CN112571891A

CN112571891A - All-wood clear water template and preparation process thereof

Info

Publication number: CN112571891A
Application number: CN202011416289.7A
Authority: CN
Inventors: 刘锐楷; 许宁; 李振林; 卢建房; 黄文杰
Original assignee: Hunan Zhongji New Material Technology Co ltd
Current assignee: Hunan Zhongji New Material Technology Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-30

Abstract

The application relates to a full-wood clear water template and a preparation process thereof, relating to the field of templates for buildings, wherein the full-wood clear water template comprises: a core plate and a clear water layer; the core board is formed by overlapping and gluing a plurality of wood veneer layers; the clear water layer is respectively and fixedly connected to the upper end face and the lower end face of the core plate, and the clear water layer is used for facilitating demoulding of the template. The method has the effects of improving the recycling of the materials of the clear water template and reducing the manufacturing cost.

Description

All-wood clear water template and preparation process thereof

Technical Field

The application relates to the field of templates for buildings, in particular to a full-wood clear water template and a preparation process thereof.

Background

The clear water template is a building template, and is mainly suitable for the middle and shear walls, vertical wall boards, dams, tunnels, overpasses, arch bridges and other bridges, beam columns and other buildings of high-rise buildings.

The existing clear water template usually adopts an aluminum alloy template, and compared with a steel template, the clear water template has the advantages of high strength, good stability, difficult rusting, reusability and the like, so that the clear water template is widely applied to the building industry; but the consumption of metals, especially aluminum, is severe with the large-scale use of aluminum alloy forms, resulting in transitional exploitation of aluminum ore resources, while metal ore resources are limited and cannot be formed in a short time.

In view of the above-mentioned related technologies, the inventor believes that the clear water template has the defects of difficult recycling of materials and high cost in manufacturing.

Disclosure of Invention

In order to improve the material utilization of the clear water template and reduce the manufacturing cost of the clear water template, the application provides the all-wood clear water template and the preparation process thereof.

In a first aspect, the application provides an all-wood clear water template, which adopts the following technical scheme:

an all-wood clear water template, includes core and clear water layer, wherein: the core board is formed by overlapping and gluing a plurality of wood veneer layers in the thickness direction; the clear water layer is glued on at least one surface of the core plate.

Through adopting above-mentioned technical scheme, pile up a plurality of wooden veneer layers and be fixed in integrative formation core, it is fixed with the clear water layer with the both sides of core, make the both sides of core have the clear water effect, the convenient drawing of patterns, make the core through wooden veneer layer, all adopt wooden material, the utilization ratio of timber has been improved when making the core, can separate the board or separate the remaining stuff of board and make the wooden veneer of composite construction to carry out reuse, and can timber recycle when the template damages, the cyclic utilization of the material that has the improvement clear water template has just reduced the effect of cost of manufacture.

Optionally, the wood veneer layer includes a first wood veneer layer and a second wood veneer layer; the first wood veneer layer is a flat layer formed by arranging and connecting wood veneers with the same size along the same direction; the second wood veneer layer is a flat layer formed by arranging and connecting wood veneers with the same size along the same direction.

Through adopting above-mentioned technical scheme, make first wood veneer layer and second wood veneer layer with a plurality of wood veneers, can make the wood veneer that satisfies the specification with dumped timber according to the demand and make the wood veneer layer again in the manufacturing process, through carrying out reuse to dumped timber, the ligneous utilization ratio has been improved, utilize coupling assembling to fix a row of first wood veneer layer of formation and second wood veneer layer with the wood veneer of a plurality of same specifications respectively, make the wood veneer stably fix into the wood veneer layer, can make things convenient for the workman to operate when piling up.

Optionally, the two surfaces of the core plate are both first wood veneer layers, and the first wood veneer layers and the second wood veneer layers are alternately arranged from the two surfaces inwards along the thickness direction of the core plate; the thickness direction of the wood veneer of the first wood veneer layer is arranged along the thickness direction of the core plate; the width direction of the wood veneer of the second wood veneer layer is arranged along the thickness direction of the core plate.

