CN101844480B - Seamless laser graphic transfer technology between basilar membranes - Google Patents

Seamless laser graphic transfer technology between basilar membranes Download PDF

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Publication number
CN101844480B
CN101844480B CN201010155919XA CN201010155919A CN101844480B CN 101844480 B CN101844480 B CN 101844480B CN 201010155919X A CN201010155919X A CN 201010155919XA CN 201010155919 A CN201010155919 A CN 201010155919A CN 101844480 B CN101844480 B CN 101844480B
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China
Prior art keywords
basement membrane
transfer
seamless
roller
membrane
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Expired - Fee Related
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CN201010155919XA
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CN101844480A (en
Inventor
谭正国
徐斯伦
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Jiangsu Zhongyin Printing Group Co., Ltd.
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Jiangyin Bluesky Printing Co Ltd
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Abstract

The invention discloses a seamless laser graphic transfer technology between basilar membranes, which comprises the following steps: coating: coating laser transfer paint on one side of a basilar membrane A by a coating machine, and then heating, drying and curing the paint; mould pressing: carrying out double-roll mould pressing on the basilar membrane A by a printing roller and a compression roller on a mould pressing machine, and then transferring the laser graphics on the printing roller after mould pressing onto the transfer basilar membrane A so as to reach the seamless effect; membrane combining: arranging the transfer basilar membrane A on a die assembly machine which overlaps with the transfer basilar membrane A and the basilar membrane B which are provided with seamless laser graphics on the surface, and then mould pressing the membranes together via a membrane combining compression roller; and stripping: stripping the transfer basilar membrane A and the basilar membrane B after combination by a cutting machine, the seamless laser graphic information on the transfer basilar membrane A is transferred to the surface of the basilar membrane B at this time, the seamless laser graphic information on the transfer basilar membrane A still exists, and the membrane combination and stripping processes can be repeated for many times. The technology can greatly reduce the use amount of the transfer membranes.

Description

Seamless laser graphic transfer technology between a kind of basement membrane
Technical field
The present invention relates to a kind of transfer printing technology, be specifically related to the seamless laser graphic transfer technology between a kind of basement membrane.
Background technology
The molding laser printing is a high-tech typography, integrates false proof and advantage aesthetic feeling and is widely used in advertisement, illustration and packaging field owing to laser graphic has.The method of prior art laser molding is, at first lithographic plate mold pressing version volume is attached on the cylindrical mold pressing roll, thereby has the seam of mold pressing version inevitably; The laser molding product that utilizes such mold pressing version and molding device to produce; For example oriented polypropylene (OPP) (OPP) film, PETG (PET) film and polyvinyl chloride (PVC) film and paper etc.; The laser graphic that is stamped in above them exists version seam so that picture and text discontinuous owing to the mold pressing version has seam, and the existence of version seam has a strong impact on the application of laser molding product on web feed printing equipment.When printing figure message is printed on version when sewing on, just can produce spoilage; At present; The mold pressing version that some printing producer adopts expensive jumping seam device when printing, to skip on the laser molding product is stitched the generation of avoiding spoilage; But jumping seam device is very expensive and need special mold pressing producer give close cooperation; Therefore, adopting the mode of jumping the seam device to be difficult in the printing industry promotes.
Publication number is that the U.S. Patent application of US2004/0256052A1 discloses a kind of no-slot laser molding method, adopts cylindrical seamless molded plate, solved the problem of version seam to a certain extent, but production efficiency is not high.
In addition in the prior art; The radium-shine printing of mould all needs to make earlier publishes roller; Be exactly with planar nickel plate Bao Rao on the prototype cylinder; Then laser transfer coatings is coated on equably the one side of transfer basement membrane, the graph text information on the version roller is transferred on the basement membrane through roll extrusion with version roller and pressure roller, this transfer basement membrane can only be used disposable.Therefore, the use amount of basement membrane is bigger, wastes more seriously, and simultaneously the use amount of version roller also can be more.This will be unfavorable for the reduction of printing cost and the raising of product quality.
Summary of the invention
The objective of the invention is to overcome defective of the prior art; Designed the seamless laser graphic transfer technology between a kind of basement membrane, this technology can be lacked the use amount of transfer membrane significantly at a low price, reduces the number of times of making the roller version; All right stabilized product quality is enhanced productivity.
