CN103906385B - A kind of electronic product casing and preparation method thereof - Google Patents
A kind of electronic product casing and preparation method thereof Download PDFInfo
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- CN103906385B CN103906385B CN201210588760.XA CN201210588760A CN103906385B CN 103906385 B CN103906385 B CN 103906385B CN 201210588760 A CN201210588760 A CN 201210588760A CN 103906385 B CN103906385 B CN 103906385B
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Abstract
The invention provides a kind of electronic product casing, the electronic product casing has the three-decker of water-soluble hardened layer flexible glue layer ebonite layer, and the material of the water-soluble hardened layer is selected from the one kind in polyvinyl alcohol, polyvinyl acetate, Pioloform, polyvinyl acetal.Additionally provide the preparation method of the electronic product casing.Of the invention is to rely on double-shot moulding technology; " ebonite outsourcing, flexible glue is embedded " configuration is employed on product is related to, and is protected by imposing water-soluble hardened layer; effectively ensure successful implementation of the secondary operation on the double-colored product of soft or hard glue, greatly improve process rate.
Description
Technical field
The present invention relates to Electronic products manufacturing field, more particularly to a kind of flexible glue class injecting products field.
Background technology
With constantly weeding out the old and bring forth the new for current digital electronic goods, market competition is growing more intense, the biography that manufacturing industry is used
Commons material and its process technology have more and more been difficult to meet client and consumer demand.Two-shot molding process as it is a kind of in recent years
To rise simultaneously rapid popular product manufacturing means, compensate for commonly being molded the shortcoming of processing procedure to a certain extent, expand material
Selection and use scope, enrich the outward appearance and processing effect of product.But the technology remains unchanged and more relies on tradition at present
Engineering plastics such as PC/ABS alloys, makrolon（PC）, polymethyl methacrylate（PMMA）Deng, it is difficult to assigned on sense organ
Diversified and superior Consumer's Experience.With plastic polyurethane elastomer（TPU）Be represent thermoplastic elastic material because of it
Outstanding compatibility, excellent physical and mechanical properties are gradually paid close attention to by industry.The masterwork iPhone of Apple Inc. is even more
Flexible glue is expedited the emergence of（Soft touch effects）Containment vessel it is fashionable.This kind of material relies on the excellent machine for having both rubber and plastics concurrently
Tool characteristic, flexibly plastic color scheme, prominent environmental resistance, and good attachment between various macromolecular materials
Power, more and more manyly embodies as the Assembly part of the electronic products such as mobile phone.But because the characteristic of itself is limited, it is secondary
Poor in processability, cannot generally ensure required dimensional tolerance, therefore be difficult to directly as shaping fine structure such as phone housing
Raw material.Secondary operation currently for the flexible glue class product such as TPU there is no preferable mode.The scheme for generally using has two kinds：
1st, according to product structure design correspondence tool, will be machined after product orientation and common diaphragm of fitting, removed after finishing
Part simultaneously removes film layer by hand；2nd, directly laser carving is implemented in product surface（Laser engraving）.The shortcoming of such scheme 1 is：Plus
Man-hour cannot ensure process accurate positioning, TPU materials knife easy to stick, and form burr or damage type web-like chip, and manual striping
Workshop section wastes time and energy；The shortcoming of scheme 2 is then：The laser of different-waveband easily causes denaturation or Jiao at Product processing position
Change phenomenon, destroy its appearance, lead to not meet customer need.
The content of the invention
In order to solve present in prior art, double-shot moulding electronic product casing CNC post-processing process rates are low to ask
Topic, the invention provides a kind of electronic product casing, the electronic product casing has water-soluble hardened layer-flexible glue layer-ebonite layer
Flexible glue is embedded, the three-decker of ebonite outsourcing, the water-soluble hardened layer is selected from polyvinyl alcohol, polyvinyl acetate, polyethylene
One kind in acetal.
