CN113928036B - Front high-temperature UV imprinting process - Google Patents

Front high-temperature UV imprinting process Download PDF

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Publication number
CN113928036B
CN113928036B CN202111144496.6A CN202111144496A CN113928036B CN 113928036 B CN113928036 B CN 113928036B CN 202111144496 A CN202111144496 A CN 202111144496A CN 113928036 B CN113928036 B CN 113928036B
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Prior art keywords
plate
mold
temperature
imprinting
glue
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CN113928036A (en
Inventor
李锦亮
文妙清
魏先钊
汤占刚
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Dongguan Yintaifeng Optical Technology Co Ltd
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Dongguan Yintaifeng Optical Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/24—Inking and printing with a printer's forme combined with embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • 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
    • B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
    • 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
    • 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
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The invention relates to the technical field of production machinery, and discloses a front high-temperature UV imprinting process, which comprises the following steps of: step one: manufacturing an imprinting mold by using a photoetching technology, preparing an imprinting plate, preparing materials, controlling an ultrasonic cutting machine to cut out the plate corresponding to the size of the imprinting mold by using a computer according to the requirement, and verifying and detecting the size to ensure that the plate meets the requirement; step two: and (3) checking the specifications of the UV adhesive and the mold, ensuring that the stock of the UV adhesive is sufficient and the quality of the UV adhesive meets the standard, ensuring whether the mold specifications are in compound standard or not, ensuring that the plate opened in the step I corresponds to the mold specifications, and if the plate opened in the step I does not accord with the mold specifications, re-performing UV imprinting from the beginning of the step I, thereby ensuring the integrity of the imprinting effect. According to the invention, the environment temperature is increased by adopting the infrared ray and the hot air drying device while UV illumination is carried out, so that the UV adhesive is cured in a high-temperature environment, and the process flow is effectively shortened.

Description

Front high-temperature UV imprinting process
Technical Field
The invention relates to the technical field of UV imprinting, in particular to a front high-temperature UV imprinting process.
Background
UV printing is a printing process in which the ink is dried and cured by ultraviolet light, and it is necessary to match the ink containing a photosensitizer with a UV curing lamp. The application of UV printing is one of the most important matters in the printing industry. Compared with the traditional offset printing, the printing material has the characteristics of bright coloring, special printing material, novel product, wide market prospect and the like, and is suitable for the product fields of high-grade business card fine product packaging, high-end commercial painting books, special desk calendars, special label printing and the like. UV ink has already covered fields such as offset printing, silk screen, ink jet, pad printing, etc., UV that the traditional printing world generally refers to is the printing effect technology, namely one prints you want pattern on and wraps up with a layer of gloss oil (have gloss, matte, inlay crystal, glitter powder, etc.), mainly increase product brightness and artistic effect, protect the product surface, its hardness is high, corrosion-resistant friction, difficult appearance scratch, etc., some complex film products change into UV now, can reach the environmental protection requirement, but UV products are difficult to bond, some can only be solved through local UV or polish. UV imprinting, i.e. ultraviolet light imprinting.
When the existing domestic UV imprinting is produced, firstly, the prepared glue is put into a water tank, and when the production is carried out, a net roller is immersed in the glue to glue and is coated on a film, and then UV imprinting is carried out; the embossing mode comprises two parts: the first step uses the web roll to glue the film, and the second part glues the film and carries out UV impression, however, the current coating method of UV impression has low production efficiency, increased cost, caused waste, increased staff's work load, and the current UV impression technology in the market is low temperature UV ink material simultaneously, has certain test risk like: the front surface has poor scratch resistance, paint can be dropped after long-time use, and the humidity resistance is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a front high-temperature UV imprinting process, which solves the problems that when the prior domestic UV imprinting is produced, the prepared glue is firstly put in a water tank, a net roller is immersed in the glue to glue and is coated on a film during production, and then the UV imprinting is carried out; the embossing mode comprises two parts: the first step uses the web roll to glue the film, and the second part glues the film and carries out UV impression, however, the current coating method of UV impression has low production efficiency, increased cost, caused waste, increased staff's work load, and the current UV impression technology in the market is low temperature UV ink material simultaneously, has certain test risk like: the front surface has poor scratch resistance, paint is dropped after long-time use, the humidity resistance is poor, and the like.
