CN111421938A - Colorful film for 5G mobile phone cover plate and preparation process thereof - Google Patents
Colorful film for 5G mobile phone cover plate and preparation process thereof Download PDFInfo
- Publication number
- CN111421938A CN111421938A CN202010179802.9A CN202010179802A CN111421938A CN 111421938 A CN111421938 A CN 111421938A CN 202010179802 A CN202010179802 A CN 202010179802A CN 111421938 A CN111421938 A CN 111421938A
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- layer
- polycarbonate
- polymethyl methacrylate
- cover plate
- extrusion
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- 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
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
-
- 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
- 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
- B32B7/02—Physical, chemical or physicochemical properties
- B32B7/023—Optical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
- B29K2995/002—Coloured
- B29K2995/0021—Multi-coloured
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/404—Multi-coloured
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
Abstract
The invention relates to a colorful film for a 5G mobile phone cover plate, which comprises a polycarbonate layer and a polymethyl methacrylate layer; the polymethyl methacrylate layer is arranged on the upper part of the polycarbonate layer; the polycarbonate layer is distributed in a plurality of layers; the total layer thickness of the polymethyl methacrylate layer is 30-60 micrometers; the total layer thickness of the polycarbonate layer is 125-1000 microns, and the preparation process of the colorful film for the 5G mobile phone cover plate comprises the following steps: (1) fully mixing two or more than two polycarbonates with different refractive indexes; (2) uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion discharge port of a supply die head; (3) uniformly extruding the polymethyl methacrylate from a single-layer co-extrusion discharge port of a supply die head; (4) and (3) mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), performing three-roll calendering molding, and then performing film coating treatment.
Description
Technical Field
The invention relates to a colorful film, in particular to a colorful film for a 5G mobile phone and a preparation process thereof.
Background
The traditional mobile phone cover plate uses a metal cover plate or a glass cover plate, the metal cover plate shields part of mobile phone signals, and the glass cover plate is fragile, complex in processing technology and high in cost.
The 5G mobile phone cover plate needs materials with good environmental protection and weak signal shielding; the polycarbonate film has the characteristics of stable size, ultraviolet light resistance, excellent toughness, high strength, difficult tearing and damage, easy adhesion, easy printing and good formability; meanwhile, the polymethyl methacrylate has the characteristics of good light transmission, high hardness, good formability and easiness in co-extrusion forming with polycarbonate.
Therefore, a film capable of compounding polycarbonate and polymethyl methacrylate is urgently needed to be designed, so that the problems that the processing of the 5G mobile phone cover plate is complex, the color is single, and the effect of bright color can be realized through retreatment such as printing, spraying and the like are met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the colorful film for the 5G mobile phone cover plate, which has the advantages of simple processing, various colors and capability of realizing the effect of bright colors without retreatment such as printing, spraying and the like, and the preparation process thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: a colorful film for a 5G mobile phone cover plate comprises a polycarbonate layer and a polymethyl methacrylate layer; the polymethyl methacrylate layer is arranged on the upper part of the polycarbonate layer; the polycarbonate layers are distributed in a multilayer manner; the total layer thickness of the polymethyl methacrylate layer is 30-60 micrometers; the total layer thickness of the polycarbonate layer is 125-1000 microns.
Furthermore, the number of the multilayer polycarbonate layers is 200-1000.
Further, the multilayer polycarbonate layer is formed by co-extrusion through a co-extrusion multilayer die head.
Further, the polycarbonate and the polymethyl methacrylate are co-extruded and molded by adopting a composite extrusion process.
Further, the polymethyl methacrylate layer contains an ultraviolet resistant additive.
Further, the polycarbonate mixture is thoroughly mixed with polycarbonates of different refractive indices before the co-extrusion of the plurality of polycarbonate layers.
Furthermore, the multi-layer polycarbonate co-extrusion die head is a micron-sized co-extrusion die head, and no gap exists between co-extrusion layers.
A preparation process of a colorful film for a 5G mobile phone cover plate comprises the following steps:
① mixing two or more polycarbonates with different refractive indexes, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the colorful film for the 5G mobile phone cover plate and the preparation process thereof, the polycarbonates with different refractive indexes are mixed, the types of the polycarbonates can be two or more, so that the possibility of more colors is provided, the colors of all layers are different after the mixed polycarbonates are uniformly extruded from a multi-layer co-extrusion port of a supply die head, and the film formed by extrusion of the mixed polycarbonates and a polymethyl methacrylate layer can realize the effect of bright colors without retreatment such as printing, spraying and the like.
Drawings
The technical scheme of the invention is further explained by combining the accompanying drawings as follows:
FIG. 1 is a schematic structural diagram of a colorful film in the present invention;
wherein: 1. a polymethyl methacrylate layer; 2. a plurality of polycarbonate layers.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Referring to fig. 1, the colorful film for the 5G mobile phone cover plate includes a polycarbonate layer 1 and a polymethyl methacrylate layer 2; the polymethyl methacrylate layer 1 is arranged on the upper part of the polycarbonate layer 2; the polycarbonate layer 2 is distributed in a plurality of layers, and the number of the polycarbonate layers is 200-1000; the total layer thickness of the polymethyl methacrylate layer 1 is 30-60 micrometers; the total layer thickness of the polycarbonate layer 2 is 125-1000 microns.
