CN108327376A - The preparation method and its equipment of a kind of compound brightening film sheet or light diffusing sheet - Google Patents
The preparation method and its equipment of a kind of compound brightening film sheet or light diffusing sheet Download PDFInfo
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- CN108327376A CN108327376A CN201810050763.5A CN201810050763A CN108327376A CN 108327376 A CN108327376 A CN 108327376A CN 201810050763 A CN201810050763 A CN 201810050763A CN 108327376 A CN108327376 A CN 108327376A
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- film sheet
- knurling rolls
- brightening film
- micro
- brightening
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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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
- B32B38/06—Embossing
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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
- B32B7/08—Interconnection of layers by mechanical means
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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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
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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
- B32B2457/00—Electrical equipment
Abstract
In order to solve the problems, such as existing three layers of lamination layer structure light diffusing sheet complex process, of high cost, sticky poor, yielding, the present invention proposes a kind of preparation method of double-layer composite light diffusing sheet, its mainly by by the polystyrene after melting after extruder die head squeezes out through prolonging pressure it is cooling after, form the brightening film sheet brightening film sheet A with the micro-structure and brightening film sheet brightening film sheet B with micro-structure；Then brightening film sheet A and B is carried out to heat compound at 70 DEG C~180 DEG C.In addition, the invention also proposes a kind of equipment being used to prepare the above double-layer composite light diffusing sheet comprising：Two groups of extruder die heads, two groups of knurling rolls are to a, fixing roller, wherein molten polystyrene is passing through two groups of knurling rolls respectively at 215 DEG C~230 DEG C after two extruder die heads, it is respectively formed the brightening film sheet brightening film sheet A with micro-structure and the brightening film sheet brightening film sheet B with micro-structure, it is compound then to pass through an one of fixing roller and knurling rolls centering knurling rolls progress hot pressing.
Description
Technical field
The present invention relates to the preparation method of brightening film sheet and its equipment, specifically, being related to a kind of compound increment diaphragm
Preparation method and its equipment.
Background technology
Currently, compound brightening film sheet on the market is in order to meet preferable translucency and soft degree, it will usually use three
The lamination layer structure of layer, wherein first layer are the brightening film sheet brightening film sheet with hemispherical micro-structure, and the second layer is band triangular pyramid
The brightening film sheet of shape micro-structure, third layer are the brightening film sheet brightness enhancement film for the micro-structure that big triangular pyramid is arranged alternately with small triangular pyramid
Piece, each layer of main body are all made of biaxial tension polyethylene terephthalate (PET), viscose glue are used between three-decker
Mode is compound to carry out, however mainly has following three point defect using the light diffusing sheet finished product that this complex method is made：1, it adopts
Two layers of light diffusing sheet carried out with the mode of viscose glue compound, since the mobility of viscose glue is higher, viscose glue can be under gravity
It is collapsed upon in the groove of micro-structure so that the space of micro-structure and last layer diffuser plate outer surface is adhesive to be filled up, and shadow is so understood
Ring micro-structure mirror effect so that light scattering, reflection, refraction efficiency reduce；2, due to the first of three layers of composite construction
The material of layer, the second layer and third layer is different so that the differences such as physical characteristic of each layer, such as convergent force, internal stress make
Three layers of diffuser plate deformation direction and deformation quantity it is different so that fall off between layers, warped, deformation；3, usual feelings
Under condition, due to the limitation of processing technology, cost and material self character so that the brightening film sheet of above three layers of the lamination layer structure
Thickness be typically only capable to accomplish 0.5mm or so, then this thickness only has the compound brightening film sheet of 0.5mm or so in full run-down type
On TV, it will usually because the thickness of the brightening film sheet of lamination layer structure is small, material deflection is small, to lead to central region sinking
Phenomenon can be only applied to the brightening film sheet of above three layers of the lamination layer structure on 32 cun or less TV.
In addition, the production technology and cost of the above compound brightening film sheet of production are also very high, main cause has following two points：
1, the equipment price for producing the above compound brightening film sheet is higher, and technique is more complex, therefore causes final finished product price high；2、
The price for producing the raw material of the above diffuser plate is high, causes final finished product price high.
