WO2018036306A1 - 新型热覆合不干胶材料制作与应用工艺 - Google Patents

新型热覆合不干胶材料制作与应用工艺 Download PDF

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Publication number
WO2018036306A1
WO2018036306A1 PCT/CN2017/093438 CN2017093438W WO2018036306A1 WO 2018036306 A1 WO2018036306 A1 WO 2018036306A1 CN 2017093438 W CN2017093438 W CN 2017093438W WO 2018036306 A1 WO2018036306 A1 WO 2018036306A1
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layer
adhesive
self
pressure
hot melt
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PCT/CN2017/093438
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English (en)
French (fr)
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鞠进元
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上海五指山商贸有限公司
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2471/00—Presence of polyether

Definitions

  • the invention relates to a self-adhesive material, a preparation method thereof and an application field thereof, in particular to a heat-clad type self-adhesive material and a self-adhesive label manufacturing process structure and a manufacturing process.
  • a multilayer thermal-clad adhesive composite material comprising:
  • a major surface of the inner substrate layer is bonded to the hot melt adhesive layer, and another major surface of the inner substrate layer is bonded to the pressure sensitive adhesive layer.
  • the composite material further includes a print layer on the hot melt adhesive layer, and the print layer is bonded to the hot melt adhesive layer.
  • the substrate has a thickness of from 1 to 150 ⁇ m.
  • the hot melt adhesive layer has a thickness of from 1 to 80 ⁇ m.
  • the pressure-sensitive adhesive layer has a thickness of 0.1 to 10 ⁇ m.
  • the silicone oil layer has a thickness of 0.01 to 8 ⁇ m.
  • the pressure-sensitive adhesive is applied in an amount of 16 to 50 g/m 2 .
  • the silicone oil is applied in an amount of 16 to 50 g/m 2 .
  • the inner substrate layer is directly or indirectly bonded to the hot melt adhesive layer.
  • the inner substrate layer is directly or indirectly bonded to the pressure-sensitive adhesive layer.
  • the inner surface of the inner substrate layer facing the hot melt adhesive layer is referred to as the H surface.
  • the inner surface of the inner substrate layer facing the pressure-sensitive adhesive layer is referred to as a P-plane.
  • the inner surface of the inner substrate is provided with a dyne-modifying coating.
  • the dyne-modifying coating on the P side of the inner substrate is directly bonded to the pressure-sensitive adhesive layer.
  • the hot melt adhesive layer comprises an ethylene-vinyl acetate copolymer adhesive.
  • the ethylene-vinyl acetate copolymer is selected from the group consisting of polyethylene oxide, low density polyethylene, ethylene vinyl acetate, or combinations thereof.
  • the substrate is selected from the group consisting of phthalic plastics, polyethylene, polypropylene, polyvinyl chloride, phenolic resins, aminoplasts, pearlescent films, synthetic paper, or combinations thereof.
  • the dyne-modifying coating has a dyne value greater than or equal to 35 dynes measured on the P side of the substrate.
  • the dyne-modifying coating is a surface treated layer formed on the surface of the substrate after corona-plasma treatment or coating of various adhesives.
  • the modifying layer has an effect of enhancing adhesion between the substrate P surface and the pressure-sensitive adhesive layer on the substrate P surface.
  • the pressure-sensitive adhesive of the pressure-sensitive adhesive layer is selected from the group consisting of a UV-type hot melt adhesive, an aqueous adhesive, a hot melt adhesive, a solvent-based adhesive, or a combination thereof. .
  • the release layer is glassine, PET base paper, and photo paper.
  • a self-adhesive label comprising the multi-layer thermal clad self-adhesive composite material according to the first aspect of the present invention, and a hot melt adhesive located in the composite material A layer of print above the adhesive layer.
  • the print layer is selected from the group consisting of a gravure print layer, a flexographic print layer, a silkscreen print layer, an offset print layer, a digital print print layer, a embossed print layer, or a combination thereof.