Present invention also offers a kind of preparation method of electronic product casing, including step：1）Using double-shot moulding,
Wherein, the first chromogen material is ebonite, and the second chromogen material is flexible glue, obtains injection moulded products；2）In step 1）The flexible glue of the injection moulded products for obtaining
Water-soluble hardened layer is sprayed on face, application element is obtained；3）By step 2）The application element for obtaining makees digital control processing by drawing,
Electronic product casing of the present invention is obtained, wherein, the water-soluble hardened layer is selected from polyvinyl alcohol, polyvinyl acetate, gathers
One kind in vinyl acetal.Wherein, " the first color " and " the second color " in double-shot moulding is all known to the skilled person
Technical term, " the first color " and " the second color " can also be designated as " first penetrates " and " second penetrates " respectively, and " one penetrates ", " two penetrate " are actual
The topology layout of dichroic materials product is represented, an injected plastics material penetrated forms the outer surface of product shell, and two penetrate material forms
The inner surface of product shell.
The present invention employs " ebonite outsourcing, flexible glue is embedded " configuration with double-shot moulding technology to rely on product is related to,
And protected by imposing aqueous hardening layer coating, effectively ensure successful implementation of the secondary operation on the double-colored product of soft or hard glue,
Greatly improve process rate.
Brief description of the drawings
Fig. 1 is the schematic diagram of " ebonite outsourcing, flexible glue is embedded " electronic product casing configuration disclosed by the invention.Wherein, 1 is
Water-soluble hardened layer, 2 is flexible glue layer, and 3 is ebonite layer.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention, is not intended to limit the present invention.
The invention provides a kind of electronic product casing, the electronic product casing has water-soluble hardened layer-flexible glue layer-hard
The three-decker of glue-line, the material of the water-soluble hardened layer is selected from polyvinyl alcohol, polyvinyl acetate, Pioloform, polyvinyl acetal
One or more.
Electronic product casing disclosed in this invention is in product structure design：Ebonite outsourcing, flexible glue is embedded, institute of the present invention
State the technical term that flexible glue and ebonite are known to the skilled person.The making coatings on flexible glue face are efficiently avoid to protect out
Existing problem, for example, because thermoplastic elastomer (TPE) TPU surface propertys are limited, it is impossible to surveyed by ultraviolet-resistant aging and pencil hardness
The problems such as examination.
In accordance with the present invention it is preferred that, the flexible glue layer choosing is from thermoplastic polyurethane（TPU）, thermoplastic elastomer (TPE)（TPE）、
Terephthalic acid (TPA)（TPA）, ethylene-vinyl acetate copolymer（EVA）In one or more.
In accordance with the present invention it is preferred that, the ebonite layer choosing self-polycarbonate（PC）, modification material of polycarbonate PC/ABS,
Polyamide（Nylon PA）, polymethyl methacrylate（PMMA）, polystyrene（PS）, polyethylene（PE）, polypropylene（PP）, propylene
Nitrile-BS（ABS）In one or more.
In accordance with the present invention it is preferred that, the thickness of the hardened layer is 0.7-1.2mm, and the thickness of the flexible glue layer is 0.5-
1.0mm, the thickness of the ebonite layer is 0.01-0.05mm.
Present invention also offers a kind of preparation method of electronic product casing, including step：1）Using double-shot moulding,
Wherein, the first chromogen material is ebonite, and the second chromogen material is flexible glue, obtains injection moulded products；2）In step 1）The flexible glue of the injection moulded products for obtaining
Water-soluble hardened layer is sprayed on face, application element is obtained；3）By step 2）The application element for obtaining makees digital control processing by drawing,
Electronic product casing of the present invention is obtained, wherein, the material of the water-soluble hardened layer is selected from polyvinyl alcohol, poly-vinegar acid second
One or more in alkene, Pioloform, polyvinyl acetal.Preferably, the step 3）In digital control processing direction be：From top to bottom, from
Water-soluble hardened layer is through flexible glue layer to ebonite layer.
According to above-mentioned preparation method, it is preferable that the step 1）In ebonite be selected from makrolon, polycarbonate modified material
Material PC/ABS, polyamide, polymethyl methacrylate, polystyrene, polyethylene, polypropylene PP, acrylonitrile-butadiene-benzene second
One or more in alkene copolymer.
According to above-mentioned preparation method, it is preferable that the step 1）In flexible glue be selected from thermoplastic polyurethane, thermoplastic elastic
One or more in body, terephthalic acid (TPA), ethylene-vinyl acetate copolymer.
