A kind of transfer method of holographic false proof pattern of applicable gravure positioning overprinting
Technical field
The present invention relates to a kind of transfer mold pressing and complex technique, be specifically related to a kind of transfer method of holographic false proof pattern of applicable gravure positioning overprinting.
Background technology
The transfer method of existing hologram pattern is that basement membrane is coated with, and by mould pressing method, hologram pattern is transferred in coating, then is aluminized, and finally hologram pattern is transferred on paper.Because hologram pattern is produced on laser plate, size of each laser plate is all fixed size, translates into after holographic papers and can only carry out offset printing again and realize positioning overprinting by being cut to same size.Along with the updating and promoting of printing technology, the meticulous site transition printing level that originally can only realize in offset printing can be good at embodying on gravure, so increasing printed matter starts to turn to gravure technique, has significantly promoted production efficiency.But the holographic transfer paper of producing at present will be applicable to gravure printing and can only adopt without joint stabilizing process, as adopt positioning holographic patterns, graph text information on pattern and gravure cylinder cannot carry out alignment, even if start alignment also can produce cumulative errors in process of production and produces deviation.Therefore, be necessary the shifting process of existing holographic false proof pattern to improve.
Summary of the invention
The transfer method that the object of the invention is to overcome the defect of prior art and a kind of holographic false proof pattern of applicable gravure positioning overprinting is provided, it prints the dimensional discrepancy between telltale mark on holographic telltale mark and paper on the relative position, transfer membrane of each location pattern of controls metastasis film effectively.
Realizing a kind of technical scheme of object of the present invention is: a kind of transfer method of holographic false proof pattern of applicable gravure positioning overprinting, comprises the following steps:
The first step: make a laser plate with location pattern, make the reach ± 0.01mm of precision of the location pattern on this laser plate, make a holographic telltale mark on the side of each location pattern;
Second step: adopting thickness is the PET basement membrane of 18 μ m, and is coated with the metastatic acrylic acid lacquer coating that one deck possesses moulding property on this basement membrane;
The 3rd step: adopt molding apparatus that the location pattern on described laser plate and holographic telltale mark are stamped in described epilamellar acrylic acid lacquer coating aspect, make positioning holographic film; Described molding apparatus is installed photoelectric sensor in holographic roller and mold pressing rubber roll place, with the other holographic telltale mark of each location pattern on detection and location holographic film;
The 4th step: the one side on described positioning holographic film with location pattern is vacuum aluminum-coated, makes this face form an aluminium lamination, makes positioning holographic transfer membrane;
The 5th step: described positioning holographic transfer membrane and paper are arranged on to one and possess detection and localization and stretch and adjust on the compounding machine of function, on this compounding machine, have three place's photoelectric sensors, be located at respectively that film unreels and film carry-over pinch rolls between, between paper upper inking roller and paper carry-over pinch rolls, roll between swift and carry-over pinch rolls; On described paper upper inking roller, be carved with described laser plate on holographic telltale mark print accordingly telltale mark;
The 6th step: paper and described positioning holographic transfer membrane is compound, described paper first passes through described paper upper inking roller, described printing telltale mark is printed on a surface of described paper, then by photoelectric sensor, the specifically labelled position of the printing on paper is detected, and detection signal is calculated to reflection on computers, if any extremely adjusting immediately paper, to unreel the speed of speed and described paper upper inking roller poor; Film unreels through deflector roll and gluing cable roll, make the transfer face last layer glue on described positioning holographic transfer membrane, by positioning holographic transfer membrane with have printing specifically labelled paper carry out compound, through described, roll positioning holographic transfer membrane and paper laminating after the rolling of swift, make positioning holographic paper;
The 7th step: described positioning holographic paper has two groups of photoelectric testing sensors before entering baking oven, these two groups of photoelectric sensors detect holographic telltale mark on holography shifting film and the printing telltale mark on paper correspondingly, and detection signal is transferred to computer, adjust on computers spacing between the two, finally make the printing telltale mark on holographic telltale mark and paper in the same horizontal line overlapping;
The 8th step: described positioning holographic paper is through oven for drying sizing, and this baking oven divides five joint independent temperatures, and temperature is controlled at 100~110 ℃;
The 9th step: the PET basement membrane in the positioning holographic paper after sizing is peeled off, and the coating that is loaded with the most at last positioning holographic patterns is stayed on paper.
