WO2024093155A1 - 无底纸热敏标签打印方法 - Google Patents

无底纸热敏标签打印方法 Download PDF

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WO2024093155A1
WO2024093155A1 PCT/CN2023/088938 CN2023088938W WO2024093155A1 WO 2024093155 A1 WO2024093155 A1 WO 2024093155A1 CN 2023088938 W CN2023088938 W CN 2023088938W WO 2024093155 A1 WO2024093155 A1 WO 2024093155A1
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paper
thermal
printing
label
coating
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PCT/CN2023/088938
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French (fr)
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曲立军
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东莞市新唛标签制品有限公司
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    • 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
    • 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
    • B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D187/00—Coating compositions based on unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
    • C09D187/005—Block or graft polymers not provided for in groups C09D101/00 - C09D185/04

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  • the present application belongs to the field of smart cities, and relates to the technical field of thermal paper linerless labels, specifically to a linerless thermal label printing method.
  • Label paper consists of two parts: label and release paper. During use, the information is printed on the label paper through a printer, and then the label is peeled off the backing paper and pasted on the packaging surface. The remaining release paper is treated as waste. Due to the extremely developed current scientific and technological information, label printers are widely used, especially in the logistics industry. In 2019 alone, my country has produced 63.52 billion express deliveries. Such a large application also generates a large amount of release waste paper when using traditional label paper. Under the current national policy of energy conservation and emission reduction, label paper manufacturers have worked hard to develop linerless labels. Compared with traditional label paper, linerless labels directly roll the glued label paper into rolls. After the label is printed, it can be directly pasted on the packaging box, which not only saves the material of the liner, but also reduces the cost of label paper.
  • thermal paper linerless labels are highly sticky, and two adjacent thermal paper linerless labels are easily adhered to each other.
  • thermal paper linerless labels are also easily adhered to the inner wall or surface of the thermal paper printer, causing the entire printing work to be terminated, affecting the printing efficiency.
  • the existing thermal paper is used for label printing, if it deviates, it will also cause the printed font to deviate, affecting the printing quality. Therefore, a linerless thermal label printing method is proposed.
  • the purpose of the present application is to provide a method for printing linerless thermal labels to solve the problems raised in the above-mentioned background technology, that is, some thermal paper linerless labels have strong adhesive backing, and two adjacent thermal paper linerless labels are easy to stick to each other.
  • the thermal paper linerless labels are also easy to stick to the inner wall or surface of the thermal paper printer, resulting in the termination of the entire printing work and affecting the printing efficiency.
  • the existing thermal paper is used for label printing, if it is offset, it will also cause the printed font to be offset, affecting the printing quality.
  • a linerless thermal label printing method comprising the following steps:
  • S1 coating an anti-seepage agent, coating the paper anti-seepage agent on the upper surface or the lower surface of the thermal paper by a coating machine;
  • S301 coating an anti-stick coating on the inner wall, the printing table, and the guide roller of the thermal label printer;
  • S303 Open the print head module, hold the print head module with one hand to prevent it from falling, pass the label under the print head module, pull the label out from the label guide with the other hand, and then close the print head module downward;
  • a light source and a photoresistor array for receiving the light source are arranged in the paper roll bin of the thermal label printer, and the principle is to obtain a distribution image of the reflected light after the light emitted by the light source is reflected by the paper roll in the paper bin through the photoresistor array;
  • the placement bin By placing the thermal paper in a placement bin of a thermal label printer, the placement bin is provided with a paper dust collector, a light source and a photoresistor array for receiving the light source.
  • the surface of the paper is dusted during the unwinding process, so that the printed content is clearer.
  • the photoresistor array is used to obtain a distribution image of the reflected light after the light emitted by the light source is reflected by the paper roll in the paper bin.
  • the thermal paper is identified by the intensity of the reflected light in the photoresistor array to determine the type of paper. Then, the boundary lines of each strong light area on the distribution image are predicted by setting the intensity change value in advance.
  • the distance and width between adjacent label papers are obtained by the boundary lines of each strong light area.
  • the gap distance between adjacent thermal papers, the distance between adjacent label papers and their own width are used to position the thermal paper.
  • the upper surface or lower surface of the thermal paper is printed by the thermal head in the thermal label printer.
  • Specific printing content is set on the thermal label printer, and the upper surface or lower surface of the thermal paper is printed by the printing module of the thermal printer, so that the printing position is more accurate and will not be offset.
