CN106626568A - Protection film capable of being attached to cambered-surface edge and preparation method of protection film - Google Patents
Protection film capable of being attached to cambered-surface edge and preparation method of protection film Download PDFInfo
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- CN106626568A CN106626568A CN201611225808.5A CN201611225808A CN106626568A CN 106626568 A CN106626568 A CN 106626568A CN 201611225808 A CN201611225808 A CN 201611225808A CN 106626568 A CN106626568 A CN 106626568A
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/20—Layered products comprising a layer of natural or synthetic rubber comprising silicone rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
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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
- B32B38/00—Ancillary operations in connection with laminating processes
Abstract
The invention discloses a protection film capable of being attached to a cambered-surface edge and a preparation method of the protection film. The protection film is of a laminar structure, and comprises a first PET release film layer, a self-repairing coating, a TPU layer, an OCA layer, a PET layer, a silica gel layer and a second PET release film layer which are sequentially laminated. The protection film has the advantages that the self-repairing layer has good adhesive force; the formation size is accurate; the repairing speed is high; the cambered-surface edge is stable; rebounding is avoided, and the like.
Description
Technical field
The present invention relates to a kind of protective film of electronic product field, and in particular to a kind of diaphragm at cambered surface edge of fitting and
Its preparation method.
Background technology
2.5D curved surfaces mobile phone and 3D curved surface mobile phone generality more and more highers, in the flagship machine issued from 2015 to 2016
Understand, cambered surface mobile phone occupation rate close 90%；And can determine whether from the data for rising and some information, curved surface mobile phone is
The development trend of megatrend, occupation rate of market still can continue to increase.
In order to tackle curved surface mobile phone, safeguard film for cellular phone also developed in succession TPU+ acrylic pad pastings, hot bending PET pad pastings,
Hot bending safety glass pad pasting；But nonetheless, also without any a product can perfection solve the problems, such as patch curved surface mobile phone；Such as
(1) TPU+ acrylics bond paper facing：TPU materials belong to mantle series, overall flexible, partially soft, cause entirety not straight and upright enough, cause patch
Align inaccurate during film, pad pasting gimmick has high demands；Because using high viscous 200g acrylic colloidalities, glue-line cannot be arranged normally
Gas, need to affect pad pasting experience property by corresponding swipe auxiliary exhaust；(2) hot bending PET pad pastings：The product mainly adopt PET for
Base material, toughness is poor, and thermoplasticity is big, therefore the bounce-back after hot-forming cooling is larger；(3) hot bending safety glass pad pasting：High cost,
Edge is broken, it is impossible to do full absorption, and touch-control is insensitive
The content of the invention
In order to overcome the deficiencies in the prior art, in order to solve diaphragm laminating curved surface mobile phone stability it is poor, experience property is poor,
The problems such as feature difference；In order to preferably adapt to the development trend of curved surface mobile phone, provide more stable, effective for curved surface mobile phone
Protection, first purpose of the present invention is to provide the diaphragm for planting the cambered surface edge that can fit, the diaphragm.The diaphragm has
Reconditioning layer adhesive force is good, compact dimensions accurate, repair the advantages of speed is fast, cambered surface edge does not stably rebound.
Second object of the present invention is to provide for a kind of preparation method of said protection film.
Realize that the purpose of the present invention can reach by adopting the following technical scheme that：
A kind of diaphragm at cambered surface edge of fitting, the diaphragm is layer structure, including the PET for stacking gradually
Release film layer, coatings, TPU layer, OCA layers, pet layer, layer of silica gel, the 2nd PET release film layers.First PET mould release membrances,
It is surface and the glue surface of product that two PET mould release membrance masters are to be protected, is torn again during client's pad pasting
Preferably, a PET release film layers in the one side of coatings away from being also covered with a PE layers.It is preferred that
Ground, the 2nd PET release film layers in the one side of layer of silica gel away from being also covered with the 2nd PE layers.A described PE layers, the 2nd PE
Layer is high temperature resistant PE film, removes after the completion of hot pressing；PE layers are set primarily to preventing material deformation in hot pressing, are subtracted
Few hot pressing die/foreign extrudes impression or pressure point to material, keeps the clean and flatness of material, and high temperature resistant PE film is in warm
Remove after the completion of pressure.
