CN110861421A - Snowflake UV ink screen printing curing method - Google Patents
Snowflake UV ink screen printing curing method Download PDFInfo
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- 241000533950 Leucojum Species 0.000 title claims abstract description 134
- 238000001723 curing Methods 0.000 title claims abstract description 71
- 238000007650 screen-printing Methods 0.000 title claims abstract description 35
- 239000000758 substrate Substances 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000007639 printing Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 238000000016 photochemical curing Methods 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 20
- 239000004576 sand Substances 0.000 abstract description 6
- 239000000976 ink Substances 0.000 description 74
- 239000007787 solid Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 7
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- 239000000123 paper Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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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
- B41M1/12—Stencil printing; Silk-screen printing
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- 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
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Abstract
本发明属于UV油墨丝印方法技术领域，尤其涉及一种雪花UV油墨丝印固化方法，包括以下步骤：S100：传送承印物至设定的位置；S200：丝印雪花UV油墨于承印物上；S300：通过光固机对丝印有雪花UV油墨的承印物进行固化，其中，光固机上设置有雪花UV灯和光固UV灯，雪花UV灯的UV能量小于光固UV灯的UV能量，丝印有雪花UV油墨的承印物先经过所述雪花UV灯照射，再经过光固UV灯照射。通过本发明方法丝印固化在承印物上的雪花UV油墨，在降低雪花UV油墨的粘稠度，以及降低对光固机设备的UV能量值的情况下，依然可以确保雪花UV油墨的开花效果良好、附着力强、抗拉强、抗刮强、柔韧性好，具有细密砂感、手感细腻、豪华典雅的效果，良品率高。
The present invention belongs to the technical field of UV ink screen printing methods, and in particular, relates to a snowflake UV ink screen printing curing method, comprising the following steps: S100: conveying a substrate to a set position; S200: screen printing snowflake UV ink on the substrate; S300: curing the substrate screen-printed with snowflake UV ink by a light curing machine, wherein the light curing machine is provided with a snowflake UV lamp and a light curing UV lamp, the UV energy of the snowflake UV lamp is less than the UV energy of the light curing UV lamp, and the substrate screen-printed with snowflake UV ink is first irradiated by the snowflake UV lamp, and then irradiated by the light curing UV lamp. The snowflake UV ink screen-cured on the substrate by the method of the present invention can still ensure good blooming effect, strong adhesion, strong tensile strength, strong scratch resistance, good flexibility, fine sand feeling, delicate hand feeling, luxurious and elegant effect, and high yield rate under the condition of reducing the viscosity of the snowflake UV ink and reducing the UV energy value of the light curing machine equipment.
Description
技术领域technical field
本发明属于UV油墨丝印方法技术领域，尤其涉及一种雪花UV油墨丝印固化方法。The invention belongs to the technical field of UV ink screen printing methods, and in particular relates to a snowflake UV ink screen printing curing method.
背景技术Background technique
如今人们对于印刷产品外观形状有了更高的要求，这就需要对印后加工要提高整体水平，来满足人们的需求。目前的一种在印品表面上丝印雪花UV油墨工艺，就具有细密砂感、手感细腻、豪华典雅的效果。但是，该种现有的工艺中，要求雪花UV油墨对于承印材料表面张力的达因值需38以上，并且雪花UV油墨的粘稠度必须达2500±200mPa·s，这就要求对机器设备的UV能量值必须达160mj/cm2以上。否则就会导致雪花UV油墨的开花效果不佳、附着力差、抗拉差、抗刮差、柔韧性差等的问题出现，无形中会导致不良率较高。Nowadays, people have higher requirements for the appearance and shape of printed products, which requires the overall level of post-press processing to be improved to meet people's needs. The current technology of silk-screening snowflake UV ink on the surface of the printed product has the effect of fine sand, fine hand, luxurious and elegant. However, in this existing process, the dyne value of the snowflake UV ink for the surface tension of the printing material is required to be more than 38, and the viscosity of the snowflake UV ink must reach 2500±200mPa·s, which requires the machine equipment The UV energy value must be above 160mj/cm 2 . Otherwise, problems such as poor blooming effect, poor adhesion, poor tensile resistance, poor scratch resistance, and poor flexibility of snowflake UV ink will occur, which will lead to a high defect rate.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种雪花UV油墨丝印固化方法，旨在解决现有技术中的丝印雪花UV油墨的工艺对雪花UV油墨的粘稠度要求高，且丝印后的印刷产品不良率高的技术问题。The object of the present invention is to provide a kind of snowflake UV ink screen printing curing method, aiming to solve the high requirement of the technology of the screen printing snowflake UV ink in the prior art to the viscosity of the snowflake UV ink, and the defective rate of the printed product after the screen printing is high. technical problem.
