CN109659667A - A kind of plastic casing structure and preparation method thereof - Google Patents
A kind of plastic casing structure and preparation method thereof Download PDFInfo
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- CN109659667A CN109659667A CN201811215021.XA CN201811215021A CN109659667A CN 109659667 A CN109659667 A CN 109659667A CN 201811215021 A CN201811215021 A CN 201811215021A CN 109659667 A CN109659667 A CN 109659667A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3888—Arrangements for carrying or protecting transceivers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of plastic casing structure, including plastic shell, PET composite decoration diaphragm on the inner surface of plastic shell is fitted in, PET composite decoration diaphragm includes PET base material, and PET base material includes binding face and decorative cover；Ink printed layer, UV lines layer, optical coatings are successively arranged on the decorative cover of PET base material；The optical coatings of PET composite decoration diaphragm are equipped with LDS antenna.The invention also discloses a kind of production methods of plastic casing structure.The large area water proof and dust proof antenna that the present invention manufactures inside plastic shell, the electronic product assembling structure surface of scrappy dispersion in traditional 3C electric product plastic rubber shell is solved without enough spatial design 5G signal antennas, and product appearance decorative effect is influenced when antenna is accomplished plastic shell surface and is easily damaged and is caused product integrally to damage and be difficult to the industry problems repaired, have glass or ceramic appearance, frivolous fashion, novel appearance.It also has the characteristics that preventing injury from fall waterproof simultaneously.
Description
Technical field
The present invention relates to a kind of shell structures, more particularly to a kind of plastic casing structure and preparation method thereof.
Background technique
With the arriving in 5G epoch, mobile phone, wearable product, need of the 3C such as mobile electron electronic product because of 5G wireless signal
It asks, starting use slowly influences lesser plastic cement to millimeter-wave signal, glass, the materials such as ceramics, to solve common metal,
The material envelopes such as carbon fiber influence the problem of aerial signal, while increasing the quantity of antenna, and innovate antenna structure and technique, with
Meets the needs of 5G network.
Although the materials such as glass, ceramics are small to the millimeter wave jamming of 5G wireless signal, because of the life of 3D glass heat pressing process
The production time is long, and ceramic material is hard to be difficult to, and clears off, and the complex procedures such as CNC grinding cause its technique cumbersome and time-consuming, good
Product rate is low, high production cost, and the limited problem of overall throughput of existing industry, limits it in common 3C electronic product
Large-scale application, can only be as the sheathing material of high-end product.
Glass and ceramic material intensity is high but poor toughness simultaneously, easy fragmentation use defect intolerant to hitting etc., result in it and answer
Product casing is unable to satisfy with being limited in scope, such as under three proofings field and wearable product scope, severe use environment
Use demand, and the assembling structure of the complexity such as button bit can not be produced because of processing difficulties, and cause to be often used glue or gum
Equal bonding modes are pasted on plastic cement or metal shell, and for glass structure once damaging, overall structure repairs difficulty, after sale to product
And maintenance brings larger difficulty.
Although glass and ceramic material meet 5G wireless network signal while promoting product appearance fashion novelty
Demand, but in high-end electronic product scope, customizes, modularization, can disassembly be arbitrarily direction that high-end product is applied, because
The glass structure part of traditional cementi technique is bonded using glue or gum, is unable to satisfy and is provided the fashion-orientation of customization to high-end customer
The demand of detachable structure；The application of ceramics with glass is further limited, so integrating, in the manufacturing, product knot
In structure, application field range, the size of capacity, maintenance and after-sale service, glass and ceramics receive various aspects limitation and can not
Extensive popularization and application, commonly using 3C electronic product material is still based on plastic cement.
Although plastic material can direct injection molding, at low cost, production capacity is high, because its traditional spraying or coating process fill
It is common to adorn effect, alternative less and single effect, and lack fashion beauty using universal caused aestheticly tired for many years
It sees, high-end and atmospheric surface decoration effect can not show a candle to the surface tactile sensation effect of glass or ceramic material shell；In addition plastic cement sheet
Body hardness only has 1H or so, is far below glass or ceramics 7-9H or more, easily leads in the daily use process of 3C electronic equipment
Cause is scratched, is worn, falling paint, thus the decorative effect of injured surface, therefore overall effect is novel much worse than fashion, fashionable appearance
Glass and ceramics, and give the cheap impression of low side, it cannot achieve the production and application of high added value.
The wireless network of 3C electronic product has developed to the 5G epoch, although millimeter wave transmission speed is fast, because wavelength is short, and electricity
Magnetic wave diffracting power is poor, although plastic material is small on the influence of 5G wireless signal, 5G signal is very sensitive to aerial position, in order to
Meet 5G demand signals, the wireless transmission of high frequency millimeter wave need to increase antenna amount to improve performance.Each traditional antenna is at least
Several millimeters of space is needed, 4 × 4mimo antenna then needs 10mm × 10mm area, and 8 × 8 array antenna space required is bigger, but
Because plastic cement products internal structures is complicated, component is various, on product for 5G antenna structure and design upper space it is extremely limited and
Scrappy dispersion, it is difficult to meet the needs of coherent large area of 5G antenna designs in interiors of products；
5G antenna is designed in product surface simultaneously, the realization effect of incrustation is not only seriously limited, gives low grade
Feeling, while colliding in routine use and falling easily caused in tumble injury the antenna under product surface decorative layer damage and
Cause product thoroughly to damage, brings great challenge to the design of 3C electronic product 5G signal antenna, it is difficult to meet 5G wireless network
The demand of network.
Summary of the invention
For overcome the deficiencies in the prior art, it is an object of the present invention to provide one kind do not influence 5G wireless signal,
It can be realized the plastic casing structure of required by electronic product 5G wireless antenna function simultaneously, it manufactures day inside plastic shell
Line solves the electronic product assembling structure surface of scrappy dispersion in traditional 3C electric product plastic rubber shell without enough spatial designs
5G signal antenna, and when antenna is accomplished plastic shell surface, influences product appearance decorative effect, and easily damages and cause
Product integrally damages and is difficult to the industry problems repaired.Further, it has glass or a ceramic appearance, frivolous fashion,
Novel appearance.Further, it also has the characteristics that preventing injury from fall waterproof.
It is a further object to provide a kind of preparation methods of plastic casing structure.