Preferably, the TPU layer is TPU membrane, and the hardness of the TPU membrane is 85A, and thickness is 100 μm -150 μm.Thin
TPU former materials coordinate its pliability to contribute to cambered surface laminating；Simultaneously TPU substrate surfaces make coatings, and tack is more preferably, wear-resisting
Property it is high；The attribute of 85A causes material softness more preferably, and 100 μm -150 μm of material thickness is relatively thin, and property of hanging down is preferable, arc of easily fitting
Degree edge；And due to the self attributes of TPU materials, on surface, painting reparation material tack is higher, difficult for drop-off.
Preferably, the coatings are PET coating；The thickness of the coatings is
25μm；Certain selfreparing effect is reached using the caoutchouc elasticity principle of the raw material, so as to increase the scratch resistance of diaphragm itself.
Preferably, the OCA layers are OCA layers of two-sided, and the viscosity of the OCA layers of two-sided is 200g；The OCA is two-sided
Glue-line is optics rank acrylic glue.
Preferably, the thickness of the OCA layers is 15-25 μm.OCA thickness reduces integral thickness at 15 μm -25 μm can be reduced
A bounce-back risk of the material Jing after Hot-press cooling.
Preferably, the thickness of the layer of silica gel is 30 μm, and viscosity is 80-100g.The collocation of the viscous silica gel of height can improve product
Final laminating stability；And silica gel good fluidity, it is easier to it is vented.
Preferably, the pet layer is PET film, and the thickness of the pet layer is 50 μm.Certain thickness PET is conducive to hot bending
Shaping, can more preferably coincide curved surface, reduction be heated cool down after bounce-back amplitude；50 μm of PET are in hot-forming degree, cooling bounce-back
Risk assessment aspect is all more balanced.
A kind of preparation method of the diaphragm at cambered surface edge of fitting, comprises the following steps：
1) TPU membrane is selected as TPU layer, PET raw material by the way of the coating of nick anilox roll
It is coated in TPU membrane upper surface and forms coatings；Obtain the first semi-finished product film；
2) select PET film as pet layer, in the lower surface coating silica gel of PET film layer of silica gel is formed；In the upper table of PET film
Face pastes the optics acrylic glue with biadhesive and forms OCA layers；By the upper surface of OCA layers and step 1) obtained first
TPU lower surfaces bonding in semi-finished product film, obtains the second semi-finished product film；
3) in step 2) upper surface of reconditioning layer pastes a PET mould release membrances in the second semi-finished product film for being obtained；First
The upper surface of PET mould release membrances pastes a PE layers, and it is release that the layer of silica gel lower surface in the second semi-finished product film pastes the 2nd PET
Film, in the lower surface of the 2nd PET mould release membrances the 2nd PE layers are pasted, and obtain prototype diaphragm；The first PET mould release membrances, second
PET mould release membrances are PET film；The first PE layers, the 2nd PE layers are PE films；
4) using mould to by step 3) the prototype diaphragm that obtained carries out hot bending：The mould include male mould and
Master tooling, by step 3) the prototype diaphragm that obtained is fixed on master tooling, master tooling carried out to be preheated to prototype diaphragm
Temperature is 260-380 DEG C, keeps 5-15s；The temperature of preheating male mould is to 70 DEG C -85 DEG C；The bending angle of the mould compares institute
The little 13-15 degree of curve screens bending angle of matching；Male mould is 250 μm -450 μm with the impression gap of master tooling；Male mould,
Tool plugs heat pipe in master mold；
5) male mould after preheating is pressed into master tooling is fitted together to mould, and constant temperature keeps 3-12s；Backward male mould, mother
The heat pipe circulation of mould is passed through cooling solution, keeps 3-10min；Mould is opened after cooling, the diaphragm after hot bending is obtained；Institute
The temperature for stating coolant is -10 DEG C to 0 DEG C；
6) according to required size to step 5) obtained by hot bending after diaphragm carry out cutting acquisition and can fit cambered surface edge
Diaphragm.
