CN114434997A - Nickel-free wide-width film pressing film and processing technology thereof - Google Patents
Nickel-free wide-width film pressing film and processing technology thereof Download PDFInfo
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- CN114434997A CN114434997A CN202210092860.7A CN202210092860A CN114434997A CN 114434997 A CN114434997 A CN 114434997A CN 202210092860 A CN202210092860 A CN 202210092860A CN 114434997 A CN114434997 A CN 114434997A
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- 238000003825 pressing Methods 0.000 title claims abstract description 169
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 title claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 104
- CMLFRMDBDNHMRA-UHFFFAOYSA-N 2h-1,2-benzoxazine Chemical compound C1=CC=C2C=CNOC2=C1 CMLFRMDBDNHMRA-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 52
- 239000011347 resin Substances 0.000 claims abstract description 43
- 229920005989 resin Polymers 0.000 claims abstract description 43
- 238000003851 corona treatment Methods 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 14
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 13
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 13
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 claims description 64
- 238000005520 cutting process Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 22
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 19
- 229910052804 chromium Inorganic materials 0.000 claims description 19
- 239000011651 chromium Substances 0.000 claims description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 13
- 238000005269 aluminizing Methods 0.000 claims description 10
- 238000001704 evaporation Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 10
- 238000001771 vacuum deposition Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 9
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 6
- DWSWCPPGLRSPIT-UHFFFAOYSA-N benzo[c][2,1]benzoxaphosphinin-6-ium 6-oxide Chemical compound C1=CC=C2[P+](=O)OC3=CC=CC=C3C2=C1 DWSWCPPGLRSPIT-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 75
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 75
- 239000010410 layer Substances 0.000 abstract description 58
- 230000003287 optical effect Effects 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 9
- 238000007747 plating Methods 0.000 abstract description 8
- 238000007639 printing Methods 0.000 abstract description 4
- -1 polyethylene terephthalate Polymers 0.000 abstract description 3
- 230000003746 surface roughness Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000011229 interlayer Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000178 monomer Substances 0.000 description 4
- 238000007648 laser printing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- BCHZICNRHXRCHY-UHFFFAOYSA-N 2h-oxazine Chemical group N1OC=CC=C1 BCHZICNRHXRCHY-UHFFFAOYSA-N 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/0041—Digital printing on surfaces other than ordinary paper
- B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/24—Vacuum evaporation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a nickel-free wide-width film pressing film and a processing technology thereof; the method utilizes a traditional nickel plate for printing as a mother plate, uses a PET (polyethylene terephthalate) base film and thermosetting acrylic resin as matrixes, and copies holographic light pattern information on the nickel plate on a film-pressing mother plate after mould pressing, and carries out vacuum metal layer plating and polybenzoxazine resin layer preparation on the holographic light pattern information to enhance the strength and reduce the surface energy of the holographic light pattern information and reduce the adhesive force; then preparing a wide-width film pressing belt, reprinting the holographic optical pattern information on the film pressing mother board on the wide-width film pressing belt again to make the holographic optical pattern information identical to that of the nickel plate, thereby achieving the purpose that the printed pattern on the paper is consistent with that of the nickel plate, and simultaneously, in order to further enhance the interlayer bonding capability of the wide-width film pressing belt, the invention also carries out corona treatment on the benzoxazine resin layer to enhance the surface roughness thereof, so that the service life of the wide-width film pressing belt is prolonged.
Description
Technical Field
The invention relates to the technical field of printing anti-counterfeiting, in particular to a nickel-free wide-width film pressing film and a processing technology thereof.
Background
In recent years, with the further development of the solid economy of China, the use amount of packaging paper of various products is greatly improved, especially, special packages prepared by various laser printing are popular with consumers, but the preparation process of a laser transfer film is complex, the preparation cost is high, a nickel plate of the laser transfer film can be printed about ten thousand times, the laser transfer film cannot be used continuously, the cost is high, nickel which is one of preparation raw materials can cause damage to the environment and cause heavy metal pollution, and therefore a novel processing technology capable of reducing the cost and reducing the damage to the environment in the use process is urgently needed for the market.
