CN106493802B - A kind of container bottom board and preparation method thereof containing directional structure board - Google Patents
A kind of container bottom board and preparation method thereof containing directional structure board Download PDFInfo
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- CN106493802B CN106493802B CN201611225636.1A CN201611225636A CN106493802B CN 106493802 B CN106493802 B CN 106493802B CN 201611225636 A CN201611225636 A CN 201611225636A CN 106493802 B CN106493802 B CN 106493802B
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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
- B27J—MECHANICAL WORKING OF CANE, CORK, OR SIMILAR MATERIALS
- B27J1/00—Mechanical working of cane or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The present invention provides a kind of container bottom board containing directional structure board, middle layer is directional structure board, and middle layer two sides are symmetrical structure, and middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；The middle layer, lateral ply, bamboo curtain splint layer are connected with secondary outer layer by adhesive layer；The bamboo curtain splint is that bamboo slights curtain or rolls curtain；The secondary outer layer is longitudinal ply or bamboo mat layer；The adhesive layer is the resin film that surface is coated with phenolic resin glue.Container bottom board provided by the invention carries out the gluing of each layer using the resin film that surface is coated with phenolic resin glue, to reduce the requirement in preparation process to each layer moisture content, moisture content can carry out assembly lower than 20% after bamboo curtain splint drying, not only save the drying time of bamboo curtain splint, reduce energy waste, and two procedures of bamboo curtain splint impregnation and drying are also reduced, the timber intensity produced is high, dipping and stripping performance is good.
Description
Technical field
The present invention relates to a kind of technical field of composite board, in particular to a kind of container bottom containing directional structure board
Plate and preparation method thereof.
Background technique
Main tool of the container as transport, is largely used in cargo transport；In recent years, with the frequency of trade contacts
Numerous, container yield also sharply increases, and requires the base plate performance of container also higher and higher.
Traditional container bottom board includes full bamboo, full wooden container bottom plate and bamboo and wood container bottom board, wherein full bamboo packaging
Bottom plate is made of bamboo wood, i.e., bamboo fragmentation is formed thin bamboo strip, then bamboo chip is woven into bamboo mat, bamboo curtain splint after drying with rope,
Bamboo mat, bamboo curtain splint are carried out impregnation again, dried again, in the alternate cross laminates of the intracavitary vertically and horizontally bamboo curtain splint of hot press die, then carries out face
Plate layer, substrate assembly, substrate upper and lower surface are panel or impregnated paper veneer layer, and hot pressing forms after laying, form vertically and horizontally bamboo curtain splint
Alternate hierarchical structure all passes through phenolic resin gluing knot between adjacent level.Bamboo and wood container bottom board is then one kind with wooden list
Plate and bamboo mat, bamboo curtain splint are the compound preparation of primary raw material, are veneer and bamboo mat, bamboo curtain warp element first drying, apply adhesive, then into
Row secondary drying (drying glue), a kind of assembly manufactured artificial board after hot pressing again.
The preparation process of traditional container bottom board is very strict for the water content requirement of bamboo curtain splint, bamboo mat and veneer,
Ask the moisture content of veneer lower than 12%, the moisture content of bamboo mat and bamboo curtain splint just can be carried out subsequent immersing glue process lower than 6%, otherwise can
Cause just suck certain phenolic resin glue amount when impregnation, and bamboo mat after impregnation and bamboo curtain splint need to be dried to again it is aqueous
Rate just can be carried out assembly lower than 15%, otherwise be unable to satisfy the requirement of the physical and mechanical properties such as intensity and the dipping and stripping of plate.
Summary of the invention
In view of this, that it is an object of that present invention to provide a kind of intensity is high, dipping and stripping performance is good contains directional structure board
Container bottom board, the requirement in preparation process to bamboo curtain splint, bamboo mat and Veneer moisture is low, and do not need to bamboo curtain splint, bamboo mat into
It row impregnation and dries again and veneer wears glue gluing process, improves production efficiency, reduce repetitive operation, reduce the energy and glue and disappear
Consumption.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of container bottom board containing directional structure board, middle layer is directional structure board, middle layer
Two sides are symmetrical structure, and middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；Institute
Middle layer, lateral ply, bamboo curtain splint layer is stated to connect with secondary outer layer by adhesive layer；The bamboo curtain splint is that bamboo slights curtain or rolls curtain；Institute
Time outer layer is stated as longitudinal ply or bamboo mat layer；The adhesive layer is the resin film that surface is coated with phenolic resin glue.
Preferably, the bamboo curtain splint layer includes 1~4 bamboo curtain splint；
When the bamboo curtain splint is greater than 1, connected between adjacent two panels bamboo curtain splint by adhesive layer.
Preferably, the material of the resin film is polyethylene, polypropylene, polystyrene or polyvinyl chloride.