In described preparation method, mould is prepared using S136 steel, and the bending angle of grinding tool is less than matched screen
The bending angle of curtain, the setting is obtained through groping repeatedly according to the property of raw material of diaphragm, is mainly used for offsetting hot pressing
Afterwards the bending angle of diaphragm rebounds；It is possible thereby to provide a kind of diaphragm at laminating edge.
Description of the drawings
Fig. 1 is the sectional view of described diaphragm.
Wherein, the 1, the first PE layers；2nd, a PET release film layers；3rd, coatings；4th, TPU layer；5th, OCA layers；6、PET
Layer；7th, layer of silica gel；8th, the 2nd PET release film layers；9th, the 2nd PE layers
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the present invention is described further：
Embodiment 1：
As shown in figure 1, a kind of diaphragm at cambered surface edge of fitting, the diaphragm is layer structure, including layer successively
Folded PE layers, a PET release film layers, coatings, TPU layer, OCA layers, pet layer, layer of silica gel, the 2nd PET are release
Film layer, the 2nd PE layers.The TPU layer is TPU membrane, and the hardness of the TPU membrane is 85A, and thickness is 100 μm.It is described to review one's lessons by oneself overcoating
Layer is PET coating；The thickness of the coatings is 25 μm.The OCA layers are OCA layers of two-sided,
The viscosity of the OCA layers of two-sided is 200g；The OCA layers of two-sided is optics rank acrylic glue.The thickness of the OCA layers
For 15 μm.The thickness of the layer of silica gel is 30 μm, and viscosity is 80g.The pet layer is PET film, and the thickness of the pet layer is 50 μ
m。
The preparation method of the diaphragm at the cambered surface edge of fitting, comprises the following steps：
1) TPU membrane is selected as TPU layer, PET raw material by the way of the coating of nick anilox roll
It is coated in TPU membrane upper surface and forms coatings；Obtain the first semi-finished product film；
2) select PET film as pet layer, in the lower surface coating silica gel of PET film layer of silica gel is formed；In the upper table of PET film
Face pastes the optics acrylic glue with biadhesive and forms OCA layers；By the upper surface of OCA layers and step 1) obtained first
TPU lower surfaces bonding in semi-finished product film, obtains the second semi-finished product film；
3) in step 2) upper surface of reconditioning layer pastes a PET mould release membrances in the second semi-finished product film for being obtained；First
The upper surface of PET mould release membrances pastes a PE layers, and it is release that the layer of silica gel lower surface in the second semi-finished product film pastes the 2nd PET
Film, in the lower surface of the 2nd PET mould release membrances the 2nd PE layers are pasted, and obtain prototype diaphragm；The first PET mould release membrances, second
PET mould release membrances are PET film；The first PE layers, the 2nd PE layers are PE films；
4) using mould to by step 3) the prototype diaphragm that obtained carries out hot bending：The mould include male mould and
Master tooling, by step 3) the prototype diaphragm that obtained is fixed on master tooling, master tooling carried out to be preheated to prototype diaphragm
Temperature is 260 DEG C, keeps 5s；The temperature of preheating male mould is to 70 DEG C；The bending angle of the mould is than the Curved screen that matched
The little 13-15 degree of curtain bending angle；Male mould is 250 μm μm with the impression gap of master tooling；Tool is plugged and led in male mould, master mold
Heat pipe；
5) male mould after preheating is pressed into master tooling is fitted together to mould, and constant temperature keeps 3s；Backward male mould, master tooling
Heat pipe circulation be passed through cooling solution, keep 3min；Mould is opened after cooling, the diaphragm after hot bending is obtained；The cooling
The temperature of liquid is -10 DEG C；
6) according to required size to step 5) obtained by hot bending after diaphragm carry out cutting acquisition and can fit cambered surface edge
Diaphragm.
