CN103507122A - Low-carton secondary blockboard and method for manufacturing same - Google Patents

Abstract

The invention discloses a low-carbon secondary blockboard and a manufacturing method thereof. The secondary blockboard is mainly composed of a core and upper and lower covering panels; The side material is spliced by thin square strips made of raw materials, and glued paper strips are used to paste and fix the spliced thin square strips in an "N" shape on the spliced board surface. The manufacturing steps of the secondary blockboard include: (1) preparation of thin square strips, (2) board core assembly, (3) pavement assembly, (4) pre-pressing, (5) hot pressing, (6) Edge trimming, (7) sanding and finishing treatment, (8) inspection and storage of finished products. The invention has the advantages of simple manufacturing process, low processing cost, energy saving, low carbon and environmental protection, superior comprehensive performance, inheritance of the functions of the wood-based panel (motherboard), and good economic and social benefits.

Description

A kind of low-carbon secondary joinery board and its manufacturing method

technical field

The invention belongs to the technical field of wood-based panel manufacturing in the wood processing industry, and relates to a low-carbon secondary blockboard and a manufacturing method thereof.

Background technique

With the improvement of my country's economic level and people's living standards, the market demand for wood-based panel products is increasing. At present, my country has become the world's largest producer and consumer of wood-based panels. According to statistics in 2011, my country's annual production capacity of wood-based panels has reached 209.1929 million cubic meters, ranking first in the world. The development of the wood-based panel industry is conducive to alleviating the contradiction between the supply and demand of wood in my country and saving wood resources. However, in the production process of wood-based panels, a large amount of trimmings will be produced. According to estimates, the trimmings generated in the production of wood-based panels account for about 7.4% of the total. Regarding the disposal of trimmings, currently wood-based panel companies mainly adopt the following two methods: one is to burn the trimmings as boiler fuel; ). The first processing method completely treats trimmings as waste, which has the worst utilization effect and the greatest waste of energy and raw material resources. Although the second processing method recycles the trimmed materials, it must be "returned" to the furnace for decomposition and hot pressing, which not only increases the secondary energy consumption, but also obtains low-value products, so the benefits in all aspects Neither is ideal. If the trimmings are used in a secondary way (the trimmings are directly used as raw materials for other wood-based panels without going back to the furnace for reprocessing), high-quality new wood-based panels will be obtained with extremely low energy and resource consumption (low carbon). Products that meet the requirements of a low-carbon economy will benefit the country and the people. The present invention is based on the above-mentioned idea, through the online preparation method, the wood-based panel trimmings are made into fine wood square strips, and then used as high-grade wood-based panel raw materials, so as to simplify the process, turn waste into treasure, low-carbon and energy-saving, reduce resource consumption, The purpose of improving social and economic benefits.

Blockboard is a kind of artificial board, which is widely used in furniture, decoration, building decoration and other industries. The blockboard currently used is composed of upper and lower layers of veneers and a core sandwiched between the veneers. The core of the board is mainly made of loose fir, poplar and other wood as raw materials. The log is first sawn into a certain thickness and unequal width board with a multi-blade saw, and then the board is cut into a certain thickness with a band saw or a multi-blade saw. The thin wooden square strips with different thickness and width are formed by splicing thin wooden square strips horizontally in the width direction. The blockboard manufactured by this process is more complicated, the cost is high, a large amount of wood is consumed, a large amount of leftovers are produced in the production process, and it is difficult to make the ordinary blockboard realize fireproof, moisture-proof and other functions from the process, so the functionality is poor and the grade is low. lower.

Contents of the invention

The object of the present invention is to provide a low-carbon secondary blockboard with simple manufacturing process, low processing cost, low-carbon and environmental protection and its manufacturing method.

In order to achieve the above object, the present invention adopts the following technical solutions:

A low-carbon secondary blockboard, mainly composed of a board core and upper and lower covering panels; wherein, the board core is mainly composed of thin square strips made of wood-based panel trimmings as raw materials, And use glued paper strips to paste and fix the spliced thin square strips in the shape of "N" on the spliced board surface.

The splicing mode of the thin square strips mentioned above is dislocation splicing.

The trimmings of the above-mentioned wood-based panels are trimmings of ordinary fiberboards or plywood or particle boards or flame-retardant fiberboards or moisture-proof fiberboards.

The above-mentioned covering panels are common horizontal grain veneers or impregnated veneers or melamine veneers. Covering panels can be selected according to product requirements.