According to above-mentioned preparation method, it is preferable that the step 1）In the first color：Injection pressure：2600±200kgf/
cm2；Firing rate：120±10mm/s.
According to above-mentioned preparation method, it is preferable that the step 1）In the second color：Injection pressure：2000±200kgf/
cm2；Firing rate：100±10mm/s.If being further etched in imparting Logo or pattern on the second color flexible glue face by mould, its
The effect for being reached outclass apparent obtained by the second color ebonite material surface, substantially increases definition.
According to above-mentioned preparation method, it is preferable that also including step：Part after spraying is dried, drying temperature 40-
50℃。
According to above-mentioned preparation method, wherein, the step 1）The injection moulded products structure for obtaining is ebonite outsourcing, and flexible glue is embedded.
Preparation method disclosed in this invention can be applied to mobile phone, MP3/MP4, portable/panel computer, digital camera
Deng Electronic products manufacturing field, secondary operation or pattern effect smoothly can be realized on flexible glue class injecting products.
According to above-mentioned preparation method, it is further preferred that also including step：Digital control processing is carried out after drying.
According to above-mentioned preparation method, it is further preferred that also including step：Product is washed after digital control processing.
The preferred technical solution of the present invention can be specifically described as：With Traditional project plastics PC, PC/ABS etc. for the first color, with
The flexible glues such as TPU are the second color, and the technique for employing double-shot moulding implements surface spraying after shaping, attachment protects painting with aqueous
Layer PVA（Polyvinyl alcohol）Deng carrying out digital control processing（CNC）Final products are obtained after secondary operation and cleaning.
Fabrication processing can be specifically described as：-- tool and injection mold open system -- dual-color forming -- to product structure design
Aqueous coating is protected -- dries -- CNC-- washings -- finished product.Can further be specifically described as：1st, deisgn product structural drawings；2、
Develop corresponding injection mold and spraying, CNC tools；3rd, double-shot moulding；4th, the moulding after shaping is placed in into spraying to control
Give water-soluble hardened layer coating in tool, it is ensured that coating uniform；5th, application element is put into baking oven and is dried treatment, time
15min-20min, baking temperature is set in 40-50 DEG C；6th, dried sample is made into digital control processing by drawing（CNC）；
7th, sample is washed, is obtained final finished.
By above step, you can be made a kind of double-colored product of Novel soft.The technical scheme has accurately processed product
Pore structure, the material of non-sprayed coating, product are substantially better than CNC processing characteristicies on water-soluble poval layer flexible glue layer are coated with
Processing edge occurs without flash phenomenon, and machining accuracy is 0.05mm.The water-soluble hardened layer is used to improve to be made on flexible glue face
The cutter precision of secondary mechanical processing, and improve the appearance after processing, it is to avoid burr caused by cutting or laser carving trigger
Part burn risk, water-soluble hardened layer as the aid in process, the quilt because of its extremely excellent water solubility afterwards
It is fully erased and leave no trace.The process of artificial striping had both been eliminated on the whole, man-hour had been shortened, and had also effectively improved product system
The yield of journey, and saved cost.
This product of the present invention at utmost make use of the surface effect variation that double-shot moulding and TPU materials are brought, and have
Effect overcomes traditional handicraft for the bad sign caused by elastomeric material processing, and then has widened such material future market
The space of application.
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain this
Invention, is not intended to limit the present invention.
