Creaset HWS (alkali high wet strength)

Parameter

Unit

Standard

Tolerance

Substance

g/m²

ISO 536

TAPPI T410

68

70

75

80

± 4%

Thickness

µm

ISO 534

TAPPI T411

58

60

64

68

±4%

Relative humidity

%

TAPPI T502

50

50

50

50

± 7

Whiteness D65/10˚

˚CIE

ISO 11475

96

96

96

96

± 3

Dry Opacity

%

ISO 2471

TAPPI T519

87

88

89

90

- 2

Wet Opacity (20 min)

%

78

79

81

82.5

- 2

Paper gloss

%

TAPPI T480

68

68

68

68

± 5

Smoothness Bekk (coted side)

s

ISO 8254-1

TAPPI T475

1700

1600

1500

1400

˃ 0.8 xstd

Smoothness Bekk

(back side)

s

ISO 5627

TAPPI T475

300

270

270

270

˃ 0.8 xstd

Roughness Parker (coated side)

µm

ISO 5627

TAPPI T555

1

1.1

1.1

1.1

< 1.3

Tensile strength MD

kN/m

DIN 1924-2

TAPPI T494

3.3

3.4

3.9

4.1

- 0.5

Tensile strength CD

kN/m

DIN 1924-2

TAPPI T494

2.7

2.8

3.0

3.3

- 0.5

Wet Tensile strength MD (20 min)

kN/m

ISO 3781

TAPPI T456

0.95

1

1.05

1.1

- 0.2

Wet Tensile strength CD (20 min)

kN/m

ISO 3781

TAPPI T456

0.9

0.95

1.0

1.05

- 0.2

Cobb (coated side)

g/m²

ISO 535

TAPPI T441

20

20

20

20

± 3

Cobb (uncoated side)

g/m²

ISO 535

TAPPI T441

14

14

14

14

± 3

Curl 30% RH

mm

- 10

- 10

- 10

- 10

index

Curl 50% RH

mm

0

0

0

0

1˃x<2

Curl 80% RH

mm

10

10

10

10

Index

Alcaline wash off time

sec.

DIN 16524-6

90

90

90

90

max.

Alcali Resistance

min.

DIN 16524-7

˃30

˃30

˃30

˃30

ref.