CN105827760A - Mobile phone case capable of accommodating standby battery and manufacturing process thereof - Google Patents
Mobile phone case capable of accommodating standby battery and manufacturing process thereof Download PDFInfo
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- CN105827760A CN105827760A CN201610314875.8A CN201610314875A CN105827760A CN 105827760 A CN105827760 A CN 105827760A CN 201610314875 A CN201610314875 A CN 201610314875A CN 105827760 A CN105827760 A CN 105827760A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
- H04M1/0262—Details of the structure or mounting of specific components for a battery compartment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention relates to the technical field of mobile phone cases, in particular to a mobile phone case capable of accommodating a standby battery and a manufacturing process thereof. The mobile phone case comprises a shell body and a groove which is formed in the shell body and used for holding the standby battery, wherein the shell body comprises a first PC (Polycarbonate) plastic layer, a second PC plastic layer and a composite material layer which is bonded with the first PC plastic layer and the second PC plastic layer respectively and can bend and rebound; the first PC plastic layer, the composite material layer and the second PC plastic layer are arranged on a same layer, and construct an inner layer of the shell body; and the shell body further comprises a low-temperature silica gel layer covering the inner layer, and an adhesive layer which is arranged between the inner layer and the low-temperature silica gel layer. Through the composite material layer which can bend and rebound, a mobile phone can be put into the mobile phone case conveniently. Through adoption of the manufacturing process, very great adhesive force can be generated between silica gel and PC plastic or certain composite materials. Moreover, the manufacturing process has the characteristics of simple process, low production cost and suitability for large-scale production.
Description
Technical field
The present invention relates to the technical field of mobile phone protective cover, particularly relate to a kind of mobile phone protective cover assembling reserve battery and preparation technology thereof.
Background technology
Along with the application of mobile phone is more and more extensive, in order to pursue attractive in appearance and play a protective role mobile phone, mobile phone protective cover is the most increasingly liked by consumer.But, mobile phone protective cover of the prior art, the typically no space being designed for placing reserve battery, cause cellie the most convenient during using mobile phone.Additionally; even if mobile phone protective cover of the prior art is provided with the space for assembling reserve battery; but; after reserve battery is assemblied in mobile phone protective cover; again cell-phone cover is entered during mobile phone protective cover the most relatively difficult; i.e. consumer needs cell-phone cover to be entered mobile phone protective cover by bigger active force, so on the one hand causes operating difficulties, is on the other hand also easily caused mobile phone abrasion.
Additionally; prior art is prepared in the technique of mobile phone protective cover; often there is the problem that silica gel is difficult to engage very well with PC plastics or some composites; especially need to more be difficult to ensure that silica gel can have preferable adhesive force with PC plastics or some composites at the silica gel of about 110 DEG C cryogenic vulcanization molding.
Summary of the invention
An object of the present invention is to provide a kind of mobile phone protective cover that can be easy to be inserted in the assembled reserve battery of mobile phone for weak point of the prior art.
The two of the purpose of the present invention are to provide the preparation technology of a kind of mobile phone protective cover assembling reserve battery for weak point of the prior art, and this preparation technology enables to there is good adhesive force between silica gel and PC plastics or some composites.
For reaching one of above-mentioned purpose, the present invention is achieved through the following technical solutions.
There is provided a kind of mobile phone protective cover assembling reserve battery, including shell body and be opened in the intrinsic groove for placing reserve battery of described shell；
Described shell body include a PC plastic layer, the 2nd PC plastic layer, engage with a described PC plastic layer and described 2nd PC plastic layer respectively and can bend and the composite layer of resilience；
A described PC plastic layer, described composite layer and described 2nd PC plastic layer are arranged in same aspect, and form the internal layer of described shell body；
Described shell body also includes the low temperature silicon glue-line being covered in described internal layer and is arranged at the adhesion agent layer between described internal layer and described low temperature silicon glue-line.
The surrounding of described groove is provided with several for the nut bore fixing reserve battery.