Through adopting above-mentioned technical scheme, pile up first wood veneer layer and second wood veneer in turn, thereby because the surface of first wood monolayer is formed by the concatenation of large tracts of land wood veneer and makes the surface smoothness of first wood veneer layer higher, be fit for the superficial layer of clear water template, pile up through first wood veneer layer and second wood veneer layer in turn for act as the stiffening rib each other between first wood veneer layer and the second wood veneer layer, improved the bearing capacity of core.

Optionally, the wood veneers of the first wood veneer layer and the second wood veneer layer are arranged along the length direction of the core board.

By adopting the technical scheme, the length direction arrangement is staggered or arranged along the width direction relative to the length direction and the width direction, so that on one hand, the specification of the same wood veneer can be realized, the blanking process is reduced, on the other hand, the time consumption of the arrangement process is reduced, and the preparation efficiency is improved.

Optionally, the wood veneers of the first wood veneer layer and the second wood veneer layer are connected by a connecting assembly respectively;

the connecting assembly comprises a connecting rope, and the connecting rope is wound on the adjacent wood veneers to connect all the wood veneers into a whole and weave the wood veneers into a first wood veneer layer and a second wood veneer layer respectively.

Through adopting above-mentioned technical scheme, weave into the wood veneer layer to the wood veneer through connecting the rope, make the wood veneer layer with the wood veneer of same specification, connect the low price of rope, the effectual manufacturing cost who reduces the clear water template, and weave the wood veneer through connecting the rope, reduced the operation degree of difficulty, make things convenient for the workman to operate.

Optionally, the clear water layer includes glass fiber layers, and the glass fiber layers are glued on two sides of the core plate respectively.

Through adopting above-mentioned technical scheme, be fixed in an organic whole with the fine layer of glass with the upper and lower both ends face of clear water template for the both sides of clear water template are the fine layer of glass, make the smooth easy drawing of patterns in both sides of clear water template, can two-sided used repeatedly in the use, increased the number of times of use of clear water template.

Optionally, the clear water layer still includes the PET membrane, the PET membrane covers and is fixed in the glass fiber layer and keeps away from the one side of core board.

Through adopting above-mentioned technical scheme, keep away from the PET membrane in the glass fiber layer one side coating of core for the veneer is better at the clear water effect on glass fiber layer on the clear water template lateral wall, and the PET membrane is the polycondensate of terephthalic acid and ethylene glycol, has good mechanical properties, and impact strength is 3~5 times of other films, and folding endurance is good, resistant oily, resistant fat, resistant diluted acid, diluted alkali, make the clear water effect of clear water template better through the PET membrane, has improved the life of clear water template.

In a second aspect, the present application provides a preparation process, which adopts the following technical scheme:

a process for preparing, comprising:

respectively manufacturing a core plate and a clear water layer; wherein:

the core plate manufacturing method comprises the following steps: sequentially drying, alternately laying and gluing, hot-pressing and polishing a plurality of wood veneer layers to obtain a core plate;

the step of preparing the clear water layer comprises the following steps: sequentially gluing, laminating and hot-pressing the glass fiber cloth and the non-woven fabric to form a glass fiber layer, and compounding polypropylene on two surfaces of the glass fiber layer to form a PP film so as to finish the preparation of the clear water layer;

gluing the core board and the clear water layers, and respectively superposing the clear water layers on the core board with the glue on the two sides for hot press molding to obtain the clear water template.

By adopting the technical scheme, the wood veneers are stacked and glued and are hot-pressed into the core plate through the heating template, the glass fibers and the non-woven fabrics are staggered and glued and are hot-pressed into the clear water layer through the hot mold plate, and the manufactured core plate and the clear water layer are hot-pressed and compounded to form the clear water template, so that the effects of improving the recycling of materials of the clear water template and reducing the manufacturing cost are achieved.

Optionally, the step of manufacturing the core board further includes, before drying the wood veneer layer:

the method comprises the following steps of sequentially weaving long-strip-shaped wood veneers with rectangular cross sections into a first wood veneer layer through connecting ropes by taking the surface where the largest area is located as a laying surface and the side surface in the length direction as a splicing surface;

sequentially weaving a second wood veneer layer by using a connecting rope, wherein the side surface of a long-strip-shaped wood veneer with a rectangular cross section in the length direction is a laying surface, and the surface with the largest area is a splicing surface;

the step of laying the plurality of wood veneer layers in the step of manufacturing the core board comprises the following steps:

sequentially laying a first wood veneer layer and a second wood veneer layer according to a preset arrangement sequence and the number of layers; the arrangement sequence is determined according to the fact that the two surfaces of the core plate are first wood veneer layers, and the first wood veneer layers and the second wood veneer layers are alternately arranged from the two surfaces inwards in the thickness direction of the core plate.

