CN108044904A - A kind of preparation method of three-in-one light diffusing sheet - Google Patents
A kind of preparation method of three-in-one light diffusing sheet Download PDFInfo
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- CN108044904A CN108044904A CN201711005926.XA CN201711005926A CN108044904A CN 108044904 A CN108044904 A CN 108044904A CN 201711005926 A CN201711005926 A CN 201711005926A CN 108044904 A CN108044904 A CN 108044904A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
- B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention proposes a kind of preparation method of three-in-one light diffusing sheet, three-in-one light diffusing sheet preparation method using the present invention, it must can reduce a large amount of stains or unqualified phenomenon that superheating phenomenon generates in traditional production process to greatest extent, promote the qualification rate of product.Simultaneously the physical property of three-in-one light diffusing sheet can also be caused to reach preferably state.The preparation method of the three-in-one light diffusing sheet of the present invention, includes the following steps：S1 weighs each layer of light diffusing sheet according to formula, and 3~5min is then stirred under homogenizer, each layer of master batch is uniformly mixed；S2 dries 2h~4h so that the moisture evaporation in master batch in the environment of the master batch of each layer after mixing is placed 105 DEG C~110 DEG C；S3 puts into each layer of process dried master batch in single screw rod or twin-screw barrel, then carries out heating treatment, and the temperature in single screw rod or twin-screw is respectively 170 DEG C~245 DEG C, and each layer of master batch is melted and is uniformly mixed；S4 squeezes out the mixture after each layer of melting to extruder die head, is adjusted by the baffle in adjusting so as to fulfill the width and thickness of finished product light diffusing sheet.
Description
Technical field
The present invention relates to light diffusing sheet preparation field, more particularly, to a kind of preparation method of three-in-one light diffusing sheet.
Background technology
Light diffusing sheet is by means chemically or physically, and being expert at using light in track, it is different to run into two refractive index
During medium, the physical phenomenon of refraction, reflection and scattering occurs, by adding inorganic diffusion on the Substrate basis such as PMMA, PS, PP
Agent or the artificial adjustment light of the array of organic light diffusing agent or the micro-feature structure for passing through substrate surface arrangement send out light
Refraction, reflection and the scattering of raw different directions so as to change the conduct route of light, realize that incident light is fully scattered and generate light with this
Learn the effect of diffusion.
Traditional production light diffusing sheet is that PS raw materials and powdery diffusant and other function additives are blended, by same
It is granulated to twin-screw, is then added to single-screw bar extruder according to a certain percentage, then passes through die head and three-roll formation again
Plate.
At present, in order to reduce the usage amount of function additive, while the functional efficiency of light diffusing sheet is promoted, substantially made at present
With three-in-one light diffusing sheet, the three-in-one light diffusing sheet is that interlayer is light diffusion layer, and both sides are functional layer, described
Light diffusion layer in include PS, PMMA either a kind of master batch in PP and one kind or more in organic or inorganic light diffusing agent
Kind, in the functional layer on the both sides comprising a kind of master batch in PS, PMMA or PP and one kind in functional aid or
A variety of, the functional aid includes anti-UV agent, antistatic agent, antioxidant, anti-dust or foaming agent etc..Production at present
Such new light diffusing sheet is to squeeze out three layers of granulation by respective extruder respectively, then by extruder die head,
Each layer has individual extrusion mechanism and outlet in die head, can be independent mutually between so ensuring that three layers, while again can
Ensureing finally at high temperature being capable of three layers of fitting.
Existing technological process seems very perfect, but in fact or existing defects, due to existing three-in-one
In the preparation process of light diffusing sheet, three layers using independent formula, so this three layers each layer ingredient is not quite similar,
Then for so that be most difficult to one layer melted melts granulation completely, so temperature can be adjusted to the melting with being most difficult to one layer of melting
The identical or slightly higher temperature of temperature, to realize three layers of granulation process, due to being granulated in extruder during due to three layers
Temperature control is duplicate, which results in the state that some light diffusing sheet layers are in order at an overheat, due to overheating meeting
So that the physical property of light diffusing sheet declines so that three layers it is compound after the general character of product can not reach most preferably.And due to mistake
Heat also affects the performance being granulated again after light diffusing sheet recycling.
