Clay content (%)

Duration of flammability

(seconds)

Average length destroyed (mm)

Formation

of tastes

Classification

Non thermoformed

0

total combustion of the samples with flame

≥350

No

M3

5

65.93

25

No

M2

10

27.2

21.33

No

15

15.4

14

No

Thermoformed

0

total combustion of the samples with flame

33

No

M3

5

65.12

33

No

M2

10

21.57

19.66

No

15

11.03

18

No