An object of the present invention adopts the following technical scheme that realization:
A kind of plastic casing structure, which is characterized in that including plastic shell, fit on the inner surface of plastic shell
PET composite decoration diaphragm, the PET composite decoration diaphragm includes PET base material, and the PET base material is bonded with plastic shell
Side is binding face, and the side of the separate plastic shell of the PET base material is decorative cover；On the decorative cover of the PET base material according to
It is secondary to be equipped with ink printed layer, UV lines layer, optical coatings；The optical coatings of the PET composite decoration diaphragm are equipped with LDS
Antenna.
Further, the region also injection molding on the decorative cover of the PET composite decoration diaphragm in addition to LDS antenna contacts
There is electric product plastic rubber shell functional structure.
Further, the outer peripheral edge of the plastic casing structure is additionally provided with a circle sealing structure.
The second object of the present invention adopts the following technical scheme that realization:
A kind of preparation method of plastic casing structure characterized by comprising
Plastic shell preparation process: one piece of plastic shell is provided；
PET composite decoration diaphragm preparation process: the PET composite decoration diaphragm includes PET base material, the PET base material
The side being bonded with plastic shell is binding face, and the side of the separate plastic shell of the PET base material is decorative cover；The PET
Ink printed layer, UV lines layer, optical coatings are successively arranged on the decorative cover of substrate；
LDS antenna making step: using the molding method of laser direct activation at one of the PET composite decoration diaphragm
Production obtains LDS antenna on surface；
Laminating step: another surface opposite with LDS antenna of PET composite decoration diaphragm is fitted in using laminator
On the inner surface of plastic shell.
Further, in plastic shell preparation process, plastic shell the production method is as follows:
Injection step: injection mold being installed to compression injection molding machine, carries out compression injection molding, and when molding will be corresponding on mold
The type chamber of product is molded to 1.3-1.6 times of plastic cement products volume, and injects 1.05 times -1.2 times of plastic cement products volume of melting
Plastic material to type chamber, then using the compression function of compression injection molding machine, pass through injection molding machine clamping pressure extrusion pressing type chamber and carry out two
Type chamber is thoroughly molded to 100%, plastic material is squeezed full entire type chamber and is forced into extra plastic material by secondary molding
At material overflow port in mold, molding plastic cement products are obtained；
Cure process step: cure process is carried out using surface of the chemical intensification treatment to plastic cement products, selects UV light solid
Change acrylic ester type forced fluid or organic siliconresin type forced fluid and forms a layer thickness in surface of plastic product as 15-20um hardening
Layer, obtains plastic shell.
Further, in plastic shell preparation process, one or both of plastic material PMMA, PC mixing.
Further, in plastic shell preparation process, organic siliconresin type forced fluid uses dipping process, dip-coating speed 3-
10M/S, baking temperature is 60 DEG C, baking time is to solidify under 50min baking condition；Acrylate forced fluid is using spraying work
Skill, in 900-1100mj/cm2UV light under the conditions of solidify.
Further, in PET composite decoration diaphragm preparation process, detailed process is as follows: PET base material decorative cover successively
The surface recombination for carrying out ink printing, the transfer of UV optical effects and optical coating background color decorates treatment process；Then to PET base material
Binding face carry out the coating of OCA optical cement, PET base material surface adhere to one layer of OCA optical cement.
Further, in LDS antenna making step, the molding method of laser direct activation specifically includes the following steps:
LDS coating making step: the LDS coating containing metal component is sprayed or is printed on the PET composite decoration diaphragm
Separate plastic shell surface on, obtain the LDS coating with a thickness of 10 microns to 300 microns；
Laser activation step: laser activation processing is carried out to LDS coating, since the metal component in LDS coating is activated
To form one layer of metal layer on the surface of LDS coating；
Metallization process step: after completing laser activation, day is carried out to LDS coating using chemical plating or the mode of plating
Line metallization process forms the coat of metal with a thickness of 0.008mm-0.30mm；
Nickel Plating Treatment step: carrying out Nickel Plating Treatment again on the coat of metal, forms the plating with a thickness of 0.002mm-0.004mm
Nickel layer.
Further, after completing Nickel Plating Treatment, carry out drying and processing, and according to product or customer requirement, it is selective into
Row secondary spraying covering is processed, to cover metal antenna, spraying with a thickness of priming paint 0.004-0.005mm, finishing coat 0.008-
0.02mm after spraying, completes the processing of LDS antenna.
Further, after completing laminating step, it is in-molded to carry out secondary plastic cement: in PET composite decoration diaphragm far from modeling
Region injection molding on the surface of glue shell in addition to LDS antenna contacts goes out electric product plastic rubber shell functional structure.
Further, after forming electric product plastic rubber shell functional structure, using liquid-state silicon gel moulding process, in plastic casing
The one circle sealing structure of outer peripheral edge molding of structure.
The beneficial effects of the present invention are:
1, the present invention includes plastic shell, fits in PET composite decoration diaphragm on the inner surface of plastic shell, described
The surface of the separate plastic shell of PET composite decoration diaphragm is equipped with LDS antenna；It manufactures antenna inside plastic shell, solution
The electronic product assembling structure surface of scrappy dispersion in traditional 3C electric product plastic rubber shell of having determined is believed without enough spatial design 5G
Number antenna, and when antenna is accomplished plastic shell surface, influences product appearance decorative effect, and easily damages and lead to product
Entirety is damaged and is difficult to the industry problems repaired.
2, PET composite decoration diaphragm of the invention far from the region on the surface of plastic shell in addition to LDS antenna contacts also
It is injection molded with electric product plastic rubber shell functional structure, electric product plastic rubber shell functional structure is integrally wrapped up LDS antenna, realized
The water proof and dust proof shatter-resistant of LDS antenna；In addition, the outer peripheral edge of plastic casing structure is additionally provided with a circle sealing structure, make electronic product
Shell realizes the water proof and dust proof of complete machine by assembly sealing means；Therefore, the present invention realizes the damage of water proof and dust proof preventing injury from fall, effect
Fruit stabilization and long-lived 3C electronic product and water proof and dust proof metalized antenna.
3, the present invention realizes plastic surface and imitates 3D glass and ceramic appearance, realizes plastic surface gorgeous outer
Decorative effect is seen, the limitation of spraying or plated film decoration technology can only be used by breaking traditional plastic surface, be realized outside plastic surface
See gorgeous, the novel decoration of fashion makes plastic surface thoroughly get rid of the cheap effect of low side.