The invention provides the following technical scheme: a front side high temperature UV imprinting process comprising the steps of:
step one: manufacturing an imprinting mold by using a photoetching technology, preparing an imprinting plate, preparing materials, controlling an ultrasonic cutting machine to cut out the plate corresponding to the size of the imprinting mold by using a computer according to the requirement, and verifying and detecting the size to ensure that the plate meets the requirement;
step two: checking the specifications of the UV glue and the mold, ensuring that the storage quantity and quality of the UV glue reach the standard, ensuring whether the mold specifications are in compound standard or not, ensuring that the plate opened in the first step corresponds to the mold specifications, and if the plate opened in the first step does not accord with the mold specifications, re-performing UV imprinting from the first step, thereby ensuring the integrity of the imprinting effect;
step three: covering the UV glue on the mold, covering the plate on the UV glue, slightly pressing the plate to ensure that the UV glue is dispersed and spread between the mold and the plate, and using a cylinder to drive a press roller to squeeze the plate so as to ensure that the UV glue is spread on the mold uniformly;
step four: the UV light source is used for irradiating for 5-8s for primary fixation, the ambient temperature in the irradiation process is increased, UV light penetrates through the plate to irradiate the UV glue for 40-60s again for completing bonding, the UV glue is enabled to be quickly solidified, the high-temperature environment accelerates drying of UV, the stamping strength is increased, and falling off or easy aging is avoided;
step five: the solidified UV glue comprises a die and a lower part of a movable punching machine of a plate, all waste materials overflowing out of the edge of the die from the UV glue are cut off through the punching machine, and the cut waste materials are discharged and recycled;
step six: removing and demoulding the solidified UV glue from the mould through the plate;
step seven: sampling and detecting the demoulded finished product, wherein the sampling and detecting comprises ageing resistance testing, high-temperature high-humidity cold-hot circulation testing and the like;
step eight: and packaging and discharging the finished product.
Preferably, the imprinting mold manufactured in the first step is imprinted on the substrate by adopting a nanoimprint technology to form a product, the mold is placed on the substrate to be heated, the mold is pressurized after being heated to the glass transition temperature of the substrate, when the temperature reaches the heating highest temperature, the mold is subjected to heat preservation and pressure maintaining, then the temperature is reduced, and when the temperature is reduced to the glass transition temperature, the mold is released, and the final product is obtained.
Preferably, the plate in the first step is made of PET, the thickness is between 0.25mm and 0.8mm, the UV glue in the second step is prevented from being in direct contact with operators in the using process, and the content of the photosensitizer in the UV glue is ensured to be between 3 and 6 percent.
Preferably, in the third step, a mechanical arm is used to move the plate and cover the plate above the UV adhesive, the mechanical arm is connected with a main control system, the main control system is connected with a laser sensor at the same time, and the laser sensor detects and positions the plate and the die.
Preferably, the UV light source in the fourth step adopts an ultraviolet light source with the wavelength of 365nm-400nm, the high-temperature environment adopts an infrared and hot air drying device, and the environment temperature is kept between 80-100 degrees.
Preferably, the aging resistance test in the step seven means that scratch resistance test is carried out on the front surface of the UV adhesive after embossing, the test is carried out by rubbing 10000 times within 5 minutes, and the temperature interval of high-temperature high-humidity cold-hot circulation test is controlled to be between minus 50 degrees and plus 120 degrees.
The invention has the following beneficial effects:
1. according to the front high-temperature UV stamping process, the environment temperature is improved by adopting the infrared rays and the hot air drying device while UV illumination is carried out, so that the UV adhesive is solidified in a high-temperature environment, the process flow is effectively shortened, and the risk that front embossing is fallen off is prevented.
2. According to the front high-temperature UV stamping process, the stamped UV glue is subjected to sampling detection, and the testing comprises ageing resistance testing, high-temperature high-humidity testing, cold-hot circulation testing and the like, so that the testing performance of products is improved, the cost is saved, and the stamped finished product cannot be not moisture-resistant or can be used for a long time to fall off paint.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
a front side high temperature UV imprinting process comprising the steps of:
step one: manufacturing an imprinting mold by using a photoetching technology, preparing an imprinting plate, preparing materials, controlling an ultrasonic cutting machine to cut out the plate corresponding to the size of the imprinting mold by using a computer according to the requirement, and verifying and detecting the size to ensure that the plate meets the requirement;
step two: checking the specifications of the UV glue and the mold, ensuring that the storage quantity and quality of the UV glue reach the standard, ensuring whether the mold specifications are in compound standard or not, ensuring that the plate opened in the first step corresponds to the mold specifications, and if the plate opened in the first step does not accord with the mold specifications, re-performing UV imprinting from the first step, thereby ensuring the integrity of the imprinting effect;
step three: covering the UV glue on the mold, covering the plate on the UV glue, slightly pressing the plate to ensure that the UV glue is dispersed and spread between the mold and the plate, and using a cylinder to drive a press roller to squeeze the plate so as to ensure that the UV glue is spread on the mold uniformly;
step four: the UV light source is used for irradiating for 5-8s for primary fixation, the ambient temperature in the irradiation process is increased, UV light penetrates through the plate to irradiate the UV glue for 40-60s again for completing bonding, the UV glue is enabled to be quickly solidified, the high-temperature environment accelerates drying of UV, the stamping strength is increased, and falling off or easy aging is avoided;
step five: the solidified UV glue comprises a die and a lower part of a movable punching machine of a plate, all waste materials overflowing out of the edge of the die from the UV glue are cut off through the punching machine, and the cut waste materials are discharged and recycled;
step six: removing and demoulding the solidified UV glue from the mould through the plate;
step seven: sampling and detecting the demoulded finished product, wherein the sampling and detecting comprises ageing resistance testing, high-temperature high-humidity cold-hot circulation testing and the like;
step eight: and packaging and discharging the finished product.
