CN1103277C - Manufacture of faced bamboo board - Google Patents

Abstract

The present invention belongs to a method for manufacturing a lamination bamboo rubber plate with a decorative facing layer, particularly to an improvement of a one-step forming method. The present invention focuses the smooth and clean processing of a hot plate, thickness control and cold in and cold out under the limitation of a solidification condition; thus, the present invention effectively overcomes the defect of poor surface quality of a product existing in the original one-step forming mold-plate process, and the one-step forming method obtains a new chance. The present invention is more practical than a two-step forming method, and the present invention is favorable for saving energy sources and reducing the cost.

Description

The manufacture method of facing bamboo glue pattern plate

The present invention relates to the manufacturing of laminates.The particularly manufacturing of building template.

At present, bamboo glue pattern plate has begun to be widely used in multiple industry, particularly building industry, and its product comprises vegetarian noodles bamboo glue pattern plate and facing bamboo glue pattern plate two classes.Wherein the finish coat of facing bamboo glue pattern plate has again with bamboo matter layer and is the paper overlay film facing of substrate and is two kinds of patterns of paper overlay film facing of substrate with the layer of wood.

As the manufacture method of Chinese patent 92107832.3 disclosed relevant building templates, it is a base material with the bamboo fiber board finished product, and through surperficial hacking, the compound paper of being handled by Wooden veneer and several layers impregnation is pasted the method that is shaped with pressurization and finished facing.Facing mainly is in order to improve the presentation quality of commodity.Reduce surface roughness, improve the concrete stripping result, improve the construction quality, improve template service life, reduce use cost.The method of this post forming, technology is simple, but pind down by selected substrate product, and thickness deviation is little, heat pressing process condition harshness, integrated cost is higher.For having the raw-material producing region of base material is not good plan.One-step moulding method is then treated coldly for a long time because of the reason that has gauge, surface smoothness control difficulty, easy bubbling.

Purpose of the present invention is exactly that a kind of improved manufacture method of finishing the facing bamboo glue pattern plate of processing with one-shot forming will be provided.It can overcome above-mentioned defective, and simplifies technology, and energy savings reduces cost.

It is base stock that common lamination bamboo offset plate adopts into old bamboo, is of little use because of yield is low with getting the raw materials ready of rotary-cut mode, and how gets the raw materials ready with following routine.Promptly the bamboo section of getting is split by elder generation, removes its inside and outside ring again, and break down is split into the bamboo curtain splint bar, goes the fixed thick planing of green grass or young crops, handles through softening, makes curtain, and drying perhaps is split into thin bamboo strip and makes weaving mat as the raw material blank.Finishing material with blank and preparation gives gluing then, and assembly formalizes under high-temperature and high-pressure conditions, solidifies, and last shaping obtains product.

The manufacture method of facing bamboo glue pattern plate of the present invention is characterized in that its step comprises:

A) prepare and the preparation blank, comprise bamboo curtain splint or weaving mat, the paper of facing or woodenly singly pull, the assorted material of three-ply board;

B) blank impregnation, and play the pond pouring and do or low temperature drying the finishing material surface sizing;

C) machine on the assembly: carry out machine on the single or multiple lift assembly by designing requirement, every layer blank evenly overlaps in length and breadth, and the backing plate surface treatment is bright and clean, and installs on heating platen and decide chunk plate control thickness;

D) thermocompression forming solidifies: blank is sent into press being lower than under 80 ℃ of conditions of temperature, keep fully solidifying in 10-18 minute being warmed up under 140-150 ℃ and the pressure 35-45MPa condition, cooling is then reduced to temperature and is unloaded plate below 80 ℃ the time;

E) saw limit and back arrangement.

Manufacturing approach craft of the present invention is easy, and thickness is controlled easily, and production efficiency is higher, and production cost is lower than secondary operations technology.It has given prominence to the bright and clean processing of backing plate, the control of thickness, and coldly advance cold go out (being lower than 80 ℃), thus make one-step moulding method obtain new machine.Its applicable surface is wider in addition.Facing bamboo curtain splint bamboo glue pattern plate for example, facing weaving mat bamboo glue pattern plate, the manufacturing of facing bamboo wood composite shuttering.Particularly be adapted to production application on the great tonnage press.Product is except that also using it for anything else as the building template.

