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The PN-EN 13186 standard is a key document for the textile industry, specifying requirements for bedding products filled with feathers and down. In the context of duvet dimensions, this standard introduces very specific rules regarding how the product should be measured and what tolerances are permissible.
Here are the most important principles arising from this standard:
1. Measurement method (lay flat)
According to the standard, the dimensions of the duvet are not measured "in an arc" (along the convexity of the down), but flat.
The duvet should be laid out on a hard, even surface and then smoothed out.
The measurement is taken between opposite edges (outer seams).
Important! - We do not use a metal construction tape for measuring, but a tailor's tape measure.
2. Permissible dimensional tolerance
The standard assumes that natural materials and textiles are flexible, and that down filling provides the product with volume, which can affect the final size. Therefore, PN-EN 13186 specifies the following tolerances:
Length and width +/- 5% of the declared dimensions.
Example in practice:
If you are buying a duvet with a nominal size of 200x220 cm:
The width can vary from 190 cm to 210 cm.
The length can vary from 209 cm to 231 cm.
3. Why does a duvet sometimes seem smaller?
It is worth remembering about the phenomenon of "shortening" of the duvet after filling.
Filling size: Before the cassettes are sewn on and filled with down, the fabric has a nominal size.
The "puff" effect: When a duvet is heavily filled with down, its thickness (height) causes the edges to come closer together.
We proceed similarly when measuring pillows.