WO2022241966A1 - 一种包装用内衬纸的生产工艺 - Google Patents

一种包装用内衬纸的生产工艺 Download PDF

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WO2022241966A1
WO2022241966A1 PCT/CN2021/114537 CN2021114537W WO2022241966A1 WO 2022241966 A1 WO2022241966 A1 WO 2022241966A1 CN 2021114537 W CN2021114537 W CN 2021114537W WO 2022241966 A1 WO2022241966 A1 WO 2022241966A1
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paper
silver
production process
film
micro
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PCT/CN2021/114537
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English (en)
French (fr)
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俞娟
朱伟
濮厚庆
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南京金陵金箔集团股份有限公司
南京金箔包装材料集团股份有限公司
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Publication of WO2022241966A1 publication Critical patent/WO2022241966A1/zh

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • B44C1/1729—Hot stamping techniques
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/02—Patterned paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply

Definitions

  • the invention relates to the technical field of packaging, in particular to a production process of inner lining paper for packaging.
  • the transfer bottom paper used in packaging materials on the market is produced by first coating the transfer coating and then vacuum aluminum plating.
  • the transfer backing paper produced by this process has good metallic luster, which improves the aesthetics of packaging materials.
  • this kind of transfer backing paper has disadvantages, that is, under different viewing angles, the paper surface will appear black; this phenomenon greatly affects the aesthetics of the transfer backing paper and subsequent printing effects.
  • the traditional hot stamping technology mainly uses engraving technology or corrosion to make hot stamping plates based on the hot stamping pattern, and then transfers the pattern to the substrate under certain process conditions.
  • This technology can only hot stamp flat patterns, which is too Monotonous, poor visual effects for the public, difficult to deepen the public's impression, poor market competitiveness.
  • the present invention proposes a production process of the inner liner paper for packaging.
  • a silver-white base paper with a 360° full-view silver-white appearance effect is made from a customized molded file.
  • micro-engraving embossing technology to print three-dimensional graphics to enhance the visual effect.
  • the present invention adopts the following solutions, including:
  • a production process for packaging lining paper comprising the following steps:
  • the PET base film is molded and aluminum-plated to make a transfer film, and the PET base film is molded with a customized molding file, and then aluminum-plated under vacuum conditions to make a transfer film;
  • the transfer film is compounded with the paper front of the base paper, and the base paper and the transfer film are compounded on the compound machine, wherein the base paper is the lining base paper;
  • the PET base film is peeled off to make a silver-white transfer backing paper, and the transfer film and the base paper are combined and placed in the curing room for processing, and then the PET base film is peeled off on a peeling machine to make a silver-white transfer backing paper;
  • the silver-white transfer bottom paper is coated on the back to make a porcelain-like layer, and the silver-white transfer bottom paper is coated with a coating machine to form a coating film, and then the coating film is dried to form a porcelain-like layer;
  • the finished product is embossed with a micro-engraving embossing plate, and finally cut according to the designed size and style.
  • the molded file is a component formed by directly engraving optical images and texts with a micro-nano structure by using photolithography technology; when aluminizing, the wire feeding speed is 720 ⁇ 100mm/min, The unwinding tension of the film is 115 ⁇ 20N, and the winding tension is 45 ⁇ 15N.
  • the molded file is an element carved out by laser lithography technology, and the laser engraved on the molded file has an optical pattern with a micro-nano structure; during aluminum plating, the wire feeding speed is 720 ⁇ 100mm/min, the unwinding tension of the film is 115 ⁇ 20N, and the winding tension is 45 ⁇ 15N.
  • the silver-white transfer backing paper has optical graphics with micro-nano structure, and the optical graphics on the silver-white transfer backing paper have both positive images and reverse images.
  • step (2) during compounding, the machine speed of the compound machine is controlled at 110-130m/min, and the compound machine is equipped with four sets of ovens, and the temperature of the four sets of ovens is controlled at 65-100°C.
