CN106273993A - The production technology of EVA composite plate - Google Patents
The production technology of EVA composite plate Download PDFInfo
- Publication number
- CN106273993A CN106273993A CN201610679779.3A CN201610679779A CN106273993A CN 106273993 A CN106273993 A CN 106273993A CN 201610679779 A CN201610679779 A CN 201610679779A CN 106273993 A CN106273993 A CN 106273993A
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- CN
- China
- Prior art keywords
- composite plate
- eva composite
- eva
- production technology
- bulk
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1808—Handling of layers or the laminate characterised by the laying up of the layers
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to composite plate production technical field, especially relate to the production technology of EVA composite plate.The production technology of this EVA composite plate includes that metal net layer is arranged between two EVA plates by step: S1, forms bulk EVA composite plate；Bulk EVA composite plate is sent to discharging mechanism from feeding mechanism by S2, and during the transmission of bulk EVA composite plate on which below apply extruding force；Bulk EVA composite plate is heated by S3 by heating arrangements, and coordinates the effect of extruding force to complete the making of EVA composite plate finished product.EVA composite plate smooth, that bubble is little can be obtained by this production technology.
Description
Technical field
The present invention relates to composite plate production technical field, especially relate to the production technology of EVA composite plate.
Background technology
EVA is to be formed by ethylene-vinyl acetate copolymer, has good buffering, antidetonation, ecsomatics heat insulation, moistureproof, anti-
The advantages such as corrosion, resilience and tension stress are high, and toughness is high, has good shockproof, shock-absorbing capacity, are widely used in packaging
The fields such as mould, PUR, electric wire and toy.
At present, EVA sheet material it is frequently necessary to double-deck use, but, between two-layer EVA sheet material, the quantities of mutually bonding is big also
And smooth bonding can not there will be bubble.
Summary of the invention
It is an object of the invention to provide the production technology of EVA composite plate, with solve to produce present in prior art
There is bubble, irregular technical problem in EVA composite plate.
The present invention provides the production technology of EVA composite plate, and this technique includes step:
Metal net layer is arranged between two EVA plates by S1, forms bulk EVA composite plate；
Bulk EVA composite plate is sent to discharging mechanism from feeding mechanism by S2, and in the transmission process of bulk EVA composite plate
In below apply extruding force on which；
Bulk EVA composite plate is heated by S3 by heating arrangements, and coordinates the effect of extruding force to complete EVA composite plate
Finished product makes.
Further, between step S1 and step S2, also include step S101, enter charger in bulk EVA composite plate
Before structure, by positioner, the both sides of bulk EVA composite plate are positioned.
Further, described heating arrangements makes metal net layer be heated to more than 100 degree.
Further, described heating arrangements is radio frequency heating mechanism.
Further, described heating arrangements is sensing heating arrangements.
Further, described heating arrangements includes U-shaped adding heat pipe.
Further, the extruding force in step S2 is to be applied by hold down gag, and described hold down gag is arranged on described
Between feeding mechanism and discharging mechanism.
Further, after step s 3, also include step S4, EVA composite plate is carried out rolling by unwinding equipment, so
After it is stored by storage facilities again.
Further, the most also include step S5, by pressing equipment, EVA composite plate is carried out punching press, make
The formation difformity of EVA composite plate.
Further, between step S4 and step S5, also include step S401, EVA composite plate from described storage facilities to
Reach described pressing equipment, need unwinding equipment to unreel.
