CN104249594A - Preparation method and manufacture equipment for multilayer stereo pattern - Google Patents
Preparation method and manufacture equipment for multilayer stereo pattern Download PDFInfo
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- CN104249594A CN104249594A CN201310256065.8A CN201310256065A CN104249594A CN 104249594 A CN104249594 A CN 104249594A CN 201310256065 A CN201310256065 A CN 201310256065A CN 104249594 A CN104249594 A CN 104249594A
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Abstract
The invention relates to a preparation method and manufacture equipment for a multilayer stereo pattern. In a transfer embossing process, a chromogenic material is processed by using one of the following methods: planographics printing, intaglio printing, flexographic printing, screen printing, physical vapour deposition and the like. A color film is formed on the surface of a base material or a third pattern structure, and the color film is utilized to match with different stereo pattern structures in order to form a multilayer stereo pattern. When used as shells of various electronic products, the multilayer stereo pattern helps to increase the aesthetic property, and also because the multilayer stereo pattern is inside coated with the color film, the color film is not easy to fall off and color loss does not happen, and the service life of the multilayer stereo pattern is prolonged.
Description
Technical field
The invention belongs to the field of substrate surface figure line transcription stamping technique, particularly relate to a kind of multilayer stereo figure line preparation method and manufacturing equipment thereof.
Background technology
Press, along with science and technology is maked rapid progress, variously be full of on the market as: 3C Products such as intelligent mobile phone, tablet PC and mobile computer, particularly intelligent mobile phone and tablet PC, because combining wireless network and action net etc., modern can be allowed to obtain up-to-date message whenever and wherever possible, and for modern, use intelligent mobile phone or tablet PC have become the some in daily life.
This kind of 3C Product, in order to pursue visual sense of beauty, usually can increase some decorations such as decorative pattern or color on shell, or utilizes as the material such as leather or silica gel, and builds the visual sense of beauty being different from traditional 3C Product.Because most of shell have employed plastic material, can utilize plastic injection integrated mode that the decorative pattern of solid is directly made in case surface; And the decorations such as the decorative pattern of plane or color are then made by modes such as baking vanish or spraying colourings, pollution can be produced when not only making, and come off to prevent or fade, also must carry out after-treatment, to guarantee durability when it uses.
In addition, for adopting the 3C Product using metal material as shell, because being limited to manufacturing technology, that is existing metal surface decoration treatment technology, as technology such as chemical stain, electrolytic coloring, decorative plating or metal surface etchings, then because cost is high and be difficult to reclaim and use and cannot having improved aesthetic appearance.Various traditional incrustation treatment technology, mostly only can do plane decoration process in case surface, and cannot reach the decorative effect of three-dimensional contouring, cannot meet the requirement of consumer for moulding attractive in appearance above.
Be with, the present inventor is once in No. I385078th, TaiWan, China patent of invention " ultraviolet photo-curing three-dimensional graphic transfer method ", refer to Fig. 1, it is the flow chart of steps of No. I385078th, TaiWan, China patent of invention, as shown in FIG., it discloses following manufacturing step, comprising: S11: provide a motherboard, and it processes through anti-being stained with and having one first picture and text structure; S12: a sub-film is provided, it is coated with one first optic-solidified adhesive; S13: roll extrusion is fitted this sub-film and this motherboard, to infiltrate the first optic-solidified adhesive to this first picture and text structure; S14: this first optic-solidified adhesive of photocuring, forms one second picture and text structure on sub-film; S15: from the sub-film of shape and motherboard; S16 a: base material is provided, it is coated with one second optic-solidified adhesive; S17: baking base material; S18: transcription second picture and text structure, in base material, make base material forms one the 3rd picture and text structure, and synchronizable optical solidifies the second optic-solidified adhesive; S19: just according to this base material of process.By this, and can be formed at this substrate surface and one have relief picture and text pattern, with significantly having improved aesthetic appearance.
But, the present inventor is not as limit, original technology is sublimate into another boundary further, color is incorporated into original ultraviolet photo-curing three-dimensional graphic transfer and the mode of the three-dimensional pattern made, and then show the preparation method of multilayer stereo figure line effect, significantly promote aesthetic property when using, and its durability also obtains and significantly promotes.