By adopting the technical scheme, the utilization rate and the preparation efficiency of wood can be effectively improved, and the prepared clear water template meets the requirements of industrial standards.

Optionally, in the step of manufacturing the core board, the water content of the wood veneer is lower than 12%, and the glue distribution amount is 250-300 g/m²Hot pressing for more than 15 minutes under the conditions that the solid content of the glue is 40-60%, the temperature is 125-130 ℃ and the pressure is 8-10 Mpa;

in the step of gluing the core board and the clear water layer, the glue spreading amount is 300-320 g/m²Hot pressing for more than 10 minutes under the conditions that the solid content of the glue is 40-60%, the temperature is 125-130 ℃ and the pressure is 6-8 Mpa;

when the clean water layer and the core plate are glued and hot-pressed, a steel template with mirror surfaces on two sides is adopted

By adopting the technical scheme, the prepared clear water template can meet the industrial standard under the process conditions, and the steel templates with mirror surfaces on two sides are adopted to support the clear water layers on two sides of the core plate for hot pressing, so that the smoothness of the clear water layers of the clear water template is ensured, and the smoothness and the flatness of a wall body can be ensured when building pouring is carried out.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the method, the core plate is integrally formed by stacking and fixing the plurality of wood veneer layers, and the two sides of the core plate are fixed with the clean water layers, so that the two sides of the core plate have clean water effects, the demolding is convenient, the wood can be recycled when the template is damaged due to the fact that the wood veneer layers are made of wood materials, and the effects of improving the recycling of materials of the clean water template and reducing the manufacturing cost are achieved;

2. according to the wood veneer stacking method, the first wood veneer layer and the second wood veneer layer are formed by fixing a plurality of wood veneers with the same specification in a row through the connecting ropes, so that the wood veneers are stably fixed into the wood veneer layers, and the operation of workers can be facilitated during stacking;

3. this application is through keeping away from the PET membrane of one side coating on the core on the fine layer of glass for the veneer is better at the clear water effect on the fine layer of clear water template lateral wall, and the PET membrane is the polycondensate of terephthalic acid and ethylene glycol, has good mechanical properties, and impact strength is 3~5 times of other films, and folding endurance is good, resistant oily, resistant fat, resistant dilute acid, diluted alkali, make the clear water effect of clear water template better through the PET membrane, has improved the life of clear water template.

Drawings

Fig. 1 is a schematic view of the whole wood form of the present embodiment 1.

Fig. 2 is a schematic structural diagram of a first preferred mode of the all-wood fair-faced form of the embodiment 1.

Fig. 3 is a schematic structural diagram of a second preferred mode of the all-wood fair-faced form of the embodiment 1.

Fig. 4 is an overall structure diagram of a third preferred mode of the all-wood clear water template in the embodiment 1.

Fig. 5 is a schematic view of the entire structure of embodiment 2.

Fig. 6 is a flowchart of the manufacturing process of this embodiment.

Description of reference numerals: 1. a core board; 11. a first wood veneer layer; 12. a second wood veneer layer; 2. a clear water layer; 21. a glass fiber layer; 22. a PET film; 3. a connecting assembly; 31. and connecting ropes.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a full-wood clear water template.

Example 1

Referring to fig. 1, the all-wood clear water template comprises a core plate 1 and a clear water layer 2. The core board 1 is formed by laminating and gluing a plurality of wood veneer layers in the thickness direction, the wood veneer layers can be wood boards with an integral structure, or wood boards with a splicing or splicing structure, for example, a plurality of wood veneers with small areas are spliced or spliced to form a wood board with a large area; compared with the core board made of a whole piece of wood, the core board 1 has the advantages that on one hand, the requirement on the wood is low, and even leftover materials can be utilized, so that the cost of raw materials is greatly reduced, and the utilization rate of the wood is improved; on the other hand, the requirements on strength and elastic performance can be met through gluing and arrangement of the wood veneers; the clear water layer 2 can be coated on both sides of the core plate by using a material with clear water effect, and is cured and molded, such as thermoplastic resin, PET, and the like.

