CN109747105A - Shell and preparation method thereof and electronic product - Google Patents

Shell and preparation method thereof and electronic product Download PDF

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Publication number
CN109747105A
CN109747105A CN201711064013.5A CN201711064013A CN109747105A CN 109747105 A CN109747105 A CN 109747105A CN 201711064013 A CN201711064013 A CN 201711064013A CN 109747105 A CN109747105 A CN 109747105A
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CN
China
Prior art keywords
layer
shell
ink
glass
metal base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711064013.5A
Other languages
Chinese (zh)
Inventor
王海霞
马兰
任鹏
孙剑
陈梁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to CN201711064013.5A priority Critical patent/CN109747105A/en
Priority to PCT/CN2018/112471 priority patent/WO2019085866A1/en
Priority to TW107138426A priority patent/TW201918374A/en
Publication of CN109747105A publication Critical patent/CN109747105A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16Making multilayered or multicoloured articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/06Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The present invention relates to technical field of electronic products, disclose a kind of shell and preparation method thereof and electronic product, the shell includes glass cover-plate, plastic frame body and metal base frame, and the glass cover-plate, plastic frame body and metal base frame are successively combined without step;Composite coating is formed on one side surface of the glass cover-plate, the composite coating successively includes thermal insulation layer, optional surface decoration layer, PET film, explosion-proof layer and protective layer by the glass cover plate surfaces outward direction.In shell of the invention glass cover-plate with it is seamless between metal base frame, combined without step, binding force between glass and metal base is high, broken screen is nearly low, waterproof ability is strong.And method of the invention can form surface texture appearance effect abundant convenient for shell.

Description

Shell and preparation method thereof and electronic product
Technical field
The present invention relates to technical field of electronic products, and in particular, to a kind of shell and preparation method thereof and electronic product.
Background technique
In the prior art, shield before glass and the combination of metal base frame is substantially and directly fits group with glue Dress, for example, Mobile phone screen is mostly to put a plastic washers (soft) between glass and metal base frame, by glass and gold Belong to glue coating on substrate frame, is assembled.Therefore, the combination of glass and metal base frame determines metal base With the binding force size of glass.There are following several big disadvantages for the shell being prepared by this method: (1) between glass and metal base Binding force it is smaller, in conjunction with not close, have the gap, be non-watertight, is easy to fall off;(2) no platform is not all accomplished in substantially all of fitting Rank combines, and causes glass prominent, not only increases the thickness of shell, while also increasing broken screen danger;(3) preparation section compared with It is more, production cost is increased, while also improving fraction defective.
Summary of the invention
The purpose of the invention is to overcome drawbacks described above in the prior art, provide a kind of shell and preparation method thereof and Electronic product, in the shell glass cover-plate with it is seamless between metal base frame, combined without step, between glass and metal base Binding force it is high, broken screen is nearly low, waterproof ability is strong.
To achieve the goals above, in a first aspect, the present invention provides a kind of shell, the shell include glass cover-plate, Plastic frame body and metal base frame, the glass cover-plate, plastic frame body and metal base frame are successively combined without step;Institute State and be formed with composite coating on a side surface of glass cover-plate, the composite coating by the glass cover plate surfaces outward direction according to Secondary includes thermal insulation layer, surface decoration layer, PET film, explosion-proof layer and protective layer.
Second aspect, the present invention provides a kind of preparation methods of shell, which comprises
(1) composite coating is prepared, the composite coating includes the thermal insulation layer set gradually, surface decoration layer, PET film, prevents Quick-fried layer and protective layer;
(2) composite coating is fitted in by the composite coating in such a way that thermal insulation layer is towards the glass substrate On one side surface of the glass substrate;
(3) it is coated with activator on the edge of glass cover-plate, dries;
(4) glass cover-plate that step (3) obtains is combined with metal base frame by way of injection molding.
The third aspect, the present invention provides the shells that method of the present invention is prepared.
Fourth aspect, the present invention provides a kind of electronic product, the electronic product includes shell of the present invention.
In shell of the invention, the binding force between glass cover-plate and metal base may be up to 700N or more (speed 10mm/ Min), and glass cover-plate with it is seamless by plastic frame body between metal base frame, combine (by the side of injection molding without step Formula, especially normal temperature molding are intermediate metal substrate combining and glass cover-plate using plastic cement, substantially increase knot between the two With joint efforts, and glass cover-plate, plastic frame body and metal base frame are in same plane, three be in sustained height and successively without Step combines), binding force is good, broken screen is nearly low, waterproof ability is strong, it is frivolous, beautiful, can be used as practical cover board dress With shell, and preparation method reduces patch screen process, reduces production cost, improves product yield.
In method of the invention, by being coated with activator on the edge of glass cover-plate, so that the activating component of activator It crosslinks and reacts with injection molding plastic cement, plastic frame body and glass cover-plate, plastic frame body and metal base can be dramatically increased Binding force between frame reduces broken screen danger.
It is high when advantageously reducing high temperature plastic-injection by increasing thermal insulation layer in composite coating in method of the invention Temperature easily shrinks into ridges to the high wind-warm syndrome of rupture pressure disc (including explosion-proof layer and PET film) etc. when so as to improve rupture pressure disc injection molding The problem of, so that glass surface can have texture appearance effect abundant.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more New numberical range, these numberical ranges should be considered as specific open herein.
In order to solve mentioned in background technique " binding force between glass and metal base is smaller, in conjunction with not close, has It is gap, non-watertight, easy to fall off " the problem of, the present inventor proposes glass cover-plate and metal by way of injection molding The method that substrate frame combines.However, in actual operation, inventor has found new problem again, i.e., for shell, It usually requires to form the surface coverings such as surface decoration layer, PET film, explosion-proof layer in glass cover plate surfaces shape in glass cover plate surfaces At texture appearance effect abundant;However the process for being combined glass cover-plate with metal base frame by way of injection molding In, the high wind-warm syndrome of injection temperature is likely to result in rupture pressure disc (including explosion-proof layer and PET film) etc. and shrinks into ridges, and then influences The problem of shell appearance.In order to solve this problem, a kind of new shell and preparation method thereof is provided in the present invention.
In a first aspect, the shell includes glass cover-plate, plastic frame body and metal base the present invention provides a kind of shell Frame, the glass cover-plate, plastic frame body and metal base frame are successively combined without step;The side table of the glass cover-plate Composite coating is formed on face, the composite coating successively includes thermal insulation layer, surface by the glass cover plate surfaces outward direction Decorative layer, PET film, explosion-proof layer and protective layer.
In shell of the invention, the surface decoration layer with a thickness of 10-50 μm, the rupture pressure disc (including PET film and anti- Quick-fried layer) with a thickness of 5-70 μm, the protective layer with a thickness of 50-100 μm.