Embodiment 2：
As shown in figure 1, a kind of diaphragm at cambered surface edge of fitting, the diaphragm is layer structure, including layer successively
Folded PE layers, a PET release film layers, coatings, TPU layer, OCA layers, pet layer, layer of silica gel, the 2nd PET are release
Film layer, the 2nd PE layers.The TPU layer is TPU membrane, and the hardness of the TPU membrane is 85A, and thickness is 120 μm μm.The selfreparing
Coating is PET coating；The thickness of the coatings is 25 μm.The OCA layers are OCA double faced adhesive tapes
Layer, the viscosity of the OCA layers of two-sided is 200g；The OCA layers of two-sided is optics rank acrylic glue.The OCA layers
Thickness is 20 μm.The thickness of the layer of silica gel is 30 μm, and viscosity is 90g.The pet layer be PET film, the thickness of the pet layer
For 50 μm.
The preparation method of the diaphragm at the cambered surface edge of fitting, comprises the following steps：
1) TPU membrane is selected as TPU layer, PET raw material by the way of the coating of nick anilox roll
It is coated in TPU membrane upper surface and forms coatings；Obtain the first semi-finished product film；
2) select PET film as pet layer, in the lower surface coating silica gel of PET film layer of silica gel is formed；In the upper table of PET film
Face pastes the optics acrylic glue with biadhesive and forms OCA layers；By the upper surface of OCA layers and step 1) obtained first
TPU lower surfaces bonding in semi-finished product film, obtains the second semi-finished product film；
3) in step 2) upper surface of reconditioning layer pastes a PET mould release membrances in the second semi-finished product film for being obtained；First
The upper surface of PET mould release membrances pastes a PE layers, and it is release that the layer of silica gel lower surface in the second semi-finished product film pastes the 2nd PET
Film, in the lower surface of the 2nd PET mould release membrances the 2nd PE layers are pasted, and obtain prototype diaphragm；The first PET mould release membrances, second
PET mould release membrances are PET film；The first PE layers, the 2nd PE layers are PE films；
4) using mould to by step 3) the prototype diaphragm that obtained carries out hot bending：The mould include male mould and
Master tooling, by step 3) the prototype diaphragm that obtained is fixed on master tooling, master tooling carried out to be preheated to prototype diaphragm
Temperature is 310 DEG C, keeps 20s；The temperature of preheating male mould is to 80 DEG C；The bending angle of the mould is than the Curved screen that matched
The little 13-15 degree of curtain bending angle；Male mould is 350 μm with the impression gap of master tooling；Tool plugs heat conduction in male mould, master mold
Pipe；
5) male mould after preheating is pressed into master tooling is fitted together to mould, and constant temperature keeps 7s；Backward male mould, master tooling
Heat pipe circulation be passed through cooling solution, keep 6min；Mould is opened after cooling, the diaphragm after hot bending is obtained；The cooling
The temperature of liquid is -5 DEG C；
6) according to required size to step 5) obtained by hot bending after diaphragm carry out cutting acquisition and can fit cambered surface edge
Diaphragm.
