CN103128834A - Arc-shaped surface thermoplastic mould and processing method utilizing mould to produce micro-corrugated straw veneers - Google Patents
Arc-shaped surface thermoplastic mould and processing method utilizing mould to produce micro-corrugated straw veneers Download PDFInfo
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- CN103128834A CN103128834A CN 201310057441 CN201310057441A CN103128834A CN 103128834 A CN103128834 A CN 103128834A CN 201310057441 CN201310057441 CN 201310057441 CN 201310057441 A CN201310057441 A CN 201310057441A CN 103128834 A CN103128834 A CN 103128834A
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- veneers
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- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 14
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 14
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 239000010902 straw Substances 0.000 title abstract 4
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims description 20
- 230000001070 adhesive effect Effects 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 20
- 239000003292 glue Substances 0.000 claims description 14
- 238000007759 kiss coating Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 241000218652 Larix Species 0.000 claims description 4
- 235000005590 Larix decidua Nutrition 0.000 claims description 4
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 4
- 235000011613 Pinus brutia Nutrition 0.000 claims description 4
- 241000018646 Pinus brutia Species 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000013467 fragmentation Methods 0.000 claims description 4
- 238000006062 fragmentation reaction Methods 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000004904 shortening Methods 0.000 claims description 4
- 229920001864 tannin Polymers 0.000 claims description 4
- 235000018553 tannin Nutrition 0.000 claims description 4
- 239000001648 tannin Substances 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009408 flooring Methods 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 abstract 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000003892 spreading Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 239000002023 wood Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The invention relates to an arc-shaped surface thermoplastic mould and a processing method utilizing the mould to produce micro-corrugated straw veneers. The arc-shaped surface thermoplastic mould comprises an upper mould, a lower mould and a base, the upper mould and the lower mould are mutually matched and adaptive in shape, the lower mould is disposed on the base and supported by the same, and gap passages for saturated hot steam to pass are reserved between the inner surface and the outer surface of the lower mould. The processing method utilizing the mould to produce the micro-corrugated straw veneers includes the steps: (1) pretreating raw materials; (2) performing fiber coating; (3) spreading coated fibers; (4) performing thermal briquetting for the spread materials to form plane veneers; (5) performing thermal plastifying for the surfaces of the plane veneers; and (6) enabling the plane veneers to be micro-corrugated. The mould and the processing method have the advantages that gluing thickness of the surfaces of the veneers is uniform, so that in a multi-layer board production process, gluing quality between the veneers is improved greatly, micro corrugations between two adjacent veneers are mutually pressed into base materials of each other, integrity is improved, performances in various aspects of boards are improved, and particularly grasping force of straw boards to screws is increased.
Description
Affiliated technical field
The present invention relates to a kind of wood-based plate manufacturing technology, especially a kind of curved surfaces thermoplastic mould and the processing method of utilizing this mould generation microwaviness stalk veneer.
Background technology
In the technical field of wood-based plate, making the multiple-plate method of stalk is after just stalk is processed into veneer at present, then forms through certain technique assembly glue laminated.Veneer needs before glue laminated by the even applying glue of certain thickness, and this is the necessary condition that guarantees cementing strength between each layer veneer.The stalk multi-layer sheet that adopts traditional handicraft to produce still has the problem of two aspects not resolve:
1) bonding quality between veneer is relatively poor, in use easily from interface cracking aliquation.Due to lamina by stalk fibre at the certain pressure compacted under, the surface the fiber free end be solidificated in the plane, and the surface fineness higher, so glue application layer thickness is difficult to evenly, be the main cause that causes stalk multi-layer sheet aliquation.
2) stalk board is lower to the grip force of screw.Because institute's containing cellulose and hemicellulose in stalk are higher than timber, contained lignin is low than timber, and is so the stalk board resistance of deformation is lower, low than wood plank to the grip force of screw.
Summary of the invention
The object of the present invention is to provide a kind of curved surfaces thermoplastic mould and utilize this mould to produce the processing method of microwaviness stalk veneer, be intended to utilize microwaviness to improve the uniformity of veneer top sizing layer thickness, and utilize microwaviness to improve stalk board to the grip force of screw, to address the above problem.
Technical scheme of the present invention is achieved in that
A kind of curved surfaces thermoplastic mould comprises upper die and lower die and base, and the upper die and lower die shape is mated adaptation mutually, and counterdie is placed on base, the base support counterdie; Have the interstitial channels of passing through as saturated vapours between counterdie inner surface and outer surface.Upper die and lower die are all that diameter is about the semicylinder device of 1.5 meters; The counterdie inner surface is the indent curved surfaces, and outer surface and base join; Between described counterdie inner surface and outer surface, interstitial channels runs through and spreads all over space between whole counterdie surfaces externally and internally; Counterdie outer surface both sides upper position is provided with two saturated vapours air inlets; Counterdie outer surface bottom is provided with a discharge outlet, discharges for the condensed water of saturated vapours.