  • FIG1 is a flow chart of the present application.
  • the method for printing a linerless thermal label includes the following steps:
  • S1 coating an anti-seepage agent, coating the paper anti-seepage agent on the upper surface or the lower surface of the thermal paper by a coating machine;
  • S301 coating an anti-stick coating on the inner wall, the printing table, and the guide roller of the thermal label printer;
  • S303 Open the print head module, hold the print head module with one hand to prevent it from falling, pass the label under the print head module, pull the label out from the label guide with the other hand, and then close the print head module downward;
  • a light source and a photoresistor array for receiving the light source are arranged in the paper roll bin of the thermal label printer, and the principle is to obtain a distribution image of the reflected light after the light emitted by the light source is reflected by the paper roll in the paper bin through the photoresistor array;
  • a water-silicone oil layer is evenly coated on the surface of the printed layer by a coating machine, and then the water-silicone oil layer is dried by a hot air drying device, and a non-stick coating is coated on the surface of the dried water-silicone oil layer, and then the rolled thermal paper is cut into set sizes according to needs by a paper cutting device, and hot melt adhesive is coated on the bottom of the cut thermal paper to produce a thermal paper baseless label.
  • a paper dust collector is provided in the storage bin of the thermal label printer to remove dust from the upper and lower surfaces of the thermal paper.
  • the principle of analyzing and locating the position of the paper in S306 is to predict the boundary lines of each strong light area on the distribution image by setting the intensity change value in advance, and then obtain the distance and width between adjacent label papers through the boundary lines of each strong light area, and finally use the gap distance between adjacent thermal papers, the distance between adjacent label papers and their own width to locate the thermal paper.
  • the anti-stick coating in step S6 is composed of modified organic resin, diluent, isocyanate curing agent, filler, leveling agent and defoaming agent.
  • the modified organic resin preparation method comprises the following steps: adding organic silicon monomer, glycidyl methacrylate, styrene and butyl acrylate into deionized water for emulsification, adding an emulsifier and an initiator before emulsification, filtering after the reaction is completed to obtain organic silicon modified acrylic resin, adding modified nano silicon dioxide and organic silicon modified acrylic resin into a toluene solvent, and then adding a catalyst for reaction to obtain the modified organic resin.
  • the preparation method of the modified nano-silica comprises the following steps: firstly subjecting the nano-silica to hydroxylation pretreatment, and then utilizing the epoxy groups in the epoxy cage-shaped polysilsesquioxane to react with the nano-silica and the hydroxyl groups in N-methyl-2-hydroxyethylamine to obtain the modified nano-silica.
  • the thermal paper coated with the anti-seepage agent is rolled up, and the rolled thermal paper is placed in the placement bin of the thermal label printer.
  • the placement bin is equipped with a paper dust collector, a light source, and a photoresistor array for receiving the light source.
  • the surface of the paper is dusted during the unwinding process, making the printed content clearer.
  • the light emitted by the light source is obtained through the photoresistor array and passed through the paper
  • the distribution image of the reflected light after the paper roll in the warehouse is reflected.
  • the thermal paper is identified by the intensity of the reflected light in the photoresistor array to determine the type of paper.
  • the boundary lines of each strong light area on the distribution image are predicted by setting the intensity change value in advance.
  • the distance and width between adjacent label papers are obtained through the boundary lines of each strong light area.
  • the gap distance between adjacent thermal papers, the distance between adjacent label papers and their own width are used to position the thermal paper. According to the positioning position of the paper, the thermal head in the thermal label printer prints on the upper or lower surface of the thermal paper on the thermal label.
  • the specific printing content is set on the label printer, and the upper surface or the lower surface of the thermal paper is printed by the printing module of the thermal printer, so that the printing position is more accurate and will not be offset.
  • the water silicone oil layer is evenly coated on the surface of the printed layer by a coating machine, and the water silicone oil layer is dried by a hot air drying device, and then an anti-stick coating is coated on the surface of the water silicone oil layer.
  • the anti-stick coating is prepared by first pre-treating the nano-silicon dioxide with hydroxyl groups in the epoxy cage-shaped polysilsesquioxane and reacting with the hydroxyl groups in the nano-silicon dioxide and N-methyl-2-hydroxyethylamine to obtain a modified Nano silicon dioxide is then grafted onto the silicone-modified acrylic resin to obtain a modified organic resin.