In an embodiment of the present application, the wood veneer layer includes both the first wood veneer layer 11 and the second wood veneer layer 12; the first wood veneer layer 11 is a flat layer formed by arranging and connecting wood veneers with the same size along the same direction; the second wood veneer layer 12 is a flat-layered layer formed by arranging and connecting wood veneers of the same size in the same direction. Referring to fig. 2 and 3, the wood veneers of the first wood veneer layer 11 and the second wood veneer layer 12 have a length equal to that of the core board 1 when arranged along the length direction of the core board 1; referring to fig. 4, when the wood veneers of the first wood veneer layer 11 and the second wood veneer layer 12 are arranged along the width direction of the core board 1, the length of the wood veneers is the width of the core board 1, and the cross section of the wood veneers can be rectangular or square, so that on one hand, the utilization rate of wood can be improved, on the other hand, the contact area is surface contact when the wood veneers are arranged, and the stability and strength of the whole structure of the wood veneer layer formed by splicing and assembling are relatively high.

Referring to fig. 2 again, in a preferred embodiment of the present invention, when the wood veneers used in the two wood veneer layers (i.e., the first wood veneer layer 11 and the second wood veneer layer 12) have the same specification, i.e., the dimensions in the length direction, the width direction and the height direction are the same, the thickness direction of the wood veneers in the first wood veneer layer 11 and the second wood veneer layer 12 is arranged along the thickness direction of the core board 1, the wood veneer arrangement direction of the first wood veneer layer 11 is the same as the wood veneer arrangement direction of the second wood veneer layer 12, for example, the wood veneers are arranged along the length direction of the core board 1, wherein the thickness direction of the wood veneers in the first wood veneer layer 11 is arranged along the thickness direction of the core board 1, and the width direction of the wood veneers in the second wood veneer layer 12 is arranged along the thickness direction of the core board 1. In the scheme, the wood veneers in the two layers can adopt the same specification, thereby being beneficial to processing and blanking. In another embodiment of the present disclosure, referring to fig. 4, the wood veneer arrangement direction of the first wood veneer layer 11 and the wood veneer arrangement direction of the second wood veneer layer 12 are arranged along the width direction of the core board 1.

In another preferred form of the present application, the two layers of wood veneers are arranged in different directions, for example, referring to fig. 4, the wood veneers in the first wood veneer layer 11 are arranged in the length direction of the core board 1, and the wood veneers in the second wood veneer layer 12 are arranged in the width direction of the core board 1. The strength of the core plate 1 in the width direction and the length direction can be enhanced, and the stability of the core plate 1 can be improved.

In other embodiments of the present application, for example, the wood veneers constituting the first wood veneer layer 11 and the wood veneers constituting the second wood veneer layer 12 are both sheet-shaped long wood strips, wherein the lengths are the same, the cross-sectional shapes are both rectangular, and the first wood veneer layer 11 and the second wood veneer layer 12 are alternately laminated; the thickness direction of the wood veneers of the first wood veneer layer 11 is arranged along the thickness direction of the core plate 1, the arrangement direction of the wood veneers is arranged along the length direction of the core plate 1, the width direction of the wood veneers of the second wood veneer layer 12 is arranged along the thickness direction of the core plate 1, and the arrangement direction of the wood veneers is arranged along the width direction of the core plate 1; the scheme is beneficial to improving the integral deformation resistance of the core plate 1.

Form the size of the veneer of first wood veneer layer 11 and formation the size of the veneer of first wood veneer layer 11 also can be different, and for example the size of the veneer that constitutes first wood veneer layer 11 is bigger than the size of the veneer that constitutes second wood veneer layer 12, can carry out nimble adjustment to the specification of the veneer of each layer according to the clear water template size of specific preparation.

In the above scheme, adjacent wood veneers in the same wood veneer layer can be fixedly connected, for example, glued, nailed together by nails, or threaded together by steel wire ropes, or spliced by tenon inserting structures, or woven together by flexible ropes.