Preferably, the decorative layer is facing paper, bamboo mat, rotary-cut bamboo and wood matter veneer, non-woven fabrics, artificial veneer or fire prevention
Plate.
Preferably, the directional structure board with a thickness of 8~18mm；
It is described transverse direction ply with a thickness of 1.2~1.5mm；
The single-sheet thickness that the bamboo slights curtain is 1.7~2.0mm；The single-sheet thickness for rolling curtain is 2.5~5.5mm；
It is described longitudinal direction ply with a thickness of 1.2~1.5mm；The bamboo mat layer with a thickness of 1.0~1.2mm.
The present invention provides a kind of preparation methods of container bottom board described in above scheme, comprising the following steps:
The moso bamboo for being 3~8cm using diameter is prepared as raw material and rolls curtain, moisture content≤20% for rolling curtain；Or
Moso bamboo using diameter greater than 8cm is prepared bamboo and slights curtain, the bamboo slights moisture content≤20% of curtain as raw material；It is described to roll curtain
Or thin bamboo strips used for weaving curtain is bamboo curtain splint layer raw material；
Rounding is dried at after veneer to moisture content≤20%；
It dries after resin film is carried out impregnation or glue spraying to moisture content≤25%, the glue is phenolic resin glue, is glued
Tie layer；
It is that directional structure board, middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer from inside to outside according to middle layer
The sequence of layer passes sequentially through the adhesive layer bonding assembly, and the secondary outer layer is longitudinal ply or bamboo mat layer；It is obtained again in assembly
Ornament materials is arranged in the upper and lower surface of the bottom plate young bird product arrived, obtains slab；
Slab progress hot pressing is obtained into the container bottom board containing directional structure board.
Preferably, the hot pressing includes: pressurization heat transfer under the conditions of gauge pressure is 2.0~5.0MPa, then in unit pressure
For 22~26kgf/cm2Under conditions of thermocompression forming, 90~100 DEG C of pressure release ejecting plates are cooled to after sizing.
Preferably, the temperature of the pressurization heat transfer and thermocompression forming is independently 135~155 DEG C；The pressurization heat transfer
Time is 0.5~1min/mm plate thickness；The time of the thermocompression forming is 10~15min.
Preferably, the solid content of the phenolic resin glue is 40~46%；The pH value of the phenolic resin glue is 10~13；
Phenolic resin glue 4# glasss of viscosity of painting under the conditions of 25 DEG C are 30~80 seconds.
Preferably, the glue amount of the impregnation or glue spraying independently is the 25~35% of resin film weight.
The present invention provides a kind of container bottom board containing directional structure board, middle layer is directional structure board, middle layer
Two sides are symmetrical structure, and middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；Institute
Middle layer, lateral ply, bamboo curtain splint layer is stated to connect with secondary outer layer by adhesive layer；The bamboo curtain splint is that bamboo slights curtain or rolls curtain；Institute
Time outer layer is stated as longitudinal ply or bamboo mat layer；The adhesive layer is the resin film that surface is coated with phenolic resin glue.The present invention
The gluing that each layer is carried out using the resin film that surface is attached with phenolic resin glue, instead of in conventional method directly using phenolic aldehyde tree
Rouge glue carries out glued method, to reduce the requirement in preparation process to each layer moisture content, contains after rolling curtain/bamboo curtain splint drying
Water rate can carry out assembly lower than 20%, not only save the drying time of bamboo curtain splint, the plate for reducing energy waste, and obtaining
Intensity is high, dipping and stripping performance is good.Embodiment the result shows that, the rift grain static bending strength of container bottom board provided by the invention is
87.9~93.3MPa, band static bending strength are 37.1~38.6MPa, and modulus of elasticity parellel to grain is 10076~10105MPa, band
Elasticity modulus is 3576~3635MPa, and dipping and stripping performance be fully able to meet GB/T19536-2015 it is (used for bottom plate of container
Glued board standard) requirement.
The preparation method of container bottom board described in a kind of above scheme provided by the invention, uses impregnation or the tree of glue spraying
Adipose membrane replaces phenolic resin glue, and the process for eliminating bamboo curtain splint impregnation and drying again, production method is simpler, and reduces to bamboo
The requirement of curtain layer and ply moisture content has reached reduction energy consumption, reduction bamboo curtain splint, bamboo mat impregnation, drying and veneer and has worn glue gluing
Etc. processes, improve production efficiency, reduce the purpose of cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the container bottom board provided in an embodiment of the present invention containing directional structure board；
In Fig. 1: 1- decorative layer, 2- outer layer, 3- bamboo curtain splint layer, 4- transverse direction ply, 5- middle layer, 6- adhesive layer.