  • the modified organic resin, diluent, curing agent, filler, leveling agent and defoaming agent are evenly mixed and sprayed evenly on the surface of the water silicone oil layer and the outer surface and inner wall of the thermal label printer, thereby reducing the adhesion of labels coated with hot melt adhesive at the bottom, and also avoiding the adhesion of the bottomless thermal label to the inner wall or surface of the thermal label printer during printing, affecting the printing effect.
  • the model of the thermal label printer is: DL-888B (NEW).

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Abstract

一种无底纸热敏标签打印方法，包括以下步骤：涂覆防渗剂，在热敏纸的上表面或下表面通过涂布机涂覆纸张防渗剂；热敏纸打印，在热敏标签打印机上设定特定的打印内容，通过热敏打印机的印刷模块对热敏纸的上表面或下表面进行打印，形成打印层；涂覆水硅油层，通过涂布机在打印层的表面均匀涂覆水硅油层；干燥，通过热风干燥装置对水硅油层进行干燥；涂覆防粘涂层，在干燥后的水硅油层的表面涂覆防粘涂层；该打印方法能够减少底部涂覆有热熔胶的标签相互粘连，也能避免打印的过程中无底纸热敏标签对热敏标签打印机的内壁或表面的粘连。

Description

无底纸热敏标签打印方法
本申请要求于_2022_年_11_月_02_日提交中国专利局、申请号为202211363873.X_，发明名称为“无底纸热敏标签打印方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于智慧城市领域，本申请涉及热敏纸无底纸标签技术领域，具体为无底纸热敏标签打印方法。
背景技术
传统标签纸都由标签和离型底纸两部分组成，使用中通过打印机将信息打印在标签纸上，再将标签剥离底纸后贴在包装表面，剩余的离型底纸作为废物处理。由于当前科技信息极度发达，标签打印机得到广泛使用，尤其是物流行业，仅在2019年我国已产生635.2亿件快递，如此庞大的应用，在使用传统标签纸时也相应产生大量的离型废纸。在当前国家节能减排大政方针下，标签纸生产企业已奋力研发出无底纸标签。相对于传统标签纸，无底纸标签直接将涂胶的标签纸成卷，标签打印完成后可直接贴在包装箱，不但节省了底纸的材料，同时降低了标签纸的成本。
但发明人意识到，现有的热敏纸无底纸标签背胶粘性强，相邻两个热敏纸无底标签之间容易粘附，热敏纸无底纸标签在进行打印时，也容易粘附在热敏纸打印机的内壁或表面，导致整个打印工作终止，影响打印的效率，且现有的热敏纸在进行标签打印时，若出现偏移，也会导致打印字体的偏移，影响打印的质量，因此提出无底纸热敏标签打印方法。
发明内容
本申请的目的在于提供无底纸热敏标签打印方法，以解决上述背景技术中提出的有的热敏纸无底纸标签背胶粘性强，相邻两个热敏纸无底标签之间容易粘附，热敏纸无底纸标签在进行打印时，也容易粘附在热敏纸打印机的内壁或表面，导致整个打印工作终止，影响打印的效率，且现有的热敏纸在进行标签打印时，若出现偏移，也会导致打印字体的偏移，影响打印的质量的问题。