As a specific embodiment of the present application, the core board 1 is made by alternately gluing a plurality of first wood veneer layers 11 and second wood veneer layers 12, and two kinds of wood veneers are selected, wherein the first wood veneer layer has a cross-sectional length of 2440mm, a width of 20mm and a thickness of 1.7mm, the second wood veneer layer has a cross-sectional length of 2440mm, a width of 1.7mm and a thickness of 1.5mm, and the first wood veneer layer has a thickness of 1.7mm, weaving a wood veneer with the width of 20mm into a first wood veneer layer 11 by taking the side surface formed in the length direction and the thickness direction as a splicing surface, weaving a wood veneer with the width of 1.7mm and the thickness of 1.5mm into a second wood veneer layer 12 by taking the side surface formed in the length direction and the width direction as a splicing surface, wherein both surfaces of the core plate 1 are first wood veneer layers 11, the first wood veneer layers 11 and the second wood veneer layers 12 are alternately laminated inwards from both surfaces of the core plate 1 along the thickness direction, and adjacent wood veneer layers are fixed by glue layers; the clear water layer 2 is respectively glued on the upper surface and the lower surface of the core board 1, in the embodiment, the clear water layer 2 is glued on the first wood veneer layer 11, the clear water layer 2 is a glass fiber layer 21, and the glass fiber layer 21 is formed by alternately stacking, heating, laminating and compounding a sheet material woven by glass fiber cloth and polypropylene and a non-woven fabric. Finally, a clear water template with the thickness of 14mm is prepared.

Referring to fig. 1, the horizontal wood veneer (i.e. the first wood veneer layer 11) and the vertical wood veneer (i.e. the second wood veneer layer 12) are woven into the wood veneers of two specifications of different specifications through the connecting assembly 3, the connecting assembly 3 is the connecting rope 31, the material of the connecting rope 31 adopts the nylon rope, the connecting rope 31 winds the adjacent wood veneers to weave a plurality of wood veneers into the wood veneer layers along the length direction of the cross section or along the thickness direction butt of the cross section, the first wood veneer layer 11 and the second wood veneer layer 12 are stacked on the hot-pressing steel template, and the first wood veneer layer 11 and the second wood veneer layer 12 are glued and hot-pressed and shaped.

As a variation of this embodiment, the connecting assembly 3 may also be a marquee nail, and the adjacent wood veneers are connected together by the marquee nail to be woven into a wood veneer layer, and the first wood veneer layer 11 and the second wood veneer layer 12 are stacked and glued to form the core board 1.

Referring to fig. 1, one end of the glass fiber layer 21, which is far away from the core plate 1, is further coated with a PET film 22, the PET film 22 is a condensation polymer of terephthalic acid and ethylene glycol, and has good mechanical properties, impact strength 3-5 times that of other films, good folding resistance, oil resistance, fat resistance, dilute acid resistance, dilute alkali resistance and other properties.

Referring to fig. 1, when the clean water formwork with a thickness of 12mm is manufactured in the embodiment, four first wood veneer layers 11 and four second wood veneer layers 12 are required, the two outermost sides of the core 1 are the first wood veneer layers 11, the two second wood veneer layers 12 are sequentially and inwardly arranged, the two first wood veneer layers 11 and the two second wood veneer layers 12 are abutted to each other in the middle, and the stacked first wood veneer layers 11 and the stacked second wood veneer layers 12 are stacked and glued to form the core 1 with an eight-layer composite structure.

Referring to fig. 2, when the clean water template with the thickness of 14mm is manufactured in the embodiment, five first wood veneer layers 11 and four second wood veneer layers 12 are needed, the two outermost sides of the core plate 1 are the first wood veneer layers 11, the two second wood veneer layers 12 are sequentially and inwards arranged, the two first wood veneer layers 11 and the two second wood veneer layers 12 are abutted to the first wood veneer layer 11 in the middle, the first wood veneer layers 11 and the second wood veneer layers 12 abutted in sequence are stacked on one side and glued on the other side, and the core plate 1 with the nine-layer composite structure is manufactured through hot press forming.

