CN101640987A - Method for manufacturing shell and shell manufactured by method - Google Patents
Method for manufacturing shell and shell manufactured by method Download PDFInfo
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- CN101640987A CN101640987A CN200810135410A CN200810135410A CN101640987A CN 101640987 A CN101640987 A CN 101640987A CN 200810135410 A CN200810135410 A CN 200810135410A CN 200810135410 A CN200810135410 A CN 200810135410A CN 101640987 A CN101640987 A CN 101640987A
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Abstract
The invention discloses a method for manufacturing a shell, which comprises the following steps of: firstly, providing a transparent plastic film layer and printing a shell surface pattern layer outside a window area on the first surface of the film with ink; secondly, punching cut cracks besides keystrokes in the film to facilitate pressing the keystrokes; thirdly, coating an elastic material layer on the second surface of the film, wherein the elastic material layer at least covers a keystroke area consisting of the keystrokes and the cut cracks so as to facilitate the restoration of the keystrokes after the keystrokes are pressed and then released and to provide waterproofness for the keystroke area; fourthly, pre-pressing and forming the film and cutting side materials so as to form asemi-finished product of the shell, wherein the first surface of the film is on the inner surface of the semi-finished product of the shell; and finally, ejecting melted plastics onto the inner surface of the semi-finished product of the shell so as to form a shell layer outside the window area and the keystroke area and finish the manufacturing of the shell. The shell after being manufactured hasthe shell surface pattern layer, a screen protecting board and the keystrokes, thereby reducing the time and cost required by manufacturing and assembling the shell.
Description
Technical field
The invention relates to a kind of casing manufacture method, and particularly relevant for a kind of in-molded (In-Mold Forming is called for short IMF) casing manufacture method of technology and casing that uses this method to make of utilizing.
Background technology
Along with development of science and technology, portable electronic devices of staff has been a general phenomenon very.These portable electronic devices for example are devices such as mobile phone, MP3 player, PDA(Personal Digital Assistant).With the mobile phone is example, because often need carry and use, the user generally can be for it adds protective device, to prevent that appearance is by scratch.
For instance, the TaiWan, China patent announcement discloses a kind of transparent flexible plastic cement leather sheath M322754 number in its prior art.And in order to improve the shortcoming that pierces through that this soft plastic leather sheath can not protect sharp object, this patent proposes a kind of containment vessel group, and its transparent shell engaging that utilizes upper and lower two hard rigid material is positioned at wherein mobile phone with protection.Therefore but the user must expense of ancillary cost buy the containment vessel group that is fit to its mobile phone external form, and mobile phone adds, and relatively can to become big change certainly after the containment vessel group heavy.Moreover, some mobile phones, as No. 457191 revealer of institute of TaiWan, China patent announcement, its casing and button must be earlier respectively by assembling after the processing procedure moulding separately again.In addition, some mobile phones, disclosed as No. the 2681476th, People's Republic of China's patent announcement, its LCD Panel is provided with the screen protection plate and prevents that display screen from sustaining damage, and baffle is for changeing.
The casing of above-mentioned these mobile phones, button and/or screen protection board member must be earlier respectively by assembling again after the processing procedure moulding separately, consumption worker more consuming time certainly and cost is higher.Therefore, need a kind of casing manufacture method, it integrates casing, button and screen protection plate processing procedure, so that reduce casing manufacturing, required time and the cost of assembling.
Summary of the invention
Purpose of the present invention is providing a kind of casing and manufacture method thereof exactly, makes casing promptly have casing exterior view layer, screen protection plate and button after manufacturing is finished, and reduces casing manufacturing, required time and the cost of assembling.
In order to reach above-mentioned purpose and other purposes, the present invention proposes a kind of casing manufacture method, at first, provides transparent plastic film layers, and uses printing ink to print a casing exterior view layer on first of plastic film layers outside viewfinder area.Then, in the die-cut at least one seam that isolates in button next door, and be coated with elastomeric layer on second of plastic film layers in plastic film layers, this elastomeric layer covers all buttons at least and isolates the key zone that seam constitutes.Then, plastic film layers is carried out pre-molding and rim charge cuts, form casing semi-finished product, and first face of plastic film layers is positioned at the half-finished inner surface of casing, second face of plastic film layers is positioned at surface outside the casing semi-finished product.At last, the plastics of fusion are injected to outside viewfinder area and key zone, form a shell layer on the half-finished inner surface of casing.
In order to reach above-mentioned purpose and other purposes, the present invention proposes a kind of casing manufacture method in addition, at first, provides transparent plastic film layers, and uses printing ink to print a casing exterior view layer on first of plastic film layers outside viewfinder area.Then, in plastic film layers in the die-cut at least one seam that isolates in button next door, and on second of plastic film layers coating one elastomeric layer, this elastomeric layer covers all buttons at least and isolates the key zone that seam constitutes.Then, plastic film layers is carried out pre-molding and rim charge cuts, form casing semi-finished product, and first face of plastic film layers is positioned at the half-finished inner surface of casing, second face of plastic film layers is positioned at surface outside the casing semi-finished product.At last, inject on the half-finished inner surface of casing the plastics of fusion in viewfinder area and isolate that seam is outer to form a shell layer, and on the inner surface of shell layer corresponding part formation projection with button.