  • step (3) the curing room is placed for 12-24 hours, the temperature of the curing room is controlled at 95°C ⁇ 5°C; the peeling speed of the stripping machine is controlled at 100 ⁇ 10m/min.
  • the porcelain-like layer is coated with porcelain-like ink or porcelain-like paint, and 2%-15% of zirconia is added to the porcelain-like ink or porcelain-like paint; when coating, The pressure of the coating roller is 0.5 ⁇ 0.1MPa, the machine speed of the coating machine is 90-95m/min, the viscosity of the coating is 13 ⁇ 2S, and the winding tension of the coated silver-white transfer backing paper is 0.2 ⁇ 0.05MPa.
  • the amount of glue is 1.0-1.2g/m2; the coating film is dried in 4 temperature zones, the temperature of the 4 temperature zones is 100°C ⁇ 10°C, 125°C ⁇ 10°C, 130°C ⁇ 10°C, 105°C ⁇ 10°C.
  • the hot stamping temperature is 160-170°C
  • the hardness of the rubber roller is 80-90A
  • the pressure is 0.6-0.8MPa
  • the machine speed is 40-50m/min.
  • the micro-engraving embossing plate is carved by laser direct engraving technology, and the graphics and blanks are controlled by data monitoring to control the precision and accuracy during engraving; when embossing, the machine speed is 110-120m/min, the unwinding tension is 15-20N, the winding tension is 250-280N, and the winding air pressure is 0.1-0.25kg/cm2.
  • the engraving lines of the micro-engraving embossing plate are 2-5 silk lines thick.
  • the plate roller is plated with chrome instead of nickel to increase smoothness, wear resistance and corrosion resistance.
  • the present invention has the following beneficial effects:
  • the optical pattern of the micro-nano structure on the molding file also can be formed in PET base film
  • the formed silver-white transfer backing paper will also form micro-nano structure optical graphics, and the optical graphics on the silver-white transfer backing paper have both positive and reverse images, so the silver-white transfer backing
  • Both the front and the back of the paper are optical graphics with micro-nano structure, and the micro-nano structure is used to control the diffraction and propagation of light, so that the silver-white appearance of the silver-white transfer backing paper is not limited by the viewing angle, showing a 360° full-view silver-white Appearance effect, that is, to avoid the phenomenon of blackening of the paper surface due to angle changes;
  • the imitation porcelain layer is printed or coated on the back of the silver-white transfer base paper, so that the product has a brighter effect of glaze;
  • the micro-carved embossing technology improves the hot stamping effect on the surface of the paper from a plane pattern to a three-dimensional pattern, which has a specific geometric shape, brings visual impact to consumption, and realizes the anti-counterfeiting performance of the product And high added value, enhance the market competitiveness of products.
  • Fig. 1 is a flow chart of the production process of the inner liner paper according to the present invention.
  • Fig. 2 is a schematic cross-sectional view of the inner lining paper produced by the production process of the inner lining paper according to the present invention.
  • a production process of inner lining paper for packaging which is carried out in the following steps:
  • the PET base film is molded in a molding machine with a customized molding file, and then vacuum-plated on an aluminum-coating machine to make a transfer film.
  • the unwinding tension of the film is 115 ⁇ 20N, and the winding tension is 45 ⁇ 25N, the tension roller is 65 ⁇ 15N, and the wire feeding speed is 720mm/min;
  • the transfer film and the front side of the paper are compounded with starch glue on a compound machine to make a silver-white transfer bottom paper.
  • the machine speed is controlled at 110m/min, and the temperatures of the four sets of ovens are respectively set at 70°C ⁇ 10°C, 80°C ⁇ 10°C, 80°C ⁇ 10°C and 70°C ⁇ 10°C;
  • the front side of the silver-white transfer backing paper is hot-stamped with anodized aluminum.
