CN106183121A - A kind of protecting film and preparation method thereof - Google Patents
A kind of protecting film and preparation method thereof Download PDFInfo
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- CN106183121A CN106183121A CN201610570084.1A CN201610570084A CN106183121A CN 106183121 A CN106183121 A CN 106183121A CN 201610570084 A CN201610570084 A CN 201610570084A CN 106183121 A CN106183121 A CN 106183121A
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- Prior art keywords
- layer
- flexible glue
- ebonite
- protecting film
- glue
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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
- B32B7/06—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
- 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
- B32B27/32—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
- 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
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/308—Heat stability
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/208—Touch screens
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
The present invention provides a kind of protecting film, including cuticular layer；The UV ebonite layer being compounded on described cuticular layer；The use UV flexible glue layer being compounded on described UV ebonite layer；It is compounded in the use substrate layer on described use UV flexible glue layer；It is compounded in the use adhesive-layer on described use substrate layer；With the peel ply being compounded on described use adhesive-layer；The hardness ＜ 1H of described use UV flexible glue layer.The present invention is by one layer of UV flexible glue layer of topcoating under UV ebonite layer, make use layer hardness from down to be gradually lowered, reduce the integral hardness using layer simultaneously, utilize and use adhesive-layer to prevent it from having a rebound with UV flexible glue layer memory function after hot-pressing, effectively prevent corner, UV face from the situation of broken silk occurring.Test result indicate that, the protecting film hot press performance in the present invention is excellent.Shaping performance lasting stability after hot pressing.Present invention also offers the preparation method of a kind of protecting film.
Description
Technical field
The invention belongs to technical field of polymer materials, particularly relate to a kind of protecting film and preparation method thereof.
Background technology
Along with electron trade develops, for the more preferable visual experience of screen, many smart mobile phones are by edge and and screen glass
It is designed as arc.Along with having touch screen universal on arc limit, the protecting film on arc limit of can fitting has great market.
Include cuticular layer in protecting film structure in the market successively, use layer and peel ply, conventional protecting film to make
With layer includes UV ebonite layer, substrate layer and adhesive-layer the most successively, during thermocompression forming, because UV ebonite layer is hard
Degree, the UV glue of its corner, arc limit there will be fragmentation phenomenon, the phenomenon and product hot-forming backarc limit metropolis has a rebound, no
Energy permanent shaping, so can cause can not preferably protecting the arc limit of screen.
Summary of the invention
It is an object of the invention to provide a kind of protecting film and preparation method thereof, the protecting film in the present invention is at hot pressing
In will not after fragmentation, and hot pressing style-ability lasting.
The present invention provides a kind of protecting film, including cuticular layer；
The UV ebonite layer being compounded on described cuticular layer；
The use UV flexible glue layer being compounded on described UV ebonite layer；
It is compounded in the use substrate layer on described use UV flexible glue layer；
It is compounded in the use adhesive-layer on described use substrate layer；
With the peel ply being compounded on described use adhesive-layer；
The hardness ＜ 1H of described use UV flexible glue layer.
Preferably, the thickness of described UV ebonite layer is 1～10 μm.
Preferably, the hardness of described UV ebonite layer is 1H～5H.
Preferably, the thickness of described use UV flexible glue layer is 1～10 μm.
Preferably, described use substrate layer is polyethylene terephthalate substrate layer, PEN base
One or more in sheet material layers, polycarbonate substrate layer, polypropylene-base sheet material layers and polyvinyl sheet material layers.
Preferably, the thickness of described use substrate layer is 50～150 μm.
Preferably, described use adhesive-layer is silicone pressure sensitive glue-line；
The thickness of described use adhesive-layer is 20～100 μm.
Preferably, described peel ply includes stripping group sheet material layers and peels off UV flexible glue layer；Described stripping UV flexible glue layer is with described
Use adhesive-layer is combined.
Preferably, the hardness ＜ 1H of described stripping UV flexible glue layer；
The thickness of described stripping UV flexible glue layer is 1～10 μm.
