CN112060234A - Novel wooden core material - Google Patents

Novel wooden core material Download PDF

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Publication number
CN112060234A
CN112060234A CN202011083274.3A CN202011083274A CN112060234A CN 112060234 A CN112060234 A CN 112060234A CN 202011083274 A CN202011083274 A CN 202011083274A CN 112060234 A CN112060234 A CN 112060234A
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China
Prior art keywords
core material
wood
laminated
pine
lumber
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Pending
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CN202011083274.3A
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Chinese (zh)
Inventor
潘旭
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Individual
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Individual
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Priority to CN202011083274.3A priority Critical patent/CN112060234A/en
Publication of CN112060234A publication Critical patent/CN112060234A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/06—Manufacture of central layers; Form of central layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/13—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board all layers being exclusively wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)

Abstract

The invention discloses a novel wood core material, which is mainly characterized in that: the laminated veneer lumber comprises at least 3 layers, the laminated veneer lumber is respectively connected with the upper end surface and the lower end surface of the pine laminated lumber to form a core material in a square or cuboid shape, the thickness value of the pine laminated lumber is T, and the minimum length of the core material is L. The beneficial effects are that: the defect of torsional deformation of the existing wood core material is overcome, the core material is high in overall density and low in glue content, the core part of the core material is high in hardness and high in strength, the upper side and the lower side of the core material are good in toughness, the core material can be recycled, the core material can be made into a block-shaped core material or can be used as wood particles, particle board materials and the like after secondary processing, the core material is low in manufacturing cost and is more environment-friendly.