  • the hot-stamping temperature is 160°C
  • the hardness of the rubber roller is 80A
  • the pressure is 0.6MPa
  • the machine speed is 40m/min.
  • emboss with micro-engraving embossing plate After hot stamping, emboss with micro-engraving embossing plate to make finished products.
  • the machine speed is 110m/min
  • the unwinding tension is 15N
  • the winding tension is 250N
  • the winding air pressure is 0.1-0.25kg/cm 2.
  • a production process of inner lining paper for packaging which is carried out in the following steps:
  • the PET base film is molded in a molding machine with a customized molding file, and then vacuum-plated on an aluminum-coating machine to make a transfer film.
  • the unwinding tension of the film is 115 ⁇ 20N, and the winding tension is 45 ⁇ 25N, the tension roller is 65 ⁇ 15N, and the wire feeding speed is 715mm/min;
  • the transfer film and the front side of the paper are compounded with starch glue on a compound machine to make a silver-white transfer bottom paper.
  • the machine speed is controlled at 115m/min, and the temperatures of the four sets of ovens are set at 70°C ⁇ 10°C, 80°C ⁇ 10°C, 80°C ⁇ 10°C and 70°C ⁇ 10°C;
  • the front side of the silver-white transfer backing paper is hot-stamped with anodized aluminum.
  • the hot-stamping temperature is 170°C
  • the hardness of the rubber roller is 90A
  • the pressure is 0.8MPa
  • the machine speed is 50m/min.
  • the finished product is embossed with a micro-engraving embossing plate.
  • the machine speed is 120m/min
  • the unwinding tension is 18N
  • the winding tension is 260N
  • the winding air pressure is 0.1-0.25kg/cm 2.
  • the optical picture and text of the micro-nano structure on the molding file will also be formed in PET base film, after passing through and The compounding and stripping of the original paper will also form optical graphics with micro-nano structure on the silver-white transfer backing paper, and the optical graphics on the silver-white transfer backing paper have both positive and reverse images, so the silver-white transfer backing paper
  • Both the front and the back are optical graphics with micro-nano structure, and the micro-nano structure is used to control the diffraction and propagation of light, so that the silver-white appearance of the silver-white transfer backing paper is not limited by the viewing angle, and presents a 360° full-view silver-white appearance , that is, to avoid the phenomenon of blackening of the paper surface due to angle changes;
  • the micro-engraving embossing plate is engraved by laser direct engraving technology, and the graphics and blanks are controlled by data monitoring to control the precision and accuracy; the micro-engraving embossing technology makes the surface of the paper hot stamp The effect is upgraded from a flat pattern to a three-dimensional pattern, with a specific geometric shape, which brings a visual impact to consumers, realizes the anti-counterfeiting performance and high added value of the product, and enhances the market competitiveness of the product.
  • optical graphics with micro-nano structures are formed on the silver-white transfer backing paper that is subsequently prepared, and its silver-white appearance is not limited by the viewing angle, and the inner lining paper made
  • the finished product still retains this kind of optical graphics with micro-nano structure, which also makes the three-dimensional pattern formed by the embossing of the micro-engraving embossing plate in step (6) not limited by the viewing angle, so that the three-dimensional pattern can be seen more clearly, and the display is better. three-dimensional effect.
  • the engraving line of the micro-engraving embossing plate is 2-5 silk lines thick; the micro-engraving embossing plate has chrome plated on the plate roller instead of nickel to increase smoothness, wear resistance and corrosion resistance.
  • the optical pattern of the micro-nano structure described in this implementation is periodic.

