CN103507393B - A kind of holographic BOPP embosses seamless roller and preparation method thereof - Google Patents
A kind of holographic BOPP embosses seamless roller and preparation method thereof Download PDFInfo
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- CN103507393B CN103507393B CN201310446249.0A CN201310446249A CN103507393B CN 103507393 B CN103507393 B CN 103507393B CN 201310446249 A CN201310446249 A CN 201310446249A CN 103507393 B CN103507393 B CN 103507393B
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Abstract
The present invention relates to seamless molded roller and preparation method thereof technical field, specifically a kind of holographic BOPP embosses seamless roller and preparation method thereof, wherein, holographic BOPP embosses seamless roller and includes roller core, and the priming coat that is coated with successively of the outer from-inner-to-outer of roller core and UV ink layer, this holography BOPP embosses the preparation method of seamless roller and comprises the following steps: 1) the BOPP thin film that conventionally technique making has version to stitch; 2) roller core of the seamless roller of BOPP is made; 3) on roller core, it is coated with one layer of primary coat by specific inking solidification equipment, adopts hot blast or Infrared Heating to solidify; 4) on roller core, it is coated with one layer of UV ink by specific inking solidification equipment, adopts the holographic laser roller that particular process fabrication is seamless; The present invention is compared with the existing technology, be difficult to differentiate the seamless roller of version seam by special process producer's naked eyes, roller that this is seamless can be directly used for production BOPP seamless holographic films on common soft press, reduces follow-up multiple paper technological requirement, be conducive to energy-saving consumption-reducing, improve production efficiency.
Description
[technical field]
The present invention relates to seamless molded roller and preparation method thereof technical field, specifically a kind of holographic BOPP embosses seamless roller and preparation method thereof.
[background technology]
Holographic BOPP mold pressing is commonly called as soft pressure, by the pre-hot-rolling of soft press by film heating to uniform temperature, then carries out pressing with the roller posting hologram pattern nickel version, cools down simultaneously, and namely the pattern in nickel version is transferred on BOPP thin film, forms BOPP holographic film. By such thin film and paper compound, each based packaging material can be made, simultaneously work as attractive in appearance and false proof function.
At present, the Normal practice of BOPP holographic laser film, it is by the sheet metallic nickel version after cutting, wraps and be affixed on soft press roller surface. Which inevitably forms straight line stencilling seam at joint, when craftsmanship's level of relative is higher, and this edition seam width about 0.2～0.3mm. For the resolution 0.1mm of naked eyes, this edition seam is clearly easily distinguished, follow-up multiple paper technique is added jumping seam requirement, and technology difficulty is high, is unfavorable for intensive, high efficiency production.
Chinese utility model patent " holographic pressing device without plate gap " (patent No.: 200520064521.x) provides the manufacture method of a kind of cylindrical seamless molded plate. Nickel version being rolled into barreled inwardly, carries out reprint as mother matrix, electroforming goes out seamless cylindrical shape holography nickel version. Although the cylindrical nickel version that this patent provides is seamless, but remain without the piece problem of hologram pattern in nickel version that solves.
Chinese invention patent " a kind of seamless moulding press of BOPP " (patent No.: 201010197975.x) provides the making of the seamless molded product of a kind of BOPP in its summary of the invention, its method is for first producing a seamless PET film of volume, replace metallic nickel version by PET film, pattern is copied on BOPP thin film.The method there is also certain limitation, show themselves in that 1) the double; two compression technology making of PET film employing, it is easy to existing and laminate dark space, this is the difficult problem that PET holographic seamless film makes field, and the flaw in PET film can all copy in BOPP film. 2) length of PET film with BOPP film coupling, if length differs or disconnected film phenomenon occurs in production process, then must can introduce new joint because connecing film. 3) PET film molding compound is generally thermoplastic resin, and under bigger pressure, its diffraction efficiency of grating can weaken gradually, and transfer number is limited, it is easy to cause batch BOPP holographic film diffraction efficiency inconsistent.
Chinese invention patent " seamless laser molding press " (patent No.: 200910102010.9) provides a kind of seamless laser mould pressing technology, similar with PET seamless laser film principle, namely perform twice at and preheat and twice mold pressing, pre-hot-rolling that secondary laminates or roller form by heating and cool down two regions, carry out the mode that secondary laminates eliminate version seam by the version that one-step mould is formed is sewn on heating region. Which is high especially to equipment precision requirement, and the concordance of diffraction efficiency of grating is also still to be tested.