Invention content
In order to solve problem above, the present invention proposes a kind of preparation method and equipment of double-layer composite brightening film sheet, adopts
With the compound brightening film sheet of the present invention, the production of the viscose glue type composite brightening film piece of the above three-decker can be effectively reduced
Cost, while ensureing the light transmittance of viscose glue type composite brightening film piece and soft degree, while the viscose glue type of three-decker can also be solved
Application of the composite brightening film piece on full run-down type TV.
A kind of preparation method of double-layer composite brightening film sheet comprising following steps：
Step1 forms the polystyrene after melting after the extrusion of extruder die head 11 and 12 after prolonging pressure cooling
Brightening film sheet A with the micro-structure and brightness enhancement film lamella B with micro-structure；
Step2, by the particulate layer of the plane layer of the brightening film sheet A with micro-structure and brightening film sheet B with micro-structure 70
DEG C~180 DEG C, and it is compound that heat is carried out when relative velocity is zero.
Further, in the Step1, polystyrene includes non-modified polystyrene and modified polyphenyl
Ethylene；Preferably, using optics polystyrene；
It is further preferred that in the Step1, expand containing organosilicon light diffusing agent, silica light in polystyrene
One or more of which in powder, acrylic sphere light diffusing agent, can be prepared into light diffusing sheet layer.
It is further preferred that in the Step1, by the polystyrene of extruder die head 11 and extruder die head 12
Formula it is completely the same.
Further, in the Step1, extruder includes single screw extrusion machine and double screw extruder.
Further, in the Step1, the temperature of the polystyrene of melting when being squeezed out from extruder die head is
200 DEG C~230 DEG C.
Further, in the Step1, the polystyrene after melting is after extruder die head 11 by knurling rolls pair
21 form the brightening film sheet A with micro-structure, wherein upper knurling rolls 211 are smooth roll, lower knurling rolls 212 are patterned roll；After melting
Polystyrene forms the brightening film sheet B with micro-structure after extruder die head 12 by knurling rolls pair 22, wherein upper knurling rolls
221 be patterned roll, and lower knurling rolls 222 are smooth roll.
Further, the increment diaphragm in method made above can replace with diffuser plate in whole or in part.
Further, in some case study on implementation, the upper knurling rolls 211 in knurling rolls pair 21 can move up and down, and push
Flower roller 212 can move left and right, to adjust the distance between the upper knurling rolls 211 in knurling rolls pair 21 and lower knurling rolls 212,
To the thickness of brightening film sheet A of the control with micro-structure.Upper knurling rolls 221 in knurling rolls pair 22 can move left and right, and push
Flower roller 222 can move up and down, to adjust the distance between the upper knurling rolls 221 in knurling rolls pair 22 and lower knurling rolls 222,
To the thickness of brightening film sheet B of the control with micro-structure.
Further, in other case study on implementation, knurling rolls knurling rolls pair 21 move left and right, and control lower knurling rolls 212
The distance between fixed knurling rolls 23 then adjust upper knurling rolls to control the overall thickness of double-layer composite brightening film sheet
211 move up and down, to the thickness of brightening film sheet A of the control with micro-structure.It adjusts knurling rolls pair 22 to move left and right, adjusts and push
Flower roller 222 moves up and down, to the thickness of brightening film sheet B of the control with micro-structure.
Wherein, contain hot water in knurling rolls pair 21 and knurling rolls pair 22, and hot water temperature is 70 DEG C~100 DEG C；Wherein spend
Temperature of the temperature of hot water higher than the hot water in smooth roll 211 and 222 in line roller 212 and 221.Wherein, the temperature of patterned roll is set
Slightly higher purpose is to make it in order to enable the plane that the aerial high temperature of exposure prolongs the polystyrene after pressure passes through secondary heating
Pressure forming is carried out at a relatively high temperature in the superficial layer for needing to form micro-structure, is easier to generate embossing in this way,
And can be slightly lower without the temperature of the knurling rolls of the side of embossing in the opposite face of micro-structure, heat source can be not only saved in this way,
The side to opposite without embossing in micro-structure can also be enable to be cooled and shaped as early as possible simultaneously.
Further, the hot water in the upper knurling rolls 211 wherein in knurling rolls pair 21 is controlled at 90 DEG C, lower knurling rolls
Hot water in 212 is controlled at 100 DEG C；The hot water in upper knurling rolls 221 in knurling rolls pair 22 controlled at 100 DEG C,
Hot water in lower knurling rolls 222 is controlled at 90 DEG C.