Described shell body is provided with the sidewall recess for inlaying mobile phone.
Described shell body also includes the ink protective layer with smooth texture being covered in described low temperature silicon glue-line.
Described composite layer is set to glass fiber compound material layer.
Solid in described adhesion agent layer is made up of the component of following parts by weight:
Low temperature silicon gum 8 parts ~ 12 parts
Ethyl acetate 85 parts ~ 95 parts
Silane coupler 1 part ~ 3 parts
0.5 part ~ 2 parts of platinum water；
Wherein, described low temperature silicon gum is to be provided by Science and Technology Ltd. of Linghai City of Shenzhen, and its model is TSE3221；
Described silane coupler is to be provided by superior Chang Hao Science and Technology Ltd. of Shenzhen, and its model is KT-889.
Ink in the described ink protective layer with smooth texture is made up of the component of following parts by weight:
Isophorone 8 parts ~ 12 parts
White spirit 75 parts ~ 85 parts
Low temperature silicon gum 8 parts ~ 12 parts
Silica dioxide delustring agent 2 parts ~ 5 parts
2 parts ~ 5 parts of platinum water
Smooth hand feeling agent 1 part ~ 3 parts；
Wherein, described low temperature silicon gum is to be provided by Science and Technology Ltd. of Linghai City of Shenzhen, and its model is TSE3221；
Described smooth hand feeling agent is to be provided by Dongguan City Qi Gui Electronic Science and Technology Co., Ltd., and its model is ZS-165.
For reaching the two of above-mentioned purpose, the present invention is achieved through the following technical solutions.
Thering is provided the preparation technology of a kind of mobile phone protective cover assembling reserve battery, it comprises the following steps:
Step one, bi-material is disposably molded: use bicolor injection mould by PC plastic cement and composite bi-material once injection moulding, to form the internal layer of the shell body being made up of a described PC plastic layer, described composite layer and described 2nd PC plastic layer, and nut is fixed on described shell body；
Step 2, spraying solid: the one layer of adhesion agent layer of internal layer surface spraying of the shell body formed in step one；
Step 3, molding low temperature silicon glue-line: utilize silica gel mould at the molded one layer of low temperature silicon glue-line of surface oil of the adhesion agent layer of step 2；
Step 4, spraying has the ink protective layer of smooth texture: the low temperature silicon film surface in step 3 sprays one layer of ink protective layer with smooth texture, i.e. completes to assemble the preparation of the mobile phone protective cover of reserve battery.
In technique scheme, in described step 3 molding low temperature silicon glue-line step, the temperature of described oil pressure molding is 110 DEG C ~ 115 DEG C, and the time of described oil pressure molding is 180s ~ 200s, and the pressure of described oil pressure molding is 90kgf/cm2~110kgf/cm2。
Beneficial effects of the present invention:
(1) a kind of mobile phone protective cover assembling reserve battery that the present invention provides; owing to being bonded to bend and the composite layer of resilience between a PC plastic layer and the 2nd PC plastic layer; and then make this mobile phone protective cover that can assemble reserve battery have the characteristic of bending and resilience; therefore, this mobile phone protective cover that can assemble reserve battery can be easy to be inserted in mobile phone.
(2) a kind of mobile phone protective cover assembling reserve battery that the present invention provides; it is provided with adhesion agent layer between internal layer and the low temperature silicon glue-line of the shell body being made up of a PC plastic layer, composite layer and the 2nd PC plastic layer; and the solid in this adhesion agent layer is made up of low temperature silicon gum, ethyl acetate, silane coupler and platinum water; hence in so that under cryogenic (110 DEG C ~ 115 DEG C), it is possible to ensure that low temperature silicon glue-line has good adhesive force with the internal layer of shell body.