The plate roller without plate seam mentioned in Chinese utility model patent " plate roller without plate seam " (patent No.: 201120297659.X) is also by being provided with a roller with heating and two regions of cooling, having the effect played the same tune on different musical instruments with 200910102010.9.
[summary of the invention]
Present invention aim to solve above-mentioned deficiency and provide a kind of holographic BOPP to emboss seamless roller and preparation method thereof, it is difficult to differentiate the seamless roller of version seam by special process producer's naked eyes, can be directly used for production BOPP seamless holographic films on common soft press, reduce follow-up multiple paper technological requirement, be conducive to energy-saving consumption-reducing, improve production efficiency.
A kind of holographic BOPP of design embosses seamless roller for achieving the above object, and including roller core, the outer from-inner-to-outer of described roller core is sequentially coated with priming coat and UV ink layer.
Described roller core is iron roll or copper facing iron roll, and described roller core surface smoothness is 5.0-7.0.
Described priming coat is epoxy coating or isocyanates coating, and the thickness of described priming coat is 0.1-50 μm.
Described UV ink layer is photocuring laser molding layer, and the thickness of described UV ink layer is 3-10 μm, and the surface pencil hardness of described UV ink layer is 3H-5H.
The preparation method that a kind of holographic BOPP embosses seamless roller, comprises the following steps:
1) conventional press moulding mode is adopted to produce the BOPP thin film of version seam;
2) make a BOPP and emboss the roller core of seamless roller;
3) roller core is arranged on inking solidification equipment, on roller core, is coated with one layer of primary coat by inking solidification equipment, obtain priming coat, adopt hot blast or Infrared Heating to solidify;
4) on priming coat, one layer of UV ink it is coated with by inking solidification equipment, obtain UV ink layer, with UV ink for carrier, to have BOPP thin film that version stitches for mother matrix, holographic laser pattern on BOPP thin film is transferred to UV ink layer surface, and make the version seam on BOPP thin film will not be transferred to UV ink layer surface, thus prepare holographic BOPP to emboss seamless roller.
Step 2) in, the material of described roller core is iron roll or copper facing iron roll, and described roller core surface smoothness is 5.0-7.0, and the roller footpath of described roller core is uniform.
In step 3), described priming coat is epoxy coating or isocyanates coating, and the thickness of described priming coat is 0.1-50 μm.
In step 4), the thickness of described UV ink layer is 3-10 μm, and the surface pencil hardness of described UV ink layer is 3H-5H.
Described inking solidification equipment includes inking device, solidification equipment, wrap-up and unwinding device, described solidification equipment is between wrap-up and unwinding device, described inking device is connected with solidification equipment, described inking device includes upper inking roller and soft roller, described upper inking roller, soft roller, roller core are sequentially connected with, described upper inking roller is packaged type upper inking roller, between described roller core and unwinding device, pressure roller is installed, described roller core is connected with pressure roller, is provided with aluminum deflector roll between described unwinding device and pressure roller and between wrap-up and roller core.
In step 4), UV ink reaches soft roller from the upper inking roller of inking device, then reaches the priming coat of roller core from soft roller, after being uniformly coated with UV ink on the priming coat of roller core, is removed by inking device, is rotated further roller core, make UV ink solidification; Simultaneously by have version to stitch BOPP thin film from unwinding device through aluminum deflector roll and pressure roller, with the roller core laminating being coated with UV ink under pressure roller pressing, holographic laser pattern on BOPP thin film is transferred to UV ink layer surface, and the version seam ensured on BOPP thin film will not be transferred, after being solidified by ultraviolet lighting, BOPP thin film is peeled off with roller core, then through aluminum deflector roll and wrap-up rolling; After the transfer completely of holographic laser pattern, disengage BOPP thin film, roller core is rotated further under ultraviolet lighting, makes UV ink fully solidify, obtain holographic BOPP and emboss seamless roller.
The present invention is compared with the existing technology, have the advantage that the holographic BOPP adopting method of the present invention to make embosses seamless roller, version seam≤the 0.05mm of its holographic laser pattern joint, and in irregular waveform (as shown in Figure 3), being compared to version seam (as shown in Figure 4) of the BOPP holographic laser film >=0.2mm of routine, this irregular waveform version is stitched almost naked eyes and is difficult to; In addition, adopt holographic BOPP of the present invention to emboss seamless roller and make BOPP holographic laser film, not only reduce follow-up multiple paper technological requirement, and the making comparing other the seamless BOPP thin film on market embosses through 2 times, the seamless roller of the present invention has only to one-step mould just can form seamless product, be conducive to energy-saving consumption-reducing, improve production efficiency, be worthy of popularization.