Specific embodiment
The present invention provides a kind of container bottom board containing directional structure board, middle layer is directional structure board, middle layer
Two sides are symmetrical structure, and middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；It is described
Middle layer, lateral ply, bamboo curtain splint layer are connected with secondary outer layer by adhesive layer；The bamboo curtain splint is that bamboo slights curtain or rolls curtain；It is described
Secondary outer layer is longitudinal ply or bamboo mat layer；The adhesive layer is the resin film that surface is coated with phenolic resin glue.
Container bottom board provided by the invention includes middle layer, and the middle layer is directional structure board.Directional structure board
(OSB plate) is also known as oriented structure chipboard, is to be processed into plane by special equipment using small dimension wood, thinnings, wooden core as raw material
Piece (generally 40~100mm long, 5~20mm wide, 0.3~0.7mm are thick), through flaking, drying, sizing, orienting spreading, is hot pressed into
A kind of oriented structure plate made of the techniques such as type, inside are oriented structure, non junction, seamless, slight crack, whole uniformity
Good, static bending strength, internal bond strength and elasticity modulus are high.
In the present invention, the thickness of the directional structure board is preferably 8~18mm, more preferably 9~15mm；The orientation
The area of structural slab is preferably 2440 × 1200mm；The present invention does not have particular/special requirement to the source of the directional structure board, uses
Directional structure board commercially.
Container bottom board provided by the invention is symmetrical structure, forms axial symmetry as a result, centre by symmetry axis of middle layer
Layer two sides are symmetrical structure, and being bonded in the middle layer two sides is lateral ply.In the present invention, the lateral ply
For the ply of the transversely arranged composition of veneer；The veneer thickness of the transverse direction ply is preferably 1.2~1.5mm, more preferably
For 1.3~1.4mm；The width of the single veneer is preferably 60~63cm, more preferably 61~62cm；The transverse direction ply
Horizontally-spliced obtain is carried out using veneer；The spliced veneer width is greater than OSB board width；Length of the present invention to veneer
There is no particular/special requirement, using well-known to those skilled in the art；The veneer number that the present invention uses lateral ply
There is no particular/special requirement, using well-known to those skilled in the art.
In the present invention, the rift grain direction of the veneer is identical as the longitudinal direction of directional structure board, then is longitudinal veneer,
The rift grain direction of the veneer is vertical with the longitudinal direction of directional structure board, then is lateral veneer.
Container bottom board provided by the invention includes the bamboo curtain splint layer being bonded on the outside of the lateral ply.In the present invention
In, the bamboo curtain splint is that bamboo slights curtain or rolls curtain；The bamboo curtain splint layer preferably includes 1~4 bamboo curtain splint, more preferably includes 2~3 bamboos
Curtain；When the bamboo curtain splint is greater than 1, connected between two panels bamboo curtain splint by adhesive layer.In the present invention, the bamboo slights the monolithic thickness of curtain
Degree is preferably 1.7~2.0mm, more preferably 1.8~1.9mm；The single-sheet thickness for rolling curtain is preferably 2.5~5.5mm, more
Preferably 3.0~5.0mm.
In the present invention, the curtain that rolls is prepared using the moso bamboo of small-and-middle diameter (diameter be 3~8cm), is extended
The use scope of path moso bamboo reduces the preparation cost of container bottom board.
Container bottom board provided by the invention includes the secondary outer layer being bonded on the outside of the bamboo curtain splint layer.In the present invention, institute
Time outer layer is stated as longitudinal ply or bamboo mat layer；Veneer used in the longitudinal direction ply is consistent with lateral ply, herein no longer
It repeats；The thickness of the bamboo mat layer is preferably 1.0~1.2mm, more preferably 1.1mm.
The present invention does not have particular/special requirement to the source of bamboo mat, is slightd using bamboo and is woven or using bamboo commercially
Xi Junke.
In the present invention, the middle layer, lateral ply, bamboo curtain splint layer pass sequentially through adhesive layer with secondary outer layer and connect；Institute
Stating adhesive layer is the resin film that surface is coated with phenolic resin glue.In the present invention, the material of the resin film is preferably poly- second
Alkene, polypropylene, polystyrene or polyvinyl chloride；In terms of the area in face to be bonded, the dosage of the adhesive layer is preferably 65~
80g/m2, more preferably 70~75g/m2；The thickness of the resin film is preferably 15~25, and more preferably 18~20 (1
=0.01mm)；The coated weight of the phenolic resin glue is preferably 25~35% of resin film quality in adhesive layer, more preferably 28
~32%.
The present invention replaces phenolic resin glue to carry out the glue between each layer using the resin film that surface is attached with phenolic resin glue
It closes, each layer is made to be not necessarily to direct impregnation or glue spraying during the preparation process, without considering the suction glue amount of bamboo curtain splint, bamboo mat, ply, from
And reduce the requirement in preparation process to each plate layer moisture content.