(3) a kind of mobile phone protective cover assembling reserve battery that the present invention provides; owing to being coated with one layer of ink protective layer with smooth texture at low temperature silicon film surface; make this surface that can assemble the mobile phone protective cover of reserve battery have the handle effect of smooth texture, there is again good protective effect simultaneously.Additionally; owing to this ink protective layer with smooth texture is made up of isophorone, white spirit, low temperature silicon gum, silica dioxide delustring agent, platinum water and smooth hand feeling agent; making this have the ink protective layer of smooth texture can be at 110 DEG C of baking-curing; and and have good adhesive force between low temperature silicon glue-line, and its anti-wear performance is good.
(4) a kind of mobile phone protective cover assembling reserve battery that the present invention provides, owing to being provided with low temperature silicon glue-line, and then makes this mobile phone protective cover that can assemble reserve battery have elasticity, the shockproof and effect of drop resistant.
(5) preparation technology of a kind of mobile phone protective cover assembling reserve battery that the present invention provides; this preparation technology enables to there is good adhesive force between silica gel and PC plastics or some composites; and it is simple to have technique, production cost is low, and can be applicable to the feature of large-scale production.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of mobile phone protective cover assembling reserve battery of the present invention.
Fig. 2 is the cutting structural representation of a kind of mobile phone protective cover assembling reserve battery of the present invention.
Fig. 3 is the partial enlargement structural representation in Fig. 2 at A.
Reference:
Shell body 1, internal layer 11, low temperature silicon glue-line 12, adhesion agent layer 13, sidewall recess 14, there is ink protective layer the 15, the oneth PC plastic layer the 101, the 2nd PC plastic layer 102 of smooth texture, composite layer 103；
Groove 2；
Nut bore 3.
Detailed description of the invention
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment 1.
A kind of mobile phone protective cover assembling reserve battery of the present embodiment, as shown in Figure 1 to Figure 3, including shell body 1 and the groove 2 for placing reserve battery that is opened in shell body 1；Shell body 1 include PC plastic layer the 101, a 2nd PC plastic layer 102, engage with a PC plastic layer 101 and the 2nd PC plastic layer 102 respectively and can bend and the composite layer 103 of resilience；Oneth PC plastic layer 101, composite layer 103 and the 2nd PC plastic layer 102 are arranged in same aspect, and form the internal layer 11 of shell body 1；Shell body 1 also includes the low temperature silicon glue-line 12 being covered in internal layer 11 and the adhesion agent layer 13 being arranged between internal layer 11 and low temperature silicon glue-line 12.Owing to being bonded to bend and the composite layer 103 of resilience between PC plastic cement/101 and the 2nd PC plastic layer 102; and then make this mobile phone protective cover that can assemble reserve battery have the characteristic of bending and resilience; therefore, this mobile phone protective cover that can assemble reserve battery can be easy to be inserted in mobile phone.Further, since be provided with low temperature silicon glue-line 12, and then this mobile phone protective cover that can assemble reserve battery is made to have elasticity, the shockproof and effect of drop resistant.
In the present embodiment, the surrounding of groove 2 be provided with several for the nut bore 3 fixing reserve battery, and then after making reserve battery put into groove 2, utilize nut and nut bore to be fastened and fixed reserve battery.
In the present embodiment, shell body 1 is provided with the sidewall recess 14 for inlaying mobile phone.This sidewall recess 14 enables to mobile phone and is firmly enclosed within this mobile phone protective cover that can assemble reserve battery.
In the present embodiment, shell body 1 also includes the ink protective layer 15 with smooth texture being covered in low temperature silicon glue-line 12.This ink protective layer 15 with smooth texture makes this surface that can assemble the mobile phone protective cover of reserve battery have the handle effect of smooth texture, has again good protective effect simultaneously.
In the present embodiment, composite layer 103 is set to glass fiber compound material layer.This glass fiber compound material layer has good bending property and rebound performance.
In the present embodiment, the solid in adhesion agent layer 13 is made up of the component of following parts by weight:
Low temperature silicon gum 10 parts
Ethyl acetate 90 parts
Silane coupler 1.5 parts
1 part of platinum water；
Wherein, low temperature silicon gum is to be provided by Science and Technology Ltd. of Linghai City of Shenzhen, and its model is TSE3221；
Silane coupler is to be provided by superior Chang Hao Science and Technology Ltd. of Shenzhen, and its model is KT-889.
