die heads with multi-spring or pneumatic equalization blocks. This maintains uniform contact force (within ± 1.5 N/cm²) across the entire circumference, even if film thickness varies across rolls.

Yes, using our Quick-Change Tooling (QCT) package. Changeover takes under 20 minutes and involves swapping cup nest plates, adjusting cutting die profiles, and updating PLC recipes to switch between heat profiles for plastic cups and higher-pressure induction/conductive settings for aluminum trays.

We employ two non-destructive inline inspection methods: multi-angle optical vision cameras that inspect the seal boundary for wrinkles, bubbles, and channel leaks; and inline servo-driven compression belts that measure deflection response to instantly reject unpressurized or leaking cups without slowing production.

For shelf-life-sensitive or low-oxygen mineral formulations, the machine can integrate a multi-stage Modified Atmosphere Packaging (MAP) module. This performs vacuum evacuation followed by sterile Nitrogen (N2) flushing before heat sealing, reducing residual headspace oxygen below 0.5%.

Maintenance teams should use high-temperature anti-seize paste during cartridge insertion, perform monthly infrared calibration across the heating plate, and clean sealing surfaces with non-abrasive brass tools. Solid-state relays (SSRs) should also be checked quarterly to prevent zero-cross drift.