Further, the brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure be under the action of draft gear,
The speed of service of the two keeps identical, and speed is 5~8m/min.
Further, also include a fixation knurling rolls 23 in the step Step2, it can be with knurling rolls pair 21
In lower knurling rolls 212 match, the plane layer to brightening film sheet A of the control with micro-structure and brightening film sheet B with micro-structure
Particulate layer carried out in the gap of the two heat it is compound.
Further, fixed knurling rolls 23 use fixed structure, can not adjust its movement；Lower embossing in knurling rolls pair 21
Roller 212 can carry out left and right adjusting, to control fixed knurling rolls 23 at a distance from the lower knurling rolls 212 in knurling rolls pair 21,
Thus the thickness after the control brightening film sheet A with the micro-structure and brightening film sheet B with micro-structure is compound.
Further, (overall thickness -30um of the brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure) Gu≤
Determine knurling rolls 23 at a distance from the lower knurling rolls 212 in knurling rolls pair 21≤the brightening film sheet A with micro-structure with micro-structure
The overall thickness of brightening film sheet B.
Further, fixed knurling rolls 23 are 1mm~5mm at a distance from the lower knurling rolls 212 in knurling rolls pair 21.
A kind of equipment being used to prepare the above double-layer composite brightening film sheet comprising：Extruder die head 11 melts polyphenyl
Ethylene is squeezed out at 215 DEG C~230 DEG C from extruder die head 11, is squeezed by knurling rolls pair 21 and is formed the brightening film sheet with micro-structure
A, the upper knurling rolls 211 of wherein knurling rolls pair 21 are smooth roll, lower knurling rolls 212 are patterned roll；Further include extruder die head 12, melts
Melt polystyrene to squeeze out from extruder die head 12 at 215 DEG C~230 DEG C, is squeezed by knurling rolls pair 22 and form the increasing with micro-structure
Bright diaphragm B, the upper knurling rolls 221 of wherein knurling rolls pair 22 are patterned roll, lower knurling rolls 222 are smooth roll；Blast with micro-structure
It is compound that diaphragm A and brightening film sheet B with micro-structure by the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21 carries out heat,
In, (overall thickness -30um of the brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure)≤fixing roller 23 and knurling rolls
To the overall thickness of distance≤brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure of 21 lower knurling rolls 212.
Further, it is used to prepare as described above in the equipment of the above double-layer composite brightening film sheet, knurling rolls pair 21
Upper knurling rolls 211 can be with left and right adjusting, for adjusting upper knurling rolls 211 and lower embossing with up and down adjustment, lower knurling rolls 212
The distance between roller 212, to the thickness of brightening film sheet A of the control with micro-structure.
Further, it is used to prepare as described above in the equipment of the above double-layer composite brightening film sheet, knurling rolls pair 22
Upper knurling rolls 221 can be with up and down adjustment, for adjusting upper knurling rolls 221 and lower embossing with left and right adjusting, lower knurling rolls 222
The distance between roller 222, to the thickness of brightening film sheet B of the control with micro-structure.
Further, it is used to prepare as described above in the equipment of the above double-layer composite brightening film sheet, fixing roller 23 is solid
It is fixed, it is unadjustable, and spend the lower knurling rolls 212 of roller pair 21 can be with left and right adjusting, so as to control fixing roller 23 and flower roller pair
The distance between 21 lower knurling rolls 212, to which brightening film sheet A of the control with the micro-structure and brightening film sheet B with micro-structure is viscous
The overall thickness of two-layer compound layer after conjunction.
Further, fixed knurling rolls 23 are 1mm~5mm at a distance from the lower knurling rolls 212 in knurling rolls pair 21.
Further, hot water is contained in knurling rolls pair 21 and knurling rolls pair 22 as described above, and hot water temperature is 70 DEG C
~100 DEG C；Temperature of the temperature of hot water higher than the hot water in smooth roll 211 and 222 wherein in patterned roll 212 and 221.
Further, the hot water in the upper knurling rolls 211 wherein in knurling rolls pair 21 is controlled at 90 DEG C, lower knurling rolls
Hot water in 212 is controlled at 100 DEG C；The hot water in upper knurling rolls 221 in knurling rolls pair 22 controlled at 100 DEG C,
Hot water in lower knurling rolls 222 is controlled at 90 DEG C.
