WO2017148062A1 - 一种低粘自排气广告膜 - Google Patents

一种低粘自排气广告膜 Download PDF

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Publication number
WO2017148062A1
WO2017148062A1 PCT/CN2016/089098 CN2016089098W WO2017148062A1 WO 2017148062 A1 WO2017148062 A1 WO 2017148062A1 CN 2016089098 W CN2016089098 W CN 2016089098W WO 2017148062 A1 WO2017148062 A1 WO 2017148062A1
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Prior art keywords
layer
film
dispensing
low
venting
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PCT/CN2016/089098
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English (en)
French (fr)
Inventor
韩靖
阳芳
刘建伟
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东莞中世拓实业有限公司
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Priority to DE112016006513.2T priority Critical patent/DE112016006513T5/de
Priority to JP2018549379A priority patent/JP7174629B2/ja
Priority to GB1811039.5A priority patent/GB2561127B/en
Publication of WO2017148062A1 publication Critical patent/WO2017148062A1/zh

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    • 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
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
    • G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
    • 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
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • 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
    • B32B37/1284—Application of adhesive
    • B32B37/1292—Application of adhesive selectively, e.g. in stripes, in patterns
    • 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
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • 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
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
    • G09F15/02—Bills, posters, or the like therefor
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/12—Coating on the layer surface on paper layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/746—Slipping, anti-blocking, low friction
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/75—Printability
    • 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
    • B32B27/08—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 synthetic resin
    • 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
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/204—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive coating being discontinuous
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • 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
    • C09J2499/00—Presence of natural macromolecular compounds or on derivatives thereof, not provided for in groups C09J2489/00 - C09J2497/00
    • 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
    • C09J2499/00—Presence of natural macromolecular compounds or on derivatives thereof, not provided for in groups C09J2489/00 - C09J2497/00
    • C09J2499/005—Presence of natural macromolecular compounds or on derivatives thereof, not provided for in groups C09J2489/00 - C09J2497/00 in the release coating
    • 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
    • C09J2499/00—Presence of natural macromolecular compounds or on derivatives thereof, not provided for in groups C09J2489/00 - C09J2497/00
    • C09J2499/006—Presence of natural macromolecular compounds or on derivatives thereof, not provided for in groups C09J2489/00 - C09J2497/00 in the substrate

