IS 17262:2022 encompasses polyester partially oriented yarn (POY). This standard delineates the specifications for a wide range of polyester POYs intended for diverse applications. The Bureau of Indian Standards endorsed this Indian Standard subsequent to the approval of the draft by the Textile Division Council, as finalized by the Man-Made Fibres, Cotton, and Their Products Sectional Committee. Polyester Partially Oriented Yarn (POY) denotes a continuous filament synthetic polymer exhibiting a notable degree of molecular orientation, with potential for further significant molecular orientation.

CLASSIFICATION OF PARTIALLY ORIENTED YARN

The filament yarn classification must be declared by the manufacturer upon examination under a magnifying microscope, as outlined below:

1. Based on the cross-section, such as circular, triangular, trilobal, angular lobal serrated, profiled oval, ribbon-like.

2. Based on the cross-sectional area, for example, solid, hollow.

3. Based on multi-component fibers, such as concentric cover-core, matrix, sheath-core.

4. Based on Lustre.

• Full Dull(FD)

• Semi Dull(SD)

• Bright(BRT)

• Super Bright(SBR)

• Optically White

5. Based on Dyeing Method (as specified in this standard)

• Cationic Dyeable(CD)

• Dope Dyed(DD)

This standard establishes a standardized notation for yarn construction. Polyester POY is required to adhere to the construction and performance criteria outlined in the standard, with the potential to also meet environmental specifications as specified. The yarn must be devoid of significant flaws, and all tests prescribed by the standard must be conducted in a suitably equipped and staffed laboratory, following the specified protocols.

TESTS

The subsequent test must be conducted for Polyester Partially Oriented Yarn.

• Determination of finish oil pick up

• Determination of interlace of filament yarn

• Determination of moisture content

• Phosphorus content

• Antimony content in polyester

• Titanium dioxide in polymer

The POY should be wound on bobbins containing 8 to 24 kg of yarn per bobbin. All bobbins must be packed in pallets or cartons securely strapped with polypropylene/PET strips, utilizing seaworthy packing materials. Each carton of POY must bear the specified information outlined in this standard. Complying with the stipulations of this standard, the product(s) may qualify for certification under the Bureau of Indian Standards Act, 2016, and its associated regulations, potentially allowing for the product(s) to be marked with the Standard Mark (ISI Mark). Manufacturers must obtain a BIS license from the Bureau of Indian Standards to utilize the standard mark (ISI Mark), with the issuance of such a license contingent upon the successful evaluation of manufacturing infrastructure, quality control, testing capabilities, and production processes.

PROCESS FOR BIS ISI MARK CERTIFICATION