CN106493802A - A kind of container bottom board containing directional structure board and preparation method thereof - Google Patents
A kind of container bottom board containing directional structure board and preparation method thereof Download PDFInfo
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- CN106493802A CN106493802A CN201611225636.1A CN201611225636A CN106493802A CN 106493802 A CN106493802 A CN 106493802A CN 201611225636 A CN201611225636 A CN 201611225636A CN 106493802 A CN106493802 A CN 106493802A
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- Prior art keywords
- bamboo
- layer
- curtain
- container bottom
- curtain splint
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Classifications
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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
-
- 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 invention provides a kind of container bottom board containing directional structure board, intermediate layer is directional structure board, and intermediate layer both sides are symmetrical structure, and intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；The intermediate layer, horizontal ply, bamboo curtain splint layer and secondary outer layer are connected by adhesive layer；The bamboo curtain splint is slightd curtain for bamboo or rolls curtain；Described outer layer is longitudinal ply or bamboo mat layer；The adhesive layer has the resin film of phenolic resin glue for surface-coated.The container bottom board that the present invention is provided carries out the gluing of each layer using the resin film that surface-coated has phenolic resin glue, so as to reduce the requirement in preparation process to each layer moisture content, after bamboo curtain splint is dried, moisture content can carry out assembly less than 20%, not only save the drying time of bamboo curtain splint, reduce energy waste, and also reduce bamboo curtain splint impregnation and dry two procedures, the timber intensity that produces is high, dipping and stripping performance is good.
Description
Technical field
The present invention relates to a kind of technical field of composite board, more particularly to a kind of container bottom containing directional structure board
Plate and preparation method thereof.
Background technology
Container is largely used in cargo transport as the main tool of transport；In recent years, with the frequency of trade contacts
Numerous, container yield is also sharply increased, and requires also more and more higher to the base plate performance of container.
Traditional container bottom board includes full bamboo, full wooden container base plate and bamboo and wood container bottom board, wherein full bamboo packaging
Bottom plate is made up of bamboo wood, will bamboo fragmentation form thin bamboo strip, then bamboo chip is woven into after bamboo mat, bamboo curtain splint drying with rope,
Again bamboo mat, bamboo curtain splint are carried out impregnation, dried again, in hot press die intracavity vertically and horizontally alternate cross laminates of bamboo curtain splint, then face is carried out
Flaggy, substrate assembly, substrate upper and lower surface are that panel or impregnated paper veneer layer, hot pressing after laying are formed, and form vertically and horizontally bamboo curtain splint
Alternate hierarchical structure, is all bondd by phenolic resin glue between adjacent level.Bamboo and wood container bottom board be then one kind with wooden list
Plate and bamboo mat, bamboo curtain splint are that primary raw material is compound to be prepared, and is veneer and bamboo mat, bamboo curtain warp element first drying, applies adhesive, then enter
Row secondary drying (drying glue), a kind of artificial board that assembly is made 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 less than 12%, the moisture content of bamboo mat and bamboo curtain splint just can carry out follow-up immersing glue process less than 6%, otherwise can
Cannot just suck certain phenolic resin glue amount when causing impregnation, and the bamboo mat and bamboo curtain splint after impregnation needs to dry again to aqueous
Rate just can carry out assembly less than 15%, cannot otherwise meet the requirement of the physical and mechanical properties such as intensity and the dipping and stripping of plate.
Content of the invention
In view of this, present invention aim at providing that 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 bamboo curtain splint, bamboo mat need not be entered
Row impregnation and dry again and glue gluing process worn by veneer, improve production efficiency, reduce repetitive operation, reduce the energy and glue disappears
Consumption.
In order to realize that foregoing invention purpose, the present invention provide technical scheme below：
The invention provides a kind of container bottom board containing directional structure board, intermediate layer is directional structure board, intermediate layer
Both sides are symmetrical structure, and intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；Institute
State intermediate layer, horizontal ply, bamboo curtain splint layer and secondary outer layer to connect by adhesive layer；The bamboo curtain splint is slightd curtain for bamboo or rolls curtain；Institute
Time outer layer is stated for longitudinal ply or bamboo mat layer；The adhesive layer has the resin film of phenolic resin glue for surface-coated.