Disclosure of Invention
The invention aims to provide a nickel-free wide-width film pressing film and a processing technology thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme:
a processing technology of a nickel-free wide film pressing film comprises the following steps:
s1, preparing a nickel plate mother board according to required holographic light pattern information;
s2, cutting the PET base film to enable the width of the PET base film to be the same as that of the nickel plate mother board, coating thermosetting acrylic resin on the PET base film, installing the nickel plate mother board on a mould press, heating to 80-100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating to prepare a metal adhesion layer, spraying a benzoxazine solution on the surface of the metal adhesion layer, placing the metal adhesion layer into a drying box, drying at the temperature of 120-140 ℃ for 3-5min, and taking out to prepare a benzoxazine anti-adhesion layer to obtain a film-pressing master plate;
s4, opening a roller machine, installing a film pressing mother board and a wide film pressing belt on the roller machine, preheating the film pressing mother board and the wide film pressing belt during working, preparing holographic light pattern information on the surface of the wide film pressing belt in a mode that working rollers mutually press against each other, and carrying out corona treatment on the holographic light pattern information by using a corona treatment device;
the preparation method of the wide-width film laminating belt comprises the following steps: cutting the PET base film, and coating benzoxazine resin on the PET base film to obtain a wide film pressing belt;
the thickness of the PET base film is 100-130 microns, and the thickness of the benzoxazine resin is 30-50 microns.
And S5, carrying out vacuum aluminizing on the wide-width film pressing belt to obtain the nickel-free wide-width film pressing belt.
Further, in the step S1, the thickness of the nickel plate mother plate is 120-150 μm.
Further, in the step S2, the thickness of the PET-based film is 100-130 μm.
Furthermore, the thickness of the metal attachment layer is 0.3-2nm, and the metal of the metal attachment layer is any one or more of titanium, chromium and nickel.
Furthermore, the thickness of the metal attachment layer is 0.3-2nm, and the metal of the metal attachment layer is evaporated and plated by any one or more of titanium nitride, chromium and nickel.
Further, in the step S3, the benzoxazine solution is a mixed solution of 15% to 30% benzoxazine resin and 70% to 85% acetone; the thickness of the benzoxazine anti-sticking layer is 0.1-0.5 nm.
Further, the benzoxazine is any one or more of bisphenol A type benzoxazine, bisphenol F type benzoxazine, MDA type benzoxazine, phenolphthalein type benzoxazine and DOPO type benzoxazine.
The polybenzoxazine is a thermosetting resin, the thermosetting temperature is about 160-180 ℃, the internal structure of the polybenzoxazine contains a hexabasic oxazine ring formed by oxygen atoms and nitrogen atoms, the structural performance is stable, in the heating and curing process, a polybenzoxazine monomer is subjected to ring opening to form phenolic hydroxyl, and monomer intermolecular crosslinking forms a three-dimensional grid structure so as to be cured, compared with the conventional thermosetting resin, the polybenzoxazine resin does not release small monomer molecules in the curing process and cannot hinder molecular chain crosslinking of the polybenzoxazine resin, so that in a curing system, the molecular arrangement is good, the internal porosity is low, the water absorption is small, and due to the structural composition of the polybenzoxazine resin, the curing shrinkage rate of the polybenzoxazine resin is extremely small and is only 0.9-1.5% in the curing process, and the polybenzoxazine resin has good thermal deformation resistance.
And the polarity of phenolic hydroxyl groups generated after ring-opening polymerization of the polybenzoxazine monomer is relatively large, so that nitrogen atoms in the hexabasic oxazine ring can generate intramolecular hydrogen bonds easily, the electrical action of polybenzoxazine molecules is weakened, the surface free energy of the polybenzoxazine molecules is reduced, the surface adhesion force of the polybenzoxazine molecules is reduced, and the polybenzoxazine has anti-adhesion property.
