CN114872397B - PET film and glass fiber external cold pressing lamination mobile phone rear cover and preparation method thereof - Google Patents

PET film and glass fiber external cold pressing lamination mobile phone rear cover and preparation method thereof Download PDF

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Publication number
CN114872397B
CN114872397B CN202210479593.9A CN202210479593A CN114872397B CN 114872397 B CN114872397 B CN 114872397B CN 202210479593 A CN202210479593 A CN 202210479593A CN 114872397 B CN114872397 B CN 114872397B
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glass fiber
pet
layer
film
cold pressing
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CN114872397A (en
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陈栋栋
顾正
邵宜健
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Zhejiang Trillion Game Technology Co ltd
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Zhejiang Trillion Game Technology Co ltd
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Classifications

    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/002—Joining methods not otherwise provided for
    • B29C65/004—Cold joining
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/0279—Improving the user comfort or ergonomics
    • H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a rear cover of a mobile phone, which is formed by laminating a PET film and a glass fiber die in an external cold pressing mode, and a preparation method of the rear cover.

Description

PET film and glass fiber external cold pressing lamination mobile phone rear cover and preparation method thereof
[ field of technology ]
The invention relates to a PET film and glass fiber external cold pressing lamination mobile phone rear cover and a preparation method thereof, belonging to the technical field of mobile phone surface decoration of electronic products.
[ background Art ]
With the development of social technology, electronic products are continuously replaced with new ones, people rely on and like the electronic products to achieve the step of being free from the influence of the electronic products, and meanwhile, the mobile phone rear cover with various appearance effects and quality, handfeel (reducing thinning) of the electronic products is also more and more favored by people. However, at present, composite boards (PC/PMMA), glass and other materials are commonly used, and the composite boards have the characteristics of high quality, light weight, high performance and the like. The glass fiber has the characteristics that the glass fiber is mainly used as an electric insulating material, has high tensile strength and high elastic coefficient, is anti-corrosion, dampproof, heat-insulating, sound-insulating and shock-absorbing material, and is not suitable for being used as a mobile phone material.
Glass fiber is used as a mobile phone material, and is mainly adhered at present, and has no colorful effect of the composite board with more textures, so that the color and the pattern are too single, and the aesthetic effect of people cannot be met. Then how to decorate the surface of the glass fiber, and can embody different texture textures and dazzle color effects, which is a difficult technical problem.
[ invention ]
The invention aims to solve the problems in the prior art, and provides a PET film and glass fiber outer cold pressing lamination mobile phone rear cover and a preparation method thereof, which can embody different texture textures and colorful effects and satisfy the aesthetic sense of people.
In order to achieve the aim, the invention provides a rear cover of a mobile phone, which is formed by laminating a PET film and a glass fiber die in a cold pressing mode, and comprises a glass fiber template, a connecting layer and a PET film, wherein the glass fiber template, the connecting layer and the PET film are sequentially laminated from bottom to top, and a texture layer is arranged on the PET film.
Preferably, a coating layer is arranged between the connecting layer and the PET film.
Preferably, a bottom cover layer is arranged between the coating layer and the connecting layer.
Preferably, the connection layer is a glue layer or a glue film layer.
Preferably, the texture layer includes an outer texture layer provided on an upper surface of the PET film.
Preferably, the texture layer further comprises an inner texture layer provided on the lower surface of the PET film.
A preparation method for a rear cover of a mobile phone by cold pressing and laminating a PET film and a glass fiber outside a mold comprises the following steps:
a) Molding a glass fiber template: milling the shape of the glass fiber prepreg according to a 3D structure diagram, then laminating, positioning each sheet of glass fiber prepreg by perforation, and then performing hot press molding to obtain a 3D glass fiber template, wherein the lamination number is as follows: 3-5 layers, the hot press forming temperature is: the hot press molding time is 120-150 ℃ and is as follows: 5-8 min;