4, the present invention realizes plastic surface close to glass surface using the application of compression injection molding and Surface hardening treatment
The surface hardness of 6-7H solves the problems, such as plastic surface 1H or so far below glass surface hardness, make plastic surface scratch-resistant,
The effect of rub resistance.
5, the present invention realizes glass effects in plastic surface, and while reach high rigidity, avoids using glass and pottery
Ceramic shell easily impacts the important material defect of fragmentation intolerant to falling, and can be suitble to all kinds of complicated harsh environments, meet three proofings neck
Use environment when domain, wearable field and daily complexity, is widely used in all kinds of 3C electronic products.
6, the present invention uses the compound dress of PET composite decoration diaphragm and plastic cement and UV optical effects, optically coated combination
Decorations technology realizes high-end and atmospheric exterior decorative effect, realizes and shows different lines under different visible angles and illumination
Effect is managed, more victory glass and ceramic appearance.
7, the UV optical effects in PET base material of the present invention can be changed according to client and appearance Demand Design, and lines type is rich
Rich multiplicity, and optical coating color abundant can be provided and arranged in pairs or groups, meet the various colors collocation of designer and consumer
Demand and personalized customization.
8, the present invention passes through the easy processing characteristic of plastic structure, is directly realized by the electronic product that glass and ceramics are difficult to realize
Internal sophisticated functions structure, while using structures such as its button bit and positioning bars, it realizes detachable characteristic easy to maintain, reduces product
Tear the difficulty of machine maintenance open, be convenient for after-sales service, and consumer can self-changeable, while reducing client's maintenance cost after sale,
It realizes personalized high-end customization, realizes the high added value of product.
9, the present invention, in plastic casing center of inside, realizes the nothing of water proof and dust proof while realizing 5G signal antenna
Line charge electric coil meets the demand of wireless charging function, and antenna integrally wraps up and is easy to export coil heat inside housings,
And it is closer from appearance, it is conducive to outside calorie spread to product.
10, the silica gel one waterproof construction in product of the present invention, it is frivolous, the gorgeous effect of appearance not influencing product fashion
Meanwhile making plastic shell by way of assembly sealing, 3C electronic product complete machine is realized, has excellent dust-proof of IP68 or more
Waterproof performance.
11, the appearance of the invention in the glass for making plastic material have both top grade and ceramics, 6H high rigidity damage resistant rub resistance,
And under the premise of complicated antenna and Complex Product Structure is readily produced assembly, make preparation process is relatively easy to be readily produced, it is good
Product rate is high and at low cost, is easy to scale of mass production and popularizes.
Detailed description of the invention
Fig. 1 is the perspective view of plastic casing structure.
Fig. 2 is the perspective view of another angle of plastic casing structure.
Fig. 3 is the overlooking structure diagram of plastic casing structure.
Fig. 4 is A-A in Fig. 3 to cut-away view.
Fig. 5 is the enlarged diagram in the portion C in Fig. 4.
Fig. 6 is the schematic diagram of the plastic shell after the compression injection molding of this hair.
Fig. 7 is the schematic diagram that PET base material of the present invention carries out the PET composite decoration diaphragm after decoration processing step.
Fig. 8 is the schematic diagram of PET composite decoration diaphragm of the present invention after hot bending processing step.
Fig. 9 is the schematic diagram for the product that the present invention carries out after the activation of LDS antenna and antenna metallization.
Figure 10 is the schematic diagram of laminating step of the present invention.
Figure 11 is the schematic diagram of the product of present invention molding electric product plastic rubber shell functional structure.
Figure 12 is the schematic diagram of the product of forming seal structure of the present invention.
Figure 13 is the schematic diagram for the final products that CNC of the present invention is processed.
Wherein, 10, plastic shell；20, PET composite decoration diaphragm；30, LDS antenna；40, electric product plastic rubber shell function
Structure；50, sealing structure；60, head bore is imaged；70, flash lamp aperture.
Specific embodiment mode
In the following, being described further in conjunction with specific embodiment to the present invention, it should be noted that is do not collided
Under the premise of, new embodiment can be formed between various embodiments described below or between each technical characteristic in any combination.
A kind of plastic casing structure including plastic shell, fits in PET composite decoration on the inner surface of plastic shell
Diaphragm, the PET composite decoration diaphragm includes PET base material, and the side of the PET base material being bonded with plastic shell is fitting
Face, the side of the separate plastic shell of the PET base material are decorative cover；Ink is successively arranged on the decorative cover of the PET base material
Printing layer, UV lines layer, optical coatings；The optical coatings of the PET composite decoration diaphragm are equipped with LDS antenna.
Area as the mode that further carries out, on the decorative cover of the PET composite decoration diaphragm in addition to LDS antenna contacts
Domain is also injection molded with electric product plastic rubber shell functional structure.
As the mode that further carries out, the outer peripheral edge of the plastic casing structure is additionally provided with a circle sealing structure.
A kind of preparation method of plastic casing structure, comprising:
Plastic shell preparation process: one piece of plastic shell is provided；
PET composite decoration diaphragm preparation process: the PET composite decoration diaphragm includes PET base material, the PET base material
The side being bonded with plastic shell is binding face, and the side of the separate plastic shell of the PET base material is decorative cover；The PET
Ink printed layer, UV lines layer, optical coatings are successively arranged on the decorative cover of substrate；
LDS antenna making step: using the molding method of laser direct activation at one of the PET composite decoration diaphragm
Production obtains LDS antenna on surface；
Laminating step: another surface opposite with LDS antenna of PET composite decoration diaphragm is fitted in using laminator
On the inner surface of plastic shell.
As the mode that further carries out, in plastic shell preparation process, plastic shell the production method is as follows:
Injection step: injection mold being installed to compression injection molding machine, carries out compression injection molding, and when molding will be corresponding on mold
The type chamber of product is molded to 1.3-1.6 times of plastic cement products volume, and injects 1.05 times -1.2 times of plastic cement products volume of melting
Plastic material to type chamber, then using the compression function of compression injection molding machine, pass through injection molding machine clamping pressure extrusion pressing type chamber and carry out two
Type chamber is thoroughly molded to 100%, plastic material is squeezed full entire type chamber and is forced into extra plastic material by secondary molding
At material overflow port in mold, molding plastic cement products are obtained；
Cure process step: cure process is carried out using surface of the chemical intensification treatment to plastic cement products, selects UV light solid
Change acrylic ester type forced fluid or organic siliconresin type forced fluid and forms a layer thickness in surface of plastic product as 15-20um hardening
Layer, obtains plastic shell.