Preferably, the bamboo curtain splint layer includes 1～4 bamboo curtain splint；
When the bamboo curtain splint is more than 1, connected by adhesive layer between adjacent two panels bamboo curtain splint.
Preferably, the material of the resin film is polyethylene, polypropylene, polystyrene or polrvinyl 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 thickness of the directional structure board is 8～18mm；
The thickness of the horizontal ply is 1.2～1.5mm；
It is 1.7～2.0mm that the bamboo slights the single-sheet thickness of curtain；The single-sheet thickness for rolling curtain is 2.5～5.5mm；
The thickness of longitudinal ply is 1.2～1.5mm；The thickness of the bamboo mat layer is 1.0～1.2mm.
The invention provides a kind of preparation method of container bottom board described in such scheme, comprises the following steps：
Phyllostachys pubescens Mazei ex H.de Lebaie with a diameter of 3～8cm is prepared and rolls curtain as raw material, moisture content≤20% for rolling curtain；Or
With the Phyllostachys pubescens Mazei ex H.de Lebaie with diameter greater than 8cm as raw material, prepare bamboo and slight curtain, the bamboo slights moisture content≤20% of curtain；Described roll curtain
Or thin bamboo strips used for weaving curtain is bamboo curtain splint layer raw material；
Rounding is dried to moisture content≤20% into after veneer；
Carry out drying to moisture content≤25% after impregnation or glue spraying by resin film, the glue is phenolic resin glue, is glued
Knot layer；
It is that directional structure board, intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer from inside to outside according to intermediate layer
The order of layer passes sequentially through the tack coat bonding assembly, and described outer layer is longitudinal ply or bamboo mat layer；Obtain in assembly again
The upper and lower surface of the base plate young bird product for arriving arranges ornament materials, obtains slab；
The slab is carried out hot pressing and obtains 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, be cooled to 90～100 DEG C of pressure release ejecting plates 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 thicknesss of slab；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；
Painting 4# cup viscosity of the phenolic resin glue under the conditions of 25 DEG C is 30～80 seconds.
Preferably, the glue amount of the impregnation or glue spraying independently is the 25～35% of resin film weight.
The invention provides a kind of container bottom board containing directional structure board, intermediate layer is directional structure board, intermediate layer
Both sides are symmetrical structure, and intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；Institute
State intermediate layer, horizontal ply, bamboo curtain splint layer and secondary outer layer to connect by adhesive layer；The bamboo curtain splint is slightd curtain for bamboo or rolls curtain；Institute
Time outer layer is stated for longitudinal ply or bamboo mat layer；The adhesive layer has the resin film of phenolic resin glue for surface-coated.The present invention
The resin film for having phenolic resin glue using surface attachment carries out the gluing of each layer, instead of in traditional method directly using phenolic aldehyde tree
The method that fat glue carries out gluing, so as to reduce the requirement in preparation process to each layer moisture content, rolls after curtain/bamboo curtain splint is dried and contains
Water rate can carry out assembly less than 20%, not only save the drying time of bamboo curtain splint, reduce energy waste, and the sheet material for obtaining
Intensity is high, dipping and stripping performance is good.The result of embodiment shows that the rift grain MOR of the container bottom board that the present invention is provided is
87.9～93.3MPa, band MOR be 37.1～38.6MPa, modulus of elasticity parellel to grain be 10076～10105MPa, band
Elastic modelling quantity is 3576～3635MPa, and dipping and stripping performance be fully able to meet GB/T19536-2015 (used for bottom plate of container
Plywood standard) requirement.
The preparation method of container bottom board described in a kind of such scheme that the present invention is provided, using impregnation or the tree of glue spraying
Adipose membrane replaces phenolic resin glue, eliminates bamboo curtain splint impregnation and the operation that dries again, and production method is simpler, and reduces to bamboo
Curtain layer and the requirement of ply moisture content, have reached reducing energy consumption, minimizing bamboo curtain splint, bamboo mat impregnation, drying and veneer and have worn glue gluing
Etc. operation, improve production efficiency, the purpose of reduces cost.
Description of the drawings
Fig. 1 is the structural representation of the container bottom board containing directional structure board provided in an embodiment of the present invention；
In Fig. 1：1- decorative layers, 2- outer layer, 3- bamboo curtain splint layers, the horizontal plies of 4-, 5- intermediate layers, 6- adhesive layers.