b) PET membrane decoration: firstly, making an outer texture layer of the PET film, coating a bearing film on the outer texture layer, then, transferring an inner texture layer which needs texture on the lower surface of the PET film, coating a film coating layer which needs texture on the inner texture layer according to visual effect, and finally, coating a bottom layer on the lower surface of the film coating layer to obtain a PET decorative film;
c) Cold pressing and laminating: adopting a first cold pressing and laminating method or a second cold pressing and laminating method, wherein the first cold pressing and laminating method is as follows: firstly, cutting a PET decorative membrane into a proper size, putting the PET decorative membrane and a 3D glass fiber template into a PE bag or a TPU bag together for vacuum plastic packaging, and then putting the PE or TPU bag into a water press for pre-activation at the temperature of: the temperature is 60-80 ℃ and the time is as follows: 3-5 min, the water pressure is: 20 Mpa-40 Mpa, so that the surface is sufficiently smooth without bubbles; then, the PET decorative membrane is preformed and a 3D glass fiber template attached with an adhesive film is stacked and positioned, and the PET decorative membrane and the 3D glass fiber template are put into a PE bag or a TPU bag together for vacuum plastic package, and then put into a hydraulic press, wherein the hydraulic pressure is as follows: 20 Mpa-40 Mpa, the temperature is: 80-90 ℃ and the time is as follows: 17-23 min, fully activating the adhesive film, taking out the product and milling the product into a finished product;
and a cold pressing and laminating method II: firstly, milling out the 3D glass fiber template according to the single-side expansion of 1.5-2.0 mm of the finished product size to obtain the 3D glass fiber template to be pressed; carrying out laser carving cutting treatment on the PET decorative membrane according to the single side of the finished product size by 2.0-3.0 mm to obtain a PET decorative membrane to be pressed, coating hot melt glue on the bonding surface of the PET decorative membrane to be pressed, pasting the PET decorative membrane to be pressed coated with the hot melt glue on the upper surface of a 3D glass fiber template to be pressed, positioning, pressing on the surface by using a 3D profiling mold, positioning, finally filling a TPU bag or a PE bag for vacuumizing, and then putting the PET decorative membrane into a hydraulic press, wherein the hydraulic pressure is as follows: 20 Mpa-40 Mpa, the temperature is: 60-80 ℃ and the time is as follows: and (5) taking out the product after the glue is solidified for 10-15 min, and milling the product into a finished product.
Preferably, the cutting size of the PET decorative film in the first cold press lamination method is 2-3 mm which is externally spread on one side according to the size of the 3D glass fiber template.
Preferably, the number of laminations in the a) glass fiber template forming step is: 4 layers, the hot press forming temperature is: the hot press molding time is 130 ℃:7min.
Preferably, the thickness of the hot melt glue coating is as follows: 15-20 um, and a 10-20 um wire rod coater is adopted.
The invention has the beneficial effects that: according to the invention, the glass fiber template, the connecting layer and the PET film are sequentially laminated from bottom to top, and the texture layer is arranged on the PET film, so that compared with the prior art, different texture textures and colorful effects can be reflected, and the aesthetic effect of people is met.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a structure of a rear cover of a mobile phone, which is formed by cold pressing and laminating a PET film and a glass fiber die.
In the figure: 1-glass fiber template, 2-connection layer, 3-cover bottom layer, 4-PET film, 5-texture layer, 6-coating layer, 51-outer texture layer, 52-inner texture layer.
[ detailed description ] of the invention
Referring to fig. 1, the invention relates to a rear cover of a mobile phone, which is formed by cold pressing and laminating a PET film and a glass fiber die, and comprises a glass fiber die plate 1, a connecting layer 2 and a PET film 4, wherein the glass fiber die plate 1, the connecting layer 2 and the PET film 4 are sequentially arranged in a lamination manner from bottom to top, a texture layer 5 is arranged on the PET film 4, the glass fiber die plate 1 is a 3D glass fiber die plate, a coating layer 6 is arranged between the connecting layer 2 and the PET film 4, a cover bottom layer 3 is arranged between the coating layer 6 and the connecting layer 2, the connecting layer 2 is a glue layer or a glue film layer, the texture layer 5 comprises an outer texture layer 51 arranged on the upper surface of the PET film 4, and the texture layer 5 also comprises an inner texture layer 52 arranged on the lower surface of the PET film 4.