As a further preferred embodiment, the multilayer polycarbonate layer is co-extruded by a co-extrusion multilayer die, so that more color types can be formed.
As a further preferred embodiment, the polycarbonate and the polymethyl methacrylate are co-extruded by a composite extrusion process.
In a further preferred embodiment, the polymethyl methacrylate layer contains an anti-uv additive to improve its anti-uv ability.
As a further preferred embodiment, the polycarbonate mixture is intimately mixed with polycarbonates of different refractive indices prior to coextrusion of the multiple polycarbonate layers.
As a further preferred embodiment, the multilayer polycarbonate co-extrusion die head is a micron-scale co-extrusion die head, and no gap exists between co-extrusion layers.
In addition, the invention also discloses a preparation process of the colorful film for the 5G mobile phone cover plate,
the method comprises the following steps:
① mixing two or more polycarbonates with different refractive indexes, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
The film laminating treatment is adopted to protect the formed colorful film and the colorful film is torn when the colorful film is used.
The invention adopts polycarbonates with different refractive indexes for mixing, and the types of the polycarbonates can be two or more, so that more colors are possible, and the colors of the layers are different after the mixed polycarbonates are uniformly extruded from the multi-layer co-extrusion opening of the feeding die head, thereby generating infinite possible combinations of colors.
The first embodiment is as follows:
the colorful film for the 5G mobile phone cover plate in the embodiment comprises a polycarbonate layer 1 and a polymethyl methacrylate layer 2; the polymethyl methacrylate layer 1 is arranged on the upper part of the polycarbonate layer 2; the number of the 2 polycarbonate layers is 200; the total layer thickness of the polymethyl methacrylate layer 1 is 30 micrometers; the polycarbonate layer 2 had a total layer thickness of 125 μm.
A preparation process of a colorful film for a 5G mobile phone cover plate comprises the following steps:
① mixing two polycarbonates with refractive index of 1.5 and refractive index of 1.8, stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
Example two:
the colorful film for the 5G mobile phone cover plate comprises a polycarbonate layer 1 and a polymethyl methacrylate layer 2; the polymethyl methacrylate layer 1 is arranged on the upper part of the polycarbonate layer 2; the number of the polycarbonate layers is 1000; the total layer thickness of the polymethyl methacrylate layer 1 is 60 micrometers; the polycarbonate layer 2 has a total layer thickness of 1000 μm.
A preparation process of a colorful film for a 5G mobile phone cover plate comprises the following steps:
① mixing the three polycarbonates with refractive indexes of 1.5, 1.8 and 1.9, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
Example three:
the colorful film for the 5G mobile phone cover plate comprises a polycarbonate layer 1 and a polymethyl methacrylate layer 2; the polymethyl methacrylate layer 1 is arranged on the upper part of the polycarbonate layer 2; the number of the polycarbonate layers is 600; the total layer thickness of the polymethyl methacrylate layer 1 is 50 micrometers; the polycarbonate layer 2 had a total layer thickness of 500 μm.
① mixing the four polycarbonates with refractive indexes of 1.2, 1.4, 1.7 and 1.8, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
Example four:
the colorful film for the 5G mobile phone cover plate comprises a polycarbonate layer 1 and a polymethyl methacrylate layer 2; the polymethyl methacrylate layer 1 is arranged on the upper part of the polycarbonate layer 2; the number of the polycarbonate layers is 500; the total layer thickness of the polymethyl methacrylate layer 1 is 55 micrometers; the polycarbonate layer 2 had a total layer thickness of 800 μm.
① mixing the four polycarbonates with refractive indexes of 1.2, 1.4, 1.6 and 1.7, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
Example five:
the colorful film for the 5G mobile phone cover plate comprises a polycarbonate layer 1 and a polymethyl methacrylate layer 2; the polymethyl methacrylate layer 1 is arranged on the upper part of the polycarbonate layer 2; the number of the polycarbonate layers is 600; the total layer thickness of the polymethyl methacrylate layer 1 is 36 micrometers; the polycarbonate layer 2 had a total layer thickness of 380 μm.
① mixing the five polycarbonates with refractive indexes of 1.2, 1.4, 1.5, 1.7 and 1.8, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a 5G cell-phone apron is with dazzling various membrane which characterized in that: comprises a polycarbonate layer and a polymethyl methacrylate layer; the polymethyl methacrylate layer is arranged on the upper part of the polycarbonate layer; the polycarbonate layers are distributed in a multilayer manner; the total layer thickness of the polymethyl methacrylate layer is 30-60 micrometers; the total layer thickness of the polycarbonate layer is 125-1000 microns.
2. The colorful film for the 5G mobile phone cover plate and the preparation process thereof according to claim 1 are characterized in that: the number of layers of the polycarbonate layers is 200-1000.
