Thermoforming is a go-to method for shaping food-grade plastics into everything from deli trays to industrial storage bins. But choosing the right plastic? That’s where things get technical. Different materials behave very differently when exposed to heat, chemicals, impact—or just a dishwasher. If you’re designing packaging, equipment, or containers for food, four plastics dominate the conversation: HDPE, PP, HIPS, and PETG. Each has its strengths—and some important weaknesses. HDPE: The Industrial Workhorse High-Density Polyethylene is a favorite for cutting boards, food bins, and milk containers. It’s tough, resists harsh cleaners, and shrugs off impact. But it hates heat. Don’t put…