The beneficial effect of the production technology of the EVA composite plate that the present invention provides:
The production technology of the EVA composite plate that the present invention provides is the secondary operations to EVA material, is first set by metal net layer
It is placed between two-layer EVA plate, forms bulk EVA composite plate, need in this process EVA plate, metal net layer and EVA plate extremely
Upper and under the most neatly overlay on working plate, i.e. the EVA composite plate of bulk is placed at the charging aperture of feeding mechanism, for
Make EVA composite plate neat, smooth to create conditions.Then bulk EVA composite plate is sent to discharging mechanism from feeding mechanism,
And during the transmission of bulk EVA composite plate on which below apply extruding force；Finally, by heating arrangements to bulk EVA
Composite plate heats.Here want it should be noted that first have to heat to bulk EVA composite plate, then apply extruding force,
And be heated for metal net layer.Specifically, feeding mechanism passes and discharging mechanism coordinates the transporter of composition bulk EVA
Composite plate moves at heating arrangements, is heated the metal net layer of bulk EVA composite plate by heating arrangements, wherein, right
The mode of heating of metal net layer is noncontact heating, makes heating arrangements not destroy the smoothness of outer surface of EVA composite plate, and
Homogeneous heating.To in metal net layer heating process, metal net layer makes the surface melting of the EVA plate being in contact with it, and molecule
Expand, make the molecule of two EVA plates contact with metal net layer pass through the hole of metal net layer bonding.After heating, in order to make
Bond is more firm, by hold down gag, bulk EVA composite plate is applied pressure, thus completes the making of EVA composite plate.
The EVA composite plate adding metal net layer can improve its intensity, and in the case of the external world applies pulling force, EVA composite plate is the most variable
Shape.
Wherein, EVA composite plate relies on the EVA material bonding of self, and uniformly heats, uniform-compression power, by this
Production technology, can obtain even not having alveolate EVA composite plate on a small quantity, makes that EVA composite plate is smooth, performance good.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The EVA composite board material structural representation that Fig. 1 provides for the embodiment of the present invention；
The flow chart of the production technology of the EVA composite plate that Fig. 2 provides for the embodiment of the present invention.
Reference:
1-EVA plate；2-metal net layer；3-working plate；
4-transporter；5-heating arrangements；6-unwinding equipment；
7-storage facilities；8-pressing equipment；
31-positioner；41-feeding mechanism；411-charging aperture；
42-discharging mechanism 421-discharging opening；422-follower rollers；
423-drive roll.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
As it is shown in figure 1, raw material has: layer of metal stratum reticulare 2 and two-layer EVA plate 1；
As in figure 2 it is shown, the production technology of the EVA composite plate of the present embodiment includes:
Metal net layer 2 is arranged between two-layer EVA plate 1 by S1, forms bulk EVA composite plate；
Bulk EVA composite plate is sent to discharging mechanism 42 from feeding mechanism 41 by S2, and in the transmission of bulk EVA composite plate
During below apply extruding force on which；
Bulk EVA composite plate is heated by S3 by heating arrangements 5, and it is compound to coordinate the effect of extruding force to complete EVA
Board finished product makes.
The production technology of the EVA composite plate that the present embodiment provides is the secondary operations to EVA material, first by metal net layer
2 are arranged between two-layer EVA plate 1, form bulk EVA composite plate, need in this process EVA plate 1, metal net layer 2 and
EVA plate 1 the most neatly overlays on working plate 3, i.e. EVA composite plate is placed on the charging aperture of feeding mechanism 41
At 411, create conditions for making EVA composite plate neat, smooth.Then bulk EVA composite plate is transmitted from feeding mechanism 41
To discharging mechanism 42, and during the transmission of bulk EVA composite plate on which below apply extruding force；Finally, by heating
Bulk EVA composite plate is heated by mechanism 5.Here want it should be noted that first bulk EVA composite plate is heated,
Apply extruding force again, and be heated for metal net layer 2.Specifically, feeding mechanism 41 passes and discharging mechanism 42 coordinates composition
4 bulk EVA composite plates of transporter move at heating arrangements 5, by the heating arrangements 5 gold to bulk EVA composite plate
Belonging to stratum reticulare 2 to heat, wherein, the mode of heating to metal net layer 2 is noncontact heating, makes heating arrangements 5 not destroy EVA multiple
The smoothness of the outer surface of plywood, and homogeneous heating.To in metal net layer 2 heating process, metal net layer 2 makes to be in contact with it
The surface melting of EVA plate 1, and molecule expands, and makes the molecule of two the EVA plates 1 contacted with metal net layer 2 pass through wire netting
The hole of layer 2 is bonding.After heating, in order to make the more firm of bonding, by hold down gag, bulk EVA composite plate is applied pressure
Power, thus complete the making of EVA composite plate.The EVA composite plate adding metal net layer can improve its intensity, applies in the external world
In the case of pulling force, EVA composite plate is unlikely to deform.