Specific embodiment
The invention provides a kind of container bottom board containing directional structure board, intermediate layer is directional structure board, intermediate layer
Both sides are symmetrical structure, and intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；Described
Intermediate layer, horizontal ply, bamboo curtain splint layer and secondary outer layer are connected by adhesive layer；The bamboo curtain splint is slightd curtain for bamboo or rolls curtain；Described
Secondary outer layer is longitudinal ply or bamboo mat layer；The adhesive layer has the resin film of phenolic resin glue for surface-coated.
The container bottom board that the present invention is provided includes intermediate layer, and the intermediate layer is directional structure board.Directional structure board
(OSB plates) is also called oriented structure chipboard, is with small dimension wood, thinnings, reel as raw material, is processed into plane by special equipment
Piece (generally 40～100mm length, 5～20mm are wide, 0.3～0.7mm thick), through flaking, drying, applying glue, orienting spreading, is hot pressed into
A kind of directive construction sheet material that the techniques such as type are made, internal for directive construction, non junction, seamless, slight crack, overall uniformity
Good, MOR, internal bond strength and elastic modelling quantity 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.
The container bottom board that the present invention is provided is symmetrical structure, forms axial symmetry result with intermediate layer as axis of symmetry, middle
Layer both sides are symmetrical structure, be bonded in the intermediate layer both sides for horizontal ply.In the present invention, the horizontal ply
Ply for the transversely arranged composition of veneer；The veneer thickness of the horizontal 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 horizontal ply
Horizontally-spliced obtaining is carried out using veneer；The spliced veneer width is more than OSB plate width；Length of the present invention to veneer
Without particular/special requirement, using well-known to those skilled in the art；The veneer number that the present invention is used to horizontal ply
Without 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 with the longitudinal direction of directional structure board, then be longitudinal veneer,
The rift grain direction of the veneer is vertical with the longitudinal direction of directional structure board, then be horizontal veneer.
The container bottom board that the present invention is provided includes being bonded in the bamboo curtain splint layer on the outside of the horizontal ply.In the present invention
In, the bamboo curtain splint is slightd curtain for bamboo 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 more than 1, connected by tack coat between two panels bamboo curtain splint.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 Phyllostachys pubescens Mazei ex H.de Lebaie of small diameter (a diameter of 3～8cm), in extending
The use range of path Phyllostachys pubescens Mazei ex H.de Lebaie, reduces the preparation cost of container bottom board.
The container bottom board that the present invention is provided includes being bonded in the secondary outer layer on the outside of the bamboo curtain splint layer.In the present invention, institute
Time outer layer is stated for longitudinal ply or bamboo mat layer；Veneer used by longitudinal ply is consistent with horizontal ply, and here is no longer
Repeat；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 intermediate layer, horizontal ply, bamboo curtain splint layer and secondary outer layer pass sequentially through tack coat connection；Institute
State tack coat has the resin film of phenolic resin glue for surface-coated.In the present invention, the material of the resin film is preferably poly- second
Alkene, polypropylene, polystyrene or polrvinyl chloride；In terms of the area in face to be bonded, the consumption of the tack coat is preferably 65～
80g/m2, more preferably 70～75g/m2；The thickness of the resin film is preferably 15～25, more preferably 18～20 (1
=0.01mm)；The coated weight of the phenolic resin glue is preferably 25～35%, more preferably 28 of resin film quality in tack coat
～32%.
The present invention replaces phenolic resin glue to carry out the glue between each layer using the resin film that surface attachment has phenolic resin glue
Close, make each layer in preparation process without the need for direct impregnation or glue spraying, the suction glue amount of bamboo curtain splint, bamboo mat, ply need not be considered, from
And reduce the requirement in preparation process to each flaggy moisture content.
The container bottom board that the present invention is provided includes the decorative layer on the outside of time outer layer.In the present invention, the decorative layer is excellent
Elect facing paper, bamboo mat, rotary-cut bamboo and wood matter veneer, non-woven fabrics, artificial veneer or PLASTIC LAMINATED as.The dress of unlike material in this area
Decorations layer has different thickness requirements, the present invention not to have particular/special requirement to the thickness of decorative layer, using the general thickness of this area be
Can.