为实现上述目的，本申请提供如下技术方案：无底纸热敏标签打印方法，包括以下步骤：
S1：涂覆防渗剂，在热敏纸的上表面或下表面通过涂布机涂覆纸张防渗剂；
S2：初始热敏纸收卷，将涂有防渗剂的热敏纸进行收卷，并将收卷后的热敏纸放置到热敏标签打印机的放置仓内；
S3：热敏纸打印，在热敏标签打印机上设定打印内容，通过热敏打印机的印刷模块对热敏纸的上表面或下表面进行打印，形成打印层；热敏纸打印的具体步骤为：
S301：在热敏标签打印机的内壁和承印台、以及引导辊均涂覆防粘涂层；
S302：打开热敏标签打印机上盖取出纸卷架，然后把纸卷由左置右套入纸卷架，套好后放入到纸卷仓并将将纸卷向左端靠齐；
S303：打开打印头模组，一手托住打印头摸组避免掉落，将标签穿过打印头摸组下，另一只手从标签引导器中拉出标签，然后向下合上打印头摸组；
S304：然后在热敏标签打印机纸卷仓里设置光源和对光源进行接收的光敏电阻阵列，其原理为通过光敏电阻阵列获取光源发射的光线经纸仓内纸卷反射后的反射光的分布图像；
S305：通过光敏电阻阵列中反射光的强度对热敏纸进行识别；
S306：通过分布图像计算对纸张的位置进行分析定位；
S307：然后根据纸张的位置，通过热敏标签打印机内的热敏头对热敏纸的上表面或下表面进行打印。
与现有技术相比，本申请的有益效果是：
(1)通过将先对纳米二氧化硅进行羟基化预处理，利用环氧基笼形聚倍半硅氧烷中的环氧基团与纳米二氧化硅以及N-甲基-2-羟基乙胺中的羟基进行反应，得到改性纳米二氧化硅，再将改性纳米二氧化硅接枝在有机硅改性丙烯酸树脂上，得到改性有机树脂，最后将改性有机树脂、稀释剂、固化剂、填料、流平剂和消泡剂混合均匀制备而成的防粘涂层，均匀的喷覆在水硅油层的表面以及热敏标签打印机的外表面以及内壁，从而可以减少底部涂覆有热熔胶的标签相互粘连，也能避免打印的过程中无底纸热敏标签对热敏标签打印机的内壁或表面进行粘连，影响打印的效果；
(2)通过将热敏纸放置到热敏标签打印机的放置仓内，放置仓内有纸张除尘器、光源和对光源进行接收的光敏电阻阵列，一方面使得放卷的过程中对纸张的表面进行除尘，使得打印的内容更加清晰，另一方面通过光敏电阻阵列获取光源发射的光线经纸仓内纸卷反射后的反射光的分布图像，通过光敏电阻阵列中反射光的强度对热敏纸进行识别，判断纸张的类型，然后通过提前设定强度变化值预判分布图像上各个强光区域的分界线，再通过各个强光区域的分界线，获得相邻的标签纸之间的距离和宽度最后利用相邻热敏纸之间的间隙距离，以及相邻的标签纸之间的距离和自身的宽度对热敏纸进行定位，根据纸张的定位位置，通过热敏标签打印机内的热敏头对热敏纸的上表面或下表面进行打印在热敏标签打印机上设定特定的打印内容，通过热敏打印机的印刷模块对热敏纸的上表面或下表面进行打印，使得打印的位置更加精确，不会发生偏移。
附图说明
图1为本申请的流程图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1，无底纸热敏标签打印方法，包括以下步骤：
S1：涂覆防渗剂，在热敏纸的上表面或下表面通过涂布机涂覆纸张防渗剂；
S2：初始热敏纸收卷，将涂有防渗剂的热敏纸进行收卷，并将收卷后的热敏纸放置到 热敏标签打印机的放置仓内；
S3：热敏纸打印，在热敏标签打印机上设定打印内容，通过热敏打印机的印刷模块对热敏纸的上表面或下表面进行打印，形成打印层；热敏纸打印的具体步骤为：
S301：在热敏标签打印机的内壁和承印台、以及引导辊均涂覆防粘涂层；
S302：打开热敏标签打印机上盖取出纸卷架，然后把纸卷由左置右套入纸卷架，套好后放入到纸卷仓并将将纸卷向左端靠齐；
S303：打开打印头模组，一手托住打印头摸组避免掉落，将标签穿过打印头摸组下，另一只手从标签引导器中拉出标签，然后向下合上打印头摸组；
S304：然后在热敏标签打印机纸卷仓里设置光源和对光源进行接收的光敏电阻阵列，其原理为通过光敏电阻阵列获取光源发射的光线经纸仓内纸卷反射后的反射光的分布图像；