[accompanying drawing explanation]
The structural representation of seamless roller in Fig. 1 present invention;
Fig. 2 is the structural representation of inking solidification equipment in the present invention;
Fig. 3 is the BOPP holographic laser film schematic appearance adopting the seamless roller of the present invention to make;
Fig. 4 is the BOPP holographic laser film schematic appearance of conventional plate seam >=0.2mm;
In figure: 1, wrap-up 2, uv curing machine 3, unwinding device 4, curing area wallboard 5, aluminum deflector roll 6, roller core 7, pressure roller 8, soft roller 9, upper ink-covered area wallboard 10, upper inking roller 11, ink fountain and lowering or hoisting gear 12, inking region driving and reversing mechanism 13, patch version version seam 14, pattern 15, thin film 16, the seamless roller version seam 17 observed under magnifier, priming coat 18, UV ink layer.
[detailed description of the invention]
The present invention is made further explained below below in conjunction with accompanying drawing:
As shown in Figure 1, in the present invention, the seamless roller of holographic BOPP mold pressing includes roller core 6, and the outer from-inner-to-outer of roller core is sequentially coated with priming coat 17 and UV ink layer 18; Wherein, roller core is iron roll or copper facing iron roll, as the supporting layer of seamless roller, it is desirable to the roller footpath of roller core is uniform, and roller core surface smoothness is 5.0-7.0, and roller core girth is determined according to the single justifying distance of laser holographic pattern (being called for short version week);Priming coat is epoxy coating or isocyanates coating, in order to strengthen the adhesion of roller core and UV ink layer, and preferred epoxy coating of the present invention, the thickness of priming coat is 0.1-50 μm; UV ink layer is photocuring laser molding layer, this photocuring laser molding layer refers to and passes through ultraviolet curing process, with light-curable ink for carrier, holographic laser pattern is transferred to light solidifying coating surface, replace metallic nickel version as embossed holographic working version, the thickness of described UV ink layer is 3-10 μm, and the surface pencil hardness of UV ink layer is 3H-5H.
The preparation method that holographic BOPP of the present invention embosses seamless roller, comprises the following steps:
1) adopt conventional press moulding mode to produce the BOPP thin film of version seam, in its edition week 20%-30% bigger than the version week of the BOPP of the required making seamless roller of mold pressing, version is stitched size without strict demand by this step;
2) making a BOPP and emboss the roller core of seamless roller, the material of roller core can be selected for iron roll or copper facing iron roll, and roller core surface smoothness is 5.0-7.0, and the roller footpath of roller core is uniform, the BOPP seamless laser thin film version Zhou Xiangtong of its edition week and required making;
3) roller core is arranged on inking solidification equipment, is coated with on roller core by inking solidification equipment
4) on priming coat, one layer of UV ink it is coated with by inking solidification equipment, obtain UV ink layer, the thickness of UV ink layer is 3-10 μm, the surface pencil hardness of UV ink layer is 3H-5H, with UV ink for carrier, to have BOPP thin film that version stitches for mother matrix, the holographic laser pattern on BOPP thin film is transferred to UV ink layer surface, and make the version seam on BOPP thin film will not be transferred to UV ink layer surface, thus prepare holographic BOPP to emboss seamless roller.
As shown in Figure 2, schematic diagram for inking solidification equipment described in step 3) and step 4), this inking solidification equipment includes inking device, solidification equipment, wrap-up 1 and unwinding device 3, solidification equipment is between wrap-up and unwinding device, inking device is connected with solidification equipment, solidification equipment is mainly made up of uv curing machine 2 and curing area wallboard 4, uv curing machine is arranged on roller core place, inking device is mainly made up of upper inking roller 10 and soft roller 8, also include ink-covered area wallboard 9, ink fountain and lowering or hoisting gear 11 and inking region driving and reversing mechanism 12, wherein, upper inking roller, soft roller, roller core 6 is sequentially connected with, upper inking roller is arranged on ink fountain and lowering or hoisting gear, ink fountain and lowering or hoisting gear are positioned at inking region driving and reversing mechanism, thus upper inking roller is packaged type upper inking roller, pressure roller 7 is installed between roller core and unwinding device, roller core is connected with pressure roller, aluminum deflector roll 5 it is provided with between unwinding device and pressure roller and between wrap-up and roller core, ink reaches soft roller from upper inking roller, then reaches roller from soft version rod, and this inking device ensures that inking is uniform, ink amount is controlled, after roller core is uniformly coated with primary coat ink and UV ink successively, inking device is removed the solidification carrying out roller core ink.