In the present invention, it is connected without using tack coat with secondary outer layer when the decorative layer is facing paper, 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
During plate, need to be connected with secondary outer layer using tack coat 6.
The invention provides a kind of preparation method of container bottom board described in such scheme, comprises the following steps：
Phyllostachys pubescens Mazei ex H.de Lebaie with a diameter of 3～8cm is prepared and rolls curtain as raw material, moisture content≤20% for rolling curtain；Or
With the Phyllostachys pubescens Mazei ex H.de Lebaie with diameter greater than 8cm as raw material, prepare bamboo and slight curtain, the bamboo slights moisture content≤20% of curtain；Described roll curtain
Or thin bamboo strips used for weaving curtain is bamboo curtain splint layer raw material；
Rounding is dried to moisture content≤20% into after veneer；
Carry out drying to moisture content≤25% after impregnation or glue spraying by resin film, the glue is phenolic resin glue, is glued
Knot layer；
It is that directional structure board, intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer from inside to outside according to intermediate layer
The order of layer passes sequentially through the tack coat bonding assembly, and described outer layer is longitudinal ply or bamboo mat layer；Obtain in assembly again
The upper and lower surface of the base plate young bird product for arriving arranges ornament materials, obtains slab；
The slab is carried out hot pressing and obtains the container bottom board containing directional structure board.
The present invention with the Phyllostachys pubescens Mazei ex H.de Lebaie of a diameter of 3～8cm as raw material, prepare and roll curtain, described roll curtain moisture content≤
20%；Or with the Phyllostachys pubescens Mazei ex H.de Lebaie with diameter greater than 8cm as raw material, prepare bamboo and slight curtain, the bamboo slights moisture content≤20% of curtain；Described
It is bamboo curtain splint layer raw material to roll curtain or thin bamboo strips used for weaving curtain.In the present invention, the diameter for preparing the Phyllostachys pubescens Mazei ex H.de Lebaie for rolling curtain is preferably 4～7cm,
More preferably 5～6cm；The diameter for preparing the Phyllostachys pubescens Mazei ex H.de Lebaie that bamboo slights curtain is preferably 9～15cm, more preferably 10～12cm.
When preparation rolls curtain, Phyllostachys pubescens Mazei ex H.de Lebaie is rolled and obtains rolling piece by the present invention, will roll piece and be woven into and roll curtain；Preparing
During thin bamboo strips used for weaving curtain, small diameter Phyllostachys pubescens Mazei ex H.de Lebaie is cutd open the thin bamboo strip and obtains bamboo and slightd by the present invention, then bamboo is slightd is woven into bamboo and slights curtain.In the present invention, described
Roll the thickness that curtain slights curtain with bamboo consistent with such scheme, will not be described here.
After obtaining rolling curtain/bamboo curtain splint, the present invention will roll curtain or bamboo curtain splint drying to moisture content≤20%, obtain bamboo curtain splint layer former
Material.In the present invention, the temperature of the drying is preferably 95～100 DEG C, more preferably 96～98 DEG C；The present invention to dry when
Between without particular/special requirement, curtain/bamboo curtain splint drying will be rolled to moisture content≤20%；Present invention preferably uses drying shed is to rolling
Curtain/bamboo curtain splint is dried.In the present invention, the moisture content preferably 15～20%, more preferably 16 for rolling curtain or bamboo curtain splint
～18%.
In the art, small diameter bamboo (a diameter of 3～8cm) range of application is narrower, be typically used as clothes airing rod, besom handle,
Plant vegetables built etc., and the present invention prepares container bottom board with small diameter bamboo as raw material, improves small diameter bamboo value, and enters
One step reduces the cost of container bottom board.
Rounding into veneer and is dried to moisture content≤20% by the present invention.In the present invention, the diameter of the log
Preferably 8～30cm, more preferably 14～24cm；Present invention preferably uses peeler carries out rotary-cut；Wood of the present invention to log
Assortment class does not have particular/special requirement, using the conventional log in this area；The rotary-cut obtains the thickness and such scheme of veneer
Unanimously, will not be described here；The mode of the drying is consistent with the drying mode for rolling curtain/bamboo curtain splint, will not be described here.At this
In invention, the moisture content of the veneer is preferably 15～20%, more preferably 16～18%.
