CN113843871B

CN113843871B - Preparation method of high-strength environment-friendly ecological plate

Info

Publication number: CN113843871B
Application number: CN202110896213.7A
Authority: CN
Inventors: 刘黎湘
Original assignee: Chengdu Guohao New Materials Co ltd
Current assignee: Chengdu Guohao New Materials Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-09-06
Anticipated expiration: 2041-08-05
Also published as: CN113843871A

Abstract

The invention discloses a preparation method of a high-strength environment-friendly ecological plate, which belongs to the technical field of ecological plates, wherein filling powder is spread on the surface of a core plate, on one hand, the filling powder is used for primarily absorbing water on the surface of the core plate, on the other hand, the filling powder is used for improving the flatness by filling burr grooves on the surface of the core plate, after being coated with an adhesive, the core plate can be dispersed, and simultaneously, the adhesive effect is effectively improved when the core plate is compounded with a balance plate, and the filling powder filled on the surface of the core plate can improve the strength of a joint part and slowly release prestress in an ecological part, so that the overall strength and hardness of the ecological plate are improved.

Description

Preparation method of high-strength environment-friendly ecological plate

Technical Field

The invention relates to the technical field of ecological plates, in particular to a preparation method of a high-strength environment-friendly ecological plate.

Background

The ecological plate has various calling laws in the industry, and common calling laws include a paint-free plate and a melamine plate. The original name is melamine board, which is called paint-free board in the industry and is also called ecological board, however, the ecological board is too general, and many boards which achieve ecological environment protection can also be called ecological board.

Melamine is one of the resin adhesives for manufacturing ecological boards, paper with different colors or textures is soaked in resin, dried to a certain curing degree, paved on the surface of a shaving board, a medium density fiberboard or a hard fiberboard and hot pressed to form a decorative board, and the standard name of the melamine impregnated paper-faced artificial board is melamine impregnated paper-faced artificial board, which is called melamine board as a part of the facing components of the melamine board.

At present, the surface of the core plate in the ecological plate is rough, the burr slot is many, and the thickness deviation influences surface flatness greatly, consequently when sticky complex, leads to the inhomogeneous production space of gluing agent distribution easily, not only leads to gluing agent bonding effect to reduce easily, and moisture in the panel is heated to evaporate when hot pressing simultaneously and is filled in the space after the moisture, and then causes the hollowing phenomenon, leads to the ecological plate intensity low easy damage.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a preparation method of a high-strength environment-friendly ecological plate, which is characterized in that filling powder is spread on the surface of a core plate, so that the filling powder is utilized to primarily absorb moisture on the surface of the core plate, the burr grooves on the surface of the core plate are filled to improve the flatness, the core plate can be dispersed after being coated with an adhesive, the adhesion effect is effectively improved when the core plate is compounded with a balance plate, the strength of a joint part can be improved while the penetration of moisture and humidity is blocked by the filling powder filled on the surface of the core plate, and the prestress in an ecological part is slowly released, so that the overall strength and hardness of the ecological plate are improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A preparation method of a high-strength environment-friendly ecological plate comprises the following steps:

s1, placing the core plate on a pretreatment frame, and then spreading a layer of filling powder on the core plate;

s2, performing falling impact on the core plate through the pretreatment rack to promote the filler powder to be tightly combined with the core plate;

s3, turning over the core plate to perform the same treatment on the other surface of the core plate, and respectively coating adhesive on the two surfaces of the core plate after the pretreatment is finished;

s4, taking two balance plates to be respectively adhered to two sides of the core plate, and taking two facing layers to be respectively adhered to the outer surfaces of the two balance plates after finishing the adhesion;

and S5, finally carrying out hot press molding at the hot press temperature of 105 ℃, under the pressure of 3-4MPa for 20-30min to obtain the high-strength environment-friendly ecological plate.

Further, the pretreatment rack comprises an underframe, a top plate is fixedly mounted at the upper end of the underframe, a pair of placing side plates is fixedly mounted in the middle of the underframe, a core plate is arranged on the upper sides of the placing side plates, a plurality of uniformly distributed flexible cords are fixedly connected to the lower end of the top plate, a single impact table is fixedly connected to the lower end of the flexible cords, a powder collecting groove is fixedly mounted at the upper end of the underframe and is located at the lower side of the core plate, the single impact table is adsorbed and lifted through a magnetic field, then the core plate is arranged on the upper sides of the placing side plates, and after filling powder is spread and played, the single impact table can naturally fall under the action of gravity after the magnetic field is canceled, so that the filling powder on the core plate is impacted and extruded, and is fully combined with burr grooves on the surface of the core plate.