  • a method for preparing a multilayer thermal-adhesive self-adhesive composite comprising the steps of:
  • steps (ii) and (iii) can be carried out simultaneously and sequentially.
  • step (ii) precedes step (iii).
  • step (iii) precedes step (ii).
  • the pressure-sensitive adhesive layer is brought into contact with a carrier substrate having a silicone oil layer, and subjected to press roll lamination.
  • the method further comprises the step of modifying the H-side and/or P-side of the substrate before, during, or after step ii).
  • the P-surface is coated with a pressure-sensitive adhesive by transfer coating on a coater.
  • a method for preparing a label of a self-adhesive material comprising the steps of:
  • the method further comprises: (iii) die-cutting and/or packaging the self-adhesive material label.
  • the method further comprises: step (i0) preceding step (i): printing to form the printed matter, the printed matter as a printed matter layer.
  • the printing is selected from the group consisting of gravure, flexo, silk screen, offset, digital printing, embossing, or combinations thereof.
  • a method of adhering a self-adhesive label according to the second aspect of the invention to an article comprising the steps of:
  • the material of the product comprises: glass, ceramics, metal, wood products, paper products, plastic.
  • the plastic comprises: PP, PE, PET, PC, PVC, PS, ABS.
  • the article comprises: a bottle, a box, a bucket, a package, a tire, a pipe, an appliance.
  • FIG. 1 is a schematic view showing the structure of a thermal clad self-adhesive label of the present invention.
  • the inventors have extensively and intensively studied, and for the first time, unexpectedly discovered a novel thermal lamination self-adhesive material, a preparation method thereof and use thereof. Experiments show that the preparation method of the self-adhesive material can greatly save raw materials and improve production efficiency.
  • the self-adhesive material label of the present invention can be applied to a variety of articles of different materials. On the basis of this, the present invention has been completed.
  • thermoally clad self-adhesive material As used herein, the terms “thermally clad self-adhesive material”, “thermal lamination self-adhesive composite” or “adhesive material” are used interchangeably.
  • hot melt adhesive As used herein, the terms “hot melt adhesive”, “hot melt adhesive” or “hot melt adhesive” are used interchangeably.
  • the hot melt adhesive is a polymer adhesive which is coated in a hot melt state and is bonded by cooling hardening. According to the national standard, the definition of hot melt adhesive is “coated in the molten state and cooled into solid state. A thermoplastic adhesive that is bonded”.
  • pressure sensitive adhesive As used herein, the terms “pressure sensitive adhesive”, “pressure sensitive adhesive” or “pressure sensitive adhesive” are used interchangeably.
  • the finger pressure can be used to bond the adhesive to the smooth surface of the adherend. At the same time, if the adhesive surface is damaged, the adhesive does not contaminate the surface of the adherend. Such an adhesive is called a pressure sensitive adhesive.
  • the term "dym value”, the dyne value is a popular term, which is primarily used to express the magnitude of surface tension.
  • the substrate used in the present invention is subjected to a dyne value treatment.
  • Representative Dyne value treatments include, but are not limited to, corona-plasma treatment, flame treatment, wet coating.
  • the invention employs a corona-plasma treatment.
  • the treatment corona treatment is an electric shock treatment which provides a higher adhesion to the surface of the substrate.
  • the principle is to use high frequency and high voltage to corona discharge on the treated plastic surface (high frequency AC voltage up to 5000-15000V/m 2 ), and generate low temperature plasma to generate free radical reaction on the plastic surface to make the polymer intersect. Coupling, the surface becomes rough and increases its wetting of polar solvents - these ions are destroyed by electric shock and penetration into the surface of the substrate, which oxidizes and polarizes the surface molecules being treated, and ion shocks The surface, so as to increase the adhesion of the surface of the substrate.
  • the main component used to make the thermal overlay sticker is a thermally clad self-adhesive material.
