GOST 8847-85 PDF

Full title and description

GOST 8847-85 — "Полотна трикотажные. Методы определения разрывных характеристик и растяжимости при нагрузках, меньше разрывных" (Knitted fabrics. Methods for determination of breaking characteristics and extensibility under loads less than breaking loads). The standard specifies test methods and terminology for measuring breaking behaviour and non‑breaking extensibility of knitted fabrics (including special provisions for knitted pile/faux‑fur), and includes apparatus, sample preparation and test procedures.

Abstract

This standard defines laboratory methods to determine: (1) breaking characteristics of knitted fabrics under direct rupture testing, (2) breaking characteristics under ball‑punch (localized) loading, (3) extensibility under loads lower than breaking loads, and (4) residual (irreversible) deformation after load removal. It provides sampling rules, apparatus descriptions, test speeds, specimen dimensions and calculation/recording requirements.

General information

• Status: Active (standard in force; limitation of term withdrawn by State Standards resolution).
• Publication date: Issued 1985 (designation "-85"); came into force 01 January 1987; later amended (Изм. N 1).
• Publisher: State standard of the USSR (Государственный стандарт — developed by the Ministry of Light Industry of the USSR).
• ICS / categories: Textile and leather production. OKS/ICS classification corresponds to knitted fabrics / textiles (OKS/ICS: 59.080.30 / group M49).
• Edition / version: Original GOST 8847-85 (with at least one published amendment).
• Number of pages: 22 pages (standard text length as published in collections).

Scope

Applies to knitted fabrics (polotna trikotazhnyye) intended for outerwear and other knitted products made from all types of yarns and fibres, specifying methods for determination of breaking loads, breaking behaviour under localized (ball) loading, extensibility under sub‑breaking loads and residual deformation. The standard excludes certain specialty constructions (for example: pleated/“plissé” and some elastomer‑core knitted structures for extensibility tests) and contains special provisions for artificial knitted fur.

Key topics and requirements

• Definitions and terminology for knitted fabric mechanical tests (with a normative/applicative appendix for terms).
• Sampling procedures and conditioning of specimens (reference to ГОСТ 8844-75 for sampling rules).
• Procedure for tensile (rupture) tests: specimen size, pre‑load, test speed, fixture requirements and result recording.
• Procedure for ball‑punch (localized) loading tests to measure puncture/press‑through breaking characteristics.
• Methods to measure extensibility under loads less than breaking loads and determination of irreversible (residual) deformation.
• Requirements for apparatus, calibration/measurement accuracy and acceptable test/reporting formats.

Typical use and users

Used by textile testing laboratories, knitted fabric manufacturers, quality control departments of garment and knitwear producers, research institutes and standards bodies to verify mechanical performance of knitted fabrics (durability, elongation under service loads, and resistance to localized puncture). It is referenced in product specifications, procurement documentation and comparative research on knit structures.

Related standards

References and related documents include ГОСТ 8844-75 (sampling and acceptance rules for knitted fabrics), ГОСТ 8845-87 (methods for moisture, mass and surface density), and other textile testing standards. Part of the methods (in particular the method for determination of residual deformation) was later covered/replaced by clause(s) of ГОСТ 28239-89.

Keywords

knitted fabrics; knitted cloth; tensile test; breaking characteristics; extensibility; residual deformation; ball‑punch test; textile testing; ГОСТ; knitted materials.

FAQ

Q: What is this standard?

A: GOST 8847-85 is a Soviet (now interstate) standard specifying laboratory methods to measure breaking characteristics and extensibility of knitted fabrics under loads lower than breaking loads.

Q: What does it cover?

A: It covers sampling references, required apparatus, specimen preparation, test speeds, specific procedures for rupture tests and ball‑punch tests, methods to determine extensibility under service‑level loads and measurement of residual (irreversible) deformation. Some special knitted constructions are excluded or have separate provisions.

Q: Who typically uses it?

A: Textile testing laboratories, knitted fabric and garment manufacturers, R&D and quality assurance teams, standards organizations and procurement/specification authors in the textile sector.

Q: Is it current or superseded?

A: The standard was issued as GOST 8847-85 (in force from 01.01.1987) and remains in standards collections; specific parts (for example methods for residual deformation) were subsequently covered by ГОСТ 28239-89. Restrictions on its term of validity were later removed by a State Standards decision. Users should check national/regional catalogs for the currently adopted/tested version in their jurisdiction.

Q: Is it part of a series?

A: It is part of a family of knitted‑fabric and textile testing standards (series of GOSTs for knitted fabrics and textiles) and is cross‑referenced by other standards on sampling, conditioning and related mechanical tests.

Q: What are the key keywords?

A: Knitted fabrics, tensile test, breaking load, extensibility, residual deformation, ball‑punch, textile testing, ГОСТ 8847-85.