Carry out drying to moisture content≤25% after impregnation or glue spraying by resin film, the glue is phenolic resin glue, is glued
Knot layer.In the present invention, the material of the resin film is consistent with such scheme, will not be described here；The resin film aqueous
Rate is preferably 20～25%, more preferably 22～23%；The solid content of the phenolic resin glue is preferably 40～46%, more preferably
For 43～45%；The pH value of the phenolic resin glue is preferably 10～13, more preferably 11～12；The phenolic resin glue is 25
Painting 4# cups viscosity under the conditions of DEG C is preferably 30～80 seconds, 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
State dry temperature and be preferably 50～80 DEG C, more preferably 60～70 DEG C；The present invention does not have particular/special requirement to the dry time, will
Resin film drying is to moisture content≤25%.
In the present invention, when carrying out glue spraying using spraying process on resin film, two surfaces up and down of resin film are all entered
Row glue spraying, and the phenolic resin bondline thickness on two surfaces is consistent.
The present invention is that directional structure board, intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint from inside to outside according to intermediate layer
Layer, the order of secondary outer layer pass sequentially through the tack coat bonding assembly, and described outer layer is longitudinal ply or bamboo mat layer；Exist again
The upper and lower surface of the base plate young bird product that assembly is obtained arranges ornament materials, obtains slab.In the present invention, the kind of the ornament materials
Class is consistent with such scheme, will not be described here.
After obtaining slab, the slab is carried out hot pressing and obtains the container bottom board containing directional structure board by the present invention.?
In the present invention, the hot pressing is preferably included：Pressurization heat transfer under the conditions of gauge pressure is 2.0～5.0MPa, then in unit pressure be
22～26kgf/cm2Under conditions of thermocompression forming, be cooled to 90～100 DEG C of pressure release ejecting plates after sizing；More preferably in gauge pressure it is
Under the conditions of 3.0～4.0MPa pressurization heat transfer, then unit pressure be 23～25kgf/cm2Under conditions of thermocompression forming, sizing
After be cooled to 95～98 DEG C of pressure release ejecting plates.In the present invention, the temperature independence of the pressurization heat transfer and thermocompression forming is preferably
135～155 DEG C, more preferably 140～150 DEG C；The time of the pressurization heat transfer is preferably 0.5～1min/mm thicknesss of slab, more preferably
For 0.6～0.8min/mm thicknesss of slab；The time of the thermocompression forming is preferably 10～15min, more preferably 12～13min；Described
In hot pressing, the compression ratio of slab is preferably 20～28%, more preferably 23～25%；Container bottom board after thermocompression forming
Thickness is 28 ± 0.8mm, meets thickness requirement of this area to container bottom board.
The present invention provide preparation method be cooled to 90～100 DEG C after thermocompression forming by pressure release ejecting plate, relative to biography
(the good slab of assembly enters hot press to " cold enter cold go out " technique in controlling Preparation Method, opens vapour and is warmed up to 140 DEG C of insulations, works as guarantor
The warm time reach requirement after cool to 45 DEG C just can blood pressure lowering ejecting plate) for, shorten the time of cooling, improve production efficiency；
And the compression ratio of slab from traditional handicraft 35～40% drops to 20～28% in the preparation method that the present invention is provided, from
And the utilization rate of bamboo wood is improve, Phyllostachys pubescens Mazei ex H.de Lebaie consumption is reduced, the production cost of container bottom board is reduce further.
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
The bright concrete operation method to sawing side does not have particular/special requirement, using the conventional saw side method in this area.
