ISO 8640-2:2004

Overview

ISO 8640-2:2004 - Textile machinery and accessories - Flat warp knitting machines - Part 2: Vocabulary of warp let-off, fabric take-up and batching - defines a standardized vocabulary for components and actions involved in warp let-off, fabric take-up and batching on flat warp knitting machines. This part of the ISO 8640 series provides English and French official terms (with German equivalents published by DIN) and illustrative figures that show working principles of the aggregates without prescribing specific machine arrangements.

Key topics

The standard focuses on terminology and clear definitions for components and functions, including:

• Yarn carriers: terms such as warp, warp beam, sectional warp beam, carrier shaft and pattern beam.
• Yarn braking devices: single-end brakes (tensioners), warp beam brakes and subtypes - constantly acting, controlled (braking torque reduced with decreasing batch diameter), and regulated/self-controlled braking devices.
• Yarn delivery, guiding and tensioning devices: vocabulary for devices that deliver yarn to knitting elements and manage yarn tension.
• Fabric take-up devices: terms describing mechanisms that collect knitted fabric and maintain dimensional control.
• Fabric batching and folding devices: vocabulary for equipment used to batch, fold and prepare finished fabric for downstream handling.
• Illustrative figures that show working principles for aggregates (note: figures are illustrative, not exhaustive of all arrangements).

Practical applications

ISO 8640-2:2004 is useful for:

• Machine manufacturers and designers - to ensure consistent naming and communication when specifying components (warp beams, brakes, take-up units).
• Textile engineers and maintenance teams - for accurate interpretation of manuals, troubleshooting and spare-part identification.
• Procurement and quality departments - to write unambiguous purchase specifications and acceptance criteria.
• Technical authors, educators and trainers - permitted to reproduce terms/definitions in teaching materials under ISO reproduction conditions.
• Standards committees and translators - for harmonized multilingual terminology (English/French official, German equivalents).

Using a consistent vocabulary improves clarity in documentation, design collaboration, supplier communication and regulatory or conformity assessment tasks related to flat warp knitting machines.

Related standards

• ISO 8640-1 - Vocabulary of basic structure and knitting elements
• ISO 8640-3 - Vocabulary of patterning devices
• ISO 8640-4 - Vocabulary of stitch bonding machines and devices

Keywords: ISO 8640-2, flat warp knitting machines, warp let-off vocabulary, fabric take-up, batching devices, yarn carriers, warp beam brake, textile machinery vocabulary, yarn tension.