Summary of the invention
Object of the present invention, aim to provide a kind of multilayer stereo figure line preparation method and manufacturing equipment thereof, in order to do the mode utilizing the coated color films of stereoscopic pattern structure, and original stereoscopic pattern structure is made to become multi-level, to reach the effect of promoting base material aesthetic appearance.Meanwhile, also by this this color films of stereoscopic pattern structural defence, can not come off in time using, fade, and significantly promote effect of its durability.
For reaching above-mentioned purpose, in a kind of embodiment of the present invention, its multilayer stereo figure line preparation method comprises: provide a motherboard, a sub-film and a base material, and wherein this motherboard processes through anti-being stained with and having one first figure line structure, and this sub-film is light-transmitting materials and coated on one side one first optic-solidified adhesive; Roll extrusion is fitted this sub-film and this motherboard, and after sequentially carrying out transcription impression and photocuring, to form one second figure line structure on this sub-film; From this sub-film of shape and this motherboard; One chromonic materials is provided, is located at the one side of this base material and forms a color films; One second optic-solidified adhesive is coated with on this color films; Transcription impresses this second figure line structure on this second optic-solidified adhesive, this color films is located between this base material and this second optic-solidified adhesive, and synchronizable optical is solidified this second optic-solidified adhesive and forms one the 3rd figure line structure with multilayer stereo lines; One mould is provided, and heats this base material simultaneously, make this base material and the 3rd figure line structure have ductility; Use this mould to carry out punching press plastotype to this base material and the 3rd figure line structure, because this base material and the 3rd figure line structure have ductility, can not split by punching press; And just according to this base material of process.
In another embodiment of the present invention, multilayer stereo figure line preparation method comprises: provide a motherboard, a sub-film and a base material, wherein this motherboard processes through anti-being stained with and having one first figure line structure, this sub-film is light-transmitting materials and coated on one side one first optic-solidified adhesive, coated on one side one second optic-solidified adhesive of this base material; Roll extrusion is fitted this sub-film and this motherboard, and after sequentially carrying out transcription impression and photocuring, to form one second figure line structure on this sub-film; From this sub-film of shape and this motherboard; Transcription impresses this second figure line structure on this second optic-solidified adhesive, and synchronizable optical is solidified this second optic-solidified adhesive and forms one the 3rd figure line structure; One chromonic materials is provided, is located in the 3rd figure line structure and forms a color films; One the 3rd optic-solidified adhesive is coated with on this color films; Transcription impresses this second figure line structure on the 3rd optic-solidified adhesive, this color films is located between the 3rd figure line structure and the 3rd optic-solidified adhesive, and synchronizable optical is solidified the 3rd optic-solidified adhesive and form one the 4th figure line structure with multilayer stereo lines; One mould is provided, and heats this base material simultaneously, make this base material and the 4th figure line structure have ductility; Use this mould to carry out punching press plastotype to this base material, the 3rd figure line structure and the 4th figure line structure, because this base material, the 3rd figure line structure and the 4th figure line structure have ductility, can not split by punching press; And just according to this base material of process.
In above two kinds of embodiments, its transcription rate is verified up to 1:0.99 in front case, and the present invention further heats to proper temperature man-hour in follow-up to add with impact style plastotype, and this base material can be avoided to split when punching press.
Wherein this first figure line structure be selected from as: etching molding, laser carved, bore wherein a kind of manufacture craft and making such as carving molding and sandblasting molding etc., and the effect of decorative patterns of the various different figure line degree of depth, figure line width, figure line spacing, lustrous surface (roughness) and angle etc. can be made, considerably important for practical application.
And, in " chromonic materials is provided; and form a color films in the one side of this base material and/or the 3rd figure line structure " in step, be select to make as offset printing, intaglio printing, flexographic printing, wire mark printing and physical vapour deposition (PVD) a kind of method wherein.When selecting physical gas-phase deposite method, this chromonic materials is selected from as material one wherein such as nitride, carbide, carbonitride, oxide and nitrogen oxide, can be produced as shades of colours such as brown, yellow, green, grey, skipper, gold, bright grey, lead, black, purple and dirty-green by these chromonic materials, more helpful for application when using gradually layer or to mix colours.
