Screw Feed Net Packer is a high accuracy bagging machine for filling powder products like chemicals, lime, pigments, flour in open-mouth bags.This packing machine include powder hopper, discharging ap
High-Speed, Gentle Handling for Granular & Fragile Materials
Shanghai Guangzhi Automation’s GZ-GB/B Series combines precision gross-weight bagging with advanced belt feeding technology, achieving ±0.5% filling accuracy at 30–40 bags/hour for grains, pellets, flakes, and fragile products. Engineered with heavy-duty construction and PLC-controlled dosing, this system reduces labor costs by 80% while minimizing product degradation – ideal for agriculture, pet food, and chemical industries.
Gentle Belt Feeding System
Variable-speed conveyor belt (0.1–3 m/min) with cleated design prevents rollback
Product Preservation: Low-impact handling for fragile items (e.g., cereal flakes, polymer pellets)
Intelligent Gross Weighing
500kg load cells with ±0.5% accuracy + automatic tare compensation
Overfill prevention via real-time feedback control
Dust Containment
Telescopic filling spout with inflatable collar (IP65 sealing)
Integrated dust vent port (connects to extraction systems)
Semi-Automatic Operation
Operator positions bag → machine auto-fills/seals
Foot pedal control for hands-free cycling
Industrial-Grade Build
4mm carbon steel frame (1,200 kg capacity)
Abrasion-resistant belt (PU/PVC options)
| Parameter | Standard Model | High-Capacity Option |
|---|---|---|
| Bag Capacity | 10–50 kg | 25–100 kg |
| Throughput | 30 bags/hour | 40 bags/hour |
| Accuracy | ±0.5% (gross weight) | ±0.3% |
| Belt Width | 300–600 mm | 400–800 mm |
| Material Compatibility | Grains, pellets, flakes, granules (0.5–50mm) | |
| Power Supply | 380V/50Hz, 3.2 kW + 0.6 MPa air | |
| Bag Types | Woven PP, Paper, Jumbo Bags | |
| Machine Dimensions | 2,500 × 1,500 × 3,000 mm | |
| Compliance | CE, ATEX Zone 22, OIML R61 |
| Industry | Typical Materials | Special Features |
|---|---|---|
| Agriculture | Animal feed, grains | Anti-microbial belt (USDA) |
| Chemicals | Plastic pellets, fertilizers | ATEX explosion-proofing |
| Food Processing | Cereals, sugar, snacks | Food-grade stainless steel |
| Recycling | Plastic flakes, rubber crumb | Heavy-duty impact beds |
Bag Placement: Operator hangs open-mouth bag on spout
Clamping: Pneumatic seal engages (dust-tight)
Belt Feeding: Material gently conveyed into bag
Weighing: Real-time load cell monitoring
Release: Auto drop onto conveyor after target weight
| Metric | Belt Feeder | Screw Feeder |
|---|---|---|
| Product Damage | <0.1% breakage | 2–5% breakage |
| Throughput | 40 bags/hour | 25 bags/hour |
| Energy Use | 30% lower | Higher power consumption |
| Maintenance | Belt replacement in 15 mins | Screw dismantling required |
| Material Versatility | Handles flakes/fibers | Limited to free-flowing |
Belt Upgrades:
Chevron belts for steep inclines
Magnetic belts for ferrous contamination
Automation Packages:
Robotic bag placers
|Checkweigher + reject system
Hazardous Environments:
ATEX Zone 21/22 compliance
Static-dissipative belts
Sanitary Configurations:
CIP-ready with polished surfaces
APPLICABLE BARREL TYPE
COMPANY PROFILE
Shanghai Guangzhi Automation Equipment Co., Ltd. is a production and trading company specializing in the weighing industry. We are located in Shanghai, China's economic city, with convenient transportation and export ports all over the world. We cooperate with state-owned factories and international companies, and the quality is guaranteed.
We mainly focus on providing customers with weighing solutions, from commercial scales to industrial weighing machines. Such as pneumatic valve bag packaging machine, dry mix mortar bag packaging machine, cement packaging machine, natural stone powder packaging machine, flour powder packaging machine, wheat packaging machine, potato starch packaging machine, air packaging machine, granule bag packaging machine, grain packaging machine, fertilizer bag packaging machine, lubricant filling machine, 200 kg drum filling machine, 216L drum filling machine, 208L drum filling machine, ton barrel filling machine, IBC barrel filling machine, jumbo bag packaging machine, ton bag packaging machine, 30L pail filling machine, 50L pail asphalt filling machine, ATEX barrel filling machine, explosion-proof filling machine, etc.
Company Certificate
Our office and workshop
Consulting-Design-Procurement-Processing-Production-Installation-Debugging-Training-Maintenance
This is a partial 
service for us
in China.
Over 30 years of experience, every time we produce in
Shanghai, our friends can visit our factory at any time.
Brand components
We will ensure that our company's equipment has safety, stability, high efficiency and intelli-gent technology, so as to meet your needs, we can also cooperate with you in selecting in-ternational product brand production and business.
Our service
Complete solution provided
Telephone exchange joint business design plan, you can also visit our company ; we have a good environmental office vehicle,you can visit from time to time.
Duty after death
Our music team has a strong heart, and the customer's suspicions are also the purpose 24 hours of phone cell service and listing to the conversation at any time.
Technology group
We have a wealth of technical personnel and our technical team has been developing technical skills for over ten years.
Successful collaboration
Our factory in Shanghai. China provides free training for our technical staff.Better guarantee good product safety , our company provides safety, convenience, high efficlency packaging servic.
packge and delivery
Multiple Transportation way :Express(Fedex/DHL/TNT/EMS/UPS etc),air and shipping for your choose
FAQs
Our in-house designers and engineers have produced countless great designs for customers from different industries
CONTACT US
Skype: fayfaywang1027
QQ: 429682794
Whatsapp: 008618016442021
E-mail: glzoncn@163.com
https://glzon.en.alibaba.com/
cel: +0086 18016442021