For realizing above-mentioned purpose, technical scheme of the present invention has adopted the seamless laser graphic transfer technology between a kind of basement membrane, it is characterized in that, said shifting process comprises the steps:
First step coating is coated on the one side of A transfer basement membrane with coating machine with laser transfer coatings equably, is heated oven dry then, solidifies after the oven dry 20~30 hours again;
The second step mold pressing; The A transfer basement membrane that is cured is carried out the pair roller mold pressing with version roller and pressure roller on the moulding press; Said version roller and pressure roller respectively have two; Need said version roller and/or pressure roller heating be equipped with axial hot-zone and cold-zone in said two version rollers during mold pressing, through cooperating of hot-zone between said two version rollers and cold-zone; Laser graphic after the mold pressing on said two version rollers is transferred on the said A transfer basement membrane and can be reached seamless effect, when mold pressing, the one side that scribbles laser transfer coatings on the said A transfer basement membrane is contacted with said two version rollers;
The 3rd step was closed film; The A transfer basement membrane of surface with seamless laser graphic is installed on the clapper die spotting press; In said clapper die spotting press, be provided with an involutory mould roller at least; The said mould roller that closes is heated, the A transfer basement membrane of surface with seamless laser graphic is embossed in it through an involutory mould roller with the B basement membrane is overlapping then at least;
The 4th step peeled off; With cutting machine above-mentioned A transfer basement membrane and the B basement membrane that closes behind the film cut separation; Seamless laser graphic information on the A transfer basement membrane has been transferred to the surface of B basement membrane at this moment; Simultaneously the seamless laser graphic information on the A transfer basement membrane still exists, and above-mentionedly closes film and stripping technology can repeatedly repeat.
Among the present invention, be respectively arranged with unwinding device and wrap-up in said coating machine, moulding press, the rear and front end of closing film machine and cutting machine; With A transfer basement membrane, B basement membrane, or the A transfer basement membrane after coating, oven dry, or the A transfer basement membrane behind the ECDC membrane process and B basement membrane are installed in respectively on the unwinding device of above-mentioned each machine; With the A transfer basement membrane after coating, the oven dry, after the mold pressing the A transfer basement membrane, close A transfer basement membrane and B basement membrane behind the film, A transfer basement membrane and B basement membrane after peeling off be installed in respectively on the wrap-up of above-mentioned each machine.
Among the present invention; Said clapper die spotting press, cutting machine unreel with wrap-up on be respectively equipped with the electronics tracker and unreel synchronized, said electronics tracker with unreel synchronized and be used to control that said A transfer basement membrane is rolled up with the synchronous retractable of B basement membrane and the speed of service of A transfer basement membrane and B basement membrane.
Among the present invention; In said coating process; With in said unwinding device and the wrap-up unreel and the Tension Control of rolling between 8kg~12kg; The speed of service of said A transfer basement membrane is controlled between 90m/min~110m/min, the temperature of said oven dry is controlled between 80 °~130 °.
Among the present invention; In said mould pressing process; Molding pressure between said version roller and the said pressure roller is controlled between 1.5kg~2.5kg, between one 158 °~162 ° of hot-zone heating and temperature control in said two version rollers, between 163 °~168 ° of the hot-zone heating and temperature control of another root.
In the present invention, in said moulding press, said two version rollers are arranged on a side that scribbles laser transfer coatings on the said A transfer basement membrane, and make between two version rollers and be spaced a distance.
Among the present invention; In said mould pressing process with the Tension Control that unreels in the said unwinding device between 8kg~10kg; Between 5kg~7kg, the speed of service with said A transfer basement membrane when mold pressing is controlled between 30m/min~40m/min with the Tension Control of rolling in the wrap-up.
Among the present invention; In the said Tension Control that unreels in the unwinding device with said A transfer basement membrane and B basement membrane in the membrane process of closing between 5kg~7kg; With the Tension Control of rolling in the wrap-up between 6kg~8kg; Close with said that molding pressure is controlled between 1.5kg~2.5kg between the mould roller, when said mold pressing, the said mould roller that closes is heated between 120 °~140 °, the speed of service of said A transfer basement membrane and B basement membrane is controlled between 30m/min~40m/min.