In shell of the invention, the surface decoration layer includes that the inside being formed in thermal insulation layer surface has hollowed out area Decorative ink layer, the metallic mirror surface filled layer that is filled in the hollowed out area of the decorative ink layer and be formed in described Black-out ink layer on decorative ink layer and metallic mirror surface filling layer surface;It is preferred that the decorative ink layer with a thickness of 5- 15 μm, metallic mirror surface filled layer with a thickness of 200nm-600nm and black-out ink layer with a thickness of being higher by the decorative ink 2-4 μm of layer.
In shell of the invention, raw material used by surface decoration layer, PET film, explosion-proof layer and protective layer is referring to ability The conventional material in domain, preparation method is as shown in following method part.
In shell of the invention, thermal insulation layer can include polyethylene-acrylate, polyacrylate water glass for main component The coating of one or more of glass and silica solution, is also possible to adiabatic gum band.The commercial goods that can wherein use include But it is not limited to be commercially available from the polyethylene-acrylate type insulating moulding coating of Rui Peimu company, the U.S., or is commercially available from Japanese ippon company The heat-insulating slurry of the polyacrylate waterglass of production, or it is commercially available from the bonding adiabatic gum band of Minnesota Mining and Manufacturing Company's production.It should Description of the specific preparation method of thermal insulation layer referring to lower noodle producing method part.
In shell of the invention, it will be understood by those skilled in the art that between glass cover-plate and metal base frame It is seamless by plastic frame body, combined without step, specifically, plastic frame body be cured, hard plastic frame body, glass cover-plate, Plastic frame body and metal base frame are in same plane, and three is in sustained height and successively combines without step.
In shell of the invention, in order to significantly improve the binding force between glass cover-plate and metal base, and it is substantially reduced broken Screen is dangerous, and under preferable case, the material of plastic frame body is polyamide (PA), glass fibre (GF), polycarbonate (PC) and polyphenyl At least one of thioether (PPS), further preferably at least one of polyamide, polycarbonate and polyphenylene sulfide and glass The mixture of fiber, the still more preferably mixture for polyamide and glass fibre.
Wherein it is preferred in plastic frame body, the total weight of at least one of polyamide, polycarbonate and polyphenylene sulfide Ratio with the weight of glass fibre is (0.5-5): 1, further preferably (1-3): 1.Those skilled in the art should understand that , when in plastic frame body containing one of polyamide, polycarbonate and polyphenylene sulfide, polyamide, polycarbonate and polyphenyl The total weight of at least one of thioether is the weight of the one kind, contains polyamide, polycarbonate and polyphenylene sulfide in plastic frame body When two or more in ether, the total weight of at least one of polyamide, polycarbonate and polyphenylene sulfide is that this is two or more Weight and.In the present invention, polyamide, glass fibre, polycarbonate and polyphenylene sulfide are respectively common various polyamide, glass Fiber, polycarbonate and polyphenylene sulfide can be commercially available.
In shell of the invention, for metal base, there is no particular limitation, can be various metals commonly used in the art Substrate, under preferable case, metal base is stainless steel substrate or aluminum alloy base material.
In shell of the invention, in order to further increase the binding force between glass cover-plate and metal base, and it is substantially reduced Broken screen is dangerous, and under preferable case, metal base is aluminum alloy base material, and the surface of aluminum alloy base material frame is formed with anode oxide film Layer, and micropore is formed in the extexine of the anode oxidation membrane.Aforementioned metal substrate frame can be by including following processing The method of step is prepared: stainless steel or aluminium alloy are successively carried out machine-shaping, polishing, chemical polishing, blasting treatment, can Anodized, micropore processing and the pad pasting processing of choosing.Specific step is detailed in aftermentioned corresponding contents.
In shell of the invention, the size of glass cover-plate, plastic frame body and metal base frame is not limited particularly It is fixed, it can accordingly be designed, be specifically designed and sized to as it is known to those skilled in the art that herein no longer according to actual needs It repeats.
Second aspect, the present invention provides a kind of preparation methods of shell, which comprises
(1) composite coating is prepared, the composite coating includes the thermal insulation layer set gradually, surface decoration layer, PET film, prevents Quick-fried layer and protective layer;
(2) composite coating is fitted in by the composite coating in such a way that thermal insulation layer is towards the glass substrate On one side surface of the glass substrate;
(3) it is coated with activator on the edge of glass cover-plate, dries;
(4) glass cover-plate that step (3) obtains is combined with metal base frame by way of injection molding.
In method of the invention, the protective layer is release film protective layer, prepares the side of composite coating in step (1) at this time Method includes: that rupture pressure disc is formed on the release film protective layer, and the rupture pressure disc includes PET film and formed on a pet film Explosion-proof layer, wherein explosion-proof layer is arranged towards the release film protective layer;In the rupture pressure disc backwards to the release film protective layer Surface decoration layer is formed on one side surface (i.e. on pet sheet face);Thermal insulation layer is formed on the surface decoration layer.
In method of the invention, the release film protective layer can use commercially available material, such as E.I.Du Pont Company production it is light Release release film, in another example the gum-free release film of Best Co., Ltd's production.
In method of the invention, the material that the rupture pressure disc can be used using row industry routine, is by will be explosion-proof Glue is sprayed on PET film (polyethylene terephthalate) and is formed, and used rupture pressure disc can be commercially available in the present invention OCA rupture pressure disc, can be specifically the OCA rupture pressure disc of SKC company production, in another example the OCA of Japanese prince company production is anti- Quick-fried film, the rupture pressure disc can (preferable temperature be 30-50 DEG C, and pressure is 80 × 10 by roll-in3-180×103Pa method shape) At on the release film protective layer.
In method of the invention, thermal insulation layer can include polyethylene-acrylate, polyacrylate water glass for main component The coating of one or more of glass and silica solution is also possible to bond adiabatic gum band.The commercial goods that can wherein use It include but is not limited to be commercially available from the polyethylene-acrylate type insulating moulding coating of Rui Peimu company, the U.S., or be commercially available from Japanese ippon The heat-insulating slurry of the polyacrylate waterglass of company's production, or it is commercially available from the bonding adiabatic gum of Minnesota Mining and Manufacturing Company's production Band.Wherein, when thermal insulation layer can include polyethylene-acrylate, polyacrylate waterglass and silica solution for main component One or more of coating when, which can pass through silk-screen, spraying insulating moulding coating, the bonding modes shape such as adiabatic gum band At;It, can be using the poly- second of U.S. Rui Peimu company production when forming thermal insulation layer using silk-screen, spraying insulating moulding coating mode Alkene-acrylic ester type insulating moulding coating, or the production of Japanese ippon company polyacrylate waterglass heat-insulating slurry or U.S. Du Company, nation silica solution type insulating moulding coating, preparation method are that heat-insulating slurry addition is formulated as the slurry that solid content is 80-90wt% Then material silk-screen or is sprayed on the surface decoration layer;It, can when forming thermal insulation layer by the way of bonding adiabatic gum band To use method specifically will to bond after bonding adiabatic gum band heating using the bonding adiabatic gum band of Minnesota Mining and Manufacturing Company's production On the surface decoration layer.
