CN107936860A - A kind of flexible full bag mantle and preparation method thereof - Google Patents
A kind of flexible full bag mantle and preparation method thereof Download PDFInfo
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- CN107936860A CN107936860A CN201710994760.2A CN201710994760A CN107936860A CN 107936860 A CN107936860 A CN 107936860A CN 201710994760 A CN201710994760 A CN 201710994760A CN 107936860 A CN107936860 A CN 107936860A
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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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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Abstract
The present invention relates to protection technical field of membrane; more particularly to a kind of flexible full bag mantle and preparation method thereof; cuticular layer that the full bag mantle of the flexibility includes being bonded successively from top to bottom, using layer and peel ply; the cuticular layer includes the substrate layer and cuticula glue-line being bonded successively from top to bottom; the reconditioning layer for including being bonded successively from top to bottom using layer, flexible mantle layer and using glue-line; the lower surface of cuticula glue-line is bonded with the upper surface of reconditioning layer, is bonded using the lower surface of glue-line with the upper surface of peel ply.The full bag mantle feel of flexibility of the present invention is smooth, and peeling force is big, and Curved screen can be wrapped up comprehensively, has preferable resilience and selfreparing effect, can be repaired automatically to scratching trace, extends the service life of flexible full bag mantle.The preparation method of the present invention is simple, convenient operation and control, simplifies traditional production technology, and production efficiency is high, and production cost is low, and obtained product yield is high, stable quality, is adapted to large-scale industrial production.
Description
Technical field
The present invention relates to protection technical field of membrane, and in particular to a kind of flexible full bag mantle and preparation method thereof.
Background technology
As screen arc is while for the popularization of the electronic device designed when 2.5D, 3D arc, and the mobile electron of bending type
The development of terminal device, is required for protective film to protect screen, and current protective film has preferable flexibility more, but
The more soft then easier scuffing of protective film, caused by scratch trace and not only influence the appearance of protective film, but also protective film can be influenced
Normal use.Protective film cohesive force current at the same time is relatively low, glues glutinous insecure so that and protective film easily comes off from screen,
And easily there is phenomena such as tilting, white edge, influence using effect in the growth of the usage time with protective film, the edge of protective film
Fruit, service life are shorter.
In addition, in current protective film preparation process, it is long in wrapup procedure is produced to need to cover one layer of isolation film, to prevent
Only glue layer is sticked together, and causes phenomena such as bubble print, crumple occur, influences the yields of protective film.
The content of the invention
It is a kind of flexible complete it is an object of the present invention to providing in order to overcome shortcoming and defect existing in the prior art
Bag mantle, the full bag mantle feel of the flexibility is smooth, and peeling force is big, has preferable flexibility, Curved screen can be wrapped comprehensively
Wrap up in, while there is preferable resilience and selfreparing effect, can be repaired automatically to scratching trace.
The second object of the present invention is the preparation method for providing a kind of full bag mantle of flexibility, and the preparation method is simple, behaviour
Make easy to control, simplify traditional production technology, production efficiency is high, and production cost is low, and obtained product yield is high, quality
Stablize, be adapted to large-scale industrial production.
An object of the present invention is achieved through the following technical solutions：A kind of flexible full bag mantle, including from top to bottom according to
The cuticular layer of secondary fitting, using layer and peel ply, the cuticular layer includes the substrate layer and cuticula glue being bonded successively from top to bottom
Layer, the reconditioning layer for including being bonded successively from top to bottom using layer, flexible mantle layer and using glue-line, the cuticula glue-line
Lower surface be bonded with the upper surface of the reconditioning layer, the upper table face paste of the lower surface using glue-line and the peel ply
Close.
The full bag mantle feel of flexibility of the present invention is smooth, and peeling force is big, has preferable flexibility, and Curved screen can be carried out
Parcel comprehensively, while layer is used by using with preferable resilience and selfreparing effect, can to scratch trace carry out it is automatic
Repair, avoid scraping the appearance and using effect of the flexible full bag mantle of scar influence, extend the service life of flexible full bag mantle.
Preferably, the substrate layer is PET film of the thickness at 23-100 μm；The cuticula glue-line for thickness 5-20 μm,
Silicone pressure sensitive glue-line of the peeling force in 1-10gf/25mm.The present invention is by using species of the PET film as substrate layer, and sternly
Lattice control the thickness of substrate layer, have preferable dimensional stability, toughness and flexibility, can make with cuticula glue-line stable adhesion
Obtained flexible full bag mantle has preferable flexibility and bonds stability, not easily to fall off between each layer；It is more highly preferred to, institute
It is PET film of the thickness at 50-75 μm to state substrate layer；It is more highly preferred to, the substrate layer is thickness at 50 μm or 75 μm of PET
Film.The present invention strictly controls thickness and the stripping of cuticula glue-line by using material of the organic pressure-sensitive gel as cuticula glue-line
From power, there is preferable viscosity and peeling force, by substrate layer and the bonding stabilization of layer can be used, it is not easily to fall off between each layer；More
To be preferable, the cuticula glue-line for thickness 10-15 μm, peeling force 2-5gf/25mm organic pressure-sensitive gel.