Wherein, bulk EVA composite plate relies on the EVA material bonding of self, and uniformly heats, uniform-compression power, passes through
This production technology, it is possible to produce even do not have alveolate EVA composite plate on a small quantity, make the structure of EVA composite plate smooth and
Performance is good.
It addition, further, on the basis of above-described embodiment, between step S1 and step S2, also include step S101,
Before bulk EVA composite plate enters feeding mechanism 41, by positioner 31, the both sides of bulk EVA composite plate are positioned.Can make
Bulk EVA composite plate can be alignd both sides, and the angle entering charging aperture 411 is suitable, so that bulk EVA composite plate can
Transmitted smoothly.
In the present embodiment, by regulation heating arrangements 5, the heating-up temperature making metal net layer 2 is more than 100 degree, and this is
Owing to the fusion temperature of EVA material is below 100 degree, and the time of fusing is shorter, in order to enable EVA material quickly to melt
Changing, the temperature of metal net layer 2 is above the fusion temperature of EVA material.
Further, in the above-described embodiments, the mode of heating arrangements 5 can be multiple, has preferred place with the most several
Formula illustrates.
Such as, heating arrangements 5 is radio frequency heating mechanism 5.
Radio frequency heating mechanism 5 is a kind of noncontact heating process heated by sensing, because the most direct with EVA composite plate
Contact, impacts thus without to the surface of EVA composite plate.EVA is made to be combined by the electromagnetic wave utilizing high-frequency ac to change
The molecule high-speed motion of the metal net layer 2 in plate, so that metal net layer 2 produces heat.It will be clear that metal net layer
2 is structure loosely, and it can quickly be heated by radio frequency heating mechanism 5.
It addition, such as, heating arrangements 5 is sensing heating arrangements 5.
Wherein, sensing heating arrangements 5 is intermediate frequency or high-frequency heating, produces alternating magnetic field and produces at metal net layer 2 same
The faradic current of frequency, this faradic current is unevenly distributed metal net layer 2, i.e. strong on surface, and in inside very
Weak, to heart portion close to 0, utilize this kelvin effect, metal net layer 2 surface can be made to heat rapidly, thus heat is passed to EVA
Plate 1, makes the surface melting that EVA plate 1 contacts with metal net layer 2, bonding.
In order to make the temperature close on the levels surface of metal net layer 2, heating arrangements 5 includes U-shaped adding heat pipe, i.e. adds heat pipe
Be shaped as " u "-shaped, the top and bottom of metal net layer 2 can be heated by the U-shaped heat pipe that adds simultaneously, makes metal net layer 2 quickly produce heat,
The inner layer surface of upper and lower two-layer EVA plate 1 is conducted heat, makes the inner layer surface toughness of EVA plate 1, simultaneously as high temperature can make EVA plate 1
Molecule expand, by the hole of metal net layer 2, make two-layer EVA plate 1 bonding, so that two-layer EVA plate 1 and middle metal
Stratum reticulare 2 bonds.
Further, on the basis of above-described embodiment, the extruding force in step S2 is to be applied by hold down gag, and compresses
Device is arranged between feeding mechanism 41 and discharging mechanism 42.