The transfer method of the holographic false proof pattern of above-mentioned applicable gravure positioning overprinting, wherein, while carrying out the first step, is used large format justifying lithographic equipment justifying to make described laser plate.
The transfer method of the holographic false proof pattern of above-mentioned applicable gravure positioning overprinting, wherein, while carrying out the 3rd step, first by the standard value input computer of location dimension, again by holographic telltale mark corresponding to each location pattern on photoelectric detection system detection and location holographic film, and reduce draw the speed difference that becomes greatly or adjust holographic roller and mold pressing rubber roll that stretches on the positioning holographic film of deviations > ± 0.1mm.
The transfer method of the holographic false proof pattern of above-mentioned applicable gravure positioning overprinting, wherein, while carrying out the 6th step, speed is 60~70 ms/min; The scraper being arranged by described gluing cable roll one side is controlled spread, makes the THICKNESS CONTROL of glue layer at 4~5 μ m; The described pressure that rolls swift is controlled at 5 ± 0.5kg.
The transfer method of the holographic false proof pattern of above-mentioned applicable gravure positioning overprinting, wherein, described laser plate is with specifically labelled positioning holographic laser nickel version; Described glue is polyurethane glue; Described paper is 175 grams of Hongta art post paperboards.
The transfer method of the holographic false proof pattern of applicable gravure positioning overprinting of the present invention, it is the relative position of each location pattern of controls metastasis film effectively, on transfer membrane, on holographic telltale mark and paper, print the dimensional discrepancy between telltale mark, therefore can realize the production of the holographic location of reel transfer paper, simultaneously by supporting mold pressing location adjusting process, compound location stretching adjusting process, typographic(al) mark positioning process, telltale mark contraposition alignment technique, the automatic detection and location mark of many group standalone sensors, automatically detect manually and adjust, servo-drive multistage stand alone type automatic tension control device, line such as peels off at technique and the device, broken through the bottleneck of print nest lettering bit patterns on gravure equipment, can improve gravure production efficiency, reduce production costs, economize on resources, improving product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the laser plate made of the first step in the transfer method of holographic false proof pattern of applicable gravure positioning overprinting of the present invention;
Fig. 2 carries out the exploded view of second step to the six steps in the transfer method of holographic false proof pattern of applicable gravure positioning overprinting of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The transfer method of the holographic false proof pattern of applicable gravure positioning overprinting of the present invention, comprises the following steps:
The first step: adopt large format justifying lithographic equipment justifying to make a laser plate A (seeing Fig. 1) with location pattern B, the size of location pattern B is arranged layout design according to gravure printing, reach ± the 0.01mm of precision of this location pattern B, makes a holographic telltale mark C on the side of each location pattern B;
Second step: adopting thickness is the PET basement membrane of 18 μ m, and is coated with the metastatic acrylic acid lacquer coating that one deck possesses moulding property on this basement membrane;
The 3rd step: adopt molding apparatus that the location pattern B on laser plate A and holographic telltale mark C are stamped in epilamellar acrylic acid lacquer coating aspect, make positioning holographic film; Molding apparatus is installed photoelectric sensor in holographic roller and mold pressing rubber roll place, with the other holographic telltale mark 2 of each positioning holographic patterns on detection and location holographic film; In the process of impression, first by the standard value input computer of location dimension, then by holographic telltale mark 2 corresponding to upper each location pattern on photoelectric detection system detection and location holographic film; As find that there is the abnormal equipment of size and automatically adjust tension force and film is carried out to the speed difference that stretching and drawing becomes large or adjust holographic roller and mold pressing rubber roll reduce, and detect again adjustment result by the photoelectric sensor of rolling place; The certification mark result data that all location pattern is corresponding will gather and print, and makes positioning precision deviation < ± 0.1mm;
