Plastic Heat Seal Packaging

Common heat-sealable plastics include polyethylene (PE), polypropylene (PP), and multi-layer laminated films combining materials like PET, foil, and sealant layers. The specific film structure depends on the required moisture (WVTR) and oxygen (OTR) barrier performance for the application, which can be customized during the packaging consultation.

Yes, most flexible plastic films used in bags, pouches, and roll stock are designed with a sealant layer that melts and bonds under controlled heat and pressure. This is the standard method for producing form-fill-seal bags, three-side seal pouches, and retort/aseptic pouches for food and pharmaceutical applications.

Gusset bags, flat-bottom (quad-seal) bags, form-fill-seal pouches, and three-side seal pillow packs are all designed for heat sealing on standard or high-volume filling lines. The right bag format depends on your product's fill volume, required barrier performance, and whether functional features like zippers or degassing valves are needed.

Look for ISO 9001:2015 for quality management, ISO 22000:2018 and FSSC 22000 for food safety, and HACCP compliance for hazard controls. For pharmaceutical, electronic-component, or medical device packaging, production in a Class 10,000 clean room is also an important quality indicator.

Yes, recyclable film structures are available that maintain heat-seal integrity while meeting sustainability goals. These structures are engineered to be compatible with existing filling lines and can be specified with the barrier performance needed for your product without sacrificing recyclability.

Common functional add-ons include zippers, one-way degassing valves, clear windows, spouts, tin-ties, tear notches, and custom die-cut shapes. Surface finishes such as matte, gloss, spot gloss, and metallic speckle effects can also be combined with custom rotogravure printing on most bag and pouch formats.