A method for manufacturing the above-mentioned low-carbon secondary blockboard, comprising the following steps in turn:

(1) Preparation of thin square strips

Install the auxiliary saw blades in parallel on the outside of the original cutting saw blades of the longitudinal and transverse cutting machines of the wood-based panel production line to saw off the loose burrs on the cutting materials to obtain thin square strips with uniform texture and certain specifications;

(2) Board core assembly

Splice the thin square strips in step (1) side by side to form a board core of the required specifications, and during the splicing process, the joints between the two rows of thin square strips are not glued, and glue is only used on the spliced board surface. The note is pasted and fixed in the shape of "N";

(3) Pavement assembly

Cover the upper and lower sides of the spliced and fixed board core with a single-side glued cover panel to obtain a slab;

(4) Preload

Put the combined slab on the cold press for pre-pressing, so that the slab is initially shaped;

(5) hot pressing

Send the pre-pressed and shaped slab into the hot press for hot pressing to obtain the finished raw board;

(6) trimming

Trimming the wool board to obtain the specification board;

(7) Sanding and finishing treatment

Sand the standard board on both sides, and then use veneer or veneer paper for surface decoration treatment; if the upper and lower covering panels are made of melamine veneer panels, no surface decoration treatment is required;

(8) Inspection and storage of finished products

The secondary blockboard obtained through step (7) is inspected by conventional methods and the finished product is put into storage.

Advantages of the present invention:

1. Simple manufacturing process, low processing cost, energy saving, low carbon and environmental protection. The core of the secondary blockboard of the present invention is derived from trimmings of the wood-based board, which is automatically generated along with the production process of the wood-based board, without special processing and manufacturing, and realizes the direct utilization of waste materials. The preparation of the thin square strips is directly completed on the wood-based panel production line, which saves the special thin square strip production process and greatly simplifies the production process of the secondary blockboard of the present invention, so it is energy-saving, low-carbon and low-cost.

2. It has the inheritance of the functions of wood-based panels (motherboards), and the comprehensive performance is more superior. The board core of the secondary blockboard of the present invention is derived from the trimmings of the wood-based boards, and the physical and mechanical properties of the wood-based boards are significantly better than those of primary wood such as fir and poplar, so that the fine woodworking boards made of the trimmings of the wood-based boards The grade and performance of the woodworking board are higher; in addition, because the trimming material of the wood-based panel is directly used, the secondary blockboard can completely inherit the original functions of the trimming board (such as flame retardant, moisture-proof, etc.) ), which also greatly simplifies the processing flow of secondary blockboards that need to have corresponding functions, reduces processing costs, and has better economic benefits.

3. Save gluing consumables, environmental protection and low cost. In the present invention, when the thin square strips are used for the splicing of the board core, the process of applying glue on the seam surface of the thin square strips is not used, but the glued paper strips are used on the surface of the board after the thin square strips are spliced. The "N"-shaped pasting and fixing method not only can fix the thin square strips, but also saves a lot of glue, reduces the amount of formaldehyde emission, and has good social benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a process flow chart of the manufacturing method in the present invention.

Reference signs: 1-board core, 2-covering panel, 3-adhesive paper strip.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Example 1:

A general-purpose low-carbon secondary blockboard, mainly composed of a board core 1 and upper and lower cover panels 2; wherein, the board core 1 is mainly made of ordinary fiberboard, plywood or particleboard trimmings as raw materials The thin square strips made are spliced separately, and glued paper strips 3 are used to paste and fix the spliced thin square strips in an "N" shape on the spliced board surface. The upper and lower covering panels 2 adopt ordinary horizontal grain veneer.

Example 2:

A high-grade melamine low-carbon secondary blockboard for high-end purposes, mainly composed of a board core 1 and upper and lower cover panels 2; wherein, the board core 1 is mainly made of ordinary fiberboard, plywood or particleboard trimmings The thin square strips made of raw materials are spliced separately, and glued paper strips 3 are used to paste and fix the spliced thin square strips in an "N" shape on the spliced board surface. The upper and lower covering panels 2 adopt melamine veneer panels.

Example 3:

A high-grade flame-retardant melamine low-carbon secondary blockboard for high-end purposes, mainly composed of a core 1 and upper and lower cover panels 2; wherein, the core 1 is mainly composed of trimmings of flame-retardant fiberboard Thin square strips made of raw materials are spliced, and adhesive tape strips 3 are used to paste and fix the spliced thin square strips in an "N" shape on the spliced board surface. The splicing mode of the thin square strips is dislocation splicing. The upper and lower covering panels 2 adopt melamine veneer panels.

