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The harvested bamboo stalk is hollow with a hard outer wall. Long rectangular strips are cut from the wall and are boiled to remove sugars and kill any insects. The strips that pass a final visual quality control inspection will be used to construct bamboo flooring or paneling. Our manufacturer harvests from selected areas that provide the best quality bamboo strips.

The quality of strips is of the utmost importance since bamboo flooring is an assembled product consisting of approximately 15 strips for the horizontal construction and about 19 strips for the vertical construction. This is one of bamboo’s major differences from solid wood flooring.

These bamboo strips are obtained from plants located in the bamboo forests of Fujian province, China. There, the bamboo log is split into the rough strips and then processed into semi-finished strips or rough boards. Quality control methods are used at these plants to deliver strips meeting stringent requirements.

Strips are initially inspected for quality and separated into class A or class B strips. Only class A strips are used for our flooring. B quality strips are sold at a discount to less demanding manufacturers. A major reason for the lower prices offered by some manufacturers and/or importers is their use of B quality strips.

Some of the strips are immediately steamed under pressure. This process, known as carbonization, changes the color throughout the strip from a blonde, yellow color to a brown, coffee color. Typically, carbonization occurs further down the production process.

All strips not carbonized at this point must be boiled in treated water to remove the sugar and kill any pests. This process should be completed within 10 days of stripping the log’s outer skin. If this is not completed within 10 days, the strips will begin to rot.

The boiling process weakens the strips by approximately 8%. After boiling or carbonizing, the strips are milled to a uniform size then kiln dried for three days. This reduces the moisture content of the strips 8-10%. The strips are now milled to a final width and thickness to prepare them for assembly into the finished boards.

The final phase of bamboo flooring production begins with the gluing process. Most Chinese made glue is high in formaldehyde. Even thought if the Chinese Domestic glue does meet the E-1 Standard but most of the time its lifetime is shorter and strength is less than European (E-1) glue. However, our manufacturers require the use of a high quality, European (E-1) glue that exceeds most indoor air quality requirements for formaldehyde emission. Our bamboo, when tested in a climate chamber according to ENV 717-1, 1998, Part 1, Annex A3, emits only 0.0127 parts per million of formaldehyde. Therefore stock is a formaldehyde-free, PREMIUM quality product in addition to low formaldehyde bamboo flooring.

During the production process, glued strips are assembled face up for horizontal flooring and side by side for the vertical construction. This is followed by hot pressing, where heat and pressure of up to 1,200 tons PSI binds the strips together.

A major quality consideration is the molding operation where the side and end tongue and grooves are milled to exacting tolerances that assures uniform straight edges. The multi-step German molding machine is unique to our manufacturer and performs all milling functions in one pass. The diamond-tipped cutting tools assure close tolerance over long production runs. Tolerances are guaranteed as follows:

Width: +/- 0.1 mm, Length: +/- 1mm, Thickness: +/- 0.1 mm

Supplies include both square edged, unfinished flooring and micro-beveled, prefinished flooring. Our manufacturer has two fully equipped finishing lines that apply 6 coats of Treffert’s High Performance Coating (HPC). This finish consists of micro- or nano-particle modified acrylate urethane resins that combine extreme hardness with high mechanical resistance to scratch, impact and abrasion.

The boards are finely sanded during the finishing process with a high precision sanding machine. The sanding eliminates air pockets or pinholes from the final product and also guarantees the high adhesiveness of the urethane. Treffert, an internationally known European finish manufacturer, guarantees the finish for 15 years in a residential setting and 5 years for commercial use. These planks can be easily re-finished as the anti-abrasion alumina oxide particles are only added in the 2nd step of the finishing process.







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