The implementation principle of an all-wood clear water template of the embodiment of the application is as follows: the method comprises the steps of weaving two wood veneers with different specifications into a first wood veneer layer 11 and a second wood veneer layer 12 through a connecting rope 31 in a winding mode, gluing the first wood veneer layer 11 and the second wood veneer layer 12 into a core plate 1, gluing the core plate 1 with a glass fiber layer 21, coating a PET (polyethylene terephthalate) film 22 on one side, far away from the core plate 1, of the glass fiber layer 21, and finishing the manufacturing of the all-wood clear water template.

Example 2

Referring to fig. 5, the difference from the embodiment shown in fig. 4 is that the direction of the split surfaces of the second wood veneer layers 12 is along the width direction of the core plate, while the direction of the split surfaces of the first wood veneer layers 11 is still along the length direction of the core plate, so that the load bearing performance between the adjacent wood veneer layers can be increased, and the mutual formation of the reinforcing ribs between the adjacent wood veneer layers plays a role of mutual support.

The embodiment of the application also discloses a preparation process, referring to fig. 6, including:

step S10, respectively manufacturing a core plate 1 and a clear water layer 2; wherein:

step S11, the step of manufacturing the core board 1 comprises the steps of sequentially drying, alternately laying and gluing a plurality of wood veneer layers, hot-pressing and polishing to obtain the core board 1;

it should be noted that, during the laying and glue spreading, the laying and glue spreading can be performed alternately and simultaneously, for example, a layer of wood veneer layer is laid, glue is spread on both sides of the laid layer, a layer of wood veneer layer is laid on the layer, glue is spread on both sides of the layer, and the above laying and glue spreading operations are repeated until all the wood veneer layers are laid; the polishing can be mechanical polishing or sanding, in the scheme, sanding and repairing are carried out on two surfaces of the core plate 1 after hot press molding so as to improve the gluing efficiency with a clear water layer;

step S12, the step of manufacturing the clear water layer 2 comprises the steps of compounding glass fiber cloth and polypropylene into a sheet material, and sequentially gluing, laminating and hot-pressing the sheet material and non-woven fabric to form a glass fiber layer 21; in order to further improve the effect of clear water, a PET film 22 can be coated on one surface of the glass fiber layer 21 and cured and formed;

it should be noted that, step 11 and step 12 are not in a sequential order, and in another embodiment of the present application, the order of step 11 and step 12 is reversed; .

And 20, gluing the core plate 1 and the clear water layers 2, and respectively overlapping the clear water layers 2 on the core plate 1 with the glue on the two sides for hot press molding to obtain the clear water template.

In order to further improve the effect of the clear water, a steel template with mirror surfaces on two sides is adopted when the clear water layer 2 and the core plate 1 are glued and hot-pressed.

In an embodiment of the present application, one of the wood veneers with one specification is selected, one is a wood veneer with a longitudinal (thickness) of 1.7mm, and the other is a wood veneer with a transverse (width) of 1.7mm, the wood veneer with the longitudinal 1.7mm is woven into a first wood veneer layer 11 by nylon ropes, and the wood veneer with the transverse width of 1.7mm is stacked with the transverse width as the thickness and is woven into a second wood veneer layer 12 by nylon ropes. The first wood veneer layer 11 and the second wood veneer layer 12 are laminated and glued { gluing amount: 280g/m²(double-sided), the solid content of the glue is 50 percent; hot pressing (hot in and hot out): 125 ℃ at 130 ℃, the pressure of 8-10MPa (gauge pressure), the time: 15 min; hot-pressing and shaping are carried out through a hot-pressing steel template (a flat steel template (a tray is provided with a 12mm thickness gauge)), sanding and repairing are carried out after hot-pressing and shaping are finished, wherein surface defects (defects such as tree section holes, cracks and other pits) are repaired on two surfaces of a core plate 1 through putty, the core plate 1 is sanded to 11 (-0.2, + 0.2) mm through a sanding belt with the thickness not less than 80 meshes in a fixed sanding mode, and the core plate 1 and a glass fiber layer 21 are compounded after the core plate 1 is manufactured: 300g/m2 (brushing both sides of the core plate 1), the solid content of the glue is 50 percent; hot pressing (cold in and cold out, plate out at 42 ℃): 125 ℃ at 130 ℃, pressure of 6-8MPa (gauge pressure), time: 10min, and the two surfaces of the hot-pressed steel template subjected to hot-pressing compounding are mirror steel templates, the core plate 1 and the glass fiber layer 21 are subjected to hot-pressing compounding, and the side, away from the core plate 1, of the glass fiber layer 21 is coated with a PET film 22.