  • the structure of the multi-layer thermal lamination adhesive material includes (but is not limited to):
  • one major surface of the inner substrate layer is bonded to the hot melt adhesive layer and the other major surface of the inner substrate layer is bonded to the pressure sensitive adhesive layer.
  • the multi-layer thermal clad self-adhesive composite material provided by the invention can be used for preparing self-adhesive labels.
  • the sticker consists of a multilayer thermal overlay self-adhesive composite and a printed layer on top of the hot melt adhesive layer in the composite.
  • the printed layer includes, but is not limited to, a gravure print layer, a flexographic print layer, a silkscreen print layer, an offset print layer, a digital print print layer, a embossed print layer, or a combination thereof.
  • the invention also provides a method for preparing a thermal overlay self-adhesive label.
  • Figure 1 is a schematic view of a preferred self-adhesive label structure prepared by:
  • a substrate of a certain thickness (such as 5-150 ⁇ m), examples of which include, but are not limited to: phthalic plastics, polyethylene, polypropylene, polyvinyl chloride, phenolic resin, aminoplast , pearl film, synthetic paper.
  • examples of the adhesive in the hot-melt adhesive layer include (but are not limited to) : Polyethylene oxide (POE), low density polyethylene (LDPE), ethylene vinyl acetate (EVA).
  • PEO Polyethylene oxide
  • LDPE low density polyethylene
  • EVA ethylene vinyl acetate
  • thermal lamination adhesive material treated with steps 1-3 and various printed graphic contents (such as gravure print layer, flexographic print layer, silk screen printed layer, offset printed layer, digital printed layer, convex)
  • printed matter layer is laminated and die-cut into a self-adhesive label by a thermal laminator.
