CN107020775B - Release film, protective film and display device - Google Patents

Release film, protective film and display device Download PDF

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Publication number
CN107020775B
CN107020775B CN201710118873.6A CN201710118873A CN107020775B CN 107020775 B CN107020775 B CN 107020775B CN 201710118873 A CN201710118873 A CN 201710118873A CN 107020775 B CN107020775 B CN 107020775B
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Prior art keywords
layer
release
film
particles
outstanding
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CN201710118873.6A
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CN107020775A (en
Inventor
沈巍
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • 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
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/283—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysiloxanes
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • B32B7/12—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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric

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  • Push-Button Switches (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Abstract

The application provides a release film, a protective film and a display device. This from type membrane is including leaving the type substrate layer and leaving the type layer, wherein, is leaving the type layer setting on the surface from the type substrate layer, is provided with a plurality of outstanding particles from keeping away from the surface from the type substrate layer on type layer, and outstanding particle is outstanding to be set up from a surface on type layer. Have outstanding particle on the surface from the type layer, and when should from the type membrane application in the protection film, outstanding particle makes to have the clearance from between type layer and the glue film, and this clearance is convenient for hot-blast flow to shorten the curing time of glue film, make the glue film just can cure soon, avoided the emergence of cull problem, and make the performance of protection film more stable.