Above two kinds of embodiments, be the use of a kind of multilayer stereo figure line manufacturing equipment, it comprises: a carrying platform, its two lateral margins system to should base material and this sub-film thickness and be respectively equipped with a raised line, this two raised line be arranged in parallel and forms a track, and this base material and this sub-film are positioned between this track; One warming module, is located at this carrying platform inner, is provided with heating this base material to 60 degree ~ 300 degree; One transfer printing module, be located at above this carrying platform, this transfer printing module has a roller body and a ultraviolet illumination unit, this roller body and this interorbital form one and set gap with this base material accommodating and this sub-film, and are suppressed fifty-fifty on this base material by this sub-film by this roller body and carry out transcription impression; One substrate holder, it has a fixed grip unit and a movable grip unit, this fixed grip unit is located at the side of this carrying platform, this movable grip unit is arranged at the opposite side of this carrying platform, and this fixed grip unit and this movable grip unit have clamped two ends of this sub-film from shape respectively; And an ejector pin component, be located between this carrying platform and this movable grip unit; When this sub-film of the downward roll extrusion of this roller body is to this base material, this movable grip unit is subject to the drive of this sub-film and moves down, when this ejector pin component moves up, then this movable grip unit by the drive of this sub-film, move by the direction upwards and towards this carrying platform.
Wherein, this setting gap is reached, to improve transcription rate the height of raised line and the downforce adjusting this roller body by adjusting this.
Accompanying drawing explanation
Fig. 1 is the flow chart of steps of No. I385078th, TaiWan, China patent of invention;
Fig. 2 is the flow chart of steps of first embodiment of the invention;
Fig. 3 is the structural representation of first embodiment of the invention;
Fig. 4 is the flow chart of steps of second embodiment of the invention;
Fig. 5 is the structural representation of first embodiment of the invention;
Fig. 6 is the structural representation of present pre-ferred embodiments manufacturing equipment;
Fig. 7 is the partial structurtes schematic diagram of present pre-ferred embodiments carrying platform.
Description of reference numerals: S11 ~ S19-step; S1-1 ~ S1-9-step; 1-motherboard; 11-first figure line structure; 2-film; 21-first optic-solidified adhesive; 22-second figure line structure; 3-substrate; 4-chromonic materials; 41-color films; 42-second optic-solidified adhesive; 43-the 3rd figure line structure; 5-mould;
S2-1 ~ S2-10-step; 6-the 3rd optic-solidified adhesive; 61-the 4th figure line structure; 7-manufacturing equipment; 71-carrying platform; 711-raised line; 712-track; 72-warming module; 73-transfer printing module; 731-roller body; 732-ultraviolet illumination unit; 74-substrate holder; The fixed grip unit of 741-; The movable grip unit of 742-; 75-ejector pin component; T-sets gap.
Detailed description of the invention
For making those skilled in the art can have a clear understanding of content of the present invention, only with the explanation of following two embodiments collocation Figure of description, please consult.
Embodiment one
As shown in Figure 2 and Figure 3, it is flow chart of steps and the structural representation thereof of first embodiment of the invention.As shown in FIG., the multilayer stereo figure line preparation method of first embodiment of the invention, comprises the following steps:
S1-1: provide motherboard 1, sub-film 2 and a base material 3, wherein this motherboard 1 processes through anti-being stained with and having one first figure line structure 11, and this sub-film 2 is light-transmitting materials and coated on one side one first optic-solidified adhesive 21.It should be noted, this motherboard 1 is selected as: stainless steel, electrotyping plate and quartz glass wherein a kind of and the slab construction body made, and this first figure line structure 11 of this motherboard 1 is with such as: etching molding, laser carved, bore the carving mode such as molding and sandblasting molding and make, to produce the effect of decorative patterns of the various different figure line degree of depth, figure line width, figure line spacing, lustrous surface (roughness) and angle etc., as shown in following table one.Further, this sub-film 2 is selected from polycarbonate (polycarbonate, PC), the diaphragms made by plastic material such as polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET).
Table one
S1-2: roll extrusion is fitted this sub-film 2 and this motherboard 1, and after sequentially carrying out transcription impression and photocuring, to form one second figure line structure 22 on this sub-film 2.
S1-3: from shape this sub-film 2 and this motherboard 1.By the two after shape, this second figure line structure 22 remaines in the surface of this sub-film 2.