The 4th step: the one side on positioning holographic film with location pattern is vacuum aluminum-coated, makes this face form an aluminium lamination 3, makes positioning holographic transfer membrane;
The 5th step: positioning holographic transfer membrane and paper are arranged on to one and possess detection and localization and stretch and adjust on the compounding machine of function, paper is 175 grams of Hongta art post paperboards; On this compounding machine, have three place's photoelectric sensors, be located at respectively that film unreels and film carry-over pinch rolls between, between paper upper inking roller and paper carry-over pinch rolls, roll between swift and carry-over pinch rolls; On paper upper inking roller, be carved with laser plate on holographic telltale mark print accordingly telltale mark;
The 6th step: paper 6 and positioning holographic transfer membrane is compound, paper 6 first passes through paper upper inking roller, making to print telltale mark is printed on a surface of paper 6, then by photoelectric sensor, the position of the printing telltale mark 5 on paper 6 is detected, and detection signal is calculated to reflection on computers, if any extremely adjusting immediately paper, to unreel the speed of speed and paper upper inking roller poor; Simultaneously, film unreels through deflector roll and gluing cable roll, make last layer polyurethane glue 4 on the transfer face of positioning holographic transfer membrane, the scraper being arranged by gluing cable roll one side is controlled spread, make the THICKNESS CONTROL of glue layer 4 at 4~5 μ m, positioning holographic transfer membrane and the paper 6 with printing telltale mark 5 are carried out compound, after rolling the rolling of swift, positioning holographic transfer membrane is fitted with paper 6, makes positioning holographic paper (seeing Fig. 2); The pressure that rolls swift is controlled at 5 ± 0.5kg; The compound speed of whole positioning holographic paper should be controlled at 60~70 ms/min, to guarantee the timely and accurate of positioning precision and information feedback;
The 7th step: positioning holographic paper has two groups of photoelectric testing sensors before entering baking oven, these two groups of photoelectric sensors detect the printing telltale mark 5 on holographic telltale mark on holography shifting film 2 and paper 6 correspondingly, and detection signal is transferred to computer by control circuit, and by adjusting on computers spacing between the two, finally make holographic telltale mark 2 in the same horizontal line overlapping with the printing telltale mark 5 on paper 6; Control circuit locks data behind the location dimension position by the printing telltale mark 5 on holographic telltale mark 2 and paper under computer record; As occurred, because tension force is unstable, cause in process of production holographic telltale mark and printing telltale mark 5 contraposition deviations, photoelectric sensor is transferred to signal on computer by control circuit immediately, two overlapping marks on computer there will be deviation, at this moment the tension force that just independently adjustment film unreels and the tension force of film carry-over pinch rolls, stretch or speed governing is poor shortens, with this, make two groups of telltale marks again reach overlapping; The tractive force of film carry-over pinch rolls is 3 ± 0.5kg;
The 8th step: positioning holographic paper is through oven for drying sizing, and this baking oven divides five joint independent temperatures, and temperature is controlled at 100~110 ℃;
The 9th step: the PET basement membrane in the positioning holographic paper after sizing is peeled off, and the coating that is loaded with the most at last positioning holographic patterns is stayed on paper 6.
The transfer method of the holographic false proof pattern of applicable gravure positioning overprinting of the present invention, it is the relative position of each location pattern of controls metastasis film effectively, on transfer membrane, on holographic telltale mark and paper, print the dimensional discrepancy between telltale mark, therefore can realize the production of the holographic location of reel transfer paper, simultaneously by supporting mold pressing location adjusting process, compound location stretching adjusting process, typographic(al) mark positioning process, telltale mark contraposition alignment technique, the automatic detection and location mark of many group standalone sensors, automatically detect manually and adjust, servo-drive multistage stand alone type automatic tension control device, line such as peels off at technique and the device, broken through the bottleneck of print nest lettering bit patterns on gravure equipment, can improve gravure production efficiency, reduce production costs, economize on resources, improving product quality.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.