Hood Container Corporation produces semi-chem corrugating medium in a variety of basis weights for standard, wet strength, and high performance applications.

Standard Medium

AdobeStock_302781318

Standard Medium

23M / 26M / 30M / 33M / 36M / 40M / 45M

Wet Strength Medium

AdobeStock_302781318

Wet Strength Medium

30MW / 33MW / 36MW / 40MW / 45MW

High Performance Medium

AdobeStock_302781318

High Performance Medium

HP23M / HP33M

Domestic Semi-Chem Medium Specifications - Imperial

Grade Code Characteristic Unit of Measure 23M 26M 30M 33M 36M 40M 45M HP23M HP33M Method
Basis Weight Cond to 7.5% H20 #/1000 ft2 Nom.
Min.		 23
22.1		 26
25.0		 30
28.8		 33
31.7		 36
34.6		 40
38.4		 45
43.2		 33
22.1		 33
31.7		 Tappi T-410
Moisture % Min.
Nom.
Max.		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 7.5
9.5
11.5		 Tappi T-412
Concora lbf Min. 48 54 55 55 60 60 60 48 55 Tappi T-809
Ring Crush CD #/6in Min. 26 29 40 49 60 67 80 30 66 Tappi T-822
Water Drop Penetration sec Max. 10 10 10 10 10 10 10 10 10 Tappi T-831
Wet Tensile * lbf Min. - - 2.8 3.2 3.8 4.8 5.0 - - Tappi T-404
*Wet Strength Grades Available (30MW, 33MW, 36MW, 40MW, 45MW)
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Domestic Semi-Chem Medium Specifications - Metric

Grade Code
Characteristic		 Unit of
Measure		 23M
112gsm		 26M
127gsm		 30M
146gsm		 33M
161gsm		 36M
175gsm		 40M
195gsm		 45M
220gsm		 HP23M
112gsm		 HP33M
161gsm		 Method
Basis Weight Cond to 7.5% H20
Nom.
Min.
GSM
112
107.9
127
122.0
146
140.6
161
154.7
175
168.9
195
187.4
220
210.9
112
107.9
161
154.7
Tappi T-410
Moisture
Min.
Nom.
Max.
%
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
Tappi T-412
Concora
Min.
N(CMT)
214
240
245
245
267
267
267
214
245
Tappi T-809
Ring Crush CD
Min.
kN/m
0.76
0.85
1.17
1.43
1.75
1.96
2.34
0.88
1.93
Tappi T-822
Water Drop Penetration
Max.
sec
10
10
10
10
10
10
10
10
10
Tappi T-831
Wet Tensile *
Min.
kN/m
-
-
0.49
0.56
0.67
0.84
0.88
-
-
Tappi T-404
*Wet Strength Grades Available (30MW, 33MW, 36MW, 40MW, 45MW)
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Export Semi-Chem Medium Specifications - Imperial

Grade Code
Characteristic		 Unit of
Measure		 30ME 33ME 36ME 40ME 45ME Method
Basis Weight Cond to 7.5% H20
#/1000 ft2
Nom.
Min.
30
28.8
33
31.7
36.0
34.6
40
38.4
45
43.2
Tappi T-410
Moisture
%
Min.
Nom.
Max.
7.5
9.5
11.5
7.0
9.0
11.0
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
Tappi T-412
Concora
lbf
Min.
60
70
70
75
62
Tappi T-809
Ring Crush CD
#/6 in
Min.
45
50
60
67
80
Tappi T-822
Water Drop Penetration
sec
Max.
10
10
10
10
10
Tappi T-831
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Export Semi-Chem Medium Specifications - Metric

Grade Code
Characteristic		 Unit of
Measure		 30ME
146gsm		 33ME
161gsm		 36ME
175gsm		 40ME
195gsm		 45ME
220gsm		 Method
Basis Weight Cond to 7.5% H20
GSM
Nom.
Min.
146
140.6
161
154.7
175
168.9
195
187.4
220
210.9
Tappi T-410
Moisture
%
Min.
Nom.
Max.
7.5
9.5
11.5
7.0
9.0
11.0
7.5
9.5
11.5
7.5
9.5
11.5
7.5
9.5
11.5
Tappi T-412
Concora
N(CMT)
Min.
267
311
311
334
276
Tappi T-809
Ring Crush CD
kN/m
Min.
1.31
1.46
1.75
1.96
2.34
Tappi T-822
Water Drop Penetration
sec
Max.
10
10
10
10
10
Tappi T-831
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