Preferably, the reconditioning layer is made of self-repair resin, and the self-repair resin includes the original of following parts by weight
Material：
The present invention prepares reconditioning layer by using above-mentioned raw materials, and strictly controls the dosage of each raw material, can make obtained
Reconditioning layer has preferable flexibility and rebound characteristics so that reconditioning layer reaches moment reparation cut using its rebound characteristics
Effect, while by using hand feeling agent, make obtained flexible full bag mantle preferably smooth using having during touching
Sense of touch, and the blocking characteristics between self-repair resin raw material can be reduced so that (cure during the full bag mantle of production flexibility
After forming reconditioning layer), directly finished product is wound without being wound again after one layer of PET isolation film of covering, simplify production
Technique, and production cost is reduced, improve the acceptance rate of finished product.
Preferably, the polyalcohols polyester resin is at least one in acrylic polyol resin, linear hydroxyl polyester
Kind；The curing agent is aliphatic isocyanates or/and polyisocyanate；The solvent is ethyl acetate.
The present invention has preferable rebound characteristics, glossiness, resistance to by using the polyalcohols polyester resin of mentioned kind
Hou Xing, wearability and pliability；It is more highly preferred to, the polyalcohols polyester resin is acrylic polyol resin and linear hydroxyl
Base polyester is using weight ratio as 1.6-2.2:The mixture of 1 composition；Or be more highly preferred to, the polyalcohols polyester resin is propylene
Sour polyol resin.For the present invention by using the curing agent of mentioned kind, curing performance is good, has preferable pliability, durable
Property, yellowing is not easy, obtained reconditioning layer can be engaged with other raw materials has preferable adhesive force, and then makes obtained flexibility
Full bag mantle has preferable stability, and interlayer is not easily to fall off；It is more highly preferred to, the curing agent is aliphatic isocyanates；
Or be more highly preferred to, the curing agent is aliphatic isocyanates and polyisocyanate using weight ratio as 2.5-3.5:1 composition
Mixture.For the present invention by using ethyl acetate as solvent, cost is low, and dissolubility is good, and effect can be engaged with other raw materials,
It can make obtained reconditioning layer that there is preferable flexibility and resilience, quality stability is good, can repair and scrape cut, improves flexible
The quality of full bag mantle, prolongs the service life.
Preferably, the hand feeling agent is modified organic silicon high molecular polymer, the modified organic silicon high molecular polymer
For at least one of organic-silicon-modified polymethyl methacrylate, Siloxane-Oxyalkylene Copolymers, dimethyl silicone polymer.This hair
It is bright by using mentioned kind as hand feeling agent, the smooth sense of touch of flexible full bag mantle in use can be improved, reduce from
Blocking characteristics between each raw material of resin for restoration, and then make during the full bag mantle of production flexibility (after being formed by curing reconditioning layer)
It can directly wind, be wound again without covering one layer of isolation film, simplify production technology, reduce production cost, improve into
Product acceptance rate；Be more highly preferred to, the hand feeling agent for organic-silicon-modified polymethyl methacrylate, Siloxane-Oxyalkylene Copolymers and
Dimethyl silicone polymer is using weight ratio as 1.2-1.8：2.5-3.5:The mixture of 1 composition；Or be more highly preferred to, the hand feeling agent
For Siloxane-Oxyalkylene Copolymers.
It is more highly preferred to, self-repair resin of the invention is by acrylic polyol resin, aliphatic isocyanates, polyethers
Modified polyorganosiloxane and ethyl acetate are using weight ratio as 90-110:15-25:1-5:The mixture of 90-110 compositions.
Preferably, the thickness of the reconditioning layer is 5-40 μm；The flexibility mantle layer is modified organic for flexible polyurethane
Silicone layer, rubber layer, TPU membrane or PET film；The use glue-line is for thickness in 20-60 μm, peeling force in 50-200gf/
The organic pressure-sensitive gel resin bed or polyurethane contact adhesive resin bed of 25mm；The peel ply is thickness in 36-75 μm, off-type force
In fluorine modeling release film, non-silicon release film or the silicone oil release film of 5-10gf/25mm.
Thickness of the invention by strictly controlling reconditioning layer, the thickness are the thickness of dry film after reconditioning layer curing, are had
There are preferable flexibility and resilience, and then realize that the effect of cut is scraped in the reparation of flexible full bag mantle；It is more highly preferred to, it is described
The thickness of reconditioning layer is 20-30 μm.
The present invention is by using flexible polyurethane modified organic silicone resin, rubber, TPU membrane or PET film as flexible mantle
Layer, has preferable flexibility and a resilience, its flexibility more it is soft it is easier Curved screen is wrapped up comprehensively, but flexibility mantle
More soft, the then easier scuffing of layer, therefore the present invention is coated with reconditioning layer on the surface of flexible mantle layer, can play and repair automatically
The effect of cut is scraped again, while different types of flexible mantle layer has different thickness；Wherein, the flexible polyurethane is modified
The thickness of organic siliconresin is 80-200 μm, it is preferred that the thickness of the flexible polyurethane modified organic silicone resin is 100-150
μm；The thickness of the rubber is 80-200 μm, it is preferred that the thickness of the rubber is 100-150 μm；The thickness of the TPU membrane
For 75-200 μm, it is preferred that the thickness of the TPU membrane is 75 μm, 100 μm, 125 μm, 150 μm, 200 μm；The thickness of the PET film
Spend for 5-30 μm, it is preferred that the thickness of the PET film is 10-25 μm.It is more highly preferred to, the present invention preferably is selected from the soft of elasticity
The polyurethane-modified organic siliconresin of property, rubber, TPU membrane, and PET film takes second place.