Embodiment 3：
As shown in figure 1, a kind of diaphragm at cambered surface edge of fitting, the diaphragm is layer structure, including layer successively
Folded PE layers, a PET release film layers, coatings, TPU layer, OCA layers, pet layer, layer of silica gel, the 2nd PET are release
Film layer, the 2nd PE layers.The TPU layer is TPU membrane, and the hardness of the TPU membrane is 85A, and thickness is 150 μm.It is described to review one's lessons by oneself overcoating
Layer is PET coating；The thickness of the coatings is 25 μm.The OCA layers are OCA layers of two-sided,
The viscosity of the OCA layers of two-sided is 200g；The OCA layers of two-sided is optics rank acrylic glue.The thickness of the OCA layers
For 25 μm.The thickness of the layer of silica gel is 30 μm, and viscosity is 100g.The pet layer is PET film, and the thickness of the pet layer is 50
μm。
The preparation method of the diaphragm at the cambered surface edge of fitting, comprises the following steps：
1) TPU membrane is selected as TPU layer, PET raw material by the way of the coating of nick anilox roll
It is coated in TPU membrane upper surface and forms coatings；Obtain the first semi-finished product film；
2) select PET film as pet layer, in the lower surface coating silica gel of PET film layer of silica gel is formed；In the upper table of PET film
Face pastes the optics acrylic glue with biadhesive and forms OCA layers；By the upper surface of OCA layers and step 1) obtained first
TPU lower surfaces bonding in semi-finished product film, obtains the second semi-finished product film；
3) in step 2) upper surface of reconditioning layer pastes a PET mould release membrances in the second semi-finished product film for being obtained；First
The upper surface of PET mould release membrances pastes a PE layers, and it is release that the layer of silica gel lower surface in the second semi-finished product film pastes the 2nd PET
Film, in the lower surface of the 2nd PET mould release membrances the 2nd PE layers are pasted, and obtain prototype diaphragm；The first PET mould release membrances, second
PET mould release membrances are PET film；The first PE layers, the 2nd PE layers are PE films；
4) using mould to by step 3) the prototype diaphragm that obtained carries out hot bending：The mould include male mould and
Master tooling, by step 3) the prototype diaphragm that obtained is fixed on master tooling, master tooling carried out to be preheated to prototype diaphragm
Temperature is 380 DEG C, keeps 15s；The temperature of preheating male mould is to 85 DEG C；The bending angle of the mould is than the Curved screen that matched
The little 13-15 degree of curtain bending angle；Male mould is 450 μm with the impression gap of master tooling；Tool plugs heat conduction in male mould, master mold
Pipe；
5) male mould after preheating is pressed into master tooling is fitted together to mould, and constant temperature keeps 12s；Backward male mould, master mold
The heat pipe circulation of tool is passed through cooling solution, keeps 10min；Mould is opened after cooling, the diaphragm after hot bending is obtained；It is described cold
But the temperature of liquid is 0 DEG C；
6) according to required size to step 5) obtained by hot bending after diaphragm carry out cutting acquisition and can fit cambered surface edge
Diaphragm.
Comparative example 1
A kind of hot bending screen protecting film, including the PE layers, a PET release film layers for stacking gradually from top to bottom, certainly
Repair layer, pet layer, layer of silica gel, the 2nd PET release film layers, the 2nd PE layers；This comparative example be mainly characterized by using pet layer as
Basal layer is coated with the reconditioning layer of 25 μ m-thicks.The material and method prepared used by the diaphragm of this comparative example is same as Example 2.
Comparative example 2
A kind of hot bending screen protecting film, including the PE layers, a PET release film layers for stacking gradually from top to bottom, certainly
Repair layer, TPU layer, layer of silica gel, the 2nd PET release film layers, the 2nd PE layers；This comparative example is mainly characterized by using pure TPU materials
Layer based on material, and coat 25 μm of reparations on its surface；Prepare the material and method used by the diaphragm of this comparative example
It is same as Example 2.
Checking embodiment
Multinomial performance detection is carried out to embodiment 1-3 and comparative example 1,2, is specifically to be reviewed one's lessons by oneself using cross-cut tester test detection
The adhesive force of cladding；By matched screen of fitting, according to the detection shaping situation that can fit, by the cut of reconditioning layer
Repair time detects repairing effect, and after laminating matching screen 24h, whether observation protection film edge tilts bounce-back detection laminating bounce-back
Effect.Detection was met as shown in table 1 below.The scheme of testing result display comparison example 1 is high due to PET film surface smoothness, from
Reparation tack is low, is carried out in the lattice friction testing of rubber hundred with cross-cut tester, and reconditioning layer comes off seriously；While reparation
Edge is more easy to fall off under Frotteurism, and resistance to overturning is poor；Comparative example 2 is pure TPU due to material, and mouldability is poor, bounce-back
Situation substantially, affects pad pasting convenience, causes pad pasting contraposition not accurate.
