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8 (99.9.30) |
Investigating the effects of packaging materials on products |
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Abstract
Modern packaging materials emit naturally-occurring gas that can corrode the
metal parts of the products. To investigate this problem, we developed methods
for testing and evaluating the Outgas. Our investigation revealed the source of corrosion
to be sulfuration due to hydrogen sulfide (H2S) emitted by the packaging materials.
Sulfuration varies with temperature, set-up conditions, and the quantity of the Outgas.
To insure product reliability, care must be taken with the type of packaging materials
used, the packaging method, and the temperature during shipping. |
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5 (98.3.20)
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Reliability of wood materials in environmental testing |
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Abstract
Conventional environmental testing to evaluate wood materials has
emphasized early period characteristics, and has been unable to evaluate changes over
time. However, we noticed changes in the characteristics of wood materials due to changes
in the surrounding environment, and we tested this phenomenon. The results leave room
for further study, but we propose that the results can serve as useful test data using
environmental testing equipment. |
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