| PE Film |
LDPE or HDPE bags, liners, and pouches |
Approx. 120–180°C |
30–150 microns |
2–5 mm |
Hand-operated impulse sealer for light-duty work; foot-operated model for frequent production |
Retail bags, hardware, agricultural products, and general industrial packaging |
Use lower heat and shorter dwell time for thin LDPE. Excessive heat may shrink or distort the film. |
| PP Film |
Cast polypropylene or oriented polypropylene bags |
Approx. 140–200°C |
25–100 microns |
2–5 mm |
Impulse sealer with adjustable temperature and controlled sealing time |
Food accessories, stationery, textiles, and clear product bags |
PP generally requires more heat than PE. Confirm the film's sealant layer before selecting the operating range. |
| PE-Laminated Paper |
Paper laminated with a heat-sealable polyethylene layer |
Approx. 130–180°C |
60–180 gsm paper plus laminate |
3–8 mm |
Wide-jaw impulse sealer with adjustable pressure and sealing time |
Bakery bags, dry goods, powders, and paper-based retail packaging |
Pressure must be sufficient to bond the laminate without scorching the paper. A wider seal can improve package integrity. |
| PET/PE Laminated Film |
Polyester outer layer with polyethylene inner sealant layer |
Approx. 150–210°C |
70–180 microns |
3–8 mm |
Heavy-duty impulse sealer or band sealer for higher throughput |
Stand-up pouches, frozen products, snacks, and flexible industrial packaging |
Only the PE inner layer should melt and form the seal. The PET layer provides strength but is not normally the sealing layer. |
| Aluminum Foil Laminate |
Paper/foil/polymer or PET/foil/polymer laminate |
Approx. 160–220°C |
80–200 microns |
5–10 mm |
Heavy-duty impulse sealer with strong jaw pressure; continuous band sealing for high-volume work |
Coffee, pharmaceuticals, chemicals, moisture-sensitive goods, and light-sensitive products |
The polymer inner layer determines sealability. The foil layer can increase heat transfer and may require controlled dwell time. |
| Kraft Paper with Polymer Liner |
Multi-layer kraft paper bags with PE or other heat-sealable inner film |
Approx. 140–190°C |
80–250 gsm paper plus inner liner |
5–10 mm |
Foot-operated or pneumatic impulse sealer with a wide sealing bar |
Pet food, seeds, powders, construction materials, and bulk dry products |
Seal only where the polymer liner is present. Uneven paper surfaces may require increased pressure or a wider seal. |
| PVC Film |
Flexible PVC bags, sleeves, and protective packaging film |
Approx. 120–170°C |
50–200 microns |
2–5 mm |
Impulse sealer with accurate heat and time controls |
Garment packaging, stationery, small consumer goods, and protective covers |
Use adequate ventilation and follow local safety requirements because overheating PVC can produce irritating fumes. |
| Cellophane with Heat-Sealable Coating |
Coated cellulose film designed for heat sealing |
Approx. 120–180°C |
20–40 microns |
2–4 mm |
Low-to-medium power impulse sealer with fine temperature adjustment |
Confectionery, gift packaging, bakery products, and presentation packaging |
Uncoated cellophane is not generally heat-sealable. Confirm the coating and test for brittleness or discoloration. |
| Co-Extruded Heat-Sealable Film |
Multi-layer film with a dedicated inner sealing layer |
Approx. 130–200°C |
40–200 microns |
3–8 mm |
Adjustable impulse sealer for small batches; band sealer for continuous production |
Food pouches, medical packaging, e-commerce bags, and specialty flexible packaging |
Identify the sealant layer and its sealing window. Wider seals and stable pressure help compensate for thicker structures. |