The processing method of utilizing curved surfaces thermoplastic mould to produce microwaviness stalk veneer produces the processing method of microwaviness stalk veneer, comprises the steps:
(1) pretreatment of raw material
1) raw material fragmentation, sorting
2) fiber degrease processing: at a certain temperature raw material is heated, remove the wax fat of fiber surface; Remove the fiber of wax fat to the affinity increase of adhesive, both can improve stalk board intensity, can reduce again adhesive adapted amount;
3) raw fibre processing: employing is rubbed loose sander stalk section is rubbed the pine polishing, and raw material is processed into fiber;
(2) the fiber kiss-coating is processed
Selecting the superior larch tannin resin glue of glue performance is adhesive, and the adhesive consumption is 2-3%, and liquid adhesive stirs with fiber in agitator;
(3) the kiss-coating fiber is mated formation
Fiber after kiss-coating is mated formation in pressure mould by certain thickness;
(4) material of mating formation is hot-forming for the plane veneer
Under certain pressure, uniform temperature and certain hour, the material of mating formation is carried out hot pressing, form the plane veneer;
(5) veneer surface plasticizing
With the plane veneer put to radius of curvature be on the indent arc end template of R, and utilize patrix the veneer compacting to be carried out the curved surface thermoplastification on the arc bed die, bed die utilizes saturated vapor to carry out heated at constant temperature, fusion time is set as requested; Be subject to the heating of end template due to the sheet material outer surface that becomes arc, so that the fiber in sheet material outer surface 1.0mm thickness plastify, and owing to following the string with curved surface bus length generation plastic elongation;
(6) plane veneer microwaviness
Veneer is taken off from the arcuate bottom template fast, and sheet material recovers flat shape at the elastic reaction that is not plastifying part sheet material, thereby causes the surface that also plastified because the shortening of linear dimension produces microwaviness.
The invention has the beneficial effects as follows: the microwaviness living beings veneer that the present invention produces has the technical advantage of three aspects::
1) veneer surface is fine and closely woven and the existence of uniform microwaviness makes veneer top sizing even thickness, thereby makes in the multi-layer sheet production process, and only the bonding quality between laminate increases substantially, and fundamentally eliminates the phenomenon of stalk multi-layer sheet aliquation.
When 2) multi-layer sheet was suppressed, between the adjacent monolayer plate, the other side's mother metal was advanced in the mutual punching press of fine ripple, and globality increases, and had improved the various aspects of performance of sheet material.
3) fine ripple inclined-plane to stoping screw to deviate to have larger drag effect, has improved the grip force of stalk board to screw.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Accompanying drawing 1 is the structural representation of curved surfaces thermoplastic mould of the present invention.
In figure, the 1-patrix; The 2-veneer; The 3-counterdie.
The specific embodiment
Below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.Need to prove before this, the term that uses in this specification and claims book or word can not limited interpretation be the implication in common implication or dictionary, and should be based in order to illustrate that in the best way its invention inventor can be interpreted as meeting to the principle that the concept of term be carried out suitably definition implication and the concept of the technology of the present invention thought.Thereupon, the structure that represents in the embodiment that this specification is put down in writing and accompanying drawing is one of most preferred embodiment of the present invention, can not represent technological thought of the present invention fully, therefore should be understood that to have for the present invention various equivalents and the variation that can replace.
In Fig. 1, a kind of curved surfaces thermoplastic mould comprises patrix 1, counterdie 3 and base, and patrix 1 and counterdie 3 shapes are mated adaptation mutually, and counterdie 3 is placed on base, base support counterdie 3; Have the interstitial channels of passing through as saturated vapours between counterdie 3 inner surfaces and outer surface.Patrix 1 and counterdie 3 are all that diameter is about the semicylinder device of 1.5 meters; Counterdie 3 inner surfaces are the indent curved surfaces, and outer surface and base join; Between described counterdie 3 inner surfaces and outer surface, interstitial channels runs through and spreads all over space between whole counterdie surfaces externally and internally; Counterdie 3 outer surface both sides upper positions are provided with two saturated vapours air inlets; Be provided with a discharge outlet bottom counterdie 3 outer surfaces, discharge for the condensed water of saturated vapours.
Utilize the processing method technological process of curved surfaces thermoplastic mould generation microwaviness stalk veneer as follows:
It should be noted that, although the present invention is described and illustrates with reference to the specific embodiment, but and do not mean that the present invention is limited to the embodiment of these descriptions, those skilled in the art can therefrom derive many different variants, and they all will be covered in the true spirit and scope of claim of the present invention.
