1.1 Disruption of Visual Aesthetics
The waistline of traditional paper bags is a product of compromise in craftsmanship. The waist less paper bag machine completely eliminates the creases in the middle of the bag body through independent bag opening folding and flat bottom forming technology. This keeps the paper bag flat when folded and stored, and when opened, it looks more like an exquisite packaging box rather than a simple bag, greatly increasing the brand premium.
1.2 Leap in Structural Strength
The waistline free design is not just for looks. The traditional buckle bottom structure concentrates the force point at the adhesive gap when loading heavy objects. The whole flat bottom design of the waistless paper bag makes use of the tensile strength of the paper itself, together with the uniform coating of the hot-melt pressure sensitive adhesive, making the paper bag more stable and not easy to break the bottom when containing heavy objects such as Baijiu and high-end clothing.
1.3 Cost and Compatibility Optimization
Material savings: As there is no need to reserve complex folding margins, the waistline free process can effectively improve paper utilization.
Printing compatibility: Traditional wide paper bags often require expensive non-standard wide printing machines, while waistless equipment supports the "double splicing" production mode, which can directly use paper produced by standard 1050 printing machines, greatly reducing printing costs.
2. Comparison of production process flow
Traditional manufacturing process: automatic feeding → indentation → glue coating → tube forming → bottom folding (producing waistline) → flattening → [manual/semi-automatic threading]
Process flow without waistline: automatic feeding → precise die-cutting → automatic threading/bonding → bag opening folding → integrated flat bottom forming → finished product sorting
The waist less equipment integrates the originally scattered processes into one automated production line, especially the application of automatic rope threading and inner bonding technology, which is the core symbol that distinguishes it from traditional equipment.
3. Industry application suggestions
Traditional equipment: suitable for low-cost, large-scale packaging of fast-moving consumer goods, such as takeaway paper bags, supermarket shopping bags, and other scenarios with low appearance requirements.
Waist free equipment: It is the first choice for packaging high-end gifts, famous wines, luxury goods, and high-end clothing. With the upgrading of consumption, more and more brands are shifting from traditional paper bags to waistless paper bags to enhance the overall texture of their products.
4. Summary
The waistless paper bag machine represents a leap in paper bag manufacturing from "functional containers" to "brand aesthetic carriers". It solves the pain points of traditional equipment in terms of aesthetics, strength, and material utilization through innovative mechanical structures, and is a key tool for packaging enterprises to achieve differentiated competition and high-end transformation
| Model | ZW-A12 |
| Material | White cardboard/ White kraft paper/Gold and silver cardboard(sheet) |
| Material Thickness | 180-300g |
| Production Speed | 45-55pcs/min |
| Bag Width | 200-540mm |
| Bag Gusset | 70-200mm |
| Bag Height | 200-420mm |
| Bag mouth patch thickness | 180-300g |
| Sheet Size(length) | 550-1040mm |
| Sheet Size(width) | 300-770mm |
| Handle Length | 400-600mm |
| Power Supply | 380V |
| Total Power | 40kW |
| Machine Weight | 10000kg |
| Machine Mounting Dimension | 9000(L)×9000(W)×2200(H)mm |
