Description

HSM-A37 Fully Automatic Pocket Welting Machine: 6th Generation, Stable Mold Pressing & Laser Cutting

The HSM-A37 is a 6th-generation fully automatic pocket welting machine, purpose-built for the pocket welting process — opening welt/besom pockets on jeans, trousers, and similar tailored garments — using upper mold pressing and lower mold wiping technology for a more stable welt seam than conventional methods on the market.

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Why Does Pocket Welting Need a Dedicated Machine?

Pocket welting is one of the most difficult operations in jean/trouser manufacturing, requiring absolute precision when cutting open the fabric and folding the edges simultaneously — even a small misalignment results in a crooked pocket, uneven edges, or torn fabric at the cut point. With manual handling or older-generation machines, the defect rate at this operation is typically much higher than for standard sewing operations.

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Key Technology in the HSM-A37

• Infrared spotlight fabric positioning: helps operators place fabric accurately before the machine processes it.
• High-power 130W laser cutting: a clean, precise cut with less fraying than traditional mechanical cutting.
• Stable mold pressing technology (upper mold pressing, lower mold wiping): folds the pocket edges in two or four directions simultaneously, producing consistent welt seams across every piece.
• Screen-programmed stitch patterns, with storage for up to 999 patterns — extremely useful for factories that frequently switch order styles.
• Intelligent thread breakage sensor: automatically detects thread breaks during operation.
• Pocket lip positioning baffle and middle presser foot: enable accurate fabric placement and a more stable, cleaner stitch line.

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Performance

Technical Specifications

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Full Feature List

• Infrared spotlight fabric positioning for accurate material placement.
• High-power laser pocket opening, clean cut with minimal fraying.
• Folds pocket edges in 2–4 directions simultaneously via stable mold pressing technology.
• Screen-programmed stitching, storing up to 999 patterns — fast style changeovers.
• Intelligent thread breakage sensor, reducing operational defects.
• Pocket lip positioning baffle and middle presser foot for a stable, more attractive stitch line.
• Two-end reinforcement seam, increasing pocket durability.

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Real-World Applications

The machine is built for the pocket welting process on:

• Jeans and trousers with welt/besom pockets.
• Jackets and blazers with welt-style chest or hip pockets.
• Any garment requiring precise, consistent pocket welting at high volume.

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Which Factories Should Invest in the HSM-A37?

• Export-oriented jean and trouser manufacturers with high production volume and a frequently repeated pocket welting operation.
• Factories that regularly change order styles and need a machine capable of storing and switching quickly between multiple pattern programs.
• Manufacturers currently facing a high defect rate at the pocket welting stage due to reliance on manual skill or outdated machines.

📖 This is a textbook example of a Special Purpose Machine (SPM) with a high degree of automation for a single operation — learn more in: “What Is a Special Purpose Machine (SPM)? How It Differs From Standard Industrial Sewing Machines“

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Frequently Asked Questions

Can the HSM-A37 welt pockets of different sizes? Yes. The machine comes in two versions: HSM-A37-22 (length 100–200mm) and HSM-A37-28 (length 100–260mm), both handling pocket widths of 6–40mm, covering most common pocket sizes used on jeans and trousers.

Is it easy to switch production patterns on this machine? Yes. Thanks to screen-programmed stitching and storage for up to 999 patterns, factories can switch quickly between styles without reprogramming from scratch each time.

What’s the advantage of laser cutting over traditional mechanical cutting? High-power (130W) laser cutting produces a cleaner, more precise cut with less fraying at the cut point compared to traditional mechanical cutting — particularly important for fabrics prone to unraveling.

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Contact for Quotation

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