The technology and process of plastic shopping bags with hard handles focuses on features such as the hard handle design, side gussets, LDPE material, and snap closures:
1. Material Structure
LDPE (Low-Density Polyethylene): The bag body is made of LDPE film, which offers excellent flexibility, transparency, tear resistance, and abrasion resistance.
Thickness: Generally ranges from 50–120 microns and can be customized based on the intended use.
Environmental Performance: LDPE is recyclable, aligning with the trend for eco-friendly packaging.
2. Bag Structure
Side Gusset Design: Gussets are added to the sides of the bag body to expand the bag's capacity, allowing it to expand three-dimensionally to accommodate more items. This provides greater stability when expanded, preventing items from tilting or being squeezed and deformed.
Bottom Sealing: A reinforced heat-sealed bottom design enhances load-bearing capacity.
3. Handle Structure
Rigid Handle: Rigid PE or PP plastic strips are embedded on both sides of the bag opening, providing a comfortable grip and a gentle grip when handling. Heat-pressed to the bag body, it enhances firmness and ensures high load-bearing capacity.
Rigid handles are commonly used on shopping bags in duty-free shops and shopping malls, adding a touch of class and practicality.
4. Closure Structure
Snap Closure: A plastic snap closure is designed at the bag opening, allowing for repeated opening and closing, conveniently storing and protecting items. It effectively prevents items from falling and is suitable for packaging valuable or small items.
Combined with a rigid handle, it creates a crisp and beautiful overall appearance.
5. Process Flow
Film Blowing Process: LDPE granules → melting → film blowing into rolls.
Printing Process: Gravure/Flexographic Printing, supporting logos and custom designs.
Bag Manufacturing Process: Cutting to shape → Heat-sealing gussets on both sides → Bottom edge sealing.
Structural Reinforcement:
Install a rigid handle.
Attach snaps to the closure.
Add cardboard to the bottom or opening for structural support. Finished product inspection and packaging: Strength testing, appearance inspection → packaging and shipment.
Plastic shopping bags with hard handles feature a sturdy overall structure and strong load-bearing capacity, balancing practicality and aesthetics. They are commonly used in duty-free shops, supermarkets, and high-end brand packaging.