In step 4), UV ink reaches soft roller from the upper inking roller of inking device, then reaches the priming coat of roller core from soft roller, after being uniformly coated with UV ink on the priming coat of roller core, is removed by inking device, is rotated further roller core, make UV ink solidification; Simultaneously by have version to stitch BOPP thin film from unwinding device through aluminum deflector roll and pressure roller, with the roller core laminating being coated with UV ink under pressure roller pressing, holographic laser pattern on BOPP thin film is transferred to UV ink layer surface, and the version seam ensured on BOPP thin film will not be transferred, after being solidified by ultraviolet lighting, BOPP thin film is peeled off with roller core, then through aluminum deflector roll and wrap-up rolling;After the transfer completely of holographic laser pattern, disengage BOPP thin film, roller core is rotated further under ultraviolet lighting, makes UV ink fully solidify, obtain holographic BOPP and emboss seamless roller.
This step 4) is the BOPP thin film there to be version to stitch is mother matrix, is transferred on roller core by holographic laser pattern when anaerobic solidifies, thus obtaining seamless holographic laser pattern. Specifically, be by BOPP thin film from unwinding device through aluminum deflector roll and pressure roller, with the roller core laminating being coated with UV ink under pressure roller effect, with roller core stripping after solidifying by ultraviolet lighting under certain speed, then through aluminum deflector roll and wrap-up rolling. After roller core is uniformly coated with UV ink, backing out inking device, roller core continues to rotate, a small amount of UV ink deadweight and layer tension combined effect power under on roller core formation rule or irregular wave shape wave, thus forming corrugated version seam on roller core, intersection line thickness is about 0.05mm. It is rotated further the distance 120-130% to version week, makes UV ink all solidify, but the version seam on BOPP thin film will not be transferred on roller core. After pattern transfer is complete, disengage BOPP thin film, by roller core uniform rotation 3-4 circle under uviol lamp, make ink fully solidify, obtain naked eyes and be difficult to differentiate the holographic BOPP seamless roller of mold pressing of version seam.
As shown in Figure 3, for the BOPP holographic laser film schematic appearance adopting the seamless roller of the present invention to make, the seamless roller version observed under pattern 14, thin film 15 and magnifier as seen from the figure seam 16, this edition seam is the waveform of width≤0.05mm;
As shown in Figure 4, BOPP holographic laser film schematic appearance for conventional plate seam >=0.2mm, preparation method of the present invention there is the BOPP thin film that version is stitched similar described in step 1), as seen from the figure pattern 14, thin film 15 and patch version version seam 13, this version seam width >=0.2mm.
The present invention is made further explained below below in conjunction with specific embodiment:
Determine holographic laser pattern, as shown in Figure 3 a pattern as required, make the nickel version of this Thinfilm pattern be a cycle period with 8 patterns nickel version, cycle period length (i.e. version week) is 560mm. first, make, by organizing version, the metallic nickel version that version week is 640mm, adopt conventional press moulding mode to produce the BOPP thin film of version seam, as shown in Figure 4. then, make the iron roll core that version week is 560mm, it is arranged on inking device, by inking device last layer epoxy primary coat ink, host and firming agent proportioning are 4:1, and uniform rotation roller core, by hand-held infrared heater to its heating, drying, the kind of calliper roller footpath adopting precision to be 1 μm, obtains coating layer thickness and is 30-35 μm. the BOPP thin film that version is stitched that has in version week 640mm is worn film by shown in Fig. 2, and carry out labelling at the version seam place of BOPP thin film, UV ink is passed sequentially through upper inking roller, soft roller passes on roller core, simultaneously by pressure roller pressing, make BOPP thin film mold pressing surface and roller core laminating, open uviol lamp to solidify, after on roller core, UV ink is uniformly coated with, back out inking device, it is rotated further roller core, stitch when mark is about to enter pressure roller in version and disengage pressure roller, now BOPP thin film separates with roller core, persistently rotate roller core 3-4 circle again, close uviol lamp, obtain the seamless roller of holographic BOPP as shown in Figure 1, its UV ink pellet surface pencil hardness is 4H. this seamless roller is mounted on conventional soft pressure equipment, conventionally technique embosses, can obtaining seamless BOPP holographic laser thin film as shown in Figure 3, roller that this is seamless continuous mould pressing BOPP film length can be about 50000-60000 rice, little with nickel version life-span difference.