Example 1
A preparation method for a rear cover of a mobile phone by cold pressing and laminating a PET film and a glass fiber outside a mold comprises the following steps: a) Molding a glass fiber template: milling the shape of the glass fiber prepreg according to a 3D structure diagram, then laminating, positioning each sheet of glass fiber prepreg by perforation, and then performing hot press molding to obtain a 3D glass fiber template, wherein the lamination number is as follows: 4 layers, the hot press forming temperature is: the hot press molding time is 130 ℃:7min; the cutting size of the PET decorative film is 2.5mm which is externally spread on one side according to the size of the 3D glass fiber template;
b) PET membrane decoration: firstly, an outer texture layer 51 and a 0.188mm bearing film are coated on a 50-um PET film 4, the effect is to protect the process, then an inner texture layer 52 with required textures is transferred on the lower surface of the PET film, then a coating layer 6 with required textures is coated on the inner texture layer 52 according to the visual effect, the coating layer 6 is an optical film or indium tin, and finally, a three-layer bottom layer 3 is coated on the lower surface of the coating layer 6, so that the PET decorative film is obtained;
c) Cold pressing and laminating: firstly, cutting a PET decorative membrane into a proper size, putting the PET decorative membrane and a 3D glass fiber template into a PE bag or a TPU bag together for vacuum plastic packaging, and then putting the PE or TPU bag into a water press for pre-activation at the temperature of: 70 ℃ and the time is as follows: 4min, the water pressure is: 30Mpa, the surface is sufficiently smooth, and no bubbles exist; then, the PET decorative membrane is preformed and a 3D glass fiber template attached with an adhesive film is stacked and positioned, and the PET decorative membrane and the 3D glass fiber template are put into a PE bag or a TPU bag together for vacuum plastic package, and then put into a hydraulic press, wherein the hydraulic pressure is as follows: 30Mpa, the temperature is: 85 ℃ and the time is as follows: and (5) allowing the adhesive film to be fully activated for 20min, taking out the product and milling the product into a finished product.
Example 2
A preparation method for a rear cover of a mobile phone by cold pressing and laminating a PET film and a glass fiber outside a mold comprises the following steps: a) Molding a glass fiber template: milling the shape of the glass fiber prepreg according to a 3D structure diagram, then laminating, positioning each sheet of glass fiber prepreg by perforation, and then performing hot press molding to obtain a 3D glass fiber template, wherein the lamination number is as follows: 4 layers, the hot press forming temperature is: the hot press molding time is 130 ℃:7min;
b) PET membrane decoration: firstly, an outer texture layer 51 and a 0.188mm bearing film are coated on a 50-um PET film 4, the effect is to protect the process, then an inner texture layer 52 with required textures is transferred on the lower surface of the PET film, then a coating layer 6 with required textures is coated on the inner texture layer 52 according to the visual effect, the coating layer 6 is an optical film or indium tin, and finally, a three-layer bottom layer 3 is coated on the lower surface of the coating layer 6, so that the PET decorative film is obtained;
c) Cold pressing and laminating: firstly, milling out the 3D glass fiber template according to the single-side expansion of 1.7mm of the finished product size to obtain the 3D glass fiber template to be pressed; carrying out laser engraving cutting treatment on the PET decorative membrane according to the single side of the finished product size by 2.5mm, obtaining a PET decorative membrane to be pressed, coating hot melt glue on the bonding surface of the PET decorative membrane to be pressed, pasting the PET decorative membrane to be pressed coated with the hot melt glue on the upper surface of a 3D glass fiber template to be pressed, positioning, pressing on the surface by using a 3D profiling die, positioning, finally vacuumizing by filling a TPU bag or a PE bag, and then putting into a hydraulic press, wherein the water pressure is as follows: 30Mpa, the temperature is: 70 ℃ and the time is as follows: and (3) taking out the product after the glue is solidified and milling the product into a finished product, wherein the thickness of the coated hot melt glue is as follows: 16um, and a 10-20 um wire rod coater is adopted.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims (7)