In method of the invention, for aforementioned composite coating, material layer is more, can complete in different workshop sections different Work, such as be initially formed the partial coating including rupture pressure disc and protective layer, then other workshop section complete subsequent thermal insulation layer and The preparation of surface decoration layer can be in PET film under preferable case at this time in order to protect to PET film exposed in rupture pressure disc Upper formation protective film (such as ultra-thin electrostatic protection film) removes the protective film when preparing and forming surface decoration layer again.
In method of the invention, in the rupture pressure disc on a side surface of the release film protective layer (i.e. pet sheet face On) the step of forming surface decoration layer includes: to be formed internal to have vacancy section (i.e. on pet sheet face) in the explosion-proof film surface The decorative ink layer in domain;The ink raw materials for being wherein used to form the decorative ink layer can be modification acrylate, such as South Korea The MC-JQ00 type ink of LSNJ company production, in another example the 8031-4 type ink of Swiss Franc company production.The decorative ink layer can be with It is formed in such a way that UV is transferred;
Hollowed out area forms metallic mirror surface filled layer in the decorative ink layer;The metallic mirror surface filled layer can pass through The mode of spraying mirror-like silver ink or electroplating metal material is formed;The mirror-like silver ink that wherein can be used can be arbitrarily Commercial product, as long as adhesive force and color use.Such as it is commercially available from Shenzhen and consolidates the GM-911 mirror-like silver of Xingda's ink, quotient JMY-9200 mirror-like silver ink purchased from sunflower Electronic Materials Corp, Shenzhen or the SP-8580 for being commercially available from Seiko ink Mirror-like silver ink;At this time preferably the metallic mirror surface filled layer with a thickness of 2.5-6 μm, more preferably 4-6 μm.And in order to by institute The film thickness monitoring of metallic mirror surface is stated in 4-6 μ m.The electroplated metal layer that can wherein use can be indium or tin coating.Its The technique that middle indium plating or tin can be plated using vacuum evaporation coating or ion sputtering, plating raw material can be selected from metallic tin, metal Indium, TiN or TiO are preferably formed by indium or tin coating thickness between 200nm-600nm.
Black-out ink layer is formed by being screen printed on the decorative ink layer and the metallic mirror surface filled layer.Wherein MRX-912 (black), the EG-911C of the black black out ink that the black black-out ink layer can use such as empire's Printing ink producing (dense black), Seiko ink 1000-710 (black), 1000-710C (dense black) etc..
In method of the invention, step forms adhesive layer in the thermal insulation layer surface in (2), and the composite coating is glued It closes on a side surface of the glass substrate, then the precuring 80-100min at 80-100 DEG C.Wherein adhesive layer can be adopted Material includes but is not limited to polyurethane and/or acrylate.It specifically can be using the 1300HK type of Seiko company production Binder or the IBM002 type binder of company, empire production.
In the case of process of the present invention it is preferred, this method further include: in step (3), before being coated with activator, until It is few that ink is coated on the edge of glass cover-plate, solidify.Wherein it is possible to be determined according to the applicable cases of shell in glass cover-plate Which position on be coated with ink, for example, if shell be used as before screen cover board shell when, only on the edge of glass cover-plate It is coated with ink, mainly plays a part of to cover ITO circuit;If shell shields cover board shell after being used as, in glass cover-plate Surface is coated with ink on (edge including inner surface), shields cover board color of shell after mainly playing display.
In method of the invention, in step (3), in order to improve the binding force between glass cover-plate and metal base, and reduce Broken screen is dangerous, and under preferable case, glass cover-plate is that edge has carried out the glass cover-plate of roughening treatment, to increase its rough surface Degree.Roughening treatment is well known to those skilled in the art, and details are not described herein.
In method of the invention, in step (3), for ink, there is no particular limitation, can be commonly used in the art each Kind of ink, under preferable case, ink is UV ink or thermosetting ink.
Wherein, in step (3), for the mode of coating, there is no particular limitation, can be any mode that can be coated with, In order to facilitate production, under preferable case, the mode for being coated with ink is silk-screen, the ink of silk-screen with a thickness of 5-15 μm.Specific silk The method of print is well known to those skilled in the art, and details are not described herein.
In method of the invention, in step (3), in order to significantly improve the binding force between glass cover-plate and metal base, and It is dangerous to be substantially reduced broken screen, under preferable case, activator includes activating component, diluent and curing agent, with the activator On the basis of weight, the content of the activating component is 80-94 weight %, further preferably 85-91 weight %;The diluent Content be 5-19 weight %, further preferably 6-10 weight %;The content of the curing agent is 1-10 weight %, further Preferably 3-5 weight %.
Preferably, the activating component is at least one in polyurethane, epoxy resin, polyimides and polyacrylate Kind.
Preferably, the diluent is at least one of acetone, ethyl acetate and ethyl acetate.
Preferably, the curing agent is at least one of ethylenediamine, ethylene glycol, glycerine and diethylenetriamines.
In order to further increase the binding force between glass cover-plate and metal base, and broken screen danger is further decreased, preferably Ground, in step (3), the activator of coating with a thickness of 5-15 μm.Wherein, the mode of coating can be silk-screen.The method of silk-screen It may include: using 300-380 mesh halftone, toward two layers of duplicating, specific operating method is well known to those skilled in the art, Details are not described herein.
In method of the invention, in step (3), the cured condition carried out after coating ink is not limited particularly It is fixed, it can be selected according to the type of ink, be various conditions commonly used in the art, wherein when ink is UV ink, Gu The mode of change is exposure, it is preferable that conditions of exposure includes: that power is 500-1200kW, time 1-5min;Ink is thermosetting oil Mo Shi, cured mode are drying, it is preferable that the condition of drying includes: that temperature is 80-90 DEG C, time 50-100min.
In method of the invention, in step (3), the condition of the drying for carrying out after coating activator is not limited particularly It is fixed, it can be various conditions commonly used in the art, under preferable case, the condition of drying includes: that temperature is 75-90 DEG C, and the time is 40-120min.Wherein, in order to reach optimum efficiency, after drying, should be molded as early as possible, if Storage period is longer, it is desirable that injection molding temperature It spends higher.
In method of the invention, in step (4), for metal base, there is no particular limitation, can be commonly used in the art Various metal bases, under preferable case, metal base is stainless steel substrate or aluminum alloy base material.
Wherein, the metal base frame of the prior art is generally by including that the method for following processing step is prepared: will Stainless steel or aluminium alloy successively carry out machine-shaping, polishing, chemical polishing, blasting treatment and pad pasting processing, in order to further mention Binding force between high glass cover-plate and metal base, and further decrease broken screen danger, it is preferable that metal base frame is aluminium conjunction Auri edge frame, the aluminum alloy base material frame by include following processing step method be prepared: by aluminum alloy base material according to Secondary progress machine-shaping, polishing, chemical polishing, blasting treatment, anodized, micropore processing and pad pasting processing are (in metal Pad pasting is that anode oxide film is scratched in order to prevent on frame).Wherein, it handles, makes before increasing micropore after anodized The extexine for obtaining anode oxidation membrane forms micron-sized big etch pit, by this corrosion pore-creating again, in subsequent molding In the process, plastic material can be easier to be directly entered in substrate surface hole in injection moulding process, thus after forming plastic frame body Good combination is formed with substrate, the binding force between glass cover-plate and metal base can be further increased.