The present invention by the change made under the restriction of above-mentioned embodiment, other any spirit without departing from the present invention and principle, modification, replacement, combination, simplification, all not should be the substitute mode of equivalence, is included within protection scope of the present invention.
Claims (5)
1. the preparation method that a holographic BOPP embosses seamless roller, it is characterised in that comprise the following steps,
1) conventional press moulding mode is adopted to produce the BOPP thin film of version seam;
2) make a BOPP and emboss the roller core of seamless roller;
3) roller core is arranged on inking solidification equipment, on roller core, one layer of primary coat it is coated with by inking solidification equipment, obtain priming coat, hot blast or Infrared Heating is adopted to solidify, described inking solidification equipment includes inking device, solidification equipment, wrap-up and unwinding device, described solidification equipment is between wrap-up and unwinding device, described inking device is connected with solidification equipment, described inking device includes upper inking roller and soft roller, described upper inking roller, soft roller, roller core is sequentially connected with, described upper inking roller is packaged type upper inking roller, between described roller core and unwinding device, pressure roller is installed, described roller core is connected with pressure roller, aluminum deflector roll it is provided with between described unwinding device and pressure roller and between wrap-up and roller core,
4) on priming coat, one layer of UV ink it is coated with by inking solidification equipment, obtain UV ink layer, with UV ink for carrier, to have BOPP thin film that version stitches for mother matrix, holographic laser pattern on BOPP thin film is transferred to UV ink layer surface, and make the version seam on BOPP thin film will not be transferred to UV ink layer surface, thus prepare holographic BOPP to emboss seamless roller.
2. preparation method as claimed in claim 1, it is characterised in that: step 2) in, the material of described roller core is iron roll or copper facing iron roll, and described roller core surface smoothness is 5.0-7.0, and the roller footpath of described roller core is uniform.
3. preparation method as claimed in claim 1 or 2, it is characterised in that: step 3) in, described priming coat is epoxy coating or isocyanates coating, and the thickness of described priming coat is 0.1-50 μm.
4. preparation method as claimed in claim 3, it is characterised in that: step 4) in, the thickness of described UV ink layer is 3-10 μm, and the surface pencil hardness of described UV ink layer is 3H-5H.
5. preparation method as claimed in claim 4, it is characterized in that: step 4) in, UV ink reaches soft roller from the upper inking roller of inking device, reach the priming coat of roller core from soft roller again, after the priming coat of roller core is uniformly coated with UV ink, inking device is removed, is rotated further roller core, make UV ink solidification; Simultaneously by have version to stitch BOPP thin film from unwinding device through aluminum deflector roll and pressure roller, with the roller core laminating being coated with UV ink under pressure roller pressing, holographic laser pattern on BOPP thin film is transferred to UV ink layer surface, and the version seam ensured on BOPP thin film will not be transferred, after being solidified by ultraviolet lighting, BOPP thin film is peeled off with roller core, then through aluminum deflector roll and wrap-up rolling; After the transfer completely of holographic laser pattern, disengage BOPP thin film, roller core is rotated further under ultraviolet lighting, makes UV ink fully solidify, obtain holographic BOPP and emboss seamless roller.
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| CN104827688A (en) * | 2015-05-03 | 2015-08-12 | 佛山市崇源机械有限公司 | Process and apparatus for surface-hardening treatment of PC board coil |
| CN105774192B (en) * | 2016-04-29 | 2019-06-25 | 珠海市瑞明科技有限公司 | A kind of manufacturing system and method for seamless forging printing plate roller |
| CN110760896A (en) * | 2018-07-26 | 2020-02-07 | 苏州苏大维格科技集团股份有限公司 | Crease-resistant electroforming process for working plate |
| CN109454974A (en) * | 2018-11-20 | 2019-03-12 | 珠海市瑞明科技有限公司 | A kind of method for platemaking being molded version |
| CN109367196A (en) * | 2018-11-30 | 2019-02-22 | 中丰田光电科技(珠海)有限公司 | A kind of preparation method and equipment of holographic anti-counterfeiting film mother matrix |
| CN112874127B (en) * | 2021-01-08 | 2021-10-01 | 黄山精工凹印制版有限公司 | Process method for preparing seamless laser mould pressing roller |
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