  • the preparation method of the self-adhesive material of the invention replaces the traditional self-adhesive preparation method.
  • the self-adhesive material of different surface materials needs to be purchased, and the debugging, refueling and quality treatment in the printing process are not dry.
  • the whole material of the glue includes a large amount of waste of the surface material, the bottom paper and the glue, and the new heat lamination is made of a self-adhesive material.
  • the printing process only the waste of the face material is caused, the production cost is greatly reduced, and the raw materials are saved.
  • the self-adhesive label preparation method of the invention eliminates the problem of re-coating after printing in the original preparation method, thereby causing a complicated production process such as changing specifications and changing glue, and waste of cost.

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  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Abstract

本发明公布了一种新型热覆合不干胶材料、及其制法和应用。包括：苯二甲酸类塑料、聚乙烯、聚丙烯、聚氯乙烯、酚醛树脂、氨基塑料、珠光膜、合成纸等材料，通过表面涂布淋膜等方式处理聚氧化乙烯（POE）、低密度聚乙烯（LDPE）、乙烯-醋酸乙烯共聚物（EVA）等乙烯-醋酸乙烯共聚物类热熔性胶粘涂层，内面经表面张力处理后在涂胶机上经转移涂胶方式涂胶后，与带有硅油格拉辛、PET等底纸经过涂胶机覆合压辊覆合形成新型的热覆合不干胶材料，此材料应用于通过在凹印、柔印、丝印、胶印、数码印、凸印等各种印刷方式印刷物经过热覆合机进行覆合、模切制作成不干胶标签。

Description

新型热覆合不干胶材料制作与应用工艺 技术领域
本发明涉及不干胶材料、及其制法和应用领域，具体来说涉及一种热覆合型不干胶材料和不干胶标签制作工艺结构和制作流程。
背景技术
在传统的不干胶制作中需要向不干胶原材料厂家购买已有面材、胶水、硅油底纸的原材料，再有印刷厂印刷模切实现不干胶标签，在生产过程中会调试、换料、质量处理，造成面材、胶水、硅油底纸的原材料报废，而且对于不同客户要配备大量库存材料，造成原材料积压，生产成本较高，现在新兴的印刷后涂胶不干胶制作工艺，因产品品种规格多、胶水种类需求多，造成换胶、换料导致大量的效率和成本浪费，而且生产工序较多产生大量产品报废。
发明内容
本发明的目的在于提供一种热覆合型不干胶材料、及其制法和应用。
本发明的第一方面，提供了一种多层热覆合不干胶复合材料，该复合材料自上而下层叠，包括：
(a)热熔胶粘层；
(b)内基材层，其中所述的内基材层的一个或多个主表面上可任选地具有达因值修饰涂层；
(c)压敏胶粘层；
(d)硅油层；
(e)承载基材层，其中所述的承载基材层是可剥离的；
其中所述内基材层的一个主表面与所述的热熔胶粘层粘合，而所述内基材层的另一主表面与所述的压敏胶粘层粘合。
