The following contain frequently-asked questions for “Katawaku-ecochan” of the plywood for concrete formwork.
If you have any further questions, feel free to ask us.
Q.:Do polypropylene sheets stretch?
A.:This is a sheet in which stretching caused by temperatures or humidity is eliminated.
Q.:Are polypropylene sheets and plywood difficult to adhere?
A.:Adherence performance of plywood for JAS concrete formwork is ensured by specially processed sheets.
Q.:Are polypropylene sheets resistant to alkalinity in concrete?
A.:The polypropylene sheet is excellent in resistance to alkalinity and form releasing capabilities.
Q.:Is a form release agent required?
A.:Make sure to use it! Less slag is adhered and scraping work is easy! The number of reuses increases!
Q.:Are the polypropylene sheets resistant to sparks?
A.:Do not bring the sheets near fire directly. Keep away from fire! The sheets will deform at about 120℃ or higher.
Q.:Are the propylene sheets slippery?
A.:They will become slippery if water or oil is deposited. In particular, watch your step.
Q.:Are nailing, saw cutting and separator hole making possible?
A.:The same as conventionally coated plywood. Smooth cutting edges are obtained by making separator holes from the sheet side.
Q.:Do polypropylene sheets release harmful gases when incinerated?
A.:Both polypropylene sheets and the adhesive do not release harmful gases.
Q.:Is the cost reduced in comparison with coated plywood?
・ The cost is reduced by increased performance of plywood with the effectiveness of polypropylene sheets.
・ The cost is reduced by the increased number of reuses.
・ The cost is reduced by decrease in waste amount.
Q.:How is plywood for concrete formwork environmentally friendly and how does it contribute to the environment?
A.:・ Increased durability contributes to reductions in CO2!
・ Waste materials of fibers are recycled for materials of the polypropylene sheet.
・ Increased durability reduces the use amount of south-sea wood, contributing to the global environment!
・ Amount of waste after use is reduced!
Q.:How are waste materials processed?
A.:Waste if recycled as materials for RPF (recycle plastic fuel) to contribute to prevention of global warming.
Q.:How does scraping work?
A.:Use of form release agent allows slag to be thoroughly removed by moistened cloth, mop or nylon brush. So, scraping work is easy!
Q.:How about scraping labor to remove slag in comparison with conventionally coated plywood?
A.: Adherence of less slag allows easy finish.
If you have any further questions, please feel free to contact us.

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