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 25M 26M 30M 33M 36M 40M 45M Method
Basis Weight Cond to 7.5% H20 #/1000 ft2 Nom
Min		 23
22.1		 25
24.5		 26
25.0		 30
28.8		 33
31.7		 36
34.6		 40
38.4		 45
43.2		 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		 Tappi T-412
Concora lbf Min 48 48 54 55 55 60 60 60 Tappi T-809
Ring Crush CD #/6 in Min 26 34 29 40 49 60 67 80 Tappi T-822
Water Drop Penetration sec Max 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: 30MW, 33MW, 36MW, 40MW, 45MW
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Domestic Semi-Chem Medium Specifications - Metric

Grade Code
Characteristic		 Unit of
Measure		 23M
112gsm		 25M
122gsm		 26M
127gsm		 30M
146gsm		 33M
161gsm		 36M
175gsm		 40M
195gsm		 45M
220gsm		 Method
Basis Weight Cond to 7.5% H20
GSM
Nom
Min
112
107.9
122
119.6
127
122.0
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
7.5
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
N(CMT)
Min
214
214
240
245
245
267
267
267
Tappi T-809
Ring Crush CD
kN/m
Min
0.76
0.99
0.85
1.17
1.43
1.75
1.96
2.34
Tappi T-822
Water Drop Penetration
sec
Max
10
10
10
10
10
10
10
10
Tappi T-831
Wet Tensile *
kN/m
Min
-
-
-
0.49
0.56
0.67
0.84
0.88
Tappi T-404
 * Wet Strength Grades: 30MW, 33MW, 36MW, 40MW, 45MW
 Download Chart

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
 Download Chart

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
 Download Chart