The glue-line that uses of the invention by using mentioned kind, and strictly control uses the thickness and peeling force of glue-line, tool
There is preferable bonding force, flexible mantle layer and peel ply bonding can be stablized, make between obtained flexible complete each layer of bag mantle not
Easy to fall off, stability is good, and peeling force is big, can prevent from coming off from screen using glue-line, and is avoided that flexible full bag mantle uses
Edge tilts, phenomena such as white edge occurs after a long time.
Peel ply of the invention by using mentioned kind, and the thickness and off-type force of peel ply are strictly controlled, system can be made
The full bag mantle of flexibility obtained is liable to stick on Curved screen, flexible full bag mantle is wrapped up Curved screen comprehensively, is avoided soft
Property full bag mantle edge easily occur tilt, white edge phenomena such as；It is more highly preferred to, organic pressure-sensitive gel is used when using glue-line
During resin bed, the peel ply is then using fluorine modeling release film, non-silicon release film；Polyurethane pressure sensitive gum resin is used when using glue-line
During layer, the peel ply then uses silicone oil release film.
The second object of the present invention is achieved through the following technical solutions：A kind of preparation method of flexible full bag mantle, works as institute
When to state flexible mantle layer be flexible polyurethane modified organic silicone resin layer or rubber layer, include the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue
The surface coating self-repair resin of layer, reconditioning layer is formed after second cures, and in the surface coating flexible of reconditioning layer
Polyurethane-modified organic siliconresin or rubber, form flexible mantle layer after third time cures, and are covered in flexible mantle layer surface
Lid isolation film；
(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then
On the surface of flexible mantle layer, coating uses layer glue, is formed after the 4th time cures and uses glue-line, and in the table using glue-line
The upper peel ply of face covering, obtains flexible full bag mantle.
The above-mentioned preparation method of flexible full bag mantle of the invention is simple, and convenient operation and control, above-mentioned coating method is to scrape
Cutter painting cloth, isolation film is covered after cuticula glue-line and flexible mantle layer has been prepared, the molecule of extraneous dust can be carried out every
From, avoid the molecules such as dust from causing to damage to the quality of flexible full bag mantle, improve the acceptance rate of finished product, and use
Isolation film is PET film of the thickness at 40-60 μm；Meanwhile it is of the invention by being coated with self-repair resin on the surface of cuticula glue-line, from
The flexibility and resilience performance of resin for restoration realize the automatic effect for repairing cut, can make obtained flexible full bag mantle have compared with
Good flexibility and selfreparing effect, and the hand feeling agent in self-repair resin can reduce the blocking characteristics between raw material, make second
It is secondary be formed by curing after reconditioning layer directly to wind wound again without covering isolation film, simplify traditional production technology, drop
Low production cost is low, improves production efficiency and the acceptance rate of product, stable quality, is adapted to large-scale industrial production.
Preferably, in the step (1), heat cure is cured as the first time, and solidification temperature is 140-170 DEG C, hardening time
For 60-75s；In the step (2), heat cure is cured as the second time, and solidification temperature is 80-130 DEG C, hardening time 60-
90s；The third time is cured as heat cure, and solidification temperature is 130-170 DEG C, hardening time 60-90s；The step (3)
In, it is cured as heat cure for the 4th time, solidification temperature is 140-170 DEG C, hardening time 60-90s.
Four curings of the present invention use heat cure, and each layer raw material can be made to form a film in a manner of heating, curing molding
Degree is uniform, and curing efficiency is high, and obtained flexible full bag mantle can be made to have preferable flexibility, resilience and selfreparing effect
Fruit；And by strictly controlling first time heat cure, second of heat cure, third time heat cure and the curing temperature of the 4th heat cure
Degree and hardening time, can cure each layer fully and uniform, the quality of each layer will not be caused to damage, can make obtained flexibility
Full bag mantle has preferable flexibility, resilience and selfreparing effect.
Alternatively, a kind of preparation method of flexible full bag mantle, when the flexible mantle layer is TPU membrane or PET film, including
Following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) flexible full bag mantle is prepared：TPU membrane or PET film are taken, in TPU membrane or the coated on one side selfreparing tree of PET film
Fat, forms reconditioning layer after second cures, cuticular layer made from step (1) then is torn isolation film, and is covered in certainly
The surface of repair layer；The coating of the another side of TPU membrane or PET film uses layer glue, is formed after third time cures and uses glue-line, so
The peel ply in the surface covering using glue-line afterwards, obtains flexible full bag mantle.
The above-mentioned preparation method of flexible full bag mantle of the invention is simple, and convenient operation and control, above-mentioned coating method is to scrape
Cutter painting cloth, isolation film is covered after cuticula glue-line has been prepared, and can isolate the molecule of extraneous dust, avoid dust etc.