为实现上述目的，本发明实施例提供的一种雪花UV油墨丝印固化方法，包括以下步骤：In order to achieve the above purpose, a method for curing snowflake UV ink screen printing provided in the embodiment of the present invention comprises the following steps:
S100：传送承印物至设定的位置；S100: transfer the substrate to the set position;
S200：丝印雪花UV油墨于所述承印物上；S200: silk-screen snowflake UV ink on the substrate;
S300：通过光固机对丝印有雪花UV油墨的所述承印物进行固化，其中，所述光固机上设置有雪花UV灯和光固UV灯，所述雪花UV灯的UV能量小于所述光固UV灯的UV能量，丝印有雪花UV油墨的所述承印物先经过所述雪花UV灯照射，再经过所述光固UV灯照射。S300: Curing the substrate on which the snowflake UV ink is silk-screened by a light-curing machine, wherein the light-curing machine is provided with a snowflake UV lamp and a light-curing UV lamp, and the UV energy of the snowflake UV lamp is smaller than that of the light-curing UV lamp. The UV energy of the UV lamp, the substrate with the snowflake UV ink silk-screened is first irradiated by the snowflake UV lamp, and then irradiated by the light-curing UV lamp.
优选地，在所述步骤S300中，所述雪花UV灯的UV能量为18～20mj/cm2，所述光固UV灯的UV能量为100～110mj/cm2。Preferably, in the step S300, the UV energy of the snowflake UV lamp is 18-20 mj/cm 2 , and the UV energy of the light-solid UV lamp is 100-110 mj/cm 2 .
优选地，在所述步骤S300中，所述雪花UV灯的数量和所述光固UV灯的数量均为三支，且各支所述雪花UV灯和所述光固UV灯的功率为5.6～10kw。Preferably, in the step S300, the number of the snowflake UV lamps and the number of the light-solid UV lamps are both three, and the power of each of the snowflake UV lamps and the light-solid UV lamps is 5.6 ~10kw.
优选地，在所述步骤S300中，所述承印物经过所述雪花UV灯和所述光固UV灯的速度为25～26m/min。Preferably, in the step S300, the speed of the substrate passing through the snowflake UV lamp and the light-solid UV lamp is 25-26 m/min.
优选地，在所述步骤S300中，采用独立的控制系统分别对所述雪花UV灯和所述光固UV灯进行控制。Preferably, in the step S300, an independent control system is used to control the snowflake UV lamp and the light-solid UV lamp respectively.
优选地，在所述步骤S200中，所述雪花UV油墨的粘稠度为1800±200mPa·s。Preferably, in the step S200, the viscosity of the snowflake UV ink is 1800±200 mPa·s.
优选地，在所述步骤S200中，将雪花UV油墨丝印于所述承印物上之前，先对所述雪花UV油墨进行搅拌，然后增加稀释剂、消泡剂和流平剂至所述雪花UV油墨内。Preferably, in the step S200, before the snowflake UV ink is screen-printed on the substrate, the snowflake UV ink is first stirred, and then a diluent, a defoaming agent and a leveling agent are added to the snowflake UV ink in ink.
优选地，在所述步骤S200中，丝印所述雪花UV油墨时，采用300～400目的聚酯纱网版，控制刮刀的力度为29～30N、刮刀的角度为15～18°以及刮刀的速度为2400～2500s/h。Preferably, in the step S200, when silk-screening the snowflake UV ink, a 300-400 mesh polyester gauze screen is used to control the strength of the scraper to be 29-30N, the angle of the scraper to be 15-18° and the speed of the scraper It is 2400～2500s/h.
