Introduction of the main timber species, timber properties and wood quality imported by Papua New Guinea

Lacqueraceae

1.1 no诺漆Campnosperma spp, lacquer tree, code "CA"

The log features medium to tall trees, about 30 meters high and 0.5 meters in diameter. The difference between the heart and the sapwood is slightly obvious, and the heartwood is grayish pink or taupe reddish with dark pinstripes. The sapwood is light in color and 5-8cm wide. The growth wheel is not obvious. The bark is 1-2cm thick, hard and easy to peel off. The skin is grayish white; it is extremely thin and easy to peel off. The endothelium is reddish, the bast fiber is slightly developed, the stone cells are developed, and the gauze is granular. Dark sap is often exuded when fresh bark is peeled off. The wood structure is fine and uniform, with shallow to deep interlaced texture, weak gloss, low strength, low corrosion resistance, low shrinkage rate, easy drying and processing, slight warping and cracking, thick cut surface, fluffing, and general adhesiveness of paint. Good grip strength. Air dry density 0.37g/cm3. Wood use for plywood, rotary cutting veneer, matchstick box, packaging materials, furniture, etc.

4.1.2 Human face Dracontomelon spp., lacquer tree, codenamed "WAL"

The log features large trees with a height of 30-35 meters and a diameter of 0.6-1.0 meters. The rind is taupe or cyan, and the lenticels are hard and easily peeled off. The material table has shallow grooves and a nearly round cross section. The heartwood and sapwood are distinctly different. The heartwood is yellowish white or yellowish white with a grayish gray color. The inward turn is dark gray. The vertical cut is black strips. The sapwood is wide, grayish yellow or light rose, and the width is up to 20cm. The growth wheel is slightly more obvious and more uniform.

The wood structure is fine to medium, straight or staggered, sometimes wavy and shiny. The weight, hardness and strength are medium, and the air dry density is about 0.6g/cm3. Drying is difficult, but the processing is easy, the paint is good, and the surface has dark stripes similar to walnut wood. The higher the value, the more precious decorative material, the wood sinking in the water, and special care must be taken when working on the surface.

Uses are generally used for special furniture and interior construction materials.

4.1.3 Glue tree Gllta spp. Paint tree, codenamed "HEK".

Logs feature deciduous trees, with a height of about 37 meters and a breast diameter of 1.2 meters. The bark is slightly thick, hard and difficult to peel off. The material has a shallow groove and a nearly circular section. The difference between heart and sapwood is very obvious, the heartwood is fresh purple red, the sapwood is about 10cm wide pink, with dark tissue band, and the vertical cut mask is golden and shiny, which is especially beautiful.

The structure of the wood is fine, the texture is staggered, heavy and hard, high strength, dry shrinkage, air dry density 0.84g/cm3, heartwood corrosion resistance, poor sapwood, wood containing silicon crystal, difficult to machine and cut, dimensional stability Well, Guangdong regards this wood as "redwood".

Wood use is used for imitation mahogany furniture, joinery, building materials, rotary cutting veneers, sliced ​​veneers, etc.

Sylvestris

4.3.1 Sapphire Wood (both red and white) Planchonella torricellensts, S. sylvestris, codenamed "PLW, PLR".

The characteristics of the logs are not obvious, and they are grayish white or yellowish white (called Baishanlan), and also have the same color as bakelite (called Hongshanlam). The wood structure is coarse, staggered, low in corrosion resistance, easy to dry and process, smooth in cut surface, good in adhesiveness and strong nail holding force. It is suitable for furniture, interior decoration and plywood. Baishanlan can be used instead of Laming wood.

4.3.2 Burkella obovata, sylvestris, codenamed "BUR".

The log features sapwood pale pink, heartwood pink or reddish brown.

In the wood structure, the texture is staggered, the hardness and strength, the corrosion resistance is poor, the processing is easy, and the paint is sticky.

Uses for furniture, decorative materials, flooring, joinery, veneers, etc.

4.3.3 Bakelite Palaqium spp., Sapphire, codenamed "PC".

The book cover of undergraduate trees contains white milk, which is shaped like gum. The import volume of this species accounts for 1% of the imports of Nanyang wood. The characteristic bark of the log is gray-brown, and the surface is thin and brown after peeling. The thickness is 1cm or more and can reach 3cm. The stone cells on the outer side of the cross-section can be scattered and dense. . It gradually decreases toward the inside, and the inner side is almost entirely composed of a phloem layer. There are no stone cells in the inner surface cortex, no layered structure and ray pattern. The inner surface of the bark is light brown and brown, the fiber is peeled off, the bast fiber is soft and tough, and the phloem rays are not obvious to the naked eye. Most of the logs are cracked, sometimes white sap, with small wormholes.

The macroscopic structure of wood is not obvious, the wood is light brown, the sapwood is slightly lighter in color, the wood is slightly lustrous, there is no special smell, the taste is slightly sloppy, the growth wheel is slightly obvious, the wheel has dark wood fiber layer, and the width is slightly uniform. The tube hole is medium, obvious under the naked eye, slightly uniform, slightly unevenly distributed, the near wheel boundary is dense, the number is slightly less, almost all of the short diameter column complex tube hole, the axial thin wall tissue is intermittently thin string, width Very narrow, very dense, intertwined with rays into a network, after the water is wet, the tube type can be discerned, the wood beam is slightly thin and dense, the width is about 1/4 tube aperture, the radial ray pattern is not obvious, the near material color, the string surface The wave marks are not visible, and the duct grooves are fine and clear.