Description

Release film, protective film and display device
Technical Field
The application relates to the field of materials, in particular to a release film, a protective film and a display device.
Background
The protective film in the prior art generally comprises a substrate and a glue layer disposed on the surface of the substrate, and the glue layer may be an acrylic coating, a silicone coating, or a polyurethane coating (also referred to as PU coating), wherein the silicone coating has good air permeability.
However, after the protective film product in the prior art is manufactured, long-time curing is required, which not only causes cost waste, but also causes unstable performance of the protective film and even adhesive residue phenomenon because the adhesive layer is not sufficiently cured.
Disclosure of Invention
The main objective of this application is to provide a from type membrane, protection film and display device to the glue film that solves among the prior art needs longer curing time's problem.
In order to achieve the above object, according to one aspect of the present application, there is provided a release film including: a release substrate layer; the release layer is arranged on the surface of the release substrate layer, a plurality of protruding particles are arranged on the surface, away from the release substrate layer, of the release layer, and the protruding particles protrude out of one surface of the release layer.
Further, the shape and size of each of the protruding particles are the same, and the protruding particles protrude from the surface of the release layer at different heights.
Further, gaps are formed between the protruding particles, the shape and the size of the protruding particles are the same, and the heights of the protruding particles protruding out of the surface of the release layer are the same.
Further, the protruding particles are all spherical particles.
Further, the protruding particles include PMMA particles and/or PU particles.
Further, the particle size of the protruding particles is 8 to 15 μm.
Further, the release layer includes a matrix in which the protruding particles are disposed, and the matrix includes silicone oil.
According to another aspect of the present application, there is provided a protective film including: a protective substrate layer; the glue layer is arranged on the surface of the protective base material layer; any one of the release films is arranged on the surface, far away from the protective substrate layer, of the adhesive layer, the surface, far away from the protective substrate layer, of the adhesive layer is arranged in contact with the surface of the release layer provided with a plurality of protruding particles, and the protruding particles enable a gap to be reserved between the release film and the adhesive layer.
Further, the adhesive layer is an acrylic layer or a polyurethane layer.
According to another aspect of the present application, there is provided a display device including the protective film described above.
Use the technical scheme of this application, have outstanding particle on the surface from the type layer, and should use in the protection film from the type membrane, outstanding particle makes has the clearance from between type layer and the glue film, and this clearance is convenient for hot-blast flow to shorten the curing time of glue film, make the glue film just can cure soon, avoided the emergence of cull problem, and make the performance of protection film more stable.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 shows a schematic structural view of a release film provided according to an exemplary embodiment of the present application;
fig. 2 shows a schematic structural diagram of a release film provided in an embodiment of the present application;
fig. 3 shows a schematic structural diagram of a release film provided in another embodiment of the present application; and
fig. 4 shows a schematic structural diagram of a protective film provided in an embodiment of the present application.
Wherein the figures include the following reference numerals:
1. a protective substrate layer; 2. a glue layer; 3. a release film; 30. protruding particles; 31. a release substrate layer; 32. and a release layer.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As described in the background of the invention, the glue layer in the protective film in the prior art requires a long curing time, and in order to solve the above technical problems, the present application provides a release film, a protective film and a display device.
In a typical embodiment of the present application, a release film is provided, as shown in fig. 1, the release film includes a release substrate layer 31 and a release layer 32, wherein the release layer 32 is disposed on a surface of the release substrate layer 31, a plurality of protruding particles 30 are disposed on a surface of the release layer 32 away from the release substrate layer 31, and the protruding particles 30 protrude from the release layer 32.
In foretell from type membrane, be provided with a plurality of outstanding particles on the surface from the type layer, when using this from type membrane in the protection film, these outstanding particles make the glue film in the protection film membrane and have the clearance from between the type layer for in the curing process, the hot-blast flow of being convenient for, thereby accelerate the curing of glue film, shorten the time of curing, reduce cost.
The formation process of the release film in the present application includes: one or more protruding particles are mixed with other raw materials of the release layer and coated on the surface of the release substrate layer to form the release layer with the protruding particles on the surface, and then the release film is formed.
The coating method may be any one of the coating methods in the prior art, and in one embodiment of the present application, a dimple coating method is selected for coating the release layer.
In an embodiment of the present invention, as shown in fig. 2, the protruding particles 30 have the same shape and size, and the protruding particles 30 protrude from the surface of the release layer 32 at different heights. When using this from type membrane in the protection film, further guaranteed the glue film through the difference of the outstanding height of outstanding particle and had great clearance from between the type layer, and then make in the curing process, the glue film with from having hot-blast flow in the clearance between the type layer, and then accelerate the process of curing.
In another embodiment of the present invention, as shown in fig. 3, gaps are formed between the protruding particles 30, the shape and the size of the protruding particles 30 are the same, and the heights of the protruding particles 30 protruding from the surface of the release layer 32 are the same. Like this through have the clearance between the outstanding particle make the glue film with from the clearance between the type layer, and then make in the curing process for hot-blast can get into the glue film and from the clearance between the type layer, and then accelerate the curing of glue film.
In order to facilitate forming the gap between the adhesive layer and the release layer, in an embodiment of the present disclosure, as shown in fig. 1 to 3, the protruding particles 30 are all spherical particles.
The release substrate layer in the present application can be independently selected from any substrate layer in the art, and one skilled in the art can select a suitable material to form the release substrate layer according to actual conditions.
In an embodiment of the present application, in order to enable the release substrate layer to better protect the release layer, the release substrate layer 31 is selected from a PET layer, a PE layer, or a PC layer.
In order to make the protruding particles protrude from the release layer better, in an embodiment of the present application, the protruding particles include PMMA particles and/or PU particles.
However, the particles are not limited to the above-mentioned protruding particles, and those skilled in the art can select protruding particles formed of an appropriate material, silicone particles, or inorganic particles such as silica particles, calcium carbonate particles, or titanium oxide particles according to the actual circumstances.
In order to further ensure the protruding particles protrude from the release layer, in an embodiment of the present application, the protruding particles 30 have a particle size of 8 to 15 μm.
In still another embodiment of the present application, the raw material of the release layer includes silicone oil. Specifically, vinyl siloxane macromolecules (not limited to this) may be used. The protruding particles can be better attached to the material, and the release layer is further ensured to have a concave-convex surface.
But not limited to the above release layer, those skilled in the art can select a release layer formed of a suitable material according to the actual situation.
In another exemplary embodiment of the present application, there is provided a protective film, as shown in fig. 4, including a protective substrate layer 1, a glue layer 2, and any one of the above-described release films 3. Wherein, the glue layer 2 is arranged on the surface of the protective substrate layer 1; the release film 3 is disposed on the surface of the adhesive layer 2 away from the protective substrate layer 1, and the surface of the adhesive layer 2 away from the protective substrate layer 1 is disposed in contact with the surface of the release layer 32 provided with a plurality of protruding particles 30, and the protruding particles 30 allow a gap to be formed between the release film 3 and the adhesive layer 2.
In the protective film, the protruding particles are arranged on the surface of the release layer, the protruding particles enable a gap to be formed between the release layer and the glue layer, hot air flows conveniently through the gap, accordingly, the curing time of the glue layer is shortened, the glue layer can be cured quickly, the problem of adhesive residue is avoided, and the performance of the protective film is more stable.
The manufacture process of protection film in this application is to laminate from type membrane and the glue film that is provided with the protection substrate layer, and makes the glue film and the one side surface contact setting that is provided with outstanding particle from the type layer.
The glue layer in this application can select the glue layer of any material in the prior art, and the glue layer of suitable material can be selected according to the actual conditions to the skilled person.
In another embodiment of the present application, the adhesive layer is an acrylic layer or a polyurethane coating. Acrylic layer or polyurethane coating. These glue layers have a better bonding effect.
In still another embodiment of the present application, the above protective substrate layer 1 is selected from a PET layer, a PE layer, or a PC layer.
The release substrate layer and the protective substrate layer in the present application may be the same or different, and those skilled in the art may set the same or different layers according to actual situations.
The protective substrate layer can protect other structural layers in the protective film, and the protective film is convenient to effectively store, so that the performance of the protective film is prevented from being reduced due to storage.
In another exemplary embodiment of the present application, there is provided a display device including the protective film described above.
The display device has long service life and good display performance due to the protection film.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the following description will be given with reference to specific embodiments.
Example 1
The manufacturing process of the protective film comprises the following steps:
first, a release film is produced.
And coating a mixture of the matrix and the protruding particles on the surface of the release substrate layer by adopting a micro-concave coating method, forming a release layer on the surface of the release substrate layer, and further forming a release film.
And secondly, coating the raw material of the adhesive layer on the surface of the protective substrate layer to form the adhesive layer.
And finally, attaching the release film to the adhesive layer arranged on the surface of the protective substrate layer and curing the adhesive layer at 50 ℃ under a constant humidity condition to form the protective film, so as to form the protective substrate layer, the adhesive layer, the release layer and the release substrate layer which are sequentially arranged from bottom to top, wherein the structure of the release film is shown in figure 1.
The protective substrate layer and the release substrate layer are both PET layers, the thickness is 100 micrometers, the adhesive layer is an acrylic layer, the thickness is 15 micrometers, the release layer comprises protruding particles and a base body, the base body is vinyl siloxane, the thickness of the release layer is 4 micrometers, the height of the protruding particles protruding from the surface of the release layer is not included in the partial thickness, the protective substrate layer and the release substrate layer comprise PMMA particles and PU particles, the PMMA particles and the PU particles are spherical particles, the particle size of the PMMA particles is 8-10 micrometers, and the particle size of the PU particles is 13-15 micrometers.
Example 2
The difference from example 1 is that the structure of the release film is shown in FIG. 3, and the protruding particles are PU particles with a particle size of 10-13 μm.
Example 3
The difference from example 2 is that the PU particles have a particle size of 5 to 8 μm.
Example 4
The difference from example 2 is that the protruding particles are calcium carbonate particles.
Comparative example
The difference from example 2 is that the surface of the release layer is not provided with protruding particles.
The curing time of the protective films of the above examples and comparative examples was different, and the specific test results are shown in table 1.
TABLE 1
Maturation time (h)
Example 1 52
Example 2 60
Example 3 62
Example 4 60
Comparative example 72
As can be seen from the data of table 1, the examples have shorter aging time due to the protruding particles provided in the release layer, compared to the comparative example; compared with the embodiments 2 to 4, in the embodiment 1, the protruding particles protrude from the surface of the release layer at different heights, so that the gap between the adhesive layer and the release layer is larger, and the curing time of the protective film is shorter; compared with example 2, the protruding particles of example 3 have smaller particle size, and further the gap between the adhesive layer and the release layer is smaller, so that the curing time of the protective film is relatively longer.
From the above description, it can be seen that the above-described embodiments of the present application achieve the following technical effects:
1) the utility model provides an in the release film, be provided with a plurality of outstanding particles on the surface from the type layer, when using this release film in the protection film, these outstanding particles make the glue film in the protection film membrane with have the clearance from between the type layer for in the curing process, the hot-blast flow of being convenient for, thereby accelerate the curing of course, shorten the time of curing, reduce the cost.
2) In the protection film of this application, have outstanding particle on the surface from the type layer, and outstanding particle makes to have the clearance from between type layer and the glue film, and this clearance is convenient for hot-blast flow to shorten the curing time of glue film, make the glue film just can cure soon, avoided the emergence of cull problem, and make the performance of protection film more stable.
3) The display device in this application is because including foretell protection film, its life-span is longer, and the display performance is better.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (7)