The present invention provides the preparation method of a kind of protecting film, comprises the following steps:
A) by UV flexible glue glue-coating in the one side using base material, after ultraviolet light polymerization, obtain being compounded with use UV soft
The use base material of glue-line；The hardness ＜ 1H of described use UV flexible glue layer；
B) by UV ebonite glue-coating on described UV flexible glue layer, carry out ultraviolet light polymerization, obtain UV ebonite layer；
C) another side at described use base material is coated with viscose glue glue, obtains after drying using adhesive-layer；
D) at described use adhesive-layer surface recombination peel ply, at described UV ebonite layer surface recombination cuticular layer, protected
Cuticula.
The present invention provides a kind of protecting film, including cuticular layer；The UV ebonite layer being compounded on described cuticular layer；It is compounded in institute
State the use UV flexible glue layer on UV ebonite layer；It is compounded in the use substrate layer on described use UV flexible glue layer；Make described in being compounded in
With the use adhesive-layer on substrate layer；With the peel ply being compounded on described use adhesive-layer；Described use UV flexible glue layer hard
Degree ＜ 1H.In the present invention, described UV ebonite layer, use UV flexible glue layer, use substrate layer and use adhesive-layer constitute use
Layer, more than the stress of following glue-line, thus can there is heat in the stress using layer above glue-line after hot-pressing of common protecting film
Rebound phenomenon after pressure, the present invention by one layer of UV flexible glue layer of topcoating under UV ebonite layer, make use the hardness of layer from down to
Under be gradually lowered, utilize use adhesive-layer prevent it from having a rebound with UV flexible glue layer memory function after hot-pressing.Meanwhile, pass through
UV flexible glue layer reduces the integral hardness using layer, it is possible to effectively prevent product corner, UV face in hot pressing from broken silk occur
Situation.Test result indicate that, the protecting film hot press performance in the present invention is excellent.Shaping performance after hot pressing persistently and is stablized,
Resilience will not be produced and do not have the corner fragmentation of UV face.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is the structural representation of protecting film in the present invention.
Wherein, 1 is cuticular layer, and 11 is cuticula substrate layer, and 12 is cuticula adhesive-layer；2 for using layer, and 21 is UV ebonite layer,
22 for using UV flexible glue layer, and 23 for using substrate layer, and 24 for using adhesive-layer；3 is peel ply, and 31 for peeling off UV flexible glue layer, 32
For stripping group sheet material layers.
Detailed description of the invention
The present invention provides a kind of protecting film, including cuticular layer；
The UV ebonite layer being compounded on described cuticular layer；
The use UV flexible glue layer being compounded on described UV ebonite layer；
It is compounded in the use substrate layer on described use UV flexible glue layer；
It is compounded in the use adhesive-layer on described use substrate layer；
With the peel ply being compounded on described use adhesive-layer；
The hardness ＜ 1H of described use UV flexible glue layer.
In the present invention, described cuticular layer includes cuticula substrate layer and the cuticula viscose glue being compounded on described cuticula substrate layer
Layer, the another side of described cuticula adhesive-layer is combined with each other with described UV ebonite layer, i.e. described cuticula adhesive-layer be clipped in described in protect
Between film base material layer and described UV ebonite layer.
In the present invention, described cuticula substrate layer is preferably polyethylene terephthalate substrate layer (pet layer), poly-naphthalene two
Formic acid glycol ester substrate layer (PEN layer), polycarbonate substrate layer (PC layer), polypropylene-base sheet material layers (PP layer) and polyethylene base material
One or more in layer (PE layer)；The thickness of described cuticula substrate layer is preferably 20～200 μm, more preferably 30～180 μm,
Most preferably 50～100 μm, concrete, in an embodiment of the present invention, can be 50 μm；Beijing Kang get Xin can be selected to be combined
The optical grade PET base material that material limited company provides.
