Flexible packaging built around the application
Plastic Bags Karachi helps buyers specify LDPE, LLDPE and HDPE packaging for industrial, retail, food, textile, garment and distribution uses. A complete brief covers dimensions, thickness, resin blend, sealing, printing, quantity and delivery.
Blown-film extrusion
Three-layer and five-layer coextrusion divide the film structure into functional layers. The layers can be engineered for sealing, toughness, print surface, stiffness, clarity or barrier contribution. The correct construction depends on the packed product and must be confirmed through technical review and trials.
3-layer structures
A typical A/B/A or A/B/C structure can balance seal performance, mechanical strength and surface properties without unnecessary complexity. It is commonly evaluated for liners, heavy-duty bags, printed film and general flexible packaging.
5-layer structures
Five-layer structures give formulators more control over resin placement and layer function. They can support demanding seal, puncture, optical or barrier requirements where a simpler structure is not sufficient.
LDPE and LLDPE film
LDPE supports softness, sealability and clarity; LLDPE is often blended to improve toughness and puncture resistance. Buyers should specify whether the priority is optical quality, load security, drop resistance, freezer use, food-contact documentation or print appearance.
HDPE film
HDPE can provide stiffness and high yield at a lower film gauge. It is commonly considered for shopping bags, liners, produce applications and high-volume packaging where crinkle feel and strength-to-weight matter.
Converting and finishing
- Bottom, side and impulse sealing
- Flat, gusseted, wicketed and roll formats
- Handles, perforation and venting where required
- Flexographic or gravure print planning based on artwork and run length
- Custom packing, bundling and dispatch preparation
Qualification before production
Machine configuration and final availability are confirmed against the approved specification. Request evidence for food contact, resin grade, thickness tolerance, printing, coefficient of friction or other critical requirements before placing an order.