S1-4 a: chromonic materials 4 is provided, is located at the one side of this base material 3 and forms a color films 41.It should be noted, this chromonic materials 4 selects to make as offset printing, intaglio printing, flexographic printing, wire mark printing and physical vapour deposition (PVD) a kind of method wherein.When particularly selecting physical gas-phase deposite method, this chromonic materials 4 is selected from as material one wherein such as nitride, carbide, carbonitride, oxide and nitrogen oxide, and can change over various different color, as shown in following table two:
Table two
S1-5: be coated with one second optic-solidified adhesive 42 on this color films 41.
S1-6: transcription impresses this second figure line structure 22 on this second optic-solidified adhesive 42, this color films 41 is located between this base material 3 and this second optic-solidified adhesive 42, and synchronizable optical is solidified this second optic-solidified adhesive 42 and form one the 3rd figure line structure 43 with multilayer stereo lines.Wherein the 3rd figure line structure 43 is fixed on the surface of this base material 3 together with this color films 41.
S1-7 a: mould 5 is provided, and heat this base material 3 simultaneously, make this base material 3 and the 3rd figure line structure 43 have ductility.
S1-8: use this mould 5 to carry out punching press plastotype to this base material 3 and the 3rd figure line structure 43, because this base material and the 3rd figure line structure 43 have ductility, can not split by punching press.
S1-9: just according to this base material 3 of process.
Embodiment two
As shown in Figure 4, Figure 5, it is flow chart of steps and the structural representation thereof of second embodiment of the invention.As shown in FIG., the multilayer stereo figure line preparation method of second embodiment of the invention, its raw material is identical in previous embodiment, and only step is slightly different, therefore element numbers continues to use previous embodiment, and only carries out label for the element numbers had more, and its step is as follows:
S2-1: provide motherboard 1, sub-film 2 and a base material 3, wherein this motherboard 1 processes through anti-being stained with and having one first figure line structure 11, and this sub-film 2 is light-transmitting materials and coated on one side one first optic-solidified adhesive 21, coated on one side one second optic-solidified adhesive 42 of this base material 3.
S2-2: roll extrusion is fitted this sub-film 2 and this motherboard 1, and after sequentially carrying out transcription impression and photocuring, to form one second figure line structure 22 on this sub-film 2.
S2-3: from shape this sub-film 2 and this motherboard 1.
S2-4: transcription impresses this second figure line structure 22 on this second optic-solidified adhesive 42, and synchronizable optical is solidified this second optic-solidified adhesive 42 and forms one the 3rd figure line structure 43.
S2-5: provide a chromonic materials 4, is located in the 3rd figure line structure 43 and forms a color films 41.
S2-6: be coated with one the 3rd optic-solidified adhesive 6 on this color films 41.
S2-7: transcription impresses this second figure line structure 22 on the 3rd optic-solidified adhesive 6, this color films 41 is located between the 3rd figure line structure 43 and the 3rd optic-solidified adhesive 6, and synchronizable optical is solidified this 3rd optic-solidified adhesive 6 and form one the 4th figure line structure 61 with multilayer stereo lines.
S2-8 a: mould 5 is provided, and heat this base material 3 simultaneously, make this base material 3 and the 4th figure line structure 61 have ductility.
S2-9: use this mould 5 to carry out punching press plastotype to this base material 3, the 3rd figure line structure 43 and the 4th figure line structure 61, because this base material 3, the 3rd figure line structure 43 and the 4th figure line structure 61 have ductility, can not split by punching press.
S2-10: just according to this base material 3 of process.
Refer to Fig. 6, Fig. 7, it is the structural representation of the manufacturing equipment of present pre-ferred embodiments, and the local structure schematic diagram of carrying platform.As shown in FIG., the manufacturing equipment 7 being used in above-mentioned two kinds of embodiments comprises carrying platform 71, warming module 72, transfer printing module 73, substrate holder 74 and an ejector pin component 75.
Wherein two lateral margins of this carrying platform 71 are respectively equipped with a raised line 711, and make these raised lines 711 be arranged in parallel and form a track 712, the height of this track 712 to should base material 3 and this sub-film 2 thickness and arrange, be provided with placing this base material 3 and this sub-film 2 in the inner.
This warming module 72 is located at the inside of this carrying platform 71, is provided with heating this base material 3 to 60 degree ~ 300 degree.
