CN116442342A

CN116442342A - Green environment-friendly film pressed decorative solid wood composite floor for building and production process and equipment thereof

Info

Publication number: CN116442342A
Application number: CN202310287100.6A
Authority: CN
Inventors: 蒋卫; 喻立春; 贾伟; 张瑞霞
Original assignee: Suzhou Davie Wood Industry Co ltd
Current assignee: Suzhou Davie Wood Industry Co ltd
Priority date: 2023-03-23
Filing date: 2023-03-23
Publication date: 2023-07-18

Abstract

The invention discloses a green environment-friendly film pressed and faced solid wood composite floor for building, a production process and a production device thereof, wherein the film pressed and faced solid wood composite floor is formed by laminating a base material and a facing film; the production process comprises the working procedures of raw material inspection, substrate sheet inspection, laminating, curing, plate cutting, secondary curing, slotting, roller chamfering and wax sealing and packaging, wherein the production equipment comprises production line roller frequency flowing equipment, a dust removing and adsorbing machine I, a constant temperature box I, a gluing machine, a constant temperature box II, a corona machine, a laminating machine, a sawing machine, a four-side planing machine, a double-end milling machine, a chamfering roller coater, a wax sealing machine, a packaging machine, a film cutting machine and a beam sealing machine which are sequentially arranged along the direction of a production line. Under the condition that the production quality and the production efficiency of the product are improved, the invention optimizes the setting of working procedures, such as dust, wood dust and the like, can be effectively controlled, meets the environmental protection requirement of factories, and simultaneously can greatly reduce the energy consumption on the premise of ensuring the quality of the product for the optimized setting of process parameters such as temperature, time and the like.

Description

Green environment-friendly film pressed decorative solid wood composite floor for building and production process and equipment thereof

Technical Field

The invention relates to the technical field of solid wood composite floor production, in particular to a green and environment-friendly building green environment-friendly film laminated veneer solid wood composite floor, and a production process and equipment thereof.

Background

In recent years, the sales volume of the Chinese floor keeps a small growing trend, and according to incomplete statistics of the Chinese forest industry association, the total sales volume of the floor products of China with a certain scale of enterprises in 2021 is about 9.17 square meters, wherein the sales volume of the stone floor is 4.25 square meters and accounts for 46.3 percent of the total sales volume of the floor; the sales volume of the wood-bamboo floor is 4.13 square meters, and the wood-bamboo floor accounts for 45.0 percent. The wood floor products comprise various varieties of solid wood floors, reinforced wood floors, solid wood composite floors, bamboo floors, cork floors and the like, wherein the reinforced floors are still the largest sales varieties, but the sales ratio is continuously reduced, the 2021 year ratio is 47.2%, the solid wood composite floors are 35.7%, the solid wood floors are 9.4%, the bamboo floors are 6.3%, and the solid wood composite floors are improved from 29.9% in 2019 to 35.7% in 2021. Along with the continuous improvement of resident living standard, high-end demand begins to release, and the consumer is continuously promoted to the demand in the aspect of health, environment, design and functional use of floor, synthesizes market demand, and present wood composite floor, wood floor are because of the scarcity of log, and face quality is good and uneven, and surface wear resistance is outstanding, and surface finish, environmental protection index have failed to satisfy consumer individuation demand.

The quality of the board surface is good and bad: the plate surface has the conditions of cracking, glue opening, residual glue, residual paint and the like, and also has the conditions of stain, bubbling, bulge, partial film deficiency, corner defect, tongue defect and the like.

The surface wear resistance is not remarkably shown as follows: the surface abrasion resistance (g/100 r) test result is poor and less than 1500r, the surface is easy to damage, scratches and pits are easy to leave when the chair caster is tested, and the damage such as layering, seam split and the like can occur.

The surface paint has poor decorative effect, which is expressed as follows: the paint film adhesion is poor, there are many paint film peels at the cut-mark intersections, and the paint film is allowed to peel off intermittently in a large amount along the cut-mark.

The environment-friendly index is not up to standard and is expressed as follows: the existing composite solid wood floor production process has the defects of large electricity consumption and large energy consumption, and the existing composite solid wood floor production process firstly performs cold pressing and then hot pressing, needs electricity or natural gas to heat conduction oil to 200-220 ℃ to press wood veneer and a base material, the energy consumption of the process reaches about 2.5 ℃ per square, and the melamine modified urea resin adhesive used in the process is environment-friendly and still contains a small part of aldehyde volatile matters.

In view of this, how to solve the problems of good quality of the board surface, unobvious surface wear resistance, poor finish paint decoration effect, insufficient green environmental protection and the like in the existing solid wood composite floor production technology becomes the subject to be researched and solved by the invention.

Disclosure of Invention

The invention aims to provide a green environment-friendly film laminated veneer lumber composite floor for building, and a production process and production equipment thereof. In order to achieve the above object, the first aspect of the present invention adopts the following technical scheme: the production process of the green environment-friendly film laminated veneer lumber composite floor for the building is characterized by comprising the following steps of:

step A: raw material inspection, namely inspecting raw materials of a base material, a decorative film and a PUR hot melt adhesive, and selecting qualified raw materials;

and (B) working procedure: selecting a whole core substrate with 8-12% of water content, standard size, qualified appearance and qualified formaldehyde content for sheet inspection, and uniformly sanding and fixing the thickness of the substrate;

and (C) working procedure: coating, namely heating and melting the PUR hot melt adhesive, starting an incubator to keep the coating station at a constant temperature,

coating the surface of the base material with a coating machine, and coating the decorative film on the surface of the base material, wherein the process flow comprises the following steps:

step C1:2, heating the PUR hot melt adhesive to dissolve the PUR hot melt adhesive and ensure that the adhesive coating temperature of the rubber roller reaches a set temperature, wherein the PUR hot melt adhesive temperature and the adhesive coating temperature are 160-180 ℃;

step C2: opening the constant temperature box, and setting different constant temperature according to different seasons; the constant temperature comprises 45-55 ℃ in summer and 75-85 ℃ in winter;

