A-A-2946 Paper, Tracing

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Table 1

Type	Basis Weight		Cotton Fiber %	Min. Folding Endurance MD:CD avg. each dir.		Min. Folding Endurance after aging³		Min. Tearing Strength MD:CD avg. (grams)	Max. Opacity %³	Max. Opacity % after aging³
Type	17x22-500	g/m²	Cotton Fiber %	MIT	Schopper	MIT	Schopper	Min. Tearing Strength MD:CD avg. (grams)	Max. Opacity %³	Max. Opacity % after aging³
I	7.5-8.5	28-32	100	200	200	100	100	20	55	3
	9.5-11.0	36-41	100	300	300	150	150	28	62	3
	12.5-15.0	47-56	100	400	400	200	200	34	70	3
II	13.3-18.4	50-69	0¹	150	150	75	75	15	28	9
	18.5-23.7	70.89	0¹	200	200	100	100	23	30	9
	23.8-31.7	90-119	0¹	250	250	125	125	28	34	9
	31.8-41.0	120-154	0¹	300	300	150	150	45	38	9
	41.1-50.3	155-189	0¹	350	350	175	175	54	40	9
	>50.4	>190	0¹	400	350	200	175	65	44	9
III	12.5-15.4	47-58	100	300	300	150	150	20	38	5
	15.5-18.4	59-69	100	450	400	225	200	30	47	5
	18.5-22.4	70-84	100	600	500	300	250	40	55	5
IV	12.5-15.4	47-58	100	450	400	225	200	20	47	7
	15.5-18.4	59-69	100	600	500	300	250	30	53	7
	18.5-22.4	70-84	100	750	600	375	300	40	60	7
	22.5-25.5	85-96	100	900	700	450	350	50	63	7
TAPPI	T410		T401	T511	T423	T511	T423	T414	T425	T425

Type II � 95%, min. Bleached chemical wood pulp
Variations between individual readings shall be no more than 4% points.
Use Tappi T544 for aging samples.