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PET/PMMA multilayer film resin

01Overview

The PET/PMMA multilayer film has dichroism properties so that it reflects the light with a particular wavelength and transmits the light with other wavelengths. It is used as Rainbow Film for controlling the visible light zone and as a thermal shield film for controlling the IR area. These films are typically manufactured by SKC (Korea), 3M (USA), and the Rainbow Package Industry (Taiwan).

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02Applications

Rainbow Film is used as a material for interior decorations, packaging, multilayered PVC and paper, the back covers of mobile phones, and fashion materials. In the case of the thermal shield film, it is used for cars, building windows, etc. The film is made of only polymer and has no corrosive metallic elements, making it the highest-grade product with a long life and a high level of performance.

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  • Applications image
03Characteristics

The material properties of the PMMA used for the PET/PMMA multilayer film are suitable for the PET co-extrusion process, and it has superior stretching processability for films than general PMMA.

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PET/PMMA multilayer film resin Properties

Properties

Item

Condition

Unit

Method

IF850

IH830

Optical Properties

Refractive Index

nd

-

ISO 489

1.49

1.49

Light Transmittance

3.2mm

%

ISO 13468-1

92

92

Haze

3.2mm

-

ISO 14782

< 0.5

< 0.5

Thermal Properties

Melt Flow Index

230℃/3.8kg

g/10min

ISO 1133

13

2.3

VICAT Softening Point

B/50

ISO 306

92

109

Heat Deflection Temperature

1.8MPa

ISO 75

82

101

Coefficient of Linear Expansion

-

1/℃

ASTM D696

6×10−5

6×10−5

Mechanical Properties

Charpy Impact Strength

notched

kJ/m²

ISO 179

1.5

1.5

Rockwell Hardness

M scale

-

ISO 2039-2

92

99

Tensile Strength at Break

5mm/min

Mpa

ISO 527

62

7.1

Tensile Strain at Break

5mm/min

%

ISO 527

4

5

Tensile Modulus

1mm/min

GPa

ISO 527

2.8

2.8

Flexural Strength

2mm/min

MPa

ISO 178

101

111

Flexural Modulus

2mm/min

GPa

ISO 178

2.9

3.0

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