3. The colorful film for the 5G mobile phone cover plate and the preparation process thereof according to claim 1 are characterized in that: the multi-layer polycarbonate layer is formed by co-extrusion through a co-extrusion multi-layer die head.
4. The colorful film for the 5G mobile phone cover plate and the preparation process thereof according to claim 1 are characterized in that: the polycarbonate and the polymethyl methacrylate are co-extruded and molded by adopting a composite extrusion process.
5. The colorful film for the 5G mobile phone cover plate and the preparation process thereof according to claim 1 are characterized in that: the polymethyl methacrylate layer contains an ultraviolet resistant additive.
6. The colorful film for the 5G mobile phone cover plate and the preparation process thereof according to claim 1 are characterized in that: the polycarbonate blend is intimately mixed with polycarbonates of different refractive indices prior to co-extrusion of the multiple polycarbonate layers.
7. The colorful film for the 5G mobile phone cover plate and the preparation process thereof according to claim 1 are characterized in that: the multi-layer polycarbonate co-extrusion die head is a micron-sized co-extrusion die head, and no gap exists between co-extrusion layers.
8. The preparation process of the colorful film for the 5G mobile phone cover plate, according to claim 1, is characterized by comprising the following steps:
① mixing two or more polycarbonates with different refractive indexes, and stirring;
②, uniformly extruding the polycarbonate mixture in the step (1) from a multi-layer co-extrusion outlet of a supply die head;
③ the polymethyl methacrylate is evenly extruded from a single-layer co-extrusion discharge port of the supply die head;
④ mixing the polycarbonate mixture extruded from the step (2) and the polymethyl methacrylate extruded from the step (3), rolling and molding by three rolls, and then coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010179802.9A CN111421938A (en) | 2020-03-16 | 2020-03-16 | Colorful film for 5G mobile phone cover plate and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010179802.9A CN111421938A (en) | 2020-03-16 | 2020-03-16 | Colorful film for 5G mobile phone cover plate and preparation process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111421938A true CN111421938A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010179802.9A Pending CN111421938A (en) | 2020-03-16 | 2020-03-16 | Colorful film for 5G mobile phone cover plate and preparation process thereof |
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Citations (8)
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| CN1777833A (en) * | 2003-06-04 | 2006-05-24 | 日本聚酯股份有限公司 | Light diffusing plate for liquid crystal display and polycarbonate resin composition for light diffusing plate for liquid crystal display |
| CN1864971A (en) * | 2006-06-22 | 2006-11-22 | 上海交通大学 | Pearlylustre resin production method |
| CN105705332A (en) * | 2013-10-31 | 2016-06-22 | 乐金华奥斯有限公司 | High hardness multi-layer sheet |
| CN105856766A (en) * | 2016-04-18 | 2016-08-17 | 广东欧珀移动通信有限公司 | Cover plate, method for preparing cover plate, electronic equipment screen and electronic equipment |
| CN106707394A (en) * | 2015-11-17 | 2017-05-24 | 宁波长阳科技股份有限公司 | Multilayer composite bright enhancement film and manufacturing method thereof |
| JP2018052029A (en) * | 2016-09-30 | 2018-04-05 | マツダ株式会社 | Pearly resin molded article and manufacturing method thereof |
| CN109111713A (en) * | 2018-07-20 | 2019-01-01 | 安徽江淮汽车集团股份有限公司 | A kind of PC-PMMA composite material and preparation method and application |
| CN208386617U (en) * | 2018-05-15 | 2019-01-15 | Oppo广东移动通信有限公司 | Plate, cover sheet, screen, shell, electronic equipment |
-
2020
- 2020-03-16 CN CN202010179802.9A patent/CN111421938A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1777833A (en) * | 2003-06-04 | 2006-05-24 | 日本聚酯股份有限公司 | Light diffusing plate for liquid crystal display and polycarbonate resin composition for light diffusing plate for liquid crystal display |
| CN1864971A (en) * | 2006-06-22 | 2006-11-22 | 上海交通大学 | Pearlylustre resin production method |
| CN105705332A (en) * | 2013-10-31 | 2016-06-22 | 乐金华奥斯有限公司 | High hardness multi-layer sheet |
| CN106707394A (en) * | 2015-11-17 | 2017-05-24 | 宁波长阳科技股份有限公司 | Multilayer composite bright enhancement film and manufacturing method thereof |
| CN105856766A (en) * | 2016-04-18 | 2016-08-17 | 广东欧珀移动通信有限公司 | Cover plate, method for preparing cover plate, electronic equipment screen and electronic equipment |
| JP2018052029A (en) * | 2016-09-30 | 2018-04-05 | マツダ株式会社 | Pearly resin molded article and manufacturing method thereof |
| CN208386617U (en) * | 2018-05-15 | 2019-01-15 | Oppo广东移动通信有限公司 | Plate, cover sheet, screen, shell, electronic equipment |
| CN109111713A (en) * | 2018-07-20 | 2019-01-01 | 安徽江淮汽车集团股份有限公司 | A kind of PC-PMMA composite material and preparation method and application |
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Application publication date: 20200717 |
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| RJ01 | Rejection of invention patent application after publication |