优选地，在所述步骤S100中，传送的所述承印物的表面张力的达因值为≥36。Preferably, in the step S100, the dyne value of the surface tension of the conveyed substrate is ≥36.
优选地，在所述步骤S100中，采用飞达上纸的方式传送所述承印物。Preferably, in the step S100, the printing material is transported by means of a feeder on paper.
本发明实施例提供的雪花UV油墨丝印固化方法中的上述一个或多个技术方案至少具有如下技术效果之一：完成对承印物进行丝印雪花UV油墨之后，再通过光固机对丝印在承印物上的雪花油墨进行光照固化；本发明中的光固机上设置有两组灯具，即雪花UV灯和光固UV灯，在进行固化步骤时，丝印有雪花UV油墨的承印物先经过所述雪花UV灯照射，再经过所述光固UV灯照射，由于雪花UV灯的UV能量小于光固UV灯的UV能量，这样，可以先通过UV能量较小的雪花UV灯的照射，对雪花UV油墨起到透花起花的作用，然后在通过UV能量较大的光固UV灯的照射，对雪花UV油墨起到充分的固化，如此，在降低雪花UV油墨的粘稠度，以及降低对光固机设备的UV能量值的情况下，依然可以确保雪花UV油墨的开花效果良好、附着力强、抗拉强、抗刮强、柔韧性好，具有细密砂感、手感细腻、豪华典雅的效果，良品率高。The above-mentioned one or more technical solutions in the silk-screen curing method for snowflake UV ink provided by the embodiments of the present invention have at least one of the following technical effects: after the screen printing of the snowflake UV ink on the substrate is completed, the screen printing on the substrate is performed by a light curing machine. The snowflake ink on it is light-cured; the light-curing machine in the present invention is provided with two sets of lamps, namely the snowflake UV lamp and the light-curing UV lamp. Light irradiation, and then irradiated by the light curing UV lamp, because the UV energy of the snowflake UV lamp is less than the UV energy of the light curing UV lamp, so the snowflake UV ink can be irradiated first by the irradiation of the snowflake UV lamp with less UV energy. It can fully cure the snowflake UV ink through the irradiation of the light-solid UV lamp with high UV energy. In this way, it can reduce the viscosity of the snowflake UV ink and reduce the light-solidification effect. Under the condition of the UV energy value of the machine equipment, it can still ensure that the snowflake UV ink has a good flowering effect, strong adhesion, strong tensile strength, strong scratch resistance, good flexibility, and has the effect of fine sand, fine hand, luxurious and elegant. High yield.
附图说明Description of drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.
图1为本发明实施例提供的雪花UV油墨丝印固化方法的流程图。FIG. 1 is a flowchart of a method for curing snowflake UV ink screen printing provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明的实施例，而不能理解为对本发明的限制。The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.
在本发明的一个实施例中，如图1所示，提供一种雪花UV油墨丝印固化方法，包括以下步骤：In one embodiment of the present invention, as shown in Figure 1, a method for curing snowflake UV ink screen printing is provided, comprising the following steps:
S100：传送承印物至设定的位置；具体地，该承印物例如可以是各种书卡、腹膜、金卡、银卡纸等；进一步地，传送承印物优选采用飞达上纸的方式输送，这样可以大大提高传送的效率，S100: Transfer the substrate to a set position; specifically, the substrate can be, for example, various book cards, peritoneal cards, gold cards, silver cardboards, etc.; further, the transfer substrate is preferably conveyed by means of feeder-on-paper , which can greatly improve the transmission efficiency,
S200：丝印雪花UV油墨于所述承印物上；承印物优选输送在自动丝印机上进行丝印，自动丝印机时速在2500张左右，有效提高自动丝印机器的稳定性和高质量，确保对承印物的雪花UV油墨的丝印效果优良。S200: screen printing snowflake UV ink on the substrate; the substrate is preferably transported to an automatic screen printing machine for screen printing. The speed of the automatic screen printing machine is about 2500 sheets per hour, which effectively improves the stability and high quality of the automatic screen printing machine. Snowflake UV ink has excellent screen printing effect.
