Product Essence: Uncompromised Sack Integrity

Shanghai Guangzhi Automation’s Model Pinch Bottom Bag Closer delivers industrial-strength sealing for 50-100lb (25-50kg) pinch bottom sacks (PP woven, paper, jute). Engineered for cement, animal feed, and chemical powders, this rugged closer achieves 80 bags/hour with triple-thread lock stitching, eliminating spillage while withstanding harsh plant environments.

Core Technology Advantages

1. Heavy-Duty Stitching Precision

• Triple-Lock Stitch: Class 300 thread (≥35 lb tensile strength)

• Auto Tension Control: Maintains consistent stitch density across materials

• Needle Guard System: Prevents breakage on thick seams (up to 8mm)

2. Dust Containment & Safety

• IP65 Enclosure: Sealed motors/bearings resist abrasive dust ingress

• ATEX Zone 21 Option: Explosion-proof servo drives (Ex IIB T4)

• Vacuum Extraction Port: Captures 95% airborne particulates

3. Material Versatility

4. Ergonomic Operation

• Height-Adjustable Conveyor (800-1200mm)

• Foot Pedal Control (freeing operator’s hands)

• Quick-Release Thread Guides (<30s reload)

Critical Specifications

Stitch Type: Lockstitch (Type 304 SS thread)
Max Bag Width: 600mm
Stitch Length: 5-15mm (adjustable)
Thread Capacity: 5,000m spools
Power: 380V/50Hz, 1.5kW (ATEX: 24VDC)
Dust Emission: ≤3mg/m3 (ISO 14644)
Footprint: 1500×800×1400mm (L×W×H)

Industry-Specific Solutions

Cement & Building Materials

• Tungsten-coated needles for abrasive cement dust

• Anti-static kit (surface resistance <10? Ω)

Food & Feed

• USDA/FDA-compliant food-grade oils

• Washdown-ready SS304 construction

Chemicals

• Corrosion-resistant components (Hastelloy C-22)

• Nitrogen purge option for combustible dusts

Case Study: US Animal Feed Producer

Challenge:

• 50lb paper sacks ruptured at stitch line

• Dust explosions during closing
  Solution:

• ATEX model with reinforced stitching
  Results:
  ? Zero sack failures in 500K+ bags
  ? Compliance with NFPA 652
  ? ROI in 9 months

Global Compliance & Value

Certifications

• CE Machinery Directive

• ATEX 2014/34/EU (Zone 21)

• FDA CFR 21 (food contact)

Cost Advantage

• 50% lower TCO vs EU equivalents

• Modular Upgrades:

• Inkjet batch coding

• Auto bag placer

• Stitch inspection camera

Support Commitment

• 24/7 multilingual troubleshooting

• Critical spares global dispatch ≤72h:

• Needle assemblies

• Tension discs

• Dust filters

• 
  

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

CONTACT US

Skype: fayfaywang1027

QQ: 429682794

Whatsapp: 008618016442021

E-mail: glzoncn@163.com

https://glzon.en.alibaba.com/

cel: +0086 18016442021