In the present invention, described cuticula adhesive-layer is preferably silicone pressure sensitive glue-line, is made up of organic pressure-sensitive gel, specifically
, in an embodiment of the present invention, the organic pressure-sensitive gel of 6040 models that Dow Corning Corporation provides can be used.Described cuticula glues
The thickness of glue-line is preferably 5～20 μm, and more preferably 10～15 μm are concrete, in an embodiment of the present invention, can be 10 μ
m。
In the present invention, described UV ebonite layer is compounded on the cuticula adhesive-layer of described cuticular layer, described UV ebonite layer by
UV ebonite glue is made, and described UV ebonite glue is UV type acrylic resin glue or UV type polyurethane resin；The present invention is to institute
The source stating UV ebonite glue does not has special restriction, concrete, in an embodiment of the present invention, the triumphant Tonghua of Korea S can be used to learn
The CHTU-2543 type UV ebonite glue that company limited provides.The hardness of described UV ebonite layer is preferably 1H～5H (under 500g pressure
Do pencil test), preferably 2H～4H, concrete, in an embodiment of the present invention, can be 1H, 2H, 3H, 4H or 5H；Described
The thickness of UV ebonite layer is preferably 1～10 μm, more preferably 2～9 μm, and most preferably 3～8 μm are concrete, in the reality of the present invention
Execute in example, can be 3 μm, 4 μm or 5 μm.
In the present invention, described use UV flexible glue layer is compounded on described UV ebonite layer, i.e. described UV ebonite layer is clipped in institute
State between cuticula adhesive-layer and described UV flexible glue layer.Described use UV flexible glue layer is made up of UV flexible glue glue, described UV flexible glue glue
Liquid is UV type acrylic resin glue or UV type polyurethane resin；It is special that the source of described UV flexible glue glue is not had by the present invention
Limit, concrete, in an embodiment of the present invention, the LOCTITE3381 that Henkel Loctite (Chinese) company limited provides can be used
Glue.The hardness of described use UV flexible glue layer is preferably smaller than 1H (doing pencil test under 500g pressure)；Described use UV flexible glue layer
Thickness be preferably 1～10 μm, more preferably 2～9 μm, most preferably 3～8 μm, concrete, in an embodiment of the present invention,
Can be 2 μm or 3 μm.
In the present invention, described use substrate layer is compounded on described use UV flexible glue layer, i.e. described use UV flexible glue layer
It is clipped in described UV ebonite layer and uses between substrate layer.Described use substrate layer is preferably polyethylene terephthalate substrate layer
(pet layer), PEN substrate layer (PEN layer), polycarbonate substrate layer (PC layer), polypropylene-base sheet material layers (PP
Layer) and polyvinyl sheet material layers (PE layer) in one or more；The light transmittance of described use substrate layer is preferably more than 91%, more
It is preferably more than 93%, most preferably more than 95%；The thickness of described use substrate layer is preferably 50～150 μm, more preferably
80～130 μm, most preferably 100～120 μm, concrete, in an embodiment of the present invention, can be 50 μm；North can be selected
The optical grade PET base material that Jing Kang get Xin composite limited company provides.
In the present invention, described use adhesive-layer is compounded on described use substrate layer, i.e. described use substrate layer is clipped in
Between described use UV flexible glue layer and use adhesive-layer.Described use adhesive-layer is preferably silicone pressure sensitive glue-line, by organosilicon
Pressure sensitive adhesive is made, concrete, in an embodiment of the present invention, can use the organosilicon pressure of 6040 models that Dow Corning Corporation provides
Quick glue.The thickness of described use adhesive-layer is preferably 20～100 μm, more preferably 30～80 μm, most preferably 40～70 μm, tool
Body, in an embodiment of the present invention, can be 50 μm.
Above-mentioned UV ebonite layer, use UV flexible glue layer, use substrate layer and use adhesive-layer together constitute making of protecting film
With layer.
In the present invention, described peel ply preferably includes peel off UV flexible glue layer and be compounded on described stripping UV flexible glue layer
Stripping group sheet material layers, described stripping UV flexible glue layer is combined with each other with the use adhesive-layer in described use layer.Common protecting film
Peel ply is only one layer substrate layer, and the present invention by being coated with one layer of UV flexible glue layer on substrate layer surface, by its UV flexible glue layer
Memory function alleviate the resilience of PET base material, the thermocompression forming making product overall is the most lasting.