Container bottom board provided by the invention includes the decorative layer on the outside of time outer layer.In the present invention, the decorative layer is excellent
It is selected as facing paper, bamboo mat, rotary-cut bamboo and wood matter veneer, non-woven fabrics, artificial veneer or fire-proof plate.The dress of unlike material in this field
Decorations layer has different thickness requirements, and the present invention does not have particular/special requirement to the thickness of decorative layer, is using the general thickness of this field
It can.
In the present invention, the decorative layer is that facing paper Shi Yuci outer layer is connected without using adhesive layer, in preparation process
In directly pass through hot pressing connects；The decorative layer is bamboo mat, rotary-cut bamboo and wood matter veneer, non-woven fabrics, artificial veneer or fire prevention
When plate, need to connect using adhesive layer 6 with time outer layer.
The present invention provides a kind of preparation methods of container bottom board described in above scheme, comprising the following steps:
The moso bamboo for being 3~8cm using diameter is prepared as raw material and rolls curtain, moisture content≤20% for rolling curtain；Or
Moso bamboo using diameter greater than 8cm is prepared bamboo and slights curtain, the bamboo slights moisture content≤20% of curtain as raw material；It is described to roll curtain
Or thin bamboo strips used for weaving curtain is bamboo curtain splint layer raw material；
Rounding is dried at after veneer to moisture content≤20%；
It dries after resin film is carried out impregnation or glue spraying to moisture content≤25%, the glue is phenolic resin glue, is glued
Tie layer；
It is that directional structure board, middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer from inside to outside according to middle layer
The sequence of layer passes sequentially through the adhesive layer bonding assembly, and the secondary outer layer is longitudinal ply or bamboo mat layer；It is obtained again in assembly
Ornament materials is arranged in the upper and lower surface of the bottom plate young bird product arrived, obtains slab；
Slab progress hot pressing is obtained into the container bottom board containing directional structure board.
The moso bamboo that the present invention is 3~8cm using diameter is prepared as raw material and rolls curtain, and the moisture content for rolling curtain≤
20%；Or the moso bamboo using diameter greater than 8cm is prepared bamboo and slights curtain, the bamboo slights moisture content≤20% of curtain as raw material；It is described
It rolls curtain or thin bamboo strips used for weaving curtain is bamboo curtain splint layer raw material.In the present invention, the diameter for preparing the moso bamboo for rolling curtain is preferably 4~7cm,
More preferably 5~6cm；The diameter for the moso bamboo that the preparation bamboo slights curtain is preferably 9~15cm, more preferably 10~12cm.
When preparation rolls curtain, moso bamboo is rolled to obtain by the present invention rolls piece, will roll piece and is woven into and rolls curtain；It is preparing
When thin bamboo strips used for weaving curtain, small-and-middle diameter moso bamboo is cutd open the thin bamboo strip and obtains bamboo by the present invention to be slightd, then bamboo slightd and is woven into bamboo and slights curtain.In the present invention, described
Roll curtain and bamboo slight curtain thickness it is consistent with above scheme, details are not described herein.
It obtains after rolling curtain/bamboo curtain splint, the present invention will roll curtain or bamboo curtain splint is dry to moisture content≤20%, and it is former to obtain bamboo curtain splint layer
Material.In the present invention, the temperature of the drying is preferably 95~100 DEG C, and more preferably 96~98 DEG C；The present invention to it is dry when
Between without particular/special requirement, it is dry to moisture content≤20% that curtain/bamboo curtain splint will be rolled；Present invention preferably uses drying sheds to rolling
Curtain/bamboo curtain splint is dried.In the present invention, the curtain or the moisture content of bamboo curtain splint of rolling is preferably 15~20%, and more preferably 16
~18%.
In the art, small diameter bamboo (diameter be 3~8cm) application range is relatively narrow, be typically used as clothes airing rod, besom handle,
Plant vegetables built etc., and the present invention prepares container bottom board by raw material of small diameter bamboo, improves small diameter bamboo utility value, and into
One step reduces the cost of container bottom board.
The present invention at veneer and dries rounding to moisture content≤20%.In the present invention, the diameter of the log
Preferably 8~30cm, more preferably 14~24cm；Present invention preferably uses peelers to carry out rotary-cut；Wood of the present invention to log
Material type does not have particular/special requirement, uses the log of this field routine；The rotary-cut obtains the thickness and above scheme of veneer
Unanimously, details are not described herein；The mode of the drying is consistent with curtain/bamboo curtain splint drying mode is rolled, and details are not described herein.At this
In invention, the moisture content of the veneer is preferably 15~20%, and more preferably 16~18%.