S300：通过光固机对丝印有雪花UV油墨的所述承印物进行固化，其中，所述光固机上设置有雪花UV灯和光固UV灯，所述雪花UV灯的UV能量小于所述光固UV灯的UV能量，丝印有雪花UV油墨的所述承印物先经过所述雪花UV灯照射，再经过所述光固UV灯照射。S300: Curing the substrate on which the snowflake UV ink is silk-screened by a light-curing machine, wherein the light-curing machine is provided with a snowflake UV lamp and a light-curing UV lamp, and the UV energy of the snowflake UV lamp is smaller than that of the light-curing UV lamp. The UV energy of the UV lamp, the substrate with the snowflake UV ink silk-screened is first irradiated by the snowflake UV lamp, and then irradiated by the light-curing UV lamp.
本实施例中，完成对承印物进行丝印雪花UV油墨之后，再通过光固机对丝印在承印物上的雪花油墨进行光照固化；本发明中的光固机上设置有两组灯具，即雪花UV灯和光固UV灯，在进行固化步骤时，丝印有雪花UV油墨的承印物先经过所述雪花UV灯照射，再经过所述光固UV灯照射，由于雪花UV灯的UV能量小于光固UV灯的UV能量，这样，可以先通过UV能量较小的雪花UV灯的照射，对雪花UV油墨起到透花起花的作用，然后在通过UV能量较大的光固UV灯的照射，对雪花UV油墨起到充分的固化，如此，在降低雪花UV油墨的粘稠度，以及降低对光固机设备的UV能量值的情况下，依然可以确保雪花UV油墨的开花效果良好、附着力强、抗拉强、抗刮强、柔韧性好，具有细密砂感、手感细腻、豪华典雅的效果，良品率高。In this embodiment, after the screen printing snowflake UV ink on the substrate is completed, the snowflake ink silk-screened on the substrate is then light-cured by a photo-curing machine; Lamp and light-curing UV lamp, during the curing step, the substrate printed with snowflake UV ink is first irradiated by the snowflake UV lamp, and then irradiated by the light-curing UV lamp, because the UV energy of the snowflake UV lamp is less than that of the light-curing UV lamp. The UV energy of the lamp, so that the snowflake UV ink can be irradiated by the snowflake UV lamp with a small UV energy first, and then the snowflake UV ink can be penetrated and bloomed, and then the light-solid UV lamp with a large UV energy can be irradiated. Snowflake UV ink is fully cured. In this way, in the case of reducing the viscosity of Snowflake UV ink and reducing the UV energy value of the light curing machine, it can still ensure good flowering effect and strong adhesion of Snowflake UV ink. , tensile strength, scratch resistance, good flexibility, with fine sand feeling, fine hand feeling, luxurious and elegant effect, high yield.
本发明的雪花UV油墨丝印固化方法彻底改变了传统的采用高达因值的承印材料的表面张力(38以上)，高粘稠度的雪花UV油墨(必须达2500±200mPa·s)，以及高UV能量值(160mj/cm2以上)的机器设备才能丝印固化出具有细密砂感、手感细腻、豪华典雅的效果的雪花UV油墨的印刷产品的方法。采用本发明的方法对承印物的表面张力的达因值需求较低，雪花UV油墨的粘稠度要求较低，机器设备的UV能量值要求较低，依然可以确保雪花UV油墨的开花效果良好、附着力强、抗拉强、抗刮强、柔韧性好，具有细密砂感、手感细腻、豪华典雅的效果，良品率高。无论在生产成本上，还是生产效率上，或是生产质量上都得以提升，具有极佳的市场前景。The snowflake UV ink screen printing curing method of the present invention completely changes the surface tension (above 38) of the traditional printing material with high factor value, high viscosity snowflake UV ink (must reach 2500±200mPa·s), and high UV Only machines and equipment with energy value (above 160mj/cm 2 ) can screen-print and solidify the printing products of snowflake UV ink with fine sand feeling, delicate hand feeling, luxurious and elegant effect. The method of the invention has lower requirements for the dyne value of the surface tension of the substrate, lower requirements for the viscosity of the snowflake UV ink, and lower requirements for the UV energy value of the machinery and equipment, and can still ensure good blooming effect of the snowflake UV ink. , Strong adhesion, strong tensile strength, strong scratch resistance, good flexibility, with fine sand feeling, fine hand feeling, luxurious and elegant effect, high yield. No matter in terms of production cost, production efficiency, or production quality, it has been improved, and it has excellent market prospects.