Among the present invention, said A transfer basement membrane is: the PETG plastic foil, said B basement membrane is: the oriented polypropylene (OPP) plastic foil.
Among the present invention, the thickness of said A transfer basement membrane is 14 μ m~18 μ m, and the thickness of said B basement membrane is 22 μ m~28 μ m.
Advantage of the present invention and beneficial effect are: owing to adopted the seamless laser graphic information transfer technology between basement membrane and the basement membrane in the present invention, and can be used by repeated multiple times with the basement membrane of laser transfer coatings, general available more than 20 times.Therefore, this technology can be lacked the use amount of transfer membrane significantly at a low price, can reduce the number of times of making the roller version simultaneously, and all right stabilized product quality is enhanced productivity.
Description of drawings
Fig. 1 is a coating process sketch map during seamless laser graphic shifts between the basement membrane of the present invention;
Fig. 2 is the principle schematic of seamless mold pressing among Fig. 1;
Fig. 3 is a mould pressing process sketch map during seamless laser graphic shifts between the basement membrane of the present invention
Fig. 4 is that seamless laser graphic closes the membrane process sketch map in shifting between the basement membrane of the present invention;
Fig. 5 is a stripping technology sketch map during seamless laser graphic shifts between the basement membrane of the present invention.
Among the figure: 1, coating machine; 2, A transfer basement membrane; 3, drying plant; 4, moulding press; 5,6, version roller; 6-1, hot-zone; 6-2, cold-zone; 6-3, version seam; 7,8, pressure roller; 9, clapper die spotting press; 10,11, close the mould roller; 12, B basement membrane; 13, cutting machine; 14, unwinding device; 15, wrap-up; 16, electronics tracker; 17, unreel synchronized.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention further describes.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Shown in accompanying drawing 1, the technical scheme of practical implementation of the present invention is:
Seamless laser graphic transfer technology between a kind of basement membrane, this shifting process comprises the steps:
First step coating process is coated on the one side of A transfer basement membrane 2 with coating machine 1 with laser transfer coatings equably, is heated oven dry with drying plant 3 then, solidifies after the oven dry 24 hours again;
The second step mold pressing; Version roller 5,6 and pressure roller 7,8 on the A transfer basement membrane that the is cured 2 usefulness moulding press 4 are carried out the pair roller mold pressing; Said version roller and pressure roller respectively have two; Need said version roller 5,6 and/or pressure roller 7,8 heating (using deep fat) be equipped with axial hot-zone 6-1 and cold-zone 6-2 in said two version rollers during mold pressing, through cooperating of hot-zone 6-1 between said two version rollers and cold-zone 6-2; Laser graphic after the mold pressing on said two version rollers 5,6 is transferred on the said A transfer basement membrane 2 and can be reached seamless effect, when mold pressing, need the one side that scribble laser transfer coatings on the said A transfer basement membrane be contacted with said two version rollers;
(principle of above-mentioned seamless mold pressing is: the graph text information on the hot-zone 6-1 of first version roller 6 can be transferred on the A transfer basement membrane 2 through mold pressing; And the version seam 6-3 part that is positioned on the 6-2 of cold-zone is not transferred on the A transfer basement membrane; And second with the hot-zone of example edition roller 5 with first version roller not the picture and text of transfer portion remedy; Second version roller 5 same cold-zone is over-molded on first version roller 6 and shifted on the position of graph text information; Remainder can shift because the graph text information of two version rollers 5,6 is identical with being repeated, and therefore can make does not have the version seam on the A transfer basement membrane 2 after being transferred)
The 3rd step was closed film; The A transfer basement membrane 2 of surface with seamless laser graphic is installed on the clapper die spotting press 9; In said clapper die spotting press 9, be provided with an involutory mould roller 10,11 at least; Close mould roller 10,11 heating (use deep fat) with said, the A transfer basement membrane 2 of the surface being had a seamless laser graphic is embossed in it through an involutory mould roller 10,11 with B basement membrane 12 is overlapping then at least;
The 4th step peeled off; With cutting machine 13 the above-mentioned A transfer basement membrane 2 that closes behind the film is cut separation with B basement membrane 12; Seamless laser graphic information on the A transfer basement membrane 2 has been transferred to the surface of B basement membrane 12 at this moment; Simultaneously the seamless laser graphic information on the A transfer basement membrane 2 still exists, and above-mentionedly closes film and stripping technology can repeatedly repeat.