Further, the temperature when brightening film sheet A with micro-structure is bonded with the brightening film sheet B with micro-structure is 70 DEG C~
180℃。
The course of work of the equipment for being used to prepare the above double-layer composite brightening film sheet of the present invention is as follows：
First, the lower knurling rolls 212 of left and right adjusting knurling rolls pair 21 control the distance between itself and fixing roller 23, determine
The thickness of final finished double-layer composite brightening film sheet；Then, the upper knurling rolls 211 of up and down adjustment knurling rolls pair 21, control pressure
Flower the distance between roller 211 and lower knurling rolls 212, determine the thickness of the brightening film sheet A with micro-structure；Then, left and right adjusting pressure
Knurling rolls 222 under the upper knurling rolls 221 of flower roller pair 22, up and down adjustment, control between knurling rolls 221 and lower knurling rolls 222 away from
From the thickness of the determining brightening film sheet B with micro-structure.After the above preconditioning, you can determine the brightening film sheet A with micro-structure
Thickness, the thickness of brightening film sheet B with micro-structure and the overall thickness of double-layer composite brightening film sheet.
Alternatively, first, knurling rolls knurling rolls pair 21 move left and right, control between lower knurling rolls 212 and fixed knurling rolls 23
Distance then adjust upper knurling rolls 211 to control the overall thickness of double-layer composite brightening film sheet and move up and down, to control
Make the thickness of the brightening film sheet A with micro-structure.It adjusts knurling rolls pair 22 to move left and right, adjusts lower knurling rolls 222 and move up and down, from
And control the thickness of the brightening film sheet B with micro-structure.
200 DEG C~230 DEG C polystyrene after melting prolong pressure cooling after extruder die head 1 by knurling rolls pair 21,
Wherein, 211 counterclockwise movement of upper knurling rolls, 212 clockwise movement of lower knurling rolls, and movement velocity is identical, drives band micro-structure
Brightening film sheet A travelled forward with certain speed.
200 DEG C~230 DEG C polystyrene after melting prolong pressure cooling after extruder die head 2 by knurling rolls pair 22,
Wherein, 221 clockwise movement of upper knurling rolls, 222 counterclockwise movement of lower knurling rolls, and movement velocity is identical, drives band micro-structure
Brightening film sheet B travelled forward with certain speed.
Brightening film sheet A with the micro-structure and brightening film sheet B with micro-structure is moved with identical speed to certain direction
And converge, then by the gap of the lower knurling rolls 212 and fixing roller 23 of knurling rolls pair 21, the bilayer after extruding formation heat is compound
Compound brightening film sheet.The temperature of wherein hot compound tense is 70 DEG C~180 DEG C, at this temperature, the brightening film sheet A with micro-structure
It is not solidified with the brightening film sheet B with micro-structure, still maintains certain viscosity, therefore can make brightening film sheet A and brightness enhancement film
Piece B carries out adhesion.Meanwhile keeping (overall thickness -30um of the brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure)
The distance of the lower knurling rolls 212 of≤fixing roller 23 and knurling rolls pair 21≤brightening film sheet A with micro-structure and the increasing with micro-structure
The overall thickness of bright diaphragm B, can so enable brightening film sheet A of the diffuser plate with micro-structure with the brightening film sheet of micro-structure
B generates adhesion, but ensures that the brightening film sheet B with micro-structure will not be completely filled out by the plane of brightening film sheet A completely, keeps one
The micro-structure of partial brightening film sheet B, and protected between the plane of brightening film sheet A and the combination of the micro-structure of brightening film sheet B
Hold the air of a part.
The equipment and its double-layer composite brightness enhancement film using the present invention for being used to prepare the above double-layer composite brightening film sheet
The preparation method of piece has following advantage：
1. due to compound in 70 DEG C~180 DEG C progress so that the brightening film sheet A with micro-structure of same material and with micro- knot
The brightening film sheet B of structure, can effectively bond, will not fall off, solve traditional viscose glue it is compound when due to viscose glue mobility compared with
Height, viscose glue can be collapsed upon in the groove of micro-structure under gravity so that micro-structure and last layer diffuser plate outer surface
Space is adhesive to be filled up, and the mirror effect of micro-structure can be so influenced so that light scattering, reflection, refraction efficiency reduce ask
Topic.