Step C3: after the PUR hot melt adhesive and the constant temperature box reach the set temperature, starting the flow frequency of the production line;

step C4: the decorating film to be pasted is arranged on the working frame;

step C5: the substrate faces upwards, the substrate is placed on a production line for flowing frequency, and the substrates are placed in sequence along the side edges of the positioning pieces in a tight and seamless manner;

step C6: the substrate passes through a dust removing and adsorbing machine through a production line in a flow frequency manner to adsorb and clean foreign matters on the surface of the substrate;

step C7: the substrate flows through an incubator through a production line in a frequency-controlled manner, and the surface temperature of the substrate is detected to enable the surface temperature of the substrate to reach 25-35 ℃;

step C8: the substrate is passed through a gumming machine, PUR hot melt adhesive is uniformly coated on the upper surface of the substrate to form a adhesive surface layer, and the coating amount of the adhesive surface layer is 70-100 g/square meter;

step C9: the substrate passes through the constant temperature box again, so that the temperature of the adhesive surface layer on the upper surface of the substrate is constant, and the surface colloid is ensured to be flat and uniform;

step C10: before the decorative film passes through the coating machine, the back surface of the decorative film is polished by high-pressure corona and then coated on the adhesive surface layer of the base material;

step C11: sequentially carrying out gravity lamination on the bonded solid wood composite floor by a gravity roller to enable the surface of the solid wood composite floor to be flat;

step C12: stacking the pressed solid wood composite floor surface against the surface in order;

Step C13: orderly stacking the stacked plates together, and carrying out gravity lamination;

and step D: keeping the solid wood composite floor for more than 48 hours, and eliminating the internal stress of the solid wood composite floor;

step E: trimming and cutting the well-maintained solid wood composite floor to enable the dimension of the solid wood composite floor to meet the requirements, and then stacking and marking the boards;

and (F) working procedure: secondary health preserving, namely standing and health preserving in a natural environment, wherein the health preserving temperature is 15-35 ℃, the humidity is 50-80%, and the health preserving time is more than 48 hours;

step G: slotting, namely slotting the solid wood composite floor subjected to secondary curing, measuring and trial assembly confirming during slotting, stacking the solid wood composite floor in order after slotting is completed, and marking products;

and (2) a step H of: carrying out roller coating of chamfer water paint on the grooved solid wood composite floor product, after the color of the water paint is regulated, opening a heating lamp groove, and carrying out roller coating of the water paint on the chamfer of the solid wood composite floor product by using a chamfer roller coater and drying and curing;

step I: and (3) wax sealing and packaging, namely wax sealing the periphery of the solid wood composite floor product, and packaging and bundling the solid wood composite floor product with the wax sealed by using a paper box and a bundling sealing film.

In order to achieve the above object, the second aspect of the present invention adopts the following technical scheme: the utility model provides a green membrane veneer laminated wood composite floor for building, wherein:

the membrane pressed and faced solid wood composite floor is produced by adopting the production process of the green environment-friendly membrane pressed and faced solid wood composite floor for building;

the film laminated veneer lumber composite floor comprises a base material positioned below, a glue surface layer positioned above the base material and a veneer film covered and adhered above the glue surface layer;

the facing film is formed by laminating all the layers at 110-130 ℃ from bottom to top, and a high polymer film with the thickness of 0.27-0.3 mm is formed.

In order to achieve the above object, the third aspect of the present invention adopts the following technical scheme: the invention provides a production device of a green environment-friendly film laminated veneer lumber composite floor for a building, which is used for the production of the production process of the green environment-friendly film laminated veneer lumber composite floor for the building, wherein:

the production equipment of the solid wood composite floor comprises production line roller frequency flowing equipment, a dust removing and adsorbing machine I, an incubator I, a glue spreader, an incubator II, a corona machine, a laminating machine, a sawing machine, a four-side planing machine, a double-end milling machine, a chamfering roller coater, a wax sealing machine, a packaging machine, a film cutting machine and a beam sealing machine which are sequentially arranged along the direction of the production line.

The content of the present invention is explained as follows:

1. according to the technical scheme, the film-pressed veneer solid wood composite floor prepared by the production process comprises a veneer film and a substrate, wherein the veneer film is adhered to the top surface of the substrate, and the veneer film and the substrate are fixedly combined into a whole through PUR hot melt adhesive, so that the appearance defect of the veneer layer is overcome; in the production process, the used raw materials are environment-friendly products, and the preparation process and the use process of the products do not harm the environment and human bodies. The PUR hot melt adhesive does not contain any organic solvent, aldehyde and solid content is 100%, and is environment-friendly; the facing film can be degraded when recovered, only releases water and carbon dioxide when burned, and does not generate any toxic gas; the decorative film has good formability, low price, high PUR hot melt adhesive curing speed and high bonding strength, can realize large-scale and continuous production, and has high production efficiency; the surface antibacterial coating layer formed on the surface of the floor can inhibit the propagation of surface bacteria, and the antibacterial (staphylococcus aureus and escherichia coli) effect reaches 99.9%; the wear-resisting performance is superior to that of the paint-decorated solid wood composite floor and the paint-decorated solid wood floor, and the wear-resisting revolution is more than or equal to 2500; meanwhile, all links carried out in the production process can optimize the setting of working procedures under the condition that the production quality and the production efficiency of products are improved, compared with the existing painted solid wood composite floor or impregnated paper layer solid wood composite floor, the circulation of raw materials and semi-finished products between all working procedures is more reasonable, surface foreign matters on the surface of a base material and surface foreign matters of solid wood composite floor products, such as dust, wood dust and the like, can be effectively controlled, the environmental protection requirement of factories is met, and meanwhile, the energy consumption is greatly reduced on the premise of ensuring the quality of products for the optimized setting of process parameters such as temperature, time and the like.