1. A release film, comprising:
a release substrate layer (31); and
from type layer (32), the setting is in on the surface from type substrate layer (31), keep away from type layer (32) the surface from type substrate layer (31) is provided with a plurality of outstanding particles (30), just outstanding particle (30) are outstanding from the surface setting of type layer (32), each the shape and the size of outstanding particle (30) are all the same, just outstanding particle (30) are outstanding highly different from type layer (32) surface, outstanding particle (30) are spherical particle.
2. Release film according to claim 1, characterized in that the protruding particles (30) comprise PMMA particles and/or PU particles.
3. The release film according to claim 1, wherein the protruding particles (30) have a particle size of 8 to 15 μm.
4. Release film according to claim 1, characterized in that the release layer (32) comprises a matrix in which the protruding particles (30) are arranged, the matrix comprising silicone oil.
5. A protective film, characterized in that the protective film comprises:
a protective base material layer (1);
the glue layer (2) is arranged on the surface of the protective base material layer (1); and
release film (3) according to any one of claims 1 to 4, provided on a surface of the glue layer (2) remote from the protective substrate layer (1), and the surface of the glue layer (2) remote from the protective substrate layer (1) is provided in surface contact with a release layer (32) provided with a plurality of protruding particles (30), the protruding particles (30) being such that there is a gap between the release film (3) and the glue layer (2).
6. Protective film according to claim 5, characterised in that the glue layer (2) is an acrylic or polyurethane layer.
7. A display device comprising a protective film, characterized in that the protective film is the protective film according to claim 5 or 6.
CN201710118873.6A 2017-03-01 2017-03-01 Release film, protective film and display device Active CN107020775B (en)