2. since brightening film sheet A is identical with material used in the brightening film sheet B with micro-structure so that two layers of object
It is identical to manage characteristic, it is different to solve the convergent force because of different materials, internal stress so that traditional compound brightening film sheet and layer it
Between fall off, warped, deformation the shortcomings that.
3. the raw material of the brightening film sheet A formed and the brightening film sheet B with micro-structure are polystyrene, cost is more cheap,
Less than the 1/10 of biaxial tension PET and acrylic glue price, but reach saturating with three layers of compound brightening film sheet
Luminosity and soft degree, reduce cost.
4. the thickness of the double-layer composite brightening film sheet of the present invention can accomplish 0.5mm~3.3mm, biography is effectively overcome
The limitation of the excessively thin caused application on straight-down negative TV of thickness of three layers of compound brightening film sheet of system.
5. the equipment and technique of the double-layer composite brightening film sheet of the present invention are all very simple.
Description of the drawings：
Specific implementation mode is further described below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the brightening film sheet of three layers traditional of lamination layer structure.
Fig. 2 is the flow chart of the preparation method of the double-layer composite brightening film sheet of the present invention.
Fig. 3 is the artwork of the double-layer composite brightening film sheet of the present invention.
Fig. 4 is the structural schematic diagram of brightening film sheet A, B with micro-structure and final dual brightness enhancement diaphragm.
Primary structure number explanation
Following specific implementation mode will be further illustrated the present invention in conjunction with above-mentioned attached drawing.
Specific implementation mode
Case 1 is embodied：
A kind of preparation method of double-layer composite brightening film sheet comprising following steps：
Step1 squeezes out 220 DEG C of polystyrene of the melting of same recipe from extruder die head 1 and 2.
Step2, the polystyrene for heating state prolong pressure cooling by knurling rolls pair 21 and knurling rolls pair 22, are respectively formed band
The brightening film sheet A of micro-structure and brightness enhancement film lamella B with micro-structure, the wherein movement velocity of diffuser plate A and B are 5.5m/min.
Step3, by the brightening film sheet A with micro-structure with when the brightening film sheet B of micro-structure is at 100 DEG C carry out heat it is compound.
The equipment that the preparation method of double-layer composite brightening film sheet as above uses, including：Extruder die head 11 melts polyphenyl
Ethylene is squeezed out at 220 DEG C from extruder die head 11, and by knurling rolls pair 21, (wherein the upper knurling rolls 211 of knurling rolls pair 21 are light
Roller, lower knurling rolls 212 are patterned roll) brightening film sheet A of the formation with micro-structure is squeezed, the wherein height of basal layer A1 is 210um,
The height of micro-structure A2 is 215um；Further include extruder die head 12, molten polystyrene is squeezed at 220 DEG C from extruder die head 12
Go out, is squeezed by knurling rolls pair 22 (the upper knurling rolls 221 of wherein knurling rolls pair 22 are patterned roll, lower knurling rolls 222 are smooth roll)
The brightening film sheet B with micro-structure is formed, the wherein height of basal layer B1 is 350um, and the height of micro-structure B2 is 360um；With micro-
The brightening film sheet A of the structure and brightening film sheet B with micro-structure is carried out by the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21
Heat is compound, wherein the distance of the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21 is 1135um.
Case 2 is embodied：
A kind of preparation method of double-layer composite brightening film sheet comprising following steps：
Step1 squeezes out 218 DEG C of optics polystyrene of the melting of same recipe from extruder die head 1 and 2.
Step2, the optics polystyrene for heating state prolong pressure cooling by knurling rolls pair 21 and knurling rolls pair 22, respectively
The brightening film sheet A with the micro-structure and brightness enhancement film lamella B with micro-structure is formed, the wherein movement velocity of diffuser plate A and B is 7m/
min。
Step3, by the brightening film sheet A with micro-structure with when the brightening film sheet B of micro-structure is at 80 DEG C carry out heat it is compound.