Fig. 1 is the basic block diagram of product.

Shown in the figure, the 1st, the paper finish coat is by being no less than a piece of paper Zhang Zucheng.The 2nd, Wooden veneer guarantees the burnishing surface shape of product surface with it, as if being the face lining with weaving mat, can suitably thicken or increase the paper number of plies.The 3rd, the basic structure layer, its structure comprises the bamboo curtain splint layer that odd number overlaps by texture, perhaps weaving mat layer, the perhaps assorted material of three-ply board, the perhaps mixed friendship combination between them.The diagram offset plate is two facing symmetric forms, also can only get the single face facing.

Embodiment 1:

Get the raw materials ready earlier, get 5 years old bamboos of life, the section of getting is cut open, removes interior acromere, and making thickness is the bamboo curtain splint bar of 1.5mm, and the general thickness size is selected between 1.5-4.2mm, fixed thickly goes green grass or young crops to scrape, and drying is weaved into bamboo curtain splint (available fine rule binding); Inferior bamboo curtain splint is gone into phenolic resins impregnation pond dipping evenly, and play Chi Lingan, or low temperature drying (when moisture content is higher); Again with the modified resin glue gluing of paper, Wooden veneer; Machine on the assembly is then pressed texture with the order of paper-Wooden veneer-bamboo curtain splint-bamboo curtain splint-bamboo curtain splint-Wooden veneer-paper and is intersected stackedly, suppresses on 2000 tons multidaylight press, adds 8mm around the backing plate surface grinding, backing plate and decides the chunk plate; Then, pushing press at normal temperatures, heats up and pressurizes in back in place, each layer position, and the logical constant temperature steam of heating platen is warming up to 150 ℃, is forced into 40MPa, and keeps making it in 10 minutes solidifying, and and then reduces temperature, and equitemperature goes when dropping to 75 ℃ to press and unloads plate; Send arrangement to handle at last, saw the limit, pick up the check-in storehouse, obtaining thickness is the facing bamboo curtain splint bamboo glue pattern plate of 8mm.

Embodiment 2:

Getting the customization weaving mat is blank, and blank is gone into the pond impregnation, plays Chi Lingan; Again facing being made impregnation with paper handles; Machine on the assembly then, with the order assembly of paper-weaving mat-paper, wherein weaving mat is that three layers of intersection are stacked, up and down ply of paper each constitute by three paper; Continue to press method hot-press solidifying on press of embodiment 1, condition is 140 ℃ of temperature, pressure 45MPa, and the retention time is 12 minutes (being no less than the hardening time that phenolic resin glue dispatches from the factory); Carry out post processing at last, obtaining thickness is the facing weaving mat bamboo glue pattern plate of 6mm.

Embodiment 3:

As the processing step of embodiment 1, on the assembly during machine, undertaken by the mix order of material-Wooden veneer-paper of the assorted material-bamboo curtain splint of paper-Wooden veneer-three-ply board-three-ply board.The assorted material package of the three-ply board of indication is drawn together three-ply board spelling material and leftover bits, press single or multiple lift and presses texture and interlock and stackedly all can.Obtain facing bamboo wood composite shuttering at last.

Claims (1)

1, a kind of manufacture method of facing bamboo glue pattern plate is characterized in that its step comprises:

A) preparation and preparation blank comprise bamboo curtain splint and weaving mat, the paper of facing or Wooden veneer, the assorted material of three-ply board;

B) blank impregnation, and play the pond pouring and do or low temperature drying the finishing material surface sizing;

C) machine on the assembly: carry out machine on the single or multiple lift assembly by designing requirement, every layer blank evenly overlaps in length and breadth, and the backing plate surface treatment is bright and clean, adds 8mm around it and decides the chunk plate, and install on heating platen and should decide chunk plate control thickness;

D) thermocompression forming solidifies: blank is sent into press being lower than under 80 ℃ of conditions of temperature, keep fully solidifying in 10-18 minute being warmed up under 140-150 ℃ and the pressure 35-45MPa condition, cooling is then reduced to temperature and is unloaded plate below 80 ℃ the time;

E) saw limit and post processing.

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