ISO 15106-7:2015

INTERNATIONAL ISO
STANDARD 15106-7
First edition
2015-04-15
Plastics — Film and sheeting —
Determination of water vapour
transmission rate —
Part 7:
Calcium corrosion method
Plastiques — Film et feuille — Détermination du coefficient de
transmission de vapeur d’eau —
Partie 7: Méthode de la corrosion du calcium
Reference number
ISO 15106-7:2015(E)
©
ISO 2015

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ISO 15106-7:2015(E)

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ii © ISO 2015 – All rights reserved

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ISO 15106-7:2015(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Terms and definitions . 1
3 Principle . 1
4 Test specimens. 1
5 Conditioning . 2
6 Apparatus, procedure, and calculation . 2
7 Test conditions . 2
8 Test result . 2
9 Precision . 3
10 Test report . 3
Annex A (normative) Optical measurement method . 4
Annex B (normative) Electrical measurement method . 6
Annex C (normative) Corrosion area evaluation method . 8
Bibliography .10
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ISO 15106-7:2015(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.
ISO 15106 consists of the following parts, under the general title Plastics — Film and sheeting ―
Determination of water vapour transmission rate:
— Part 1: Humidity detection sensor method
— Part 2: Infrared detection sensor method
— Part 3: Electrolytic detection sensor method
— Part 4: Gas-chromatographic detection sensor method
— Part 5: Pressure sensor method
— Part 6: Atmospheric pressure ionization mass spectrometer method
— Part 7: Calcium corrosion method
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INTERNATIONAL STANDARD ISO 15106-7:2015(E)
Plastics — Film and sheeting — Determination of water
vapour transmission rate —
Part 7:
Calcium corrosion method
1 Scope
This part of ISO 15106 specifies a method for determining the water vapour transmission rate of plastic
film, plastic sheeting, and multi-layer structures including plastics based on measurements of calcium
degradation due to the reaction with water.
NOTE The method provides rapid measurement over a wide range of water vapour transmission rates.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
water vapour transmission rate
amount of water vapour transmitted through unit area of test specimen per unit time under specified
conditions
2
Note 1 to entry: Water vapour transmission rate is expressed in grams per square metre per 24 h [g/(m ∙24 h)].
2.2
seal material
adhesive materials between test specimen and glass slide for protecting the calcium film from the
corrosive gas
2.3
encapsulant
encapsulation material for protecting the calcium film from the corrosive gas
3 Principle
The calcium test method is based on measuring the rate of reaction between calcium metal and water. A
calcium film is deposited on a test specimen or a glass slide and sealed or encapsulated according to one
of the three procedures described in Annex A, Annex B, and Annex C. The water vapour transmission
rate is determined from the change of calcium film properties after exposure in an environmental
chamber as described in Annex A, Annex B, and Annex C.
4 Test specimens
4.1 The test specimens shall be representative of the material, free from wrinkles, creases and pinholes,
and have uniform thickness. Each test specimen shall have a larger area than the transmission area of the cell.
4.2 Three test specimens shall be tested unless otherwise specified or agreed between the interested
parties.
NOTE For some products, testing more than three test specimens gives a more representative result.
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ISO 15106-7:2015(E)

5 Conditioning
Condition the test specimens in vacuum or inert atmosphere. The period of conditioning shall be as
stated in the relevant specification for the material.
NOTE For some products, heating the test specimen is effective for rapid conditioning.
6 Apparatus, procedure, and calculation
6.1 Vacuum evaporator
The vacuum evaporator comprises a metal evaporation source, a substrate holder, a thickness monitor,
−2
and a shutter mechanism. The calcium metal shall be evaporated at less than 10 Pa. In addition, the
substrate temperature shall be kept low enough to prevent heating damage of specimen. A deposition
mask technique shall be used for the calcium film area control.
6.2 Glovebox
The water and oxygen content shall be less than 40 ppm in the glove box. The glove box shall have the
mechanism for transporting a calcium film substrate from the vacuum chamber without exposure
to atmosphere.
6.3 Environmental chamber
The temperature in the environmental chamber shall be kept within ±0,5 °C. In addition, the relative
humidity shall be within ±3 %.
6.4 Of the several methods availab
...