Needing exist for explanation, in the present embodiment, feeding mechanism 41 and the discharging mechanism 42 of EVA composite plate coordinate structure
It is multiple for having become transporter 4, load mode therein, such as carrier bar transmission, band transmission or drum-type transmission etc..Wherein,
Carrier bar transmission and band transmit and respectively bulk EVA composite plate are placed on carrier bar and belt, rely on carrier bar and the movement of belt and
Translation.Drum-type transmission refers to that feeding mechanism 41 and discharging mechanism 42 arrange two cylinders, it may be assumed that drive roll 423 and driven rolling
Cylinder 422, bulk EVA composite plate, by the gap between two cylinders, relies on two cylinders frictional force to bulk EVA composite plate
It is made to translate forward.
In the present embodiment, hold down gag is after heating arrangements 5, and hold down gag and heating arrangements 5 all across
The width of bulk EVA composite plate, it is possible to make bulk EVA composite plate thermally equivalent in the width direction and pressurization.Need exist for explanation
, owing to hold down gag should keep contacting with bulk EVA composite plate, bulk EVA composite plate is in the state of being stressed, therefore,
Hold down gag is rolling structure, moves along with bulk EVA composite plate and rotates.
Visible, in this embodiment, it is preferred that hold down gag is structure as a whole with discharging mechanism 42.It is, EVA is combined
Substrate transfer device 4 is drum-type transmission, relies on drive roll 423 and the follower rollers 422 frictional force to bulk EVA composite plate,
Bulk EVA composite plate is driven to move.In this process, follower rollers 422 above bulk EVA composite plate, drive roll
423 in the lower section of bulk EVA composite plate, and in rotation, drive roll 423 and follower rollers 422 are common to bulk EVA composite plate
It is applied with extruding force, makes the fastening that two-layer EVA plate 1 bonds.
Further, on the basis of above-described embodiment, after step s 3, also include step S4, to EVA composite plate by putting
Volume equipment 6 carries out rolling, is stored it by storage facilities 7 the most again.Namely by unwinding equipment 6, make
EVA composite plate carries out rolling from discharging opening 421 by unwinding equipment 6, and rolls on storage facilities 7, makes the EVA of lamellar be combined
The one-tenth of plate volume, is then placed in warehouse.
Additionally also have a kind of situation, after this step S4, also include step S5, by pressing equipment 8 to EVA composite plate
Carry out punching press, make the formation difformity of EVA composite plate.That is, EVA composite plate is directly processed, strikes out required
Shape.Step S4 here serves cushioning effect, and this is the speed due to EVA composite plate transporter 4 and pressing equipment 8
Speed different, in order to make whole production circuit work continuously, occur without the phenomenon of stagnation, be provided with rolling, storage, it can
With the speed between balance EVA composite plate transporter 4 and pressing equipment 8.
Certainly, be here noted that between step S4 and step S5, also include step S401, EVA composite plate from
Storage facilities 7 arrives pressing equipment 8, needs unwinding equipment 6 to unreel.That is, EVA composite plate passes through storage facilities 7, and arrival is put
Volume equipment 6, unreels again.Unwinding equipment 6 is the connection equipment of storage facilities 7 and pressing equipment 8.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. the production technology of an EVA composite plate, it is characterised in that this technique includes step:
Metal net layer is arranged between two EVA plates by S1, forms bulk EVA composite plate；
Bulk EVA composite plate is sent to discharging mechanism from feeding mechanism by S2, and right during the transmission of bulk EVA composite plate
Its top and bottom apply extruding force；
Bulk EVA composite plate is heated by S3 by heating arrangements, and coordinates the effect of extruding force to complete EVA composite plate finished product
Make.
The production technology of EVA composite plate the most according to claim 1, it is characterised in that between step S1 and step S2
Also include step S101, enter before feeding mechanism in bulk EVA composite plate, by positioner to bulk EVA composite plate two
Side positions.
The production technology of EVA composite plate the most according to claim 1, it is characterised in that described heating arrangements makes wire netting
Layer is heated to more than 100 degree.
The production technology of EVA composite plate the most according to claim 3, it is characterised in that described heating arrangements is that radio frequency adds
Heat engine structure.
