How Does the SGF-40RF-Y Achieve Beautiful, Leak-Proof Seals on Plastic Tubes?

Question: We manufacture cosmetic creams and pharmaceutical ointments in plastic tubes. Our current sealing process often produces wrinkled, inconsistent seals that sometimes leak during shipping. How does the SGF-40RF-Y fully automatic tube filling and sealing machine ensure consistent, attractive seals?

Answer:

The SGF-40RF-Y addresses the sealing challenge through its advanced dual-surface heating system—a technology that sets it apart from basic tube sealers. Instead of heating only from the outside, this machine simultaneously heats both the inner and outer surfaces of the tube tail .

The inner and outer heating principle is critical for plastic and laminated tubes. External-only heating often results in the outer wall reaching sealing temperature while the inner wall remains cooler, leading to weak bonds that fail over time. By heating from both sides simultaneously, the SGF-40RF-Y ensures the tube material reaches the optimal sealing temperature throughout its thickness .

The result is beautiful, wrinkle-free sealed tails that resist leakage—a feature particularly valued in cosmetic tube sealing and pharmaceutical applications . The machine's 3.3KW hot fan provides the thermal power needed to maintain this performance even during extended production runs at 20-45 tubes per minute.