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Application Number Priority Date Filing Date Title
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CN107020775B true CN107020775B (en) 2020-03-03

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103242548A (en) * 2012-02-09 2013-08-14 爱思开哈斯显示用薄膜有限公司 Silicone release film with improved release performance and anti-adhesion performance
CN103958194A (en) * 2011-12-09 2014-07-30 Cp菲林公司 Modified release coatings for optically clear film
CN106553395A (en) * 2015-09-25 2017-04-05 藤森工业株式会社 The excellent mould release membrance of fissility

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10742A (en) * 1996-06-17 1998-01-06 Toyo Metallizing Co Ltd Release film
JP2000185371A (en) * 1998-12-24 2000-07-04 Nippon Paper Industries Co Ltd Surface protective sheet with excellent blocking preventiveness
JP2004255704A (en) * 2003-02-26 2004-09-16 Teijin Dupont Films Japan Ltd Release film
JP2016168691A (en) * 2015-03-11 2016-09-23 ユニチカ株式会社 Release sheet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103958194A (en) * 2011-12-09 2014-07-30 Cp菲林公司 Modified release coatings for optically clear film
CN103242548A (en) * 2012-02-09 2013-08-14 爱思开哈斯显示用薄膜有限公司 Silicone release film with improved release performance and anti-adhesion performance
CN106553395A (en) * 2015-09-25 2017-04-05 藤森工业株式会社 The excellent mould release membrance of fissility

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