The texture of the wood is slightly staggered, the structure is slightly thin, uniform, slightly lighter, dry and shrinking, dry and easy to crack and warp, not resistant to corrosion, susceptible to attack by green bacteria, easy to saw, serrated and easy to stick resin, smooth cut surface, paint After the light is medium; the adhesive performance is quite good; the nail holding power is weak, no splitting, the wood gas dry specific gravity is 0.545, the strength is 6 grade, and the corrosion resistance is 4 grade.

Wood is used for general furniture, packing boxes, matchstick boxes, toothpicks; roof trusses, doors and windows and other interior decorations (except for floors), sculptures, toys, models, compartment panels and pulp materials for light-duty building construction; can be used to cut and cut ordinary plywood.

Identification points Most of the logs are cracked, sometimes white gums are exuded, ducts and fistulas have looped tracheids, axial thin-walled tissue short tangent lines, containing gum and rhombohedral crystals, wood fibers with single-grained holes, ray-specific I and Different type II, the cells are extremely irregular.

Cockroach

4.4.1 Aglaia spp., 楝科, codenamed "AGL".

The log pattern of the log is deep and obvious, which is a feature of the identification of the species. The heartwood is light brown to reddish brown, and the sapwood is yellow to red.

The structure of the wood is fine, the hardness is high, the strength is high, the drying process is easy, and the paint is glued to the nail holding force.

Use for furniture flooring, veneer, joinery, shipbuilding, etc.

4.4.2 Toona ciliate var.sureni, 楝科, codenamed "CER". The characteristic bark of the log is similar to the Japanese juniper. It is auburn, thin and fibrous, and the long and shallow lobes fall off. The sapwood is about 2.5cm wide, which is close to the pale yellow of white. The heartwood is reddish auburn and has a fragrant taste. The wood texture is straight, soft, and has a high shrinkage. The raft has durability, but its durability is poor when it is external or grounded.

Use for furniture, sculpture, musical instruments, toys, etc.

4.4.3 Mango Cedar, 楝科, codenamed “MC”.

Wood features wood reddish brown or deep reddish brown, sapwood is slightly shallow, wood structure is fine, until staggered texture, hard, high strength, high corrosion resistance. Dry, easy to process, but easy to crack, good finished product, paint adhesive, nail holding force are medium. Uses for high-grade furniture, interior decoration materials, flooring, building materials, shipbuilding, etc.

Sycamore

4.5.1 Silver leaf tree Heritiera littoralis, Indus, code "HR"

The wood features the heartwood gray-brown brown, the sapwood color is light, the language is discolored, and the cut surface is shiny. The wood structure is thick, the texture is slightly oblique, the material is hard, the strength is high, the corrosion resistance is strong, the drying is fast, the processing is difficult, the cutting surface is smooth, the paint glue is good, and the nail holding force is medium.

Wood use for plywood, furniture, flooring, decorative materials, shipbuilding, etc.

4.5.2 Abemu Pterocymbium, Indus, alias Wing Huamu, codenamed "AMB", the main producing area Central log features table with prismatic protrusions, now the lamp gauze, often leaving residual skin, raw material smelly. The sapwood is grayish brown, the heartwood is grayish yellow with reddish yellow and yellow, and when it is long, it turns dark red.

The wood structure is thick, the texture is straight, the wood is soft, the strength is low, the corrosion resistance is low, and the air dry density is 0.51g/cm3. Dry and easy to process, easy to change color, paint adhesive is generally sticky, nail holding power, is a soft material.

Wood use matchboxes, aviation models, plywood, etc.

Myrtaceae

4.6.1 Syzygium buettnerianum, Myrtaceae, codename "WG"

The wood features heartwood purple reddish brown or deep reddish brown, the sapwood is grayish brown and brown, easy to change color. The wood structure is fine, the arts and sciences are staggered to distortion, the material is hard, the strength is high, and the corrosion resistance is high. Dry processing performance is general, the cut surface is smooth, the paint is sticky, and the nail holding force is in the middle.

Wood use for shipbuilding, decorative materials, furniture, tools, vehicle materials, etc.