As the mode that further carries out, in plastic shell preparation process, one of plastic material PMMA, PC or two
Kind mixing.
As the mode that further carries out, in plastic shell preparation process, organic siliconresin type forced fluid uses dip-coating work
Skill, dip-coating speed 3-10M/S, baking temperature is 60 DEG C, baking time is to solidify under 50min baking condition；Acrylate is strong
Change liquid and use spraying process, in 900-1100mj/cm2UV light under the conditions of solidify.
As the mode that further carries out, in PET composite decoration diaphragm preparation process, detailed process is as follows: in PET base material
Decorative cover successively carry out ink printing, UV optical effects transfer and optical coating background color surface recombination decoration treatment process；
Then the coating of OCA optical cement is carried out to the binding face of PET base material, adheres to one layer of OCA optical cement on PET base material surface.
As the mode that further carries out, in LDS antenna making step, the molding method of laser direct activation is specifically included
Following steps:
LDS coating making step: the LDS coating containing metal component is sprayed or is printed on the PET composite decoration diaphragm
Separate plastic shell surface on, obtain the LDS coating with a thickness of 10 microns to 300 microns；
Laser activation step: laser activation processing is carried out to LDS coating, since the metal component in LDS coating is activated
To form one layer of metal layer on the surface of LDS coating；
Metallization process step: after completing laser activation, day is carried out to LDS coating using chemical plating or the mode of plating
Line metallization process forms the coat of metal with a thickness of 0.008mm-0.30mm；
Nickel Plating Treatment step: carrying out Nickel Plating Treatment again on the coat of metal, forms the plating with a thickness of 0.002mm-0.004mm
Nickel layer.
As the mode that further carries out, after completing Nickel Plating Treatment, drying and processing is carried out, and want according to product or client
Ask, selective carry out secondary spraying covering processing, to cover metal antenna, spraying with a thickness of priming paint 0.004-0.005mm,
Finishing coat 0.008-0.02mm after spraying, completes the processing of LDS antenna.
It is in-molded to carry out secondary plastic cement: in the compound dress of PET after completing laminating step as the mode that further carries out
It adorns diaphragm and goes out electric product plastic rubber shell functional structure far from injection molding on the surface of plastic shell.
As mode is further carried out, after having formed electric product plastic rubber shell functional structure, formed using liquid-state silicon gel
Technique, the one circle sealing structure of molding in the outer peripheral edge of plastic casing structure.
Specific embodiment of the present invention when following, used raw material, equipment etc. remove special limit in the following embodiments
It can be obtained by buying pattern outside fixed.
Embodiment 1:
Referring to Fig.1-5, a kind of plastic casing structure including plastic shell 10, fits in the inner surface of plastic shell 10
On PET composite decoration diaphragm 20, the side being bonded with plastic shell of the PET composite decoration diaphragm is binding face, described
The side of the separate plastic shell of PET composite decoration diaphragm is decorative cover；It is set on the decorative cover of the PET composite decoration diaphragm 20
There is LDS antenna 30.Region on the decorative cover of the PET composite decoration diaphragm 20 in addition to LDS antenna contacts is also injection molded with
Electric product plastic rubber shell functional structure 40.The outer peripheral edge of the plastic casing structure is additionally provided with a circle sealing structure 50.
Referring to Fig. 6-13, a kind of preparation method of plastic casing structure, comprising the following steps:
1) plastic shell preparation process: one piece of plastic shell is provided；
In the plastic shell preparation process of the present embodiment, as a kind of preferred embodiment, the production side of plastic shell
Method is as follows:
Injection step: referring to Fig. 6, compression injection mold being installed to compression injection molding machine, carries out compression injection molding, when molding
The type chamber of corresponding product on mold is molded to 1.3-1.6 times of plastic cement products volume, and injects 1.05 times of plastic cement products volume-
The plastic material of 1.2 times of melting is squeezed to type chamber, then the compression function of use compression injection molding machine by injection molding machine clamping pressure
Type chamber carries out secondary mould closing, and type chamber is thoroughly molded to 100%, plastic material is squeezed full entire type chamber and by extra plastic cement
Raw material is forced at the material overflow port in mold, obtains molding plastic cement products；It designs, can make in molding plastic cement products in this way
Densification consolidation in portion's while by promoting injection molding product density to increase product surface hardness, eliminates material interiors of products
Internal stress reduces the deformation of product；
In the injection step of the present embodiment, as a kind of preferred embodiment, plastic material uses high rigidity PMMA, with
Melt plastic cement filling and the promotion of surface hardness when conducive to compression injection molding；
In the injection step of the present embodiment, as a kind of preferred embodiment, for 5 cun or so of product, compression note
The tonnage of molding machine pressure generally requires 100 tons or more, 100 ° of forming temperature or more, just product can be made to be compressed to 0.7mm thickness
Surface hardness is promoted simultaneously；
In the injection step of the present embodiment, as a kind of preferred embodiment, because injection area is big, product thickness is thin,
Therefore the structure of product is designed to simple plane or 3D curved surface as far as possible, adds hole location less as far as possible, dog-ear, muscle position etc. is unfavorable for
The structure of plastic material filling；
In the injection step of the present embodiment, as a kind of preferred embodiment, hardness generally need to be extremely after compression has been molded
1.5H-2H or more, in favor of subsequent curing processing promotion hardness to 6H or more.
In the injection step of the present embodiment, as a kind of preferred embodiment, this technique is according to product and integrated artistic
It is required that thickness is excessively thin as area is excessive, can be replaced with PMMA+PC composite plate heat pressing process.
Cure process step: cure process is carried out using surface of the chemical intensification treatment to plastic cement products, selects UV light solid
Change acrylic ester type forced fluid or organic siliconresin type forced fluid and forms a layer thickness in surface of plastic product as 15-20um hardening
Layer, obtains plastic shell.
In the cure process step of the present embodiment, as further embodiment, the forced fluid of organic siliconresin is general
Using dipping process, dip-coating speed 3-10M/S solidifies under the baking condition of 60 DEG C of * 50min；Acrylate forced fluid is general
Using spraying process, in 900-1100mj/cm2UV light under the conditions of solidify.
In the cure process step of the present embodiment, as further embodiment, cure process only handles plastic shell
Appearance in order to avoid being affected to product overall flexibility, while promoting the bond properties at the back side.