The holographic optical grain information of the film pressing mother board prepared by the invention is stored in the grain structure formed on the surface of the polypropylene resin after mould pressing, but the holographic optical grain information stored on the film pressing mother board can not be directly used at the moment, and the holographic optical grain information is transferred to a wide film pressing film to be used after secondary extrusion, and the holographic optical grain information stored on the wide film pressing film is consistent with that of a nickel plate at the moment. However, after two times of film-pressing, the surface shape of the film is easy to deform due to repeated stripping in the film-pressing process, so that holographic optical pattern information on the surface of the wide-width film pressing film is damaged, and the laser brightness of the wide-width film pressing film is smaller than that of a film pressing mother board. In order to reduce the information loss in the process of rolling, the polybenzoxazine resin is used as the resin matrix of the anti-sticking coating and the wide-width film pressing film, and the damage of the stripping process to the holographic optical grain information in the process of rolling is reduced by virtue of the low surface active energy anti-sticking property of the polybenzoxazine resin, so that the damage is furthest reserved.
The invention limits the type of the selected benzoxazine resin, and the cured bisphenol A type benzoxazine, bisphenol F type benzoxazine, MDA type benzoxazine, phenolphthalein type benzoxazine and DOPO type benzoxazine resin used in the invention have high glass transition temperature, can endure long-term use environment of more than 180 ℃ for a long time and have good working performance.
Further, in the step S4, the preheating mode is heating by a work roll, the heating temperature is 80-120 ℃ for the film pressing mother board, and the wide film pressing belt is 160-190 ℃.
Further, in the step S4, the mutual counter pressure is 70Pa to 120 Pa.
Further, in the step S4, the corona treatment voltage is 6-18kV, and the treatment speed is 12-20 m/S.
Further, in step S4, the thickness of the PET-based film of the wide-width film laminate is 100-130 microns, and the thickness of the coated benzoxazine resin is 30-50 microns.
In order to enhance the bonding strength of the vacuum aluminum-plated layer to the wide-width film pressed film, the polybenzoxazine resin on the wide-width film pressed film is subjected to corona treatment, so that the internal molecular chemical bonds are broken, the intramolecular hydrogen bonds are damaged, the surface roughness is increased, the surface free energy is improved, and the bonding capability of the vacuum aluminum-plated layer is enhanced.
When the nickel plate is used for laser printing, the nickel plate is extruded by the working roller for a long time, the nickel plate is abraded and cracked under the erosion of external force, and the loss and the cracking failure rate of the nickel plate are improved along with the increase of the volume and the width of the nickel plate.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, a traditional nickel plate is used as a mother plate for printing, a PET (polyethylene terephthalate) base film and thermosetting acrylic resin are used as matrixes, holographic optical pattern information on the nickel plate is printed on a film-pressing mother plate after mould pressing, and a metal layer is plated on the holographic optical pattern information in a vacuum manner to prepare a polybenzoxazine resin layer so as to enhance the strength of the polybenzoxazine resin layer, reduce the surface energy of the polybenzoxazine resin layer and reduce the adhesive force; then preparing a wide-width film pressing belt, reprinting the holographic optical pattern information on the film pressing mother board on the wide-width film pressing belt again to make the holographic optical pattern information identical to that of the nickel plate, thereby achieving the purpose that the printed pattern on the paper is consistent with that of the nickel plate, and simultaneously, in order to further enhance the interlayer bonding capability of the wide-width film pressing belt, the invention also carries out corona treatment on the benzoxazine resin layer to enhance the surface roughness thereof, so that the service life of the wide-width film pressing belt is prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a phenolphthalein type benzoxazine solution containing 20% of phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the PET base film into a drying box, drying for 3min at 140 ℃, preparing a phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by the working roller at 100 ℃ of the upper working roller and 180 ℃ of the lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 15 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
Example 2
This embodiment raises the heating temperature of the lower work roll at the time of preheating, compared with embodiment 1.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a phenolphthalein type benzoxazine solution containing 20% of phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the PET base film into a drying box, drying for 3min at 140 ℃, preparing a phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by the working roller at 100 ℃ of the upper working roller and 190 ℃ of the lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 15 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
Example 3
This example improves the treatment rate at the time of corona treatment compared to example 1.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a phenolphthalein type benzoxazine solution containing 20% of phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the PET base film into a drying box, drying for 3min at 140 ℃, preparing a phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by adopting the working roller at the heating temperature of 100 ℃ of an upper working roller and 180 ℃ of a lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 20 m/s;
s6, vacuum aluminizing is carried out on the wide-width film pressing belt, and a bright mirror aluminum layer is plated, so that the nickel-free wide-width film pressing belt can be obtained.