Description

Novel wooden core material
Technical Field
The invention relates to a core material, in particular to a novel wood core material.
Background
In the field of furniture or wood doors, wood core materials are indispensable manufacturing materials in the field, and the most common wood core materials in the prior art are core materials mainly made of wood particle boards or shaving board materials and wood core materials made of laminated veneer lumber. In addition, the wood core material made of wood raw material is less and less, the reason is that the country limits the felling of forest resource, so that the wood raw material is less and less, the cost of the wood raw material product is high, and on the other hand, the production period is delayed due to the limited purchasing channel.
The core material made of wood particle board or particle board material has the disadvantages that the density of the core material made of the wood particle board or particle board material is low and far inferior to that of the wood core material made of wood raw material, and a large amount of chemical binder is adopted in the manufacturing process, so that the core material is not environment-friendly and is easy to deform.
The core material made of wood raw material has a disadvantage that the production area, growing environment, age of the log, etc. are uncontrollable, so that the passage of the core material made of wood raw material may cause mass quality defects in that the growing environment of the log, the log is affected by sunshine, and the length of the sunshine time of the log is determined by the density of the log. Since the density of the log is determined by the soil, the temperature, and the age of the log, the quality of the log cannot be controlled, and the log is distorted when applied to a material for manufacturing furniture or a wooden door.
With the continuous development of the technology in the field, in recent years, composite core materials mainly comprising engineering plastics, laminated veneer lumber and metal materials which are combined through chemical bonding agents appear on the market, and the composite core materials have the disadvantage that the chemical bonding agents can bond and combine the composite core materials due to different materials, but the component effect of the chemical bonding agents is reduced along with the time, so that the composite core materials are delaminated and separated, the composite core materials are distorted, deformed and curled, and furniture or wood doors are deformed. In addition, the secondary utilization rate of the composite material is low, and great expense is needed for classifying engineering plastics, laminated veneers and metals in the composite material.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a novel wood core material, which mainly overcomes the defect of distortion of the existing wood core material. Meanwhile, a manufacturing process of the novel wood core material is disclosed.
In order to overcome the technical problems, the invention adopts the technical scheme that:
the laminated wood core comprises laminated veneer lumber and pine laminated wood, wherein the laminated veneer lumber comprises at least 3 layers, the laminated veneer lumber is respectively connected with upper and lower end faces of the pine laminated wood to form a core material in a square or cuboid shape, the thickness value of the pine laminated wood is T, and the minimum length of the core material is L.
Furthermore, the number of the pine laminated wood is at least 2, and the pine laminated wood is connected with each other through tooth-shaped occlusion.
Further, the thickness value T of the pine laminated wood is more than or equal to 10 mm.
Further, the minimum length L of the core material is larger than or equal to 400 mm.
Further, as described above: the process method for manufacturing the novel wood core material comprises the following steps,
firstly, manufacturing a prefabricated laminated veneer lumber;
(1) rotary cutting the log into a veneer with a thickness of 1.7 mm;
(2) drying, steaming and drying, namely drying the veneer of 1.7mm after rotary cutting, leveling and drying the veneer by a dryer of 100 ℃ and 120 ℃, and controlling the moisture content of the veneer to be 8%;
(4) gluing: gluing the veneer dried by distillation to 1.7mm by a gluing machine, wherein the glue is phenolic glue, and the formaldehyde content is not more than 1 mg;
(3) a splice plate: and paving the dried and leveled 1.7mm veneers into at least three layers in the direction parallel to the wood grain direction, and splicing the veneers into the prefabricated laminated veneer lumber by using an inclined street machine.
Step two, manufacturing pine laminated wood;
(1) raw material cutting: cutting the pine laminated wood into square or rectangular battens with the length of at least 200 mm;
(2) comb teeth: processing a tooth shape on at least one end face of the pine laminated wood;
(3) finger joint, namely, using an adhesive to engage and connect the tooth shapes of the sparse-tooth pine wood integrated materials;
(4) finishing the end face: planing and sanding the upper end surface and the lower end surface of the finger-jointed pine laminated wood to obtain the pine laminated wood with the thickness of at least 10 mm.
Step three, manufacturing a core material plate;
(1) gluing: gluing the upper end surface and the lower end surface of the pine laminated wood manufactured in the step two respectively, wherein the glue is phenol glue, and the content of formaldehyde is not more than 1 mg;
(2) a splice plate: respectively bonding the prefabricated laminated veneer lumber manufactured in the step one to the upper end surface and the lower end surface of the pine laminated lumber;
(3) cold press molding: cold press molding at 20 deg.C or higher with a cold pressure of at least 8kg/cm2Maintaining the pressure for at least 40 minutes to obtain a laminated board;
(4) hot press molding: passing the cold-formed laminate at a temperature of at least 120 deg.C to a pressure of 8kg/cm2For a dwell time of at least 40 minutes under pressure to obtain a core board.
Step four, manufacturing a core material;
(1) cutting and cutting: cutting the core material plate manufactured in the step three into strips with square or rectangular sections;
(2) core trimming: and flattening, grinding and sanding the strip-shaped core material plate to obtain the novel wood core material.
Compared with the prior art, the invention has the beneficial effects that: the core material has high integral density, less glue content, high core hardness, high strength and good toughness of the upper and lower sides, and when the core material is applied to the manufacture of furniture or a wooden door, the front and rear end surfaces of the core material are connected with the material used by the furniture or the wooden door, so that the laminated veneer lumber of the upper and lower end surfaces of the core material can effectively protect the pine laminated wood, the pine laminated wood is prevented from being distorted and deformed in the use process, the front and rear end surfaces of the core material have good support rigidity for the furniture or the wooden door, and the core material is not easy to deflect and deform. Meanwhile, the core material can be recycled and reused, can be made into a block-shaped core material or can be used as wood particles, shaving board materials and the like after secondary processing, and is low in manufacturing cost and more environment-friendly.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a front view of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a partially enlarged view of the area a shown in fig. 1.
Fig. 4 is a schematic diagram of an application structure of the present invention.
FIG. 5 is a process flow diagram of the present invention.
Detailed Description
As can be seen from fig. 1-2, the laminated veneer lumber comprises a laminated veneer lumber 1 and a pine laminated lumber 2, wherein the laminated veneer lumber 1 has at least 3 layers, the laminated veneer lumber 1 is respectively connected to the upper and lower end surfaces of the pine laminated lumber 2 to form a core 3 in a square or rectangular shape, the thickness value of the pine laminated lumber 2 is T, and the minimum length of the core 3 is L.