1. PET membrane and fine external cold pressing laminating cell-phone back lid of glass, its characterized in that: including glass fiber template (1), tie layer (2) and PET diaphragm (4), glass fiber template (1), tie layer (2) and PET diaphragm (4) are from down to last lamination setting in proper order, be equipped with texture layer (5) on PET diaphragm (4), texture layer (5) are including establishing outer texture layer (51) on the upper surface of PET diaphragm (4), texture layer (5) are still including establishing interior texture layer (52) on the lower surface of PET diaphragm (4).
2. The rear cover of a mobile phone, which is formed by cold pressing and laminating a PET film and a glass fiber outside a mold, is characterized in that: a coating layer (6) is arranged between the connecting layer (2) and the PET membrane (4).
3. The rear cover of a mobile phone, which is formed by cold pressing and laminating a PET film and a glass fiber outside a mold, is characterized in that: a cover bottom layer (3) is arranged between the coating layer (6) and the connecting layer (2).
4. The rear cover of a mobile phone, which is formed by cold pressing and laminating a PET film and a glass fiber outside a mold, is characterized in that: the connecting layer (2) is a glue layer or a glue film layer.
5. A preparation method for a rear cover of a mobile phone by cold pressing and laminating a PET film and a glass fiber outside a mold is characterized by comprising the following steps: the method comprises the following steps:
a) Molding a glass fiber template: milling the shape of the glass fiber prepreg according to a 3D structure diagram, then laminating, positioning each sheet of glass fiber prepreg by perforation, and then performing hot press molding to obtain a 3D glass fiber template, wherein the lamination number is as follows: 3-5 layers, wherein the hot press forming temperature is as follows: the hot press molding time is 120-150 ℃, and the hot press molding time is as follows: 5-8 min;
b) PET membrane decoration: firstly, preparing an outer texture layer (51) of the PET film (4) and coating a bearing film, then, transferring an inner texture layer (52) with a required texture on the lower surface of the PET film, then, coating a required coating layer (6) on the inner texture layer (52) according to a visual effect, and finally, coating a bottom layer (3) on the lower surface of the coating layer (6) to obtain the PET decorative film;
c) Cold pressing and laminating: adopting a first cold pressing and laminating method or a second cold pressing and laminating method, wherein the first cold pressing and laminating method is as follows: firstly, cutting a PET decorative membrane into a proper size, putting the PET decorative membrane and a 3D glass fiber template into a PE bag or a TPU bag together for vacuum plastic packaging, and then putting the PE or TPU bag into a water press for pre-activation at the temperature of: the temperature is 60-80 ℃ and the time is as follows: 3-5 min, the water pressure is: 20mpa to 40mpa, so that the surface is sufficiently smooth and free of bubbles; then, the PET decorative membrane is preformed and a 3D glass fiber template attached with an adhesive film is stacked and positioned, and the PET decorative membrane and the 3D glass fiber template are put into a PE bag or a TPU bag together for vacuum plastic package, and then put into a hydraulic press, wherein the hydraulic pressure is as follows: 20mpa to 40mpa, the temperature is: 80-90 ℃ and the time is as follows: 17-23 min, fully activating the adhesive film, taking out the product and milling the product;
and a cold pressing and laminating method II: firstly, milling out the 3D glass fiber template according to the single-side expansion of the finished product size by 1.5-2.0 mm to obtain the 3D glass fiber template to be pressed; carrying out laser carving cutting treatment on the PET decorative film according to single side expansion of 2.0-3.0 mm of the finished product size to obtain a PET decorative film to be pressed, coating hot melt glue on the bonding surface of the PET decorative film to be pressed, pasting the PET decorative film to be pressed coated with the hot melt glue on the upper surface of a 3D glass fiber template to be pressed, positioning, pressing on the surface by using a 3D profiling mold, positioning, finally filling a TPU bag or a PE bag for vacuumizing, and then putting the PET decorative film into a hydraulic press, wherein the hydraulic pressure is as follows: 20mpa to 40mpa, the temperature is: 60-80 ℃ and the time is as follows: taking out the product after the glue is solidified for 10-15 min, and milling the product into a finished product;
the thickness of the hot melt glue coating is as follows: 15-20 um, and adopting a 10-20 um wire rod coater.
6. The method for preparing the rear cover of the mobile phone by cold pressing and laminating the PET film and the glass fiber outside the mold as claimed in claim 5, which is characterized in that: the cutting size of the PET decorative membrane in the first cold pressing and attaching method is 2-3 mm which is outwards expanded on one side according to the size of the 3D glass fiber template.
7. The method for preparing the rear cover of the mobile phone by cold pressing and laminating the PET film and the glass fiber outside the mold as claimed in claim 5, which is characterized in that: the number of laminations in the a) glass fiber template forming step is: 4 layers, the hot press forming temperature is: the hot press molding time is 130 ℃:7min.
CN202210479593.9A 2022-05-05 2022-05-05 PET film and glass fiber external cold pressing lamination mobile phone rear cover and preparation method thereof Active CN114872397B (en)

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CN211308086U (en) * 2019-09-29 2020-08-21 伯恩创盛技术研发(惠州)有限公司 Novel glass decorative membrane
CN113878952A (en) * 2021-09-22 2022-01-04 Oppo广东移动通信有限公司 Electronic equipment, shell and manufacturing method thereof

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Publication number Priority date Publication date Assignee Title
JP2015044325A (en) * 2013-08-27 2015-03-12 王子ホールディングス株式会社 Decorative molded body and method for producing decorative molded body
CN107672367A (en) * 2016-08-01 2018-02-09 东莞市仲辰光电科技有限公司 PET is bonded glass-fiber-plate hot bending process
CN108347496A (en) * 2017-01-24 2018-07-31 北京小米移动软件有限公司 Shell and preparation method thereof
CN110868819A (en) * 2018-08-28 2020-03-06 北京小米移动软件有限公司 Preparation method of shell, shell and electronic equipment
CN211308086U (en) * 2019-09-29 2020-08-21 伯恩创盛技术研发(惠州)有限公司 Novel glass decorative membrane
CN113878952A (en) * 2021-09-22 2022-01-04 Oppo广东移动通信有限公司 Electronic equipment, shell and manufacturing method thereof

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