Strength of the connecting systems for membranes

Seam strengths in uniaxial tests parallel to the threads 

Determination of an optimum seam width at 23°C for seam widths less than the optimum 

Coating firm, fabric manufacturer At least five in each direction, warp and weft Twenty samples in warp direction, 20 samples in weft direction for both the coating firm and the fabric manufacturer 

The fabric manufacturer now has to prove whether he can achieve the strength which has been reached and proven by the coating firm or whether he has to make concessions. Accordingly he has to establish his seam width 

Determination of seam strength at 23 C at the seam width established by the fabric manufacturer  

---

Determination of the strength of the material Short-term strength behaviour Long-term strength behaviour 5.5 Strength of the connecting systems for membranes... 

---