在另一优选例中，所述的复合材料还包括位于所述热熔胶粘层之上的印刷物层，并且所述的印刷物层粘合于所述的热熔胶粘层。
在另一优选例中，所述的基材厚度为1-150μm。
在另一优选例中，所述的热熔胶层厚度为1-80μm。
在另一优选例中，所述的压敏性胶粘层厚度为0.1-10μm。
在另一优选例中，所述的硅油层厚度为0.01-8μm。
在另一优选例中，所述的压敏性胶粘剂的涂布量为16-50g/m2。
在另一优选例中，所述的硅油的涂布量为16-50g/m2。
在另一优选例中，所述的内基材层与热熔胶粘层是直接粘合或间接粘合的。
在另一优选例中，所述的内基材层与压敏胶粘层是直接粘合或间接粘合的。
在另一优选例中，所述的内基材层朝向热熔胶粘层的主表面称为H面。
在另一优选例中，所述的内基材层朝向压敏胶粘层的主表面称为P面。
在另一优选例中，所述的内基材的P面上设有达因值修饰涂层。
在另一优选例中，所述的内基材的P面上的达因值修饰涂层与压敏性胶粘层直接粘合。
在另一优先例中，所述的热熔胶粘层中包含乙烯-醋酸乙烯共聚物类胶粘剂。
在另一优先例中，所述的乙烯-醋酸乙烯共聚物类物质选自下组：聚氧化乙烯、低密度聚乙烯、乙烯-醋酸乙烯共聚物，或其组合。
在另一优先例中，所述的基材选自下组：苯二甲酸类塑料、聚乙烯、聚丙烯、聚氯乙烯、酚醛树脂、氨基塑料、珠光膜、合成纸，或其组合。
在另一优先例中，所述的达因值修饰涂层对所述的基材P面测得的达因值大于或等于35达因。
在另一优先例中，所述的达因值修饰涂层是用电晕-等离子体处理或涂布各种接着剂后对基材表面形成的表面处理层。
在另一优选例中，所述的修饰层对所述的基材P面具有增强基材P面与压敏性胶粘层之间粘附性的效果。
在另一优先例中，所述的压敏性胶粘层的压敏性胶粘剂选自下组：UV型热熔胶、水性型胶、热熔性型胶、溶剂性型胶、或其组合。
在另一优先例中，所述的剥离层为格拉辛、PET底纸、相片纸。
本发明的第二方面，提供了一种不干胶标签，所述的标签包括本发明第一方面所述的多层热覆合不干胶复合材料，以及位于所述复合材料中热熔胶粘层之上的印刷物层。
在另一优选例中，所述的印刷物层选自下组：凹印印刷物层、柔印印刷物层、丝印印刷物层、胶印印刷物层、数码印印刷物层、凸印印刷物层、或其组合。
本发明的第三方面，提供了一种多层热覆合不干胶复合材料的制备方法，包括步骤如下：
(i)提供一内基材作为内基材层；
(ii)在所述内基材的一个主表面上施涂热熔性胶粘剂，从而形成热熔胶粘层；
(iii)在所述内基材的另一个主表面上施涂压敏性胶粘剂，从而形成压敏胶粘层；
(iv)在所述的压敏胶粘层之下施涂硅油，从而形成硅油层，并在所述硅油层之下设置作为承载基材层的承载基材；或者在所述的压敏胶粘层与带有硅油层的承载基材进行结合，从而形成如本发明第一方面所述的多层热覆合不干胶复合材料。
附加条件是，步骤(ii)和(iii)可同时、先后进行。
在另一优选例中，步骤(ii)在步骤(iii)之前。
在另一优选例中，步骤(iii)在步骤(ii)之前。
在另一优选例中，在步骤(v)中，将所述的压敏胶粘层与带有硅油层的承载基材接触，并进行压辊覆合。
在另一优选例中，还包括步骤：在步骤ii)之前，或之中，或之后，对基材H面和/或P面进行修饰。
在另一优选例中，通过在涂胶机上经转移涂胶方式对P面涂覆压敏性胶粘剂。
本发明的第四方面，提供了一种不干胶材料标签的制备方法，包括步骤：
(i)提供一印刷物层和如本发明第一方面所述的多层热覆合不干胶复合材料；和
(ii)将所述的印刷物层热覆合于所述多层热覆合不干胶复合材料的热熔胶粘层之上，从而形成如本发明第二方面所述的不干胶材料标签。
在另一优选例中，所述方法还包括：(iii)对所述的不干胶材料标签进行模切和/或包装。
在另一优选例中，所述的方法还包括：位于步骤(i)之前的步骤(i0)：进行印刷，从而形成所述一印刷物，所述印刷物作为印刷物层。
在另一优选例中，所述的印刷选自下组：凹印、柔印、丝印、胶印、数码印、凸印、或其组合。
本发明的第五方面，提供了一种在制品上粘附如本发明第二方面所述的不干胶标签的方法，包括步骤：
(i)提供一种如本发明第二方面所述的不干胶标签；
(ii)剥离带有硅油层的承载基材；和
(iii)施加压力将剩下部分通过压敏性胶粘层与制品接触的方式使之粘附于制品上。