In the cure process step of the present embodiment, as further embodiment, the plastic shell complete to cure process
Protective film is sticked on surface, in order to avoid scuffing production is touched when the secondary plastic cement of rear process is in-molded and in each process turnover and process
Product surface.The protective film of product surface pasted after product, surface is not allow for fold, bubble, concave-convex the problems such as rising and falling appearance,
It can be used make-up machine auxiliary fitting to improve fitting quality.
2) PET composite decoration diaphragm preparation process: the PET composite decoration diaphragm includes PET base material, the PET base material
The side being bonded with plastic shell be binding face, the side of separate the plastic shell of the PET base material is decorative cover；It is described
Ink printed layer, UV lines layer, optical coatings are successively arranged on the decorative cover of PET base material；
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, referring to Fig. 7, PET
Detailed process is as follows for composite decoration diaphragm preparation process: successively carrying out ink printing, UV optical effects in the decorative cover of PET base material
The surface recombination of transfer and optical coating background color decorates treatment process；Then the painting of OCA optical cement is carried out to the binding face of PET base material
Cloth adheres to one layer of OCA optical cement on PET base material surface.
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, PET base material is pasted
Conjunction face is pre-processed, and carries out composite decoration processing to the diaphragm back side so as to subsequent；
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, the ruler of PET base material
It is very little to be greater than 4-8 times of product generally in 250mm × 350mm or more, within thickness 0.15mm, by subsequent cutting, it can meet multiple
The use of product, to promote processing efficiency and reduce cost；
It is good in preprocessing as further embodiment in the PET composite decoration diaphragm preparation process of the present embodiment
The decorative cover of PET base material carries out the processing of the decorations such as ink printing, UV transfer, optical coating, realizes the novel surface of fashionable appearance
Effect；
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, the dress of PET thin slice
Decorations processing can repeatedly be printed, be transferred, the composite decorations processing such as plated film, according to selected by required appearance, but it is general extremely
4 layers of decorative layer are needed less, specific as follows:
First layer decorative layer is the decorative processing of appearance pattern, is typically chosen ink printing or silk screen printing process, is producing
One layer pattern of product surface printing or text, 3C electronic product are generally the mark such as LOGO and mating model, and print thickness is at 6 microns
Left and right, printing net selection need 460 mesh or more；
Second layer decoration is optical effects processing, using UV texture transfer printing process, specifically by designed high density line
Reason is machined on UV roller mould, and UV glue is then transferred to PET by UV texture mold by the fine texture on mold
It on sheet material, and is processed by UV photocuring, the UV lines of stable transparent is processed in PET base material, UV thickness degree is generally 20
Micron；PET base material after transfer processing, under different irradiation angles and intensity of illumination, UV texture can reflect different textures
Pattern generally has CD line, grating line, the multiple choices such as milled carbon fiber can also be according to production to show exclusive lines effect
Product demand carries out individually designed and change, the optical grains of preferred grating line in the present embodiment；
Third layer decoration is the processing of product appearance background color, by optical coating technique, makes the upper one layer of background color of product attachment,
Visible bottom colors i.e. in appearance, one layer depth of vacuum coating blue, thickness generally exist such as on the UV transfer printing layer of PET base material
6 microns, various colors multiplicity is without limitation；
The 4th layer of protective layer as three first layers usually prints one layer of protection ink, prevents subsequent coating or viscous
Mixture corrosion or the visible background color coating of damage appearance or UV transfer lines, and general 6 microns of thickness, the present embodiment is because needing
It realizes the thicker aerial coil of the coat of metal, and avoids influencing decorative layer effect in charging process, therefore need 15 microns or more.
Decorative layer is exactly above four layers substantially, but can use other sprayings or plating according to the demand of product perhaps technique
Film mode substitutes third layer background color layer, or increases other optic metachromatic coating process before Tipple Bottom color film plating layer, to realize
Different color, discoloration, light refraction effect, achieve the effect that composite decoration；
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, the 4th layer can also be with
It is replaced with other protective coatings or protective film technology generations, such as increases the glass for strengthening PET base material integral strength and toughness on it
Fine plate layer plays the role of being bonded with glass-fiber-plate, then paste layer of glass fiber plate with make-up machine that is, in one layer of UV glue of the 4th layer of upper coating
Layer, thickness is generally at 50-100 microns.
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, to PET base material
Binding face is coated one layer of OCA optical cement, and thickness is played and produced with perspex product or transparent glass etc. within 0.02mm
The light transmittance of the effect of product close adhesion, optical cement need to be greater than plastic cement or glass, generally 96% or more, in order to avoid influence visual
Effect；Then on the surface of OCA optical cement, it is bonded one layer of release film being easily peeled off, plays protection binding face and optical cement
Effect, and in bonding process, protective film is easily peeled off so as to the effect of processing.
In the PET composite decoration diaphragm preparation process of the present embodiment, as further embodiment, referring to Fig. 8, according to
The difference of product 3D structure, it is selective that hot bending processing is carried out to PET base material, in favor of fitting closely for complicated looking products；
It need to be required according to the size and technique of product, before hot bending processing by large area as further embodiment
PET base material cut into meet single product processing needed for size, with improve after process process precision；
As further embodiment, because the present embodiment product is the 3D curved surface of four sides bending, in rear process and product
It is also easy to produce bubble when fitting, wrinkle, deviation etc. is bad, it is therefore desirable to first hot bending processing is carried out to PET base material, in favor of rear process
It is bonded processing with 3D glass, to improve integrated artistic yield.And for plane, two sides bending or the simple product of shape,
It can according to the technological requirements, remove the hot bending process processing of PET base material from；
As further embodiment, before hot bending processing, the appearance of PET base material should adhere to protective film layer, to avoid
Bad order caused by scald, scratch, abrasion of appearance etc.；
As further embodiment, the temperature of hot bending processing is generally 100 DEG C -150 DEG C, so that PET base material is soft
Change, hot bending processing after, the decorative layer of PET base material be not allow for changing colour, cracking, fall off etc. it is bad, in order to avoid influence appearance.