In the present invention, described stripping UV flexible glue layer is made up of UV flexible glue glue, and described UV flexible glue glue is UV type propylene
Acid resin glue or UV type polyurethane resin；The present invention does not has special restriction to the source of described UV flexible glue glue, concrete,
In an embodiment of the present invention, the LOCTITE3381 glue that Henkel Loctite (Chinese) company limited provides can be used.Described stripping
The hardness of UV flexible glue layer is preferably smaller than 1H (doing pencil test under 500g pressure)；The thickness of described stripping UV flexible glue layer is preferably 1
～10 μm, more preferably 2～9 μm, most preferably 3～8 μm, concrete, in an embodiment of the present invention, can be 2 μm or 3 μ
m。
In the present invention, described stripping group sheet material layers is preferably polyethylene terephthalate substrate layer (pet layer), poly-naphthalene two
Formic acid glycol ester substrate layer (PEN layer), polycarbonate substrate layer (PC layer), polypropylene-base sheet material layers (PP layer) and polyethylene base material
One or more in layer (PE layer)；The thickness of described stripping group sheet material layers is preferably 20～200 μm, more preferably 50～180 μm,
Most preferably 80～150 μm, concrete, in an embodiment of the present invention, can be 50 μm；Beijing Kang get Xin can be selected to be combined
The optical grade PET base material that material limited company provides.
Present invention also offers the preparation method of a kind of protecting film, comprise the following steps:
A) by UV flexible glue glue-coating in the one side using base material, after ultraviolet light polymerization, obtain being compounded with use UV soft
The use base material of glue-line；The hardness ＜ 1H of described use UV flexible glue layer；
B) by UV ebonite glue-coating on described UV flexible glue layer, carry out ultraviolet light polymerization, obtain UV ebonite layer；
C) another side at described use base material is coated with viscose glue glue, obtains after drying using adhesive-layer；
D) at described use adhesive-layer surface recombination peel ply, at described UV ebonite layer surface recombination cuticular layer, protected
Cuticula.
UV flexible glue glue-coating is first being used the one side of base material by the present invention, obtains being compounded with use after ultraviolet light polymerization
The use base material of UV flexible glue layer, the present invention is the most first coated with the use base material of UV flexible glue glue and is dried, and removes glue
In solvent, carry out ultraviolet light polymerization the most again, obtain being compounded with the use base material using UV flexible glue layer.In the present invention, institute
State UV flexible glue glue and use the kind of base material and the kind and source with UV flexible glue glue above and using base material of originating
Unanimously, do not repeat them here.
In the present invention, the temperature of described drying is preferably 80～120 DEG C, more preferably 100～110 DEG C；Described drying
Time be preferably 40～80s, more preferably 50～70s, most preferably 60～65s；Present invention preferably employs baking box and carry out institute
State drying.The ultraviolet ray intensity of described ultraviolet light polymerization is preferably 400～700mJ/cm2, more preferably 500～600mJ/cm2；
The time of described ultraviolet light polymerization is preferably 1～5s, more preferably 2～4s, most preferably 3s.Present invention preferably employs UV lamp to shine
Penetrate and make it solidify.Present invention preferably employs running roller or intaglio plate carries out described coating, the most micro-gravure roller coating.
After obtaining being compounded with the use base material using UV flexible glue layer, the present invention is in described use UV soft film surface coating UV
Ebonite glue, obtains UV ebonite layer after ultraviolet light polymerization.The present invention is the most first coated with the use base material of UV ebonite glue
It is dried, removes the solvent in glue, carry out ultraviolet light polymerization the most again, obtain UV ebonite layer.In the present invention, described UV
Kind and source that the kind of ebonite glue with UV ebonite glue above and uses base material with source are consistent, the most superfluous at this
State.
In the present invention, the temperature of described drying is preferably 80～120 DEG C, more preferably 100～110 DEG C；Described drying
Time be preferably 40～80s, more preferably 50～70s, most preferably 60～65s；Present invention preferably employs baking box and carry out institute
State drying.The ultraviolet ray intensity of described ultraviolet light polymerization is preferably 400～700mJ/cm2, more preferably 500～600mJ/cm2；
The time of described ultraviolet light polymerization is preferably 1～5s, more preferably 2～4s, most preferably 3s.Present invention preferably employs UV lamp to shine
Penetrate and make it solidify.Present invention preferably employs running roller or intaglio plate carries out described coating, the most micro-gravure roller coating.
