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 to skip on the laser molding product when printing 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 be US2004/0256052A1 U.S. Patent Application Publication a kind of no-slot laser molding method, adopt 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, graph text information on the version roller is transferred on the basement membrane by roll extrusion with version roller and pressure roller, this transfer basement membrane can only be used disposable again.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 achieving the above object, 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, described shifting process comprises the steps:
First step coating is coated on the one side of A transfer basement membrane with coating machine equably with laser transfer coatings, 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, described version roller and pressure roller respectively have two, need be during mold pressing with described version roller and/or pressure roller heating, in described two version rollers, be provided with axial hot-zone and cold-zone at least one version roller, by cooperating of hot-zone between described two version rollers and cold-zone, laser graphic after the mold pressing on described two version rollers is transferred on the described A transfer basement membrane and can be reached seamless effect, when mold pressing the one side that scribbles laser transfer coatings on the described A transfer basement membrane is contacted with described 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 described clapper die spotting press, be provided with an involutory mould roller at least, the described mould roller that closes is heated, the A transfer basement membrane of surface with seamless laser graphic is embossed in it by an involutory mould roller then at least with the B basement membrane is overlapping;
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 described 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; described clapper die spotting press, cutting machine unreel with wrap-up on be respectively equipped with the electronics tracker and unreel synchronized, described electronics tracker with unreel synchronized and be used to control that described 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 described coating process, with in described unwinding device and the wrap-up unreel and the tension force of rolling is controlled between 8kg~12kg, the speed of service of described A transfer basement membrane is controlled between 90m/min~110m/min, the temperature of described oven dry is controlled between 80 °~130 °.
Among the present invention, in described mould pressing process, molding pressure between described version roller and the described pressure roller is controlled between 1.5kg~2.5kg, between one 158 °~162 ° of hot-zone heating and temperature control in described two version rollers, between 163 °~168 ° of the hot-zone heating and temperature control of another root.
In the present invention, in described moulding press, described two version rollers are arranged on a side that scribbles laser transfer coatings on the described A transfer basement membrane, and make between two version rollers and be spaced a distance.
Among the present invention, in described mould pressing process, the tension force that unreels in the described unwinding device is controlled between 8kg~10kg, the tension force of rolling in the wrap-up is controlled between 5kg~7kg, and the speed of service with described A transfer basement membrane when mold pressing is controlled between 30m/min~40m/min.
Among the present invention, be controlled between 5kg~7kg at the described tension force that unreels in the unwinding device with described A transfer basement membrane and B basement membrane in the membrane process that closes, the tension force of rolling in the wrap-up is controlled between 6kg~8kg, close with described that molding pressure is controlled between 1.5kg~2.5kg between the mould roller, when described mold pressing, the described mould roller that closes is heated between 120 °~140 °, the speed of service of described A transfer basement membrane and B basement membrane is controlled between 30m/min~40m/min.
Among the present invention, described A transfer basement membrane is: the PETG plastic foil, described B basement membrane is: the oriented polypropylene (OPP) plastic foil.
Among the present invention, the thickness of described A transfer basement membrane is 14 μ m~18 μ m, and the thickness of described B basement membrane is 22 μ m~28 μ m.
Advantage of the present invention and beneficial effect are: owing to adopted 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 schematic diagram 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 schematic diagram during seamless laser graphic shifts between the basement membrane of the present invention
Fig. 4 is that seamless laser graphic closes the membrane process schematic diagram in shifting between the basement membrane of the present invention;
Fig. 5 is a stripping technology schematic diagram 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 drawings and Examples, the specific embodiment of the present invention is further described.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.
As shown in Figure 1, the concrete technical scheme of implementing 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 equably with laser transfer coatings, is heated oven dry with drying plant 3 then, solidifies after the oven dry 24 hours again;
The second step mold pressing, with the version roller 5 on the A transfer basement membrane 2 usefulness moulding press 4 that are cured, 6 with pressure roller 7,8 carry out the pair roller mold pressing, described version roller and pressure roller respectively have two, need be during mold pressing with described version roller 5,6 and/or pressure roller 7,8 heating (using deep fat), in described two version rollers, be provided with axial hot-zone 6-1 and cold-zone 6-2 at least one version roller, by cooperating of hot-zone 6-1 between described two version rollers and cold-zone 6-2, described two version rollers 5 after the mold pressing, laser graphic on 6 is transferred on the described A transfer basement membrane 2 and can be reached seamless effect, the one side that scribbles laser transfer coatings on the described A transfer basement membrane need be contacted with described two version rollers when mold pressing;
(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 hot-zone with example edition roller 5 remedies the picture and text that first version roller do not shift part, 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 is because two version rollers 5,6 graph text information is identical, can repeatedly be shifted, 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 described 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 described, the A transfer basement membrane 2 of the surface being had a seamless laser graphic is embossed in it by an involutory mould roller 10,11 then at least with B basement membrane 12 is overlapping;
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 described 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 described clapper die spotting press 9, cutting machine 13 and wrap-up 15, be respectively equipped with electronics tracker 16 and unreel synchronized 17, described electronics tracker 16 with unreel synchronized 17 and be used to control the speed of service of described 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 described coating process, with in described unwinding device 14 and the wrap-up 15 unreel and the tension force of rolling is controlled between 8kg~12kg, the speed of service of described A transfer basement membrane 2 is controlled between 90m/min~110m/min, the temperature of described drying plant 3 is controlled between 80 °~130 °.
On the basis of the foregoing description, preferred embodiment of the present invention also comprises, in described mould pressing process, molding pressure between described version roller 5,6 and the described pressure roller 7,8 is controlled between 1.5kg~2.5kg, between one 158 °~162 ° of hot-zone heating and temperature control in described 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 described moulding press 4 described two version rollers 5,6 is arranged on a side that scribbles laser transfer coatings on the described A transfer basement membrane 2, and makes between two version rollers 5,6 and be spaced a distance.
On the basis of the foregoing description, preferred embodiment of the present invention also comprises, in described mould pressing process, the tension force that unreels in the described unwinding device 14 is controlled between 8kg~10kg, the tension force of rolling in the wrap-up 15 is controlled between 5kg~7kg, and the speed of service with described A transfer basement membrane 2 when mold pressing is controlled between 30m/min~40m/min.
On the basis of the foregoing description, preferred embodiment of the present invention also comprises, be controlled between 5kg~7kg at the described tension force that unreels in the unwinding device 14 with described A transfer basement membrane 2 and B basement membrane 12 in the membrane process that closes, the tension force of rolling in the wrap-up 15 is controlled between 6kg~8kg, with described a pair of matched moulds pressure roller 10, molding pressure is controlled between 1.5kg~2.5kg between 11, when described mold pressing, with the described mould roller 10 that closes, 11 are heated between 120 °~140 °, and the speed of service of described 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 described A transfer basement membrane 2 is: the PETG plastic foil, described 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 described A transfer basement membrane 2 is 14 μ m~18 μ m, and the thickness of described 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, described lithographic plate mold pressing nickel mother matrix faced by picture and text in butt joint be rolled into the cylindrical nickel mother matrix, and two butt end joint faces of described cylindrical nickel mother matrix are fixed with arc sheetmetal by adhesive in joint;
C, sealed with insulated enclosure material 10 centimetres of inner surfaces in two ends with interior length with described 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 described cylindrical nickel mother matrix inner surface to needs thickness, takes out it from electrotyping bath, then the electroformed layer of described nickel mother matrix and its inner surface peeled off that described 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 the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.