Definitions

  • the invention belongs to the field of advertising consumables, in particular to a low-viscosity self-venting advertising film.
  • advertising film As a kind of advertising consumables, advertising film has been widely used in various advertising display fields. With the development of digital imaging, its use is increasing. It is used in large-scale advertising display, indoor poster posting, art photo and digital graphic output. There are a large number of applications.
  • the front side of the advertising film is printed with pattern characters by color inkjet printing, digital printing or traditional ink printing, and the back side is coated with an adhesive.
  • the existing adhesive advertising film is generally a general product with high viscosity and non-movable, general exhaust performance, and a small number of high-viscosity, non-movable, excellent venting or low-viscosity, special products with general exhaust performance. .
  • low-viscosity movable products mostly use low-viscosity pressure-sensitive adhesives. Although the adhesiveness is low, it is not easy to produce residual glue. However, since the adhesive layer is applied by the whole coating method, the adhesive layer is exhausted during construction. Poor sex is easy to eliminate bubbles on the adhesive surface, which is difficult to eliminate, affecting the flatness and ease of construction, such as the products mentioned in the patents CN201520267528.5, CN201520019005.9, CN201520018725.3. There are no adhesive adhesives on the market that have excellent venting performance and low stickiness.
  • the present invention provides an excellent posting for the current status of products that only have good exhaust performance, but are highly viscous, or low-viscosity, but have a general exhaust performance.
  • Exhaust performance, low-viscosity, low-viscosity self-venting advertising film for advertising consumables A convenient, reusable solution.
  • the invention discloses a low-viscosity self-venting advertising film, comprising an advertising film layer, a dispensing layer and a release layer, and a reinforcing bonding layer is further arranged between the back surface of the advertising film layer and the dispensing layer, and the dispensing layer is composed of more than 4 independent layers.
  • the separated dispensing points are composed, and the area of the dispensing layer is 30-80% of the area of the reinforcing bonding layer.
  • Each dispensing point of the dispensing layer is any one of a cylinder, a cube, a cuboid, a cone, a trapezoid, a prism, a hollow circle, a semicircle or a small semicircle.
  • the dispensing point has an inner diameter of 0.1-5 mm and a thickness of 0.005-2 mm.
  • An exhaust groove is formed between the dispensing point and the dispensing point, and the width of the exhaust groove is 0.02-5 mm.
  • the 180 degree peel force of the dispensing layer is 0.01-3 N/25 mm.
  • the main chemical component of the dispensing point is one or more of polyacrylate, polyorganosiloxane, polyurethane, rubber, and thermoplastic elastomer.
  • the dispensing viscosity of the dispensing is 1000-50000 mPa.s. The viscosity is less than 1000mPa.s, the dispensing is not easy to form, the viscosity is more than 50000mPa.s, and the coating construction will be difficult due to too much viscosity;
  • the advertising film layer is one of a PET film, a PP film, a PP synthetic paper, a PVC film, a PC film, a PS film, a PE film, a PI film, or any one of two or more composite films.
  • the front side of the advertising film layer is coated with a printing adaptive layer for printing inkjet of UV ink, weak solvent ink, aqueous ink and HP latex ink, and HP Indigo digital printing, laser toner printing and conventional ink
  • the thickness of the printed, printed, compliant layer is from 0.2 microns to 50 microns.
  • the release layer is any one of a PP film, a PET film, a PE film, and a PP film with a silicone oil or a fluorine release agent, a PET film, a PE release film, or a release paper.
  • the method for preparing the low-viscosity self-venting advertising film is characterized in that: a reinforcing bonding layer is coated on the back surface of the advertising film layer, and then the rule is reproduced on the reinforcing bonding layer by the release layer transfer coating method. Dispensing, forming a gap between the dispensing and dispensing, so as to have good self-venting performance. .
  • the invention can provide an advertising film with excellent exhaust performance, low viscosity and removability, reusable use, and long-term posting without falling off in the field of advertising consumables, and at the same time solve the ubiquitous posting in this field. It produces four problems of bubble point, high-viscosity residual glue, can not be used repeatedly, and low-viscosity sticking and easy to fall off, providing a convenient solution for advertising consumables and excellent product performance.
  • the invention adopts a reinforcing bonding layer which is compounded by a coupling agent and a primer accelerator, and in the case of low and medium peeling force, the dispensing point still has excellent adhesion to the base film.
  • the invention coats the reinforcing adhesive layer on the back side of the advertising film layer by the release layer transfer method, and the size and shape of the local glue dots can be freely adjusted according to requirements, and the gap between the glue dots is posted on the advertising film.
  • the air passage can be formed to make the product have excellent exhaust performance. It can be perfectly applied by hand without any tools, and no air bubbles remain.
  • the adhesive layer is low-viscosity and can be moved, the adhesive film can still be applied to the advertising film after transfer coating.
  • the substrate produces excellent adhesion and the aging resistance of the adhesive layer is excellent.
  • Figure 1 is a schematic cross-sectional view showing the main structure of the present invention
  • Figure 2 is a front elevational view of the dispensing layer of Figure 1 with the release film removed.
  • the advertising film layer 2, the reinforcing bonding layer; 3, the dispensing layer; 4, the release layer.
  • the invention discloses a low-viscosity self-venting advertising film, comprising an advertising film layer, a dispensing layer and a release layer, and a reinforcing bonding layer is further arranged between the back surface of the advertising film layer and the dispensing layer, and the dispensing layer is composed of more than 4 independent layers.
  • the separated dispensing points are composed, and the area of the dispensing layer is 30-80% of the area of the reinforcing bonding layer.
  • each dispensing point of the dispensing layer can be arbitrarily selected, such as a cylinder, a cube, a rectangular parallelepiped, a cone, a trapezoid, a prism, a hollow circle, a semicircle or a small semicircle.
  • the dispensing point may have an inner diameter of from 0.1 to 5 mm, preferably from 0.5 to 2 mm, and the dispensing layer may have a thickness of from 0.005 to 2 mm, preferably from 0.01 to 1 mm.
  • An exhaust groove is formed between the dispensing point and the dispensing point, and the width of the exhaust groove is 0.02-5 mm.
  • the 180 degree peel force of the dispensing layer was 0.01 - 3 N / 25 mm.
  • the main chemical component of the dispensing point may be one or more of polyacrylate, polyorganosiloxane, polyurethane, rubber, thermoplastic elastomer.
  • the advertising film layer is PET film, PP film, PP synthetic paper, PVC film, PC film, PS film, PE film, PI film. One, or any one of two or more composite films.
  • the front side of the advertising film layer is coated with a printing adaptive layer for printing inkjet of UV ink, weak solvent ink, aqueous ink and HP latex ink, and HP Indigo digital printing, laser toner printing and conventional ink
  • the thickness of the printed, printed, compliant layer is from 0.2 microns to 50 microns.
  • the release layer is any one of a PP film, a PET film, a PE film, and a PP film with a silicone oil or a fluorine release agent, a PET film, a PE release film, or a release paper.
  • the low-viscosity self-venting advertising film is prepared by coating a back surface of the base film of the advertising film with a reinforcing bonding layer, and then replicating the regular dispensing on the reinforcing bonding layer by a release layer transfer coating method. , to form a gap between the dispensing and dispensing, so as to have good self-venting performance.
  • Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 Adhesive layer structure Dispensing Dispensing Dispensing Whole coating Whole coating Rubber layer thickness (mm) 0.03 0.06 0.1 0.05 0.05 Dispensing diameter (mm) 0.2 0.5 1 Rubber layer coverage percentage% 75 60 50 100 100 Adhesive force (N/25mm) 0.6 1 0.9 5 0.6 Posting with or without bubbles no no no Have Have Repeatability can can can Not can
  • the low-viscosity self-venting advertising film prepared by the present invention has significant advantages in self-venting and repeated use as compared with the prior art.
  • the invention can provide an advertising film with excellent exhausting performance, low viscosity and removability, reusable use, and long-term posting without falling off in the field of advertising consumables, and at the same time, solving the ubiquitous posting in this field is easy to generate bubble points and high.
  • Sticky adhesive can not be used repeatedly, low-viscosity, easy to fall off the four major problems, for advertising supplies Provides a convenient construction, excellent product performance solution, and industrial applicability.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