The number of the pine laminated wood 2 is at least 2, and each pine laminated wood 2 is connected through tooth-shaped occlusion, so that seamless connection between the pine laminated wood 2 is realized, self-locking between seams is realized through tooth shapes, mutual torsional deformation is prevented through the tooth shapes, and then the connection strength is limited and enhanced through the laminated veneer lumber 1, as shown in fig. 3.
The single-layer thickness specification of the laminated veneer lumber is usually within the range of 1-3mm, and the single-layer thickness specification of the laminated veneer lumber is 1.7 mm.
When the thickness value T of the pine laminated wood 2 is equal to 10mm, the number of the laminated veneer wood 1 is at least 3, and the thickness value of each laminated veneer wood is 1.7mm, so that the defect of core material distortion can be effectively overcome.
The minimum length L of the core material 3 is more than or equal to 400mm, that is, the minimum length of each pine laminated wood 2 in the core material is more than or equal to 200mm, in order to make secondary use of leftover materials and meet the minimum length required by processing tooth shapes of the pine laminated wood 2.
As shown in fig. 4, when the wood door panel is applied to the manufacture of the wood door, the panels 4 of the wood door are respectively connected to the front side and the rear side of the core material 3, the laminated veneer lumber 1 of the core material is arranged in the interlayer of the wood door panel, the overall density of the core material is high, the gel content is low, the core part of the core material is high in hardness and strength, the upper side and the lower side of the core material are good in toughness, the laminated veneer lumber 1 on the upper end surface and the lower end surface of the core material 3 effectively protects the pine laminated lumber 2, the phenomenon that the pine laminated lumber 2 is distorted and deformed in the using process is overcome, and the front end and the rear end of the core material. Meanwhile, the core material can be recycled and reused, can be made into a block-shaped core material or can be used as wood particles, shaving board materials and the like after secondary processing, and is low in manufacturing cost and more environment-friendly.
As described above and with reference to fig. 5: the process method for manufacturing the novel wood core material comprises the following steps,
s1, manufacturing a prefabricated laminated veneer lumber;
(1) rotary cutting the log into a veneer with a thickness of 1.7 mm;
(2) drying, steaming and drying, namely drying the veneer of 1.7mm after rotary cutting, leveling and drying the veneer by a dryer of 100 ℃ and 120 ℃, and controlling the moisture content of the veneer to be 8%;
(4) gluing: gluing the veneer dried by distillation to 1.7mm by a gluing machine, wherein the glue is phenolic glue, and the formaldehyde content is not more than 1 mg;
(3) a splice plate: and paving the dried and leveled 1.7mm veneers into at least three layers in the direction parallel to the wood grain direction, and splicing the veneers into the prefabricated laminated veneer lumber by using an inclined street machine.
S2, manufacturing pine laminated wood;
(1) raw material cutting: cutting the pine laminated wood into square or rectangular battens with the length of at least 200 mm;
(2) comb teeth: processing a tooth shape on at least one end face of the pine laminated wood;
(3) finger joint, namely, using an adhesive to engage and connect the tooth shapes of the sparse-tooth pine wood integrated materials;
(4) finishing the end face: planing and sanding the upper end surface and the lower end surface of the finger-jointed pine laminated wood to obtain the pine laminated wood with the thickness of at least 10 mm.
S3, manufacturing a core material plate;
(1) gluing: gluing the upper end surface and the lower end surface of the pine laminated wood manufactured in the step two respectively, wherein the glue is phenol glue, and the content of formaldehyde is not more than 1 mg;
(2) a splice plate: respectively bonding the prefabricated laminated veneer lumber manufactured in the step one to the upper end surface and the lower end surface of the pine laminated lumber;
(3) cold press molding: cold press molding at 20 deg.C or higher with a cold pressure of at least 8kg/cm2Maintaining the pressure for at least 40 minutes to obtain a laminated board;
(4) hot press molding: passing the cold-formed laminate at a temperature of at least 120 deg.C to a pressure of 8kg/cm2For a dwell time of at least 40 minutes under pressure to obtain a core board.
S4, manufacturing a core material;
(1) cutting and cutting: cutting the core material plate manufactured in the step three into strips with square or rectangular sections;
(2) core trimming: and flattening, grinding and sanding the strip-shaped core material plate to obtain the novel wood core material.
Example 1
As a preferred embodiment of the present invention, when the thickness value T of the pine laminated wood 2 of the core 3 is 20mm, the laminated veneer lumber 1 is 7 layers, and the single-layer thickness of the laminated veneer lumber 1 is 1.7 mm.
As described in this embodiment and shown in fig. 5, it can be seen that: the process method for manufacturing the novel wood core material comprises the following steps,
s1, manufacturing a prefabricated laminated veneer lumber;
(1) rotary cutting the log into a veneer with a thickness of 1.7 mm;
(2) drying, steaming and drying, namely drying the veneer of 1.7mm after rotary cutting, leveling and drying the veneer by a dryer of 100 ℃ and 120 ℃, and controlling the moisture content of the veneer to be 8%;
(4) gluing: gluing the veneer dried by distillation to 1.7mm by a gluing machine, wherein the glue is phenolic glue, and the formaldehyde content is not more than 1 mg;
(3) a splice plate: and paving the dried and leveled 1.7mm veneers into 7 layers in the direction parallel to the wood grain, and splicing the veneers into the prefabricated laminated veneer lumber by using an inclined street machine.
S2, manufacturing pine laminated wood;
(1) raw material cutting: cutting the pine laminated wood into square or rectangular battens with the length of at least 200 mm;
(2) comb teeth: processing a tooth shape on at least one end face of the pine laminated wood;
(3) finger joint, namely, using an adhesive to engage and connect the tooth shapes of the sparse-tooth pine wood integrated materials;
(4) finishing the end face: and planing and sanding the upper end surface and the lower end surface of the finger-jointed pine laminated wood to obtain the pine laminated wood with the thickness of 20 mm.
S3, manufacturing a core material plate;
(1) gluing: gluing the upper end surface and the lower end surface of the pine laminated wood manufactured in the step two respectively, wherein the glue is phenol glue, and the content of formaldehyde is not more than 1 mg;
(2) a splice plate: respectively bonding the prefabricated laminated veneer lumber manufactured in the step one to the upper end surface and the lower end surface of the pine laminated lumber;
(3) cold press molding: cold press molding at 20 deg.C or higher with a cold pressure of at least 10kg/cm2Maintaining the pressure for at least 60 minutes to obtain a laminated board;
(4) hot press molding: passing the cold-formed laminate at a temperature of at least 120 deg.C to a pressure of 10kg/cm2For a dwell time of at least 60 minutes under pressure to obtain a core plate.
S4, manufacturing a core material;
(1) cutting and cutting: cutting the core material plate manufactured in the step three into strips with square or rectangular sections;
(2) core trimming: and flattening, grinding and sanding the strip-shaped core material plate to obtain the novel wood core material.
The invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (5)

