About environmental protection , many people still don’t understand it, but in fact, environmental protection issues are the most concerned issues for everyone at the moment.
Therefore, the key to identifying whether the board is good or bad is to understand the skin and core of the board .
No.1
plywood
plywood
First, start from a tree.
Step , cut a tree, then shovel all the bark , and turn it into a smooth and textured tree.
Step 2 , fix the tree trunk, and rotate the cutting of with a machine. Like a pencil, it is cut down layer by layer, the thinnest can reach 0.3mm, and finally about 8mm. The thickness of is generally between 2~3mm.
Then stack one vertically according to a certain size.
Step 3 , glue . Simply put, there is a machine where the cut thin wood slices come in from one side and then come out from the other side and are covered with glue.
The last step is , and the glued board is stacked layer by layer. After hot press , firmly sticks together to form plywood . The final molding is a bit similar to , a thousand-layer cake
cross-section is similar to thousand-layer cake
plywood
A little more vivid, it is like a wafer cake, layer by layer glued together.
points the key points! !
From the production process of plywood, it can be seen that:
- plywood is plates are glued layer by layer together. is much cheaper than solid wood , and the hardness is also good. It is suitable for on-site cutting construction
- plywood uses more glue . It is also because of this that people now gradually no longer use plywood to make furniture on site.
- Another name for plywood: plywood , triple board , -cent board . There is also called multi-layer solid wood board . Anyway, I just want to lean on the solid wood, so everyone must distinguish it clearly!
Just remember a little! The ones pressed up with the boards layer by layer are all plywood, but the names are different.
No.2
Large core board
Joinery board
Making process , in fact, the principle is very simple. The "core" inside is made of small wooden strips spliced together with , and the "skin" on the surface is made of a painted wooden board covering .
is generally a tree or a large piece of wooden stake, which is sawed into small wooden boards of specific specifications and sizes.
Then the small wooden board is with glue on the side, splicing, and after applying glue on the surface of , use the machine to hot press , and then it is finished.
Using scene , the large core board is mainly used for curtain box , ceiling shape, and under door frame. When there are large gaps on both sides of the bottom of the door, use them to make door frames and add padding.
No.3
Density board
MDF board
Processing material , which is made into powder and hot pressed with glue.
Density board of the sterilized board
making process
first step , grind pieces of wood without peeling, and directly into pieces. After several steps of washing, sieve, boiling and grinding, finally gets a delicate powder .
Step 2 , put the powder into the machine and add glue and stir , stir well, pre-press first.
Step 3 , put the pre-pressed thick plates into the machine, and then hot press to obtain more "slimmer" wooden boards .
The last step , saw off the bristle edges, sand and make it slipperier surface , stack, complete.
density board molding
density board classification
Fiberboard density levels are divided into intermediate, advanced and low-level .
Medium-density fiberboard abbreviated as medium-fiber board , is often used in furniture , which is suitable for making composite floor in high density, and is suitable for making decorative lines in low density.
usage scenario , can be used to make various cabinets . However, it is worth noting that
MDF board is relatively poor in waterproofing . Once it is damp, the board will be curled up. Therefore, it is best not to use MDF boards in kitchens, bathrooms and other places that are prone to moisture.
No.4
Finger board
The most common type of Finger board
The most common type of Finger board , our Kitchen has always used "cutting board" . Compared with ordinary large core boards, comb teeth tenon machine is needed to use comb teeth tenon machine to open . After the tenon is opened, the two ends of the wooden strips of are like wooden comb , and the machine then splices , which is the so-called "finger joint board".
finger-joined wooden strips, glued and cold pressed on the sides, and sawed into a standard-specific whole finger-joining board.
above is Tight tooth , you can see the wooden strips pointing to the ground. Another type is dark teeth , which refers to the joint on the side of the wooden strip.
actually has a similar process to the process of the finger-connecting board. The advantage of the finger-connecting board is :
has less upper and lower panels than ordinary large-core boards, and the glue used for is much less than that of .
Science popularize
finger joint board is also called: tooth joint board , solid wood integrated board .
click the key point. Many merchants will call this " solid wood ", but it is actually wrong, because this is not a whole piece of wood. The whole solid wood board is generally called " log board " .
No.5
Particleboard
Also called Solid wood pellet board
is very similar to a density board, but Density board uses wood powder and wood fibers for particleboard, that is, shaved
The compactness of the particleboard is not as strong as that of the density board. You can see pores in the middle when you cut the cross-section.
is to make wood or other wood edge materials into crushed materials, that is, turn them into shavings. After applying adhesive is glued into artificial board under the action of heat and pressure.
In the building materials market, particle board is usually a bit cheaper than density boards.
Currently, most custom wardrobes on the market use particle board , which is density board. Many merchants will also call it "solid wood pellet board", but they are actually the same thing.
In addition, because particle board is easy to absorb moisture , large brands will add moisture resistant particles when making cabinets with particle board, which makes particle board also have moisture resistant properties. is very suitable for making wardrobe .
Hongkai Furniture Desk Desktop is generally made of medium-density fiberboard, particle board or multi-layer solid wood board, and the upper and lower sides are made of wood grain veneer fireproof board . The surroundings of the panel are made by disposable injection molding and edge sealing. Hongkai Furniture has an in-depth understanding of desks and chairs, pays great attention to the details of desks and chairs, ensures the safety, practical performance and visual aesthetics of desks and chairs, and always makes it their responsibility to improve students' learning environment, and constantly provide safe, high-quality, scientific and healthy student desks and chairs to major colleges and universities.