This transfer printing module 73 is located at the top of this carrying platform 71, this transfer printing module 73 has roller body 731 and a ultraviolet illumination unit 732, form one between this roller body 731 and this track 712 and set gap T with this base material 3 accommodating and this sub-film 2, and by this roller body 731, this sub-film 2 suppressed fifty-fifty on this base material 3 and carry out transcription impression.Further, this setting gap T reaches the height of raised line 711 and the downforce adjusting this roller body 731 by adjusting this, can be used to corresponding this sub-film 2 or this base material 3 of using different-thickness, and can improve its transcription rate.
This substrate holder 74 has fixed grip unit 741 and a movable grip unit 742, this fixed grip unit 741 is located at the side of this carrying platform 71, this movable grip unit 742 is arranged at the opposite side of this carrying platform 71, and this fixed grip unit 741 and this movable grip unit 742 have clamped two ends of this sub-film 2 from shape respectively.
This ejector pin component 75 is located between this carrying platform 71 and this movable grip unit 742; When this sub-film 2 of roll extrusion is to this base material 3 downwards for this roller body 2, this movable grip unit 742 is subject to the drive of this sub-film 2 and moves down, when this ejector pin component 75 moves up, then this movable grip unit 742 by this sub-drive of film 2, move by the direction upwards and towards this carrying platform 71.
Only; as described above; be only preferred embodiment of the present invention; and be not used to limit scope of the invention process; therefore the done equivalence of those skilled in the art or easily change person; change and modification with the equalization done under scope not departing from the present invention's spirit, all should be covered by protection scope of the present invention.
Claims (10)
1. a multilayer stereo figure line preparation method, it comprises:
There is provided a motherboard, a sub-film and a base material, wherein this motherboard processes through anti-being stained with and having one first figure line structure, and this sub-film is light-transmitting materials and coated on one side one first optic-solidified adhesive;
Roll extrusion is fitted this sub-film and this motherboard, and after sequentially carrying out transcription impression and photocuring, to form one second figure line structure on this sub-film;
From this sub-film of shape and this motherboard;
One chromonic materials is provided, is located at the one side of this base material and forms a color films;
One second optic-solidified adhesive is coated with on this color films;
Transcription impresses this second figure line structure on this second optic-solidified adhesive, this color films is located between this base material and this second optic-solidified adhesive, and synchronizable optical is solidified this second optic-solidified adhesive and forms one the 3rd figure line structure with multilayer stereo lines;
One mould is provided, and heats this base material simultaneously, make this base material and the 3rd figure line structure have ductility;
Use this mould to carry out punching press plastotype to this base material and the 3rd figure line structure, because this base material and the 3rd figure line structure have ductility, can not split by punching press; And
Just according to this base material of process.
2. multilayer stereo figure line preparation method as claimed in claim 1, wherein, this first figure line structure be selected from as: etching molding, laser carved, bore wherein a kind of manufacture craft and making such as carving molding and sandblasting molding etc.
3. multilayer stereo figure line preparation method as claimed in claim 1, in " providing a chromonic materials; be located at the one side of this base material and form a color films " step, select and make as offset printing, intaglio printing, flexographic printing, wire mark printing and physical vapour deposition (PVD) a kind of method wherein.
4. multilayer stereo figure line preparation method as claimed in claim 3, wherein, when selecting physical gas-phase deposite method, this chromonic materials is selected from as material one wherein such as nitride, carbide, carbonitride, oxide and nitrogen oxide.
5. a multilayer stereo figure line preparation method, it comprises:
There is provided a motherboard, a sub-film and a base material, wherein this motherboard processes through anti-being stained with and having one first figure line structure, and this sub-film is light-transmitting materials and coated on one side one first optic-solidified adhesive, coated on one side one second optic-solidified adhesive of this base material;
Roll extrusion is fitted this sub-film and this motherboard, and after sequentially carrying out transcription impression and photocuring, to form one second figure line structure on this sub-film;
From this sub-film of shape and this motherboard;
Transcription impresses this second figure line structure on this second optic-solidified adhesive, and synchronizable optical is solidified this second optic-solidified adhesive and forms one the 3rd figure line structure;
One chromonic materials is provided, is located in the 3rd figure line structure and forms a color films;
One the 3rd optic-solidified adhesive is coated with on this color films;
Transcription impresses this second figure line structure on the 3rd optic-solidified adhesive, this color films is located between the 3rd figure line structure and the 3rd optic-solidified adhesive, and synchronizable optical is solidified the 3rd optic-solidified adhesive and form one the 4th figure line structure with multilayer stereo lines;
One mould is provided, and heats this base material simultaneously, make this base material and the 4th figure line structure have ductility;
Use this mould to carry out punching press plastotype to this base material, the 3rd figure line structure and the 4th figure line structure, because this base material, the 3rd figure line structure and the 4th figure line structure have ductility, can not split by punching press; And
Just according to this base material of process.