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  • Mechanical Engineering (AREA)
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Abstract

本发明公开了一种包装用内衬纸的生产工艺，包括以下步骤：PET基膜模压镀铝制成转移膜，转移膜与原纸的纸张正面进行复合，PET基膜剥离制成银白转移底纸，银白转移底纸背面涂布制成仿瓷层，银白转移底纸正面用电化铝烫印，烫印后采用微雕压纹版压纹制成成品，最后按照设计的大小尺寸样式进行分切。本发明所述内衬纸的生产工艺中，采用定制的模压文件制成360°全视角银白色外观效果的银白底纸，并且通过微雕压纹技术印刷出立体图文提升视觉效果。

Description

一种包装用内衬纸的生产工艺 技术领域
本发明涉及包装技术领域，特别涉及一种包装用内衬纸的生产工艺。
背景技术
目前市场上包装材料所用的转移底纸采用先涂布转移涂料再真空镀铝的工艺进行生产。通过此种工艺生产的转移底纸具有良好的金属光泽，提高了包装材料的美观性。然而此种转移底纸却存在缺点，即在不同的观测角度下，会出现纸面发黑的现象；这一现象较大程度影响转移底纸的美观度及后续印刷效果。
另外，传统的烫金技术主要是依据烫印图案采用雕刻技术或腐蚀方式制作出烫印版，然后在一定的工艺条件下将图案转移到承印物上，此种技术只能烫印平面图案，过于单调，给大众带来视觉效果差，难以加深大众的印象，市场竞争力差。
发明内容
为了解决上述存在的问题，本发明提出一种包装用内衬纸的生产工艺，该内衬纸的生产工艺中，采用定制的模压文件制成360°全视角银白色外观效果的银白底纸，并且通过微雕压纹技术印刷出立体图文提升视觉效果。
为了实现上述目的，本发明采用以下方案，包括：
一种包装用内衬纸的生产工艺，包括以下步骤：
(1)PET基膜模压镀铝制成转移膜，将PET基膜采用定制的模压文件进行模压，然后在真空条件下镀铝制成转移膜；
(2)转移膜与原纸的纸张正面进行复合，将原纸与转移膜在复合机上复合，其中原纸为内衬原纸；
(3)PET基膜剥离制成银白转移底纸，将转移膜与原纸复合后在熟化室放置处理，然后在剥离机上将PET基膜剥离，制成银白转移底纸；
(4)银白转移底纸背面涂布制成仿瓷层，将银白转移底纸采用涂布机进行涂布形成涂布膜，然后涂布膜经烘干形成仿瓷层；
(5)银白转移底纸正面用电化铝烫印；
(6)烫印后采用微雕压纹版压纹制成成品，最后按照设计的大小尺寸样式 进行分切。
进一步地，所述步骤(1)中：所述模压文件是利用光刻技术将具有微纳结构的光学图文直雕而成的元件；镀铝时，送丝速度为720±100mm/min，膜的放卷张力为115±20N，收卷张力为45±15N。
进一步地，所述步骤(1)中：所述模压文件是利用激光光刻技术雕刻出的元件，并且模压文件上激光雕刻出具有微纳结构的光学图文；镀铝时，送丝速度为720±100mm/min，膜的放卷张力为115±20N，收卷张力为45±15N。
又进一步地，所述银白转移底纸具有微纳结构的光学图文，并且银白转移底纸上的光学图文既有正向图像也有反向图像。
进一步地，所述步骤(2)中：复合时，复合机的机速控制在110-130m/min，且复合机设置四组烘箱，所述四组烘箱的温度控制在65-100℃。
进一步地，所述步骤(3)中：熟化室的放置时间为12-24小时，熟化室温度控制在95℃±5℃；剥离机的剥离速度控制在100±10m/min。