2. In the technical scheme, the facing film is a polymer film and sequentially comprises a material film layer, a printing wood grain layer, a wear-resistant layer, a UV paint layer, a surface antibacterial paint layer and a surface concave grain layer from bottom to top, wherein the facing film is formed by laminating the layers at 110-130 ℃ to form the polymer film with the thickness of 0.27-0.3 mm; the PUR hot melt adhesive is a PUR hot melt adhesive. The polymer film is very green and environment-friendly, can be degraded during recycling, only releases water and carbon dioxide during combustion, does not generate any toxic gas, is made of PVC or PP materials, is more firmly bonded with the PUR hot melt adhesive, and does not delaminate after being coated with the solid wood composite floor product.

3. In the above technical solution, in the step E of cutting the board, the process flow includes:

step E1: trimming the surplus facing film on the periphery of the solid wood composite floor after the health maintenance;

step E2: according to the product specification and buckling requirements on the production instruction sheet, the saw blade spacing of the multi-blade saw on the saw cutting machine is adjusted, so that the length and the width of each single-blade plate meet the production instruction sheet requirements;

step E3: the size of 1 solid wood composite floor is confirmed by trial sawing, and the machining precision and the appearance quality of the composite floor are confirmed by sawing at least 2 Zhang Shimu, so that the composite floor can be produced in batch;

Step E4: exchanging the solid wood composite floor, and placing the large edge of the mother groove of the solid wood composite floor at the outermost side;

step E5: checking whether the surface of the solid wood composite floor has abnormal appearance and other conditions, and taking out the solid wood composite floor if the surface of the solid wood composite floor is judged to be the abnormal appearance; simultaneously cleaning residues on the surface of the solid wood composite floor;

step E6: marking the large edge of the mother groove of the solid wood composite floor after the boards are orderly stacked;

step E7: and (5) separately stacking and marking the products needing edge adjustment.

Through implementation of each flow of the board cutting in the process E, the smooth board surface of the solid wood composite floor is ensured, no crush injury and depression are caused, peeling and layering are not caused on the periphery, saw tooth damage is not caused on the front side and the back side, the size meets the requirements, good semi-finished product support is provided for the subsequent process, and the production efficiency and the production quality are improved.

4. In the technical scheme, in the grooving of the procedure G, the technological process comprises the following steps:

step G1: checking whether the product to be grooved is consistent with the production instruction sheet according to the production instruction sheet; checking whether the product model of the carton sticking strip and the code spraying machine is consistent with the production instruction;

step G2: and adjusting the width of the four-side planing and double-end milling equipment according to the specification of the instruction sheet. Firstly testing two slotting sheets and measuring the size, and confirming that the height difference and the notch tightness index are correct, so that the slotting machine can be produced in batch; during slotting, a central cloth bag dust removing device is used for dust absorption;

Step G3: checking the surface of each solid wood composite floor product, and taking out and placing the solid wood composite floor products with abnormal appearance; simultaneously removing residues at the mother groove end of the long side of the solid wood composite floor;

step G4: when the transfer boards are stacked, stacking the solid wood composite floor products in order in the same direction, and cleaning residues on the surfaces of the solid wood composite floors; checking the long-side tenon edge of the solid wood composite floor product and checking whether the base material has layering or not;

step G5: each product is measured and tested to be assembled and confirmed during slotting;

step G6: and (5) after the products are stacked in order, marking the products, and checking whether the appearance of the tongue-and-groove of the solid wood composite floor is split and layered.

Through implementation of each flow of the grooving in the process G, grooving operation of the solid wood composite floor product is completed, the flow is reasonable, the grooving process is controllable, risks of cracking of two sides of the periphery of a tongue-and-groove of the solid wood composite floor product, scratches of a board surface, greasy dirt, dirty and damaged tenons and the like are avoided, the product quality is improved, and in the grooving process, a central cloth bag dust removing device is assembled, so that dust emission is effectively controlled.

5. In the technical scheme, in the process H roller chamfering, the process flow comprises the following steps:

Step H1: checking whether the solid wood composite floor product to be chamfered is consistent with the production instruction list according to the production instruction list;

step H2: calibrating standard colors of the templates, and carrying out water paint color matching according to the templates;

step H3: taking a product offline plate to be rolled, starting a roller chamfering machine, adjusting the angle and the equipment speed of a roller coating oil wheel, and pouring the adjusted water paint into an oil groove;

step H4: starting heating equipment, and checking that the lamp tubes are all started normally;

step H5: taking a product to be rolled off-line plate for test production, checking whether the roll coating water paint, the color and the effect meet the process requirements, and confirming that mass production can be realized after no error;

step H6: placing and stacking by a plate placing person, and chamfering by batch rollers;

step H7: checking the chamfering quality of the roller by a checking staff, and taking out the product which is not rolled in place and stacking the product; carrying out classification treatment on abnormal plate surfaces such as crush injury, scratch, breakage, foaming and layering;

step H8: the solid wood composite floor products are orderly stacked in the same direction, so that the clean and tidy paint-free residues on the surfaces of the boards are ensured; meanwhile, checking the long-side tenon edge of the product, and checking whether the base material has layering or not;

step H9: the stacking is neat and safe, a plurality of layers are molded into one layer, and product identification is made after the stacking.

Through implementation of the processes of chamfering the rolls in the process H, the chamfering color of the film pressed veneer solid wood composite floor is consistent with the surface layer color, the adhesive force is qualified, the chamfering is free from roller leakage or paint piling, and the periphery of the plate surface, the plate back and the notch are clean and free from paint pollution.