Embodiment 1
1st, deisgn product drawing, opens injection mold processed and spraying, CNC tools
The structural drawings of battery of mobile phone bonnet is designed and developed, injection mold processed and spray finishing jig is opened according to product configurations, really
Protect mould tool dimensional accuracy；
2nd, raw material are molded
From the dichroic materials combination of PC+TPU, wherein the first chromogen material is PC1231T（Sabic）, the second chromogen material is
TPU83085A（Bayer）；
3rd, double-shot moulding
First color PC1231T：Injection pressure：2600kgf/ cm2, firing rate：110mm/s, dynamic model temperature：158 DEG C, cover half
Temperature：120 DEG C, drying temperature：120 DEG C, drying time：4h；
Second color TPU83085A：Injection pressure：2000kgf/ cm2, firing rate：100mm/s, dynamic model temperature：It is 158 DEG C, fixed
Mould temperature：20 DEG C, drying temperature：100 DEG C, drying time：4h；Obtain injection moulding sample；
4th, water-soluble hardened layer spraying
Injection moulding sample is placed in spray finishing jig and gives PVA sprayings, it is ensured that uniformity；
5th, part is dried
Spraying back part is positioned in baking oven and is vacuum dried, set drying temperature as 45 DEG C, baking time is
20min；
6th, digital control processing
Sample is clamped in tool and is put into numer centre and is machined, board model FANUC（Fa Nake）, processing
Parameter is as follows：
TPU（Flexible glue）：Tool specification（Φ3.175*2*6）, rotating speed（12000+/-3000RPM）, feeding（2500+/-
500mm/min）, the length 22.5mm of hole position, width 8.7mm；
PC（Ebonite）：Tool specification（Φ6*1.5*6）, rotating speed（20000+/-5000RPM）, feeding（1500+/-500mm/
min）, the length 8.7mm of hole position, width 22.5mm；
7th, wash, obtain final finished
Product after numerical control is machined be placed in conveyer belt be delivered in tank with clear water rinse after, dry and obtain final product required product
Product S1.
Embodiment 2
Compared with Example 1, difference is to replace " PC+TPU's with " dichroic materials of PC/ABS+TPU are combined "
Dichroic materials are combined ", wherein, PC/ABS is selected from the PC/ABS C1200HF of sabic companies, and remaining is same as Example 1, obtains
Product S2.
Embodiment 3
Compared with Example 1, difference is to lack step 5, and remaining is same as Example 1, obtains product S3.
Embodiment 4
Compared with Example 1, difference is that difference is that step 3 parameter is " the first color PC1231T：Injection
Pressure：2400kgf/ cm2, firing rate：120mm/s, dynamic model temperature：100 DEG C, cover half temperature：80 DEG C, drying temperature：120 DEG C, do
The dry time：4h；
Second color TPU83085A：Injection pressure：1800kgf/ cm2, firing rate：110mm/s, dynamic model temperature：It is 100 DEG C, fixed
Mould temperature：60 DEG C, drying temperature：80 DEG C, drying time：4h；Obtain injection moulding sample；", remaining is same as Example 1,
Obtain product S4.
Embodiment 5
Compared with Example 1, difference is, is replaced with " dichroic materials of PMMA+TPE are combined " " PC+TPU pair
Color combination of materials ", remaining is same as Example 1, obtains product S5.
Embodiment 6
Compared with Example 1, difference is in step 4, " PVA " to be replaced with " polyvinyl acetate ", remaining with reality
Apply example 1 identical, obtain product S6.
Comparative example 1
Compared with Example 1, difference is that step 6 is substituted for into following steps：
Sample is fixed on punching press machine worktable using tool, processing is punched out, pressure 10kg, the length of hole position is punched
Degree 8.7mm, width 22.5mm, remaining is same as Example 3, obtains product DS1.
Comparative example 2
Compared with Example 1, difference is that step 6 is substituted for into following steps：
Sample is fixed on CO2 laser work platforms using tool, cutting processing, working power 40W, the length of hole position is carried out
Degree 8.7mm, width 22.5mm, remaining is same as Example 4, obtains product DS2.
Comparative example 3
Compared with Example 1, difference is to lack step 4 and 5, and remaining is same as Example 1, obtains product
DS3。
Performance test
1., in sample well structure vertical direction, it is projected on test desk again using monochromatic light amplification 4；
2. through hole projecting edge burr is observed, its pore structure length and width size, and record data is measured；
3. data are reduced 4 times, data are calculated as non-defective unit in hole long 22.5 ± 0.05 and hole wide 8.7 ± 0.05.
