HALS Sheet - Quality Standards and Precautions

Quality Standards

Feature   HALS-PP Testing Method
250 300 400 500
Thickness Range mm 0.26
±0.02
0.31
±0.02
0.41
±0.03
0.51
±0.04
Micrometer
Dimensions Longitudinal mm From 0 to +2.0 or less From 0 to +2.0 or less From 0 to +2.0 or less From 0 to +2.0 or less Direct measurement (±0.5)
Transversal From 0 to +2.0 or less From 0 to +2.0 or less From 0 to +2.0 or less From 0 to +2.0 or less Direct measurement (±0.5)
Lens Lens pitch mm 0.12 0.12 0.18 0.18 Microscopic observation
Lens focal distance mm 0.26±0.02 0.31±0.02 0.41±0.02 0.51±0.02 In-house measuring method
Lens array   Honeycomb array on to a screen with screen angle at 60° Directly on to a screen with screen angle at 45° In-house measuring method
Lens form quality   Microscopic observation at 5
Within one sheet, on average 10% or less non-standard lenses (*1) exist. However, this has no effect
on the perceived 3D effect.
Microscopic observation at 5 locations per sheet
External appearance Stains, scratches, damage   None Visual observation
Curling   5.0 mm or less for the standard size (720 x 508) Flat measurement
Burrs from cutting   No scratches are caused when sheets are rubbed together horizontally. Visual observation
Packaging   100 sheets wrapped in paper / Skid packaging for 1000 sheets or more is possible  


Feature   HALS-PETG Testing Method
400 500
Thickness Range mm 0.41 ±0.03 0.51 ±0.04 Micrometer
Dimensions Longitudinal mm From 0 to +2.0 or less From 0 to +2.0 or less Direct measurement (±0.5)
Transversal From 0 to +2.0 or less From 0 to +2.0 or less Direct measurement (±0.5)
Lens Lens pitch mm 0.18 0.18 Microscopic observation
Lens focal distance mm 0.41±0.02 0.51±0.02 In-house measuring method
Lens array   Directly on to a screen with screen angle at 45° In-house measuring method
Lens form quality   Microscopic observation at 5
Within one sheet, on average 10% or less non-standard lenses (*1) exist. However, this has no effect
on the perceived 3D effect.
Microscopic observation at 5 locations per sheet
External appearance Stains, scratches, damage   None Visual observation
Curling   5.0 mm or less for the standard size (720 x 508) Flat measurement
Burrs from cutting   No scratches are caused when sheets are rubbed together horizontally. Visual observation
Packaging   100 sheets wrapped in paper / Skid packaging for 1000 sheets or more is possible  

*1): Non-standard indicates that lens have joined (bridging), or that lenses are partially deficient.

Precautions for handling

1. Temperature
  Sheets may change shape when heated to 70°C or over for HALS-PP, or 50°C or over for HALS-PETG.
Accordingly, please avoid storing the product in locations where atmospheric temperatures rise above 40°C.
2. Solvents
  Paints and solvents can cause HALS to change shape by eroding its surface,
so please avoid storing in locations such as storage rooms for painting materials, spraying rooms or were solvent fumes may infiltrate.
3. Storage
  Please store HALS horizontally, stacking items only of similar dimensions above it.
4. Disposal
  When disposing of this product, please do so in accordance with the law, and conditions stipulated by regional governing bodies.
5. Period of storage
  The maximum storage period for HALS in environmental conditions tested at 23°C after shipping is: 3 months for the PP material, and 6 months for the
PET material.