6. In the technical scheme, in the process I wax sealing package, the process flow comprises the following steps:

step I1: setting timed automatic heating temperatures of a wax sealing machine, a film cutting machine and a beam sealing machine, wherein the heating temperature of the wax sealing machine is 110-130 ℃, the heating temperature of the film cutting machine is 100-110 ℃, and the heating temperature of the beam sealing machine is 200-210 ℃;

step I2: checking and adding wax in a storage box of a heating wax sealing machine, and proportioning the wax proportions: 25kg of aqueous wax: 12kg of solid wax;

step I3: starting a wax sealing machine, a film cutting machine and a beam sealing machine, checking each temperature control device, and checking the normal operation of the machine devices;

step I4: according to the specifications of the products to be produced, the wax sealing module and the wax sealing speed are adjusted, and the consistency of the corresponding cartons and labels is checked;

step I5: after the heating temperatures of the wax sealing machine, the film cutting machine and the beam sealing machine reach set values, firstly placing 10 plates, checking the periphery of the plates after wax sealing, and uniformly sealing the wax and then producing in batch;

Step I6: after the boards are normal, formally put into production in batches, and the boards of the solid wood composite floors are upwards placed into an automatic board feeding groove;

step I7: carrying out full inspection on the product again, and picking and placing the plates which do not meet the product requirements;

step I8: every N pieces of products are packaged, N is more than or equal to 5, and after passing through the beam sealing machine, the beam sealing film is complete and beautiful, and the beam sealing film is placed in a carriage to be stacked in order.

By implementing the processes of wax sealing in the step I, the periphery of the film laminated veneer solid wood composite floor is in place, no shortage and leakage or accumulation are caused, no wax printing or accumulation is caused on the front surface, and the packaging is attractive, and the beam sealing is free from damage and defect.

7. In the above technical solution, in the gravity pressing step performed in step C13, any one of the following modes is sampled:

placing the stacked solid wood composite floor products into a cold press, wherein the pressure of the cold press is set to be 3-5 MPa, and the time is more than 30 minutes, so as to perform gravity pressing;

or placing the stacked solid wood composite floor products on the plate collecting frame, and placing heavy objects on the upper surface of the uppermost solid wood composite floor to be stacked for gravity lamination.

By implementing the gravity pressing step, the surface of the film pressed veneer solid wood composite floor is smoother, and has no bubbling and no bulge.

8. In the technical scheme, in the process C, the glossiness of the decorative film is measured before the upper position of the decorative film to be coated reaches the working frame, and the glossiness of the decorative film is measured in the middle of the coating, so that the glossiness is ensured to be within the range of 5.5-6.5 degrees, the surface visual quality of the finished product rear film pressed and faced solid wood composite floor is ensured to be more comfortable and relaxed, and the customer experience sense is improved;

in step C10, a corona machine is used to perform high-voltage corona polishing on the back surface of the facing film, and the high-voltage current is 18A-22A, so that the facing film is tightly attached to the adhesive surface layer on the substrate.

Due to the application of the scheme, compared with the prior art, the invention has the following advantages and effects:

1. the film laminated veneer solid wood composite floor prepared by the production process comprises a veneer film and a substrate, wherein the veneer film is covered on the top surface of the substrate, and the veneer film and the substrate are fixedly combined into a whole through PUR hot melt adhesive, so that the appearance defect of the surface layer is overcome.

2. In the production process, the used raw materials are environment-friendly products, and the preparation process and the use process of the products do not harm the environment and human bodies.

3. The PUR hot melt adhesive does not contain any organic solvent, aldehyde and solid content is 100%, and is environment-friendly; the facing film can be degraded when recovered, only releases water and carbon dioxide when burned, and does not generate any toxic gas.

4. The decorative film has good formability, low price, high PUR hot melt adhesive curing speed, high bonding strength, high temperature resistance and low temperature resistance, is suitable for geothermal and low temperature severe environments, can realize large-scale continuous production, and has high production efficiency; the surface antibacterial coating layer formed on the surface of the floor can inhibit the propagation of surface bacteria, and the antibacterial (staphylococcus aureus and escherichia coli) effect can reach 99.9%.

5. The wear-resisting property is superior to that of the paint-decorated solid wood composite floor and the paint-decorated solid wood floor, and the wear-resisting revolution is more than or equal to 2500.

6. The green environment-friendly film laminated veneer lumber composite floor for the building does not need hot pressing, the energy consumption of the working procedure is 0.5 degree/square, and 80 percent of energy consumption is saved; the PUR type glue is directly used for gluing, aldehyde pressing is avoided, and energy conservation and environmental protection are achieved.

7. Meanwhile, all links carried out in the production process can optimize the setting of working procedures under the condition that the production quality and the production efficiency of products are improved, compared with the existing painted solid wood composite floor or impregnated paper layer solid wood composite floor, the circulation of raw materials and semi-finished products between all working procedures is more reasonable, surface foreign matters on the surface of a base material and surface foreign matters of solid wood composite floor products, such as dust, wood dust and the like, can be effectively controlled, the environmental protection requirement of factories is met, and meanwhile, the energy consumption is greatly reduced on the premise of ensuring the quality of products for the optimized setting of process parameters such as temperature, time and the like.

Drawings

Fig. 1 is a schematic process flow diagram of a process for producing a green environment-friendly film laminated veneer lumber composite floor for construction according to an embodiment of the invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings and examples:

examples: the present invention will be described in detail with reference to the drawings, wherein modifications and variations are possible in light of the teachings of the present invention, without departing from the spirit and scope of the present invention, as will be apparent to those of skill in the art upon understanding the embodiments of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Singular forms such as "a," "an," "the," and "the" are intended to include the plural forms as well, as used herein.

The terms "first," "second," and the like, as used herein, do not denote a particular order or sequence, nor are they intended to be limiting, but rather are merely used to distinguish one element or operation from another in the same technical term.

As used herein, "connected" or "positioned" may refer to two or more components or devices in physical contact with each other, or indirectly, or in operation or action with each other.

As used herein, the terms "comprising," "including," "having," and the like are intended to be open-ended terms, meaning including, but not limited to.

The term (terms) as used herein generally has the ordinary meaning of each term as used in this field, in this disclosure, and in the special context, unless otherwise noted. Certain terms used to describe the present disclosure are discussed below, or elsewhere in this specification, to provide additional guidance to those skilled in the art in connection with the description herein.

The terms "front", "rear", "upper", "lower", "left", "right" and the like used herein are directional terms, and are merely used to describe positional relationships among the structures in the present application, and are not intended to limit the present protection scheme and the specific direction in actual implementation.