After obtaining UV ebonite layer, the present invention is coated with at the another side of described use base material and uses viscose glue glue, dried
To using adhesive-layer, in the present invention, described use viscose glue is preferably organic pressure-sensitive gel, described use viscose glue
The source deriving from adhesive-layer used above is consistent, does not repeats them here.In the present invention, described dry temperature is preferably
130～200 DEG C, more preferably 140～180 DEG C, most preferably 150～160 DEG C；The described dry time be preferably 100～
150s, more preferably 110～140s, most preferably 120～130s；The present invention preferably carries out described being dried by baking box.This
Bright preferably by scraper or Slot-Die by described viscose glue glue-coating at the another side of described use base material.
After obtaining using adhesive-layer, the present invention has prepared use layer, cuticular layer and peel ply is combined the most respectively
On the two sides of described use layer, i.e. obtain the protecting film in the present invention.
The present invention preferably shows UV flexible glue glue-coating in peeling base, obtains successively after drying and ultraviolet light polymerization
Peel ply, in the present invention, the kind of described UV flexible glue glue and peeling base and derive from above peel off UV flexible glue layer and
The source of stripping group sheet material layers is consistent, does not repeats them here.Present invention preferably employs running roller or intaglio plate carries out described coating, the most micro-
Gravure roller coating.In the present invention, the temperature of described drying is preferably 80～120 DEG C, more preferably 100～110 DEG C；Described drying
Time be preferably 40～80s, more preferably 50～70s, most preferably 60～65s；Present invention preferably employs baking box and carry out institute
State drying.The ultraviolet light exposure rate of described ultraviolet light polymerization is preferably 400～700mJ/cm2, more preferably 500～600mJ/
cm2；The time of described ultraviolet light polymerization is preferably 1～5s, more preferably 2～4s, most preferably 3s.Present invention preferably employs UV
Light irradiation makes it solidify.
After obtaining peel ply, described peel ply is compounded in the surface of described use adhesive-layer by the present invention, obtains using layer
Two layers of composite membrane with peel ply.
Organic pressure-sensitive gel is preferably coated on the surface of described cuticula base material by the present invention by scraper or Slot-Die,
Described cuticula substrate surface forms cuticula mucigel, and oven-dried doubling roller the most excessively, by described cuticula adhesive-layer and described UV
Ebonite laminating closes, and obtains protecting film.
The present invention provides a kind of protecting film, including cuticular layer；The UV ebonite layer being compounded on described cuticular layer；It is compounded in institute
State the use UV flexible glue layer on UV ebonite layer；It is compounded in the use substrate layer on described use UV flexible glue layer；Make described in being compounded in
With the use adhesive-layer on substrate layer；With the peel ply being compounded on described use adhesive-layer；Described use UV flexible glue layer hard
Degree ＜ 1H.In the present invention, described UV ebonite layer, use UV flexible glue layer, use substrate layer and use adhesive-layer constitute use
Layer, more than the stress of following glue-line, thus can there is heat in the stress using layer above glue-line after hot-pressing of common protecting film
Rebound phenomenon after pressure, the present invention by one layer of UV flexible glue layer of topcoating under UV ebonite layer, make use the hardness of layer from down to
Under be gradually lowered, utilize use adhesive-layer prevent it from having a rebound with UV flexible glue layer memory function after hot-pressing.Meanwhile, pass through
UV flexible glue layer reduces the integral hardness using layer, it is possible to effectively prevent product corner, UV face in hot pressing from broken silk occur
Situation.Test result indicate that, the protecting film hot press performance in the present invention is excellent.Shaping performance after hot pressing persistently and is stablized,
Resilience will not be produced and do not have the corner fragmentation of UV face.
In order to further illustrate the present invention, a kind of protecting film present invention provided below in conjunction with embodiment and preparation side thereof
Method is described in detail, but can not be understood as limiting the scope of the present invention.