It dries after resin film is carried out impregnation or glue spraying to moisture content≤25%, the glue is phenolic resin glue, is glued
Tie layer.In the present invention, the material of the resin film is consistent with above scheme, and details are not described herein；The resin film it is aqueous
Rate is preferably 20~25%, and more preferably 22~23%；The solid content of the phenolic resin glue is preferably 40~46%, more preferably
It is 43~45%；The pH value of the phenolic resin glue is preferably 10~13, and more preferably 11~12；The phenolic resin glue is 25
4# glasss of viscosity of painting under the conditions of DEG C are preferably 30~80 seconds, and more preferably 40~60 seconds.In the present invention, the spraying or dipping
The quality of phenolic resin glue be preferably the 25~35% of resin film quality, more preferably the 28~32% of resin film quality；Institute
Stating dry temperature is preferably 50~80 DEG C, and more preferably 60~70 DEG C；The present invention does not have particular/special requirement to the dry time, will
Resin film is dry to moisture content≤25%.
In the present invention, using spray coating method when carrying out glue spraying on resin film, to two surfaces up and down of resin film all into
Row glue spraying, and the phenolic resin bondline thickness on two surfaces is consistent.
The present invention is that directional structure board, middle layer two sides are followed successively by lateral ply, bamboo curtain splint from inside to outside according to middle layer
Layer, secondary outer layer sequence pass sequentially through adhesive layer bonding assembly, the secondary outer layer is longitudinal ply or bamboo mat layer；Exist again
Ornament materials is arranged in the upper and lower surface for the bottom plate young bird product that assembly obtains, and obtains slab.In the present invention, the kind of the ornament materials
Class is consistent with above scheme, and details are not described herein.
After obtaining slab, slab progress hot pressing is obtained the container bottom board containing directional structure board by the present invention.?
In the present invention, the hot pressing is preferably included: then pressurization heat transfer under the conditions of gauge pressure is 2.0~5.0MPa is in unit pressure
22~26kgf/cm2Under conditions of thermocompression forming, 90~100 DEG C of pressure release ejecting plates are cooled to after sizing；More preferably it is in gauge pressure
It pressurizes and conducts heat under the conditions of 3.0~4.0MPa, be then 23~25kgf/cm in unit pressure2Under conditions of thermocompression forming, sizing
After be cooled to 95~98 DEG C of pressure release ejecting plates.In the present invention, the temperature of the pressurization heat transfer and thermocompression forming is independent preferably
135~155 DEG C, more preferably 140~150 DEG C；The time of the pressurization heat transfer is preferably 0.5~1min/mm plate thickness, more preferably
For 0.6~0.8min/mm plate thickness；The time of the thermocompression forming is preferably 10~15min, more preferably 12~13min；It is described
The compression ratio of slab is preferably 20~28% in hot pressing, and more preferably 23~25%；Container bottom board after thermocompression forming
With a thickness of 28 ± 0.8mm, meet this field to the thickness requirement of container bottom board.
Preparation method provided by the invention be cooled to after thermocompression forming 90~100 DEG C can pressure release ejecting plate, relative to biography
(the good slab of assembly enters hot press to technique to " cold into cold go out " in controlling Preparation Method, opens vapour and is warming up to 140 DEG C of heat preservations, works as guarantor
The warm time, which reaches, to be cooled to 45 DEG C after requirement and can just be depressured ejecting plate) for, the time of cooling is shortened, production efficiency is improved；
And the compression ratio of slab drops to 20~28% from 35~40% in traditional handicraft in preparation method provided by the invention, from
And the utilization rate of bamboo wood is improved, moso bamboo consumption is reduced, further reduced the production cost of container bottom board.
After the hot pressing, hot pressing product of the present invention carries out saw side, obtains the container bottom board containing directional structure board.This hair
The bright concrete operation method to saw side does not have particular/special requirement, uses the saw side method of this field routine.
Below with reference to embodiment to container bottom board provided by the invention containing directional structure board and preparation method thereof into
Row detailed description, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
The small diameter bamboo that diameter is 3~8cm is prepared by rolling apparatus and rolls piece, braider is reused and is produced into
2500cm × 1350cm rolls curtain, and will roll curtain and be dried to moisture content in 95 DEG C of baking room is 20%；
With rotary-cut will be machined to veneer after log truncation that diameter is 16cm, and in 95 DEG C of baking room drying to containing
Water rate is 20%；
Spray phenolic resin glue (solid content 40%, pH value 10, viscosity 30 are carried out to polyethylene film using glue sprayer
Second), adhesive layer is obtained, in terms of area to be bonded, the dosage for controlling adhesive layer is 65g/m2, wherein the glue spraying of control phenolic resin
Measure 15.0g/m2, it is 25% that glue spraying, which after the completion dries polyethylene film at 50 DEG C to moisture content,；
Be directional structure board according to middle layer, directional structure board two sides be followed successively by adhesive layer, lateral ply, adhesive layer,
Roll curtain layer, adhesive layer, longitudinal ply, facing paper sequence carry out assembly, wherein directional structure board with a thickness of 18mm, it is horizontal
To ply with a thickness of 1.5mm, rolling curtain layer is that a piece of curtain that rolls forms, and single-sheet thickness 5mm, longitudinal ply is thickness
For 1.5mm, facing paper with a thickness of 0.25mm；
After the completion of assembly, hot pressing is carried out to slab, control hot pressing temperature is 135 DEG C, is first 2.0MPa condition in gauge pressure
Lower pressurization heat transfer, the time for heat transfer of pressurizeing are 0.5min/mm plate thickness, are then 22kgf/cm in unit pressure2Under conditions of heat
Pressure sizing 10min is cooled to 100 DEG C of pressure release ejecting plates after sizing, control compression ratio is 20%, obtains the bottom with a thickness of 28.0mm
Plate carries out saw side to gained bottom plate, obtains the container bottom board product containing directional structure board.
