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Mayer Bar Coating Method

Mayer Bar Coating Method

What's the mayer bar coating method ?

Mayer bar(also call metering rob,meyer bar) is one of the most popular coating methods. It is a stainless steel rod ,which is coiled with stainless steel wire. An this rod is used to get rid of redundant coating adhesives ,so that control the coating weigh. Furthermore,The wet thickness after doctoring is adjusted by the wire which wind the roll. Rods are available in a wide variety of wire sizes to give a range of coating weights. The dry thickness is determined by the solids rate of the coating adhesives,working speed etc.

Mayer Bar Coating Range for substrate and adhesives

Coating thickness: wet 30μ or less
Viscosity: 1000mPa.S or less

meter rod

Mayer bar Coating weight ( Dry per Square Meter)

 

Rod Size

Wet
Mils

Thickness Microns

30%
Solids

40%
Solids

75%
Solids

100%
Solids

#3
#4
#5
#6
#7
#8
#9
#10
#11
#12
#13
#14
#15
#16
#17
#18
#19
#20
#22
#24
#26
#28
#30
#32
#34
#36

.3
.4
.5
.6
.7
.8
.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.2
2.4
2.6
2.8
3.0
3.2
3.4
3.6

7.6
10.2
12.7
15.2
17.8
20.3
22.9
25.4
27.9
30.5
33.0
35.6
38.1
40.6
43.2
45.7
48.3
50.8
55.9
61.0
66.0
71.1
76.2
81.3
86.4
91.4

2.18
2.91
3.64
4.38
5.09
5.82
6.56
7.28
8.00
8.74
9.47
10.20
10.93
11.65
12.38
13.11
13.85
14.58
16.03
17.49
18.94
20.40
21.85
23.31
24.76
26.23

2.91
3.88
4.85
5.82
6.80
7.78
8.34
9.71
10.69
11.65
12.63
13.60
14.58
15.54
16.51
17.49
18.45
19.43
21.36
23.31
25.25
27.20
29.14
31.09
33.04
34.96

5.47
6.83
9.11
10.93
12.74
14.58
16.40
18.21
20.04
21.87
23.71
25.51
27.32
29.14
30.99
32.78
34.61
36.41
40.07
43.72
47.38
51.04
54.65
58.28
61.62
65.55

7.29
9.11
12.14
14.58
16.99
19.43
21.87
24.28
26.72
29.16
31.60
34.00
36.41
38.85
41.29
43.70
46.14
48.55
53.43
58.28
63.16
68.04
72.86
77.72
82.55
87.40

Which tapes are suitable to be coated by mayer bar?

bopp packing tape

For instance,BOPP Tape.We recommend GS01 BOPP Tape coating machine with high working speed