在另一优选例中，所述的制品材质包括：玻璃、陶瓷、金属、木制品、纸制品、 塑料。
在另一优选中，所述的塑料包括：PP、PE、PET、PC、PVC、PS、ABS。
在另一优选例中，所述的制品包括：瓶子、箱子、桶、包装袋、轮胎、管道、电器。
应理解，在本发明范围内中，本发明的上述各技术特征和在下文(如实施例)中具体描述的各技术特征之间都可以互相组合，从而构成新的或优选的技术方案。限于篇幅，在此不再一一累述。
附图说明
图1为本发明热覆合不干胶标签结构示意图。
上述附图中各部件名称与部件名称对应关系如下：
1、热熔性胶粘层
2、内基材层
3、达因值修饰层
4、压敏胶粘层
5、硅油层
6、承载基材层
7、印刷层
具体实施方式
本发明人经过广泛而深入地研究，首次意外地发现了一种新型热覆合不干胶材料及其制备方法和用途。实验表明，所述的不干胶材料制备方法可以大大节省原材料，并提高生产效率。本发明的不干胶材料标签可应用于多种不同材质的制品。在此基础上，完成了本发明。
术语
如本文所用，术语“热覆合不干胶材料”、“热覆合不干胶复合材料”或“不干胶材料”可互换使用。
如本文所用，术语“热熔胶”、“热熔胶粘剂”或“热熔性胶粘剂”可互换使用。热熔胶粘剂是一种在热熔状态进行涂布，借冷却硬化实现胶接的高分子胶粘剂。按国标的规定，热熔胶的定义“在熔化状态进行涂布，冷却成固态就完成 粘接的一种热塑性胶粘剂”。
如本文所用，术语“压敏胶”、“压敏胶粘剂”或“压敏性胶粘剂”可互换使用。采用指能压力，就能使胶粘剂粘接到被粘物光洁表面，与此同时，如果破坏被粘物粘接表面时，胶粘剂不污染被粘物表面，此类胶粘剂称为压敏胶。
如本文所用，术语“达因值”，达因值是一个通俗叫法，其主要用在表述表面张力的大小中。
达因是力的单位，1达因＝10-5牛。但通常我们说的表面张力其实也是通俗的叫法，准确的说应该是表面张力系数。定义是液体表面相邻两部分之间，单位长度内互相牵引的力。表面张力的单位在SI制中为牛顿/米(N/m)，但仍常用达因/厘米(dyn/cm)，1dyn/cm＝1mN/m)。达因值的测量在印刷里最常用，可反映出该材料好不好印刷，适用什么样的油墨。因为材料的达因值是某个数值，选用的油墨要与之接近并稍小才能达到最好的印刷效果。
优选地，用于本发明的基材是经过达因值处理的。代表性的达因值处理方式包括(但并不限于)：电晕-等离子体处理处理、火焰处理、湿涂。
优选地，本发明采用电晕-等离子体处理。所述的处理电晕处理是一种电击处理，它使承印物的表面具有更高的附着性。其原理是利用高频率高电压在被处理的塑料表面电晕放电(高频交流电压高达5000-15000V/m2)，而产生低温等离子体，使塑料表面产生游离基反应而使聚合物发生交联，表面变粗糙并增加其对极性溶剂的润湿忆-这些离子体由电击和渗透进入被印体的表面破坏其分子结构，进而将被处理的表面分子氧化和极化，离子电击侵蚀表面，以致增加承印物表面的附着能力。
热覆合不干胶材料
用于制备热覆合不干胶标签的主要部件是热覆合不干胶材料。
在本发明中，所述的多层热覆合不干胶材料结构依次包括(但并不限于)：
(a)热熔胶粘层；
(b)内基材层，其中所述的内基材层的一个或多个主表面上可任选地具有达因值修饰涂层；
(c)压敏胶粘层；
(d)硅油层；
(e)承载基材层，其中所述的承载基材层是可剥离的；
通常，所述内基材层的一个主表面与所述的热熔胶粘层粘合，而所述内基材层的另一主表面与所述的压敏胶粘层粘合。
热覆合不干胶标签
本发明提供的多层热覆合不干胶复合材料可用于制备不干胶标签。该不干胶标签由多层热覆合不干胶复合材料，以及位于所述复合材料中热熔胶粘层之上的印刷物层组成。
优选地，所述的印刷物层包括(但并不限于)：凹印印刷物层、柔印印刷物层、丝印印刷物层、胶印印刷物层、数码印印刷物层、凸印印刷物层、或其组合。
热覆合不干胶标签制备方法
本发明还提供了热覆合不干胶标签的制备方法。
一种优选的热覆合不干胶材料制作方法，具体实施如下，图1是制备所得的一种优选的不干胶标签结构示意图：
1.选择一定厚度(如5-150μm)的基材，所述基材的例子包括(但并不限于)：苯二甲酸类塑料、聚乙烯、聚丙烯、聚氯乙烯、酚醛树脂、氨基塑料、珠光膜、合成纸。
2.通过一定方式(如表面涂布淋膜)处理一定厚度(1-80μm)的热熔性胶粘涂层，所述热熔性胶粘层中的胶粘剂的例子包括(但并不限于)：聚氧化乙烯(POE)、低密度聚乙烯(LDPE)、乙烯-醋酸乙烯共聚物(EVA)。