On the basis of the foregoing description, preferred embodiment of the present invention also comprises, is respectively arranged with unwinding device 14 and wrap-up 15 in said coating machine 1, moulding press 4, the rear and front end of closing film machine 9 and cutting machine 13; With A transfer basement membrane 2, B basement membrane 12, or the A transfer basement membrane 2 after coating, oven dry, or the A transfer basement membrane behind the ECDC membrane process 2 is installed in respectively on the unwinding device 14 of above-mentioned each machine with B basement membrane 12; With the A transfer basement membrane 2 after coating, the oven dry, after the mold pressing A transfer basement membrane 2, close A transfer basement membrane 2 behind the film A transfer basement membrane 2 and be installed in respectively on the wrap-up 15 of above-mentioned each machine with B basement membrane 12 with B basement membrane 12, after peeling off.
On the basis of the foregoing description; Preferred embodiment of the present invention also comprises; On the unwinding device 14 of said clapper die spotting press 9, cutting machine 13 and wrap-up 15, be respectively equipped with electronics tracker 16 and unreel synchronized 17, said electronics tracker 16 with unreel synchronized 17 and be used to control the speed of service of said A transfer basement membrane 2 and B basement membrane 12 synchronous retractables volumes and A transfer basement membrane 2 and B basement membrane 12.
On the basis of the foregoing description; Preferred embodiment of the present invention also comprises; In said coating process; With in said unwinding device 14 and the wrap-up 15 unreel and the Tension Control of rolling between 8kg~12kg, the speed of service of said A transfer basement membrane 2 is controlled between 90m/min~110m/min, the temperature of said drying plant 3 is controlled between 80 °~130 °.
On the basis of the foregoing description; Preferred embodiment of the present invention also comprises; In said mould pressing process; With said version roller 5,6 and said pressure roller 7, molding pressure between 8 be controlled at 1.5kg~2.5g~between, between one 158 °~162 ° of hot-zone heating and temperature control in said two version rollers 5,6, between 163 °~168 ° of the hot-zone heating and temperature control of another root.
On the basis of the foregoing description, preferred embodiment of the present invention also comprises, in said moulding press 4, said two version rollers 5,6 is arranged on a side that scribbles laser transfer coatings on the said A transfer basement membrane 2, and makes two version rollers 5, is spaced a distance between 6.
On the basis of the foregoing description; Preferred embodiment of the present invention also comprises; In said mould pressing process with the Tension Control that unreels in the said unwinding device 14 between 8kg~10kg; Between 5kg~7kg, the speed of service with said A transfer basement membrane 2 when mold pressing is controlled between 30m/min~40m/min with the Tension Control of rolling in the wrap-up 15.
On the basis of the foregoing description; Preferred embodiment of the present invention also comprises; In the said Tension Control that unreels in the unwinding device 14 with said A transfer basement membrane 2 and B basement membrane 12 in the membrane process of closing between 5kg~7kg; With the Tension Control of rolling in the wrap-up 15 between 6kg~8kg, with said a pair of matched moulds pressure roller 10, molding pressure is controlled between 1.5kg~2.5kg between 11, when said mold pressing; The said mould roller 10,11 that closes is heated between 120 °~140 °, the speed of service of said A transfer basement membrane 2 and B basement membrane 12 is controlled between 30m/min~40m/min.
On the basis of the foregoing description, preferred embodiment of the present invention comprises that also said A transfer basement membrane 2 is: the PETG plastic foil, said B basement membrane 12 is: the oriented polypropylene (OPP) plastic foil.
On the basis of the foregoing description, preferred embodiment of the present invention comprises that also the thickness of said A transfer basement membrane 2 is 14 μ m~18 μ m, and the thickness of said B basement membrane 12 is 22 μ m~28 μ m.