Example 1

Referring to a schematic process flow diagram shown in fig. 1, a production process of a green environment-friendly film laminated veneer lumber composite floor for construction provided by an embodiment of the invention comprises the following steps:

step C4: the decorating film to be pasted is arranged on the working frame;

And (2) a step H of: roller chamfering, namely performing roller coating chamfering water paint on the grooved solid wood composite floor product, after the color of the water paint is adjusted, opening a heating lamp groove, and performing roller coating water paint on the chamfer of the solid wood composite floor product by using a chamfering roller coater, and drying and solidifying;

In the first embodiment of the invention, the facing film is a polymer film, and consists of a material film layer, a printing wood grain layer, a wear-resistant layer, a UV paint layer, a surface antibacterial paint layer and a surface concave grain layer from bottom to top in sequence, wherein the facing film is formed by laminating the above layers at 110-130 ℃ to form the polymer film with the thickness of 0.27-0.3 mm; the PUR hot melt adhesive is a PUR hot melt adhesive, and PUR (Polyurethane Reactive) Chinese is totally called as moisture curing reaction polyurethane PUR hot melt adhesive, and the main component is isocyanate-terminated polyurethane prepolymer, so that the environment and the low-temperature environment can be suitably warmed, and the cured product is not melted basically after being reheated. The polymer film is very green and environment-friendly, can be degraded during recycling, only releases water and carbon dioxide during combustion, does not generate any toxic gas, is made of PVC or PP materials, is more firmly bonded with the PUR hot melt adhesive, and does not delaminate after being coated with the solid wood composite floor product.

Through implementation of the embodiment of the invention, all links carried out in the production process can optimize the arrangement of working procedures under the condition that the production quality and the production efficiency of products are improved, compared with the existing lacquer-faced solid wood composite floor or impregnated paper layer solid wood composite floor, the circulation of raw materials and semi-finished products among all working procedures is more reasonable, surface foreign matters on the surface of a base material and surface foreign matters of solid wood composite floor products, such as dust, wood dust and the like, can be effectively controlled, the environmental protection requirement of factories is met, and meanwhile, the energy consumption is greatly reduced on the premise of ensuring the quality of products for optimizing the arrangement of process parameters such as temperature, time and the like.

The following describes each step in the first embodiment of the present invention in detail.

In the step A raw material inspection and the step B substrate sheet inspection, the substrate sheet inspection uses a wood hygrometer, a steel tape and a micrometer.

The technological requirements are as follows:

a base material: the water content is required to be (8-12)%; the whole core base material of the pine layer with the thickness of 7.5mm in the middle has the length, width and thickness reaching the standard, and has no stripping in appearance;

and (3) a decorative film: the glossiness (5.5-6.5) is the same as that of the sample plate, and the color and surface wiredrawing effects are the same as those of the sample plate; film thickness is 0.28-0.30mm.

PUR hot melt adhesive: the date of production and expiration date are checked.

The process steps of the substrate sheet inspection B comprise:

step B1: and selecting a gear of the wood moisture meter (a fixed gear 4 of the solid wood composite floor), and detecting the water content of the substrate board.

Step B2: the substrate is inspected, and formaldehyde (dryer method) is less than or equal to 0.5mg/L; the dipping is free from peeling; the water content meets the standard requirement. Reference standard: LY/T1738-2020.

Step B3: the substrate size is measured, the length and width are measured by a steel tape, and the thickness is measured by a micrometer, wherein the process requirements of the substrate with relevant specification and model can be referred to in Table I.

List one

Step B4: the appearance quality of the surface is observed, the plate body has no glue spreading and layering phenomenon, the surface of the close-facing laminate plate needs to be smooth, obvious sanding marks and pits are not uneven. The technological wood layer at the most surface layer and the most back layer are in the same direction.

The inspection process of the decorative film is as follows:

firstly checking whether the appearance packaging protective film layer is damaged or not;

and then observing whether the glossiness and the surface color of the board surface are consistent with those of the initial sample, wherein the visual effect is consistent within 3 meters from the initial sample, and no obvious glossiness difference exists.

In the step C, the equipment used for the lamination is a dust removing and adsorbing machine, an infrared lamp oven (oven), a glue coater, a corona machine, a laminating machine, a gravity roller, etc.

The technological requirements are as follows:

infrared lamp oven temperature: the temperature of the infrared lamp incubator is set according to the seasonal temperature difference, the summer temperature is set to be (50+/-5) DEG C, the winter temperature is set to be (80+/-5) DEG C, and the temperature of the panel surface is ensured to be (30+/-5) DEG C, so that the later-stage lamination is facilitated.

PUR hot melt adhesive temperature: the glue temperature is controlled at (170+/-10);

coating speed: (14+ -1) meters/min;

corona machine: when the pasting is finished, the corona machine is safely opened, the high-voltage current is about 20A, and the corona makes the film and the glue to be pasted more tightly;

after the coating is finished, the board surface requires standard: the board surface is flat, has no glue shortage, no bubbling, no transverse printing, no garbage, no dent, no damage, no scratch and the like.

The technological process of the procedure C lamination comprises the following steps:

step C1: placing the PUR hot melt adhesive on a PUR hot melt machine, heating to (170+/-10) DEG C, standing for 5-10 minutes after the temperature is stable, starting a motor, and enabling a sealing pressing plate smeared with high-temperature lubricating oil to be in a descending state so as to dissolve the PUR hot melt adhesive (about 40-50 minutes), thereby ensuring that the glue-applying temperature of a rubber roller reaches (170+/-10);

step C2: starting two infrared lamp thermostats (first thermostats and second thermostats), and setting heating temperatures according to different seasons; the temperature is set to be (50+/-5) DEG C in summer and (80+/-5) DEG C in winter, so that the temperature of the plate surface is ensured to be (30+/-5) DEG C, the subsequent adhesion is facilitated, and the adhesive force is improved.

Step C3: after the PUR glue temperature and the infrared lamp constant temperature box reach the set temperature, the unit main pipe starts the flow frequency speed and adjusts to be synchronous.

