How to Choose a Double-Screw Automatic Bulk Bagging Machine?

In the purchase of large bags (25-50kg) double spiral automatic quantitative packaging machine, it is necessary to consider material characteristics, packaging accuracy, capacity requirements, equipment durability and other factors. Here are the key shopping guides:

1. Core purchase indicators

Index requirement

Packing range 25-50kg/ bag (10-100kg can be customized)

Weighing accuracy ±0.1%~0.3% (high-precision industries such as chemical industry, food need ≤0.2%)

Packing speed 4-12 bags/min (depending on material flow adjustment)

Applicable materials powder, granular, flake (such as fertilizer, feed, starch, chemical raw materials, etc.)

Spiral type Double helix (anti-bridge, suitable for easy adhesion, poor flow materials)

Material requirements 304 stainless steel (food/pharmaceutical grade) or carbon steel spraying (chemical/wear-resistant requirements)

Automatic (automatic bagging, bag clamping, measuring, sealing) or semi-automatic (manual bagging)

2. Select key configurations

(1) Screw feeding system: double screw design, frequency conversion speed regulation

(2) Weighing system: high-precision sensor, dynamic compensation

(3) Automation function: automatic bag loading (optional), automatic sewing/heat sealing: adapt to different bags (woven bags, PE bags, paper bags), touch screen control

3. Industry application recommendation

Industry recommended configuration

Fertilizer/feed carbon steel material + wear-resistant spiral, packing speed 8-12 bags/min, accuracy ±0.3%

Food/additives 304 stainless steel + dustproof design, accuracy ±0.1%, optional nitrogen fresh-keeping

Chemical/building materials explosion-proof motor + corrosion resistant coating, suitable for high dust environment

In general, suitable models can be selected according to material characteristics, capacity requirements, and budget, with priority given to accuracy, durability, and after-sales service. For specific model recommendations, you can provide:

Material name (e.g. urea, starch, feed, etc.)

Packing specifications (e.g. 40kg/ bag)

Daily output (e.g. 200 tons/day)

Zhengzhou Hanke Machinery provides free trial machine + technical solution customization, welcome to consult!