Molecule causes to damage to the quality of flexible full bag mantle, improves the acceptance rate of finished product, and the isolation film used is thickness
In 40-60 μm of PET film；Meanwhile the present invention by the surface of cuticula glue-line be coated with self-repair resin, self-repair resin it is soft
Soft and resilience performance realizes the automatic effect for repairing cut, can make obtained flexible full bag mantle have preferable flexibility and
Selfreparing effect, and the hand feeling agent in self-repair resin can reduce the blocking characteristics between raw material, make to be formed by curing for the second time certainly
It can directly wind after repair layer and be wound again without covering isolation film, simplify traditional production technology, reduce production cost
It is low, production efficiency and the acceptance rate of product are improved, stable quality, is adapted to large-scale industrial production.
Preferably, in the step (1), heat cure is cured as the first time, and solidification temperature is 140-170 DEG C, hardening time
For 60-75s；In the step (2), heat cure is cured as the second time, and solidification temperature is 80-130 DEG C, hardening time 60-
90s；The third time is cured as heat cure, and solidification temperature is 140-170 DEG C, hardening time 60-90s.
The curing three times of the present invention uses heat cure, and each layer raw material can be made to form a film in a manner of heating, curing molding
Degree is uniform, and curing efficiency is high, and obtained flexible full bag mantle can be made to have preferable flexibility, resilience and selfreparing effect
Fruit；And by strictly controlling first time heat cure, the solidification temperature of second of heat cure and third time heat cure and hardening time,
It can cure each layer fully and uniform, the quality of each layer will not be caused to damage, can have obtained flexible full bag mantle
Preferable flexibility, resilience and selfreparing effect.
The beneficial effects of the present invention are：The full bag mantle feel of flexibility of the present invention is smooth, and peeling force is big, has preferable
Resilience and selfreparing effect, the flexible buffing layer of use have the characteristics that flexibility is good, Curved screen can be wrapped up comprehensively,
The reconditioning layer of use can be repaired automatically to scratching trace, avoid scraping the appearance of the flexible full bag mantle of scar influence and using effect
Fruit, extends the service life of flexible full bag mantle.
The preparation method of flexible full bag mantle of the invention, convenient operation and control is simple, is directly wound after reconditioning layer is made
Next step is carried out, traditional production technology is simplified, reduces production cost, improves the excellent of production efficiency and product
Rate, stable quality, is adapted to large-scale industrial production.
Brief description of the drawings
Fig. 1 is the schematic cross-section of flexible full bag mantle of the invention；
Fig. 2 is the schematic cross-section of flexible full bag mantle made from comparative example 2 of the present invention.
Reference numeral is：1-cuticular layer, 11-substrate layer, 12-cuticula glue-line, 2-using layer, 21-reconditioning layer,
22-flexible mantle layer, 23-use glue-line, 3-peel ply.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made with reference to embodiment and attached drawing 1-2 further
Explanation, the content that embodiment refers to not is limitation of the invention.
Embodiment 1
See Fig. 1, a kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply
3, the cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 that are bonded successively from top to bottom, it is described using layer 2 include from up to
Under be bonded successively reconditioning layer 21, flexible mantle layer 22 and use glue-line 23, the lower surface of the cuticula glue-line 12 with it is described
The upper surface fitting of reconditioning layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 23 μm；The cuticula glue-line 12 exists for thickness in 5 μm, peeling force
The silicone pressure sensitive glue-line of 1gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
The polyalcohols polyester resin is linear hydroxyl polyester；The curing agent is polyisocyanate；The solvent is
Ethyl acetate.
The hand feeling agent is modified organic silicon high molecular polymer, and the modified organic silicon high molecular polymer is poly- diformazan
Radical siloxane.
The thickness of the reconditioning layer 21 is 5 μm；The flexibility mantle layer 22 is rubber layer of the thickness at 80 μm；It is described to make
With glue-line 23 for thickness 20 μm, peeling force 50gf/25mm organic pressure-sensitive gel resin bed；The peel ply 3 is thickness
Release film is moulded in 36 μm, fluorine of the off-type force in 5gf/25mm.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue
The surface coating self-repair resin of layer, forms reconditioning layer after second cures, and is coated with rubber on the surface of reconditioning layer,
Flexible mantle layer is formed after third time cures, and isolation film is covered in flexible mantle layer surface；
(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then
On the surface of flexible mantle layer, coating uses layer glue, is formed after the 4th time cures and uses glue-line, and in the table using glue-line
The upper peel ply of face covering, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 140 DEG C, hardening time 75s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 80 DEG C, hardening time 90s；The third time is cured as thermosetting
Change, solidification temperature is 130 DEG C, hardening time 90s；In the step (3), heat cure is cured as the 4th time, solidification temperature is
140 DEG C, hardening time 90s.
Embodiment 2
A kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply 3, it is described
Cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 being bonded successively from top to bottom, described to be included from top to bottom successively using layer 2
The reconditioning layer 21 of fitting, flexible mantle layer 22 and use glue-line 23, lower surface and the selfreparing of the cuticula glue-line 12
The upper surface fitting of layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 35 μm；The cuticula glue-line 12 exists for thickness in 8 μm, peeling force
The silicone pressure sensitive glue-line of 2gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
The polyalcohols polyester resin is linear hydroxyl polyester；The curing agent is polyisocyanate；The solvent is
Ethyl acetate.
The hand feeling agent is modified organic silicon high molecular polymer, and the modified organic silicon high molecular polymer is organosilicon
Modified poly (methyl methacrylate).