The testing result of table 1, screen protecting film
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (10)
1. a kind of diaphragm at cambered surface edge of fitting, the diaphragm is layer structure, it is characterised in that including stacking gradually
A PET release film layers, coatings, TPU layer, OCA layers, pet layer, layer of silica gel, the 2nd PET release film layers.
2. the diaphragm at cambered surface edge of fitting according to claim 1, it is characterised in that：The first PET mould release membrances
Layer in the one side of coatings away from being also covered with a PE layers.
3. the diaphragm at cambered surface edge of fitting according to claim 2, it is characterised in that：The 2nd PET mould release membrances
Layer in the one side of layer of silica gel away from being also covered with the 2nd PE layers.
4. the diaphragm at cambered surface edge of fitting according to claim 1, it is characterised in that：The TPU layer is TPU membrane,
The hardness of the TPU membrane is 85A, and thickness is 100 μm -150 μm.
5. the diaphragm at cambered surface edge of fitting according to claim 1, it is characterised in that：The coatings are poly-
PETP coating；The thickness of the coatings is 25 μm.
6. the diaphragm at cambered surface edge of fitting according to claim 1, it is characterised in that：The OCA layers are that OCA is two-sided
Glue-line, the viscosity of the OCA layers of two-sided is 200g；The OCA layers of two-sided is optics rank acrylic glue.
7. the diaphragm at cambered surface edge of fitting according to claim 6, it is characterised in that：The thickness of the OCA layers is
15-25μm。
8. the diaphragm at cambered surface edge of fitting according to claim 1, it is characterised in that：The thickness of the layer of silica gel is
30 μm, viscosity is 80-100g.
9. the diaphragm at cambered surface edge of fitting according to claim 1, it is characterised in that：The pet layer is PET film,
The thickness of the pet layer is 50 μm.
10. a kind of preparation method of the diaphragm at the cambered surface edge that can fit as claimed in claim 1 or 2, it is characterised in that bag
Include following steps：
1) TPU membrane is selected as TPU layer, PET raw material by the way of the coating of nick anilox roll
Coatings are formed in TPU membrane upper surface；Obtain the first semi-finished product film；
2) select PET film as pet layer, in the lower surface coating silica gel of PET film layer of silica gel is formed；Paste in the upper surface of PET film
Cover the optics acrylic glue with biadhesive and form OCA layers；By the upper surface of OCA layers and step 1) obtained first half one-tenth
TPU lower surfaces bonding in product film, obtains the second semi-finished product film；
3) in step 2) upper surface of reconditioning layer pastes a PET mould release membrances in the second semi-finished product film for being obtained；First PET from
The upper surface of type film pastes a PE layers, and the layer of silica gel lower surface in the second semi-finished product film pastes the 2nd PET mould release membrances,
The lower surface of two PET mould release membrances pastes the 2nd PE layers, obtains prototype diaphragm；The first PET mould release membrances, the 2nd PET are release
Film is PET film；The first PE layers, the 2nd PE layers are PE films；
4) using mould to by step 3) the prototype diaphragm that obtained carries out hot bending：The mould includes male mould and master mold
Tool, by step 3) the prototype diaphragm that obtained is fixed on master tooling, master tooling carried out to be preheated to the temperature of prototype diaphragm
For 260-380 DEG C, 5-15s is kept；The temperature of preheating male mould is to 70 DEG C -85 DEG C；The bending angle ratio of the mould is matched
The little 13-15 degree of curve screens bending angle；Male mould is 250 μm -450 μm with the impression gap of master tooling；Male mould, master mold
Interior tool plugs heat pipe；