In the present invention, the another kind of preparation method of employed seamless version roller is:
A, size and picture and text direction are as requested produced lithographic plate mold pressing nickel mother matrix with conventional method;
B, said lithographic plate mold pressing nickel mother matrix faced by picture and text in butt joint be rolled into the cylindrical nickel mother matrix, and with arc sheetmetal with two butt end joint faces of said cylindrical nickel mother matrix calmly by adhesive in joint;
C, seal with insulated enclosure material 10 centimetres of inner surfaces in two ends with interior length with said nickel mother matrix outer surface and cylinder two lateral sections;
D, the cylindrical nickel mother matrix of above-mentioned good seal is put into the electroforming platemaking machine carry out electroforming;
E. treat that the electroforming of said cylindrical nickel mother matrix inner surface to needs thickness, takes out it from electrotyping bath, then the electroformed layer of said nickel mother matrix and its inner surface peeled off that said electroformed layer is cylindrical seamless molded plate.;
F, cylindrical seamless molded plate is enclosed between two mold pressing roll, these two mold pressing roll cooperate with other two mold pressing roll again, and basement membrane mold pressing between seamless molded plate and mold pressing roll is passed through, and the picture and text on the seamless molded plate are transferred on the basement membrane.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims (10)

1. the seamless laser graphic transfer technology between the basement membrane is characterized in that said shifting process comprises the steps:
First step coating is coated on the one side of A transfer basement membrane with coating machine with laser transfer coatings equably, is heated oven dry then, solidifies after the oven dry 20~30 hours again;
The second step mold pressing; The A transfer basement membrane that is cured is carried out the pair roller mold pressing with version roller and pressure roller on the moulding press; Said version roller and pressure roller respectively have two; Need said version roller and/or pressure roller heating be equipped with axial hot-zone and cold-zone in said two version rollers during mold pressing, through cooperating of hot-zone between said two version rollers and cold-zone; Laser graphic after the mold pressing on said two version rollers is transferred on the said A transfer basement membrane and can be reached seamless effect, when mold pressing, the one side that scribbles laser transfer coatings on the said A transfer basement membrane is contacted with said two version rollers;
The 3rd step was closed film; The A transfer basement membrane of surface with seamless laser graphic is installed on the clapper die spotting press; In said clapper die spotting press, be provided with an involutory mould roller at least; The said mould roller that closes is heated, the A transfer basement membrane of surface with seamless laser graphic is embossed in it through an involutory mould roller with the B basement membrane is overlapping then at least;
The 4th step peeled off; With cutting machine above-mentioned A transfer basement membrane and the B basement membrane that closes behind the film cut separation; Seamless laser graphic information on the A transfer basement membrane has been transferred to the surface of B basement membrane at this moment; Simultaneously the seamless laser graphic information on the A transfer basement membrane still exists, and above-mentionedly closes film and stripping technology can repeatedly repeat.
2. the seamless laser graphic transfer technology between the basement membrane according to claim 1 is characterized in that, is respectively arranged with unwinding device and wrap-up in said coating machine, moulding press, the rear and front end of closing film machine and cutting machine; With A transfer basement membrane, B basement membrane, or the A transfer basement membrane after coating, oven dry, or the A transfer basement membrane behind the ECDC membrane process and B basement membrane are installed in respectively on the unwinding device of above-mentioned each machine; With the A transfer basement membrane after coating, the oven dry, after the mold pressing the A transfer basement membrane, close A transfer basement membrane and B basement membrane behind the film, A transfer basement membrane and B basement membrane after peeling off be installed in respectively on the wrap-up of above-mentioned each machine.
3. the seamless laser graphic transfer technology between the basement membrane according to claim 2; It is characterized in that; Said clapper die spotting press, cutting machine unreel with wrap-up on be respectively equipped with the electronics tracker and unreel synchronized, said electronics tracker with unreel synchronized and be used to control that said A transfer basement membrane is rolled up with the synchronous retractable of B basement membrane and the speed of service of A transfer basement membrane and B basement membrane.
4. the seamless laser graphic transfer technology between the basement membrane according to claim 2; It is characterized in that; In said coating process; With in said unwinding device and the wrap-up unreel and the Tension Control of rolling between 8kg~12kg, the speed of service of said A transfer basement membrane is controlled between 90m/min~110m/min, the temperature of said oven dry is controlled between 80 °~130 °.