(1) pretreatment of raw material
1) raw material fragmentation, sorting: machine cut by the employing cutter or beater grinder is broken with raw material, then adopts sieve method to sub-elect the long stalk section of 10cm-25cm;
2) fiber degrease processing: the superheated steam that passes into 130 ℃-140 ℃ heats stalk section, removes the wax fat of fiber surface;
3) raw fibre processing: employing is rubbed loose sander stalk section is rubbed the pine polishing in the superheated steam of 130 ℃-140 ℃, and raw material is processed into fiber;
(2) the fiber kiss-coating is processed
Fiber after processing is delivered to stirs in the cabin, the glue spraying head of glue system sprays into the adhesive that atomizes in proportion and stirs in the cabin, and poking bar is mixed fiber and adhesive thoroughly; Described adhesive is the larch tannin resin glue, and the adhesive consumption is 2-3%, and liquid adhesive stirs with fiber in agitator;
(3) the kiss-coating fiber is mated formation
Adopt the mechanical type flooring mode, the fiber after kiss-coating is mated formation in pressure mould by certain thickness;
(4) material of mating formation is hot-forming for the plane veneer
Mat formation material in the pressure of 120bar, 135 ℃ of temperatures 30-38 processed seconds, formation plane veneer;
(5) veneer surface plasticizing
See accompanying drawing 1, with the plane veneer put to diameter be on the counterdie 3 of indent arc surface heat mould of 1.5m, and utilize patrix 1 under the pressure of 10bar, the curved surface thermoplastification being carried out in veneer 2 compactings on counterdie 3, counterdie 3 adopts the saturated vapor heating, temperature constant is between 160-170 ℃, and fusion time is 10-15 second; Be subject to the heating of microwaviness device counterdie due to the sheet material outer surface that becomes arc, so that veneer 2 follows the string near the fiber in the surperficial 1.0mm thickness of counterdies 3 plastifies, and owing to following the string with curved surface bus length direction generation plastic elongation;
(6) plane veneer microwaviness
Veneer 2 is taken off from counterdie 3 fast, and veneer 2 recovers flat shape under the elastic reaction that does not plastify part sheet material, causes the surface that already plastified because the shortening of linear dimension produces microwaviness.
Embodiments of the invention have better implementation, and be not that the present invention is done any type of restriction, any person skilled in art of being familiar with may utilize the technology contents change of above-mentioned announcement or be modified to the effective embodiment that is equal to, in every case do not break away from the content of technical solution of the present invention,, all still belong in the scope of technical solution of the present invention any modification or equivalent variations and modification that above embodiment does according to technical spirit of the present invention.
Claims (5)
1. a curved surfaces thermoplastic mould, comprise upper die and lower die and base, and it is characterized in that: the upper die and lower die shape is mated adaptation mutually, and counterdie is placed on base, the base support counterdie; Have the interstitial channels of passing through as saturated vapours between counterdie inner surface and outer surface.
2. a kind of curved surfaces thermoplastic mould according to claim 1, it is characterized in that: upper die and lower die are all that diameter is about the semicylinder device of 1.5 meters; The counterdie inner surface is the indent curved surfaces, and outer surface and base join; Between described counterdie inner surface and outer surface, interstitial channels runs through and spreads all over space between whole counterdie surfaces externally and internally; Counterdie outer surface both sides upper position is provided with two saturated vapours air inlets; Counterdie outer surface bottom is provided with a discharge outlet, discharges for the condensed water of saturated vapours.
3. utilize the processing method that produces microwaviness stalk veneer as the described curved surfaces thermoplastic of above-mentioned arbitrary claim mould, it is characterized in that: described method comprises following technological process:
(1) pretreatment of raw material;
(2) the fiber kiss-coating is processed;
(3) the kiss-coating fiber is mated formation;
(4) material of mating formation is hot-forming for the plane veneer;
(5) veneer surface plasticizing;
(6) plane veneer microwaviness.
4. the processing method of generation microwaviness stalk veneer according to claim 3, it is characterized in that: described technological process specifically comprises the steps:
(1) pretreatment of raw material
1) raw material fragmentation, sorting
2) fiber degrease processing: at a certain temperature raw material is heated, remove the wax fat of fiber surface; Remove the fiber of wax fat to the affinity increase of adhesive, both can improve stalk board intensity, can reduce again adhesive adapted amount;
3) raw fibre processing: employing is rubbed loose sander stalk section is rubbed the pine polishing, and raw material is processed into fiber;
(2) the fiber kiss-coating is processed
Selecting the superior larch tannin resin glue of glue performance is adhesive, and the adhesive consumption is 2-3%, and liquid adhesive stirs with fiber in agitator;
(3) the kiss-coating fiber is mated formation
Fiber after kiss-coating is mated formation in pressure mould by certain thickness;
(4) material of mating formation is hot-forming for the plane veneer
Under certain pressure, uniform temperature and certain hour, the material of mating formation is carried out hot pressing, form the plane veneer;
(5) veneer surface plasticizing
With the plane veneer put to radius of curvature be on the indent arc end template of R, and utilize patrix the veneer compacting to be carried out the curved surface thermoplastification on the arc bed die, bed die utilizes saturated vapor to carry out heated at constant temperature, fusion time is set as requested; Be subject to the heating of end template due to the sheet material outer surface that becomes arc, so that the fiber in sheet material outer surface 1.0mm thickness plastify, and owing to following the string with curved surface bus length generation plastic elongation;
(6) plane veneer microwaviness
Veneer is taken off from the arcuate bottom template fast, and sheet material recovers flat shape at the elastic reaction that is not plastifying part sheet material, thereby causes the surface that also plastified because the shortening of linear dimension produces microwaviness.
