Bag Making Machines Classified by Production Process
11/05
2025
Bag-making machines can be categorized based on different production processes:
1. Hydroentangled: High-pressure micro-water jets are sprayed onto one or multiple layers of fiber webs, causing the fibers to intertwine and reinforce the web, thereby imparting strength.
2. Thermally bonded nonwoven bags: Fibrous or powdered thermoplastic bonding agents are added to the fiber web, which is then heated to melt and cool, solidifying into fabric.
3. Pulp Air-laid Nonwoven Bags: Also known as dust-free paper or dry-process nonwoven fabric. This method employs air-laid technology to disintegrate wood pulp fiber boards into individual fibers. The fibers are then gathered onto a forming screen via airflow and consolidated into a fabric.
4. Wet-laid nonwoven bags: Fiber materials placed in a water medium are disintegrated into individual fibers while simultaneously blending different fiber types to form a fiber suspension pulp. This pulp is conveyed to a web-forming mechanism where fibers form a wet web that is then consolidated into fabric.
5. Spunbond Nonwoven Bags: After polymers are extruded and stretched into continuous filaments, the filaments are laid into a web. The web is then bonded into nonwoven fabric through self-bonding, thermal bonding, chemical bonding, or mechanical reinforcement.
6. Meltblown Nonwoven Bags: The process involves polymer feeding → melt extrusion → fiber formation → fiber cooling → web formation → reinforcement into fabric.
7. Needlepunching: A type of dry nonwoven fabric, needlepunching utilizes the piercing action of needles to reinforce a loose fiber web into a fabric.
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