Example 4
This example improves the pressure between the upper and lower work rolls at the time of the relative pressing, compared with example 1.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a phenolphthalein type benzoxazine solution containing 20% of phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the PET base film into a drying box, drying for 3min at 140 ℃, preparing a phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by the working roller at 100 ℃ of the upper working roller and 180 ℃ of the lower working roller; preparing a holographic optical grain information layer on the surface of the wide-width film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 120 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 15 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
Example 5
This example changed the kind of benzoxazine compared to example 1.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a bisphenol A type phenolphthalein type benzoxazine solution containing 20% of bisphenol A type phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the chromium layer into a drying box, drying the bisphenol A type phenolphthalein type benzoxazine solution for 3min at 140 ℃, preparing a bisphenol A type phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by the working roller at 100 ℃ of the upper working roller and 180 ℃ of the lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating bisphenol A type phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 15 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
Comparative example 1
In contrast to example 1, the present comparative example did not use a benzoxazine resin.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, moving the molded PET base film into a vacuum coating machine, and evaporating a chromium layer with the thickness of 0.5nm to obtain a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by adopting the working roller at the heating temperature of 100 ℃ of an upper working roller and 180 ℃ of a lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother plate, and coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 15 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
Comparative example 2
This comparative example reduces the heating temperature of the lower work roll at the time of preheating, compared with example 1.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a phenolphthalein type benzoxazine solution containing 20% of phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the PET base film into a drying box, drying for 3min at 140 ℃, preparing a phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by the working roller at 100 ℃ of the upper working roller and 120 ℃ of the lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 6kV, and the treatment speed is 15 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
Comparative example 3
This comparative example increases the power of the corona treatment and decreases the treatment rate compared to example 1.
S1, preparing a nickel plate mother board according to a pattern;
s2, cutting a PET base film with the thickness of 100 mu m, cutting the PET base film to the size of a nickel plate template, coating thermosetting acrylic resin with the thickness of 30 mu m on the PET base film, installing a nickel plate master plate on a mould press, heating to 100 ℃, and carrying out mould pressing;
s3, transferring the molded PET base film into a vacuum coating machine, evaporating a chromium layer with the thickness of 0.5nm, spraying a phenolphthalein type benzoxazine solution containing 20% of phenolphthalein type benzoxazine and 80% of acetone on the surface of the chromium layer, placing the PET base film into a drying box, drying for 3min at 140 ℃, preparing a phenolphthalein type benzoxazine anti-sticking layer, and obtaining a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board on the roller machine, arranging a working roller below the roller machine, installing a wide film pressing belt, preheating the film pressing mother board and the wide film pressing belt during working, and heating by the working roller at 100 ℃ of the upper working roller and 180 ℃ of the lower working roller; preparing a holographic optical grain information layer on the surface of a wide film pressing belt in a mutual pressing mode, wherein the mutual pressing pressure is 100 Pa;
the preparation method of the wide-width film laminating tape comprises the following steps:
cutting a PET base film with the thickness of 120 mu m to ensure that the width of the PET base film is the same as that of a film pressing mother board, and coating phenolphthalein type benzoxazine resin with the thickness of 30 mu m on the PET base film to obtain a wide film pressing belt;
s5, carrying out corona treatment on the wide-width film pressing belt, wherein the corona treatment voltage is 24kV, and the treatment speed is 12 m/s;
and S6, carrying out vacuum aluminizing on the wide-width film pressing belt, and plating a bright mirror aluminum layer to obtain the nickel-free wide-width film pressing belt.
