In contract leather goods manufacturing, the Tech Pack (Technical Specification Package) serves as the legally binding master blueprint between a buyer brand and the OEM factory. Unlike apparel tech packs where woven fabrics maintain uniform stretch and density, leather tech packs must account for organic hide variances, edge skiving angles, directional fiber pull, and precision hardware tolerances.
At Armaaz Leather Gear, our engineering room in Sialkot reviews hundreds of buyer tech packs every season. Below are the 5 critical technical callouts every production-ready leather tech pack must contain to guarantee accurate pre-production sampling and rapid bulk execution.
1. Precise Hide Gauge & Temper Specifications
Never specify "genuine leather" or generic "cowhide". A factory-ready tech pack specifies hide origin, tannage type, surface finish, and exact thickness in millimeters (mm) or oz gauge:
Internal Card Slots: 0.8mm – 0.9mm Split Sheepskin Nappa (Soft Temper, Skived Edges to 0.4mm)
2. Seam Allowance, Thread Weight & SPI Calibration
Stitching per inch (SPI) controls both aesthetic outline and structural shear strength. For small leather goods (wallets, cardholders), 7–8 SPI using #69 bonded nylon thread is standard. For heavy tool bags or equestrian harness gear, 4–5 SPI using #138 or #207 thread ensures maximum tear resistance.
3. Hardware Alloy & Salt-Spray Corrosion Class
Specify the exact metal composition (Solid Brass, Stainless Steel 304, or Zamak 3 Zinc Alloy) along with the electroplating finish (Satin Nickel, Antique Brass, Matte Black PVD) to prevent hardware tarnishing or rust during ocean container shipping.
4. Lining GSM & Interfacing Reinforcement
Full-grain leather requires internal structural backing (salpa / leatherboard, EVA foam, or woven canvas) to maintain dimensional stability under load. Specify your lining material weight (e.g., 210D Twill Cotton Canvas or 100 GSM Polyester Viscose).
5. Vector Debossing Stamp & Placement Coordinates
Provide branding logo files in vector format (.AI or .EPS). Specify debossing temperature (110°C–130°C), pressure depth (0.5mm), and distance in millimeters from seam margins.
Ready to Submit Your Tech Pack for Factory Evaluation?
Our Sialkot pattern masters and cost engineers will analyze your specifications and provide a sample turnaround schedule.