进一步地，所述步骤(4)中：仿瓷层为仿瓷油墨或仿瓷涂料涂布而成，且仿瓷油墨或仿瓷涂料中加入2％-15％的氧化锆；涂布时，涂布辊的压力为0.5±0.1MPa，涂布机的机速为90-95m/min，涂料粘度为13±2S，涂布银白转移底纸的收卷张力为0.2±0.05MPa，涂布干胶量为1.0-1.2g/m2；涂布膜经4个温度区烘干，所述4个温度区的温度为100℃±10℃、125℃±10℃、130℃±10℃、105℃±10℃。
进一步地，所述步骤(5)中：烫印时，烫印温度为160-170℃，胶辊硬度为80-90A，压力为0.6-0.8MPa，机速为40-50m/min。
进一步地，所述步骤(6)中：所述微雕压纹版采用激光直雕技术雕刻而成，且雕刻时图文与空白采用数据监控控制精确度与准确度；压纹时，机速为110-120m/min，放卷张力为15-20N，收卷张力为250-280N，收卷气压为0.1-0.25kg/cm2。
又进一步地，所述微雕压纹版的雕刻线为2丝-5丝线粗。
又进一步地，所述的微雕压纹版，其版辊上镀铬替代镍，以增加光洁度、耐磨性和耐腐蚀性。
本发明与现有技术相比具有以下有益效果：
1)本发明所述的内衬纸的生产工艺中，在进行PET基膜模压时，采用定制的模压文件制作，模压文件上的微纳结构的光学图文在PET基膜也会形成，在经过与原纸的复合和剥离，形成的银白转移底纸上也会形成微纳结构的光学图文，并且银白转移底纸上的光学图文既有正向图像也有反向图像，那么银白转移底纸的正面和反面均是微纳结构的光学图文，利用微纳结构控制光的衍射和传播，使银白转移底纸的银白色外观效果不受观看角度的限制，呈现360°全视角银白色外观效果，也即避免出现角度变化出现纸面发黑的现象；
2)本发明所述的内衬纸的生产工艺中，在银白转移底纸背面印刷或涂布仿瓷层，使产品更具釉面的亮丽效果；
3)本发明所述的内衬纸的生产工艺中，微雕压纹技术使纸张表面烫印效果由平面图案提升为立体图案，具有特定几何形状，带给消费之视觉冲击，实现产品的防伪性能和高附加值，提升产品的市场竞争力。
附图说明
图1为本发明所述的内衬纸的生产工艺的流程图。
图2为本发明所述的内衬纸的生产工艺的生产的内衬纸的截面示意图。
图中：1-原纸；2-胶水层；3-镀铝层；4-仿瓷层；5-烫金层；6-微雕压纹。
具体实施方式
下面将结合附图对本发明技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本发明的技术方案，因此只作为示例，而不能以此来限制本发明的保护范围。
需要注意的是，除非另有说明，本申请使用的技术术语或者科学术语应当为本发明所属领域技术人员所理解的通常意义。
如图1所示，根据图示的内衬纸生产流程进行如下实施例。
实施例1
一种包装用内衬纸的生产工艺，按以下步骤进行：
(1)将PET基膜在模压机采用定制的模压文件进行模压，然后在镀铝机上真空镀铝制成转移膜，镀铝时，膜的放卷张力为115±20N，收卷张力为45±25N，张力辊为65±15N，送丝速度为720mm/min；
(2)转移膜与纸张正面在复合机上采用淀粉胶复合，制成银白转移底纸，机速控制在110m/min，四组烘箱温度分别设置在70℃±10℃、80℃±10℃、80℃±10℃和70℃±10℃；
(3)制成银白转移底纸后，在熟化室放置12-24小时，熟化室温度控制在95℃±5℃，然后在剥离机上将PET基膜剥离，剥离速度控制在110m/min；
