The invention relates to a bamboo fence making method. The method comprises the following steps that (a) a bamboo material is made by adopting raw bamboos; (b) mold and insect prevention liquid is sprayed; (c) a bamboo fence is made; (d) heat treatment is performed; (e) water spraying is performed for cooling; (f) drying is performed. The made bamboo fence does not produce the adverse influence on the environment, also has an insect prevention effect, and the effect duration is at least 2 years.

A rotary separation devise deploys a drum with mesh like opening on the cylindrical surfaces and a removable cover or cap for filling in an upright position and removal of product or spent matter in an inverted position. When the drum is loaded with material, and the cover closed, it is rotatable to a horizontal position, and disposed in an outer container. The drum is rotated in the horizontal position to initiate the separation process. The outer container may be formed by the mating engagement at a common rim of an upper and lower vessel that form the sealed container.

Provided is a process for chemically modifying wood or non-wood comprising: (a) impregnating said wood or non-wood with an aqueous composition comprising an acid polymerization catalyst; (b) impregnating the wood or non-wood product from step (a) with 3-furfuryl borate (3-FB); and (c) subjecting the wood product from (b) for a time and under conditions to affect polymerization of the 3-FB. Modified wood and non-wood products are also provided.

A hollow bamboo strip includes mao bamboo sheets formed by splitting bamboo; the two sides of a mao bamboo sheet are cut with matching surfaces, thereby making a finished bamboo sheet with a trapezoidal cross section, the matching surfaces of a plurality of finished bamboo sheets are successively spliced or finger jointed into a hollow bamboo strip with a hollow structure. A hollow bamboo board is spliced by fitting several hollow bamboo strips at side surfaces. A method for manufacturing a hollow bamboo board includes: splitting the bamboo into several mao bamboo sheets in its peripheral direction; cutting a mao bamboo sheet into a finished bamboo sheet with a trapezoidal cross section; carbonizing the finished bamboo sheet; forming the finished bamboo sheets subjected to carbonization into a hollow bamboo strip; fitting corresponding side surfaces of several hollow bamboo strips to be spliced into a hollow bamboo board.

The present invention discloses a one-step integrally-formed bamboo sleeper. For the one-step integrally-formed bamboo sleeper, a bamboo unit is used as a raw material, to be dried and modified at the temperature of 110-180 C., and then subject to adhesive dipping, adhesive throwing, solidification, dopamine solution treatment, anti-mildew and/or anti-corrosion and/or anti-insect treatment, and fastening, to obtain the one-step integrally-formed bamboo sleeper with a density of 0.9-1.5 g/cm.sup.3. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention has a suitable elastic modulus, and applicable for ballasted tracks of railways and urban rail transit systems.

The present invention discloses an assembled bamboo sleeper, which is obtained by using a bamboo unit as a raw material, dried and modified at the temperature of 110-180 C., undergone coating treatment using a dopamine solution, adhesive dipping, curing and solidifying, assembling and gluing, further solidifying, further treatment using a dopamine solution, and anti-mildew and/or anti-corrosion and/or anti-insect treatment, and then fastened. The present invention further provides a preparation method for the foregoing bamboo sleeper. The bamboo sleeper prepared in the present invention is green and environmentally friendly, and applicable for ballasted tracks of railways and urban rail transit systems.

A sieving apparatus includes first and second sieving portions. The first sieving portion includes a sieve with a plurality of elongated holes or slits for separation of an object to be sieved based on difference in cross-sectional diameter. The second sieving portion with a sieve constituted by a porous plate includes round holes for separation of the object that has passed through the elongated holes or slits based on difference in aspect ratio. The second sieving portion is employed after sieving by the first sieving portion. A diameter of the round holes in the porous plate constituting the sieve included in the second sieving portion is longer than an opening width in a shorter direction of the elongated hole or the slit of the sieve included in the first sieving portion.

The present invention relates to an outdoor bamboo floor and a manufacturing method thereof, in particular, to an outdoor bamboo floor subjected to an immersion treatment using hot oil. Conduits or other capillary structures of a bamboo material in the outdoor bamboo floor of the present invention are filled with an oil medium, with an oil content of 2-10%. The manufacturing method includes immersing a plate blank of the bamboo floor in a hydrophobic organic medium at 100-300 C. for 1-10h, and are statically cooled down to a room temperature after being taken out.

A rotary separation device deploys a drum with mesh like opening on the cylindrical surfaces and a removable cover or cap for filling in an upright position and removal of product or spent matter in an inverted position. When the drum is loaded with material, and the cover closed, it is rotatable to a horizontal position, and disposed in an outer container. The drum is rotated in the horizontal position to initiate the separation process. The outer container may be formed by the mating engagement at a common rim of an upper and lower vessel that form the sealed container.

Disclosed is a method of manufacturing bamboo toothbrush and a toothbrush manufactured thereby. According to the method of manufacturing bamboo toothbrush of a detailed embodiment of the present invention and a toothbrush manufactured by the method, it is possible to improve strength, surface roughness, and moisture resistance of a bamboo and adjust the color of the bamboo using hot pressing. Further, since sanding and polishing and separate coating and drying are not performed, the process time is reduced, whereby the manufacturing cost can be reduced.