Solid in this adhesion agent layer 13 is made up of low temperature silicon gum, ethyl acetate, silane coupler and platinum water, hence in so that under cryogenic (110 DEG C ~ 115 DEG C), it is possible to ensure that low temperature silicon glue-line 12 has good adhesive force with the internal layer 11 of shell body 1.
In the present embodiment, the ink having in the ink protective layer 15 of smooth texture is made up of the component of following parts by weight:
Isophorone 10 parts
White spirit 80 parts
Low temperature silicon gum 10 parts
Silica dioxide delustring agent 3 parts
3 parts of platinum water
Smooth hand feeling agent 2 parts；
Wherein, low temperature silicon gum is to be provided by Science and Technology Ltd. of Linghai City of Shenzhen, and its model is TSE3221；
Smooth hand feeling agent is to be provided by Dongguan City Qi Gui Electronic Science and Technology Co., Ltd., and its model is ZS-165.
Owing to this ink protective layer 15 with smooth texture is made up of isophorone, white spirit, low temperature silicon gum, silica dioxide delustring agent, platinum water and smooth hand feeling agent; making this have the ink protective layer 15 of smooth texture can be at 110 DEG C of baking-curing; and and have good adhesive force between the 12 of low temperature silicon glue-line, and its anti-wear performance is good.
Embodiment 2.
A kind of embodiment 2 of the mobile phone protective cover assembling reserve battery of the present invention, the present embodiment is with the difference of embodiment 1:
In the present embodiment, the solid in adhesion agent layer 13 is made up of the component of following parts by weight:
Low temperature silicon gum 8 parts
Ethyl acetate 95 parts
Silane coupler 1 part
0.5 part of platinum water.
In the present embodiment, the ink having in the ink protective layer 15 of smooth texture is made up of the component of following parts by weight:
Isophorone 8 parts
White spirit 85 parts
Low temperature silicon gum 8 parts
Silica dioxide delustring agent 2 parts
2 parts of platinum water
Smooth hand feeling agent 1 part.
Other structure and working principle of the present embodiment is same as in Example 1, does not repeats them here.
Embodiment 3.
A kind of embodiment 3 of the mobile phone protective cover assembling reserve battery of the present invention, the present embodiment is with the difference of embodiment 1:
In the present embodiment, the solid in adhesion agent layer 13 is made up of the component of following parts by weight:
Low temperature silicon gum 12 parts
Ethyl acetate 85 parts
Silane coupler 3 parts
2 parts of platinum water.
In the present embodiment, the ink having in the ink protective layer 15 of smooth texture is made up of the component of following parts by weight:
Isophorone 2 parts
White spirit 75 parts
Low temperature silicon gum 12 parts
Silica dioxide delustring agent 5 parts
5 parts of platinum water
Smooth hand feeling agent 3 parts.
Other structure and working principle of the present embodiment is same as in Example 1, does not repeats them here.
Embodiment 4.
A kind of preparation technology of the mobile phone protective cover assembling reserve battery of the present embodiment, it comprises the following steps:
Step one, bi-material is disposably molded: use bicolor injection mould by PC plastic cement and composite bi-material once injection moulding, to form the internal layer of the shell body being made up of a PC plastic layer, composite layer and the 2nd PC plastic layer, and nut is fixed on shell body；
Step 2, spraying solid: the one layer of adhesion agent layer of internal layer surface spraying of the shell body formed in step one；
Step 3, molding low temperature silicon glue-line: utilize silica gel mould at the molded one layer of low temperature silicon glue-line of surface oil of the adhesion agent layer of step 2；In the present embodiment, the temperature of oil pressure molding is 115 DEG C, and the time of described oil pressure molding is 200s, and the pressure of described oil pressure molding is 100kgf/cm2；
Step 4, spraying has the ink protective layer of smooth texture: the low temperature silicon film surface in step 3 sprays one layer of ink protective layer with smooth texture, i.e. completes to assemble the preparation of the mobile phone protective cover of reserve battery.