在本发明的另一个实施例中，在所述步骤S300中，所述雪花UV灯的UV能量为18～20mj/cm2，具体地，雪花UV灯的UV能量可以设定为18mj/cm2、19mj/cm2或者20mj/cm2。所述光固UV灯的UV能量为100～110mj/cm2，光固UV灯的UV能量可以设定为100mj/cm2、105mj/cm2或者110mj/cm2。也就说，在实际进行对雪花UV油墨进行固化工序时，雪花UV灯的UV能量需要设定在18～20mj/cm2范围内，光固UV灯的UV能量需要设定在100～110mj/cm2范围内并确保雪花UV灯的UV能量需要小于光固UV灯的UV能量，如此可以确保整个固化工序中，机器设备的UV能量值都小于160mj/cm2，机器设备的能量不会过高或过低，在不影响雪花型的大小的情况下，能够有效实现将雪花UV油墨固化成细密砂感、手感细腻、豪华典雅的效果。In another embodiment of the present invention, in the step S300, the UV energy of the snowflake UV lamp is 18-20 mj/cm 2 , and specifically, the UV energy of the snowflake UV lamp can be set to 18 mj/cm 2 , 19mj/cm 2 or 20mj/cm 2 . The UV energy of the light curing UV lamp is 100-110 mj/cm 2 , and the UV energy of the light curing UV lamp can be set to 100 mj/cm 2 , 105 mj/cm 2 or 110 mj/cm 2 . That is to say, in the actual curing process of snowflake UV ink, the UV energy of the snowflake UV lamp needs to be set in the range of 18 ~ 20mj/cm 2 , and the UV energy of the light curing UV lamp needs to be set in the range of 100 ~ 110mj/ Within the range of cm 2 and ensure that the UV energy of the snowflake UV lamp needs to be less than the UV energy of the light curing UV lamp, it can ensure that the UV energy value of the machine equipment is less than 160mj/cm 2 in the entire curing process, and the energy of the machine equipment will not exceed High or too low, without affecting the size of the snowflake, can effectively achieve the effect of curing the snowflake UV ink into a fine sandy, delicate, luxurious and elegant effect.
在本发明的另一个实施例中，在所述步骤S300中，所述雪花UV灯的数量和所述光固UV灯的数量均为三支，三支雪花UV灯为第一组在先灯具，三支光固UV灯为第二组在后灯具，通过如此设计，可以通过该第一组灯具和第二组灯具先后对承印物上丝印的雪花UV油墨进行固化，可以降低雪花UV灯和光固UV灯所需要设定的UV能量值，这样就降低了固化机的要求，进行可以降低生产成本的情况保证生产质量。并且，各支所述雪花UV灯和所述光固UV灯的功率为5.6～10kw。即可以选用功率为5.6kw、7kw、8kw、9kw、10kw的UV灯作为雪花UV灯或者光固UV灯。In another embodiment of the present invention, in the step S300, the number of the snowflake UV lamps and the number of the light-solid UV lamps are both three, and the three snowflake UV lamps are the first group of prior lamps , the three light-curing UV lamps are the second group of rear lamps. Through this design, the first group of lamps and the second group of lamps can successively cure the snowflake UV ink silk-screened on the substrate, which can reduce the amount of snowflake UV lamps and light. The UV energy value that needs to be set for the solid UV lamp, thus reducing the requirements of the curing machine, and ensuring the production quality while reducing the production cost. In addition, the power of each of the snowflake UV lamps and the light-solid UV lamps is 5.6-10kw. That is, UV lamps with a power of 5.6kw, 7kw, 8kw, 9kw and 10kw can be selected as snowflake UV lamps or light-solid UV lamps.
