An explanation of the various product specifications used by De Ploeg is given below.

Explanation of the technical specifications


De Ploeg fabrics are tested for their flame-retardance according to the standards applicable in various countries: BS 5867 (Great Britain), DIN 4102 (Germany), NF 92 507 (France), ISO 6940 (the Netherlands), ISO 6941 (the Netherlands).


Weight in grams per linear metre.

Light fastness

Discolouration caused by sunlight. The extent of discolouration is expressed in terms of a number between 1 and 8 on the blue scale, where 1 is the lowest discolouration and 8 is the highest discolouration. A discolouration of 6 means in practice that the fabric will show slight discolouration after approximately two years (provided that it is not exposed to direct sunlight). De Ploeg has a lightfastness value of 5 as standard and strives to achieve a lightfastness value of 6.


Shrinkage after washing or dry cleaning is given on the sample material together with the recommended cleaning method.


Resistance to abrasion: the higher the number of Martindale revolutions, the stronger the fabric.
Decorative use < 6,000 revolutions
Normal use > 20,000 revolutions
Intensive use > 30,000 revolutions
Heavy-duty use > 40.000 revolutions

Seam slippage

De Ploeg tests its upholstery fabrics for its sensitivity to the stitching opening up. In general, it can be said that a fabric where the yarn threads can slip a maximum of 6 mm from each other at a maximum load of 180 Nm does not give a problem. If the slippage is less, then it is recommended to pay extra attention when upholstering by using double stitches and serging the edges.


See the washing instructions.


Pilling is the formation of fuzzy balls of fibre on the surface of a fabric. The extent to which a fabric pills depends on the raw materials and the composition of the yarn. The sensitivity to pilling is indicated by a number between 1 and 5, where 1 is heavy pilling and 5 is no pilling.


AC acetate
AF other fibres
CL chlorofibre
CO cotton
EA polyurethane elastomere
LI linen
MD modal
ME metal
PA polyamide
PC acrylic
PE polyester
PL polyethylene
PP polypropylene
SE silk
VI viscose
WM mohair
WO wool
WV fleece wool