SEMPA LAB is constantly striving for new inventions and solutions for our customers. Our R&D activities and JDP’s (Joint Development Programs) with renowned national and international cooperation partners are also looking into advanced measurement technologies which are required for nowadays high end manufacturing processes. The main focus has been on transfer rates of permeates through barrier materials and certain sensing technology.
Next generation barrier measurements
HiBarSens® stands for ultra reliable measurement of permeation properties of barrier films. It is used for quality control of barrier film production processes as well as in research and development.
|HiBarSens® is based on the outstanding performance of a laser diode spectroscopic trace gas analysis.
The optical measuring principle enables a reliable trace detec-tion of permeated water vapor through thin films down to the ppb range. The measurement is free of sensor drift or sensor hysteresis.
HiBarSens® measures water vapor directly below the sample utilizing a rugged optical sensor. This opens up unique measu-rement concepts that allow flexible measurements of permea-tion properties with lowest WVTR detection limits.
HiBarSens® features three measurement modes. Any of them fulfil the mandatory steady-state measurement condition.
|Beyond mechanical protection, packaging material for
food and pharmaceuticals have another important function:
They have to protect the products against atmospheric
gases. Especially water vapor and oxygen are
critical to the long-term quality of these products.
Novel flexible optoelectronic devices such as OLED’s and
organic solar cells require barrier properties which are
in the range of (WVTR) ~ 10-6 g[H2O] m-2 d-1.
HiBarSens® is meeting the requirements from industry
and research to measure the dedicated permeation properties
(WVTR, breakthrough time) reliably.
Permeation measurements are required in different industries as well as in research environment. Every application has different requirements to the testing equipment, like sensitivity, selectivity, permeate or measurement duration.
The HiBarSens® family of measurement systems is designed to perfectly meet the needs of any application.
|Derives WVTR down to >8x10-5 g m-2 d-1 and is targeting food packaging, pharma and basic flexible electronic applications. HiBarSens® BASIC offers Carrier Gas measurement mode and is able to measure at temperatures up to 50 °C with flexible relative humidity range between 0-90 % as well as 100 %.
|Ultra-barriers down to 10-6 g m-2 d-1 and beyond are required for high end flexible electronic applications and are investi-gated in research institutions globally. Using Diffusion and Combination advanced modes HiBarSens® PRO enables the user to precisely determine the world of ultra-barriers.
On top of the BASIC functionality PRO also features high temperature measurements up to 85 °C, which leads to a drastic reduction of measurement duration and also offers the possibility to perform Damp-Heat (DH) Testing (85 °C and 85 % r.H.) of ultra-barriers for photovoltaic applications.
Besides water vapor, oxygen is also a permeate of very high interest.
The time consuming part of the WVTR measurement is to establish a stable water vapor concentration gradient within the barrier film sample. Precious equipment uptime is used meeting this important prerequisite.
Sempa has a preconditioning concept which enables HiBarSens® users to establish the extremely time consuming gradient in a separate PreCon-Cell setup. This results in a significantly higher utilization of the HiBarSens® device. PreConCell enables measurements of ultra barriers within several hours rather than weeks.
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