The detection of examples 1 to 5 and comparative examples 1 to 3 was carried out by laser printing using the nickel master prepared in examples 1 to 5 and comparative examples 1 to 3 and a wide film press film, respectively, and after the printing was finished, a 2 × 2mm square was taken from the same position of the printed pattern to detect whether the holographic optical grain was damaged, and the results are shown in the following table.
From the comparison between example 1 and comparative example 1, it is found that the holographic optical grain information of example 1 using the benzoxazine resin is better preserved.
From the comparison between examples 1-2 and comparative example 2, it is found that when the preheating temperature of the lower working roll is lower than the curing temperature of the benzoxazine resin, the stability of the benzoxazine resin and the property of low surface energy of the benzoxazine resin cannot be embodied, and when the preheating temperature is higher than the curing temperature, the benzoxazine resin is cured, so that the performance is improved;
the comparison of examples 1 and 3 with comparative example 3 shows that the power and duration of corona treatment have great influence on the preservation rate of holographic optical line information, the thickness of the benzoxazine resin prepared by the invention is thin, and when the corona power is too high or the treatment speed is too slow, the benzoxazine resin is aged, so that the performance is reduced;
from the comparison of examples 1, 4 and 5, it is found that the change of the relative pressure and the kind of the benzoxazine resin during the reprinting has little influence on the storage condition of the holographic optical grain information.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A processing technology of a nickel-free wide film pressing film is characterized by comprising the following steps:
s1, preparing a nickel plate mother board according to required holographic light pattern information;
s2, cutting the PET base film to enable the width of the PET base film to be the same as that of the nickel plate mother board, coating thermosetting acrylic resin on the PET base film, installing the nickel plate mother board on a mould press, heating to 80-100 ℃, and carrying out mould pressing;
s3, moving the molded PET base film into a vacuum coating machine, evaporating to prepare a metal adhesion layer, spraying a benzoxazine solution on the surface of the metal adhesion layer, placing the metal adhesion layer into a drying box, drying at the temperature of 120-140 ℃ for 3-5min, and taking out to prepare a benzoxazine anti-adhesion layer to obtain a pressed film master plate;
s4, opening a roller machine, installing a film pressing mother board and a wide film pressing belt on the roller machine, preheating the film pressing mother board and the wide film pressing belt during working, preparing holographic light pattern information on the surface of the wide film pressing belt in a mode that working rollers mutually press against each other, and carrying out corona treatment on the holographic light pattern information by using a corona treatment device;
the preparation method of the wide-width film laminating belt comprises the following steps: cutting the PET base film, and coating benzoxazine resin on the PET base film to obtain a wide film pressing belt;
and S5, carrying out vacuum aluminizing on the wide-width film pressing belt to obtain the nickel-free wide-width film pressing belt.
2. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in step S1, the thickness of the nickel plate mother plate is 120-150 μm.
3. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in the step S2, the thickness of the PET-based film is 100-130 μm.
4. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: the thickness of the metal attachment layer is 0.3-2nm, and the metal of the metal attachment layer is any one or more of titanium, chromium and nickel.
5. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in the step S3, the benzoxazine solution is a mixed solution of 15% -30% benzoxazine resin and 70% -85% acetone; the thickness of the benzoxazine anti-sticking layer is 0.1-0.5 nm.
6. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: the benzoxazine is any one or more of bisphenol A type benzoxazine, bisphenol F type benzoxazine, MDA type benzoxazine, phenolphthalein type benzoxazine and DOPO type benzoxazine.
7. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in the step S4, the preheating mode is heating by a working roll, the heating temperature is 80-120 ℃ for the film pressing mother board, and the wide film pressing belt is 160-190 ℃.
8. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in the step S4, the mutual counter pressure is 70Pa to 120 Pa.
9. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in the step S4, the corona treatment voltage is 6-18kV, and the treatment speed is 12-20 m/S.
10. The processing technology of the nickel-free wide film pressing film according to claim 1, characterized in that: in step S4, the thickness of the PET-based film of the wide-width film laminate is 100-130 microns, and the thickness of the benzoxazine resin coating is 30-50 microns.
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