一种低粘自排气广告膜，包括广告膜层（1）、点胶层（3）和离型层（4），广告膜层（1）的背面和点胶层（3）之间还设有增强粘结层（2），点胶层（3）由4个以上独立分离的点胶点组成，点胶层（3）的面积为增强粘结层（2）面积的30-80％。所述广告膜为广告耗材领域，提供一种张贴排气性能优异、低粘可移、可反复使用、且具有长期张贴不脱落的广告膜，同时解决此领域普遍存在的张贴易产生气泡点、高粘残胶、无法反复使用、低粘张贴易脱落的四大问题，为广告耗材提供一种便捷施工、产品性能优异的解决方案。

Description

一种低粘自排气广告膜 技术领域
本发明属于广告耗材领域，特别涉及一种低粘自排气广告膜。
背景技术
广告膜作为一种广告耗材已广泛用于各类广告展示领域，随着数码影像的发展，其使用量越来越大，在大型广告展示、室内海报张贴、艺术写真和数码图文输出方面均有大量应用。广告膜正面通过彩色喷墨打印、数码印刷或传统油墨印刷方式印刷上图案文字，背面涂布有胶粘剂。现有的背胶广告膜多为高粘不可移、张贴排气性能一般的普通产品，及少部分高粘不可移、张贴排气性优良或低粘可移、张贴排气性能一般的特殊产品。高粘产品由于所用胶粘剂粘接力较强，容易在被粘物体表面产生残胶，导致后期清理困难甚至破坏被粘物体表面，因此使用范围较窄，多为一次性使用，如专利CN201510406570.5、CN201420726053.7、CN200920198832.3和CN200720114828.5所提到的产品。
技术问题
市售低粘可移产品多采用低粘性压敏胶，虽然粘性较低不易产生残胶，但由于胶层是通过整幅涂布的方式涂布，在施工张贴时由于背胶层的排气性不好容易在粘贴面产生汽泡不易排除，影响张贴平整性和施工便捷性，如专利CN201520267528.5、CN201520019005.9、CN201520018725.3中提及的产品。市面上尚未出现同时具有优异排气性能、低粘可移的背胶广告耗材。
为此，开发一种低粘可移、可反复张贴、排气性能优异、又能长期黏贴的广告膜将会受到市场的极大欢迎。。
问题的解决方案
技术解决方案
在背胶广告耗材领域，针对目前市场上只有张贴良好排气性能、却高粘不可移，或是低粘可移、但张贴排气性能一般的产品现状，本发明提供一种既具有优异张贴排气性能、又具有低粘可移的一种低粘自排气广告膜，为广告耗材提供 一种便捷张贴、且可反复使用的解决方案。
为实现以上目的，本发明的技术方案为：
一种低粘自排气广告膜，包括广告膜层、点胶层和离型层，广告膜层的背面和点胶层之间还设有增强粘结层，点胶层由4个以上独立分离的点胶点组成，点胶层的面积为增强粘结层面积的30-80％。
所述点胶层的每个点胶点为圆柱体、正方体、长方体、锥形体、梯形体、棱形体、空心圆体、半圆或小半圆体的任一种。
所述点胶点的内径为0.1-5mm，厚度为0.005-2mm。
所述点胶点与点胶点之间形成排气槽，排气槽的宽度为0.02-5mm。
所述点胶层的180度剥离力为0.01-3N/25mm。
所述点胶点的主要化学成分为聚丙烯酸酯、聚有机硅氧烷、聚氨酯、橡胶、热塑性弹性体中的一种或几种。点胶的施工粘度为1000-50000mPa.s。粘度小于1000mPa.s，点胶不易成型，粘度大于50000mPa.s，涂布施工会因粘度太大变得困难；
所述广告膜层为PET膜、PP膜、PP合成纸、PVC膜、PC膜、PS膜、PE膜、PI膜中的一种，或其中两种及以上复合膜中的任一种。
所述广告膜层的正面涂布有印刷适应层，印刷适应层用于UV墨水、弱溶剂墨水、水性墨水和HP latex墨水喷墨的印刷，以及HP Indigo数码印刷、激光碳粉印刷和传统油墨印刷，印刷适应层的厚度为0.2微米-50微米。
所述离型层为PP膜、PET膜、PE膜和带有硅油或氟素离型剂的PP膜、PET膜、PE离型膜或离型纸中的任一种。