The thickness of the reconditioning layer 21 is 10 μm；The flexibility mantle layer 22 is TPU membrane of the thickness at 75 μm；It is described to make
With glue-line 23 for thickness 30 μm, peeling force 90gf/25mm polyurethane contact adhesive resin bed；The peel ply 3 is thickness
43 μm, off-type force 6gf/25mm silicone oil release film.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) flexible full bag mantle is prepared：TPU membrane is taken, in the coated on one side self-repair resin of TPU membrane, is cured through second
After form reconditioning layer, cuticular layer made from step (1) is then torn into isolation film, and be covered in the surface of reconditioning layer；TPU
The another side coating of film uses layer glue, is formed after third time cures and uses glue-line, is then covered using the surface of glue-line
Upper peel ply, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 140 DEG C, hardening time 75s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 80 DEG C, hardening time 90s；The third time is cured as thermosetting
Change, solidification temperature is 140 DEG C, hardening time 90s.
Embodiment 3
A kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply 3, it is described
Cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 being bonded successively from top to bottom, described to be included from top to bottom successively using layer 2
The reconditioning layer 21 of fitting, flexible mantle layer 22 and use glue-line 23, lower surface and the selfreparing of the cuticula glue-line 12
The upper surface fitting of layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 50 μm；The cuticula glue-line 12 exists for thickness in 11 μm, peeling force
The silicone pressure sensitive glue-line of 3gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
The polyalcohols polyester resin is acrylic polyol resin；The curing agent is aliphatic isocyanates；Institute
It is ethyl acetate to state solvent.
The hand feeling agent is modified organic silicon high molecular polymer, and the modified organic silicon high molecular polymer changes for polyethers
Property polysiloxanes.
The thickness of the reconditioning layer 21 is 20 μm；The flexibility mantle layer 22 changes for thickness in 80 μm of flexible polyurethane
Property organic siliconresin；It is described using glue-line 23 for thickness 35 μm, peeling force 125gf/25mm silicone pressure sensitive gum resin
Layer；The peel ply 3 for thickness 50 μm, off-type force 7gf/25mm non-silicon release film.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue
The surface coating self-repair resin of layer, reconditioning layer is formed after second cures, and in the surface coating flexible of reconditioning layer
Polyurethane-modified organic siliconresin, forms flexible mantle layer after third time cures, and covers and isolate in flexible mantle layer surface
Film；
(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then
On the surface of flexible mantle layer, coating uses layer glue, is formed after the 4th time cures and uses glue-line, and in the table using glue-line
The upper peel ply of face covering, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 155 DEG C, hardening time 68s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 80-130 DEG C, hardening time 75s；The third time is cured as
Heat cure, solidification temperature are 130-170 DEG C, hardening time 75s；In the step (3), heat cure is cured as the 4th time, Gu
It is 140-170 DEG C to change temperature, hardening time 75s.
Embodiment 4
A kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply 3, it is described
Cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 being bonded successively from top to bottom, described to be included from top to bottom successively using layer 2
The reconditioning layer 21 of fitting, flexible mantle layer 22 and use glue-line 23, lower surface and the selfreparing of the cuticula glue-line 12
The upper surface fitting of layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 75 μm；The cuticula glue-line 12 exists for thickness in 14 μm, peeling force
The silicone pressure sensitive glue-line of 5gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
The polyalcohols polyester resin is acrylic polyol resin；The curing agent is aliphatic isocyanates；Institute
It is ethyl acetate to state solvent.
The hand feeling agent is modified organic silicon high molecular polymer, and the modified organic silicon high molecular polymer changes for polyethers
Property polysiloxanes.
The thickness of the reconditioning layer 21 is 25 μm；The flexibility mantle layer 22 is PET film of the thickness at 5 μm；It is described to make
With glue-line 23 for thickness 40 μm, peeling force 150gf/25mm polyurethane contact adhesive resin bed；The peel ply 3 is thickness
60 μm, off-type force 8gf/25mm silicone oil release film.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) flexible full bag mantle is prepared：PET film is taken, in the coated on one side self-repair resin of PET film, is cured through second
After form reconditioning layer, cuticular layer made from step (1) is then torn into isolation film, and be covered in the surface of reconditioning layer；PET
The another side coating of film uses layer glue, is formed after third time cures and uses glue-line, is then covered using the surface of glue-line
Upper peel ply, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 155 DEG C, hardening time 68s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 105 DEG C, hardening time 75s；The third time is cured as thermosetting
Change, solidification temperature is 155 DEG C, hardening time 75s.
Embodiment 5
A kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply 3, it is described
Cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 being bonded successively from top to bottom, described to be included from top to bottom successively using layer 2
The reconditioning layer 21 of fitting, flexible mantle layer 22 and use glue-line 23, lower surface and the selfreparing of the cuticula glue-line 12
The upper surface fitting of layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 90 μm；The cuticula glue-line 12 exists for thickness in 17 μm, peeling force
The silicone pressure sensitive glue-line of 8gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
The polyalcohols polyester resin is acrylic polyol resin and linear hydroxyl polyester using weight ratio as 1.6:1 group
Into mixture；The curing agent is aliphatic isocyanates and polyisocyanate using weight ratio as 2.5:The mixture of 1 composition；
The solvent is ethyl acetate.
