Change-preventing environment-friendly repurification treatment method and device of sheet material
A treatment method and repurification technology, which can be used in wood processing appliances, other plywood/plywood appliances, household components, etc., can solve problems such as volatilization and indoor environmental pollution, and achieve the effects of simple device structure, improved process efficiency, and easy implementation.
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Embodiment 1
[0023] Purchase four pieces of high-quality joinery boards from the same batch of wood-based boards from the same manufacturer, saw them into two equal halves, and then take samples to test the formaldehyde emission of these eight wood-based board samples. The test results show that the formaldehyde emission of the eight sample plates is basically the same at 1.2mg / L. One of the two samples from the same plate is randomly distributed in a ventilated place, and the other sample is processed by the method of the present invention. The processing method and process are as follows:
[0024] (1) Place the plate 17 of the sample in the airtight processing box 1 and code it layer by layer.
[0025] (2) Start the leveling pressure device 2, and lock the pressure when reaching the elastic critical value.
[0026] (3) Start the heating device 3, and the heated turbid gas overflows from the opened release valve 18, and is discharged through the pipeline purification device; after being...
Embodiment 2
[0042] The steps of this embodiment are the same as in Embodiment 1. The processing parameters were the same except that the temperature was changed to be locked at 60 °C.
[0043] After 72 hours, the sample processed by the method of the present invention and another sample processed by natural emission were used for comparative detection of formaldehyde emission, and the values were 0.5 mg / L and 1.1 mg / L respectively.
Embodiment 3
[0045] The steps of this embodiment are the same as in Embodiment 1. The processing parameters were the same except that the vacuum processing time was doubled.
[0046] After 72 hours, the sample processed by the method of the present invention and another sample processed by natural emission were tested for formaldehyde emission, and the values were 0.5 mg / L and 1.2 mg / L respectively.
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