Further, strike single platform including magnetism inhale the end, expand a face end, oppression end and contact surface end, magnetism inhale the end, expand a face end and oppress end fixed connection in proper order, contact surface end fixed connection is in oppression end lower extreme opening part and seal it, and magnetism inhales the end and can be attracted by magnetic field, expands a face end and plays the transition and enlarges the effect of coverage area, and the contact surface end is direct to contact with the packing powder and extrudees, then forces the oppression end to receive the oppression to release inside hot-air or gluing agent that exists.

Further, the contact surface end adopts flexible material to make, a plurality of evenly distributed's micropore has been seted up on the contact surface end, and the micropore is closed form under the normal condition, can guarantee under the normal condition that hot-air or gluing agent are difficult for appearing leaking the phenomenon, and the micropore is opened after contacting the extrusion with filling powder, and inside hot-air or gluing agent release and realize the pertinent cover to improve the drying effect to filling powder, perhaps guarantee the gluing agent on the core fully dispersed.

Furthermore, common runners are formed in the flexible cords, the magnetic suction end and the face expanding end, the top plate is of a hollow structure, and the top plate is communicated with the flexible cords.

Further, let in hot-air to the roof in the step S2, and strike single falling impact action number of times and be no less than 10 times, hot-air not only can assist the contact surface end and carry out the secondary extrusion to filling powder to improve the combination effect, and can dry the filling powder after the moisture absorption.

Furthermore, in the step S3, an adhesive is introduced into the top plate, the number of times of the falling impact action impacting a single unit is 1, the adhesive can be fully combined with the filling powder after being extruded and released, and the adhesive can be actively dispersed under the action of pressing impacting the single unit, so that the uniform distribution is ensured, and the raw materials are effectively saved.

Furthermore, the core board is formed by splicing fir core strips, the balance board is a poplar veneer or a eucalyptus veneer, and the veneer layer is formed by dipping, drying and curing melamine dipped adhesive film paper on two sides.

Furthermore, the filling powder is a mixture of bamboo powder and high-molecular water-absorbent resin powder, the mass mixing ratio is 2:1, the filling powder has high strength to improve the impact buffering effect, and meanwhile, the filling powder has extremely excellent water absorption and water retention, and can reduce water or enable the water to interfere with an ecological plate to a great extent.

Furthermore, both surfaces of the core plate are not treated, only one surface of the balance plate is polished, and the polished surface of the balance plate is combined with the finish coat, so that the pretreatment process difficulty can be reduced, the preparation efficiency can be improved, meanwhile, burr grooves on the surface of the plate can be reversely utilized to be fully combined with the filling powder, and the hardness of the plate can be improved and the composite effect can be improved.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through the mode of spilling the filling powder on the core surface, on the one hand, utilize the filling powder to carry out preliminary absorption to the moisture on core surface, on the other hand improves the roughness through its burr slot of filling the surface, not only can help it to disperse after scribbling the sizing agent, simultaneously when compound with the balance plate, effectively improve the adhesion effect, and fill in the filling powder on core surface, when stopping moisture and moisture infiltration, can improve the intensity of junction, carry out the slowly-releasing to the prestressing force of ecological interior, thereby make ecological plate bulk strength and hardness rise, compare with current ecological plate, the intensity of the invention is higher, life is more of a specified duration.

(2) In this scheme, adsorb the lifting through magnetic field and strike the list, then place the core in a pair of side plate upside of placing, spread and spill and play the filling powder after, cancel magnetic field and strike the list and just can hang down naturally under the action of gravity, strike the extrusion to the filling powder on the core, force it fully to combine with the burr slot on core plate surface.

(3) Impact the single platform and inhale the end including magnetism, expand the face end, oppression end and contact surface end, magnetism is inhaled the end, is expanded face end and oppression end fixed connection in proper order, and contact surface end fixed connection is in oppression end lower extreme opening part and is sealed it, and magnetism inhales the end and can be attracted by magnetic field, expands the face end and plays the effect that the transition enlarges the coverage area, and the contact surface end is direct to contact the extrusion with filling the powder, then forces the oppression end to receive the oppression, and release inside hot air or gluing agent that exists.

(4) The contact surface end is made of flexible materials, a plurality of uniformly distributed micropores are formed in the contact surface end, the micropores are closed under a normal state, hot air or adhesives can be guaranteed to be not prone to leakage under a normal state, the micropores are opened after the hot air or adhesives are in contact with the filling powder and extruded, and the internal hot air or adhesives are released to achieve targeted covering, so that the drying effect of the filling powder is improved, or the adhesives are fully dispersed on the core plate.