| Sample test method | Test quantity pcs | Yield % | |
| S1 | Sciagraphy | 100 | 98 |
| S2 | Sciagraphy | 100 | 98 |
| S3 | Sciagraphy | 100 | 90 |
| S4 | Sciagraphy | 100 | 84 |
| S5 | Sciagraphy | 100 | 95 |
| S6 | Sciagraphy | 100 | 96 |
| DS1 | Sciagraphy | 100 | 5 |
| DS2 | Sciagraphy | 100 | 17 |
| DS3 | Sciagraphy | 100 | 53 |
As seen from the above table, product pore structure has accurately been processed using technical scheme, has been sprayed on flexible glue layer
CNC processing characteristicies are substantially better than the material of non-sprayed coating, water-soluble hardened layer spraying and CNC digital control processings after water-soluble hardened layer
With reference to causing Product processing edge to occur without flash phenomenon, process rate is high.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of electronic product casing, it is characterised in that the electronic product casing has water-soluble hardened layer-flexible glue layer-ebonite
The three-decker of layer, the material of the water-soluble hardened layer is selected from polyvinyl alcohol, polyvinyl acetate, Pioloform, polyvinyl acetal
Kind.
2. electronic product casing according to claim 1, it is characterised in that the material of the flexible glue layer is selected from thermoplastic poly
One or more in urethane, thermoplastic elastomer (TPE), terephthalic acid (TPA), ethylene-vinyl acetate copolymer.
3. electronic product casing according to claim 1, it is characterised in that the material of the ebonite layer is selected from poly- carbonic acid
Ester, modification material of polycarbonate PC/ABS, polyamide, polymethyl methacrylate, polystyrene, polyethylene, polypropylene, propylene
One or more in nitrile-BS.
4. electronic product casing according to claim 1, it is characterised in that the thickness of the hardened layer is 0.7-1.2mm,
The thickness of the flexible glue layer is 0.5-1.0mm, and the thickness of the ebonite layer is 0.01-0.05mm.
5. a kind of preparation method of electronic product casing, including step：1）Using double-shot moulding, wherein, the first chromogen material
It is ebonite, the second chromogen material is flexible glue, obtains injection moulded products；2）In step 1）Sprayed on the flexible glue face of the injection moulded products for obtaining water-soluble hard
Change layer, obtain application element；3）By step 2）The application element for obtaining makees digital control processing by drawing, obtains claim 1 institute
The electronic product casing stated, wherein, the water-soluble hardened layer is selected from polyvinyl alcohol, polyvinyl acetate, Pioloform, polyvinyl acetal
One kind.
6. preparation method according to claim 5, its spy is being, the step 3）Middle digital control processing direction is from water-soluble
Property hardened layer through flexible glue layer to ebonite layer.
7. preparation method according to claim 5, its spy is being, the step 1）In ebonite be selected from makrolon,
Modification material of polycarbonate PC/ABS, polyamide, polymethyl methacrylate, polystyrene, polyethylene, polypropylene PP, propylene
One kind in nitrile-BS.
8. preparation method according to claim 5, its spy is being, the step 1）In flexible glue be selected from thermoplastic poly ammonia
One kind in ester, thermoplastic elastomer (TPE), terephthalic acid (TPA), ethylene-vinyl acetate copolymer.
9. preparation method according to claim 5, its spy is being, the step 1）In the first color：Injection pressure：
2600±200kgf/cm2；Firing rate：120±10mm/s.
10. preparation method according to claim 5, its spy is being, the step 1）In the second color：Injection pressure：
2000±200kgf/cm2；Firing rate：100±10mm/s.
11. preparation methods according to claim 5, its spy is being, also including step：Part after spraying is first carried out
Dry, 40-50 DEG C of drying temperature.
12. preparation methods according to claim 5, its spy is being, also including step：Product is carried out after digital control processing
Washing.
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| CN104175447A (en) * | 2014-08-07 | 2014-12-03 | 浙江锦盛包装有限公司 | Process for forming thick-wall transparent products |
| CN106543676B (en) * | 2016-10-26 | 2018-06-05 | 安徽飞达电气科技有限公司 | Excellent capacitor plastic housing of a kind of noise reduction performance and preparation method thereof |
| CN107692448A (en) * | 2017-08-27 | 2018-02-16 | 昆山六二丰塑胶电子有限公司 | Bicolor plastic cement shell and preparation method thereof |
| CN111231222B (en) * | 2020-01-18 | 2022-03-29 | 深圳市吉迩科技有限公司 | Three-proofing aerosol generating device main body, aerosol generating device and double-color injection molding method |
| CN115139365A (en) * | 2022-06-27 | 2022-10-04 | 杭州逗酷软件科技有限公司 | Method for manufacturing structural member and electronic device |
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