Container bottom board containing directional structure board for providing of the invention and preparation method thereof is entered with reference to embodiment
Row detailed description, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1
The small diameter bamboo of a diameter of 3～8cm is prepared into by rolling apparatus and rolls piece, reused braider and produce into
2500cm × 1350cm rolls curtain, will roll curtain and is dried to moisture content in 95 DEG C of baking room for 20%；
Veneer is machined to rotary-cut after the log of a diameter of 16cm is blocked, and dry in 95 DEG C of baking room to containing
Water rate is 20%；
Spray phenolic resin glue is carried out to polyethylene film using glue sprayer, and (solid content is 40%, and pH value is 10, and viscosity is 30
Second), tack coat is obtained, in terms of area to be bonded, the consumption for controlling tack coat is 65g/m2, wherein control the glue spraying of phenolic resin
Amount 15.0g/m2, it is 25% that polyethylene film is dried at 50 DEG C after the completion of glue spraying moisture content；
According to intermediate layer be directional structure board, directional structure board both sides be followed successively by tack coat, horizontal ply, tack coat,
Rolling curtain layer, tack coat, longitudinal ply, the order of facing paper carries out assembly, and the wherein thickness of directional structure board is 18mm, horizontal
Being 1.5mm to the thickness of ply, rolling curtain layer and curtain composition is rolled for a piece of, single-sheet thickness is 5mm, and longitudinal ply is thickness
For 1.5mm, the thickness of facing paper is 0.25mm；
After the completion of assembly, hot pressing is carried out to slab, hot pressing temperature is controlled for 135 DEG C, be 2.0MPa conditions first in gauge pressure
Lower pressurization heat transfer, pressurize heat transfer time be 0.5min/mm thicknesss of slab, then unit pressure be 22kgf/cm2Under conditions of heat
Pressure sizing 10min, is cooled to 100 DEG C of pressure release ejecting plates after sizing, it is 20% to control compression ratio, obtains the bottom that thickness is 28.0mm
Plate, carries out saw side to gained base 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 technique) and GB/T19356-
To the container bottom board for obtaining, 2015 (composite board for bottom board of container standards) detect that testing result is shown in Table 1.
Embodiment 2
The Phyllostachys pubescens Mazei ex H.de Lebaie of a diameter of more than 8cm is slightd piece by cuing open thin bamboo strip equipment and being prepared into, braider is reused and is produced into 2500cm
× 1350cm bamboos slight curtain, bamboo is slightd curtain and is dried to moisture content in 95 DEG C of baking room for 18%；
Veneer is machined to rotary-cut after the log of a diameter of 10cm is blocked, and dry in 95 DEG C of baking room to containing
Water rate is 20%；
Impregnated phenolic resin glue is carried out to polypropylene screen using steeping vat, and (solid content is 45%, and pH value is 12, and viscosity is 80
Second), tack coat is obtained, in terms of area to be bonded, the consumption for controlling tack coat is 80g/m2, wherein control the dipping of phenolic resin
Glue amount 20.0g/m2, it is 23% that polypropylene screen is dried at 80 DEG C after the completion of impregnation moisture content；
According to intermediate layer be directional structure board, directional structure board both sides be followed successively by tack coat, horizontal ply, tack coat,
Bamboo curtain splint layer, tack coat, longitudinal ply, tack coat, the order of bamboo mat carry out assembly, and the thickness of wherein directional structure board is
15mm, the thickness of horizontal ply is 1.2mm, and bamboo curtain splint layer is slightd curtain by 4 bamboos and constituted, and it is 2.0mm that monolayer bamboo slights the thickness of curtain, phase
Tack coat is equipped between adjacent bamboo curtain splint, it is 1.2mm that longitudinal ply is thickness, and the thickness of bamboo mat is 1.2mm；
After the completion of assembly, hot pressing is carried out to slab, hot pressing temperature is controlled for 155 DEG C, be 5.0MPa conditions first in gauge pressure
Lower pressurization heat transfer, pressurize heat transfer time be 1min/mm thicknesss of slab, then unit pressure be 26kgf/cm2Under conditions of hot pressing
Sizing 12min, is cooled to 95 DEG C of pressure release ejecting plates after sizing, it is 26% to control compression ratio, obtains the base plate that thickness is 28.0mm, right
Gained base 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 technique) and GB/T19356-
To the container bottom board for obtaining, 2015 (composite board for bottom board of container standards) detect that testing result is shown in Table 1.