The hand feeling agent is organic-silicon-modified polymethyl methacrylate, Siloxane-Oxyalkylene Copolymers and polydimethylsiloxanes
Alkane is using weight ratio as 1.2：3.5:The mixture of 1 composition.
The thickness of the reconditioning layer 21 is 30 μm；The flexibility mantle layer 22 is flexible polyurethane of the thickness at 200 μm
Modified organic silicone resin；It is described using glue-line 23 for thickness 50 μm, peeling force 175gf/25mm silicone pressure sensitive gum tree
Lipid layer；The peel ply 3 moulds release film for thickness in 68 μm, fluorine of the off-type force in 9gf/25mm.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue
The surface coating self-repair resin of layer, reconditioning layer is formed after second cures, and in the surface coating flexible of reconditioning layer
Polyurethane-modified organic siliconresin, forms flexible mantle layer after third time cures, obtains composite bed, and in flexible mantle layer table
Face covers isolation film；
(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then
On the surface of flexible mantle layer, coating uses layer glue, is formed after the 4th time cures and uses glue-line, and in the table using glue-line
The upper peel ply of face covering, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 170 DEG C, hardening time 60s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 130 DEG C, hardening time 60s；The third time is cured as thermosetting
Change, solidification temperature is 170 DEG C, hardening time 60s；It is described
In step (3), heat cure is cured as the 4th time, solidification temperature is 170 DEG C, hardening time 60s.
Embodiment 6
A kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply 3, it is described
Cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 being bonded successively from top to bottom, described to be included from top to bottom successively using layer 2
The reconditioning layer 21 of fitting, flexible mantle layer 22 and use glue-line 23, lower surface and the selfreparing of the cuticula glue-line 12
The upper surface fitting of layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 100 μm；The cuticula glue-line 12 exists for thickness in 20 μm, peeling force
The silicone pressure sensitive glue-line of 10gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
The polyalcohols polyester resin is acrylic polyol resin and linear hydroxyl polyester using weight ratio as 2.2:1 group
Into mixture；The curing agent is aliphatic isocyanates and polyisocyanate using weight ratio as 3.5:The mixture of 1 composition；
The solvent is ethyl acetate.
The hand feeling agent is organic-silicon-modified polymethyl methacrylate, Siloxane-Oxyalkylene Copolymers and polydimethylsiloxanes
Alkane is using weight ratio as 1.8：2.5:The mixture of 1 composition.
The thickness of the reconditioning layer 21 is 40 μm；The flexibility mantle layer 22 is TPU membrane of the thickness at 200 μm；It is described
Using glue-line 23 for thickness 60 μm, peeling force 200gf/25mm polyurethane contact adhesive resin bed；The peel ply 3 is thickness
Spend 75 μm, off-type force 10gf/25mm silicone oil release film.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) flexible full bag mantle is prepared：TPU membrane is taken, in the coated on one side self-repair resin of TPU membrane, is cured through second
After form reconditioning layer, cuticular layer made from step (1) is then torn into isolation film, and be covered in the surface of reconditioning layer；TPU
The another side coating of film uses layer glue, is formed after third time cures and uses glue-line, is then covered using the surface of glue-line
Upper peel ply, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 170 DEG C, hardening time 60s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 130 DEG C, hardening time 60s；The third time is cured as thermosetting
Change, solidification temperature is 170 DEG C, hardening time 60s.
Comparative example 1
A kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply 3, it is described
Cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 being bonded successively from top to bottom, described to be included from top to bottom successively using layer 2
The reconditioning layer 21 of fitting, flexible mantle layer 22 and use glue-line 23, lower surface and the selfreparing of the cuticula glue-line 12
The upper surface fitting of layer 21, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 50 μm；The cuticula glue-line 12 exists for thickness in 11 μm, peeling force
The silicone pressure sensitive glue-line of 3gf/25mm.
The reconditioning layer is made of self-repair resin, and the self-repair resin includes the raw material of following parts by weight：
100 parts of polyalcohols polyester resin
20 parts of curing agent
100 parts of solvent.
The polyalcohols polyester resin is acrylic polyol resin；The curing agent is aliphatic isocyanates；Institute
It is ethyl acetate to state solvent.
The thickness of the reconditioning layer 21 is 20 μm；The flexibility mantle layer 22 changes for thickness in 80 μm of flexible polyurethane
Property organic siliconresin；It is described using glue-line 23 for thickness 35 μm, peeling force 125gf/25mm silicone pressure sensitive gum resin
Layer；The peel ply 3 for thickness 50 μm, off-type force 7gf/25mm non-silicon release film.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue
The surface coating self-repair resin of layer, reconditioning layer is formed after second cures, and in the surface coating flexible of reconditioning layer
Polyurethane-modified organic siliconresin, forms flexible mantle layer after third time cures, obtains composite bed, and in flexible mantle layer table
Face covers isolation film；
(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then
On the surface of flexible mantle layer, coating uses layer glue, is formed after the 4th time cures and uses glue-line, and in the table using glue-line
The upper peel ply of face covering, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 155 DEG C, hardening time 68s；The step
Suddenly in (2), heat cure is cured as the second time, and solidification temperature is 80-130 DEG C, hardening time 75s；The third time is cured as
Heat cure, solidification temperature are 130-170 DEG C, hardening time 75s；In the step (3), heat cure is cured as the 4th time, Gu
It is 140-170 DEG C to change temperature, hardening time 75s.