(4)在银白转移底纸反面先涂布一层加有氧化锆粉的仿瓷涂料作为仿瓷层底层，再涂布另一层仿瓷涂料作为仿瓷层上层，得到仿瓷层，涂布时，涂布辊的压力为0.5±0.1MPa，涂布机的机速为90m/min，涂料粘度为13±2S，涂布银白转移底纸的收卷张力为0.2±0.05MPa，涂布干胶量为1.0g/m 2，涂布膜经4个温度区烘干，分别为100℃±10℃、125℃±10℃、130℃±10℃、105℃±10℃；
(5)银白转移底纸正面再用电化铝进行烫印，烫印时，烫印温度为160℃，胶辊硬度为80A，压力为0.6MPa，机速为40m/min。
(6)烫印后采用微雕压纹版压纹制成成品，压纹时，机速为110m/min，放卷张力为15N，收卷张力为250N，收卷气压为0.1-0.25kg/cm 2，最后按照设计的大小尺寸样式进行分切。
实施例2：
一种包装用内衬纸的生产工艺，按以下步骤进行：
(1)将PET基膜在模压机采用定制的模压文件进行模压，然后在镀铝机上真空镀铝制成转移膜，镀铝时，膜的放卷张力为115±20N，收卷张力为45±25N，张力辊为65±15N，送丝速度为715mm/min；
(2)转移膜与纸张正面在复合机上采用淀粉胶复合，制成银白转移底纸，机速控制在115m/min，四组烘箱温度分别设置在70℃±10℃、80℃±10℃、80℃±10℃和70℃±10℃；
(3)制成银白转移底纸后，在熟化室放置12-24小时，熟化室温度控制在95℃±5℃，然后在剥离机上将PET基膜剥离，剥离速度控制在100m/min；
(4)在银白转移底纸反面先涂布一层加有氧化锆粉的仿瓷涂料作为仿瓷层底层，再涂布另一层仿瓷涂料作为仿瓷层上层，得到仿瓷层，涂布时，涂布辊的压力为0.5±0.1MPa，涂布机的机速为95m/min，涂料粘度为13±2S，涂布银白 转移底纸的收卷张力为0.2±0.05MPa，涂布干胶量为1.2g/m 2，涂布膜经4个温度区烘干，分别为100℃±10℃、125℃±10℃、130℃±10℃、105℃±10℃；
(5)银白转移底纸正面再用电化铝进行烫印，烫印时，烫印温度为170℃，胶辊硬度为90A，压力为0.8MPa，机速为50m/min。
(6)烫印后采用微雕压纹版压纹制成成品，压纹时，机速为120m/min，放卷张力为18N，收卷张力为260N，收卷气压为0.1-0.25kg/cm 2，最后按照设计的大小尺寸样式进行分切。
经上述实施例可制成如图2所示的内衬纸；在制备过程中，
本发明所述的内衬纸的生产工艺中，在进行PET基膜模压时，采用定制的模压文件制作，模压文件上的微纳结构的光学图文在PET基膜也会形成，在经过与原纸的复合和剥离，形成的银白转移底纸上也会形成微纳结构的光学图文，并且银白转移底纸上的光学图文既有正向图像也有反向图像，那么银白转移底纸的正面和反面均是微纳结构的光学图文，利用微纳结构控制光的衍射和传播，使银白转移底纸的银白色外观效果不受观看角度的限制，呈现360°全视角银白色外观效果，也即避免出现角度变化出现纸面发黑的现象；
另外，在银白转移底纸背面印刷或涂布仿瓷层，使产品更具釉面的亮丽效果；并且涂布仿瓷层用的仿瓷涂料中加入2％-15％的氧化锆，其作用是增加仿瓷层的瓷白效果。
在最后的步骤(6)中，所述微雕压纹版采用激光直雕技术雕刻而成，且雕刻时图文与空白采用数据监控控制精确度与准确度；微雕压纹技术使纸张表面烫印效果由平面图案提升为立体图案，具有特定几何形状，带给消费之视觉冲击，实现产品的防伪性能和高附加值，提升产品的市场竞争力。由于前述步骤中采用定制的模压文件制作使后续制得的银白转移底纸上形成具有微纳结构的光学图文，其银白色外观效果不受观看角度的限制，并且在制成的内衬纸的成品依然保有这种具有微纳结构的光学图文，这也使得步骤(6)微雕压纹版压纹形成立体图案也不受观看角度的限制，更能看清立体图案，展现更好地立体效果。所述微雕压纹版的雕刻线为2丝-5丝线粗；所述的微雕压纹版，其版辊上镀铬替代镍，以增加光洁度、耐磨性和耐腐蚀性。本实施中所述微纳结构的光学图文呈周期性。