The content of the invention
In order to solve problem above, the present invention proposes a kind of preparation method of three-in-one light diffusing sheet, using the present invention
Three-in-one light diffusing sheet preparation method, must can reduce to greatest extent superheating phenomenon in traditional production process generate it is big
Stain or unqualified phenomenon are measured, promotes the qualification rate of product.Simultaneously the physical property of three-in-one light diffusing sheet can also be caused to reach
To preferably state.
A kind of preparation method of three-in-one light diffusing sheet, includes the following steps：
S1 weighs each layer of light diffusing sheet according to formula, and 3~5min is then stirred under homogenizer,
Each layer of master batch is uniformly mixed；
S2 dries 2h~4h so that in master batch in the environment of the master batch of each layer after mixing is placed DEG C~DEG C
Moisture evaporation；
The each layer of dried master batch of process is put into single screw rod or twin-screw barrel, then heated up by S3
It handles, the temperature in single screw rod or twin-screw is respectively 170 DEG C~250 DEG C, and each layer of master batch is melted and is uniformly mixed；
S4, by each layer melting after mixture squeeze out to extruder die head, by the baffle in adjusting so as to fulfill into
The width and thickness of product light diffusing sheet are adjusted.
Further, the interlayer of three-in-one light diffusing sheet as described above is light diffusion layer, main component PS, PMMA
Either a kind of mixture of the and light diffusing agent in the PP light diffusing agent includes organic light diffusing agent or inorganic light is spread
Agent, organic light diffusing agent are without modified organic silicon particle or modified organic silicon particle, wherein without modification
Organic silicon particle refractive index for 1.40~1.42, the refractive index by modified organic silicon particle can be up to 1.42~
1.52；Inorganic light diffusing agent includes titanium dioxide, barium sulfate etc., and the wherein refractive index of titanium dioxide is 2.55~2.76, sulfuric acid
The refractive index of barium is 1.64~1.65.
Further, the functional layer on the both sides of three-in-one light diffusing sheet as described above, main component PS, PMMA or
A kind of mixture of and functional aid in PP, the functional aid mixture include anti-UV agent, antistatic agent, antioxygen
One or more in agent, anti-dust or foaming agent, and each functional aid can also use one or more.
Further, in step S1 as described above, when each layer of light diffusing sheet is weighed according to formula, if two
The formula of the functional layer on side is identical, then can mix the functional layer on both sides and weigh or individually weigh.
Further, in step S1 as described above, the quality of the functional layer on the both sides of light diffusing sheet is equal, and both sides
The gross mass of functional layer and the mass ratio of intermediate light diffusion layer are 6%~7%：93%~94%.
Further, in the step S2, master batch can be static drying, or dynamic during drying
State is dried, and dynamic drying increases whipping process during drying.
Further, in the step S3, the master batch after the drying in interlayer is put into twin-screw barrel, Ran Houjing
Heating treatment is crossed, it is different according to position of the master batch in twin-screw barrel during heating, it is divided into feeding section, melt zone,
Change section, wherein feeding section is divided into the first warm area and the second warm area, and melt zone is divided into three-temperature-zone, four-temperature region and the 5th warm area,
Homogenizing zone is divided into the 6th warm area and the 7th warm area, and the temperature of first warm area is 170 DEG C~200 DEG C, the temperature of the second warm area
It spends for 200 DEG C~220 DEG C, the temperature of three-temperature-zone is 200 DEG C~230 DEG C, and the temperature of four-temperature region is 210 DEG C~230 DEG C, the
The temperature of five warm areas is 205 DEG C~245 DEG C, and the temperature of the 6th warm area is 210 DEG C~235 DEG C, and the temperature of the 7th warm area is 210 DEG C
~245 DEG C.It is further preferred that if interlayer uses PS as master batch, organic silicon particle is added as light diffusing agent, and organosilicon
The mass ratio of quality and interlayer PS are 96%~99.5%：When 0.5%~4%, the temperature of first warm area is 170 DEG C
~200 DEG C, the temperature of the second warm area is 200 DEG C~215 DEG C, and the temperature of three-temperature-zone is 200 DEG C~220 DEG C, four-temperature region
Temperature is 210 DEG C~220 DEG C, and the temperature of the 5th warm area is 205 DEG C~230 DEG C, and the temperature of the 6th warm area is 210 DEG C~230 DEG C,
The temperature of 7th warm area is 210 DEG C~235 DEG C.