According to GB/T17657-2013 (wood-based plate and face artificial board physicochemical property experimental method) and GB/T19356-
2015 (composite board for bottom board of container standards) detect obtained container bottom board, and testing result is shown in Table 1.
Embodiment 2
The moso bamboo that diameter is 8cm or more is slightd into piece by cuing open thin bamboo strip equipment and being prepared into, braider is reused and is produced into 2500cm
× 1350cm bamboo slights curtain, and it is 18% that bamboo, which is slightd curtain to be dried to moisture content in 95 DEG C of baking room,；
With rotary-cut will be machined to veneer after log truncation that diameter is 10cm, and in 95 DEG C of baking room drying to containing
Water rate is 20%；
Impregnated phenolic resin glue (solid content 45%, pH value 12, viscosity 80 are carried out to polypropylene screen using steeping vat
Second), adhesive layer is obtained, in terms of area to be bonded, the dosage for controlling adhesive layer is 80g/m2, wherein the dipping of control phenolic resin
Glue amount 20.0g/m2, it is 23% that impregnation, which after the completion dries polypropylene screen at 80 DEG C to moisture content,；
Be directional structure board according to middle layer, directional structure board two sides be followed successively by adhesive layer, lateral ply, adhesive layer,
Bamboo curtain splint layer, adhesive layer, longitudinal ply, adhesive layer, bamboo mat sequence carry out assembly, wherein directional structure board with a thickness of
15mm, lateral ply with a thickness of 1.2mm, bamboo curtain splint layer is slightd curtain by 4 bamboos and is formed, single layer bamboo slight curtain with a thickness of 2.0mm, phase
Be equipped with adhesive layer between adjacent bamboo curtain splint, longitudinal ply be with a thickness of 1.2mm, bamboo mat with a thickness of 1.2mm；
After the completion of assembly, hot pressing is carried out to slab, control hot pressing temperature is 155 DEG C, is first 5.0MPa condition in gauge pressure
Lower pressurization heat transfer, the time for heat transfer of pressurizeing are 1min/mm plate thickness, are then 26kgf/cm in unit pressure2Under conditions of hot pressing
Be formed 12min, and 95 DEG C of pressure release ejecting plates are cooled to after sizing, and control compression ratio is 26%, obtains the bottom plate with a thickness of 28.0mm, right
Gained bottom plate carries out saw side, obtains the container bottom board product containing directional structure board.
According to GB/T17657-2013 (wood-based plate and face artificial board physicochemical property experimental method) and GB/T19356-
2015 (composite board for bottom board of container standards) detect obtained container bottom board, and testing result is shown in Table 1.
Embodiment 3
The small diameter bamboo that diameter is 3~8cm is prepared by rolling apparatus and rolls piece, braider is reused and is produced into
2500cm × 1350cm rolls curtain, will roll curtain and is dried to moisture content≤20% in 100 DEG C of baking room；
It is machined to veneer with rotary-cut after the log that diameter is 22cm is truncated, and dries and arrives in 100 DEG C of baking room
Moisture content≤20%；
To polystyrene film leaching phenolic resin glue (solid content 46%, pH value 13, viscosity are 50 seconds), bonded
Layer, in terms of area to be bonded, the dosage for controlling adhesive layer is 75g/m2, wherein the impregnation resin content 19.25g/m of control phenolic resin2,
Drying polypropylene screen at 60 DEG C after the completion of impregnation to moisture content is 22%；
Be directional structure board according to middle layer, directional structure board two sides be followed successively by adhesive layer, lateral ply, adhesive layer,
Roll curtain layer, adhesive layer, bamboo mat layer, adhesive layer, non-woven fabrics sequence carry out assembly, wherein directional structure board with a thickness of 8mm,
Lateral ply with a thickness of 1.5mm, roll curtain layer and roll curtain by 4 and form, single layer roll curtain with a thickness of 3mm, it is adjacent
Roll and be equipped with adhesive layer between curtain, longitudinal ply be with a thickness of 1.5mm, non-woven fabrics with a thickness of 1.0mm；
After the completion of assembly, hot pressing is carried out to slab, control hot pressing temperature is 145 DEG C, is first 4.0MPa condition in gauge pressure
Lower pressurization heat transfer, the time for heat transfer of pressurizeing are 0.8min/mm plate thickness, are then 25kgf/cm in unit pressure2Under conditions of heat
Pressure sizing 15min is cooled to 95 DEG C of pressure release ejecting plates after sizing, control compression ratio is 27.3%, obtains the bottom with a thickness of 28.0mm
Plate carries out saw side to gained bottom plate, obtains the container bottom board product containing directional structure board.
