Long Arm Two-Needle Sewing Machine for Reverse Filter Bags & Ventiducts

Long Arm Two-Needle Cylinder Bed Compound Feed Lockstitch Sewing Machine

For Sewing Reverse Filter Bags and Ventiducts

Available Models:

• GC2281-1D – 850mm Arm Length with 90mm Cylinder Bed

• GC2281-1F – 1270mm Arm Length with 102mm Cylinder Bed

📌 Overview

Specially engineered for industrial reverse filter bags and ventiducts, this heavy-duty long arm, two-needle cylinder bed sewing machine combines extended reach, rotating cylinder bed design, and compound feed technology to deliver consistent, high-strength seams in demanding industrial fabrics such as PTFE, aramid, and fiberglass fabrics.

✅ Key Features

• Specialized for Reverse Filter Bags and Ventiducts
  Optimized for multi-layer bag bottoms, cylindrical ducts, and structural seams—delivering high-strength and uniform stitch quality.

• Extra-Long Arm Design (850mm / 1270mm)
  Enables easy handling of large-diameter and long bags, offering expanded workspace and operator comfort.

• Two-Needle Lockstitch Configuration
  Produces two parallel seam lines simultaneously for added strength and durability in industrial use.

• Rotating Cylinder Arm for Seam Accessibility
  The rotating cylinder bed allows flexible adjustment of the sewing head angle, making it easy to access circular seams, bag bottoms, and tight corners.

  • Reduces fabric distortion and operator repositioning

  • Ideal for reverse filter bag bottom closing and ventiduct joints

• Compound Feed Mechanism
  Synchronizes needle, presser foot, and feed dog movement to ensure steady fabric feeding, especially on thick or layered materials like PTFE, aramid, or fiberglass felt.

• Sliding Lever Thread Take-Up
  Provides accurate thread tension and prevents skipped stitches on dense fabrics.

• Large Vertical Japanese Rotary Hook
  Fitted with a premium Japanese-made rotary hook, ensuring smooth thread delivery, reduced wear, and long-term reliability—especially with high-tension industrial threads.

• Cog Belt Drive System
  Synchronizes arm and hook shafts to reduce vibration and maintain stitch consistency.

• Lever-Type Stitch Regulator
  Allows precise stitch length adjustments to meet different production needs.

• High Presser Foot Lift
  Facilitates feeding of bulky materials, suitable for multi-layer bag structures.

• Long Stitch Length Capability
  Increases production efficiency while ensuring strong structural seams.

⚙️ Advanced Automation Features

• Energy-Efficient Servo Motor
  Offers quiet operation, precise speed control, and reduced power consumption.

• Auto Needle Positioning
  Automatically positions the needle at the end of each seam for consistent results.

• Auto Backtracking
  Reinforces seam start and end points automatically for added durability.

• Auto Presser Foot Lift
  Enhances workflow by lifting the presser foot automatically after each seam, reducing operator fatigue.

Available Models & Technical Specifications

🔍 Why Choose This Machine?

• Industrial-Grade Durability
  Cast iron frame and reinforced mechanical parts ensure long-term operation under heavy workloads.

• Premium Japanese Components
  Equipped with Japanese-made rotary hook, ensuring high-speed stability, long lifespan, and exceptional stitch performance even on thick and dense filter materials.

• Precision Engineering for Filter Bags
  Unlike general-purpose lockstitch machines, this model is optimized for the bottom-closing structure and tubular shapes of reverse filter bags and ventiducts.

• Rotating Arm Increases Accessibility
  Minimizes repositioning and improves ergonomics, particularly for bag bottoms and circular closures.

• Supports Multi-Shift High-Volume Production
  Stable speed, consistent stitch quality, and low maintenance requirements make it ideal for industrial use.