Further, in the step S3, the master batch after the drying of both sides functional layer is put into single screw rod barrel, so
Afterwards by heating treatment, the position during heating according to master batch in single screw rod barrel is different, is divided into feeding section, melting
Section, homogenizing zone, wherein feeding section are the first warm area, and second segment is divided into the second warm area and three-temperature-zone, and homogenizing zone is four-temperature region,
The temperature of first warm area is 170 DEG C~210 DEG C, and the temperature of second warm area is 210 DEG C~225 DEG C, described
The temperature of three-temperature-zone is 215 DEG C~225 DEG C, and the temperature of the four-temperature region is 210 DEG C~230 DEG C.
Further, in the step S3, each layer of masterbatch of three-in-one light diffusing sheet is entering corresponding twin-screw
In barrel or single screw rod barrel, can independent temperature adjustment, can and if the mixture of the functional layer on both sides is consistent
It is granulated so that a single screw rod barrel is used to realize.
Further, in the step S4, if under the functional layer unanimous circumstances on both sides, and pass through same single screw rod
Barrel is granulated, then draws material device by two, and granulation is introduced into two layers up and down of extruder die head；If the function on both sides
Layer is consistent or inconsistent, but is granulated by two single screw rod barrels, then is distinguished each single screw rod barrel
Drawn by one and expected two layers up and down that device is introduced into extruder die head；Intermediate light diffusion layer is made by twin-screw barrel
Grain, the interlayer drawn material device by one and be introduced into extruder die head.
Further, in the step S4, each layer has temperature control, the temperature control on upper strata in extruder die head
For 210 DEG C~225 DEG C, the temperature control in interlayer is 210 DEG C~230 DEG C, and the temperature control of lower floor is 210 DEG C~225 DEG C.
Three-in-one light diffusing sheet preparation method using the present invention carries out stringent control to temperature, can obtain to greatest extent
Reduce a large amount of stains or unqualified phenomenon that superheating phenomenon generates in traditional production process, promote the qualification of product
Rate.Simultaneously the physical property of three-in-one light diffusing sheet can also be caused to reach preferably state.
Specific embodiment
A kind of preparation method of three-in-one light diffusing sheet, includes the following steps：
S1 weighs each layer of light diffusing sheet according to formula, and 3~5min is then stirred under homogenizer,
Each layer of master batch is uniformly mixed；
S2 dries 2h~4h so that female in the environment of the master batch of each layer after mixing is placed 105 DEG C~110 DEG C
Moisture evaporation in grain；
The each layer of dried master batch of process is put into single screw rod or twin-screw barrel, then heated up by S3
It handles, the temperature in single screw rod or twin-screw is respectively 170 DEG C~245 DEG C, and each layer of master batch is melted and is uniformly mixed；
S4, by each layer melting after mixture squeeze out to extruder die head, by the baffle in adjusting so as to fulfill into
The width and thickness of product light diffusing sheet are adjusted.
Further, the interlayer of three-in-one light diffusing sheet as described above is light diffusion layer, main component PS, PMMA
Either a kind of mixture of the and light diffusing agent in the PP light diffusing agent includes organic light diffusing agent or inorganic light is spread
Agent, organic light diffusing agent are without modified organic silicon particle or modified organic silicon particle, wherein without modification
Organic silicon particle refractive index for 1.40~1.42, the refractive index by modified organic silicon particle can be up to 1.42~
1.52；Inorganic light diffusing agent includes titanium dioxide, barium sulfate etc., and the wherein refractive index of titanium dioxide is 2.55~2.76, sulfuric acid
The refractive index of barium is 1.64~1.65.
Further, the functional layer on the both sides of three-in-one light diffusing sheet as described above, main component PS, PMMA or
A kind of mixture of and functional aid in PP, the functional aid mixture include anti-UV agent, antistatic agent, antioxygen
One or more in agent, anti-dust or foaming agent, and each functional aid can also use one or more.