Preferably, the mode of micropore processing are as follows: the substrate for obtaining anodized is dipped into etching liquid, in anode Oxidation film layer extexine forms the etch pit that aperture is 200nm-2000nm.Wherein, etching liquid can be by anode oxide film film The solution of layer corrosion, for example, general adjust concentration with the solution that can dissolve aluminium oxide, it can be acid/base etching liquid, such as The solution that can be 10-13 selected from pH.It can be that single alkaline solution that pH is 10-13 or composite buffering are molten under preferable case Liquid, the single alkaline solution that pH is 10-13 can be Na2CO3、NaHCO3、NaOH、K2CO3、KHCO3, KOH etc. aqueous solution, into One step is preferably Na2CO3And/or NaHCO3Aqueous solution can be such that etch pit is uniformly distributed in substrate surface, and uniform pore diameter, It can make the binding performance of glass cover-plate and substrate more preferably.The solid content of above-mentioned etching liquid can be 0.1-15 weight %.It is compound Buffer solution can be the mixed solution of soluble phosphoric acid hydrogen salt and water soluble alkali, such as the water of sodium dihydrogen phosphate and sodium hydroxide The solid content of the aqueous solution of solution, sodium dihydrogen phosphate and sodium hydroxide can be 0.1-15 weight %, or K3PO4With K2HPO4Aqueous solution, composite buffering solution can also be ammonia spirit, hydrazine aqueous solution, hydrazine derivate aqueous solution, water-soluble amine system Compound water solution, NH3-NH4Cl aqueous solution etc..It includes by base that the substrate that anodized is obtained, which is dipped into etching liquid, In the repeated multiple times immersion etching liquid of material, the time impregnated every time can be 1-60min, be washed with deionized water after dipping every time, The number of immersion can be 2 to 10 times.Cleaning, which can be to be put into rinsing bowl, cleans 1 to 5min, or is put into rinsing bowl and puts Set 1 to 5min.
Wherein, for the method for machine-shaping, polishing, chemical polishing, blasting treatment, anodized and pad pasting processing It is not particularly limited, can be various methods commonly used in the art, this is well known to the skilled person, for example, sandblasting The condition of processing may include: that sandblasting pressure is 0.23-0.25MPa, 2-4 times reciprocal, walking speed 12-22Hz, wherein can make With 205 ceramic sands, wobble frequency can be 33Hz (board fixed frequency).The condition of anodized may include: electrolysis Sulfuric acid concentration is 10-30 weight %, aluminium ion concentration 10-30g/L in liquid;Temperature is 15-25 DEG C, current density 0.6- 3A/dm2, voltage 10-20V, oxidization time 30min-50min.
In method of the invention, in order to further increase the binding force between glass cover-plate and metal base, and further drop Low broken screen is dangerous, under preferable case, this method further include: before injection molding, be coated with and live on the inward flange of metal base frame Agent, drying.
Wherein, in order to significantly improve the binding force between glass cover-plate and metal base, and it is substantially reduced broken screen danger, preferably In the case of, the activator being coated on the inward flange of metal base frame includes activating component, diluent and curing agent, with described On the basis of the weight of activator, the content of the activating component is 80-94 weight %, further preferably 85-91 weight %;Institute The content for stating diluent is 5-19 weight %, further preferably 6-10 weight %;The content of the curing agent is 1-10 weight Measure %, further preferably 3-5 weight %.
Preferably, the activating component is at least one in polyurethane, epoxy resin, polyimides and polyacrylate Kind.
Preferably, the diluent is at least one of acetone, ethyl acetate and ethyl acetate.
Preferably, the curing agent is at least one of ethylenediamine, ethylene glycol, glycerine and diethylenetriamines.
In order to further increase the binding force between glass cover-plate and metal base, and broken screen danger is further decreased, preferably Ground, the activator being coated on the edge of metal base frame with a thickness of 5-15 μm.
Wherein, not special for being coated with the condition of the drying carried out after activator on the edge of metal base frame It limits, can be various conditions commonly used in the art, under preferable case, the condition of drying includes: that temperature is 75-90 DEG C, the time For 40-120min.
In the case of process of the present invention it is preferred, in step (4), the mode of injection molding is normal temperature molding, further preferably Ground, the condition of injection molding include: that injection molding width is 0.5-1mm, and mold temperature is 15-35 DEG C, and injection molding material temperature is 200-300 DEG C.
In method of the invention, in order to significantly improve the binding force between glass cover-plate and metal base, and it is substantially reduced broken Screen is dangerous, and under preferable case, injection molding material is at least one of polyamide, glass fibre, polycarbonate and polyphenylene sulfide, into one Step is preferably the mixture of at least one of polyamide, polycarbonate and polyphenylene sulfide with glass fibre, still more preferably For the mixture of polyamide and glass fibre.
Wherein it is preferred to the total weight and glass fibre of at least one of polyamide, polycarbonate and polyphenylene sulfide The ratio of weight is (0.5-5): 1, further preferably (1-3): 1.It will be understood by those skilled in the art that in injection molding material When containing one of polyamide, polycarbonate and polyphenylene sulfide, at least one of polyamide, polycarbonate and polyphenylene sulfide Total weight be one kind weight, it is poly- when in injection molding material containing two or more in polyamide, polycarbonate and polyphenylene sulfide The total weight of at least one of amide, polycarbonate and polyphenylene sulfide be the two or more weight and.
In method of the invention, as previously mentioned, according to a preferred embodiment of the present invention, by the side of glass cover-plate Edge is roughened, while metal base frame is carried out micropore processing, its surface is made to form countless nanometer micropores;Locating Silk-screen activator on glass cover-plate and metal base frame after reason, then glass cover-plate is placed in gold by way of normal temperature molding Belong in substrate frame, realizes that metal base, plastic cement, glass cover-plate are combined without step.
Wherein, under preferable case, glass cover-plate (especially shell is as preceding screen cover board shell) is OGS (One Glass Solution touch panel of the same name, one block of glass play a dual role of protecting glass and touch sensor simultaneously) touch screen tempered glass, Product thickness is reduced, the barrier that injection temperature influences touch screen is breached, makes glass cover-plate and metal base frame one Chemical conversion type can reduce product sequence, reduce cost, improve product performance and decorative product appearance, make product it is more frivolous, It is practical.
In method of the invention, this method further include: after the injection-moulding remove extra peak.
The third aspect, the present invention provides the shells that preceding method of the present invention is prepared.
Fourth aspect, the present invention provides a kind of electronic product, the electronic product includes shell of the present invention.