S305：通过光敏电阻阵列中反射光的强度对热敏纸进行识别；
S306：通过分布图像计算对纸张的位置进行分析定位；
S307：然后根据纸张的位置，通过热敏标签打印机内的热敏头对热敏纸的上表面或下表面进行打印。
所述S307步骤中对热敏纸的上表面或下表面进行打印完成后，通过涂布机在打印层的表面均匀涂覆水硅油层，接着通过热风干燥装置对水硅油层进行干燥，在干燥后的水硅油层的表面涂覆防粘涂层，裁切，通过纸张切割设备对收卷后的热敏纸依据需求分切成设定尺寸，在裁切后的热敏纸的底部涂覆热熔胶，从而制成热敏纸无底纸标签。
所述S2步骤中热敏标签打印机的放置仓内设置有纸张除尘器，对热敏纸的上表面和下表面进行除尘。
所述S306中纸张的位置进行分析定位的原理为，通过提前设定强度变化值预判分布图像上各个强光区域的分界线，再通过各个强光区域的分界线，获得相邻的标签纸之间的距离和宽度最后利用相邻热敏纸之间的间隙距离，以及相邻的所述标签纸之间的距离和自身的宽度对热敏纸进行定位。
所述S6步骤中的防粘涂层由改性有机树脂、稀释剂、异氰酸酯固化剂、填料、流平剂和消泡剂组成。
所述改性有机树脂制备方法为：将有机硅单体、甲基丙烯酸缩水甘油酯、苯乙烯、丙烯酸丁酯加入到去离子水中进水乳化，在乳化前加入乳化剂和引发剂，待反应完成后，过滤，即得到有机硅改性丙烯酸树脂，再将改性纳米二氧化硅和有机硅改性丙烯酸树脂加入到甲苯溶剂中，然后加入催化剂进行反应，即得到改性有机树脂。
所述改性纳米二氧化硅的制备方法为先对纳米二氧化硅进行羟基化预处理，利用环氧基笼形聚倍半硅氧烷中的环氧基团与纳米二氧化硅以及N-甲基-2-羟基乙胺中的羟基进行反应，得到改性纳米二氧化硅。
所述环氧基笼形聚倍半硅氧烷的结构通式为(SiO1.5)8R1nR2 8-n，其中R1独立的选自γ-(2,3-环氧丙氧基)丙基、β-(3,4-环氧环己基)乙基或环氧乙基，R2独立的选自乙烯基、甲基、丙基、异丁基或苯基，n＝4、5、6、7或8。
具体使用时，首先涂覆防渗剂，在热敏纸的上表面或下表面通过涂布机涂覆纸张防渗剂，从而对热敏纸进行防护，防止打印的过程中墨水渗透到热敏纸的内层，然后将涂有防渗剂的热敏纸进行收卷，并将收卷后的热敏纸放置到热敏标签打印机的放置仓内，放置仓内有纸张除尘器、光源和对光源进行接收的光敏电阻阵列，一方面使得放卷的过程中对纸张的表面进行除尘，使得打印的内容更加清晰，另一方面通过光敏电阻阵列获取光源发射的光线经纸仓内纸卷反射后的反射光的分布图像，通过光敏电阻阵列中反射光的强度对热敏纸进行识别，判断纸张的类型，然后通过提前设定强度变化值预判分布图像上各个强光区域的分界线，再通过各个强光区域的分界线，获得相邻的标签纸之间的距离和宽度最后利用相邻热敏纸之间的间隙距离，以及相邻的标签纸之间的距离和自身的宽度对热敏纸进行定位，根据纸张的定位位置，通过热敏标签打印机内的热敏头对热敏纸的上表面或下表面进行打印在热敏标签打印机上设定特定的打印内容，通过热敏打印机的印刷模块对热敏纸的上表面或下表面进行打印，使得打印的位置更加精确，不会发生偏移，接着通过涂布机在打印层的表面均匀涂覆水硅油层，并利用通过热风干燥装置对水硅油层进行干燥，再在水硅油层的表面涂覆防粘涂层，防粘涂层是先对纳米二氧化硅进行羟基化预处理，利用环氧基笼形聚倍半硅氧烷中的环氧基团与纳米二氧化硅以及N-甲基-2-羟基乙胺中的羟基进行反应，得到改性纳米二氧化硅，再将改性纳米二氧化硅接枝在有机硅改性丙烯酸树脂上，得到改性有机树脂，最后将改性有机树脂、稀释剂、固化剂、填料、流平剂和消泡剂混合均匀制成，均匀的喷撒在水硅油层的表面以及热敏标签打印机的外表面以及内壁，从而可以减少底部涂覆有热熔胶的标签相互粘连，也能避免打印的过程中无底纸热敏标签对热敏标签打印机的内壁或表面进行粘连，影响打印的效果，敏标签打印机的型号为：DL-888B(NEW)型。
尽管参照前述实施例对本申请进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (8)

