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The processing procedures for waste woven bag pelletizing machines are becoming increasingly simple.

Time：

2017-07-07

The pellets produced by waste woven‑bag granulators can maximize their utility: for example, recycled pellets from used cement‑woven bags can be directly spun into filament and wound onto spools, then fed to circular knitting machines to be re‑woven into new bags; recycled pellets from used agricultural mulch films and convenience‑store bags can be processed on blow‑molding machines to produce roll‑stock film, which Chinese manufacturers of bag‑making machines can then convert into new convenience bags. Meanwhile, recycled plastic basins, buckets, and appliance housings, after being granulated, can be supplied directly for further processing. The evolution of waste‑woven‑bag recycling granulators has progressed through several distinct stages: primitive processing, conventional machinery, and advanced equipment. In the earliest phase, recycling was carried out using a simple method of melting and condensing waste plastics in open‑flame kettles, primarily to reduce the volume of discarded plastic.

The pellets produced by waste woven‑bag granulators can maximize their utility: for example, recycled pellets made from used cement‑woven bags can be directly used as filament for winding and then fed into circular knitting machines to be re‑woven into bags; while recycled pellets derived from used agricultural mulch films and convenience bags can be processed on blow‑molding machines to produce rolled films, among other applications.

Woven polypropylene bags are supplied to bag-making machines for remanufacturing into convenience bags. Meanwhile, used plastic basins and buckets, as well as recovered appliance casings, can be directly fed into the recycling process after pelletizing.

The waste woven-bag recycling pelletizing machine has gone through several typical stages: primitive processing, conventional machinery, and advanced equipment.

The original method of recycling waste plastics relied on a simple process of melting and condensing in a fire‑heated pot to reduce the material’s volume, producing crude, block‑shaped recycled feedstock. Because no sorting, cleaning, or filtration was performed, the material’s value was significantly diminished. The resulting recycled resin could only be used for basic, low‑grade applications.

Raw products such as cement buckets, manure buckets, and packaging crate bottoms, among others, to a certain extent result in the wastage of substantial recycled resources.

Traditional recycling pelletizing machines for used woven bags generally offer basic plasticizing and extrusion capabilities. However, these devices are often non-standard, constructed from ordinary materials, with simple screw designs and structures, low length-to-diameter ratios, poor dehydration and venting functions, and an inability to achieve precise automatic temperature control. They still rely on coal or gas heating, generating significant…

In terms of secondary pollution, a conventional recycling system is designed to process only a single type of material, failing to deliver multi‑material versatility. Moreover, the resulting pellets exhibit inconsistent texture and color, thereby preventing the full realization of the value inherent in recycled waste plastics.

With advances in technology and the development of the machinery industry, the new type of recycled pelletizing machine for waste woven bags features automation, precision, high productivity, energy efficiency, multi‑functionality, and the ability to process both dry and wet materials. It also meets the stringent requirements for continuous operation under high temperature and high pressure.

Introduction to the features of woven-bag plastic pelletizing machines:

1. This unit can process cleaned and shredded recycled nonwoven fabrics and woven bags, converting them into plastic pellets that serve as feedstock for subsequent molding operations.

2. The extruder gearbox of this unit employs a hardened‑tooth‑surface reducer.

3. Both the screw and the barrel are made of 38CrMoAlA alloy steel and undergo nitriding treatment, ensuring a long service life.

4. This unit consists of a main extruder, an auxiliary extruder, a water tank, and an alloy rotary‑blade pelletizer. A drying blower can also be supplied upon request.

5. From raw material crushing, cleaning, and feeding to pelletizing, the entire process is fully automated.

6. Fully utilizes a high-pressure friction continuous heating system to enable automated production, eliminating the need for batch heating and thereby saving energy.