For electronic product, there is no particular limitation, as long as having glass cover-plate and metal base frame in the electronic product i.e. It can, it is preferable that the electronic product is mobile phone, tablet computer, game machine, wrist-watch, notebook, desktop computer, TV or instrument Display.
Preferably, the shell is the preceding screen cover board shell, rear screen cover board shell or water-tight watch case of electronic product.Further Preferably, the shell can be applied to the preceding screen of 2.5D and 3D, to improve the decorative effect of product, when shell is applied to It further include that aforementioned composite coating is placed in film before composite coating is bonded on glass cover-plate when the preceding screen of 2.5D and 3D Hot bending is formed and the matched curved-surface structure of 2.5D or 3D covering plate structure in piece hot-bending machine.
Embodiment
The present invention will be described in detail by way of examples below.It is unless otherwise instructed, used in following embodiment Reagent material can be commercially available, and method used is the conventional method of this field.
Polyurethane is purchased from E.I.Du Pont Company, trade mark PA66HTN501.
Epoxy resin is purchased from E.I.Du Pont Company, trade mark PKHH.
Polyimides is purchased from E.I.Du Pont Company, trade mark 200H.
Polyacrylate is purchased from Guangzhou Ke Tai Chemical Co., Ltd., trade mark 7732-18-5.
Polyamide is purchased from E.I.Du Pont Company, trade mark 73G20L.
Glass fibre is purchased from E.I.Du Pont Company, trade mark FR530NC010.
Polycarbonate is purchased from E.I.Du Pont Company, trade mark CG943.
Polyphenylene sulfide is purchased from E.I.Du Pont Company, trade mark HTN52G35HSL.
Release film protective layer is purchased from E.I.Du Pont Company, and the trade mark is transparent QL-03, with a thickness of 3 μm.
OCA rupture pressure disc (including PET film and explosion-proof layer) is purchased from SKC company, trade mark SH50, with a thickness of 50 μm.
UV transfer ink is purchased from LSNJ company, trade mark MC-JQ00.
Metallic mirror surface silver ink is purchased from Shenzhen sunflower Electronic Materials Corp, and the trade mark is JMY-9200 mirror-like silver ink.
Black-out ink layer is purchased from empire, and the trade mark is ink MRX-912 (black);
Polyethylene-acrylate type heat-insulating slurry is purchased from U.S. Rui Peimu company, trade mark RPM705.
It bonds adiabatic gum band and is purchased from Minnesota Mining and Manufacturing Company, trade mark 3M5433.
Binder is purchased from Seiko company, trade mark 1300-HK.
The condition of blasting treatment includes: using 205 ceramic sands, and sandblasting pressure is 0.24MPa, and reciprocal 3 times, walking speed is 18Hz, wobble frequency 33Hz.
Embodiment 1
(1) release film protective layer is taken, (temperature is 30 DEG C, and pressure is 100 × 10 by roll-in3Pa mode) prevents OCA Quick-fried film is compounded on release film protective layer in a manner of outwardly by pet layer;The ink slurry for preparing decorative ink layer, is transferred by UV Mode in OCA rupture pressure disc on pet layer surface formed inside with hollowed out area decorative ink layer (with a thickness of 12 μm);It takes Aforementioned metal mirror-like silver ink, and by the ink under conditions of 2# glasss, 25 DEG C of rock field adjustment viscosity to 12s;Then described Aforementioned mirror-like silver ink is sprayed in the hollowed out area of decorative ink layer, then dry solidification (drying 30min at 150 DEG C) formation is filled out Fill the metallic mirror surface filled layer in the hollowed out area in the decorative ink layer (with a thickness of 4 μm);Aforementioned black black out ink is taken, And the hollow out ink decor surface is sprayed on after the ink adjusted viscosity to 12s under conditions of 2# glasss, 25 DEG C of rock field Upper formation black black-out ink layer (with a thickness of 6 μm);Take polyethylene-acrylate type heat-insulating slurry, addition diluent to slurry Solid content be 85wt%, after then being handled by way of stirring, be screen printed onto the black-out ink layer formed it is heat-insulated Layer (with a thickness of 6 μm), and then form composite coating.
(2) foregoing adhesives are coated on the surface of the thermal insulation layer by mode for dispensing glue, then by vacuum abutted Equipment fits the inner surface of aforementioned composite coating and OGS touch screen tempered glass, then spare through 90 DEG C of pretreatment 90min;
(3) will treated that OGS touch screen tempered glass edge is roughened through aforementioned, with the halftone of 70T in glass The edge screen printing UV inks of glass, the silk-screen of UV ink is with a thickness of 10 μm, then under the exposure machine of 900kW, exposes 3min;With For the halftone of 380 mesh by activator silk-screen on UV ink, then glass is put into 90 DEG C with a thickness of 10 μm by the silk-screen of activator Dry 90min in tunnel dryer;Wherein, activator is polyurethane system, including polyurethane, acetone and ethylenediamine, with described On the basis of the weight of activator, the content of polyurethane, acetone and ethylenediamine is respectively 88 weight %, 8 weight % and 4 weight %.
(4) aluminium alloy is successively subjected to machine-shaping, polishing, chemical polishing, blasting treatment, anodized, micropore Processing and pad pasting processing, obtain aluminum alloy base material frame, then will be coated on aluminum alloy base material by identical activator with step (3) On the inward flange of frame, coating thickness is 10 μm, in 80 DEG C of drying 90min;Wherein, the condition of anodized includes: electricity Solving sulfuric acid concentration in liquid is 20 weight %, and aluminium ion concentration 20g/L, temperature is 20 DEG C, current density 1.5A/dm2, voltage For 15V, oxidization time 40min;The condition of micropore processing includes: that substrate is immersed in the sodium carbonate that pH is 12,10 weight % It in solution, is drawn off after 5min, is put into the beaker equipped with water and impregnates 1min, so circulation 5 times, be soaked in water for the last time Afterwards, it dries;
(5) injection molding material (polyamide and glass fibre according to weight ratio 2:1 mix) is put into baking oven and is preheated to 250 DEG C, the aluminum alloy base material frame that the glass cover-plate that step (3) obtains is obtained with step (4) is mutually tied by way of normal temperature molding It closes, wherein injection molding width is 0.8mm, and mold temperature is 30 DEG C, and injection molding material temperature is 250 DEG C.
(6) extra peak is removed, obtains shell product A1.
Embodiment 2
(1) release film protective layer is taken, (temperature is 30 DEG C, and pressure is 100 × 10 by roll-in3Pa mode) prevents OCA Quick-fried film is compounded on release film protective layer in a manner of outwardly by PET film;The ink slurry for preparing decorative ink layer, is transferred by UV Method formed on PET film surface inside with hollowed out area decorative ink layer (with a thickness of 12 μm);It then will be aforementioned multiple Film is closed to be placed in vacuum coating equipment, so that hollowed out area is exposed outside in decorative ink layer, using indium metal as plating raw material, It the evaporation plating 20min time under the conditions of vacuum degree 0.4Pa, is formed indium coating (with a thickness of 20nm);Then aforementioned black shading oil is taken Ink, and the hollow out ink decorative layer table is sprayed on after the ink is adjusted viscosity to 12s under conditions of 2# glasss, 25 DEG C of rock field Form black black-out ink layer on face (with a thickness of 6 μm);Take polyethylene-acrylate type heat-insulating slurry, addition diluent to slurry The solid content of material be 85wt%, after then being handled by way of stirring, be screen printed onto the black-out ink layer formed every Thermosphere (with a thickness of 6 μm), and then form composite coating.