Physical Properties Chart

Tested Property Unit HALS PP Testing Method Details
250 300 400 500
Thickness mm   0.26 ±0.02 0.31 ±0.02 0.41 ±0.02 0.51 ±0.02 1/1000 micrometers
Room temperature yield strength MPa
(kg/cm2)
Longitudinal 37.3 39 36 37 Compliant with JISK-7113 The stress (strength) recorded at yield point, defined as the point when the material begins to stretch (pressure applied until compositional breakdown) during a tensile test at room temperature.
Transversal 34.5 35 34 33
Young's modulus MPa
(kg/cm2)
Longitudinal 1690 1590 1560 1660 Compliant with JISK-7113 A tensile test is conducted and the Young modulus (modulus of elasticity: a constant used to decide the degree of distortion, identical to pressure). The higher the value, the harder the material.
Transversal 1500 1440 1400 1450
Degree of tensile elongation % Longitudinal 580 600 450 485 Compliant with JISK-7113 A value indicating the percentage change in length through distortion (stretching) at the point where the material breaks (called the breaking point) during a tensile test.
Transversal 530 600 400 405
Ratio of expansion and contraction with heat (%) 80°C Longitudinal 0 -0.3 -0.4 0 Compliant with JISK-7133

The ratio of expansion and contraction (dimensional change) is measured at various temperatures.
(Inside gear oven for 10 min)

Transversal 0.1 -0.2 -0.1 0
100°C Longitudinal -0.2 -0.5 -0.7 -0.1
Transversal 0 -0.3 -0.4 0.2
130°C Longitudinal -0.7 -1.0 -1.0  
Transversal -0.4 -0.6 -0.6  
Water resistance 2 2 2 2 *Dropping test

Liquid (water) is dropped on to a sheet for 12 hours, and its appearance is then evaluated after the liquid has been wiped off.

1: No change at all
2: Wrinkles appear in lens printing (slight change occurs)
3: The lens effect disappears (change occurs)
4: Changes such as swelling in the sheet occur (large change occurs)

Ethanol resistance (95%) 2 2 2 2
NaOH resistance (2%) 2 2 2 2
HCl resistance (2%)
2 2 2 2
Dupont impact strength (23°) 1.0 0.9 0.8 0.9 In-house method 1/2 Impact point 300 g load Energy at 50% breakdown



Tested Property Unit HALS PET-G Testing Method Details
400 500
Thickness mm   0.41 ±0.04 0.51 ±0.04 1/1000 micrometers
Room temperature yield strength MPa
(kg/cm2)
Longitudinal 61 59 Compliant with JISK-7113 The stress (strength) recorded at yield point, defined as the point when the material begins to stretch (pressure applied until compositional breakdown) during a tensile test at room temperature.
Transversal 62 59
Young's modulus MPa
(kg/cm2)
Longitudinal 1850 1590 Compliant with JISK-7113 A tensile test is conducted and the Young modulus (modulus of elasticity: a constant used to decide the degree of distortion, identical to pressure). The higher the value, the harder the material.
Transversal 1850 1620
Degree of tensile elongation % Longitudinal 245 260 Compliant with JISK-7113 A value indicating the percentage change in length through distortion (stretching) at the point where the material breaks (called the breaking point) during a tensile test.
Transversal 285 330
Ratio of expansion and contraction with heat (%) 60°C Longitudinal 0 0 Compliant with JISK-6734

The ratio of expansion and contraction (dimensional change) is measured at various temperatures.
(Inside gear oven for 10 min)

Transversal 0 0
80°C Longitudinal -1.1 -1.9
Transversal 0.8 -0.3
100°C Longitudinal -3.2 -3.4
Transversal -1.2 -1.1
Water resistance 2 2 *Dropping test

Liquid (water) is dropped on to a sheet for 12 hours, and its appearance is then evaluated after the liquid has been wiped off.

1: No change at all
2: Wrinkles appear in lens printing (slight change occurs)
3: The lens effect disappears (change occurs)
4: Changes such as swelling in the sheet occur (large change occurs)

Ethanol resistance (95%) 2 2
NaOH resistance (2%) 2 2
HCl resistance (2%)
2 2
Dupont impact strength (23°) 5.2 or higher 5.2 or higher In-house method 1/2 Impact point 300 g load Energy at 50% breakdown
1) The values indicated above are measured values, and are not guaranteed values.

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