在本发明的另一个实施例中，在所述步骤S300中，所述承印物经过所述雪花UV灯和所述光固UV灯的速度为25～26m/min。在该速度范围内，可以使得承印物上丝印的雪花UV油墨具有充分的时间进行固化，又不会因为时间太短而影响对雪花UV油墨的固化。In another embodiment of the present invention, in the step S300, the speed of the substrate passing through the snowflake UV lamp and the light-solid UV lamp is 25-26 m/min. Within this speed range, the snowflake UV ink screen printed on the substrate can have sufficient time to cure, and the curing of the snowflake UV ink will not be affected because the time is too short.
在本发明的另一个实施例中，在所述步骤S300中，采用独立的控制系统分别对所述雪花UV灯和所述光固UV灯进行控制。具体地，采用独立的控制系统可以控制每组的运转速度来调节雪花UV灯或者光固UV灯的UV能量的大小。这样，可以根据对不同承印物丝印雪花UV油墨后的固化，选择不同的固化操作，保证对不同承印物上的雪花UV油墨的印刷均可以达到细密砂感、手感细腻、豪华典雅的效果。In another embodiment of the present invention, in the step S300, an independent control system is used to control the snowflake UV lamp and the light-solid UV lamp respectively. Specifically, an independent control system can be used to control the running speed of each group to adjust the UV energy of the snowflake UV lamp or the light-solid UV lamp. In this way, different curing operations can be selected according to the curing of snowflake UV ink on different substrates after silk screen printing, so as to ensure that the printing of snowflake UV ink on different substrates can achieve the effect of fine sandy, delicate hand feeling, luxurious and elegant.
在本发明的另一个实施例中，在所述步骤S200中，所述雪花UV油墨的粘稠度为1800±200mPa·s。本实施例中所采用的雪花UV油墨的粘稠度在1800±200mPa·s范围内，相对传统工艺需要雪花UV油墨的粘稠度必须达2500±200mPa·s，大大地降低了对雪花UV油墨的要求，进而可以降低材料成本。In another embodiment of the present invention, in the step S200, the viscosity of the snowflake UV ink is 1800±200 mPa·s. The viscosity of the snowflake UV ink used in this embodiment is in the range of 1800±200mPa·s. Compared with the traditional process, the viscosity of the snowflake UV ink must reach 2500±200mPa·s, which greatly reduces the impact on the snowflake UV ink. requirements, thereby reducing material costs.
进一步地，雪花UV油墨的外观需要达到乳白色，略带气味。柔软度一般。非挥发份≥99.5％。比重为1.05g/cm3。无残留气味。调试的雪花UV油墨属于低气味环保型油墨，不含有机溶剂，经国际认可机构科学鉴定，符合环保标准。Further, the appearance of Snowflake UV ink needs to be milky white with a slight odor. Softness is average. Non-volatile matter ≥ 99.5%. The specific gravity was 1.05 g/cm 3 . No residual odor. The debugged Snowflake UV ink is a low-odor environment-friendly ink without organic solvent. It has been scientifically identified by an international accreditation agency and meets environmental protection standards.
在本发明的另一个实施例中，在所述步骤S200中，将雪花UV油墨丝印于所述承印物上之前，先对所述雪花UV油墨进行搅拌，搅拌操作可以调稀雪花UV油墨。然后增加稀释剂、消泡剂和流平剂至所述雪花UV油墨内。增加稀释剂可以增加雪花UV油墨的流动性，有利于对雪花UV油墨进行丝印。消泡剂和流平剂的增加可以改善雪花效果，改善涂层的柔性、硬度等性能。In another embodiment of the present invention, in the step S200, before the snowflake UV ink is screen-printed on the substrate, the snowflake UV ink is first stirred, and the stirring operation can dilute the snowflake UV ink. Diluents, defoamers and leveling agents were then added to the Snowflake UV ink. Adding diluent can increase the fluidity of Snowflake UV ink, which is beneficial to silk screen printing of Snowflake UV ink. The addition of defoamer and leveling agent can improve the snowflake effect and improve the flexibility and hardness of the coating.