  1. 无底纸热敏标签打印方法，其中：包括以下步骤：
    S1：涂覆防渗剂，在热敏纸的上表面或下表面通过涂布机涂覆纸张防渗剂；
    S2：初始热敏纸收卷，将涂有防渗剂的热敏纸进行收卷，并将收卷后的热敏纸放置到热敏标签打印机的放置仓内；
    S3：热敏纸打印，在热敏标签打印机上设定打印内容，通过热敏打印机的印刷模块对热敏纸的上表面或下表面进行打印，形成打印层；热敏纸打印的具体步骤为：
    S301：在热敏标签打印机的内壁和承印台、以及引导辊均涂覆防粘涂层；
    S302：打开热敏标签打印机上盖取出纸卷架，然后把纸卷由左置右套入纸卷架，套好后放入到纸卷仓并将将纸卷向左端靠齐；
    S303：打开打印头模组，一手托住打印头摸组避免掉落，将标签穿过打印头摸组下，另一只手从标签引导器中拉出标签，然后向下合上打印头摸组；
    S304：然后在热敏标签打印机纸卷仓里设置光源和对光源进行接收的光敏电阻阵列，其原理为通过光敏电阻阵列获取光源发射的光线经纸仓内纸卷反射后的反射光的分布图像；
    S305：通过光敏电阻阵列中反射光的强度对热敏纸进行识别；
    S306：通过分布图像计算对纸张的位置进行分析定位；
    S307：然后根据纸张的位置，通过热敏标签打印机内的热敏头对热敏纸的上表面或下表面进行打印。
  2. 根据权利要求1所述的无底纸热敏标签打印方法，其中：所述S307步骤中对热敏纸的上表面或下表面进行打印完成后，通过涂布机在打印层的表面均匀涂覆水硅油层，接着通过热风干燥装置对水硅油层进行干燥，在干燥后的水硅油层的表面涂覆防粘涂层，裁切，通过纸张切割设备对收卷后的热敏纸依据需求分切成设定尺寸，在裁切后的热敏纸的底部涂覆热熔胶，从而制成热敏纸无底纸标签。
  3. 根据权利要求1所述的无底纸热敏标签打印方法，其中：所述S2步骤中热敏标签打印机的放置仓内设置有纸张除尘器，对热敏纸的上表面和下表面进行除尘。
  4. 根据权利要求1所述的无底纸热敏标签打印方法，其中：所述S306中纸张的位置进行分析定位的原理为，通过提前设定强度变化值预判分布图像上各个强光区域的分界线，再通过各个强光区域的分界线，获得相邻的标签纸之间的距离和宽度最后利用相邻热敏纸之间的间隙距离，以及相邻的所述标签纸之间的距离和自身的宽度对热敏纸进行定位。
  5. 根据权利要求1所述的无底纸热敏标签打印方法，其中：所述S6步骤中的防粘涂层由改性有机树脂、稀释剂、异氰酸酯固化剂、填料、流平剂和消泡剂组成。
  6. 根据权利要求5所述的无底纸热敏标签打印方法，其中：所述改性有机树脂制备方法为：将有机硅单体、甲基丙烯酸缩水甘油酯、苯乙烯、丙烯酸丁酯加入到去离子水中进水乳化，在乳化前加入乳化剂和引发剂，待反应完成后，过滤，即得到有机硅改性丙烯酸树脂，再将改性纳米二氧化硅和有机硅改性丙烯酸树脂加入到甲苯溶剂中，然后加入催化剂进行反应，即得到改性有机树脂。
  7. 根据权利要求6所述的无底纸热敏标签打印方法，其中：所述改性纳米二氧化硅的制备方法为先对纳米二氧化硅进行羟基化预处理，利用环氧基笼形聚倍半硅氧烷中的环氧基团与纳米二氧化硅以及N-甲基-2-羟基乙胺中的羟基进行反应，得到改性纳米二氧化硅。
  8. 根据权利要求7所述的无底纸热敏标签打印方法，其中：所述环氧基笼形聚倍半硅氧烷的结构通式为(SiO1.5)8R1nR2 8-n，其中R1独立的选自γ-(2,3-环氧丙氧基)丙基、β-(3,4-环氧环己基)乙基或环氧乙基，R2独立的选自乙烯基、甲基、丙基、异丁基或苯基，n＝4、5、6、7或8。
PCT/CN2023/088938 2022-11-02 2023-04-18 无底纸热敏标签打印方法 WO2024093155A1 (zh)

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