The equipment that the preparation method of double-layer composite brightening film sheet as above uses, including：Extruder die head 11 melts polyphenyl
Ethylene is squeezed out at 218 DEG C from extruder die head 11, and by knurling rolls pair 21, (wherein the upper knurling rolls 211 of knurling rolls pair 21 are light
Roller, lower knurling rolls 212 are patterned roll) brightening film sheet A of the formation with micro-structure is squeezed, the wherein height of basal layer A1 is 220um,
The height of micro-structure A2 is 225um；Further include extruder die head 12, molten polystyrene is squeezed at 220 DEG C from extruder die head 12
Go out, is squeezed by knurling rolls pair 22 (the upper knurling rolls 221 of wherein knurling rolls pair 22 are patterned roll, lower knurling rolls 222 are smooth roll)
The brightening film sheet B with micro-structure is formed, the wherein height of basal layer B1 is 2900um, and the height of micro-structure B2 is 360um；With micro-
The brightening film sheet A of the structure and brightening film sheet B with micro-structure is carried out by the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21
Heat is compound, wherein the distance of the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21 is 3685um.
Case 3 is embodied：
A kind of preparation method of double-layer composite brightening film sheet comprising following steps：
Step1 squeezes out 225 DEG C of optics polystyrene of the melting of same recipe from extruder die head 1 and 2.
Step2, the optics polystyrene for heating state prolong pressure cooling by knurling rolls pair 21 and knurling rolls pair 22, respectively
It forms the brightening film sheet A with micro-structure and the brightness enhancement film lamella B with micro-structure, the movement velocity of wherein diffuser plate A and B is
7.8m/min。
Step3, by the brightening film sheet A with micro-structure with when the brightening film sheet B of micro-structure is at 150 DEG C carry out heat it is compound.
The equipment that the preparation method of double-layer composite brightening film sheet as above uses, including：Extruder die head 11 melts polyphenyl
Ethylene is squeezed out at 225 DEG C from extruder die head 11, and by knurling rolls pair 21, (wherein the upper knurling rolls 211 of knurling rolls pair 21 are light
Roller, lower knurling rolls 212 are patterned roll) brightening film sheet A of the formation with micro-structure is squeezed, the wherein height of basal layer A1 is 300um,
The height of micro-structure A2 is 210um；Further include extruder die head 12, molten polystyrene is squeezed at 220 DEG C from extruder die head 12
Go out, is squeezed by knurling rolls pair 22 (the upper knurling rolls 221 of wherein knurling rolls pair 22 are patterned roll, lower knurling rolls 222 are smooth roll)
The brightening film sheet B with micro-structure is formed, the wherein height of basal layer B1 is 1000um, and the height of micro-structure B2 is 320um；With micro-
The brightening film sheet A of the structure and brightening film sheet B with micro-structure is carried out by the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21
Heat is compound, wherein the distance of the lower knurling rolls 212 of fixing roller 23 and knurling rolls pair 21 is 1800um.
The course of work of the equipment of the above double-layer composite brightening film sheet is used to prepare in the above specific implementation case 1~3
It is as follows：
First, the lower knurling rolls 212 of left and right adjusting knurling rolls pair 21 control the distance between itself and fixing roller 23, determine
The thickness of final finished double-layer composite brightening film sheet；Then, the upper knurling rolls 211 of up and down adjustment knurling rolls pair 21, control pressure
Flower the distance between roller 211 and lower knurling rolls 212, determine the thickness of the brightening film sheet A with micro-structure；Then, left and right adjusting pressure
Knurling rolls 222 under the upper knurling rolls 221 of flower roller pair 22, up and down adjustment, control between knurling rolls 221 and lower knurling rolls 222 away from
From the thickness of the determining brightening film sheet B with micro-structure.After the above preconditioning, you can determine the brightening film sheet A with micro-structure
Thickness, the thickness of brightening film sheet B with micro-structure and the overall thickness of double-layer composite brightening film sheet.
200 DEG C~230 DEG C polystyrene after melting prolong pressure cooling after extruder die head 1 by knurling rolls pair 21,
Wherein, 211 counterclockwise movement of upper knurling rolls, 212 clockwise movement of lower knurling rolls, and movement velocity is identical, drives band micro-structure
Brightening film sheet A travelled forward with certain speed.
200 DEG C~230 DEG C polystyrene after melting prolong pressure cooling after extruder die head 2 by knurling rolls pair 22,
Wherein, 221 clockwise movement of upper knurling rolls, 222 counterclockwise movement of lower knurling rolls, and movement velocity is identical, drives band micro-structure
Brightening film sheet B travelled forward with certain speed.