In the examples below, base material all uses the optics level PET base of Beijing kangde xin composite material Co., Ltd.
Material；Organic pressure-sensitive gel is 6040 type organic pressure-sensitive gels of Dow Corning Corporation；UV ebonite glue is that the triumphant Tonghua of Korea S is learned limited
The CHTU-2543 type UV ebonite glue that company provides；UV flexible glue glue Henkel Loctite (Chinese) company limited provides
LOCTITE3381 glue.
Embodiment 1
By nick roller by UV flexible glue glue application in 50 μm optical grade PET base material, then dry through 100 DEG C of baking boxs
60s dry out solvent, then crosses UV lamp, at 500mJ/cm2Lower irradiation 3s so that it is be fully cured, obtains UV flexible glue coating, thickness 2 μ
m。
Then at UV flexible glue coating surface by micro-gravure roller coating UV ebonite glue, 100 DEG C of baking boxs dry 60s dries molten
Agent, then crosses UV lamp, at 500mJ/cm2Lower irradiation 3s so that it is being fully cured, obtain UV ebonite coating, thickness is 3 μm
By organic pressure-sensitive gel by scraper for coating on the back side of base material, dry in the baking box of 150 DEG C after 120s
Adhesive-layer to 50 μ m-thick.So far obtain using layer.
Separately take the PET base material of one 50 μ m-thick, by nick roller by UV flexible glue glue application in this PET base material, exist successively
Heat cure 60s at 100 DEG C, at 500mJ/cm2Lower irradiation 3s obtains peel ply after making its photocuring, wherein, and the UV on peel ply
Flexible glue layer thickness 3 μm.By using the adhesive-layer in layer to be combined with the UV flexible glue layer in peel ply, obtain two layers of composite membrane.
Separately take the PET base material after one 50 μm, by organic pressure-sensitive gel by scraper for coating in this substrate surface, through baking box
Cuticular layer, wherein adhesive-layer thickness 10 μm in cuticular layer is obtained, by the adhesive-layer in cuticular layer and two layers of composite membrane after solidification
UV ebonite coating laminating, obtain protecting film.
Embodiment 2
By nick roller by UV flexible glue glue application in 100 μm optical grade PET base material, then dry through 80 DEG C of baking boxs
50s dry out solvent, then crosses UV lamp, at 400mJ/cm2Lower irradiation 5s so that it is be fully cured, obtains UV flexible glue coating, thickness 3 μ
m。
Then at UV flexible glue coating surface by micro-gravure roller coating UV ebonite glue, 100 DEG C of baking boxs dry 80s dries molten
Agent, then crosses UV lamp, at 600mJ/cm2Lower irradiation 2s so that it is being fully cured, obtain UV ebonite coating, thickness is 5 μm
By organic pressure-sensitive gel by scraper for coating on the back side of base material, dry in the baking box of 130 DEG C after 150s
Adhesive-layer to 50 μ m-thick.So far obtain using layer.
Separately take the PET base material of one 50 μ m-thick, by nick roller by UV flexible glue glue application in this PET base material, exist successively
Heat cure 60s at 100 DEG C, at 400mJ/cm2Lower irradiation 4s obtains peel ply after making its photocuring, wherein, and the UV on peel ply
Flexible glue layer thickness 2 μm.By using the adhesive-layer in layer to be combined with the UV flexible glue layer in peel ply, obtain two layers of composite membrane.
Separately take the PET base material after one 80 μm, by organic pressure-sensitive gel by scraper for coating in this substrate surface, through baking box
Cuticular layer, wherein adhesive-layer thickness 10 μm in cuticular layer is obtained, by the adhesive-layer in cuticular layer and two layers of composite membrane after solidification
UV ebonite coating laminating, obtain protecting film.