Step C4: the product film to be produced is arranged on the working frame; and (5) putting into production after the temperatures are consistent with the corresponding set values.

Step C5: the substrate faces upwards, and the boards are placed in sequence along the mountain side in a tight and seamless way.

Step C6: through a dust removing and adsorbing machine, no foreign matters such as protruding or residual wood dust on the surface are checked.

Step C7: after passing through an infrared lamp incubator, the surface temperature of the substrate is first detected, and the surface temperature is (30+/-5) DEG C.

Step C8: the base material is passed through a gumming machine, the surface glue amount is checked to be uniform, the glue leakage and glue stacking are avoided, and the glue layer coating amount is (70-100) g/m < 2 >.

Step C9: and the plate surface colloid is kept flat and uniform after passing through the constant temperature box again.

Step C10: when the product passes through the laminating machine, a corona machine (the high-voltage current is about 20A) is turned on, and the high-voltage corona polishes the back surface of the film, so that the film is more tightly laminated with the adhesive. Meanwhile, the substrate passes through the flow frequency, and slowly enters the laminating machine along with the flow frequency speed to drive the film, so that the lamination is completed.

Step C11: the bonded plates sequentially enter a gravity roller machine to be subjected to gravity pressing, so that the plate surfaces are smooth, bubbling and swelling are avoided.

Step C12: and (5) stacking the pressed plate surfaces in order, wherein 50 plates are supported, and the names, the number and the production date of the products are marked on each plate.

Step C13: the stacked plates are orderly stacked together according to the product name, the uppermost plate is pressed by gravity, and the stacked plates are kept stand for more than 3 days in a natural environment. The next process may be performed.

Meanwhile, in executing each process flow of the procedure C laminating, the following precautions should be taken:

3 photometry measurements were made per roll of film. And the measurement is carried out once before, after and midway of replacement, so that the vision luminosity meets the requirements. The glossiness is within (5.5-6.5), the requirements are not met, and the machine is stopped and reported;

checking the surface appearance, the specific appearance quality and the second requirement of the pressed product at any time.

Watch II

In the step E, a sawing machine or the like is used as equipment.

The technological requirements are as follows: the plate surface is flat, no crush is depressed, the periphery is not peeled off and layered, the front and back surfaces are not damaged by saw teeth, and the size meets the requirements.

The technological process of cutting the board in the process E comprises the following steps:

step E1: and trimming the surplus film paper around the cured plate.

Step E2: the multi-blade saw is adjusted according to the product specification and the button type requirement on the production instruction sheet. The backer and the saw blade interval are adjusted, and the length and the width of each single sheet of plate meet the requirements of production instruction sheets:

Length: the length of the finished product is +12mm; width: the width of the finished product is +12mm; the edge straightness is less than or equal to 1mm.

Step E3: the test saw is used for 1-step confirmation, and then 3-step first-step confirmation of machining precision and appearance quality is finished, so that batch production can be realized.

Step E4: and (5) a plate receiving person exchanges the leftmost plate 180 degrees and places the outermost measuring mother groove on the large side.

Step E5: at the lampshade, arranging personnel to check the surface of the lampshade, and taking out the lampshade without bubbling, indentation, incomplete film, and other appearance abnormalities. Meanwhile, the residual garbage on the clean plate surface needs to be cleaned so as to prevent the plate surface from being damaged by the rear section.

Step E6: after the plates are orderly stacked, the edges of the mother grooves are required to be marked, and the marks such as the product names, the specifications, the quantity and the production date are clear.

Step E7: special products such as edge adjustment and the like are needed, attention is paid to separate stacking and identification, and meanwhile, attention is paid to a main pipe at the later stage of a meeting.

Meanwhile, when executing each process flow of the procedure E board cutting, the following precautions should be taken: every time a frame plate is replaced by a plate receiving person, the length, width and straight angle of the product are required to be confirmed, whether the length, width and straight angle are consistent with those of the first inspection is required, and a unit main pipe is informed to carry out corresponding adjustment if necessary.

In the step G, a four-sided planer, a double-sided planer, or the like is used as the equipment.

The technological requirements are as follows:

the size meets the requirement, the length is less than or equal to 1mm, and the width is less than or equal to 0.1mm; the rabbets are neat and straight, and the straight angle is less than or equal to 0mm; the assembly height difference is less than or equal to 0.1mm, and no assembly gap exists; chamfer gradient 35 degrees, length (0.5 plus or minus 0.1) mm;

appearance quality: the two sides of the periphery of the tongue-and-groove cannot be cracked, the surface of the tongue-and-groove cannot be scratched, greasy dirt is dirty and the tongue is damaged;

the latch buckle type projection is consistent with the standard drawing. And the four-side lock catches can be mutually spliced with the standard template and the warehouse finished product.

The grooving process in the procedure G comprises the following steps:

step G1: taking the production instruction list, checking the product to be grooved and the instruction list to be consistent. And (5) checking the consistency of the product model of the carton sticking strip and the code spraying machine with the production instruction. The former grooving is supposed to have the attention of the key abnormality, and the former feedback and the quality inspection feedback are followed.

Step G2: and adjusting the width of the four-side planing and double-end milling equipment according to the specification of the instruction sheet. The two slots are tested to measure the size, the height difference and the tightness of the slot, and the slots are matched with large goods in modules and warehouses without errors, and the slots are produced in batches at the rear. During grooving, a central cloth bag dust removing device is used for dust absorption, so that dust emission can be effectively controlled.

Step G3: the plate connecting personnel check the surface of each product, take out the products with abnormal appearance and put the products singly, and count the number to the corresponding area after counting and confirming by a main pipe; and meanwhile, manually removing residual film scraps at the long-side mother groove end.

Step G4: when the plate transfer person stacks the plates, the product needs to be stacked in order in the same direction, and garbage is not allowed to remain on the plates. Meanwhile, checking the long-side tenon edge of the product, and checking whether the base material has layering or not.

Step G5: the technician performs measurement and trial assembly confirmation during slotting of each product.

