BS-EN-13561 Interpretation of certification standards for outdoor shading industry

BS-EN-13561 2004 is a certification Standard for the outdoor shading industry developed by the British Standard Institute (BSI), which is common in the European Union and has a very high degree of recognition worldwide.

The following is the original text of the fabric part and some simple interpretations:

Fabric

15.2.1 General

With reference to the initial state,  performances shall be estimated after 1000 h exposure to weathering agents according to EN ISO 105-B04.

This is a general rule, and all the following tests are based on this standard, that is, according to EN-ISO-105-B04, the fabric is exposed for 1000 hours, and the following sub-items are tested respectively before and after the sample performance data, and compared to draw a conclusion.

15.2.2 Colour fastness

The grey scale according to EN 20105-A02 shall be at least at level 4.

This part is about color fastness, which requires to reach level 4. The test standard is EN-20105-A02, customized by the German Institute of Standardization. There are 5 levels of color fastness, of which 1 is the lowest and 5 is the highest.

15.2.3 Tensile resistance

-The minimale tensile resistance carried out according to EN ISO 1421 (on strip of 5 cm wide) shall be:

-warp     100 daN

-weft      60 daN

-The reduction of resistance shall not be more than 20 % relative to the initial state.

This part is about tensile test. It requires warp direction >=1000N (1daN=10N) and weft direction >=600N. The test standard is EN-ISO-1421 and the sample length is 5cm (2 inches).

At the same time, according to the test of 15.2.1, after 1000 hours of exposure, the tensile force performance should not be reduced by more than 20% compared with the initial condition

15.2.4 Dimensional stability

-Stability under weathering agents : dimensional variations shall be between the following limits:

-warp [-3 % , +1 %]

-weft : [-1 % , +1 %]

- Residual deformations after traction application :  dimensional variations measured after 24 h loading 250 N on 100 mm, on sample 100 mm x 1 200 mm,  warp way and weft according to annex A. shall be within the following limits:

-Total change in length under load:

-warp < 12 mm

-weft < 41 mm

-Residual length, load released:

-warp < 1 mm

-weft < 16 mm

-Residual width, load released:

-warp 0 mm

-weft 0 mm

This part is the test of morphological stability. First, according to the test in 15.2.1, the change of longitude and latitude should not exceed the standard requirements; The second is to take a sample of 100mm*1200mm, withstand 250N pressure, after 24 hours, the change of longitude and latitude can not exceed the standard requirements.

15.2.5 Resistance to water penetration:

Resistance to water penetration (Schopper test) shall be measured according to EN 20811. Stitches are not concerned.

A new measurement is taken after simulation of effect of repeated showers.

The sample is immersed during 24 h in demineralized water, changed completely every 3 h.

The reduction of the resistance to water penetration shall not be more than 15 %.

This part of the waterproof performance, according to the EN-20811 standard spray test, which does not require the joint part.

After the previous experiment, the sample was immersed in demineralized water for 24 hours, and the water was replaced every 3 hours. Compared with the initial state, the waterproof performance should not be reduced by more than 15%