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Kako se izrađuje šperploča? Što je šperploča?

Vrijeme: 2022-07-18 Učitavanja: 13

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

Kako napraviti šperploču?
Plywood making Plywood processing technology:

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Plywood processing technology:

In the producing process, log cutting, peeling, dry, handling, hot press, edge trimming, sanding affect the wastage. The wastage is remains of processing (materiality) and shrinking (immateriality). Wood wastage is related to the material, specification of log, equipment capability, technology and production specification.

1) Log debarking:

Log debarker:

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Dužina uvoznog trupca obično je veća od 6 metara. Rezanje prema tehnologiji potrebne duljine i kvalitete. Duljina rezanja treba biti duljina proizvoda i ostataka. Na primjer, proizvod je 1220 mm * 2440 mm, duljina rezanja obično je 2600 mm ili 1300 mm. duljina trupaca, nagib i nedostatak izravno utječu na proizvodnju šperploče. Ostaci su sitni komadi drva, krnja, piljevina, tec. Omjer otpada pri rezanju trupaca je 3%-10%.

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2) Veneer peeling:

Peeling is the most popular plywood producing process. Back veneer thickness is about 0.6mm, core veneer and centre veneer thickness is about 1.8mm.

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3) Sušenje:

Veneer is moist. it should be dried according to the technology requirement. After drying, it will shrink. Dimension will become smaller. Veneer length, width, thickness will shrink.  Shrink wastage is related to wood material, moisture containing, veneer thickness. Shrink wastage is 4%-10%.

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

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

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

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4) Veneer handling:

Rukovanje uključuje rezanje, sastavljanje furnira i popravljanje. Izrežite zonski furnir u furnir specifikacije ili odgovarajuću veličinu koja se može sastaviti. Uski zonalni furnir se može spojiti u jedan furnir. Furnir s nedostatkom može se popraviti kako bi se kvalificirao. Rasipanje u ovom dijelu odnosi se na materijal trupaca, kvalitetu ljuštenog furnira, kvalitetu osušenog materijala i vještinu rada radnika. Omjer otpada je 4%-16%. Omjer otpada od šperploče za preradu uvoznog furnira je 2%-11%.

Veneer assemble line or hand assemble

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5) Cold Press:

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The cold press the basic machine for plywood plant. This machine is also called pre-press. The veneer after glued and assemble, first it will be formed in to the blank panle by the cold press. Then it will be transferred by forklift to the hot press.

6) Hot press:

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Veneer be glued and stacked, then glue together under set temperature and pressure by hot press. As veneer temperature and moisture containing changes, veneer will shrink.  Shrink wastage is related to temperature, pressure, hot press time, wood material, moisture containing, wastage ratio is 3%-8%

7) Obrezivanje rubova:

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Trimming the edge of the plywood flank from hot press to qualified plywood board. Remains related to process remains and product dimension. Production is bigger, wastage is smaller. Wastage ratio is 6%-9%

8) Sanding

Brušenje površine šperploče kako bi bila dobra. Otpad je prah. Kvaliteta furnira je dobra, brušenje je manje. Omjer otpada je 2%-6%

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9) Warehousing:

Plywood is packing in palletize or in bulk

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

Finished plywood products

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Prethodna: Prediktivna analiza: status razvoja i trend razvoja kineske industrije ploča na bazi drva 2022

Sljedeća: Zašto je šperploča deformirana?

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