5. the processing method of generation microwaviness stalk veneer according to claim 4, it is characterized in that: described processing step comprises following concrete way:
(1) pretreatment of raw material
1) raw material fragmentation, sorting: machine cut by the employing cutter or beater grinder is broken with raw material, then adopts sieve method to sub-elect the long stalk section of 10cm-25cm;
2) fiber degrease processing: the superheated steam that passes into 130 ℃-140 ℃ heats stalk section, removes the wax fat of fiber surface;
3) raw fibre processing: employing is rubbed loose sander stalk section is rubbed the pine polishing in the superheated steam of 130 ℃-140 ℃, and raw material is processed into fiber;
(2) the fiber kiss-coating is processed
Fiber after processing is delivered to stirs in the cabin, the glue spraying head of glue system sprays into the adhesive that atomizes in proportion and stirs in the cabin, and poking bar is mixed fiber and adhesive thoroughly; Described adhesive is the larch tannin resin glue, and the adhesive consumption is 2-3%, and liquid adhesive stirs with fiber in agitator;
(3) the kiss-coating fiber is mated formation
Adopt the mechanical type flooring mode, the fiber after kiss-coating is mated formation in pressure mould by certain thickness;
(4) material of mating formation is hot-forming for the plane veneer
Mat formation material in the pressure of 120bar, 135 ℃ of temperatures 30-38 processed seconds, formation plane veneer;
(5) veneer surface plasticizing
With the plane veneer put to diameter be on the counterdie (3) of described indent arc surface heat mould of 1.5m, and utilize described upper mould (1) under the pressure of 10bar, veneer (2) compacting being carried out the curved surface thermoplastification on described lower mould (3), described lower mould (3) adopts the saturated vapor heating, temperature constant is between 160-170 ℃, and fusion time is 10-15 second; Be subject to the heating of microwaviness device counterdie due to the sheet material outer surface that becomes arc, so that veneer (2) follows the string near the fiber in the surperficial 1.0mm thickness of described lower mould (3) plastifies, and owing to following the string with curved surface bus length direction generation plastic elongation;
(6) plane veneer microwaviness
Veneer (2) is taken off from described lower mould (3) fast, and veneer (2) recovers flat shape under the elastic reaction that does not plastify part sheet material, causes the surface that already plastified because the shortening of linear dimension produces microwaviness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310057441 CN103128834A (en) | 2013-02-25 | 2013-02-25 | Arc-shaped surface thermoplastic mould and processing method utilizing mould to produce micro-corrugated straw veneers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310057441 CN103128834A (en) | 2013-02-25 | 2013-02-25 | Arc-shaped surface thermoplastic mould and processing method utilizing mould to produce micro-corrugated straw veneers |
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| CN103128834A true CN103128834A (en) | 2013-06-05 |
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| CN 201310057441 Pending CN103128834A (en) | 2013-02-25 | 2013-02-25 | Arc-shaped surface thermoplastic mould and processing method utilizing mould to produce micro-corrugated straw veneers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690535A (en) * | 2014-11-28 | 2016-06-22 | 广西鹿寨北林胶合板有限公司 | Waterproofing treatment method for fiber board |
| CN106142283A (en) * | 2016-06-28 | 2016-11-23 | 安徽松泰包装材料有限公司 | A kind of production method of On-line Control plate surface ripple |
| CN110076864A (en) * | 2018-01-25 | 2019-08-02 | 庆元浩丰工贸有限公司 | A kind of arc panel pressure setting |
-
2013
- 2013-02-25 CN CN 201310057441 patent/CN103128834A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105690535A (en) * | 2014-11-28 | 2016-06-22 | 广西鹿寨北林胶合板有限公司 | Waterproofing treatment method for fiber board |
| CN106142283A (en) * | 2016-06-28 | 2016-11-23 | 安徽松泰包装材料有限公司 | A kind of production method of On-line Control plate surface ripple |
| CN110076864A (en) * | 2018-01-25 | 2019-08-02 | 庆元浩丰工贸有限公司 | A kind of arc panel pressure setting |
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