Claims (10)

  1. 一种包装用内衬纸的生产工艺，其特征在于，包括以下步骤：
    (1)PET基膜模压镀铝制成转移膜，将PET基膜采用定制的模压文件进行模压，然后在真空条件下镀铝制成转移膜；
    (2)转移膜与原纸的纸张正面进行复合，将原纸与转移膜在复合机上复合，其中原纸为内衬原纸；
    (3)PET基膜剥离制成银白转移底纸，将转移膜与原纸复合后在熟化室放置处理，然后在剥离机上将PET基膜剥离，制成银白转移底纸；
    (4)银白转移底纸背面涂布制成仿瓷层，将银白转移底纸采用涂布机进行涂布形成涂布膜，然后涂布膜经烘干形成仿瓷层；
    (5)银白转移底纸正面用电化铝烫印；
    (6)烫印后采用微雕压纹版压纹制成成品，最后按照设计的大小尺寸样式进行分切。
  2. 根据权利要求1所述的包装用内衬纸的生产工艺，其特征在于，所述步骤(1)中：所述模压文件是利用激光光刻技术雕刻出的元件，并且模压文件上激光雕刻出具有微纳结构的光学图文；镀铝时，送丝速度为720±100mm/min，膜的放卷张力为115±20N，收卷张力为45±15N。
  3. 根据权利要求2所述的包装用内衬纸的生产工艺，其特征在于：所述模压后的制成的银白转移底纸具有微纳结构的光学图文，并且银白转移底纸上的光学图文既有正向图像也有反向图像。
  4. 根据权利要求1所述的包装用内衬纸的生产工艺，其特征在于，所述步骤(2)中：复合时，复合机的机速控制在110-130m/min，且复合机设置四组烘箱，所述四组烘箱的温度控制在65-100℃。
  5. 根据权利要求1所述的包装用内衬纸的生产工艺，其特征在于，所述步骤(3)中：熟化室的放置时间为12-24小时，熟化室温度控制在95℃±5℃；剥离机的剥离速度控制在100±10m/min。
  6. 根据权利要求1所述的包装用内衬纸的生产工艺，其特征在于，所述步骤(4)中：仿瓷层为仿瓷油墨或仿瓷涂料涂布而成，且仿瓷油墨或仿瓷涂料中加入2％-15％的氧化锆；涂布时，涂布辊的压力为0.5±0.1MPa，涂布机的机速为90-95m/min，涂料粘度为13±2S，涂布银白转移底纸的收卷张力为0.2±0.05MPa， 涂布干胶量为1.0-1.2g/m 2；涂布膜经4个温度区烘干，所述4个温度区的温度为100℃±10℃、125℃±10℃、130℃±10℃、105℃±10℃。
  7. 根据权利要求1所述的包装用内衬纸的生产工艺，其特征在于，所述步骤(5)中：烫印时，烫印温度为160-170℃，胶辊硬度为80-90A，压力为0.6-0.8MPa，机速为40-50m/min。
  8. 根据权利要求1所述的包装用内衬纸的生产工艺，其特征在于，所述步骤(6)中：所述微雕压纹版采用激光直雕技术雕刻而成，且雕刻时图文与空白采用数据监控控制精确度与准确度；压纹时，机速为110-120m/min，放卷张力为15-20N，收卷张力为250-280N，收卷气压为0.1-0.25kg/cm 2。
  9. 根据权利要求8所述的包装用内衬纸的生产工艺，其特征在于：所述微雕压纹版的雕刻线为2丝-5丝线粗。
  10. 根据权利要求9所述的包装用内衬纸的生产工艺，其特征在于：所述的微雕压纹版，其版辊上镀铬替代镍，以增加光洁度、耐磨性和耐腐蚀性。
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