Embodiment 5.
A kind of preparation technology of the mobile phone protective cover assembling reserve battery of the present embodiment, it comprises the following steps:
Step one, bi-material is disposably molded: use bicolor injection mould by PC plastic cement and composite bi-material once injection moulding, to form the internal layer of the shell body being made up of a PC plastic layer, composite layer and the 2nd PC plastic layer, and nut is fixed on shell body；
Step 2, spraying solid: the one layer of adhesion agent layer of internal layer surface spraying of the shell body formed in step one；
Step 3, molding low temperature silicon glue-line: utilize silica gel mould at the molded one layer of low temperature silicon glue-line of surface oil of the adhesion agent layer of step 2；In the present embodiment, the temperature of oil pressure molding is 110 DEG C, and the time of described oil pressure molding is 180s, and the pressure of described oil pressure molding is 110kgf/cm2；
Step 4, spraying has the ink protective layer of smooth texture: the low temperature silicon film surface in step 3 sprays one layer of ink protective layer with smooth texture, i.e. completes to assemble the preparation of the mobile phone protective cover of reserve battery.
Embodiment 6.
A kind of preparation technology of the mobile phone protective cover assembling reserve battery of the present embodiment, it comprises the following steps:
Step one, bi-material is disposably molded: use bicolor injection mould by PC plastic cement and composite bi-material once injection moulding, to form the internal layer of the shell body being made up of a PC plastic layer, composite layer and the 2nd PC plastic layer, and nut is fixed on shell body；
Step 2, spraying solid: the one layer of adhesion agent layer of internal layer surface spraying of the shell body formed in step one；
Step 3, molding low temperature silicon glue-line: utilize silica gel mould at the molded one layer of low temperature silicon glue-line of surface oil of the adhesion agent layer of step 2；In the present embodiment, the temperature of oil pressure molding is 112 DEG C, and the time of described oil pressure molding is 190s, and the pressure of described oil pressure molding is 90kgf/cm2；
Step 4, spraying has the ink protective layer of smooth texture: the low temperature silicon film surface in step 3 sprays one layer of ink protective layer with smooth texture, i.e. completes to assemble the preparation of the mobile phone protective cover of reserve battery.
Finally should be noted that; above example is merely to illustrate technical scheme rather than limiting the scope of the invention; although the present invention being explained in detail with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (9)
1. the mobile phone protective cover that can assemble reserve battery, it is characterised in that: include shell body and be opened in the intrinsic groove for placing reserve battery of described shell；
Described shell body include a PC plastic layer, the 2nd PC plastic layer, engage with a described PC plastic layer and described 2nd PC plastic layer respectively and can bend and the composite layer of resilience；
A described PC plastic layer, described composite layer and described 2nd PC plastic layer are arranged in same aspect, and form the internal layer of described shell body；
Described shell body also includes the low temperature silicon glue-line being covered in described internal layer and is arranged at the adhesion agent layer between described internal layer and described low temperature silicon glue-line.
2. a kind of mobile phone protective cover assembling reserve battery described in claim 1, it is characterised in that: the surrounding of described groove is provided with several for the nut bore fixing reserve battery.
3. a kind of mobile phone protective cover assembling reserve battery described in claim 1, it is characterised in that: described shell body is provided with the sidewall recess for inlaying mobile phone.
4. a kind of mobile phone protective cover assembling reserve battery described in claim 1, it is characterised in that: described shell body also includes the ink protective layer with smooth texture being covered in described low temperature silicon glue-line.
5. a kind of mobile phone protective cover assembling reserve battery described in claim 1, it is characterised in that: described composite layer is set to glass fiber compound material layer.