3.将(1)(2)处理后的材料内面经表面张力处理后在涂胶机上经转移涂胶方式涂胶后，与带有硅油的底纸(例如格拉辛、PET底纸、相片纸)经过涂胶机覆合压辊覆合形成新型的热覆合不干胶材料。
4.经步骤1-3处理后的热覆合不干胶材料与各种印刷图文内容(如凹印印刷物层、柔印印刷物层、丝印印刷物层、胶印印刷物层、数码印印刷物层、凸印印刷物层)经过热覆合机进行覆合、模切制作成所述的不干胶标签。
本发明主要优点
1.本发明不干胶材料的制备方法替代了传统不干胶制备方法，在传统方法中，需要购买不同面材的不干胶材料，印刷过程中调试、换料、质量处理造成的不干胶整个材料包括面材、底纸、胶水的大量浪费，此新热覆合不干胶材料制作工艺， 在印刷过程中只会造成面材浪费，大幅度的降低了生产成本，节省了原材料。
2.本发明的不干胶标签制备方法消除了原制备方法中印刷后再涂胶，从而造成换规格、换胶水等生产流程复杂化和成本浪费的现象。
在本发明提及的所有文献都在本申请中引用作为参考，就如同每一篇文献被单独引用作为参考那样。此外应理解，在阅读了本发明的上述讲授内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。

Claims (10)

  1. 一种多层热覆合不干胶复合材料，其特征在于，该复合材料自上而下层叠，包括：
    (a)热熔胶粘层；
    (b)内基材层，其中所述的内基材层的一个或多个主表面上可任选地具有达因值修饰涂层；
    (c)压敏胶粘层；
    (d)硅油层；
    (e)承载基材层，其中所述的承载基材层是可剥离的；
    其中所述内基材层的一个主表面与所述的热熔胶粘层粘合，而所述内基材层的另一主表面与所述的压敏胶粘层粘合。
  2. 如权利要求1所述的不干胶材料，其特征在于，所述的热熔胶粘层包含乙烯-醋酸乙烯共聚物类胶粘剂。
  3. 如权利要求1所述的不干胶材料，其特征在于，所述的基材选自下组：苯二甲酸类塑料、聚乙烯、聚丙烯、聚氯乙烯、酚醛树脂、氨基塑料、珠光膜、合成纸，或其组合。
  4. 如权利要求1所述的不干胶材料，其特征在于，所述的达因值修饰涂层对所述的基材P面测得的达因值大于或等于35达因。
  5. 如权利要求1所述的不干胶材料，其特征在于，所述的压敏性胶粘层的压敏性胶粘剂选自下组：UV型热熔胶、水性型胶、热熔性型胶、溶剂性型胶，或其组合。
  6. 一种不干胶标签，其特征在于，所述的标签包括权利要求1所述的多层热覆合不干胶复合材料，以及位于所述复合材料中热熔胶粘层之上的印刷物层。
  7. 一种权利要求1所述的多层热覆合不干胶复合材料的制备方法，其特征在于，包括步骤：
    (i)提供一内基材作为内基材层；
    (ii)在所述内基材的一个主表面上施涂热熔性胶粘剂，从而形成热熔胶粘层；
    (iii)在所述内基材的另一个主表面上施涂压敏性胶粘剂，从而形成压敏胶粘层；
    (iv)在所述的压敏胶粘层之下施涂硅油，从而形成硅油层，并在所述硅油层之下设置作为承载基材层的承载基材；或者在所述的压敏胶粘层与带有硅油层的承载基材进行结合，从而形成权利要求1所述的多层热覆合不干胶复合材料。
  8. 如权利要求7所述的不干胶制备方法，还包括步骤：在步骤2)之前，或之中，或之后，对基材H面和/或P面进行修饰。
  9. 一种权利要求6所述的不干胶材料标签的制备方法，其特征在于，包括步骤：
    (i)提供一印刷物层和如权利要求1所述的多层热覆合不干胶复合材料；和
    (ii)将所述的印刷物层热覆合于所述多层热覆合不干胶复合材料的热熔胶粘层之上，从而形成权利要求6所述的不干胶材料标签。
  10. 一种在制品上粘附如权利要求6所述的不干胶标签的方法，其特征在于，包括步骤：
    (i)提供一种如权利要求6所述的不干胶标签；
    (ii)剥离带有硅油层的承载基材；和
    (iii)施加压力将剩下部分通过压敏性胶粘层与制品接触的方式使之粘附于制品上。
PCT/CN2017/093438 2016-08-24 2017-07-18 新型热覆合不干胶材料制作与应用工艺 WO2018036306A1 (zh)

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