3) LDS antenna making step: referring to Fig. 9, using the molding method of laser direct activation in the PET composite decoration
Production obtains LDS antenna on one surface of diaphragm；
In the LDS antenna making step of the present embodiment, as further embodiment, the molding side of laser direct activation
Method specifically includes the following steps:
LDS coating making step: the LDS coating containing metal component is sprayed or is printed on the PET composite decoration diaphragm
Separate plastic shell surface on, obtain the LDS coating with a thickness of 10 microns to 300 microns；Because of Wireless charging coil coating
It is thicker, avoid the factors such as heat in charging from influencing surface decoration effect, so base of the present embodiment in the protective layer of PET base material
On plinth, increasing layer 5 is LSD coating, to avoid appearance is influenced in long-time service；
Laser activation step: laser activation processing is carried out to LDS coating, since the metal component in LDS coating is activated
To form one layer of metal layer on the surface of LDS coating；
Metallization process step: after completing laser activation, day is carried out to LDS coating using chemical plating or the mode of plating
Line metallization process forms the coat of metal with a thickness of 0.008mm-0.30mm；
Nickel Plating Treatment step: carrying out Nickel Plating Treatment again on the coat of metal, forms the plating with a thickness of 0.002mm-0.004mm
Nickel layer.
In the LDS coating making step of the present embodiment, as further embodiment, the LDS containing metal component is applied
Material spraying or be printed in the 4th layer of ink protective layer of the PET composite decoration diaphragm, allow to carry out laser activation and
Antenna metallization processing, according to antenna requirement difference, LDS coating layer thickness is generally 10 microns to 300 microns.
In the laser activation step of the present embodiment, as further embodiment, according to design of product function 5G signal,
The signal antennas such as WIFI, bluetooth, Wireless charging coil shape and size, and design the peace required with laser processing is processed
Fill fixed fixture；
In the present embodiment, both ends are 5G wireless signal, WIFI, Bluetooth antenna to product end to end, and middle part is used in wireless charging
Power receiving coil generates electric current by the power transmission coil on wireless charging base with electromagnetic induction method, to realize 3C electronic product
Wireless charging function.
In the present embodiment, using laser processing machine, laser processing jig is mounted on machine, and product is accurate
Be mounted on processing jig, by designed antenna size, on the LDS dope layer at the 3D glass product back side, carry out laser
Activation is processed, and the metal composite in LDS coating is activated, and encloses very thin metal layer, in coating surface so as to further
Metallization covering processing.
In the present embodiment, for the antenna of wireless charging class, because of antenna requirement difference, thickness of coating generally 50 microns-
300 micron ranges can select plating mode, accelerate the speed and production efficiency of antenna metallization.
It in the metallization process step of the present embodiment, as further embodiment, is processed, is being changed using electroless copper
During learning plating, so that discrete copper ion is become the seed in medical fluid, be reduced into copper and be sticked together；Copper facing need to carry out two
Secondary processing integrally carries out electroless copper processing to all antennas for the first time, and thickness of coating is generally 0.008mm-0.30mm, and second
Secondary copper facing need to cover the antenna of not wireless charge coil, individually copper facing be carried out to Wireless charging coil, using plating
Mode continues copper facing on Wireless charging coil surface, and at least 50 microns or more of thickness, the thickness of electro-coppering is preferred in the present embodiment
It is 80 microns；
In the Nickel Plating Treatment step of the present embodiment, as further embodiment, in copper-plated metal copper coating twice
On, then the Nickel Plating Treatment of all antennas and Wireless charging coil is carried out, general thickness is 2 microns -4 microns, plays protection antenna
Effect.
Coil direct current need to be met for the Wireless charging coil part after metallization as further embodiment
<0.5 Ω is hindered, value>9 inductance L>9uH, Q, work long hours the t=16 DEG C of@2.5W of Δ that heat up, 3 hours test requests, to meet
The demand of wireless charging function and efficiency；
The different coats of metal can choose according to different antenna function requirements as further embodiment,
It can choose gold-plated or silver-colored, the effect of antenna promoted, to meet the needs of different electronic products.
As further embodiment, the antenna product for finally having plated metal carries out drying processing, and according to product or
Customer requirement, the secondary spraying covering processing of selective carry out, to cover metal antenna, it is micro- that the thickness of spraying is generally priming paint 4
- 5 microns of rice, is finally completed the processing of LDS antenna by 8 microns -20 microns of finishing coat, present case because subsequent there are also secondary in-mould injection,
LDS antenna part can be covered and protect, therefore without spray process.
As further embodiment, when Antenna Design, minimum wire is 0.15 millimeter, and the spacing of route is minimum
0.5 millimeter, route to product edge at least needs 1 millimeter of distance, in favor of the processing of LDS technique；
As further embodiment, LDS antenna on product, by the antenna contacts on product, with corresponding dress
Metal clips Interference contact on the circuit board matched and link together, realize electronic product 5G signal antenna, Bluetooth antenna, WIFI
Antenna, the antenna function of wireless charging.
4) laminating step: referring to Fig.1 0, using laminator by the opposite with LDS antenna another of PET composite decoration diaphragm
A surface fits on the inner surface of plastic shell, realizes high rigidity and the novel 3D curved surface appearance of fashion；
In the laminating step of the present embodiment, as further embodiment, fitting need to use joint tool pair when processing
PMMA curved surface shell product and diaphragm carry out precise positioning, are bonded effect yield to be promoted；
In the laminating step of the present embodiment, as further embodiment, after the completion of fitting, shell edge and PET base
Edge edge, is not allow for deviation, and shell edge and PET base material edge offset should be less than 50 microns；
In the laminating step of the present embodiment, as further embodiment, such as PET base material and PMMA curved surface shell shape
Complexity, need to carry out it is vacuum abutted, in order to avoid because it is complex-shaped cause gas bubbles left in binding face due to cause it is bad；
In the laminating step of the present embodiment, as further embodiment, as there are gas for portioned product during being bonded
Bubble, can carry out extrusion bubble with defoaming machine, to promote attaching process yield and reduce cost.
5) electric product plastic rubber shell functional structure making step: referring to Fig.1 1, after completing laminating step, carry out secondary plastic cement
In-molded: the region injection molding on surface of the PET composite decoration diaphragm far from plastic shell in addition to LDS antenna contacts goes out
Electric product plastic rubber shell functional structure.