According to GB/T17657-2013 (wood-based plate and face artificial board physicochemical property experimental method) and GB/T19356-
2015 (composite board for bottom board of container standards) detect obtained container bottom board, and testing result is shown in Table 1.
Embodiment 4
The small diameter bamboo that diameter is 3~8cm is slightd into piece by cuing open thin bamboo strip equipment and being prepared into, braider is reused and is produced into
The bamboo of 2500cm × 1350cm slights curtain, and it is 16% that bamboo, which is slightd curtain to be dried to moisture content in 100 DEG C of baking room,；
It is machined to veneer with rotary-cut after the log that diameter is 14cm is truncated, and dries and arrives in 100 DEG C of baking room
Moisture content is 19%；
Spraying phenolic resin glue is carried out to polychloroethylene film, obtains adhesive layer, in terms of area to be bonded, controls adhesive layer
Dosage is 70g/m2, wherein the glue spraying amount 15.0g/m of control phenolic resin2, polypropylene screen is dried at 70 DEG C after the completion of glue spraying
It is 23% to moisture content；
Be directional structure board according to middle layer, directional structure board two sides be followed successively by adhesive layer, lateral ply, adhesive layer,
Bamboo curtain splint layer, adhesive layer, longitudinal ply, adhesive layer, fire-proof plate sequence carry out assembly, wherein directional structure board with a thickness of
12mm, lateral ply with a thickness of 1.5mm, bamboo curtain splint layer is slightd curtain by 3 bamboos and is formed, single layer bamboo slight curtain with a thickness of 1.7mm, phase
Adjacent bamboo, which is slightd, is equipped with polystyrene film between curtain, longitudinal ply be with a thickness of 1.5mm, fire-proof plate with a thickness of 5mm；
After the completion of assembly, hot pressing is carried out to slab, control hot pressing temperature is 150 DEG C, is first 4.5MPa condition in gauge pressure
Lower pressurization heat transfer, the time for heat transfer of pressurizeing are 0.6min/mm plate thickness, are then 24kgf/cm in unit pressure2Under conditions of heat
Pressure sizing 12min is cooled to 95 DEG C of pressure release ejecting plates after sizing, control compression ratio is 26%, obtains the bottom plate with a thickness of 28.0mm,
Saw side is carried out to gained bottom plate, obtains the container bottom board product containing directional structure board.
According to GB/T17657-2013 (wood-based plate and face artificial board physicochemical property experimental method) and GB/T19356-
2015 (composite board for bottom board of container standards) detect obtained container bottom board, and testing result is shown in Table 1.
The performance test results of the container bottom board containing directional structure board prepared in 1 Examples 1 to 4 of table
As can be seen from Table 1, the container bottom board static bending strength height provided by the invention containing directional structure board, springform
It measures, dipping and stripping performance is good, is fully able to meet standard GB/T/T19356-2015 (composite board for bottom board of container mark
It is quasi-) in requirement.
As seen from the above embodiment, the preparation method of the container bottom board provided by the invention containing directional structure board uses
The resin film of impregnation replaces phenolic resin glue, and the process for eliminating bamboo curtain splint impregnation and drying again, production method is simpler, and drops
The low requirement to bamboo curtain splint layer and ply moisture content, and only need to cool in hot pressing 90~100 DEG C can ejecting plate, reach
The purpose for reducing energy consumption, improving production efficiency, reducing cost.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of container bottom board containing directional structure board, middle layer is directional structure board, and middle layer two sides are symmetrical structure,
Middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；The middle layer, laterally list
Plate layer, bamboo curtain splint layer and secondary outer layer are connected by adhesive layer；The bamboo curtain splint layer is thin bamboo strips used for weaving curtain or rolls curtain；The secondary outer layer is longitudinal
Ply or bamboo mat layer；The adhesive layer is the resin film that surface is coated with phenolic resin glue；
The material of the resin film is polyethylene, polypropylene or polystyrene；
The preparation method of the container bottom board the following steps are included:
The moso bamboo for being 3~8cm using diameter is prepared as raw material and rolls curtain, moisture content≤20% for rolling curtain；Or with straight
Moso bamboo of the diameter greater than 8cm is raw material, and thin bamboo strips used for weaving curtain, moisture content≤20% of the thin bamboo strips used for weaving curtain is prepared；It is described to roll curtain or bamboo
Thin bamboo strip curtain is bamboo curtain splint layer raw material；
Rounding is dried at after veneer to moisture content≤20%；
It dries after resin film is carried out impregnation or glue spraying to moisture content≤25%, the glue is phenolic resin glue, obtains adhesive layer；
It is that directional structure board, middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer from inside to outside according to middle layer
Sequence passes sequentially through the adhesive layer bonding assembly, and the secondary outer layer is longitudinal ply or bamboo mat layer；It is obtained again in assembly
Ornament materials is arranged in the upper and lower surface of bottom plate young bird product, obtains slab；
Slab progress hot pressing is obtained into the container bottom board containing directional structure board.