The method comprises the steps of manufacturing an imprinting mold, namely, imprinting the mold on a substrate by adopting a nano imprinting technology to form a product, placing the mold on the substrate, heating the mold to the glass transition temperature of the substrate, pressurizing the mold, keeping the temperature and the pressure when the temperature reaches the heating highest temperature, then reducing the pressure and the temperature, and demolding the mold when the temperature is reduced to the glass transition temperature to obtain the final product.
Wherein the plate in the first step is made of PET, the thickness is between 0.25mm and 0.8mm, and the UV adhesive in the second step is prevented from being in direct contact with operators in the use process, and meanwhile the content of the photosensitizer in the UV adhesive is ensured to be between 3 and 6 percent.
The third step is to move the plate and cover the plate above the UV adhesive by using a mechanical arm, wherein the mechanical arm is connected with a main control system, the main control system is connected with a laser sensor at the same time, and the laser sensor detects and positions the plate and the die.
Wherein the UV light source in the fourth step adopts an ultraviolet light source with the wavelength of 365nm-400nm, the high-temperature environment adopts an infrared and hot air drying device, and the environment temperature is kept between 80-100 degrees.
The aging resistance test in the step seven means that scratch resistance test is carried out on the front surface of the UV adhesive after embossing, the test is carried out by rubbing 10000 times within 5 minutes, and the temperature interval of the high-temperature high-humidity cold-hot circulation test is controlled to be between minus 50 degrees and plus 120 degrees.
Embodiment two:
a front side high temperature UV imprinting process comprising the steps of:
step one: manufacturing an imprinting mold by using a photoetching technology, preparing an imprinting plate, preparing materials, controlling an ultrasonic cutting machine to cut out the plate corresponding to the size of the imprinting mold by using a computer according to the requirement, and verifying and detecting the size to ensure that the plate meets the requirement;
step two: checking the specifications of the UV glue and the mold, ensuring that the storage quantity and quality of the UV glue reach the standard, ensuring whether the mold specifications are in compound standard or not, ensuring that the plate opened in the first step corresponds to the mold specifications, and if the plate opened in the first step does not accord with the mold specifications, re-performing UV imprinting from the first step, thereby ensuring the integrity of the imprinting effect;
step three: covering the UV glue on the mold, covering the plate on the UV glue, slightly pressing the plate to ensure that the UV glue is dispersed and spread between the mold and the plate, and using a cylinder to drive a press roller to squeeze the plate so as to ensure that the UV glue is spread on the mold uniformly;
step four: the UV light source is used for irradiating for 6-10s for primary fixation, the ambient temperature in the irradiation process is increased, UV light penetrates through the plate to irradiate the UV glue for 30-50s again for completing bonding, the UV glue is enabled to be quickly solidified, the high-temperature environment accelerates drying of UV, the stamping strength is increased, and falling off or easy aging is avoided;
step five: the solidified UV glue comprises a die and a lower part of a movable punching machine of a plate, all waste materials overflowing out of the edge of the die from the UV glue are cut off through the punching machine, and the cut waste materials are discharged and recycled;
step six: removing and demoulding the solidified UV glue from the mould through the plate;
step seven: sampling and detecting the demoulded finished product, wherein the sampling and detecting comprises ageing resistance testing, high-temperature high-humidity cold-hot circulation testing and the like;
step eight: and packaging and discharging the finished product.
The method comprises the steps of manufacturing an imprinting mold, namely, imprinting the mold on a substrate by adopting a nano imprinting technology to form a product, placing the mold on the substrate, heating the mold to the glass transition temperature of the substrate, pressurizing the mold, keeping the temperature and the pressure when the temperature reaches the heating highest temperature, then reducing the pressure and the temperature, and demolding the mold when the temperature is reduced to the glass transition temperature to obtain the final product.
The plate in the first step is made of PET, the thickness of the plate is between 0.25mm and 1mm, the UV adhesive in the second step is prevented from being in direct contact with an operator in the using process, and the content of the photosensitizer in the UV adhesive is ensured to be between 5 and 8 percent.
The third step is to move the plate and cover the plate above the UV adhesive by using a mechanical arm, wherein the mechanical arm is connected with a main control system, the main control system is connected with a laser sensor at the same time, and the laser sensor detects and positions the plate and the die.