Embodiment 3
The small diameter bamboo of a diameter of 3～8cm is prepared into by rolling apparatus and rolls piece, reused braider and produce into
2500cm × 1350cm rolls curtain, will roll curtain and is dried to moisture content≤20% in 100 DEG C of baking room；
Veneer is machined to rotary-cut after the log of a diameter of 22cm is blocked, and is dried in 100 DEG C of baking room and is arrived
Moisture content≤20%；
To polystyrene film leaching phenolic resin glue (solid content is 46%, and pH value is 13, and viscosity is 50 seconds), bondd
Layer, in terms of area to be bonded, the consumption for controlling tack coat is 75g/m2, wherein control the impregnation resin content 19.25g/m of phenolic resin2,
It is 22% that polypropylene screen is dried at 60 DEG C after the completion of impregnation moisture content；
According to intermediate layer be directional structure board, directional structure board both sides be followed successively by tack coat, horizontal ply, tack coat,
Rolling curtain layer, tack coat, bamboo mat layer, tack coat, the order of non-woven fabrics carries out assembly, and the wherein thickness of directional structure board is 8mm,
Laterally the thickness of ply is 1.5mm, rolls curtain layer and rolls curtain by 4 and constitutes, and it is 3mm that monolayer rolls the thickness of curtain, adjacent
Rolling and tack coat is equipped between curtain, it is 1.5mm that longitudinal ply is thickness, and the thickness of non-woven fabrics is 1.0mm；
After the completion of assembly, hot pressing is carried out to slab, hot pressing temperature is controlled for 145 DEG C, be 4.0MPa conditions first in gauge pressure
Lower pressurization heat transfer, pressurize heat transfer time be 0.8min/mm thicknesss of slab, then unit pressure be 25kgf/cm2Under conditions of heat
Pressure sizing 15min, is cooled to 95 DEG C of pressure release ejecting plates after sizing, it is 27.3% to control compression ratio, obtains the bottom that thickness is 28.0mm
Plate, carries out saw side to gained base 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 technique) and GB/T19356-
To the container bottom board for obtaining, 2015 (composite board for bottom board of container standards) detect that testing result is shown in Table 1.
Embodiment 4
The small diameter bamboo of a diameter of 3～8cm is slightd 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, bamboo is slightd curtain and is dried to moisture content in 100 DEG C of baking room for 16%；
Veneer is machined to rotary-cut after the log of a diameter of 14cm is blocked, and is dried in 100 DEG C of baking room and is arrived
Moisture content is 19%；
Spraying phenolic resin glue is carried out to polychloroethylene film, tack coat is obtained, in terms of area to be bonded, tack coat is controlled
Consumption is 70g/m2, wherein control glue spraying amount 15.0g/m of phenolic resin2, polypropylene screen is dried at 70 DEG C after the completion of glue spraying
It is 23% to moisture content；
According to intermediate layer be directional structure board, directional structure board both sides be followed successively by tack coat, horizontal ply, tack coat,
Bamboo curtain splint layer, tack coat, longitudinal ply, tack coat, the order of PLASTIC LAMINATED carry out assembly, and the thickness of wherein directional structure board is
12mm, the thickness of horizontal ply is 1.5mm, and bamboo curtain splint layer is slightd curtain by 3 bamboos and constituted, and it is 1.7mm that monolayer bamboo slights the thickness of curtain, phase
Adjacent bamboo to be slightd and be equipped with polystyrene film between curtain, and it is 1.5mm that longitudinal ply is thickness, and the thickness of PLASTIC LAMINATED is 5mm；
After the completion of assembly, hot pressing is carried out to slab, hot pressing temperature is controlled for 150 DEG C, be 4.5MPa conditions first in gauge pressure
Lower pressurization heat transfer, pressurize heat transfer time be 0.6min/mm thicknesss of slab, then unit pressure be 24kgf/cm2Under conditions of heat
Pressure sizing 12min, is cooled to 95 DEG C of pressure release ejecting plates after sizing, it is 26% to control compression ratio, obtains the base plate that thickness is 28.0mm,
Saw side is carried out to gained base plate, the container bottom board product containing directional structure board is obtained.
According to GB/T17657-2013 (wood-based plate and face artificial board physicochemical property experimental technique) and GB/T19356-
To the container bottom board for obtaining, 2015 (composite board for bottom board of container standards) detect that testing result is shown in Table 1.
The performance test results of the container bottom board containing directional structure board prepared in 1 embodiment 1～4 of table
As can be seen from Table 1, the height of the container bottom board MOR containing directional structure board of present invention offer, springform
Measure, dipping and stripping performance is good, be fully able to meet standard GB/T/T19356-2015 (composite board for bottom board of container marks
Accurate) in requirement.