In order to reach above-mentioned purpose and other purposes, the present invention proposes a kind of casing again, forms an inner space with the holding electronic part in order to engage with a corresponding pedestal.This casing comprises transparent plastic film layers, a casing exterior view layer, an elastomeric layer and a shell layer.Wherein, first of plastic film layers towards the inner space, and in plastic film layers in the die-cut at least one seam that isolates in button next door.Casing exterior view layer is printed on first of plastic film layers and goes up and in viewfinder area and this at least one isolating outside the seam.Elastomeric layer is coated on second of plastic film layers and goes up and cover all buttons at least and isolate the key zone that seam constitutes.Shell layer injects on the casing exterior view layer and outside viewfinder area and key zone by the plastics by fusion and is formed.In another embodiment, shell layer more comprise the plastics by fusion inject in the key zone and outside isolating seam formed part, and form a plurality of projections in corresponding part with button.
The present invention is because of adopting in-molded technology, use printing ink on first of plastic film layers, to print casing exterior view layer, and the coating of the key zone on second elastomeric layer, this plastic film layers being passed through pre-molding and rim charge cuts after the formation casing semi-finished product again, on casing semi-finished product inner surface, form a shell layer with injection molding method, promptly finish the manufacturing of casing.This casing promptly has casing exterior view layer, screen protection plate and button after manufacturing is finished, therefore reduce casing manufacturing, required time and the cost of assembling.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is the flow chart according to the casing manufacture method that one embodiment of the invention illustrated;
Fig. 2 A～2F is the course of processing schematic diagram of casing manufacture method shown in Figure 1 in regular turn;
Fig. 3 is the three-dimensional generalized section according to the casing that one embodiment of the invention illustrated;
Fig. 4 is the three-dimensional generalized section according to the casing that another embodiment of the present invention illustrated.
Description of reference numerals:
The 10-casing; 10 '-pedestal; The 11-viewfinder area; The 12-button; The 13-plastic film layers; First of 13a-plastic film layers; Second of 13b-plastic film layers; 14-casing exterior view layer; The 14a-background color; The 14b-decorative pattern; The 14c-symbol pattern; 15-isolates seam; The 16-key zone; The 17-elastomeric layer; The 18-shell layer; The plastics of 19-fusion; 20-casing semi-finished product; The half-finished inner surface of 20a-casing; Surface outside the 20b-casing semi-finished product; The 21-metal clips; The 22-printed circuit board (PCB); The 23-LCD Panel; The 31-mould; The 32-punching machine platform; 33-ejection formation board; The 40-casing; The 48-shell layer; The 49-projection;
S11-provides a transparent plastic film layers, and uses printing ink to print a casing exterior view layer on first of plastic film layers outside viewfinder area;
S12-in plastic film layers in the die-cut seam that isolates in button next door;
S13-is coated with an elastomeric layer on second of plastic film layers, it covers button at least and isolates the key zone that seam constitutes;
S14-carries out pre-molding to plastic film layers;
The plastic film layers of S15-after to pre-molding carries out rim charge and cuts, and forms casing semi-finished product;
S16-injects to the plastics of fusion and form a shell layer on the half-finished inner surface of casing outside viewfinder area and key zone.
Embodiment
Fig. 1 is for according to the flow chart of the casing manufacture method that one embodiment of the invention illustrated, and Fig. 2 A～2F be the course of processing schematic diagram of casing manufacture method shown in Figure 1 in regular turn, and Fig. 3 is the three-dimensional generalized section according to the casing that one embodiment of the invention illustrated; Please earlier with reference to Fig. 3, casing 10 and pedestal 10 ' for example are respectively the upper and lower casings of electronic installation such as mobile phone, both can engage and form a complete casing, the inner space of this complete casing is in order to ccontaining various electronic components, as metal clips 21, printed circuit board (PCB) 22, LCD Panel 23 etc.Casing 10 has a viewfinder area 11 and a plurality of button 12, and wherein the position of viewfinder area 11 corresponds to the position of LCD Panel 23.Referring again to Fig. 1 and Fig. 2 A～2F, the manufacture method of aforesaid chassis 10 can be divided into printed patterns, the other punching of button, coating elastomeric material, pre-molding in regular turn, rim charge cuts and six steps of ejection formation.
" printed patterns " in the step, please refer to S11 and Fig. 2 A of Fig. 1, a transparent plastic film layers 13 is provided, this plastic film layers 13 has first 13a and second 13b.Use printing ink on first 13a of plastic film layers 13 and in viewfinder area 11 place in addition, to print a casing exterior view layer 14.In the present embodiment, casing exterior view layer 14 include background color 14a, decorative pattern 14b and with button 12 corresponding symbol pattern 14c, wherein background color 14a for example is a black, and decorative pattern 14b for example is fish and pasture and water pattern, and symbol pattern 14c for example is patterns such as numerical key, function key.Because plastic film layers 13 is transparent, also can observe from second 13b direction so be printed on the casing exterior view layer 14 of first 13a.Moreover, because after casing 10 manufacturing finished, the user observed casing exterior view layer 14 from second 13b direction, so the casing exterior view layer 14 that prints on first 13a must allow the user can be observed normal pattern from second 13b direction.For example, as if the symbol pattern 14c that on first 13a, prints be
, then can be observed symbol pattern 14c and be " 5 " from second 13b direction.