In this embodiment, the physical indexes of the manufactured 12mm core board are as follows:

according to the table, the weight of each square meter of the clear water template with the thickness of 12mm prepared by the preparation process is 11kg, so that the weight of the clear water template is greatly reduced, and the clear water template is convenient for workers to carry. The water content of the whole clear water template is less than 12%, the water content is well controlled, the service life of the template can be effectively prolonged, the water content is close to the environment, the template cannot absorb water and expand, and the water content of the building template (6% -14%) meets { [ plywood for concrete template ] (GB/T17656-2008 ) and [ artificial plate size determination ] (GB/T19367-2009 }. The elastic modulus (the straight grain is more than or equal to 7500Mpa, the transverse grain is more than or equal to 7000 Mpa) of the template is far greater than the elastic modulus (the straight grain is more than or equal to 50Mpa, the transverse grain is more than or equal to 30 Mpa) of the template specified in plywood for concrete template GB/T17656-2008 and artificial plate size determination GB/T19367-2009 , and the static bending strength (the straight grain is more than or equal to 85Mpa, the transverse grain is more than or equal to 70 Mpa) of the template is also far greater than the static bending strength (the straight grain is more than or equal to 50Mpa, the transverse grain is more than or equal to 30 Mpa) of the template specified in plywood for concrete template GB/T17656-2008 and artificial plate size determination GB/T19367-2009. The bonding strength (not less than 1.7 Mpa) of the template is far greater than the specified bonding strength (not less than 0.7 Mpa), and the clean water template prepared by the preparation process of the embodiment meets the requirements of the I-type plywood dipping and peeling test. It should be noted that the cross grain herein refers to a wood veneer bonding grain in the first wood veneer 11 formed by using the side surfaces of the wood veneer in the thickness direction and the length direction as splicing surfaces, and the down grain refers to a wood veneer bonding grain in the second wood veneer 12 formed by using the side surfaces of the wood veneer in the width direction and the length direction as splicing surfaces.

In this embodiment, the physical indexes of the manufactured 14mm core board are as follows:

according to the table, the weight of each square meter of the clear water template with the thickness of 14mm prepared by the preparation process is 11kg, so that the weight of the clear water template is greatly reduced, and the clear water template is convenient for workers to carry. The water content of the whole clear water template is less than 12 percent, the water content is well controlled, the service life of the template can be effectively prolonged, the water content is close to the environment, the template cannot absorb water and expand, and the water content (6-14 percent) of the building template specified in { [ plywood for concrete template ] 'GB/T17656-2008, [ artificial plate size determination ]' GB/T19367-2009 ] is met. The elastic modulus (with the grain being more than or equal to 8000Mpa and the cross grain being more than or equal to 7000 Mpa) of the template is far greater than the elastic modulus (with the grain being more than or equal to 90Mpa and the cross grain being more than or equal to 70 Mpa) of the template specified in the plywood for concrete template GB/T17656-2008 and the artificial plate size determination GB/T19367-2009, and the static bending strength (with the grain being more than or equal to 90Mpa and the cross grain being more than or equal to 70 Mpa) of the template is also far greater than the static bending strength (with the cross grain being more than or equal to 50Mpa and the cross grain being more than or equal to 30 Mpa) of the template specified in the plywood for concrete template GB/T17656-2008 and the artificial plate size determination. The bonding strength (not less than 1.7 Mpa) of the template is far greater than the specified bonding strength (not less than 0.7 Mpa), and the clean water template prepared by the preparation process of the embodiment meets the requirements of the I-type plywood dipping and peeling test.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An all-wood clear water template, comprising:

a core board (1) formed by stacking and gluing a plurality of wood veneer layers in the thickness direction;

a clear water layer (2) glued at least on one side of the core plate (1).

2. The all-wood clear water template according to claim 1, characterized in that: the wood veneer layer comprises a first wood veneer layer (11) and a second wood veneer layer (12);

the first wood veneer layer (11) is a flat layer formed by arranging and connecting wood veneers with the same size along the same direction;

the second wood veneer layer (12) is a flat layer formed by arranging and connecting wood veneers with the same size along the same direction.

