XST-235-7H1 Leather Seam Opening Machine with Steam-Free Pressing

Product Overview

Seam opening is the step where a leather garment is either made or marked. The seam allowance is split to both sides and pressed flat, and everything downstream — the fall of a front panel, the line of a shoulder, the way a jacket hangs — is decided at that table. It is also the step with the least room for error, because leather does not recover from a wet mark or a pressed shine the way a woven shell does. A leather seam opening machine therefore has to solve two problems at once: getting the allowance open evenly, and getting it flat without putting anything into the hide.
The XST-235-7H1 is built for that one operation. It splits the seam allowance and presses it flat in a single continuous pass, and it does so dry: no steam generator, no water feed, nothing that condenses into the hide while the seam is being set. The risk this removes is the one specific to leather — surface deformation and color change from moisture meeting a heated surface.
The machine runs at 100 mm/s, adjustable to the pace of the line, across a 5-20 mm working width, with a continuous stroke rather than an intermittent one. Two 100 W servo motors drive the feed, air supply is 0.6-0.7 MPa, and total power is 280 W on AC 220 V ±10%, 50/60 Hz.

Technical Specifications

Processing Workflow

Seam opening on this unit is one pass rather than a sequence of hand operations.

What the leather seam opening machine does in one pass

1. Feed. The joined seam enters the working area with the allowance inside the 5-20 mm width. Speed is set at 100 mm/s and can be adjusted to match the operator and the thickness of the hide.
2. Split. The machine opens the allowance to both sides of the seam line, which is the step that is slowest and least even when it is done by hand on a padded table.
3. Press. The head closes on the opened seam and holds the temperature set for that leather while the stroke runs. Because the stroke is continuous, the seam is not released and re-gripped between pieces.
4. Exit. The seam leaves flat and dry, with no moisture on the surface and nothing left to evaporate afterwards.

The whole operation takes one pass of the head. There is no separate pressing step, no steam cycle and no cooling period before the piece can be handled.

Application Scope & Selection Tip

The unit is built for leather garment production, where seam opening sits between joining and final assembly. Garments in this category include leather jackets, coats and other leather apparel where the seam allowance has to be opened and flattened without marking the surface.
Temperature is controlled closely enough to run across several types of material rather than one, so a workshop that handles different leathers can adjust the setting per run instead of reserving a machine per material.
Three checks are worth making before an order. Confirm that the seam allowances in production fall inside the 5-20 mm working width. Confirm that the point of use can supply 0.6-0.7 MPa of compressed air as well as AC 220 V ±10%, 50/60 Hz. Then agree the temperature for each leather in advance, since the head holds one setting through a run.

Business Benefits For Garment Factories

• Surface damage removed at the source. Deformation and color change on leather come from moisture meeting heat. Working dry keeps water out of the operation entirely, so the marking risk is not managed after the fact but never introduced.
• Training cost drops sharply. The manufacturer puts the learning curve at about 3 minutes before an operator can run the machine, which matters in a workshop where the pressing table is usually staffed by the most experienced hands.
• Throughput follows the machine, not the operator. A continuous stroke at 100 mm/s with servo-driven feed replaces the hand rhythm of opening and pressing piece by piece, so output is set by the speed setting rather than by how long an operator has been on shift.
• Consistency across a run. Closing tolerance on the temperature control lets the same setting hold for a whole batch, which is what keeps seam appearance even from the first jacket to the last.
• Low power draw. Total power is 280 W on a standard 220 V supply, and the manufacturer lists energy saving among the machine's design aims, with no boiler or steam generation to feed.

Limitations & Constraints

• Built for leather. The machine is designed around leather seam opening. Running it as a general-purpose press for other operations is outside its intended use.
• Width limit. Working width is 5-20 mm. Seam allowances outside that band are not covered by this head.
• Compressed air required. The site has to supply 0.6-0.7 MPa of air; this is not a machine that runs on mains power alone.
• One setting per run. Temperature is held for the material being run, so a batch that mixes leathers needs the setting changed between them.

FAQs

Why can leather seam opening not be done with steam?

Steam puts water into the hide at the same moment heat is applied, and on leather that combination shows up as surface deformation and color change. The XST-235-7H1 uses a heated head with no steam generator and no water feed, so the seam is set without moisture being introduced.

What seam widths can the machine open and press?

The working width is 5-20 mm, which covers the allowances used in leather jackets and coats. Width is the first thing to check against in-house patterns, since the head cannot be run outside that band.

What does the machine need on site?

AC 220 V ±10%, 50/60 Hz for power and 0.6-0.7 MPa of compressed air. Total power draw is 280 W. There is no steam supply, boiler or water connection involved in the installation.

How long does it take an operator to become productive?

The manufacturer states about 3 minutes to get started, which is the reason training cost is listed as a benefit of the design. The operator feeds the seam and sets the speed and temperature; the splitting and pressing are carried out by the machine.