(2) foregoing adhesives are coated on the surface of the thermal insulation layer by mode for dispensing glue, then by vacuum abutted Equipment fits the inner surface of aforementioned composite coating and OGS touch screen tempered glass, then spare through 90 DEG C of pretreatment 90min;
(3) OGS touch screen tempered glass edge is roughened, it is hot in the edge silk-screen of glass with the halftone of 70T Gu ink, then the silk-screen of thermosetting ink dries 90min with a thickness of 15 μm in 80 DEG C of baking oven;It will be lived with the halftone of 300 mesh In on thermosetting ink, then glass is put into 80 DEG C of tunnel dryer agent silk-screen by the silk-screen of activator with a thickness of 15 μm Dry 110min;Wherein, activator is polyurethane system, including polyurethane, ethyl acetate and ethylene glycol, with the activator On the basis of weight, the content of polyurethane, ethyl acetate and ethylene glycol is respectively 85 weight %, 10 weight % and 5 weight %.
(4) aluminium alloy is successively subjected to machine-shaping, polishing, chemical polishing, blasting treatment, anodized, micropore Processing and pad pasting processing, obtain aluminum alloy base material frame, then will be coated on aluminum alloy base material by identical activator with step (3) On the inward flange of frame, coating thickness is 15 μm, in 75 DEG C of drying 110min;Wherein, the condition of anodized includes: electricity Solving sulfuric acid concentration in liquid is 15 weight %, and aluminium ion concentration 28g/L, temperature is 15 DEG C, current density 1A/dm2, voltage is 10V, oxidization time 50min;The condition of micropore processing includes: that substrate is immersed in the sodium bicarbonate that pH is 10,15 weight % It in solution, is drawn off after 5min, is put into the beaker equipped with water and impregnates 1min, so circulation 5 times, be soaked in water for the last time Afterwards, it dries;
(5) injection molding material (polyamide and glass fibre according to weight ratio 1:1 mix) is put into baking oven and is preheated to 300 DEG C, the aluminum alloy base material frame that the glass cover-plate that step (3) obtains is obtained with step (4) is mutually tied by way of normal temperature molding It closes, wherein injection molding width is 1mm, and mold temperature is 15 DEG C, and injection molding material temperature is 300 DEG C.
(6) extra peak is removed, obtains shell product A2.
Embodiment 3
(1) release film protective layer is taken, (temperature is 30 DEG C, and pressure is 100 × 10 by roll-in3Pa mode) prevents OCA Quick-fried film is compounded on release film protective layer in a manner of outwardly by PET film;The ink slurry for preparing decorative ink layer, is transferred by UV Mode formed on pet layer inside with hollowed out area decorative ink layer (with a thickness of 12 μm);Take aforementioned metal mirror-like silver Ink, and by the ink under conditions of 2# glasss, 25 DEG C of rock field adjustment viscosity to 12s;Then engraving in the decorative ink layer Aforementioned mirror-like silver ink is sprayed in empty region, then dry solidification (drying 30min at 150 DEG C) formation is filled in the decoration oil Metallic mirror surface filled layer in the hollowed out area of layer of ink (with a thickness of 4 μm);Aforementioned black black out ink is taken, and by the ink in rock Formation black shading on the hollow out ink decor surface is sprayed on after adjusting viscosity to 12s under conditions of field 2# glasss, 25 DEG C Ink layer (with a thickness of 6 μm);Aforementioned bonding adiabatic gum band is taken, after handling by way of heating, is bonded in the black out ink It is formed thermal insulation layer (with a thickness of 5 μm) on layer, and then forms composite coating.
(2) foregoing adhesives are coated on the surface of the thermal insulation layer by mode for dispensing glue, then by vacuum abutted Equipment fits the inner surface of aforementioned composite coating and OGS touch screen tempered glass, then spare through 90 DEG C of pretreatment 90min;
(3) OGS touch screen tempered glass edge is roughened, it is hot in the edge silk-screen of glass with the halftone of 70T Gu ink, then the silk-screen of thermosetting ink dries 60min with a thickness of 5 μm in 90 DEG C of baking oven;It will be lived with the halftone of 300 mesh In on thermosetting ink, then glass is put into 80 DEG C of tunnel dryer and does with a thickness of 8 μm agent silk-screen by the silk-screen of activator Dry 50min;Wherein, activator is polyurethane system, including polyurethane, ethyl acetate and diethylenetriamines, with the activation On the basis of the weight of agent, the content of polyurethane, ethyl acetate and diethylenetriamines is respectively 91 weight %, 6 weight % and 3 weights Measure %.
(4) aluminium alloy is successively subjected to machine-shaping, polishing, chemical polishing, blasting treatment, anodized, micropore Processing and pad pasting processing, obtain aluminum alloy base material frame, then will be coated on aluminum alloy base material by identical activator with step (3) On the inward flange of frame, coating thickness is 5 μm, in 90 DEG C of drying 60min;Wherein, the condition of anodized includes: electrolysis Sulfuric acid concentration is 25 weight % in liquid, and aluminium ion concentration 15g/L, temperature is 25 DEG C, current density 2.5A/dm2, voltage is 20V, oxidization time 30min;The condition of micropore processing includes: that substrate is immersed in the sodium bicarbonate that pH is 10,15 weight % It in solution, is drawn off after 5min, is put into the beaker equipped with water and impregnates 1min, so circulation 5 times, be soaked in water for the last time Afterwards, it dries;
(5) injection molding material (polyamide and glass fibre according to weight ratio 3:1 mix) is put into baking oven and is preheated to 200 DEG C, the aluminum alloy base material frame that the glass cover-plate that step (3) obtains is obtained with step (4) is mutually tied by way of normal temperature molding It closes, wherein injection molding width is 0.5mm, and mold temperature is 35 DEG C, and injection molding material temperature is 200 DEG C.
(6) extra peak is removed, obtains shell product A3.
Embodiment 4
Shell product A4 is prepared according to the method for embodiment 1, unlike, activator is polyurethane system, including poly- ammonia Ester, acetone and ethylenediamine, on the basis of the weight of the activator, the content of polyurethane, acetone and ethylenediamine is respectively 80 weights Measure %, 10 weight % and 10 weight %.
Embodiment 5
Shell product A5 is prepared according to the method for embodiment 1, unlike, poly- ammonia is replaced with epoxy resin in activator Ester.
Embodiment 6
Shell product A6 is prepared according to the method for embodiment 1, unlike, poly- ammonia is replaced with polyimides in activator Ester.