所述低粘自排气广告膜的制备方法，其特征在于：在广告膜层的背面涂布有一层增强粘结层，然后通过离型层转移涂布法在增强粘结层上复制出规则的点胶，使点胶和点胶之间形成空隙，从而具有良好的自排气性能。。
发明的有益效果
有益效果
1、本发明可为广告耗材领域，提供一种张贴排气性能优异、低粘可移、可反复使用、且具有长期张贴不脱落的广告膜，同时解决此领域普遍存在的张贴易 产生气泡点、高粘残胶、无法反复使用、低粘张贴易脱落的四大问题，为广告耗材提供一种便捷施工、产品性能优异的解决方案。
2.本发明采用通过偶联剂、底涂促进剂复配的增强粘结层，在中低剥离力的情况下，点胶点仍对基膜具有优异的附着力。
3.本发明通过离型层转移法涂布在广告膜层背面的增强粘结层局部上胶，局部胶点的大小和形状可根据需求自由调整，胶点间的空隙沟壑在广告膜张贴时可形成气路通道，使产品具有优异的排气性能，不借助任何工具，手工即可完美张贴，不残留任何气泡，虽胶层低粘可移，转移涂布后胶点仍能对广告膜基材产生极佳的附着力，且胶层耐老化性能优异。
对附图的简要说明
附图说明
图1为本发明主体结构剖面示意图；
图2为图1中去掉离型膜后点胶层的正面示意图。
图中：1、广告膜层；2、增强粘结层；3、点胶层；4、离型层。
发明实施例
本发明的实施方式
一种低粘自排气广告膜，包括广告膜层、点胶层和离型层，广告膜层的背面和点胶层之间还设有增强粘结层，点胶层由4个以上独立分离的点胶点组成，点胶层的面积为增强粘结层面积的30-80％。
点胶层的每个点胶点形状可以任意选择，如为圆柱体、正方体、长方体、锥形体、梯形体、棱形体、空心圆体、半圆或小半圆体的任一种。
点胶点为的内径可以为0.1-5mm，优选为0.5-2mm，点胶层的厚度可以为0.005-2mm，优选为0.01-1mm。
点胶点与点胶点之间形成排气槽，排气槽的宽度为0.02-5mm。
点胶层的180度剥离力为0.01-3N/25mm。
点胶点的主要化学成分可为聚丙烯酸酯、聚有机硅氧烷、聚氨酯、橡胶、热塑性弹性体的一种或几种。
广告膜层为PET膜、PP膜、PP合成纸、PVC膜、PC膜、PS膜、PE膜、PI膜中 的一种，或其中两种及以上复合膜中的任一种。
所述广告膜层的正面涂布有印刷适应层，印刷适应层用于UV墨水、弱溶剂墨水、水性墨水和HP latex墨水喷墨的印刷，以及HP Indigo数码印刷、激光碳粉印刷和传统油墨印刷，印刷适应层的厚度为0.2微米-50微米。
离型层为PP膜、PET膜、PE膜和带有硅油或氟素离型剂的PP膜、PET膜、PE离型膜或离型纸中的任一种。
低粘自排气广告膜的制备方法是：在广告膜层基膜的背面涂布有一层增强粘结层，然后通过离型层转移涂布法在增强粘结层上复制出规则的点胶，使点胶和点胶之间形成空隙，从而具有良好的自排气性能。
通过本发明实施例1-3制备的低粘自排气广告膜和现有的广告膜进行性能对比，表格如下：
现有的广告膜有2种，对比例1高粘广告膜和对比例2低粘广告膜。
  实施例1 实施例2 实施例3 对比例1 对比例2
胶层结构 点胶 点胶 点胶 整幅涂布 整幅涂布
胶层厚度(mm) 0.03 0.06 0.1 0.05 0.05
点胶直径(mm) 0.2 0.5 1    
胶层覆盖百分比％ 75 60 50 100 100
胶粘力(N/25mm) 0.6 1 0.9 5 0.6
张贴有无气泡 无 无 无 有 有
反复使用性 可 可 可 不可 可
通过以上表格可以看出，本发明制备的低粘自排气广告膜和现有技术相比，在自排气和反复使用方面具有明显的优势。
以上所述并非对本发明的技术范围作任何限制，凡依据本发明技术实质对以上的实施例所作的任何修改、等同变化与修饰，均仍属于本发明的技术方案的范围内。
工业实用性
本发明可为广告耗材领域，提供一种张贴排气性能优异、低粘可移、可反复使用、且具有长期张贴不脱落的广告膜，同时解决此领域普遍存在的张贴易产生气泡点、高粘残胶、无法反复使用、低粘张贴易脱落的四大问题，为广告耗材 提供一种便捷施工、产品性能优异的解决方案，具备工业实用性。