Comparative example 2
See Fig. 2, a kind of flexible full bag mantle, including be bonded successively from top to bottom cuticular layer 1, using layer 2 and peel ply
3, the cuticular layer 1 includes the substrate layer 11 and cuticula glue-line 12 that are bonded successively from top to bottom, it is described using layer 2 include from up to
Under the flexible mantle layer 22 that is bonded successively and use glue-line 23, the lower surface of the cuticula glue-line 12 and the flexible mantle layer 22
Upper surface fitting, the lower surface using glue-line 23 is bonded with the upper surface of the peel ply 3.
The substrate layer 11 is PET film of the thickness at 50 μm；The cuticula glue-line 12 exists for thickness in 11 μm, peeling force
The silicone pressure sensitive glue-line of 3gf/25mm.
The flexibility mantle layer 22 is flexible polyurethane modified organic silicone resin of the thickness at 80 μm；It is described to use glue-line 23
For thickness 35 μm, peeling force 125gf/25mm organic pressure-sensitive gel resin bed；The peel ply 3 for thickness 50 μm,
Non-silicon release film of the off-type force in 7gf/25mm.
A kind of preparation method of flexible full bag mantle, includes the following steps：
(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, shield is formed after first time cures
Film glue-line, obtains cuticular layer, and covers isolation film in cuticula film surface；
(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue
The polyurethane-modified organic siliconresin of surface coating flexible of layer, forms flexible mantle layer after second cures, obtains composite bed,
And cover isolation film in flexible mantle layer surface；
(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then
On the surface of flexible mantle layer, coating uses layer glue, is formed after third time cures and uses glue-line, and in the table using glue-line
The upper peel ply of face covering, obtains flexible full bag mantle.
In the step (1), heat cure is cured as the first time, and solidification temperature is 155 DEG C, hardening time 68s；The step
Suddenly described to be cured as heat cure for the second time in (2), solidification temperature is 130-170 DEG C, hardening time 75s；The step (3)
In, heat cure is cured as the third time, and solidification temperature is 140-170 DEG C, hardening time 75s.
Flexible full bag mantle made from embodiment 1-6 and comparative example 1-2 is subjected to the dependence tests such as self-healing properties, test
As a result it is as follows：
The self-reparing capability test of the flexible full bag mantle is to utilize 2H pencils, under the pressure of 500gf, to selfreparing
Layer surface is slided, and observes the degree and extinction time of cut；
Selfreparing scratch resistance test is the backwash 10 times of being got off using 200g copper brush at 25 DEG C, when testing the recovery of cut
Between；
The oily measure of merit of contracting of shrinking is slided using oil pen, and many oil droplet shapes are presented in oil stain, are then smeared with cloth
Wipe, that observes oil stain wipes situation；
The water droplet angle test of the reconditioning layer is that reconditioning layer is tested using water droplet angle tester；
The fitting effect is that obtained flexible full bag mantle is fitted on curved surface screen mobile phone (such as Samsung S7 mobile phones),
The fitting situation of the flexible full bag mantle of observation.
By above-mentioned test and result data as it can be seen that flexible full bag mantle feel produced by the present invention is smooth, peeling force is big, energy
Curved screen is wrapped up comprehensively, there is preferable resilience and selfreparing effect, can be carried out certainly to scratching trace in a short time
It is dynamic to repair, avoid scraping the appearance and using effect of the flexible full bag mantle of scar influence, extend flexible full bag mantle uses the longevity
Life.
Above-described embodiment is the preferable implementation of the present invention, and in addition, the present invention can be realized with other manner,
Do not depart from and any on the premise of present inventive concept obviously replace within protection scope of the present invention.
Claims (10)
- A kind of 1. flexible full bag mantle, it is characterised in that：Including be bonded successively from top to bottom cuticular layer, using layer and stripping Layer, the cuticular layer include the substrate layer and cuticula glue-line that are bonded successively from top to bottom, it is described using layer include from top to bottom according to The reconditioning layer of secondary fitting, flexible mantle layer and using glue-line, the lower surface of the cuticula glue-line are upper with the reconditioning layer Surface is bonded, and the lower surface using glue-line is bonded with the upper surface of the peel ply.
- A kind of 2. flexible full bag mantle according to claim 1, it is characterised in that：The substrate layer is thickness in 23-100 μm PET film；The cuticula glue-line for thickness 5-20 μm, peeling force 1-10gf/25mm silicone pressure sensitive glue-line.
- A kind of 3. flexible full bag mantle according to claim 1, it is characterised in that：The reconditioning layer is by self-repair resin It is made, the self-repair resin includes the raw material of following parts by weight：
- A kind of 4. flexible full bag mantle according to claim 3, it is characterised in that：The polyalcohols polyester resin is third At least one of olefin(e) acid polyol resin, linear hydroxyl polyester；The curing agent is aliphatic isocyanates or/and poly- isocyanide Acid esters；The solvent is ethyl acetate.
- A kind of 5. flexible full bag mantle according to claim 3, it is characterised in that：The hand feeling agent is high for modified organic silicon Molecularly Imprinted Polymer, the modified organic silicon high molecular polymer is organic-silicon-modified polymethyl methacrylate, polyether-modified poly- At least one of siloxanes, dimethyl silicone polymer.