Embodiment 3
By nick roller by UV flexible glue glue application in 50 μm optical grade PET base material, then dry through 120 DEG C of baking boxs
80s dry out solvent, then crosses UV lamp, at 600mJ/cm2Lower irradiation 2s so that it is be fully cured, obtains UV flexible glue coating, thickness 5 μ
m。
Then 70s dry out solvent is dried at UV flexible glue coating surface by micro-gravure roller coating UV ebonite glue, 80 DEG C of baking boxs,
Then UV lamp is crossed, at 400mJ/cm2Lower irradiation 5s so that it is being fully cured, obtain UV ebonite coating, thickness is 6 μm
By organic pressure-sensitive gel by scraper for coating on the back side of base material, dry in the baking box of 160 DEG C after 150s
Adhesive-layer to 40 μ m-thick.So far obtain using layer.
Separately take the PET base material of one 50 μ m-thick, by nick roller by UV flexible glue glue application in this PET base material, exist successively
Heat cure 70s at 110 DEG C, at 500mJ/cm2Lower irradiation 3s obtains peel ply after making its photocuring, wherein, and the UV on peel ply
Flexible glue layer thickness 5 μm.By using the adhesive-layer in layer to be combined with the UV flexible glue layer in peel ply, obtain two layers of composite membrane.
Separately take the PET base material after one 50 μm, by organic pressure-sensitive gel by scraper for coating in this substrate surface, through baking box
Cuticular layer, wherein adhesive-layer thickness 10 μm in cuticular layer is obtained, by the adhesive-layer in cuticular layer and two layers of composite membrane after solidification
UV ebonite coating laminating, obtain protecting film.
Protecting film heat pressing forming machines in embodiment 1～3 is carried out hot-forming by the present invention, uses 2.5D arc limit mould
Tool, heats 3.6s, hot-forming 6s at 260 DEG C.Sampling has carried out performance test, and result is as shown in table 1.
The performance data of protecting film in table 1 embodiment of the present invention 1～3
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a protecting film, including cuticular layer；
The UV ebonite layer being compounded on described cuticular layer；
The use UV flexible glue layer being compounded on described UV ebonite layer；
It is compounded in the use substrate layer on described use UV flexible glue layer；
It is compounded in the use adhesive-layer on described use substrate layer；
With the peel ply being compounded on described use adhesive-layer；
The hardness ＜ 1H of described use UV flexible glue layer.
Protecting film the most according to claim 1, it is characterised in that the thickness of described UV ebonite layer is 1～10 μm.
Protecting film the most according to claim 1, it is characterised in that the hardness of described UV ebonite layer is 1H～5H.
Protecting film the most according to claim 1, it is characterised in that the thickness of described use UV flexible glue layer is 1～10 μm.
Protecting film the most according to claim 1, it is characterised in that described use substrate layer is polyethylene terephthalate
In substrate layer, PEN substrate layer, polycarbonate substrate layer, polypropylene-base sheet material layers and polyvinyl sheet material layers
One or more.
Protecting film the most according to claim 1, it is characterised in that the thickness of described use substrate layer is 50～150 μm.
Protecting film the most according to claim 1, it is characterised in that described use adhesive-layer is silicone pressure sensitive glue-line；
The thickness of described use adhesive-layer is 20～100 μm.
8. according to the protecting film described in claim 1～7 any one, it is characterised in that described peel ply includes peeling base
Layer and stripping UV flexible glue layer；Described stripping UV flexible glue layer is combined with described use adhesive-layer.
Protecting film the most according to claim 8, it is characterised in that the hardness ＜ 1H of described stripping UV flexible glue layer；
The thickness of described stripping UV flexible glue layer is 1～10 μm.
10. a preparation method for protecting film, comprises the following steps:
A) by UV flexible glue glue-coating in the one side using base material, obtain being compounded with use UV flexible glue layer after ultraviolet light polymerization
Use base material；The hardness ＜ 1H of described use UV flexible glue layer；
B) by UV ebonite glue-coating on described UV flexible glue layer, carry out ultraviolet light polymerization, obtain UV ebonite layer；
C) another side at described use base material is coated with viscose glue glue, obtains after drying using adhesive-layer；
D) at described use adhesive-layer surface recombination peel ply, at described UV ebonite layer surface recombination cuticular layer, protecting film is obtained.
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| CN115058211A (en) * | 2022-07-25 | 2022-09-16 | 惠州合益创光学材料有限公司 | Curved surface protection film |
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| CN106183121B (en) | 2018-07-13 |
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