Brightening film sheet A with the micro-structure and brightening film sheet B with micro-structure is moved with identical speed to certain direction
And converge, then by the gap of the lower knurling rolls 212 and fixing roller 23 of knurling rolls pair 21, the bilayer after extruding formation heat is compound
Compound brightening film sheet.The temperature of wherein hot compound tense is 70 DEG C~180 DEG C, at this temperature, the brightening film sheet A with micro-structure
It is not solidified with the brightening film sheet B with micro-structure, still maintains certain viscosity, therefore can make brightening film sheet A and brightness enhancement film
Piece B carries out adhesion.Meanwhile keeping (overall thickness -30um of the brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure)
The distance of the lower knurling rolls 212 of≤fixing roller 23 and knurling rolls pair 21≤brightening film sheet A with micro-structure and the increasing with micro-structure
The overall thickness of bright diaphragm B, can so enable brightening film sheet A of the diffuser plate with micro-structure with the brightening film sheet of micro-structure
B generates adhesion, but ensures that the brightening film sheet B with micro-structure will not be completely filled out by the plane of brightening film sheet A completely, keeps one
The micro-structure of partial brightening film sheet B, and protected between the plane of brightening film sheet A and the combination of the micro-structure of brightening film sheet B
Hold the air of a part.
The equipment and its double-layer composite brightness enhancement film using the present invention for being used to prepare the above double-layer composite brightening film sheet
The preparation method of piece has following advantage：
1. due to compound in 70 DEG C~180 DEG C progress so that the brightening film sheet A with micro-structure of same material and with micro- knot
The brightening film sheet B of structure, can effectively bond, will not fall off, solve traditional viscose glue it is compound when due to viscose glue mobility compared with
Height, viscose glue can be collapsed upon in the groove of micro-structure under gravity so that micro-structure and last layer diffuser plate outer surface
Space is adhesive to be filled up, and the mirror effect of micro-structure can be so influenced so that light scattering, reflection, refraction efficiency reduce ask
Topic.
2. since brightening film sheet A is identical with material used in the brightening film sheet B with micro-structure so that two layers of object
It is identical to manage characteristic, it is different to solve the convergent force because of different materials, internal stress so that traditional compound brightening film sheet and layer it
Between fall off, warped, deformation the shortcomings that.
3. the raw material of the brightening film sheet A formed and the brightening film sheet B with micro-structure are polystyrene, cost is more cheap,
Less than the 1/10 of biaxial tension PET and acrylic glue price, but reach saturating with three layers of compound brightening film sheet
Luminosity and soft degree, reduce cost.
4. the thickness of the double-layer composite brightening film sheet of the present invention can accomplish 0.5mm~3.3mm, biography is effectively overcome
The limitation of the excessively thin caused application on straight-down negative TV of thickness of three layers of compound brightening film sheet of system.
5. the equipment and technique of the double-layer composite brightening film sheet of the present invention are all very simple.
Claims (10)
1. a kind of preparation method of double-layer composite brightening film sheet comprising following steps：
Step1 forms the polystyrene after melting after extruder die head (11) and (12) squeeze out after prolonging pressure cooling
Brightening film sheet A with the micro-structure and brightness enhancement film lamella B with micro-structure；
Step2, by the particulate layer of the plane layer of the brightening film sheet A with micro-structure and brightening film sheet B with micro-structure 70 DEG C~
180 DEG C, and it is compound that heat is carried out when relative velocity is zero；
Wherein, the increment diaphragm A in above step and increment diaphragm B can be substituted for diffusion barrier in whole or in part.
2. the preparation method of double-layer composite brightening film sheet as described in claim 1, it is characterised in that：In the Step1,
Polystyrene includes non-modified polystyrene and modified polystyrene.
3. the preparation method of double-layer composite brightening film sheet as described in claim 1, it is characterised in that：In the Step1,
Formula by extruder die head (11) and the polystyrene of (12) is completely the same.
4. the preparation method of double-layer composite brightening film sheet as described in claim 1, it is characterised in that：In the Step1,
The temperature of the polystyrene of melting when being squeezed out from extruder die head is 200 DEG C~230 DEG C.
5. the preparation method of double-layer composite brightening film sheet as described in claim 1, it is characterised in that：Blast with micro-structure
Under the action of draft gear, the speed of service of the two keeps identical, and speed is 5 by diaphragm A and brightening film sheet B with micro-structure
~8m/min.
6. the preparation method of double-layer composite brightening film sheet as described in claim 1, it is characterised in that：Bilayer after heat is compound
The overall thickness of the thickness of compound brightening film sheet≤brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure.
