HIPS Black Sheet For Cup Lid

Our professional production line is specially customized for manufacturing food-grade HIPS black sheets for cup lids. Combined with mature modified formula technology, precision extrusion system and strict quality inspection procedures, the whole production process is highly specialized to solve common industry problems such as insufficient rigidity, easy brittleness, surface odor, uneven black color and poor high-temperature forming stability. It fully meets the strict molding and food safety requirements of disposable beverage cup lids, coffee cup lids and food container lids.

1. Food-Grade Raw Material Dosing & Automatic Mixing System

The entire production starts with strictly selected high-impact food-grade HIPS virgin resin and odor-free black masterbatch dedicated for food packaging. We completely reject recycled materials and inferior additives that may cause peculiar odor, precipitation or color deviation. Adopting automatic proportional batching and high-speed uniform mixing technology, the raw materials are fully fused without component separation. This ensures every batch of HIPS black sheet features pure black tone, stable toughness and food-safe performance, avoiding color difference and hidden safety risks.

2. Precision Constant-Temperature Extrusion & Melt Filtration Process

Equipped with dedicated single-screw constant-temperature extrusion equipment, the production line adopts segmented temperature control suitable for HIPS material characteristics. It realizes uniform plasticization without local overheating, effectively preventing burnt odor and molecular degradation. Meanwhile, the multi-layer high-precision melt filtration system thoroughly filters foreign particles, impurities and unmelted aggregates. This process guarantees the black sheet surface is smooth, spot-free and uniform, completely adapting to high-speed vacuum forming of cup lids.