Claims (10)

  1. 一种低粘自排气广告膜，其特征在于：包括广告膜层、点胶层和离型层，广告膜层的背面和点胶层之间还设有增强粘结层，点胶层由4个以上独立分离的点胶点组成，点胶层的面积为增强粘结层面积的30-80％。
  2. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述点胶层的每个点胶点为圆柱体、正方体、长方体、锥形体、梯形体、棱形体、空心圆体、半圆或小半圆体的任一种。
  3. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述点胶点的内径为0.1-5mm，厚度为0.005-2mm。
  4. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述点胶点与点胶点之间形成排气空隙，空隙宽度为0.02-5mm。
  5. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述点胶层的180度剥离力为0.01-3N/25mm。
  6. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述点胶点的主要化学成分为聚丙烯酸酯、聚有机硅氧烷、聚氨酯、橡胶、热塑性弹性体中的一种或几种。点胶的施工粘度为1000-50000mpa.s。
  7. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述广告膜层为PET膜、PP膜、PP合成纸、PVC膜、PC膜、PS膜、PE膜、PI膜中的一种，或其中两种及以上复合膜中的任一种。
  8. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述广告膜层的正面涂布有印刷适应层，印刷适应层用于UV墨水、弱溶剂墨水、水性墨水和HP latex墨水喷墨的印刷，以及HP Indigo数码印刷、激光碳粉印刷和传统油墨印刷，印刷适应层的厚度为0.2微米-50微米。
  9. 根据权利要求1所述的低粘自排气广告膜，其特征在于：所述离型层为PP膜、PET膜、PE膜和带有硅油或氟素离型剂的PP膜、PET 膜、PE离型膜或离型纸中的任一种。
  10. 根据权利要求1所述的低粘自排气广告膜，其特征在于：制备方法是在广告膜层的背面涂布有一层增强粘结层，然后通过离型层转移涂布法在增强粘结层上复制出规则的点胶，使点胶和点胶之间形成空隙，从而具有良好的自排气性能。
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