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, two
Before secondary plastic cement is in-molded, binder primary coat processing need to be carried out to the curable shell product back side 3D, to guarantee and secondary plastic cement knot
Binding force after structure integrated molding；
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, bonding
Agent can be used silk-screen or the automatic brush coating of dispenser to the PET composite decoration film on piece at the product back side, and according to binder technique
It is required that carrying out baking processing；
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, to subtract
Deformation and internal stress residue when small post forming are needed before the forming to PMMA curved surface the pre-heat treatment, 80 DEG C of general preheating temperature
Within, time 3-5 minute；
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, at
On the mode of the product appearance side of pattern tool, the part with product appearance face contact need to be made into elastic mold insert, set in mold insert bottom
Spring is counted, withstands product to realize flexible pressure.Larger for product surrounding side wall slope, front is difficult to the product to press,
4 surface elastic sliding blocks need to be designed to press to product surrounding side, in order to avoid weigh product when in-molded wounded；
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, for into
Weighing wounded when one step reduces molding deforms, and scratch etc. is bad, can adhere on the mold insert contacted with PMMA curved face product surface
One layer of silica gel or flexible material, to reduce undesirable generation, surface hardness need to be in 70A or less；
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, pass through
Secondary plastic molding complexity plastic structure required for each function and assembles button bit inside molding electronic product casing, it is secondary at
The plastic cement integral thickness of type structure should be at 0.5 millimeter or more, and the plastic cement button bit on product is typically designed in product inside bottom,
Button bit is fastened with corresponding electric product plastic rubber shell functional parts, and is positioned by positioning bar and corresponding housing, and realization can
Disassembling function；
It is secondary as further embodiment in the electric product plastic rubber shell functional structure making step of the present embodiment
Molding material is generally PC, PC+ABS, PEEK material, and selection is avoided to shrink larger or sensitive to ambient humidity modeling as far as possible
Glue material, such as hygroscopic PA material, in order to avoid deformation and dimension overproof caused by the subsequent variation because of Material shrinkage；
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, PET base
Metal antenna electric shock corresponding position, need to do clearance structure, so that the shrapnel contact on circuit board can directly be contacted with antenna on material.
In the electric product plastic rubber shell functional structure making step of the present embodiment, as further embodiment, producing
Product complex contour or the plastic structure of post forming are complicated, and when be difficult with post forming in mould, it also can be selected first single
Complicated plastic structure inside only injection molding, then this process is realized by the assembling mode of point glue laminating, it herein can be according to reality
Border situation is selected, and is not limited.But it if choosing assembles the scheme of internal plastic structure, then need to be formed together with rear process silica gel
It completes together, then overall package conforms on PMMA curved surface shell.
6) sealing structure making step: referring to Fig.1 2, after having formed electric product plastic rubber shell functional structure, use liquid-state silicon
Gum forming technique, the one circle sealing structure of molding in the outer peripheral edge of plastic casing structure, to realize water-proof function.
In the sealing structure making step of the present embodiment, as further embodiment, using silica gel material, in PMMA
The inside housing bottom of curved face product back side border, the one relatively thin double-deck button type sealing structure of circle of molding, by with it is corresponding electric
Sub- product plastic casing functional parts front interference pressing, reaches sealing effect, to realize the waterproof function of electronic product complete machine
Energy；
In the present embodiment, such silica gel waterproof construction, glue position thickness at least needs 0.25 millimeter or more, while because of its silica gel knot
Structure is relatively thin, is generally formed using liquid-state silicon gel, or individually solid-state silica gel it is hot-forming+mode of bonding assembling realizes, silica gel
Hardness is generally between 40A-60A；
In the sealing structure making step of the present embodiment, as further embodiment, the protrusion of silica gel sealing structure
Part need to be designed to acute angle within 40 °, within height 0.2mm, and be the protrusion sealing of 2 circles or more.It designs, has in this way
Excellent waterproof effect.
In the sealing structure making step of the present embodiment, as further embodiment, before silica gel molding, outside product
The thickness direction of shell that is, on direction of exerting pressure, is not allow for the hanging structures such as side opening, if any this class formation, need to after silica gel molding,
It is processed and is realized by CNC, or using the hanging structure on filler filling mold sealing direction of exerting pressure, to avoid product pressure
It collapses, deform, the problems such as silica gel excessive glue is uncontrollable；
In the sealing structure making step of the present embodiment, as further embodiment, in corresponding silica gel molding, mould
Tool needs the plastic structure part and its corresponding mold glue sealing structure part of sealing, need to be designed to front pressure sealing form,
Side or inclined-plane sealing are avoided as far as possible, while adhering to the flexible material such as silica gel on the mode for contacting pressure with product appearance as far as possible
Material can production and production yield with raising to reduce the difficulty of silica gel moulding process；
In the sealing structure making step of the present embodiment, as further embodiment, liquid-state silicon gel be can choose certainly
Viscous silica gel straight forming can also cooperate primer using non-tack silica gel according to product or process requirements, and
Baking processing is carried out by silane coupling agent requirement, is integrally formed with realizing.Solid-state silica gel directly uses non-tack silica gel；
In the sealing structure making step of the present embodiment, as further embodiment, when liquid-state silicon gel is integrally formed,
Forming temperature control is preferred within 150 DEG C, and before product is put into in-mold molding, Ying Jinhang the pre-heat treatment, preheating temperature
Generally between 70 DEG C -110 DEG C, with Reducing distortion and the bonding force of tack silica gel is promoted.
In the sealing structure making step of the present embodiment, as further embodiment, it can be used when silane coupling agent is handled
Automatic dispensing machine realizes automatic operation, to reduce cost of labor and raising efficiency.
As further embodiment, referring to Fig.1 3, to the PMMA curved surface shell that silica gel has formed, carry out CNC finishing
Work processes the through-holes such as product front and the camera shooting head bore of side, flash lamp aperture, power supply keyhole and the high electronics production of accuracy requirement
Product plastic casing functional structure；
As further embodiment, yield, the through-holes knots such as product front camera, flash lamp are processed to promote CNC
The small angle C on structure surface should use customized molding cutter time processing to realize, appearance surface chamfer is avoided size side and the depth occur
Different situation；
As further embodiment, this is last manufacturing procedure, because CNC manufacturing procedure excessively easily leads to fraction defective
It is larger, and good general does not share front all process steps processing cost to this process, leads to increased costs.Therefore the positive chamfering of product is removed
Outside, product surrounding and the processing of the CNC structure at the product back side, a CNC is completed the process as far as possible, in favor of process yields and cost
Control；
As further embodiment, the CNC of Surface Appearance is processed, high speed CNC should be selected to machine, cutter
Revolving speed should avoid the side wall knife mark of CNC cutting thicker or rough dull surface, to influence whole at 30000 revolutions per seconds or more
Visual effect.