- A kind of 6. flexible full bag mantle according to claim 1, it is characterised in that：The thickness of the reconditioning layer is 5-40 μm；The flexibility mantle layer is flexible polyurethane modified organic silicone resin layer, rubber layer, TPU membrane or PET film；It is described to use glue Layer for thickness 20-60 μm, peeling force 50-200gf/25mm organic pressure-sensitive gel resin bed or polyurethane pressure sensitive gum resin Layer；The peel ply moulds release film, non-silicon release film or silicone oil for thickness in 36-75 μm, fluorine of the off-type force in 5-10gf/25mm Release film.
- 7. such as a kind of preparation method of flexible full bag mantle of claim 1-6 any one of them, it is characterised in that：When described soft When property mantle layer is flexible polyurethane modified organic silicone resin layer or rubber layer, include the following steps：(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, cuticula glue is formed after first time cures Layer, obtains cuticular layer, and covers isolation film in cuticula film surface；(2) composite bed is prepared：Cuticula glue-line of the step (1) covered with isolation film is torn into isolation film, then in cuticula glue-line Surface is coated with self-repair resin, and reconditioning layer is formed after second cures, and in the poly- ammonia of surface coating flexible of reconditioning layer Ester modified organic siliconresin or rubber, form flexible mantle layer after third time cures, and the covering of flexible mantle layer surface every From film；(3) flexible full bag mantle is prepared：Flexible mantle layer of the step (2) covered with isolation film is torn into isolation film, then soft Property mantle layer surface coating use layer glue, after the 4th time cures formation use glue-line, and covered using the surface of glue-line Peel ply is covered, obtains flexible full bag mantle.
- A kind of 8. preparation method of flexible full bag mantle according to claim 7, it is characterised in that：In the step (1), Heat cure is cured as the first time, and solidification temperature is 140-170 DEG C, hardening time 60-75s；In the step (2), second Heat cure is cured as, solidification temperature is 80-130 DEG C, hardening time 60-90s；The third time is cured as heat cure, cures Temperature is 130-170 DEG C, hardening time 60-90s；In the step (3), heat cure is cured as the 4th time, solidification temperature is 140-170 DEG C, hardening time 60-90s.
- 9. such as a kind of preparation method of flexible full bag mantle of claim 1-6 any one of them, it is characterised in that：When described soft When property mantle layer is TPU membrane or PET film, include the following steps：(1) cuticular layer is prepared：Substrate layer is taken, cuticula glue is coated with the surface of substrate layer, cuticula glue is formed after first time cures Layer, obtains cuticular layer, and covers isolation film in cuticula film surface；(2) flexible full bag mantle is prepared：TPU membrane or PET film are taken, in TPU membrane or the coated on one side self-repair resin of PET film, warp Reconditioning layer is formed after second of curing, cuticular layer made from step (1) is then torn into isolation film, and be covered in reconditioning layer Surface；The coating of the another side of TPU membrane or PET film uses layer glue, is formed after third time cures and uses glue-line, then made With the upper peel ply of surface covering of glue-line, flexible full bag mantle is obtained.
- A kind of 10. preparation method of flexible full bag mantle according to claim 9, it is characterised in that：The step (1) In, heat cure is cured as the first time, and solidification temperature is 140-170 DEG C, hardening time 60-75s；In the step (2), second Secondary to be cured as heat cure, solidification temperature is 80-130 DEG C, hardening time 60-90s；The third time is cured as heat cure, Gu It is 140-170 DEG C to change temperature, hardening time 60-90s.
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| WO2021213113A1 (en) * | 2020-04-23 | 2021-10-28 | 广东邦固薄膜涂料创新研究院有限公司 | Self-repairing tpu protective film for 3d curved screen and preparation method therefor |
| CN111363488A (en) * | 2020-04-23 | 2020-07-03 | 广东邦固薄膜涂料创新研究院有限公司 | 3D curved screen self-repairing TPU protective film and preparation method thereof |
| CN111534244A (en) * | 2020-05-12 | 2020-08-14 | 江西蓝海芯科技集团有限公司 | Protective film applied to curved surface display screen |
| WO2022001906A1 (en) * | 2020-06-29 | 2022-01-06 | 华为技术有限公司 | Protective film for flexible screen, flexible screen module and electronic device |
| CN112759779A (en) * | 2020-12-30 | 2021-05-07 | 南京科悦新材料有限公司 | Super-flexible release film and preparation method thereof |
| CN112918059A (en) * | 2021-03-22 | 2021-06-08 | 海安鑫福缘农业科技有限公司 | Packaging film for cotton packaging |
| CN115572553A (en) * | 2022-09-22 | 2023-01-06 | 苏州易昇光学材料股份有限公司 | Self-repairing flexible film based on multilayer coextrusion casting GPU and preparation method and application thereof |
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| CN115960545B (en) * | 2022-12-05 | 2023-09-05 | 苏州易昇光学材料股份有限公司 | High-yellowing-resistant weather-resistant self-repairing GPU protective film |
| CN116410653A (en) * | 2023-04-07 | 2023-07-11 | 宁波惠之星新材料科技股份有限公司 | Self-repairing coating, electronic screen protective film and preparation method |
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