Example 4:

A low-carbon secondary blockboard with moisture-proof function, mainly composed of a board core 1 and upper and lower cover panels 2; wherein, the board core 1 is mainly made of moisture-proof fiberboard trimmings as raw materials Thin square strips are spliced, and tape strips 3 are used to paste and fix the spliced thin square strips in an "N" shape on the spliced board surface. The splicing method of the thin square strips is dislocation splicing. The upper and lower covering panels 2 are ordinary horizontal grain veneers impregnated with melamine-modified resin glue.

Example 5:

A high-grade melamine low-carbon secondary blockboard with moisture-proof function, mainly composed of a board core 1 and upper and lower covering panels 2; wherein, the board core 1 is mainly made of moisture-proof fiberboard trimmings as raw materials The finished thin square strips are spliced, and adhesive tape strips 3 are used on the spliced board surface to paste and fix the spliced thin square strips in an "N" shape. The splicing method of the thin square strips is dislocation splicing. The upper and lower covering panels 2 adopt melamine veneer panels.

The manufacture method of the product of above-mentioned embodiment 1～5 is as follows:

(1) Preparation of thin square strips

Install the auxiliary saw blades in parallel on the outside of the original cutting saw blades of the longitudinal and transverse cutting machines of the wood-based panel production line to saw off the loose burrs on the cutting materials to obtain thin square strips with uniform texture and certain specifications;

(2) Board core assembly

Splice the thin square strips in step (1) side by side to form a board core of the required specifications, and during the splicing process, the joints between the two rows of thin square strips are not glued, and glue is only used on the spliced board surface. The note is pasted and fixed in the shape of "N";

(3) Pavement assembly

Cover the upper and lower sides of the spliced and fixed board core with a single-side glued cover panel to obtain a slab;

(4) Preload

Put the combined slab on the cold press for pre-pressing, so that the slab is initially shaped;

(5) hot pressing

Send the pre-pressed and shaped slab into the hot press for hot pressing to obtain the finished raw board;

(6) trimming

Trimming the wool board to obtain the specification board;

(7) Sanding and finishing treatment

Sand the standard board on both sides, and then use veneer or veneer paper for surface decoration treatment; if the upper and lower covering panels are made of melamine veneer panels, no surface decoration treatment is required;

(8) Inspection and storage of finished products

The secondary blockboard obtained through step (7) is inspected by conventional methods and the finished product is put into storage.

Claims (5)

1. the secondary core-board of low-carbon (LC), is mainly comprised of plate core (1) and upper and lower cover plate (2); It is characterized in that: described plate core (1) is mainly spliced by take thin side's bar that the cutting edge material of wood-based plate makes as raw material, and on plate face splice, adopts gummed paper bar (3) to fix with the stickup of " N " font the thin side's bar having spliced.

2. the secondary core-board of low-carbon (LC) according to claim 1, is characterized in that: the mode of described thin side's bar splicing is dislocation splicing.

3. the secondary core-board of low-carbon (LC) according to claim 1 and 2, is characterized in that: the cutting edge material of described wood-based plate is the cutting edge material of general fibre plate or glued board or particieboard or flame retardant fibre board or anti-wet fiber plate.

4. the secondary core-board of low-carbon (LC) according to claim 3, is characterized in that: described cover plate (2) is common face crossing or dipping veneer or melamine decorative veneer.

5. a method for the low-carbon (LC) secondary core-board of manufacture as described in as arbitrary in claim 1-4, is characterized in that: the method comprises the following steps successively:

(1) preparation of thin side's bar

In the outside parallel connection of the former cutting edge saw blade of the longitudinal and transverse edge cutting machine of artificial board product line, add and load onto scoring blade, saw, except loose burr on cutting edge material, obtains homogeneous, specification is certain thin side's bar;

(2) plate core is assembled

Thin side's bar in step (1) is spliced into side by side to the plate core of required specification, and in splicing, the piece between thin side's bar two row is gluing not, only on the plate face having spliced, adopt gummed paper bar to paste with " N " font fixing;

(3) assembly of mating formation

Cover plate in the Ban Xin above and below of splicing and fixing coated with single spreading, obtains slab;

(4) precompressed

The slab combining is placed on cold press and carries out precompressed, slab is tentatively formalized;

(5) hot pressing

Slab after precompressed setting is sent in hot press, carried out hot pressing, obtain finished product hair plates;

(6) cutting edge

Hair plates is carried out to cutting edge, obtain dimension board;

(7) sanding and facing are processed

Dimension board is carried out to two-sided sanding, then with veneer or finishing paper, carry out incrustation processing; If upper and lower cover plate adopts melamine decorative veneer, without carrying out incrustation processing;

(8) check and finished product warehouse-in

The secondary core-board obtaining through step (7) processing is checked and finished product warehouse-in according to a conventional method.

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