Kodi plywood imapangidwa bwanji? Kodi plywood ndi chiyani?

Plywood is a typical artificial board. It is called plywood abroad, also called multi-layer board. It has a typical odd-numbered layered structure. Each layer is superimposed perpendicular to each other.

This unique processing method creates structures that balance strength, stability and economy. Plywood does not constantly shrink and expand, deforming like solid wood. Plywood is generally from 3 to 17 layers. Generally speaking, the more layers of the same material, the better the plywood.

The quality of plywood depends on the material. Some are cork, such as pine, poplar, etc. The price of hardwood is higher than that of cork. There are also positive and negative differences between plywood, and the front is generally measured according to flatness and smoothness. There is also a side view of whether the layers are symmetrical, flat, and whether there are holes.

Plywood is a board that woodworking enthusiasts like very much, especially high-grade imported boards, which are called marine boards in the industry. In fact, in recent years, the production process of domestic plywood has been greatly improved, and the processed plywood is no worse than imported plywood, whether it is environmental protection or quality. aspect. The formaldehyde content of the glue used has reached and exceeded the European standard

How to make plywood?
Plywood making Plywood processing technology:

Ukadaulo wokonza plywood:

Popanga, kudula mitengo, kusenda, kuuma, kugwira, kusindikiza kotentha, kudula m'mphepete, kusenda mchenga kumakhudza kuwonongeka. Zowonongekazo ndi zotsalira za kukonza (zinthu) ndi kuchepa (kupanda thupi). Kuwonongeka kwa nkhuni kumakhudzana ndi zinthu, mawonekedwe a chipika, kuthekera kwa zida, ukadaulo ndi kapangidwe kake.

1) Kutsitsa kwa logo:

Log debarker:

Nthawi zambiri kutalika kwa chipika chochokera kunja kumapitilira 6 mita. Kudula malinga ndi luso lofunika kutalika ndi khalidwe. The kudula kutalika ayenera mankhwala kutalika kuwonjezera zotsalira. Mwachitsanzo, mankhwala ndi 1220mm * 2440mm, kudula kutalika zambiri 2600mm kapena 1300mm. kutalika kwa chipika, camber ndi demerit zimakhudza kutulutsa kwa plywood mwachindunji. Zotsalira ndi tiziduswa tating'ono tamatabwa, zodulira, utuchi, tec. Chiwopsezo cha kuwonongeka kwa mitengo ndi 3% -10%.

2) Kupukuta kwa Veneer:

Peeling ndi njira yotchuka kwambiri yopangira plywood. makulidwe a veneer kumbuyo ndi pafupifupi 0.6mm, core veneer ndi pakati veneer makulidwe pafupifupi 1.8mm.

3) Kuyanika:

Veneer ndi yonyowa. iyenera kuumitsidwa molingana ndi zofunikira zaukadaulo. Pambuyo kuyanika, imachepa. Dimension idzakhala yaying'ono. Veneer kutalika, m'lifupi, makulidwe adzachepa. Kuwonongeka kwapang'onopang'ono kumakhudzana ndi matabwa, chinyezi chokhala ndi, makulidwe a veneer. Kuwonongeka kwapakati ndi 4% -10%.

1.Steel Tube drying (The most economic type dryer,but capacity is less)

2.Solid hot platen press drier ( If your board is not flat you can choose hot platen solid press dryer.)

3.Core Veneer Continuous roller dryer ( If your capacity is bigger than 50cbm per day, you can choose roller dryer. )

4) Kusamalira Veneer:

Kugwira kumaphatikizapo kudula, kuika veneer pamodzi ndi kukonzanso. Dulani zonal veneer kukhala mtundu wofananira kapena kukula koyenera komwe kumatha kuphatikizidwa. Narrow zonal veneer akhoza kuikidwa palimodzi kukhala veneer imodzi. Veneer yokhala ndi demerit imatha kukonzedwa kuti ikhale yoyenera. Kuwonongeka mu gawoli lokhudzana ndi matabwa, mtundu wovunda, mtundu wouma, ndi luso la ogwira ntchito. Chiŵerengero cha zowonongeka ndi 4% -16%. Kulowetsedwa kwa veneer processing plywood chiwopsezo ndi 2% -11%.

Veneer kusonkhanitsa mzere kapena kusonkhanitsa manja

5) Cold Press:

The ozizira akanikizire maziko makina plywood chomera. Makinawa amatchedwanso pre-press. Chovalacho chikamatidwa ndikusonkhanitsidwa, choyamba chimapangidwa mumphika wopanda kanthu ndi makina ozizira. Kenako idzasamutsidwa ndi forklift ku makina osindikizira otentha.

6) Press Press:

Veneer amangiriridwa ndi kupakidwa, kenaka kumata pansi pa kutentha kokhazikitsidwa ndi kukakamizidwa ndi makina osindikizira otentha. Monga kutentha kwa veneer ndi chinyezi chokhala ndi kusintha, veneer imachepa. Kuwonongeka kwapang'onopang'ono kumakhudzana ndi kutentha, kupanikizika, nthawi yosindikizira yotentha, zinthu zamatabwa, chinyezi chokhala ndi, chiŵerengero cha zowonongeka ndi 3% -8%

7) Kuchepetsa m'mphepete:

Kudula m'mphepete mwa plywood flank kuchokera ku makina osindikizira otentha kupita ku plywood yoyenerera. Zotsalira zokhudzana ndi zotsalira za ndondomeko ndi kukula kwa mankhwala. Kupanga kumakhala kokulirapo, kuwononga kumakhala kochepa. Chiyerekezo chowononga ndi 6% -9%

8) Kusamba

Pangani mchenga wa plywood pamwamba kuti ukhale wabwino. Kuwononga ndi ufa. Ubwino wa Veneer ndi wabwino, mchenga ndi wocheperako. Chiyerekezo chowononga ndi 2% -6%

9) Malo osungira:

Plywood imanyamula palletize kapena zambiri

(10) Laminating with veneer, melamine paper, membrane paper etc.

Anamaliza plywood mankhwala