Step G6: stacking height: 90; neat and safe, and one layer is molded every 45 layers. And (5) after stacking, making a product mark. And checking the appearance of the tongue-and-groove without splitting and layering.

Meanwhile, in executing each process flow of the grooving in the procedure G, the following precautions should be taken:

checking the peripheral condition of the machine table before operation, checking whether locking devices of sliding parts are locked, checking whether a cutter is locked or not, lightly reversing each cutter shaft by hand without damage, confirming no collision, ensuring that the machine cover is closed, and checking that the machine cover can be started up without errors;

when working or stopping working, the feeding motor must be stopped first, then the ammonium button of each shaft can be pressed down, and the spindle motor can not be stopped in the feeding process;

pressing an emergency stop button when the operation is stopped in emergency;

when the similar problems occur for a plurality of times, the main pipe of the backup unit needs to be timely reported.

In the step H roll chamfering, there are used equipment such as a chamfer roll coater and constant temperature equipment.

The technological requirements are as follows:

the chamfer color is consistent with the surface layer color; the adhesive force is qualified, and the adhesive tape is used for adhesion and does not fall off;

appearance quality: chamfering is free of roller leakage or paint piling, and the periphery of the plate surface, the plate back and the notch is clean and free of paint pollution;

no impact damage exists around the notch;

production standard personnel: the number of the plates can be 5, namely 1, two persons can check and two persons can collect the plates.

The process flow of chamfering the H roller comprises the following steps:

step H1: the production instruction list is taken first and seen. And checking that the product to be chamfered is consistent with the instruction sheet. And (5) calibrating the standard color of the template.

Step H2: and (5) carrying out water paint color matching according to the template.

Step H3: taking a product coil inserting plate of a roller to be rolled, starting a roller chamfering machine, adjusting the angle and the equipment speed of a roller coating oil wheel, and pouring the adjusted water paint into an oil groove.

Step H4: starting the heating equipment, and checking that the lamp tubes are all started normally.

Step H5: taking the product to be rolled off the line plate for test production, checking that the color, effect and the like of the roller coating water paint meet the process requirements, and confirming that the product can be produced in batches after no error.

Step H6: the stacking of the plate placing personnel cannot be excessively high, and the height of the plate placing personnel cannot exceed 15 pieces or limit lines, so that the plate surface is prevented from being damaged by dragging due to heavy weight, and the tongue and groove is prevented from being damaged by pulling due to clamping grooves.

Step H7: and checking the chamfering quality of the roller by a checking person, and taking out the roller from the position and stacking the roller by a cooperative plate collecting person if the chamfering quality meets the process requirement. The plate surface is abnormally taken out of the plate by crush injury, scratch, breakage, bubbling, layering and the like. And (3) sorting, namely, finding that the same problem repeatedly occurs, and timely informing a technician of adjustment.

Step H8: and the plate stacking personnel can stack the products in order in the same direction, and the products do not move back and forth, so that the clean and tidy paint-free residues on the plate surface are ensured. Meanwhile, checking the long-side tenon edge of the product, and checking whether the base material has layering or not.

Step H9: stacking height: 90 layers, neatly safe, every 45 layers mould pressing one layer. And (5) after stacking, making a product mark.

Meanwhile, in executing each process flow of the process H roll chamfering, the following precautions should be taken: the products are stacked in the same direction, so that the processing and the production of the rear section are facilitated.

In the step I, wax sealing and packaging, there are used equipment such as wax sealing machine, packaging machine, film cutting machine, and beam sealing machine.

The technological requirements are as follows:

the peripheral wax is in place, so that no shortage, leakage and accumulation are caused; the front surface is free of wax marks or accumulated wax;

the name of the carton identification is consistent with that of the real object. The label names of the two ends are consistent and neat, and the label names are in the appointed frame;

the paper box is packaged beautiful, and the binding seal is free from damage and defect.

The process flow of the process I wax sealing package comprises the following steps:

step I1: before going off duty every day, a technician sets a heating device of a wax sealing machine, a film cutting machine and a beam sealing machine which are in need of production lines in tomorrow. Can automatically heat at the first half hour of the working on the day. The heating temperature of the wax sealing machine is between 110 and 130 ℃; the heating temperature of the film cutting machine is between 100 and 110 ℃; the heating temperature of the beam sealing machine is between 200 and 210 ℃.

Step I2: checking and adding the wax in the heating storage box, and proportioning the wax proportions: 25kg of aqueous wax: 12kg of solid wax.

Step I3: starting an automatic wax sealing device and an automatic packaging line device, checking each temperature control device, and checking the normal operation of the machine device.

Step I4: and adjusting the wax sealing module and the wax sealing speed according to the specifications of the product to be produced, and checking the consistency of the corresponding cartons and labels.

Step I5: when the temperature reaches, 10 plates are firstly placed, and after the periphery of the plates subjected to wax sealing is checked to be uniform, the plates can be produced in batches.

Step I6: after the plate feeding grooves are normal, formally batch production is carried out, and the plate faces are upwards placed into the automatic plate feeding grooves;

step I7: the inspection personnel (2) need to carry out full inspection again on the products, and pick and put the plates which do not meet the product requirements. The paint has no phenomena of bubbling, transverse printing, garbage, dent, damage, scratch, tongue defect, layering, paint pollution, chamfer paint leakage, whitening and the like.

Step I8: every 10 products are a bag, after passing through the binding and sealing machine, the binding and sealing film is complete and beautiful, and each supporting plate is 11 layers high.

Meanwhile, when each process flow of the process I wax sealing package is executed, the following notes should be paid attention to: in the normal production process, cold wax can not be supplemented in the normal production, so that the hidden danger after sale caused by incomplete dissolution of the wax is prevented. The wax supplementing can be added at the noon rest and meal time.