6. multilayer stereo figure line preparation method as claimed in claim 1, wherein, this first figure line structure be selected from as: etching molding, laser carved, bore wherein a kind of manufacture craft and making such as carving molding and sandblasting molding etc.
7. multilayer stereo figure line preparation method as claimed in claim 1, in " providing a chromonic materials; be located in the 3rd figure line structure and form a color films " step, select and make as offset printing, intaglio printing, flexographic printing, wire mark printing and physical vapour deposition (PVD) a kind of method wherein.
8. multilayer stereo figure line preparation method as claimed in claim 7, wherein, when selecting physical gas-phase deposite method, this chromonic materials is selected from as material one wherein such as nitride, carbide, carbonitride, oxide and nitrogen oxide.
9. be used in a manufacturing equipment for multilayer stereo figure line preparation method according to claim 5, it comprises:
One carrying platform, its two lateral margin to should base material and this sub-film thickness and be respectively equipped with a raised line, this two tab parallel arranges and forms a track, and this base material and this sub-film are positioned between this track;
One warming module, is located at this carrying platform inner, is provided with heating this base material to 60 degree ~ 300 degree;
One transfer printing module, be located at above this carrying platform, this transfer printing module has a roller body and a ultraviolet illumination unit, this roller body and this interorbital form one and set gap with this base material accommodating and this sub-film, and are suppressed fifty-fifty on this base material by this sub-film by this roller body and carry out transcription impression;
One substrate holder, it has a fixed grip unit and a movable grip unit, this fixed grip unit is located at the side of this carrying platform, this movable grip unit is arranged at the opposite side of this carrying platform, and this fixed grip unit and this movable grip unit have clamped two ends of this sub-film from shape respectively; And
One ejector pin component, is located between this carrying platform and this movable grip unit; When this sub-film of the downward roll extrusion of this roller body is to this base material, this movable grip unit is subject to the drive of this sub-film and moves down, when this ejector pin component moves up, then this movable grip unit by the drive of this sub-film, move by the direction upwards and towards this carrying platform.
10. manufacturing equipment as claimed in claim 9, wherein, this setting gap is reached, to improve transcription rate the height of raised line and the downforce adjusting this roller body by adjusting this.
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| CN106976350A (en) * | 2016-01-19 | 2017-07-25 | 瑞宏精密电子（太仓）有限公司 | Imprint sheet material and its method for stamping |
| TWI621498B (en) * | 2016-06-23 | 2018-04-21 | Laminated wooden laser engraving structure construction | |
| TWI661949B (en) * | 2017-08-18 | 2019-06-11 | 仁寶電腦工業股份有限公司 | Transfer film and manufacturing method thereof |
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| US20130004753A1 (en) * | 2011-06-29 | 2013-01-03 | Debasis Majumdar | Article with metal grid composite and methods of preparing |
| CN202685530U (en) * | 2012-07-31 | 2013-01-23 | 非翌股份有限公司 | Automatic film transfer machine |
| TWI385078B (en) * | 2011-03-15 | 2013-02-11 |
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| CN102019804A (en) * | 2009-09-14 | 2011-04-20 | 仁宝电脑工业股份有限公司 | Production method of three-dimensional pattern |
| TWI385078B (en) * | 2011-03-15 | 2013-02-11 | ||
| US20130004753A1 (en) * | 2011-06-29 | 2013-01-03 | Debasis Majumdar | Article with metal grid composite and methods of preparing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106976350A (en) * | 2016-01-19 | 2017-07-25 | 瑞宏精密电子（太仓）有限公司 | Imprint sheet material and its method for stamping |
| TWI621498B (en) * | 2016-06-23 | 2018-04-21 | Laminated wooden laser engraving structure construction | |
| TWI661949B (en) * | 2017-08-18 | 2019-06-11 | 仁寶電腦工業股份有限公司 | Transfer film and manufacturing method thereof |
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