The production technology of EVA composite plate the most according to claim 3, it is characterised in that described heating arrangements is that sensing adds
Heat engine structure.
6. according to the production technology of the EVA composite plate described in claim 4 or 5, it is characterised in that described heating arrangements includes U
Type adds heat pipe.
The production technology of EVA composite plate the most according to claim 1, it is characterised in that the extruding force in step S2 is logical
Cross hold down gag to apply, and described hold down gag is arranged between described feeding mechanism and discharging mechanism.
8. according to the production technology of the EVA composite plate described in claim 1 or 7, it is characterised in that after step s 3, also wrap
Include step S4, EVA composite plate is carried out rolling by unwinding equipment, by storage facilities, it is stored the most again.
The production technology of EVA composite plate the most according to claim 8, it is characterised in that after step s4, also includes step
Rapid S5, carries out punching press by pressing equipment to EVA composite plate, makes the formation difformity of EVA composite plate.
The production technology of EVA composite plate the most according to claim 9, it is characterised in that between step S4 and step S5
Also including step S401, EVA composite plate arrives described pressing equipment from described storage facilities, needs unwinding equipment to unreel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679779.3A CN106273993A (en) | 2016-08-17 | 2016-08-17 | The production technology of EVA composite plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679779.3A CN106273993A (en) | 2016-08-17 | 2016-08-17 | The production technology of EVA composite plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106273993A true CN106273993A (en) | 2017-01-04 |
Family
ID=57678243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610679779.3A Pending CN106273993A (en) | 2016-08-17 | 2016-08-17 | The production technology of EVA composite plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN106273993A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309291A (en) * | 2017-08-18 | 2017-11-03 | 莱州结力工贸有限公司 | A kind of ASP steel plastic compounts contour plate and its production equipment and method |
| CN113715373A (en) * | 2021-08-19 | 2021-11-30 | 赛林斯弥(无锡)电子科技有限公司 | Preparation method of high-strength acrylic plate |
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|---|---|---|---|---|
| DE2943071A1 (en) * | 1979-10-25 | 1981-05-14 | Hoechst Ag, 6000 Frankfurt | Composite sound absorbing sheet esp. for bonding to metal - has layer containing voids, thermoplastics layer and metal foil |
| CN2124132U (en) * | 1992-05-21 | 1992-12-09 | 杜春海 | Composite plastic board |
| CN102139550A (en) * | 2010-02-03 | 2011-08-03 | 何展辉 | Modified plastic steel copolymer composite plate material |
| CN105690914A (en) * | 2014-11-27 | 2016-06-22 | 比亚迪股份有限公司 | A composite board, a preparing method thereof and a housing |
-
2016
- 2016-08-17 CN CN201610679779.3A patent/CN106273993A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2943071A1 (en) * | 1979-10-25 | 1981-05-14 | Hoechst Ag, 6000 Frankfurt | Composite sound absorbing sheet esp. for bonding to metal - has layer containing voids, thermoplastics layer and metal foil |
| CN2124132U (en) * | 1992-05-21 | 1992-12-09 | 杜春海 | Composite plastic board |
| CN102139550A (en) * | 2010-02-03 | 2011-08-03 | 何展辉 | Modified plastic steel copolymer composite plate material |
| CN105690914A (en) * | 2014-11-27 | 2016-06-22 | 比亚迪股份有限公司 | A composite board, a preparing method thereof and a housing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309291A (en) * | 2017-08-18 | 2017-11-03 | 莱州结力工贸有限公司 | A kind of ASP steel plastic compounts contour plate and its production equipment and method |
| CN107309291B (en) * | 2017-08-18 | 2023-07-07 | 莱州结力工贸有限公司 | ASP steel-plastic composite contour plate and production equipment and method thereof |
| CN113715373A (en) * | 2021-08-19 | 2021-11-30 | 赛林斯弥(无锡)电子科技有限公司 | Preparation method of high-strength acrylic plate |
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Application publication date: 20170104 |