7. a kind of equipment of double-layer composite brightening film sheet comprising：Extruder die head (11), molten polystyrene is at 200 DEG C
~230 DEG C squeeze out from extruder die head (11), are squeezed (21) by knurling rolls and form the brightening film sheet A with micro-structure, wherein
Knurling rolls are smooth roll to the upper knurling rolls (211) of (21), lower knurling rolls (212) are patterned roll；Further include extruder die head (12),
Molten polystyrene is squeezed out at 200 DEG C~230 DEG C from extruder die head (12), is squeezed (22) and is formed with micro- knot by knurling rolls
The brightening film sheet B of structure, wherein knurling rolls are patterned roll to the upper knurling rolls (221) of (22), lower knurling rolls (222) are smooth roll；Band
The brightening film sheet A of the micro-structure and brightening film sheet B with micro-structure is by fixing roller (23) and knurling rolls to the lower knurling rolls of (21)
(212) it is compound to carry out heat, wherein (overall thickness -30um of the brightening film sheet A with micro-structure and the brightening film sheet B with micro-structure)
≤ fixing roller (23) and knurling rolls are to distance≤brightening film sheet A with micro-structure of the lower knurling rolls (212) of (21) and with micro- knot
The overall thickness of the brightening film sheet B of structure.
8. the equipment of double-layer composite brightening film sheet as claimed in claim 7, it is characterised in that：Upper pressure of the knurling rolls to (21)
Flower roller (211) can be with left and right adjusting, for adjusting upper knurling rolls (211) and lower embossing with up and down adjustment, lower knurling rolls (212)
The distance between roller (212), to the thickness of brightening film sheet A of the control with micro-structure；Upper knurling rolls of the knurling rolls to (22)
It (221) can be with up and down adjustment, for adjusting upper knurling rolls (221) and lower knurling rolls with left and right adjusting, lower knurling rolls (222)
The distance between (222), to the thickness of brightening film sheet B of the control with micro-structure；Fixing roller (23) is fixed, unadjustable, and
Flower roller can be with left and right adjusting, so as to control fixing roller (23) with flower roller under (21) to the lower knurling rolls (212) of (21)
The distance between knurling rolls (212), after being bonded with the brightening film sheet B with micro-structure to brightening film sheet A of the control with micro-structure
Two-layer compound layer overall thickness；Alternatively, knurling rolls knurling rolls can move left and right (21), upper knurling rolls (211) can more than
Lower movement, knurling rolls can move left and right (22), and lower knurling rolls (222) can move up and down, and fixing roller (23) is unadjustable.
9. the equipment of double-layer composite brightening film sheet as claimed in claim 7, it is characterised in that：Fixed knurling rolls (23) and pressure
Flower roller is 1mm~5mm to the distance of the lower knurling rolls (212) in (21).
10. the equipment of double-layer composite brightening film sheet as claimed in claim 7, it is characterised in that：Knurling rolls are to (21) and pressure
Flower roller is to containing hot water in (22), and hot water temperature is 70 DEG C~100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810050763.5A CN108327376A (en) | 2018-01-18 | 2018-01-18 | The preparation method and its equipment of a kind of compound brightening film sheet or light diffusing sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810050763.5A CN108327376A (en) | 2018-01-18 | 2018-01-18 | The preparation method and its equipment of a kind of compound brightening film sheet or light diffusing sheet |
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| CN108327376A true CN108327376A (en) | 2018-07-27 |
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ID=62925264
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|---|---|---|---|
| CN201810050763.5A Pending CN108327376A (en) | 2018-01-18 | 2018-01-18 | The preparation method and its equipment of a kind of compound brightening film sheet or light diffusing sheet |
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| CN106170733A (en) * | 2014-04-09 | 2016-11-30 | 国民大学校产学协力团 | Back light unit and the display device including it |
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| US20050257363A1 (en) * | 2004-05-21 | 2005-11-24 | Kaihsin Li | Optical diffusion plate applied for direct-type backlight module and manufacturing method thereof |
| CN101545607A (en) * | 2008-03-24 | 2009-09-30 | 中强光电股份有限公司 | Backlight module for flat panel display |
| KR20110017194A (en) * | 2009-08-13 | 2011-02-21 | 웅진케미칼 주식회사 | High brightness diffussion film improved engraving proportion and preparing thereof |
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Application publication date: 20180727 |