(5) The filling powder is a mixture of bamboo powder and high-molecular water-absorbent resin powder, the mass mixing ratio is 2:1, the filling powder has high strength to improve the impact buffering effect, and has extremely excellent water absorption and water retention, and the water content can be greatly reduced or the interference of the filling powder on an ecological plate can be reduced.

(6) The two surfaces of the core plate are not treated, only one surface of the balance plate is polished, and the polished surface of the balance plate is combined with the finish coat, so that the pretreatment process difficulty can be reduced, the preparation efficiency can be improved, meanwhile, burr grooves on the surface of the plate can be utilized to be fully combined with the filling powder, and the hardness of the plate can be improved and the composite effect can be improved.

Drawings

FIG. 1 is a schematic flow diagram of the present invention;

FIG. 2 is a schematic flow diagram of the prior art;

FIG. 3 is a schematic structural view of the ecological plate of the present invention;

FIG. 4 is a schematic view of the pretreatment rack of the present invention;

FIG. 5 is a schematic structural view of an impact unit filled with hot air in a normal state according to the present invention;

FIG. 6 is a schematic view of the impact single-stage filling hot air extrusion configuration of the present invention;

FIG. 7 is a schematic structural view of an impact single filling adhesive in a normal state according to the present invention;

FIG. 8 is a schematic structural view of a balance plate and a core plate of the present invention;

FIG. 9 is a schematic structural diagram of an existing ecological plate when hollowing occurs in hot pressing;

fig. 10 is a schematic view of the structure of the bonding face portion of the present invention.

The reference numbers in the figures illustrate:

the device comprises a base frame 1, a placing side plate 2, a top plate 3, a powder collecting groove 4, a flexible cord 5, a single impact table 6, a magnetic attraction end 61, a surface expansion end 62, a pressing end 63 and a contact surface end 64.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "fitted/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-3, a method for manufacturing a high-strength eco-friendly board includes the following steps:

s2, performing falling impact on the core plate through the pretreatment frame to enable the filling powder to be tightly combined with the core plate;

The core board is formed by splicing fir core strips, the balance board is a poplar veneer or a eucalyptus veneer, and the veneer layer is formed by dipping, drying and curing melamine impregnated adhesive film paper on two sides.

The filling powder is a mixture of bamboo powder and high-molecular water-absorbing resin powder, the mass mixing ratio is 2:1, the filling powder has high strength to improve the impact buffering effect, and has extremely excellent water absorption and water retention, and the water content can be greatly reduced or the interference of the filling powder on an ecological plate can be reduced.

Referring to fig. 4, the pretreatment rack includes a bottom frame 1, a top plate 3 is fixedly installed at the upper end of the bottom frame 1, a pair of side plates 2 is fixedly installed at the middle part of the bottom frame 1, the core plate is arranged on the upper sides of the pair of side plates 2, the lower end of the top plate 3 is fixedly connected with a plurality of flexible ropes 5 which are uniformly distributed, the lower end of each flexible rope 5 is fixedly connected with an impact single table 6, the upper end of the underframe 1 is fixedly provided with a powder collecting groove 4, the powder collecting groove 4 is arranged on the lower side of the core plate, the impact single table 6 is lifted through magnetic field adsorption, then the core board is arranged at the upper sides of the pair of side boards 2, after the filling powder is spread and sprinkled, the single machine 6 can naturally fall under the action of gravity after the magnetic field is removed to impact, impact extrusion is carried out on the filling powder on the core plate to force the filling powder to be fully combined with the burr grooves on the surface of the core plate, after the impact of the filling powder on the single surface of the core plate is finished, the operation is repeated by turning over, and the redundant filling powder on the surface subjected to impact can fall onto the powder collecting groove 4 to be collected.

Referring to fig. 5-7, the single impact table 6 includes a magnetic attraction end 61, an expanding end 62, a pressing end 63, and a contact surface end 64, the magnetic attraction end 61, the expanding end 62, and the pressing end 63 are sequentially and fixedly connected, the contact surface end 64 is fixedly connected to and seals the lower opening of the pressing end 63, the magnetic attraction end 61 can be attracted by a magnetic field, the expanding end 62 plays a role of transitionally expanding the coverage area, the contact surface end 64 directly contacts and presses the filling powder, and then the pressing end 63 is forced to be pressed, and hot air or adhesive existing inside is released.