本发明中，通过对机器、油墨的改良性能，保证油墨一致的涂布厚度和有足够的UV紫外光照射强度，油墨固化速度快、开花效果佳、附着力好、低气味、抗拉好、柔韧性、耐折叠冲压等性能。实现提高丝印物的数量和高质量的印品，减少生产蹭脏、降低产品不良率现状。达到质量稳定、品质提升，追求精细的表面视觉、触感效果。In the present invention, by improving the performance of the machine and the ink, the consistent coating thickness of the ink and sufficient UV ultraviolet irradiation intensity are ensured, the ink curing speed is fast, the flowering effect is good, the adhesion is good, the odor is low, and the tensile strength is good. Flexibility, resistance to folding and stamping, etc. To increase the number of silk-screened materials and high-quality printed products, reduce production smudges, and reduce the current status of product defect rates. To achieve stable quality, improve quality, and pursue fine surface visual and tactile effects.
在本发明的另一个实施例中，在所述步骤S200中，丝印所述雪花UV油墨时，采用300～400目的聚酯纱网版，控制刮刀的力度为29～30N、刮刀的角度为15～18°以及刮刀的速度为2400～2500s/h。本实施例中，在上述的参数设计，可以保证高效率高质量地对承印物完成雪花UV油墨的丝印。即在控制刮刀的力度在29～30N范围内，结合刮刀的角度在15～18°范围内，以及结合刮刀的速度在2400～2500s/h范围内，可以确保在承印物上丝印出的雪花UV油墨厚度均匀，不会出现鼓包、气泡等的问题，提高质量，并且不会在单件承印物上花费过多的时间，相应地保证了生产效率。In another embodiment of the present invention, in the step S200, when silk-screening the snowflake UV ink, a 300-400 mesh polyester gauze screen is used, the strength of the control blade is 29-30N, and the angle of the blade is 15 ~18° and the speed of the scraper is 2400-2500 s/h. In this embodiment, the above parameter design can ensure that the silk screen printing of the snowflake UV ink can be completed on the substrate with high efficiency and high quality. That is, when the strength of the control scraper is within the range of 29-30N, the angle of the combined scraper is within the range of 15-18°, and the speed of the combined scraper is within the range of 2400-2500s/h, it can ensure that the snowflake UV screen printed on the substrate can be guaranteed. The ink thickness is uniform, there will be no problems such as bulging, air bubbles, etc., the quality is improved, and it will not spend too much time on a single piece of substrate, thus ensuring the production efficiency accordingly.
在本发明的另一个实施例中，在所述步骤S100中，传送的所述承印物的表面张力的达因值为≥36。通过本发明实施例的方法对雪花UV油墨进行丝印固化可以降低对承印物的表面张力的达因值的要求，即承印物的表面张力的达因值在36以上即可，能够实现更多承印物种类的雪花UV油墨的丝印固化。In another embodiment of the present invention, in the step S100, the dyne value of the surface tension of the conveyed substrate is ≥36. Screen printing and curing the snowflake UV ink by the method of the embodiment of the present invention can reduce the requirement for the dyne value of the surface tension of the substrate, that is, the dyne value of the surface tension of the substrate can be above 36, which can realize more printing Silkscreen curing of species-type Snowflake UV inks.
进一步地，在步骤S300之后，还包括步骤S400，对完成固化的所述承印物进行收集。在回收过程中，采用CCD摄像装置对承印物上固化的雪花UV油墨进行拍摄判断，判断是否符合标准要求，对于不符合要求的承印物予以剔除。Further, after step S300, step S400 is also included, collecting the solidified substrate. During the recycling process, a CCD camera is used to photograph the snowflake UV ink solidified on the substrate to determine whether it meets the standard requirements, and the substrates that do not meet the requirements are rejected.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.
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