Wherein the UV light source in the fourth step adopts an ultraviolet light source with the wavelength of 365nm-400nm, the high-temperature environment adopts an infrared and hot air drying device, and the environment temperature is kept between 90-110 degrees.
The aging resistance test in the step seven means that scratch resistance test is carried out on the front surface of the UV adhesive after stamping, the test is carried out by rubbing 7000 times within 3 minutes, and the temperature interval of the high-temperature high-humidity cold-hot cycle test is controlled to be between minus 50 degrees and plus 120 degrees.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A front side high temperature UV imprinting process comprising the steps of:
step one: manufacturing an imprinting mold by using a photoetching technology, preparing an imprinting plate, preparing materials, controlling an ultrasonic cutting machine to cut out the plate corresponding to the size of the imprinting mold by using a computer according to the requirement, and verifying and detecting the size to ensure that the plate meets the requirement;
step two: checking the specifications of the UV glue and the mold, ensuring that the storage quantity and quality of the UV glue reach the standard, ensuring whether the specifications of the mold meet the standard, ensuring that the plate opened in the step I corresponds to the specifications of the mold, and if the plate opened in the step I does not meet the specifications of the mold, re-performing UV imprinting from the beginning of the step I, thereby ensuring the integrity of the imprinting effect;
step three: covering the UV glue on the mold, covering the plate on the UV glue, slightly pressing the plate to ensure that the UV glue is dispersed and spread between the mold and the plate, and using a cylinder to drive a press roller to squeeze the plate so as to ensure that the UV glue is spread on the mold uniformly;
step four: the UV light source is used for irradiating for 5-8s for primary fixation, the ambient temperature in the irradiation process is increased, UV light penetrates through the plate to irradiate the UV glue for 40-60s again for completing bonding, the UV glue is enabled to be quickly solidified, the UV glue is accelerated to be dried in a high-temperature environment, the stamping strength is increased, and falling off or easy aging is avoided;
step five: moving the solidified UV glue, the die and the plate to the lower part of the punching machine, completely cutting off the waste part of the UV glue overflowing the edge of the die through the punching machine, and discharging and recycling the cut waste;
step six: removing and demoulding the solidified UV glue from the mould through the plate;
step seven: sampling and detecting the demoulded finished product, wherein the sampling and detecting comprises ageing resistance testing, high-temperature high-humidity cold-hot cycle testing;
step eight: and packaging and discharging the finished product.
2. A front side high temperature UV embossing process as claimed in claim 1, wherein: the imprinting mold manufactured in the first step is imprinted on a substrate by adopting a nano imprinting technology to form a product, the mold is placed on the substrate to be heated, the mold is pressurized after being heated to the glass transition temperature of the substrate, when the temperature reaches the heating highest temperature, the mold is subjected to heat preservation and pressure maintaining, then the temperature is reduced, and when the temperature is reduced to the glass transition temperature, the mold is released, and the final product is obtained.
3. A front side high temperature UV embossing process as claimed in claim 1, wherein: the first step is characterized in that the plate is made of PET, the thickness of the plate is between 0.25mm and 0.8mm, the UV adhesive in the second step is prevented from being in direct contact with an operator in the using process, and the content of the photosensitizer in the UV adhesive is ensured to be between 3 and 6 percent.
4. A front side high temperature UV embossing process as claimed in claim 1, wherein: in the third step, a mechanical arm is adopted to move the plate and cover the plate above the UV adhesive, the mechanical arm is connected with a main control system, the main control system is simultaneously connected with a laser sensor, and the laser sensor detects and positions the plate and the die.
5. A front side high temperature UV embossing process as claimed in claim 1, wherein: the UV light source in the step four adopts a wavelength of 365nm-400nm, the high-temperature environment adopts an infrared ray and hot air drying device, and the environment temperature is kept between 80 and 100 degrees.
6. A front side high temperature UV embossing process as claimed in claim 1, wherein: in the seventh step, the aging resistance test means that scratch resistance test is carried out on the front surface of the UV adhesive after embossing, the test is carried out by rubbing 10000 times within 5 minutes, and the temperature interval of the high-temperature high-humidity cold-hot cycle test is controlled to be between minus 50 degrees and plus 120 degrees.
CN202111144496.6A 2021-09-28 2021-09-28 Front high-temperature UV imprinting process Active CN113928036B (en)

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CN104626785A (en) * 2013-11-07 2015-05-20 孙娜 Ultraviolet gradual curing printing method
CN104029512B (en) * 2014-06-04 2016-03-30 绍兴京华激光制品有限公司 A kind of high refractive index transparent holographic film production technology
CN105403949B (en) * 2015-12-22 2018-10-19 翰博高新材料(合肥)股份有限公司 A kind of slimming light guide plate and preparation method thereof
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