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Quality

BionPak is ceaselessly putting in efforts for continuous advancement of the quality control system by executing analysis of the products
on the basis of the standards including USP, EP and KP, etc.

Tyvek® fabric specifications and standards

Property Test Method Units Tyvek®1073B Tyvek®Asuron™ Tyvek®1059B Tyvek®2FS™
Specification Properties *
Basis Weight* ASTM D37761
DIN EN ISO 5361
oz/yd2
g/m2
2.20
(74.6)
2.00
(67.8)
1.90
(64.4)
1.76
(59.5)
Delamination* ASTM D27242 lb/in.
(N/2.54 cm)
0.52
(2.3)
0.56
(2.31)
0.50
(2.2)
0.61
(2.7)
Gurley Hill Porosity* TAPPI T460
ISO 5636-5
sec/100 cc 22 22 22 22
Other Properties
Bendtsen Air Permeability ISO 5636-33 mL/min 609 575 638 520
Hydrostatic Head AATCC TM 127
DIN EN 208114
in. H2O
(cm H2O)
59
(150)
61
(155)
56
(142)
57
(145)
Tensile Strength, MD ASTM D50355
DIN EN ISO 1924-25
lb/in.
(N/2.54 cm)
43.4
(193)
38.1
(170)
36.6
(163)
35.1
(156)
Tensile Strength, CD ASTM D50355
DIN EN ISO 1924-25
lb/in.
(N/2.54 cm)
46.8
(208)
44.4
(198)
39.2
(174)
35.3
(157)
Elmendorf Tear, MD ASTM D1424
DIN EN 21974
lb
(N)
0.77
(3425)
0.87
(3872)
0.67
(2980)
0.63
(2.8)
Elmendorf Tear, CD ASTM D1424
DIN EN 21974
lb
(N)
0.79
(3514)
0.99
(4406)
0.72
(3203)
0.83
(3.7)
Mullen Burst ASTM D774
ISO 2758
psi
(kPa)
178
(1227)
153
(1054)
153
(1055)
134
(925)
Thickness ASTM D17776
DIN EN 205347
mils
(μm)
7.3
(185)
7.1
(180)
6.5
(165)
6.11
(155)
Opacity TAPPI T425
ISO 24718
% 92.4 96.9 90.7 94.3
Miscellaneous Properties
Microbial Barrier ASTM F1608 Log Reduction
Value (LRV)
5.2 4.7 4.7 3.2
Elongation, MD ASTM D50355
DIN EN ISO 1924-25
% 22 20 21 23
Elongation, CD ASTM D50355
DIN EN ISO 1924-25
% 26 24 26 28
Thickness Range ASTM D17776
DIN EN 205347
mils (4 sigma)
(μm) (4 sigma)
3.5–11.1
(89–282)
3.2–10.9
(81–277)
2.9–10.1
(74–257)
2.8–9.1
(70–230)
Spencer Puncture ASTM D34209 in-lb/in2
(J/m2)
43
(7488)
41
(7141)
35
(6195)
28
(4900)
* Note: MD = Machine Direction / CMD = Cross Direction.
(* Source : DuPont™)

Tyvek® microbial barrier test results

Per ASTM F1608. Microbial barrier is the measure of the ability of a porous substrate to prevent bacteria penetration. A completely impermeable control sample (microbial penetration is zero) is challenged with one million or 106 colony. forming units (cfu). The number of cfu 106 has a log10 value of 6. If a sample challenged in the same way as the control allows 10 cfu (log 10=1) to penetrate, then its log reduction value (LRV) is 5 (6–1=5). Therefore, the higher the LRV, the more resistant the packaging is to bacteria and microorganisms.

SEM photo of Tyvek® fabric

The unique structure of Tyvek®, which creates a tortuous path with substantial lateral movement, results in superior microbial barrier properties.

  • Top view of Tyvek®
    (200x magnification)
  • Cross-sectional view of Tyvek®
    (500x magnification)
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