As seen from the above embodiment, the preparation method of the container bottom board containing directional structure board that the present invention is provided is used
The resin film of impregnation replaces phenolic resin glue, eliminates bamboo curtain splint impregnation and the operation that dries again, and production method is simpler, and drops
The low requirement to bamboo curtain splint layer and ply moisture content, and ejecting plate by only needing to cool to 90～100 DEG C in hot pressing, reach
Reducing energy consumption, improve production efficiency, the purpose of reduces cost.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of container bottom board containing directional structure board, intermediate layer are directional structure board, and intermediate layer both sides are symmetrical structure,
Intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer layer and decorative layer from inside to outside；The intermediate layer, laterally list
Flaggy, bamboo curtain splint layer and secondary outer layer are connected by adhesive layer；The bamboo curtain splint is slightd curtain for bamboo or rolls curtain；Described outer layer is single for longitudinal direction
Flaggy or bamboo mat layer；The adhesive layer has the resin film of phenolic resin glue for surface-coated.
2. container bottom board according to claim 1, it is characterised in that the bamboo curtain splint layer includes 1～4 bamboo curtain splint；
When the bamboo curtain splint is more than 1, connected by adhesive layer between adjacent two panels bamboo curtain splint.
3. container bottom board according to claim 1 and 2, it is characterised in that the material of the resin film is polyethylene, poly-
Propylene, polystyrene or polrvinyl chloride.
4. container bottom board according to claim 1, it is characterised in that the decorative layer is facing paper, bamboo mat, rotary-cut
Bamboo and wood matter veneer, non-woven fabrics, artificial veneer or PLASTIC LAMINATED.
5. the container bottom board according to Claims 1 to 4 any one, it is characterised in that the thickness of the directional structure board
Spend for 8～18mm；
The thickness of the horizontal ply is 1.2～1.5mm；
It is 1.7～2.0mm that the bamboo slights the single-sheet thickness of curtain；The single-sheet thickness for rolling curtain is 2.5～5.5mm；
The thickness of longitudinal ply is 1.2～1.5mm；The thickness of the bamboo mat layer is 1.0～1.2mm.
6. the preparation method of container bottom board described in Claims 1 to 5 any one, comprises the following steps：
Phyllostachys pubescens Mazei ex H.de Lebaie with a diameter of 3～8cm is prepared and rolls curtain as raw material, moisture content≤20% for rolling curtain；Or with straight
Phyllostachys pubescens Mazei ex H.de Lebaie more than 8cm is raw material in footpath, prepares bamboo and slights curtain, and the bamboo slights moisture content≤20% of curtain；Described roll curtain or bamboo
Thin bamboo strip curtain is bamboo curtain splint layer raw material；
Rounding is dried to moisture content≤20% into after veneer；
Carry out drying to moisture content≤25% after impregnation or glue spraying by resin film, the glue is phenolic resin glue, obtains tack coat；
It is that directional structure board, intermediate layer both sides are followed successively by horizontal ply, bamboo curtain splint layer, secondary outer layer from inside to outside according to intermediate layer
Order passes sequentially through the tack coat bonding assembly, and described outer layer is longitudinal ply or bamboo mat layer；Obtain in assembly again
The upper and lower surface of base plate young bird product arranges ornament materials, obtains slab；
The slab is carried out hot pressing and obtains the container bottom board containing directional structure board.
7. preparation method according to claim 6, it is characterised in that the hot pressing includes：It is 2.0～5.0MPa in gauge pressure
Under the conditions of pressurization 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.
8. preparation method according to claim 7, it is characterised in that the temperature independence of the pressurization heat transfer and thermocompression forming
For 135～155 DEG C；The time of the pressurization heat transfer is 0.5～1min/mm thicknesss of slab；The time of the thermocompression forming be 10～
15min.
9. preparation method according to claim 6, it is characterised in that the solid content of the phenolic resin glue is 40～
46%；The pH value of the phenolic resin glue is 10～13；Painting 4# cup viscosity of the phenolic resin glue under the conditions of 25 DEG C is 30
～80 seconds.
10. the preparation method according to claim 6 or 9, it is characterised in that the glue amount of the impregnation or glue spraying independently is
The 25～35% of resin film weight.
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| CN115030433A (en) * | 2022-07-01 | 2022-09-09 | 何其佳 | Composite decorative plate and manufacturing method thereof |
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