Apparel Science

Gramax : Textured polyester thread providing softness and comfort

Coats Gramax is a continuous filament textured polyester thread. The textured filaments give the thread a soft feel and make it ideal for use on overlocking and cover seaming machine loopers to provide softness and comfort especially in "next to the skin" seams. It gives high extensibility and seam strength resulting in good seam security and low shrinkage characteristics, which ensures no seam distortion after washing.

Main Uses

Home textiles
Features & Benefits

Coats Gramax provides exceptional seam cover and softness resulting in neat, comfortable seams

High extensibility and seam strength result in good seam security

Low shrinkage property ensures no seam distortion after washing

Coats Gramax offers a high degree of colour fastness providing dependable performance even after the most

demanding of wash processes

Certified to Öko-Tex Standard 100, class 1, the most stringent class covering babywear

Physical and Chemical Properties of Gramax

Thermal Properties
Melts at 250-260 degrees, softens at 220 - 240 °C
Shrinkage less than 1% @ 150 °C

Chemical Properties

Mineral acids :       

Resistant to most mineral acids

Alkalis :                 

Essentially unaffected by weak alkalis, but less resistant to stronger alkalis, especially at higher temperatures

Organic solvents :  

Generally unaffected, but soluble in some phenolic compounds



Insects / Micro-organisms (mildew, rot)   


Laundering / dry cleaning                    


Moisture regain                                  



Coats Gramax Fastness Properties

Washing at 60°C (ISO 105 C10:2006 C(3))                      Grade 4
Water Fastness (ISO 105 E01:2010)                                Grade 4
Rub Fastness (ISO 105 X12:2001)                                  Grade 4
Hypochlorite Fastness (ISO 105 N01:1993)                     Grade 4
Dry Cleaning Fastness (ISO 105 D01:2010)                    Grade 4
Perspiration Fastness (ISO 105 E04:2009)                      Grade 4
Artificial Light Fastness (ISO 105 B02:1994)                    Grade 4


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