Example two

The second embodiment of the invention provides a green environment-friendly film laminated veneer lumber composite floor for building, wherein:

the membrane laminated veneer lumber composite floor is produced by adopting the production process of the green environment-friendly membrane laminated veneer lumber composite floor for building;

Example III

The third embodiment of the invention provides a production device of a green environment-friendly film laminated veneer solid wood composite floor for buildings, which is used for the production of the production process of the green environment-friendly film laminated veneer solid wood composite floor for buildings, wherein:

In addition, in the process of implementing the embodiments of the present invention, the applicant performs various indexes detection on the film laminated wood composite floor produced by the production process of the present invention, the conventional solid wood composite floor and the impregnated paper layer laminated wood composite floor, wherein the content of index requirements, detection results and the like are shown in the third table in detail, and the occurrence of "- - -" in each item in the third table indicates that the item is not required in the standard, and no such item exists.

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Watch III

In addition, random spot check detection is carried out on the film laminated veneer solid wood composite floor of different batches produced by the production process, and the detection result is shown in Table IV.

Table four

As can be seen from the results shown in the third and fourth tables, compared with similar products (conventional solid wood composite floor and impregnated paper layer compacted wood composite floor), the surface wear resistance of the film laminated veneer lumber composite floor produced by the production process provided by the invention is obviously better than that of similar products, and meanwhile, the film laminated veneer lumber composite floor also has the projects of impact resistance, residual dent resistance, peeling resistance and the like, has low formaldehyde content, meets the environmental protection requirement, and is more durable and environment-friendly.

Therefore, through implementation of the embodiments, the technical scheme of the invention solves the problems of uneven quality of the board surface, unobvious surface wear resistance, poor finish paint decoration effect, insufficient green environmental protection and the like in the existing solid wood composite floor production technology, and has the following advantages:

1. The veneer floor with the surface layer of the polymer film prepared by the preparation method comprises the following steps: a substrate layer and a polymer film decorative layer; the macromolecule film decorative layer is coated on the top surface of the substrate layer, and the macromolecule film decorative layer and the substrate layer are fixedly combined into a whole through PUR hot melt adhesive, so that the appearance defect of the surface layer is overcome.

2. The raw materials are all environment-friendly products, and the preparation process and the use process of the products can not cause harm to the environment and human bodies. The PUR hot melt adhesive does not contain any organic solvent, aldehyde and solid content is 100%, and is environment-friendly; the polymer film can be degraded when recovered, only releases water and carbon dioxide when burned, and does not generate any toxic gas.

3. The polymer film has good formability, low price, high PUR hot melt adhesive curing speed and high bonding strength, can realize large-scale and continuous production, and has high production efficiency.

4. An antibacterial scientific and technological coating (0.27-0.3 mm) is formed on the surface of the floor, so that the propagation of surface bacteria is inhibited, and the antibacterial (staphylococcus aureus and escherichia coli) effect reaches 99.9%.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The production process of the green environment-friendly film laminated veneer lumber composite floor for the building is characterized by comprising the following steps of:

and (C) working procedure: and (3) coating, namely heating and melting the PUR hot melt adhesive, starting an incubator to keep the temperature of a coating station constant, coating the surface of the substrate with a coating machine, and coating the decorative film on the surface of the substrate, wherein the process flow comprises the following steps:

step C1:2, heating the PUR hot melt adhesive to dissolve the PUR hot melt adhesive and ensure that the adhesive coating temperature of the adhesive roller reaches a set temperature, wherein the PUR hot melt adhesive temperature and the adhesive coating temperature are 160-180 ℃;

step C4: the decorating film to be pasted is arranged on the working frame;

and step D: keeping the solid wood composite floor for more than 48 hours at 15-35 ℃ and 50-80% humidity in natural environment to eliminate internal stress of the solid wood composite floor;

2. The process for producing the green environment-friendly film laminated veneer lumber composite floor for construction according to claim 1, which is characterized in that: the facing film is a polymer film and sequentially comprises a material film layer, a printing wood grain layer, a wear-resisting layer, a UV paint layer, a surface antibacterial paint layer and a surface concave grain layer from bottom to top, wherein the facing film is formed by laminating the layers at 110-130 ℃ to form the polymer film with the thickness of 0.27-0.3 mm.

3. The process for producing the green environment-friendly film laminated veneer lumber composite floor for construction according to claim 1, which is characterized in that: in the step E, the plate cutting process comprises the following steps:

4. The process for producing the green environment-friendly film laminated veneer lumber composite floor for construction according to claim 3, wherein the process comprises the following steps: in the grooving in the procedure G, the technological process comprises the following steps:

5. The process for producing the green environment-friendly film laminated veneer lumber composite floor for construction according to claim 4, wherein the process comprises the following steps: in the process H roller chamfering, the process flow comprises the following steps:

step H6: stacking the plates and chamfering the batch of rollers;

step H7: checking the chamfering quality of the roller, and taking out the product which is not rolled in place and stacking the product; carrying out classification treatment on abnormal plate surfaces such as crush injury, scratch, breakage, foaming and layering;

6. The process for producing the green environment-friendly film laminated veneer lumber composite floor for construction according to claim 5, wherein the process comprises the following steps: in the process I wax sealing package, the process flow comprises the following steps:

7. The process for producing a green and environment-friendly film laminated veneer lumber composite floor for construction according to claim 1, wherein in the gravity lamination step of step C13, any one of the following modes is sampled:

8. The process for producing the green environment-friendly film laminated veneer lumber composite floor for construction according to claim 1, which is characterized in that:

in the process C, the glossiness of the decorative film to be pasted is measured before the upper position of the decorative film to be pasted reaches the working frame, and the glossiness of the decorative film is measured in the middle of pasting, so that the glossiness is ensured to be within the range of 5.5-6.5 degrees;

in step C10, a corona machine is used to high voltage corona polish the back side of the facing film, with a high voltage current of 18A-22A.

9. The utility model provides a green membrane veneer parquet for building, its characterized in that:

the film laminated veneer lumber composite floor is produced by adopting the green environment-friendly film laminated veneer lumber composite floor production process for building according to any one of claims 1 to 8;

10. A production device of a green environmental protection film laminated veneer lumber composite floor for construction, which is used for producing the green environmental protection film laminated veneer lumber composite floor for construction according to any one of claims 1 to 8, and is characterized in that: