Customizable Low Temperature Flex Testing Equipment for Footwear and Leather Industries

You’ve got a batch of finished shoes or leather samples that need to survive a cold-weather season, and the last thing you want is a crack or delamination showing up after they’ve been shipped to a retailer in a northern climate. That’s the exact problem this unit solves—it simulates freezing conditions so you can spot failures before they cost you a return or a reputation. We’ve seen too many manufacturers skip this step and then scramble when a whole production run fails a field test in January.

What it does is run a set number of flex cycles at a controlled low temperature, typically down to -30°C or -50°C depending on your spec, and it holds accuracy within ±0.5°C. The chamber is SUS304 stainless steel, which matters because you’ll be running it for years and the interior won’t corrode from condensation. Temperature uniformity across the 60×50×60 cm chamber is ±1°C, so you’re not getting hot spots that throw off your results—basically, every sample sees the same cold. The digital LED counter tracks cycles up to 999, which is plenty for most standerd, and the whole thing takes about 60 minutes to reach -30°C from room temp.

Most buyers go with the -30°C model unless they’re testing for extreme cold-weather gear, and the 3-phase 380V power supply is pretty standard for a lab this size. The hermetically sealed 2HP compressor uses an environmentally friendly refrigerant, which is good for compliance with newer regulations. You’ll get an ISO 9001:2008 certifcation with the unit, and we always include a COA on the chamber calibration—though I’d suggest you run your own verification with a traceable thermometer on arrival, just to be safe. Teh 12-month the compressor and controller, but the insulation (rigid foam and glass wool) is basically maintenance-free.

We usually have stock on the -30°C version, but the -50°C model can take 20 days or so for a custom build. The MOQ is one unit, and we ship it crated because at 400 kg you’re not moving it by hand. One thing buyers don’t always think about: chamber door seal is replaceable, and we keep those in stock because after a few years of heavy use, the gasket can lose its grip. Also, this isn’t suited for testing large panels or rolled materials—the inner chamber is 60 cm deep, so you’re looking at shoe lasts, cut pieces, or small assemblies. If you need to test a full bootie or a whole boot, check the dimensoins against your sample first.