4.6.2 Peeling Eucalyptus deglupta, Myrtaceae, codenamed "KAM".

The characteristic bark of the log is reddish brown, smooth, with longitudinal strip cracks, the bark is extremely thin, the thickness is 3-4mm, the fiber is obvious, the section is grayish, extremely dense, with white powder points, and the phloem ray is wet and enlarged. It can be seen under the microscope, extremely fine and dense, the keratin ray pattern of the cut surface is obvious, the stone cells are not seen, the inner surface of the bark is slightly smooth, the fibrous layer is peeling off, the texture is soft and tough, the phloem rays are very fine, densely distributed, non- Stacked, with eye-opening, more round barrels, larger diameter. The macroscopic structure of the wood is not obvious, the heartwood is brown, light reddish brown or auburn. When the new material is sapwood, it is yellowish brown, the wood is slightly lustrous, no special smell and taste, the growth wheel is slightly obvious, and the wheel boundary is dark fiber tissue. Belt, tube hole medium to slightly larger, visible under the naked eye, scattered holes, uniform size and forestry, slightly uneven distribution, reduced at the end of the wheel, oblique or zigzag, tube hole alone and oblique column tube hole, intrusion It can be seen that the axial thin nasal cells are mixed with the tracheal tracheids, which are like bundles of thin-walled tissue. The wood rays are very thin and many, which are not visible under the naked eye. The magnification can be resolved under the microscope, and the width is smaller than 1/6 of the diameter of the tube. The surface ray pattern is not obvious, slightly the same color, the chord wave marks and the intercellular tract are not seen, and the catheter groove is visible under the naked eye, slightly thicker and more.

The texture of wood is staggered, the structure is slightly thick, the texture is slightly hard and heavy, the shrinkage is medium, the drying is difficult, there are internal cracks and shrinkage, the deformation is not resistant to corrosion, the small aphids are harmful, the edge is easy to be blue, the anti-corrosion treatment is difficult, the saw It is not difficult to solve, it is easy to bend when making materials, it is easy to produce reverse grain when planing, and the strip has a strip pattern. It has good gloss after painting, easy to glue, strong nail holding power, specific gravity of gas dryness 0.69, strength 4, resistance Corrosive level 3.

Wood use is generally used in construction engineering, joists, pillars, stairs, floors, roof trusses, bridges and wharf works. It can be used for sleepers, pits, carriages, furniture, ships, plywood core materials, sports equipment, papermaking materials, etc. Content: wood is 12%-14%, bark 8%-17%, bark contains 0.27% eucalyptus oil, which can be used as raw material for extraction.

Identification points The bark is reddish-brown, smooth and extremely thin. The wood tube holes are arranged obliquely or zigzag. The axial thin-walled tissue is short-cut and linear, with looped tracheids, and the wooden ray is in the same shape and in two rows.

Rubiaceae

4.7.1 Gora Garo, Rubiaceae, codenamed "GAG"

The difference between the characteristics of the logs is not obvious, and the color of the wood is pale yellow to brown.

The wood structure is fine, the texture is straight, the material is hard, the strength is high, the corrosion resistance is easy, the processing is easy, the paint glue is generally sticky, and the nail holding force is in the middle.

Wood use for furniture, shipbuilding, joinery, flooring, tool handles, etc.

4.7.2 Anthocephalus chinensis, Rubiaceae, codename "LAB". Log characteristics The tree species are large deciduous trees with a height of up to 30 meters and fast-growing trees. The tree belt is grayish yellow and white, with irregular cracks, endothelial yellow, fibrous paper-like lamination, the fibers are similar to hemp after separation; the bark is 1-2cm thick, the phloem rays are slightly grooved on the inner surface of the bark, and the logs are straight. The cross-section has a large waveform and is filled with white soft tissue.

The macroscopic structure of the wood has no difference in heart and edge. The wood is light yellowish brown, the wood is shiny, no special smell and taste. The growth wheel is not obvious to slightly obvious. The hole is medium, visible under the naked eye, slightly uniform in size, scattered pore material, and not distributed. Uniform; the tube hole is less to a little less, the diameter of the compound tube hole, occasionally alone, the invading body is not seen, the size is slightly consistent, the axial thin-walled tissue is visible under the microscope, and the string is short between the rays. The number of wood ray is slightly more, slightly thinner, visible under the naked eye, the width is 1/3-1/4 tube aperture, the ray pattern of the radial surface is obvious, slightly the same color, the chord surface trace and the intercellular channel are not seen, the catheter The slot is obvious. The structure of the wood is thick, until the staggered texture, the material is light and soft, the drying is reduced, the strength is low, the corrosion resistance is low, the drying is easy, and the cracking is not performed. The sapwood often has a blue color, is not resistant to termites, is easy to cut, has a smooth surface, is easy to be cut, has good adhesiveness, weak nail holding power, and has a wood dry weight of 0.468, a strength of 6 and a corrosion resistance of 4.

The use of trees is tall and straight, easy to rotate, suitable for making plywood. The pulp obtained by the sulfite method has high strength. The wood is an excellent packaging material and match material. It can be used for canoes, boats, cores, pots, rafts, Bellows, mouldings, carvings, ordinary furniture, etc. It is said that the bark can be used as an antipyretic and cooling medicine, and it can cure mumps in children. It can also be used as a mouthwash for trees, and trees can be used as garden ornamental trees and street trees.

Zebra Blinds

Zebra Blinds are Very decorative and also functional Day & Night fabrics consist of transparent and darkening strips. Overlapping two layers of fabric and moving them in relation to each other gives a wide range of possibilities to regulate the degree of insolation or darkening a room. Besides depending on a colour it may protect household members' privacy after dark.  

Characteristics of Fabrics:

impregnated fabric resistant to dust.

Zebra Blinds

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