2. container bottom board according to claim 1, which is characterized in that the bamboo curtain splint layer includes 1~4 bamboo curtain splint；
When the bamboo curtain splint is greater than 1, connected between adjacent two panels bamboo curtain splint by adhesive layer.
3. container bottom board according to claim 1, which is characterized in that the decorative layer is facing paper, bamboo mat, rotary-cut
Bamboo and wood matter veneer, non-woven fabrics or fire-proof plate.
4. container bottom board according to any one of claims 1 to 3, which is characterized in that the thickness of the directional structure board
Degree is 8~18mm；
It is described transverse direction ply with a thickness of 1.2~1.5mm；
The single-sheet thickness of the thin bamboo strips used for weaving curtain is 1.7~2.0mm；The single-sheet thickness for rolling curtain is 2.5~5.5mm；
It is described longitudinal direction ply with a thickness of 1.2~1.5mm；The bamboo mat layer with a thickness of 1.0~1.2mm.
5. the preparation method of container bottom board described in Claims 1 to 4 any one, comprising the following steps:
The moso bamboo for being 3~8cm using diameter is prepared as raw material and rolls curtain, moisture content≤20% for rolling curtain；Or with straight
Moso bamboo of the diameter greater than 8cm is raw material, and thin bamboo strips used for weaving curtain, moisture content≤20% of the thin bamboo strips used for weaving curtain is prepared；It is described to roll curtain or bamboo
Thin bamboo strip curtain is bamboo curtain splint layer raw material；
Rounding is dried at after veneer to moisture content≤20%；
It dries after resin film is carried out impregnation or glue spraying to moisture content≤25%, the glue is phenolic resin glue, obtains adhesive layer；
It is that directional structure board, middle layer two sides are followed successively by lateral ply, bamboo curtain splint layer, secondary outer layer from inside to outside according to middle layer
Sequence passes sequentially through the adhesive layer bonding assembly, and the secondary outer layer is longitudinal ply or bamboo mat layer；It is obtained again in assembly
Ornament materials is arranged in the upper and lower surface of bottom plate young bird product, obtains slab；
Slab progress hot pressing is obtained into the container bottom board containing directional structure board.
6. preparation method according to claim 5, which is characterized in that it is 2.0~5.0MPa that the hot pressing, which includes: in gauge pressure,
Under the conditions of pressurize heat transfer, then unit pressure be 22~26kgf/cm2Under conditions of thermocompression forming, be cooled to 90 after sizing~
100 DEG C of pressure release ejecting plates.
7. preparation method according to claim 6, which is characterized in that the temperature of the pressurization heat transfer and thermocompression forming is independent
It is 135~155 DEG C；The time of the pressurization heat transfer is 0.5~1min/mm plate thickness；The time of the thermocompression forming be 10~
15min。
8. preparation method according to claim 5, which is characterized in that the solid content of the phenolic resin glue be 40~
46%；The pH value of the phenolic resin glue is 10~13；Phenolic resin glue 4# glasss of viscosity of painting under the conditions of 25 DEG C are 30
~80 seconds.
9. the preparation method according to claim 5 or 8, which is characterized in that the glue amount of the impregnation or glue spraying independently is
The 25~35% of resin film weight.
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| CN107283550A (en) * | 2017-07-11 | 2017-10-24 | 浙江可信竹木有限公司 | The bamboo and wood recombinant material composite plate and its processing technology of a kind of utilization waste material |
| CN108544583B (en) * | 2018-04-19 | 2020-05-15 | 江苏七巧工艺木制品股份有限公司 | Wood working handles integration system |
| CN114311196A (en) * | 2022-01-05 | 2022-04-12 | 仁化县奥达胶合板有限公司 | Fire-fighting plywood and manufacturing process thereof |
| CN115030433B (en) * | 2022-07-01 | 2024-06-25 | 何其佳 | Composite decorative plate and manufacturing method thereof |
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