6. a kind of mobile phone protective cover assembling reserve battery described in claim 1, it is characterised in that: the solid in described adhesion agent layer is made up of the component of following parts by weight:
Low temperature silicon gum 8 parts ~ 12 parts
Ethyl acetate 85 parts ~ 95 parts
Silane coupler 1 part ~ 3 parts
0.5 part ~ 2 parts of platinum water；
Wherein, described low temperature silicon gum is to be provided by Science and Technology Ltd. of Linghai City of Shenzhen, and its model is TSE3221；
Described silane coupler is to be provided by superior Chang Hao Science and Technology Ltd. of Shenzhen, and its model is KT-889.
7. a kind of mobile phone protective cover assembling reserve battery described in claim 4, it is characterised in that the ink having described in: in the ink protective layer of smooth texture is made up of the component of following parts by weight:
Isophorone 8 parts ~ 12 parts
White spirit 75 parts ~ 85 parts
Low temperature silicon gum 8 parts ~ 12 parts
Silica dioxide delustring agent 2 parts ~ 5 parts
2 parts ~ 5 parts of platinum water
Smooth hand feeling agent 1 part ~ 3 parts；
Wherein, described low temperature silicon gum is to be provided by Science and Technology Ltd. of Linghai City of Shenzhen, and its model is TSE3221；
Described smooth hand feeling agent is to be provided by Dongguan City Qi Gui Electronic Science and Technology Co., Ltd., and its model is ZS-165.
8. the preparation technology of a kind of mobile phone protective cover assembling reserve battery described in claim 1 to 7 any one, it is characterised in that: it comprises the following steps:
Step one, bi-material is disposably molded: use bicolor injection mould by PC plastic cement and composite bi-material once injection moulding, to form the internal layer of the shell body being made up of a described PC plastic layer, described composite layer and described 2nd PC plastic layer, and nut is fixed on described shell body；
Step 2, spraying solid: the one layer of adhesion agent layer of internal layer surface spraying of the shell body formed in step one；
Step 3, molding low temperature silicon glue-line: utilize silica gel mould at the molded one layer of low temperature silicon glue-line of surface oil of the adhesion agent layer of step 2；
Step 4, spraying has the ink protective layer of smooth texture: the low temperature silicon film surface in step 3 sprays one layer of ink protective layer with smooth texture, i.e. completes to assemble the preparation of the mobile phone protective cover of reserve battery.
9. the preparation technology of a kind of mobile phone protective cover assembling reserve battery described in claim 8; it is characterized in that: in described step 3 molding low temperature silicon glue-line step; the temperature of described oil pressure molding is 110 DEG C ~ 115 DEG C; the time of described oil pressure molding is 180s ~ 200s, and the pressure of described oil pressure molding is 90kgf/cm2~110kgf/cm2。
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| CN108219175A (en) * | 2017-12-29 | 2018-06-29 | 兴科电子(东莞)有限公司 | A kind of preparation process of the silica gel product with color dot |
| CN109760253A (en) * | 2018-12-29 | 2019-05-17 | 兴科电子(东莞)有限公司 | A kind of moulding process of double-colored watchband |
| CN109950432A (en) * | 2019-03-05 | 2019-06-28 | 宁国市千洪电子有限公司 | A kind of battery cover protective film |
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| CN105196468A (en) * | 2015-10-23 | 2015-12-30 | 兴科电子(东莞)有限公司 | Production process of mobile phone rear cover |
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| CN107116887A (en) * | 2017-04-28 | 2017-09-01 | 合肥联宝信息技术有限公司 | Method for producing shell |
| CN108219175A (en) * | 2017-12-29 | 2018-06-29 | 兴科电子(东莞)有限公司 | A kind of preparation process of the silica gel product with color dot |
| CN109760253A (en) * | 2018-12-29 | 2019-05-17 | 兴科电子(东莞)有限公司 | A kind of moulding process of double-colored watchband |
| CN109950432A (en) * | 2019-03-05 | 2019-06-28 | 宁国市千洪电子有限公司 | A kind of battery cover protective film |
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