Embodiment 7
Shell product A7 is prepared according to the method for embodiment 1, unlike, poly- ammonia is replaced with polyacrylate in activator Ester.
Embodiment 8
Shell product A8 is prepared according to the method for embodiment 1, unlike, in step (4), before injection molding, do not exist Activator is coated on the inward flange of aluminum alloy base material frame.
Embodiment 9
Shell product A9 is prepared according to the method for embodiment 1, unlike, it prepares during aluminum alloy base material frame simultaneously Without micropore processing.
Embodiment 10
Shell product A10 is prepared according to the method for embodiment 1, unlike, injection molding material is polycarbonate and glass fibre It is mixed according to weight ratio 2:1.
Embodiment 11
Shell product A11 is prepared according to the method for embodiment 1, unlike, injection molding material is polyphenylene sulfide and glass fibre It is mixed according to weight ratio 2:1.
Embodiment 12
Shell product A12 is prepared according to the method for embodiment 1, unlike, injection molding material is that polyamide and glass fibre are pressed It is mixed according to weight ratio 0.5:1.
Embodiment 13
Shell product A13 is prepared according to the method for embodiment 1, unlike, injection molding material is polyphenylene sulfide.
Embodiment 14
Shell product A14 is prepared according to the method for embodiment 1, unlike, injection molding material is polyamide.
Embodiment 15
Shell product A15 is prepared according to the method for embodiment 1, unlike, injection molding material is polycarbonate.
Embodiment 16
Shell product A16 is prepared according to the method for embodiment 1, unlike, injection molding material is glass fibre.
Comparative example 1
According to the method for embodiment 1, unlike, the method comprising the steps of (1)-(3), wherein
Step (1) are as follows: be roughened OGS touch screen tempered glass edge, with the halftone of 70T at the edge of glass Screen printing UV inks, the silk-screen of UV ink is with a thickness of 10 μm, then under the exposure machine of 900kW, exposes 3min;
Step (2) are as follows: aluminium alloy is successively carried out machine-shaping, polishing, chemical polishing, blasting treatment, at anodic oxidation Reason and pad pasting processing, obtain aluminum alloy base material frame;
Step (3) are as follows: put between the aluminum alloy base material sheet frame that step (1) obtained glass cover-plate and step (2) obtain One plastic washers, the glue coating on glass cover-plate and aluminum alloy base material sheet frame, are placed in aluminum alloy base material plate for glass cover-plate In frame, it is then placed in 90 DEG C of drying boxes and dries 30min.Obtain shell D1.
Comparative example 2
According to the method for embodiment 2, the difference is that, it does not include thermal insulation layer in composite coating.Obtain shell D2.
Test example
Following properties test is carried out to shell A1-A16 and D1-D2 respectively.
1, flatness is tested: with three coordinate measuring machine (being purchased from Hai Kesikang, model Global classic050705) Measure the flatness of the glass cover plate surfaces of each shell.It the results are shown in Table 1.
2, mirror surface thrust is tested: (being purchased from INSTRON, model 3369, fltting speed is with universal material mechanics machine The binding force between the glass cover-plate and metal base frame of each shell 10mm/min) is tested, metal base frame is fixed, is pushed Glass cover-plate is until glass breaking or glass fall off.30 parallel repetitions are done, are averaged.It the results are shown in Table 1.
3, each shell is assembled into complete machine, carries out drop test: non-loaded drop test, height 1m.After fall-down test, Record product does not occur the maximum times of deformation, impression and damage.It the results are shown in Table 1.
4, temperature shock is tested: each shell is respectively put into temperature shock test machine (purchased from KSON Qing Sheng company, model KSKC-415TBS in), -40 DEG C of placements 2h, 85 DEG C of placement 2h, this is 1 circulation, does 5 circulations altogether, then 25 DEG C of placement 4h, Test front/rear corrosion-free, spot, fade, change colour, crackle, blistering, distortion etc. is bad and cannot have finger nail to scratch phenomenon, It is as qualified.It the results are shown in Table 1.
5, moisture and hot ageing is tested: each shell being put in 50 DEG C, 72h in the climatic chamber of humidity 95%.Test front/rear nothing Burn into spot, fade, change colour, crackle, blistering, distortion etc. is bad and cannot have finger nail to scratch phenomenon, as qualified.Knot Fruit is shown in Table 1.
6, salt spray test: each shell is placed into salt spray chamber, under the conditions of temperature is 35 DEG C, humidity is 90%, uses pH The NaCl solution that value is 6.8,5 weight % is continuously 2 hours spraying to product surface, and each product is then placed in 50 DEG C, humidity 22 hours in 95% climatic chamber, this is a circulation, is 3 circulation 72h altogether.Then it is carried out using 38 DEG C of warm water soft Flushing, and with non-dust cloth wiped clean, room temperature checks sample after 2 hours, film layer appearance is without exception, appearance becomes without obvious Change and (such as corrodes, changes colour and blister), it is as qualified.It the results are shown in Table 1.
7, chemical resistance is tested: respectively uniformly applying edible oil, sunblock lotion, lipstick, foundation emulsion, mosquito repellent liquid, hand lotion etc. It smears after on each shell, being put in the climatic chamber that temperature is 70 DEG C, humidity is 90% for 24 hours, in 25 DEG C of placement 4h, uses alcohol Wipe product is as qualified without obvious remaining trace.It the results are shown in Table 1.
8, waterproof performance is tested: carrying out IPX7 submerging test in short-term, assembled complete machine is immersed in the water 30min, workpiece Top water be deep to few 150mm, the hydraulic pressure of 1m is at least born at nethermost position.After taking out the water surface, surface drying workpiece is placed After 30min, it can work normally as qualification.It the results are shown in Table 1.
9, composite coating binding force is tested: small in 10*10 (100) 1mm*1mm of test sample surface stroke with cross-cut tester Grid, each depth of score answer the bottom of depth and coating, are cleaned down the fragment of test zone with hairbrush, with 3M600 glue Paper firmly clings tested small grid, and firmly wipes adhesive tape with erasing rubber, holds adhesive tape one end, fast in vertical direction Speed shuts down adhesive tape, and same position carries out 2 identical experiments;The tilting of its floating coat is considered as unqualified, and coating is unchanged to be considered as qualification.
10, composite coating shrinks into ridges test: optical microscopy amplifies 50 times of observations, and wherein composite coating has not shunk Zou Be considered as qualification, appearance shunk Zou be considered as it is unqualified.
Table 1
As can be seen from Table 1, method of the invention can greatly improve the glass cover-plate and metal of the shell being prepared Binding force between substrate sheet frame greatly reduces glass and falls off and risk and drop rear broken screen danger, significantly improves product Energy.And method of the invention is used, by the way that thermal insulation layer is arranged between glass substrate and surface covering, can be applied to surface Layer is protected, avoid the surface covering in the preparation process of shell from shrinking into ridges, and then abundant convenient for shell formation surface Texture appearance effect.