5. the seamless laser graphic transfer technology between the basement membrane according to claim 2; It is characterized in that; In said mould pressing process; Molding pressure between said version roller and the said pressure roller is controlled between 1.5kg~2.5kg, between one 158 °~162 ° of hot-zone heating and temperature control in said two version rollers, between 163 °~168 ° of the hot-zone heating and temperature control of another root.
6. the seamless laser graphic transfer technology between the basement membrane according to claim 5; It is characterized in that; In said moulding press, said two version rollers are arranged on a side that scribbles laser transfer coatings on the said A transfer basement membrane, and make between two version rollers and be spaced a distance.
7. the seamless laser graphic transfer technology between the basement membrane according to claim 6; It is characterized in that; In said mould pressing process with the Tension Control that unreels in the said unwinding device between 8kg~10kg; Between 5kg~7kg, the speed of service with said A transfer basement membrane when mold pressing is controlled between 30m/min~40m/min with the Tension Control of rolling in the wrap-up.
8. the seamless laser graphic transfer technology between the basement membrane according to claim 2; It is characterized in that; In the said Tension Control that unreels in the unwinding device with said A transfer basement membrane and B basement membrane in the membrane process of closing between 5kg~7kg; With the Tension Control of rolling in the wrap-up between 6kg~8kg; Molding pressure between the said one involutory mould roller is controlled between 1.5kg~2.5kg, when said mold pressing, the said mould roller that closes is heated between 120 °~140 °, the speed of service of said A transfer basement membrane and B basement membrane is controlled between 30m/min~40m/min.
9. according to the seamless laser graphic transfer technology between each described basement membrane in the claim 1 to 8, it is characterized in that said A transfer basement membrane is: the PETG plastic foil, said B basement membrane is: the oriented polypropylene (OPP) plastic foil.
10. the seamless laser graphic transfer technology between the basement membrane according to claim 9 is characterized in that, the thickness of said A transfer basement membrane is 14 μ m~18 μ m, and the thickness of said B basement membrane is 22 μ m~28 μ m.
CN201010155919XA 2010-04-27 2010-04-27 Seamless laser graphic transfer technology between basilar membranes Expired - Fee Related CN101844480B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103264587B (en) * 2013-04-28 2015-10-21 广东万昌印刷包装股份有限公司 Be applied to the production typography of laser label
CN103514804B (en) * 2013-09-26 2015-11-18 江苏中印印务集团有限公司 A kind of production technology of laser micro picture and text anti false film
CN108501504B (en) * 2018-03-27 2019-07-23 汕头市嘉信包装材料有限公司 A kind of production method of seamless forging printing plate roller

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Publication number Priority date Publication date Assignee Title
US5601022A (en) * 1994-08-27 1997-02-11 Man Roland Druckmaschinen Ag Process and device for producing a printing form with a narrow transfer foil
KR20060001990A (en) * 2005-12-23 2006-01-06 동진기연 주식회사 Transcription film inducing the crack in the clothes
CN1772498A (en) * 2005-09-12 2006-05-17 伟诚实业(深圳)有限公司 No-plate seam holographic molding method and device
CN101407142A (en) * 2007-10-12 2009-04-15 谭日和 Seamless laser molding method
CN101618630A (en) * 2009-08-12 2010-01-06 江阴市兰天彩印包装有限公司 Anti-counterfeiting transfer printing technology
CN101642977A (en) * 2009-09-03 2010-02-10 吴小华 Seamless laser molding press

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5601022A (en) * 1994-08-27 1997-02-11 Man Roland Druckmaschinen Ag Process and device for producing a printing form with a narrow transfer foil
CN1772498A (en) * 2005-09-12 2006-05-17 伟诚实业(深圳)有限公司 No-plate seam holographic molding method and device
KR20060001990A (en) * 2005-12-23 2006-01-06 동진기연 주식회사 Transcription film inducing the crack in the clothes
CN101407142A (en) * 2007-10-12 2009-04-15 谭日和 Seamless laser molding method
CN101618630A (en) * 2009-08-12 2010-01-06 江阴市兰天彩印包装有限公司 Anti-counterfeiting transfer printing technology
CN101642977A (en) * 2009-09-03 2010-02-10 吴小华 Seamless laser molding press

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