3. The all-wood clear water template as claimed in claim 2, wherein: the two surfaces of the core plate (1) are both provided with first wood veneer layers (11), and the first wood veneer layers (11) and the second wood veneer layers (12) are alternately arranged from the two surfaces inwards along the thickness direction of the core plate (1);

the thickness direction of the wood veneer of the first wood veneer layer (11) is arranged along the thickness direction of the core plate (1);

the width direction of the wood veneer of the second wood veneer layer (12) is arranged along the thickness direction of the core plate (1).

4. The all-wood clear water template according to claim 3, characterized in that: the wood veneers of the first wood veneer layer (11) and the second wood veneer layer (12) are arranged along the length direction of the core board (1).

5. The all-wood clear water template as claimed in claim 2, wherein: the wood veneers of the first wood veneer layer (11) and the second wood veneer layer (12) are respectively connected through a connecting component (3);

the connecting assembly (3) comprises a connecting rope (31), and the connecting rope (31) is wound on the adjacent wood veneers to connect all the wood veneers into a whole to be woven into a first wood veneer layer (11) and a second wood veneer layer (12) respectively.

6. The all-wood clear water template according to any one of claims 1 to 5, characterized in that: the clear water layer (2) comprises glass fiber layers (21), and the glass fiber layers (21) are respectively glued on two surfaces of the core plate (1).

7. The all-wood clear water template according to claim 6, characterized in that: clear water layer still includes PET membrane (22), PET membrane (22) cover and are fixed in glass fiber layer (21) keep away from the one side of core board (1).

8. A process for preparing the all-wood clear water template as claimed in any one of claims 1 to 7, wherein:

respectively manufacturing a core plate (1) and a clear water layer (2); wherein:

the core plate (1) manufacturing method comprises the following steps: sequentially drying, alternately laying and gluing a plurality of wood veneer layers, hot-pressing and polishing to obtain a core plate (1);

the step of preparing the clear water layer (2) comprises the following steps: sequentially gluing, laminating and hot-pressing the glass fiber cloth and the non-woven fabric to form a glass fiber layer (21), and compounding a PET (polyethylene terephthalate) film (22) on two sides of the glass fiber layer (21) to finish the preparation of the clear water layer;

gluing the core plate (1) with the clear water layers (2), and respectively superposing the clear water layers on the core plate (1) with the glue on the two surfaces to obtain the clear water template through hot press molding.

9. The preparation process of the all-wood clear water template according to claim 8, characterized in that:

the step of manufacturing the core board (1) also comprises the following steps before drying the wood veneer layer:

sequentially weaving a first wood veneer layer (11) by using a connecting rope (31) with a surface with a rectangular cross section as a laying surface according to the maximum area and a side surface in the length direction as a splicing surface;

sequentially weaving a second wood veneer layer (12) by using a connecting rope (31) with the side surface of the strip-shaped wood veneer with a rectangular cross section in the length direction as a laying surface and the surface with the largest area as a splicing surface;

the step of laying a plurality of wood veneer layers in the step of manufacturing the core board (1) comprises the following steps:

sequentially laying a first wood veneer layer (11) and a second wood veneer layer (12) according to a preset arrangement sequence and the number of layers; the arrangement sequence is determined according to the fact that the two surfaces of the core plate are both first wood veneer layers (11), and the first wood veneer layers (11) and the second wood veneer layers (12) are alternately arranged from the two surfaces inwards in the thickness direction of the core plate.

10. The preparation process of the all-wood clear water template according to claim 8 or 9, characterized in that:

in the step of manufacturing the core board (1), the water content of the wood veneer is lower than 12%, and the glue distribution amount is 250-300 g/m²Hot pressing for more than 15 minutes under the conditions that the solid content of the glue is 40-60%, the temperature is 125-130 ℃ and the pressure is 8-10 Mpa;

in the step of gluing the core board (1) and the clear water layer (2), the glue distribution amount is 300-320 g/m²The solid content of the glue is 40-60%, and the temperature is 125-130%Hot pressing at 6-8MPa for over 10 min;

when the clear water layer (2) and the core plate (1) are glued and hot-pressed, a steel template with mirror surfaces on both sides is adopted.