Materials & Manufacturing
Oct 19, 2026
Snap Lid, Hinge or Film Seal: Choosing the Closure
Snap lids are cheapest and re-closable, hinged closures eliminate a separate part, and film seals give the best leak resistance but require equipment at
Oct 19, 2026
Anti-Fog PP Container for Cold Display
Anti-fog treatment stops condensation forming droplets on the inside of a lid in a chilled display, so the product stays visible. It is a surface additive
Oct 17, 2026
Wall Thickness: Why 0.5mm Changes Everything
Wall thickness is the single specification that most affects what a PP container can survive. Below 0.5 mm it deforms at 90C, cracks on impact and bows
Oct 16, 2026
Sauce Cup Sealing: Foil Film vs Heat Seal vs Plastic Lid
A plastic lid is re-closable and costs more per unit; a heat-sealed foil or film lid is tamper-evident, leak-proof and cheaper, but single-use. For
Oct 16, 2026
How PP Lunch Boxes Are Made: Inside an Injection Molding Food Container Factory
From PP resin pellets to packed cartons — the injection molding, IML, QC and warehousing steps behind every lunch box we ship.