Embodiment 2:
The characteristics of the present embodiment is: in plastic shell preparation process, plastic material is high rigidity PC or high rigidity PMMA+PC
Mixed modification high fluidity plastic material.
It is other same as Example 1.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. a kind of plastic casing structure, which is characterized in that including plastic shell, fit on the inner surface of plastic shell
PET composite decoration diaphragm, the PET composite decoration diaphragm includes PET base material, and the PET base material is bonded with plastic shell
Side is binding face, and the side of the separate plastic shell of the PET base material is decorative cover；On the decorative cover of the PET base material according to
It is secondary to be equipped with ink printed layer, UV lines layer, optical coatings；The optical coatings of the PET composite decoration diaphragm are equipped with LDS
Antenna.
2. plastic casing structure as described in claim 1, which is characterized in that on the decorative cover of the PET composite decoration diaphragm
Region in addition to LDS antenna contacts is also injection molded with electric product plastic rubber shell functional structure.
3. plastic casing structure as described in claim 1, which is characterized in that the outer peripheral edge of the plastic casing structure is additionally provided with
One circle sealing structure.
4. a kind of preparation method of plastic casing structure as claimed in any one of claims 1-3 characterized by comprising
Plastic shell preparation process: one piece of plastic shell is provided；
PET composite decoration diaphragm preparation process: the PET composite decoration diaphragm includes PET base material, the PET base material with modeling
The side of glue shell fitting is binding face, and the side of the separate plastic shell of the PET base material is decorative cover；The PET base material
Decorative cover on be successively arranged ink printed layer, UV lines layer, optical coatings；
LDS antenna making step: using the molding method of laser direct activation the PET composite decoration diaphragm optical coating
Production obtains LDS antenna on layer；
Laminating step: another surface opposite with LDS antenna of PET composite decoration diaphragm is fitted in by plastic cement using laminator
On the inner surface of shell.
5. the preparation method of plastic casing structure as claimed in claim 4, which is characterized in that in plastic shell preparation process,
Plastic shell the production method is as follows:
Injection step: injection mold being installed to compression injection molding machine, carries out compression injection molding, by corresponding product on mold when molding
Type chamber mold to 1.3-1.6 times of plastic cement products volume, and inject the modeling of 1.05 times -1.2 times of plastic cement products volume of melting
Glue material passes through injection molding machine clamping pressure extrusion pressing type chamber and carries out secondary conjunction to type chamber, then the compression function of use compression injection molding machine
Type chamber is thoroughly molded to 100%, plastic material is squeezed full entire type chamber and extra plastic material is forced into mold by mould
In material overflow port at, obtain molding plastic cement products；
Cure process step: cure process is carried out using surface of the chemical intensification treatment to plastic cement products, selects UV photocuring third
Olefin(e) acid ester type forced fluid or organic siliconresin type forced fluid obtain plastic shell in surface of plastic product one layer of hardened layer of formation.
6. the preparation method of plastic casing structure as claimed in claim 5, which is characterized in that in plastic shell preparation process,
Plastic material is one or both of PMMA, PC mixing；Organic siliconresin type forced fluid uses dipping process, dip-coating speed 3-
10M/S, baking temperature is 60 DEG C, baking time is to solidify under 50min baking condition；Acrylate forced fluid is using spraying work
Skill, in 900-1100mj/cm2UV light under the conditions of solidify.
7. the preparation method of plastic casing structure as claimed in claim 4, which is characterized in that PET composite decoration diaphragm prepares
In step, detailed process is as follows: successively carrying out ink printing, the transfer of UV optical effects and optics plating in the decorative cover of PET base material
The surface recombination of film background color decorates treatment process, respectively obtains ink printed layer, UV lines layer, optical coatings；Then to PET
The binding face of substrate carries out the coating of OCA optical cement, adheres to one layer of OCA optical cement on PET base material surface.
8. the preparation method of plastic casing structure as claimed in claim 4, which is characterized in that in LDS antenna making step, swash
The molding method of light direct activation specifically includes the following steps:
LDS coating making step: the LDS coating containing metal component is sprayed or is printed on the remote of the PET composite decoration diaphragm
From on the surface of plastic shell, LDS coating is obtained；
Laser activation step: to LDS coating carry out laser activation processing, due to the metal component in LDS coating be activated to
One layer of metal layer is formed on the surface of LDS coating；
Metallization process step: after completing laser activation, antenna gold is carried out to LDS coating using chemical plating or the mode of plating
Categoryization processing, forms the coat of metal；
Nickel Plating Treatment step: carrying out Nickel Plating Treatment again on the coat of metal, forms nickel coating.
9. the preparation method of plastic casing structure as claimed in claim 8, which is characterized in that after completing Nickel Plating Treatment, carry out
Drying and processing, and according to product or customer requirement, the secondary spraying covering processing of selective carry out is sprayed with covering metal antenna
Apply with a thickness of priming paint 0.004-0.005mm, finishing coat 0.008-0.02mm, after spraying, complete LDS antenna processing.
10. the preparation method of plastic casing structure as claimed in claim 4, which is characterized in that after completing laminating step, carry out
Secondary plastic cement is in-molded: the region note on surface of the PET composite decoration diaphragm far from plastic shell in addition to LDS antenna contacts
Modeling molds electric product plastic rubber shell functional structure；After forming electric product plastic rubber shell functional structure, formed using liquid-state silicon gel
Technique, the one circle sealing structure of molding in the outer peripheral edge of plastic casing structure.
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| CN112172371A (en) * | 2019-07-03 | 2021-01-05 | Oppo广东移动通信有限公司 | Structural member, method for manufacturing structural member, and electronic device |
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| CN110819973B (en) * | 2019-11-08 | 2021-11-16 | 上海安费诺永亿通讯电子有限公司 | External surface spraying process of external LDS antenna and chemical polishing solution thereof |
| CN111293417A (en) * | 2020-02-25 | 2020-06-16 | 西安易朴通讯技术有限公司 | Antenna, intelligent communication equipment and manufacturing method of antenna |
| CN111361191A (en) * | 2020-04-11 | 2020-07-03 | 东莞市广正模具塑胶有限公司 | Plastic glass imitation manufacturing process |
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| CN114932705A (en) * | 2022-05-16 | 2022-08-23 | Oppo广东移动通信有限公司 | Manufacturing method of shell, shell and electronic equipment |
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Application publication date: 20190419 |