Further, in step S1 as described above, when each layer of light diffusing sheet is weighed according to formula, if two
The formula of the functional layer on side is identical, then can mix the functional layer on both sides and weigh or individually weigh.
Further, in step S1 as described above, the quality of the functional layer on the both sides of light diffusing sheet is equal, and both sides
The gross mass of functional layer and the mass ratio of intermediate light diffusion layer are 6%~7%：93%~94%.
Further, in the step S2, master batch can be static drying, or dynamic during drying
State is dried, and dynamic drying increases whipping process during drying.
Further, in the step S3, the master batch after the drying in interlayer is put into twin-screw barrel, Ran Houjing
Heating treatment is crossed, it is different according to position of the master batch in twin-screw barrel during heating, it is divided into feeding section, melt zone,
Change section, wherein feeding section is divided into the first warm area and the second warm area, and melt zone is divided into three-temperature-zone, four-temperature region and the 5th warm area,
Homogenizing zone is divided into the 6th warm area and the 7th warm area, and the temperature of first warm area is 170 DEG C~200 DEG C, the temperature of the second warm area
It spends for 200 DEG C~220 DEG C, the temperature of three-temperature-zone is 200 DEG C~230 DEG C, and the temperature of four-temperature region is 210 DEG C~230 DEG C, the
The temperature of five warm areas is 205 DEG C~245 DEG C, and the temperature of the 6th warm area is 210 DEG C~235 DEG C, and the temperature of the 7th warm area is 210 DEG C
~245 DEG C.It is further preferred that if interlayer uses PS as master batch, organic silicon particle is added as light diffusing agent, and organosilicon
The mass ratio of quality and interlayer PS are 96%~99.5%：When 0.5%~4%, the temperature of first warm area is 170 DEG C
~200 DEG C, the temperature of the second warm area is 200 DEG C~215 DEG C, and the temperature of three-temperature-zone is 200 DEG C~220 DEG C, four-temperature region
Temperature is 210 DEG C~220 DEG C, and the temperature of the 5th warm area is 205 DEG C~230 DEG C, and the temperature of the 6th warm area is 210 DEG C~230 DEG C,
The temperature of 7th warm area is 210 DEG C~235 DEG C.
Further, in the step S3, the master batch after the drying of both sides functional layer is put into single screw rod barrel, so
Afterwards by heating treatment, the position during heating according to master batch in single screw rod barrel is different, is divided into feeding section, melting
Section, homogenizing zone, wherein feeding section are the first warm area, and second segment is divided into the second warm area and three-temperature-zone, and homogenizing zone is four-temperature region,
The temperature of first warm area is 170 DEG C~210 DEG C, and the temperature of second warm area is 210 DEG C~225 DEG C, described
The temperature of three-temperature-zone is 215 DEG C~225 DEG C, and the temperature of the four-temperature region is 210 DEG C~230 DEG C.
Further, in the step S3, each layer of masterbatch of three-in-one light diffusing sheet is entering corresponding twin-screw
In barrel or single screw rod barrel, can independent temperature adjustment, can and if the mixture of the functional layer on both sides is consistent
It is granulated so that a single screw rod barrel is used to realize.
Further, in the step S4, if under the functional layer unanimous circumstances on both sides, and pass through same single screw rod
Barrel is granulated, then draws material device by two, and granulation is introduced into two layers up and down of extruder die head；If the function on both sides
Layer is consistent or inconsistent, but is granulated by two single screw rod barrels, then is distinguished each single screw rod barrel
Drawn by one and expected two layers up and down that device is introduced into extruder die head；Intermediate light diffusion layer is made by twin-screw barrel
Grain, the interlayer drawn material device by one and be introduced into extruder die head.
Further, in the step S4, each layer has temperature control, the temperature control on upper strata in extruder die head
For 210 DEG C~225 DEG C, the temperature control in interlayer is 210 DEG C~230 DEG C, and the temperature control of lower floor is 210 DEG C~225 DEG C.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of preparation method of three-in-one light diffusing sheet, includes the following steps：
S1 weighs each layer of light diffusing sheet according to formula, and 3~5min is then stirred under homogenizer, will be every
One layer of master batch is uniformly mixed；
S2 dries 2h~4h so that in master batch in the environment of the master batch of each layer after mixing is placed 105 DEG C~110 DEG C
Moisture evaporation；
The each layer of dried master batch of process is put into single screw rod or twin-screw barrel, then carries out heating treatment by S3,
Temperature in single screw rod or twin-screw is respectively 170 DEG C~245 DEG C, and each layer of master batch is melted and is uniformly mixed；
S4 squeezes out the mixture after each layer of melting to extruder die head, by the baffle in adjusting so as to fulfill finished product light
The width and thickness of diffuser plate are adjusted.
2. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：Three-in-one light as described above
The interlayer of diffuser plate is light diffusion layer, a kind of and light diffusing agent mixture in main component PS, PMMA or PP, institute
The light diffusing agent stated includes organic light diffusing agent or inorganic light diffusing agent, and organic light diffusing agent is without modified organosilicon
Particle or modified organic silicon particle, wherein be 1.40~1.42 without the refractive index of modified organic silicon particle, warp
1.42~1.52 can be up to by crossing the refractive index of modified organic silicon particle；Inorganic light diffusing agent includes titanium dioxide, sulfuric acid
The refractive index of barium etc., wherein titanium dioxide is 2.55~2.76, and the refractive index of barium sulfate is 1.64~1.65.
3. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：Three-in-one light as described above
A kind of mixture of and functional aid in the functional layer on the both sides of diffuser plate, main component PS, PMMA or PP, it is described
Functional aid mixture include anti-UV agent, antistatic agent, antioxidant, anti-dust or one kind or more in foaming agent
Kind, and each functional aid can also use one or more.
4. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：It, will in the step S1
It, can be by both sides if the formula of the functional layer on both sides is identical when each layer of light diffusing sheet is weighed according to formula
Functional layer mixing weigh or individually weigh；And the quality of the functional layer on the both sides of light diffusing sheet is equal, the functional layer on both sides
Gross mass and the mass ratio of intermediate light diffusion layer be 6%~7%：93%~94%.
5. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：It is female in the step S2
Grain can be static drying during drying, or dynamic is dried, and dynamic drying increases during drying
Whipping process.
6. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：In the step S3, in
Master batch after the drying of interbed is put into twin-screw barrel, then by heating treatment, is existed during heating according to master batch
Position in twin-screw barrel is different, is divided into feeding section, melt zone, homogenizing zone, wherein feeding section is divided into the first warm area and second
Warm area, melt zone are divided into three-temperature-zone, four-temperature region and the 5th warm area, and homogenizing zone is divided into the 6th warm area and the 7th warm area, described
The first warm area temperature for 170 DEG C~200 DEG C, the temperature of the second warm area is 200 DEG C~220 DEG C, and the temperature of three-temperature-zone is
200 DEG C~230 DEG C, the temperature of four-temperature region is 210 DEG C~230 DEG C, and the temperature of the 5th warm area is 205 DEG C~245 DEG C, the 6th temperature
The temperature in area is 210 DEG C~235 DEG C, and the temperature of the 7th warm area is 210 DEG C~245 DEG C.
7. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：In the step S3, if
Interlayer uses PS as master batch, adds organic silicon particle as light diffusing agent, and the quality of organosilicon and the mass ratio of interlayer PS
For 96%~99.5%：When 0.5%~4%, the temperature of first warm area is 170 DEG C~200 DEG C, the temperature of the second warm area
For 200 DEG C~215 DEG C, the temperature of three-temperature-zone is 200 DEG C~220 DEG C, and the temperature of four-temperature region is 210 DEG C~220 DEG C, the 5th
The temperature of warm area is 205 DEG C~230 DEG C, and the temperature of the 6th warm area is 210 DEG C~230 DEG C, the temperature of the 7th warm area for 210 DEG C~
235℃。
8. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：In the step S3, two
Master batch after the drying of side functional layer is put into single screw rod barrel, then by heating treatment, according to mother during heating
Position of the grain in single screw rod barrel is different, is divided into feeding section, melt zone, homogenizing zone, and wherein feeding section is the first warm area, and second
Section is divided into the second warm area and three-temperature-zone, and homogenizing zone is four-temperature region, and the temperature of first warm area is 170 DEG C~210 DEG C,
The temperature of second warm area is 210 DEG C~225 DEG C, and the temperature of the three-temperature-zone is 215 DEG C~225 DEG C, described
The temperature of four-temperature region is 210 DEG C~230 DEG C.
9. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：In the step S3, three
Unify each layer of masterbatch of light diffusing sheet in corresponding twin-screw barrel or single screw rod barrel is entered, it can separately adjustable temperature
Degree, and if the mixture of the functional layer on both sides is consistent, a single screw rod barrel can be used to realize and be granulated.
10. the preparation method of three-in-one light diffusing sheet as described in claim 1, it is characterised in that：In the step S4, if
It under the functional layer unanimous circumstances on both sides, and is granulated by same single screw rod barrel, then draws material device by two, it will
It is granulated be introduced into extruder die head two layers up and down；If the functional layer on both sides is consistent or inconsistent, but all it is by two
Single screw rod barrel is granulated, then each single screw rod barrel is drawn material device by one respectively is introduced into extruder die head
Upper and lower two layers；Intermediate light diffusion layer is granulated by twin-screw barrel, and drawing material device by one is introduced into extruder die
The interlayer of head.And each layer has temperature control in extruder die head, the temperature control on upper strata is 210 DEG C~225 DEG C, intermediate
The temperature control of layer is 210 DEG C~230 DEG C, and the temperature control of lower floor is 210 DEG C~225 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711005926.XA CN108044904A (en) | 2017-10-25 | 2017-10-25 | A kind of preparation method of three-in-one light diffusing sheet |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108841079A (en) * | 2018-06-12 | 2018-11-20 | 赖慎鹏 | A kind of light diffusing sheet and preparation method thereof |
| CN112829347A (en) * | 2020-12-30 | 2021-05-25 | 江苏恒隆通新材料科技有限公司 | Automatic production process of optical diffusion plate |
| CN113093320A (en) * | 2021-04-22 | 2021-07-09 | 苏州三鑫时代新材料股份有限公司 | Light diffusion plate with high refractive index and synthesis method thereof |
| CN113845738A (en) * | 2021-10-12 | 2021-12-28 | 惠州市笨鸟先飞光学材料有限公司 | Method for manufacturing optical plate with mosquito repelling function |
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| CN103242593A (en) * | 2013-05-15 | 2013-08-14 | 北京化工大学 | Antistatic material, self-cleaning light diffusion plate prepared therefrom, and preparation method of self-cleaning light diffusion plate |
| CN104610677A (en) * | 2015-02-04 | 2015-05-13 | 李满林 | Production method of PS diffusion plate and PS diffusion plate |
| CN105034309A (en) * | 2015-08-27 | 2015-11-11 | 常州市联丰光电科技有限公司 | Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof |
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| JP2002003612A (en) * | 2000-06-21 | 2002-01-09 | Asahi Kasei Corp | Method of manufacturing polycarbonate-based flame retardant resin composition |
| CN103242593A (en) * | 2013-05-15 | 2013-08-14 | 北京化工大学 | Antistatic material, self-cleaning light diffusion plate prepared therefrom, and preparation method of self-cleaning light diffusion plate |
| CN104610677A (en) * | 2015-02-04 | 2015-05-13 | 李满林 | Production method of PS diffusion plate and PS diffusion plate |
| CN105034309A (en) * | 2015-08-27 | 2015-11-11 | 常州市联丰光电科技有限公司 | Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108841079A (en) * | 2018-06-12 | 2018-11-20 | 赖慎鹏 | A kind of light diffusing sheet and preparation method thereof |
| CN112829347A (en) * | 2020-12-30 | 2021-05-25 | 江苏恒隆通新材料科技有限公司 | Automatic production process of optical diffusion plate |
| CN113093320A (en) * | 2021-04-22 | 2021-07-09 | 苏州三鑫时代新材料股份有限公司 | Light diffusion plate with high refractive index and synthesis method thereof |
| WO2022222169A1 (en) * | 2021-04-22 | 2022-10-27 | 苏州三鑫时代新材料股份有限公司 | Light diffusion plate having high refractive index and synthesis method therefor |
| CN113845738A (en) * | 2021-10-12 | 2021-12-28 | 惠州市笨鸟先飞光学材料有限公司 | Method for manufacturing optical plate with mosquito repelling function |
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