In addition, can be seen that 3D glass metal prepared by 1-16 according to embodiments of the present invention by Visual Ispection method The bound fraction size matching of complex is more complete, is not present between glass and metal and there is assembly step, gap problem, and adopts There are have significantly assembly seam between glass and metal for the bound fraction of 3D glass metal complex prepared by documents 1 The problem of gap, step.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to Protection scope of the present invention.

Claims (17)

1. a kind of shell, which is characterized in that the shell includes glass cover-plate, plastic frame body and metal base frame, the glass Glass cover board, plastic frame body and metal base frame are successively combined without step;It is formed on one side surface of the glass cover-plate Composite coating, the composite coating successively include thermal insulation layer, optional incrustation by the glass cover plate surfaces outward direction Layer, PET film, explosion-proof layer and protective layer.
2. shell according to claim 1, wherein the surface decoration layer includes the inside being formed in thermal insulation layer surface Decorative ink layer with hollowed out area, the metallic mirror surface filled layer being filled in the hollowed out area of the decorative ink layer, with And it is formed in the black-out ink layer on the decorative ink layer and metallic mirror surface filling layer surface.
3. shell according to claim 1, wherein the overall thickness of the surface decoration layer is 10-50 μm, the PET film Be 5-70 μm with the overall thickness of explosion-proof layer, the protective layer with a thickness of 50-100 μm.
4. shell according to claim 1, wherein the material of the plastic frame body is polyamide, glass fibre, poly- carbonic acid At least one of at least one of ester and polyphenylene sulfide, preferably polyamide, polycarbonate and polyphenylene sulfide and glass fibers The mixture of the mixture of dimension, further preferably polyamide and glass fibre, it is further preferred that gathering in plastic frame body The ratio of the weight of the total weight and glass fibre of at least one of amide, polycarbonate and polyphenylene sulfide is 0.5-5:1, then Further preferably 1-3:1.
5. shell according to claim 1, wherein the metal base is stainless steel substrate or aluminum alloy base material.
6. according to claim 1, shell described in 4 or 5, wherein the metal base frame is aluminum alloy base material frame, described The surface of aluminum alloy base material frame is formed with anode oxidation membrane, and is formed with micropore in the extexine of the anode oxidation membrane.
7. a kind of preparation method of shell, which is characterized in that the described method comprises the following steps:
(1) composite coating is prepared, the composite coating includes the thermal insulation layer set gradually, surface decoration layer, PET film, explosion-proof layer, And protective layer;
(2) by the composite coating in such a way that thermal insulation layer is towards the glass substrate, the composite coating is fitted in described On one side surface of glass substrate;
(3) it is coated with activator on the edge of glass cover-plate, dries;
(4) glass cover-plate that step (3) obtains is combined with metal base frame by way of injection molding.
8. being prepared in step (1) compound according to the method described in claim 7, wherein, the protective layer is release film protective layer The method of coating includes:
Form rupture pressure disc on the release film protective layer, the rupture pressure disc includes PET film and forms on a pet film explosion-proof Layer, wherein explosion-proof layer is arranged towards the release film protective layer;
Surface decoration layer is formed on a side surface of the release film protective layer in the rupture pressure disc;
Thermal insulation layer is formed on the surface decoration layer.
9. according to the method described in claim 8, wherein, in the rupture pressure disc backwards to a side surface of the release film protective layer The step of upper formation surface decoration layer includes:
Decoration oil inside the rupture pressure disc is formed on a side surface of the release film protective layer with hollowed out area Layer of ink;
Hollowed out area forms metallic mirror surface filled layer in the decorative ink layer;
Black-out ink layer is formed on the decorative ink layer and the metallic mirror surface filled layer.
10. being incited somebody to action according to the method described in claim 7, wherein, forming adhesive layer in step (2) in the thermal insulation layer surface The composite coating is bonded on a side surface of the glass substrate, then the precuring 80-100min at 80-100 DEG C.
11. according to the method described in claim 7, wherein, this method further include: before injection molding, in metal base frame It is coated with activator on inward flange, dries.
12. according to the method described in claim 7, wherein, this method further include: in step (3), before being coated with activator, It is at least coated with ink on the edge of glass cover-plate, solidifies;
Preferably, the ink is UV ink or thermosetting ink;
Preferably, be coated with ink mode be silk-screen, the ink of silk-screen with a thickness of 5-15 μm.
13. the method according to any one of claim 7 to 12, wherein in step (3), the activator includes living Change component, diluent and curing agent, on the basis of the weight of the activator, the content of the activating component is 80-94 weight Measure %, preferably 85-91 weight %;The content of the diluent is 5-19 weight %, preferably 6-10 weight %;The solidification The content of agent is 1-10 weight %, preferably 3-5 weight %;
Preferably, the activating component is at least one of polyurethane, epoxy resin, polyimides and polyacrylate;
Preferably, the diluent is at least one of acetone, ethyl acetate and ethyl acetate;
Preferably, the curing agent is at least one of ethylenediamine, ethylene glycol, glycerine and diethylenetriamines;
Preferably, in step (3), the activator of coating with a thickness of 5-15 μm.
14. the method according to any one of claim 7 to 12, wherein in step (4), the metal base is aluminium Alloy base material,
Preferably, the metal base frame is by including that the method for following processing step is prepared: stainless steel or aluminium are closed Gold successively carries out machine-shaping, polishing, chemical polishing, blasting treatment, anodized, micropore processing and pad pasting processing.
15. the method according to any one of claim 7 to 12, wherein in step (4), the condition packet of the injection molding Include: injection molding width is 0.5-1mm, and mold temperature is 15-35 DEG C, and injection molding material temperature is 200-300 DEG C;
Preferably, the injection molding material is at least one of polyamide, glass fibre, polycarbonate and polyphenylene sulfide, more preferably For the mixture of at least one of polyamide, polycarbonate and polyphenylene sulfide and glass fibre, further preferably polyamide With the mixture of glass fibre, it is further preferred that the gross weight of at least one of polyamide, polycarbonate and polyphenylene sulfide The ratio of amount and the weight of glass fibre is 0.5-5:1, much further preferably from 1-3:1.
16. the shell that any one of claim 7 to 15 the method is prepared.
17. a kind of electronic product, which is characterized in that the electronic product includes described in any one of claim 1-6 and 16 Shell;
Preferably, the electronic product is mobile phone, tablet computer, game machine, wrist-watch, notebook, desktop computer, TV or instrument Display;
Preferably, the shell is the preceding screen cover board shell, rear screen cover board shell or water-tight watch case of electronic product.
CN201711064013.5A 2017-11-02 2017-11-02 Shell and preparation method thereof and electronic product Pending CN109747105A (en)

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PCT/CN2018/112471 WO2019085866A1 (en) 2017-11-02 2018-10-29 Outer casing, manufacturing method thereof, and electronic product
TW107138426A TW201918374A (en) 2017-11-02 2018-10-30 Housing, preparation method thereof and electronic product

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