5) male mould after preheating is pressed into master tooling is fitted together to mould, and constant temperature keeps 3-12s；Backward male mould, master tooling
Heat pipe circulation be passed through cooling solution, keep 3-10min；Mould is opened after cooling, the diaphragm after hot bending is obtained；It is described cold
But the temperature of liquid is -10 DEG C to 0 DEG C；
6) according to required size to step 5) obtained by hot bending after diaphragm carry out cutting and obtain the guarantor at cambered surface edge of can fitting
Cuticula.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611225808.5A CN106626568B (en) | 2016-12-27 | 2016-12-27 | A kind of protective film and preparation method thereof being bonded cambered surface edge |
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| CN201611225808.5A CN106626568B (en) | 2016-12-27 | 2016-12-27 | A kind of protective film and preparation method thereof being bonded cambered surface edge |
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| CN106626568B CN106626568B (en) | 2019-05-07 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107253357A (en) * | 2017-07-12 | 2017-10-17 | 苏州安洁科技股份有限公司 | A kind of flexible explosion-proof diaphragm |
| CN107955554A (en) * | 2017-11-20 | 2018-04-24 | 广州易航电子有限公司 | A kind of hot bending PET protection film and preparation method thereof |
| CN108081727A (en) * | 2018-02-05 | 2018-05-29 | 东莞市亮雅塑料制品有限公司 | TPU protective films and preparation method thereof |
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| WO2019007350A1 (en) * | 2017-07-06 | 2019-01-10 | Oppo广东移动通信有限公司 | Cutting die, protective film for electronic device and preparation method therefor, and electronic device |
| CN107253357A (en) * | 2017-07-12 | 2017-10-17 | 苏州安洁科技股份有限公司 | A kind of flexible explosion-proof diaphragm |
| CN107955554A (en) * | 2017-11-20 | 2018-04-24 | 广州易航电子有限公司 | A kind of hot bending PET protection film and preparation method thereof |
| CN107955554B (en) * | 2017-11-20 | 2020-08-07 | 广州易航电子有限公司 | Hot-bending PET protective film and preparation method thereof |
| CN108189374A (en) * | 2017-12-27 | 2018-06-22 | 深圳市精益精科技有限公司 | Curved surface protective film processing and forming technology and curved surface protective film |
| CN108116020A (en) * | 2018-02-05 | 2018-06-05 | 东莞市亮雅塑料制品有限公司 | 3D Curved screen TPU protective films and preparation method thereof |
| CN108081727A (en) * | 2018-02-05 | 2018-05-29 | 东莞市亮雅塑料制品有限公司 | TPU protective films and preparation method thereof |
| CN108300353A (en) * | 2018-02-06 | 2018-07-20 | 东莞市纳利光学材料有限公司 | A kind of TPU protective films and preparation method thereof |
| CN108300353B (en) * | 2018-02-06 | 2020-12-15 | 东莞市纳利光学材料有限公司 | TPU (thermoplastic polyurethane) protective film and preparation method thereof |
| CN109130350A (en) * | 2018-06-14 | 2019-01-04 | 广州易航电子有限公司 | A kind of bend glass protective film and preparation method thereof |
| CN109054675A (en) * | 2018-07-24 | 2018-12-21 | 深圳市键键通科技有限公司 | A kind of electronic equipment film and preparation method thereof |
| CN108822758A (en) * | 2018-07-27 | 2018-11-16 | 程强 | A kind of Mobile phone film and preparation method thereof |
| CN110202901A (en) * | 2019-05-28 | 2019-09-06 | 深圳华硕新材料应用科技有限公司 | The TPU screen protector and preparation method thereof of unlocked by fingerprint under light sensation screen |
| US11708469B2 (en) | 2020-12-07 | 2023-07-25 | Saint-Gobain Performance Plastics Corporation | Composite film and methods of forming a composite film |
| CN113667422A (en) * | 2021-08-31 | 2021-11-19 | 太湖金张科技股份有限公司 | Coating preparation method for improving glue overflow performance of AB double-sided adhesive tape |
| WO2023077729A1 (en) * | 2021-11-04 | 2023-05-11 | 深圳市蓝禾技术有限公司 | Dust cleaning adhesive layer and manufacturing method therefor, dust cleaning film and manufacturing method therefor and film attaching method thereof, and dust cleaning film set |
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