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Overview

Shrink tunnels are conveyorized heat chambers that shrink film around pre-wrapped products to produce tight, tamper‑resistant packaging. Items pass through on a belt while heated air or infrared elements shrink the film for a neat, stable bundle. Widely used in food, beverage, and industrial packaging, tunnels vary by tunnel length, belt type, heat control and throughput to match product size and production speed.

FAQ

What should I check when buying a used shrink tunnel?

Inspect belt condition, heater elements, fans, temperature controls (PID), insulation, conveyor drive and wiring. Ask for run-time tests, maintenance records, and photos of wear areas. Verify film compatibility and available spare parts.

How do I choose the right size and capacity?

Match tunnel width and conveyor height to your largest product, and choose tunnel length and heat capacity for the film type and required dwell time. Base capacity on packages per minute and planned production growth.

How is a shrink tunnel shipped safely?

Prepare by disconnecting utilities, securing moving parts and, if possible, removing fragile components. Shrink tunnels are usually crated or skidded and transported by flatbed or lowboy. Provide accurate dimensions, weight and forklift/liftgate requirements to the carrier.

What routine maintenance does a shrink tunnel need?

Regularly clean film residue, inspect and replace worn belts, check heater elements and fans, verify temperature accuracy, lubricate bearings and check electrical connections. Schedule preventive checks to avoid production downtime.

Are spare parts and service easy to find?

Availability depends on make and model. Common parts like belts, elements, thermostats and motors are usually available aftermarket. Confirm vendor support or local service options before purchase.