1. The utility model provides a novel wooden core, includes laminated veneer lumber and pine integrated wood, its characterized in that: the laminated veneer lumber comprises at least 3 layers, the laminated veneer lumber is respectively connected with the upper end surface and the lower end surface of the pine laminated lumber to form a core material in a square or cuboid shape, the thickness value of the pine laminated lumber is T, and the minimum length of the core material is L.
2. The novel wood core material of claim 1 wherein: the number of the pine laminated wood is at least 2, and the pine laminated wood is connected with each other through tooth-shaped occlusion.
3. The novel wood core material of claim 1 wherein: the thickness value T of the pine laminated wood is more than or equal to 10 mm.
4. The novel wood core material of claim 1 wherein: the minimum length L of the core material is more than or equal to 400 mm.
5. Use of a novel wood core according to any of claims 1-4, characterized in that: the process method for manufacturing the novel wood core material comprises the following steps of firstly, manufacturing a prefabricated laminated veneer lumber; (1) rotary cutting the log into a veneer with a thickness of 1.7 mm; (2) drying, steaming and drying, namely drying the veneer of 1.7mm after rotary cutting, leveling and drying the veneer by a dryer of 100 ℃ and 120 ℃, and controlling the moisture content of the veneer to be 8%; and (4) gluing: gluing the dried veneer with the thickness of 1.7mm by a gluing machine to obtain phenolic glueThe formaldehyde content does not exceed 1 mg; (3) a splice plate: and paving the dried and leveled 1.7mm veneers into at least three layers in the direction parallel to the wood grain direction, and splicing the veneers into the prefabricated laminated veneer lumber by using an inclined street machine. Step two, manufacturing pine laminated wood; (1) raw material cutting: cutting the pine laminated wood into square or rectangular battens with the length of at least 200 mm; (2) comb teeth: processing a tooth shape on at least one end face of the pine laminated wood; (3) finger joint, namely, using an adhesive to engage and connect the tooth shapes of the sparse-tooth pine wood integrated materials; (4) finishing the end face: planing and sanding the upper end surface and the lower end surface of the finger-jointed pine laminated wood to obtain the pine laminated wood with the thickness of at least 10 mm. Step three, manufacturing a core material plate; (1) gluing: gluing the upper end surface and the lower end surface of the pine laminated wood manufactured in the step two respectively, wherein the glue is phenol glue, and the content of formaldehyde is not more than 1 mg; (2) a splice plate: respectively bonding the prefabricated laminated veneer lumber manufactured in the step one to the upper end surface and the lower end surface of the pine laminated lumber; (3) cold press molding: cold press molding at 20 deg.C or higher with a cold pressure of at least 8kg/cm2Maintaining the pressure for at least 40 minutes to obtain a laminated board; (4) hot press molding: passing the cold-formed laminate at a temperature of at least 120 deg.C to a pressure of 8kg/cm2For a dwell time of at least 40 minutes under pressure to obtain a core board. Step four, manufacturing a core material; (1) cutting and cutting: and cutting the core material plate manufactured in the step three into strips with square or rectangular sections.
CN202011083274.3A 2020-10-12 2020-10-12 Novel wooden core material Pending CN112060234A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011083274.3A CN112060234A (en) 2020-10-12 2020-10-12 Novel wooden core material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011083274.3A CN112060234A (en) 2020-10-12 2020-10-12 Novel wooden core material

Publications (1)

Publication Number Publication Date
CN112060234A true CN112060234A (en) 2020-12-11

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CN202011083274.3A Pending CN112060234A (en) 2020-10-12 2020-10-12 Novel wooden core material

Country Status (1)

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CN (1) CN112060234A (en)

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