The contact surface end 64 is made of flexible materials, a plurality of uniformly distributed micropores are formed in the contact surface end 64, the micropores are closed under a normal state, the phenomenon that hot air or adhesives are not prone to leakage can be guaranteed under the normal state, the micropores are opened after the hot air or the adhesives are in contact with the filling powder and extruded, and the internal hot air or the adhesives are released to achieve targeted covering, so that the drying effect of the filling powder is improved, or the adhesives are fully dispersed on the core plate.

Common flow channels are formed in the flexible cord 5, the magnetic suction end 61 and the face expanding end 62, the top plate 3 is of a hollow structure, and the top plate 3 is communicated with the flexible cords 5.

In step S2, hot air is introduced into the top plate 3, and the number of times of the falling impact action of the impact unit 6 is not less than 10 times, and the hot air can assist the contact surface end 64 in performing secondary extrusion on the filler powder, thereby improving the bonding effect and drying the filler powder after moisture absorption.

In the step S3, the adhesive is introduced into the top plate 3, and the number of times of the falling impact action of the impact unit 6 is 1, after the adhesive is released by extrusion, the adhesive can be fully combined with the filler powder, and meanwhile, under the pressing action of the impact unit 6, the adhesive can be actively dispersed, so that the adhesive is uniformly distributed, and the raw materials are effectively saved.

Referring to fig. 8, both surfaces of the core plate are not treated, only one surface of the balance plate is polished, and the polished surface is combined with the facing layer, so that the pretreatment process difficulty can be reduced, the preparation efficiency can be improved, and simultaneously the burr grooves on the surface of the plate can be utilized to be fully combined with the filling powder, which can improve the hardness of the plate and improve the composite effect.

Referring to fig. 9-10, in the present scheme, the filling powder is spread on the surface of the core plate, on one hand, the filling powder is used to primarily absorb the moisture on the surface of the core plate, on the other hand, the filling powder is used to fill the burr grooves on the surface of the core plate to improve the flatness, the spreading of the sizing adhesive is facilitated, and the bonding effect is effectively improved when the core plate is compounded with the balance plate.

The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.

Claims

1. A preparation method of a high-strength environment-friendly ecological plate is characterized by comprising the following steps: the method comprises the following steps:

s5, finally, carrying out hot press molding at 105 ℃ under 3-4MPa for 20-30min to obtain the high-strength environment-friendly ecological plate;

the pretreatment frame comprises an underframe (1), a top plate (3) is fixedly mounted at the upper end of the underframe (1), a pair of placing side plates (2) is fixedly mounted at the middle part of the underframe (1), a core plate is arranged on the upper sides of the pair of placing side plates (2), a plurality of uniformly distributed flexible cords (5) are fixedly connected at the lower end of the top plate (3), an impact single table (6) is fixedly connected at the lower end of each flexible cord (5), a powder collecting groove (4) is fixedly mounted at the upper end of the underframe (1), and the powder collecting groove (4) is positioned on the lower side of the core plate; the single impact table (6) comprises a magnetic suction end (61), a face expanding end (62), a pressing end (63) and a contact surface end (64), the magnetic suction end (61), the face expanding end (62) and the pressing end (63) are fixedly connected in sequence, and the contact surface end (64) is fixedly connected to an opening at the lower end of the pressing end (63) and seals the opening; the contact surface end (64) is made of flexible materials, a plurality of micropores which are uniformly distributed are formed in the contact surface end (64), and the micropores are closed under a normal state; the flexible cord (5), the magnetic suction end (61) and the face expanding end (62) are all provided with a common flow channel, the top plate (3) is of a hollow structure, and the top plate (3) is communicated with the flexible cords (5); in the step S2, hot air is introduced into the top plate (3), and the times of the falling impact action of the impact unit (6) are not less than 10.

2. The method for preparing the high-strength environment-friendly ecological plate according to claim 1, characterized in that: in the step S3, an adhesive is introduced into the top plate (3), and the number of times of the falling impact action of the impact unit (6) is 1.

3. The method for preparing a high-strength environment-friendly ecological plate according to claim 1, characterized in that: the core board is formed by splicing fir core strips, the balance board is a poplar veneer or a eucalyptus veneer, and the veneer layer is formed by dipping, drying and curing melamine impregnated bond paper on two sides.

4. The method for preparing the high-strength environment-friendly ecological plate according to claim 1, characterized in that: the filling powder is a mixture of bamboo powder and high-molecular water-absorbent resin powder, and the mass mixing ratio is 2: 1.

5. The method for preparing the high-strength environment-friendly ecological plate according to claim 1, characterized in that: the two surfaces of the core plate are not treated, only one surface of the balance plate is polished, and the polished surface is combined with the finish coat.