" printed patterns " in the step, also may comprise a baking program at last, remove in order to the residual solvent of the printing ink that will be applied to plastic film layers 13.In addition, plastic film layers 13 all must be high temperature resistant with printing ink (or its casing exterior view layer 14 that prints), so that can bear the back " ejection formation " temperature of the plastics that penetrate in the step.Wherein, plastic film layers 13 for example is by Merlon (Poly Carbonate, abbreviation PC), polyethylene terephthalate (Polyethylene terephthalate, be called for short PET) or polymethyl methacrylate (Polymethylmethacrylate, be called for short PMMA, claim acryl or polymethyl methacrylate again) etc. transparent plastic made.Printing ink for example is the printing ink that comprises special materials such as noctilucence or fluorescent material, if symbol pattern 14c is printed by the printing ink that comprises noctilucence or fluorescent material, can make things convenient for the operation of dark place and increase gorgeous sense.
" the other punching of button " in the step, please refer to S12 and Fig. 2 B of Fig. 1, in plastic film layers 13, stitch 15 button 12 (or with button 12 corresponding symbol pattern 14c) die-cut at least one the isolating in next door.In the present embodiment, adopt isolating of four bendings to stitch 15, make each button 12 (or symbol pattern 14c) have the straight slit more than two on every side, these isolate seam 15 makes button 12 have more deformability when being pressed, and elp button 12 is easier to be pressed.Wherein, all buttons 12 (or symbol pattern 14c) and isolate the seam 15 places the zone constitute a key zone 16.
" the coating elastomeric material " in the step, please refer to S13 and Fig. 2 C of Fig. 1, coating one elastomeric layer 17 on second 13b of plastic film layers 13, this elastomeric layer 17 must cover key zone 16 at least, promptly covers button 12 (or symbol pattern 14c) at least and isolates seam 15.And elastomeric layer 17 preferably also must fill up the fracture spaces of isolating seam 15.Elastomeric layer 17 provides when discharging in order to the back that is pressed at button 12 elastic force elp button 12 resets, and the function of key zone 16 waterproof also may be able to be provided.In the present embodiment, elastomeric layer 17 is coated on second of plastic film layers 13 above the 13b and cover casing exterior view layer 14, promptly is equivalent to cover the whole casing 10 except viewfinder area 11, and it provides the sense of touch that is different from general hard casing.Moreover, before coating, can on second 13b of plastic film layers 13, be coated with an interface agent earlier to help the bonding of plastic film layers 13 and elastomeric layer 17.Wherein, elastomeric layer 17 for example is transparent rubber (rubber) or macromolecule (polymer) material.
" pre-molding " in the step, please refer to S14 and Fig. 2 D of Fig. 1, (its first 13a is printed with casing exterior view layer 14 with described plastic film layers 13, and second 13b is coated with elastomeric layer 17) be placed on the mould 31, wherein first of plastic film layers 13 13a is towards mould 31.With the formation vacuum of bleeding between plastic film layers 13 and the mould 31, press down with second 13b direction of high pressure simultaneously, to finish the pre-molding of plastic film layers 13 from plastic film layers 13.
" rim charge cuts " in the step, please refer to S15 and Fig. 2 E of Fig. 1, the plastic film layers 13 of pre-molding is placed on carries out rim charge on the punching machine platform 32 and cut, to form casing semi-finished product 20.At this moment, first 13a of plastic film layers 13 (being printed with casing exterior view layer 14 on it) is positioned at the inner surface of casing semi-finished product 20, and second 13b (being coated with elastomeric layer 17 on it) of plastic film layers 13 is positioned at surface outside the casing semi-finished product 20.
" ejection formation " in the step, please refer to S16 and Fig. 2 F of Fig. 1, insert casing semi-finished product 20 in the mould and be arranged to an ejection formation board 33, the inner surface 20a that then plastics 19 of fusion is injected to casing semi-finished product 20 goes up and the place beyond viewfinder area 11 and key zone 16 forms shell layer 18, and wherein shell layer 18 and casing semi-finished product 20 constitute casings 10.
Referring again to Fig. 3, it is the profile of casing 10; Casing 10 engages with pedestal 10 ' and forms a complete casing, and its inner space can ccontaining various electronic components, as metal clips 21, printed circuit board (PCB) 22, LCD Panel 23 etc.This casing 10 comprises transparent plastic film layers 13, casing exterior view layer 14, elastomeric layer 17 and shell layer 18, wherein plastic film layers 13 has first 13a and second 13b, first 13a be towards the inner space, and in plastic film layers 13 in button 12 next doors die-cut at least one seam 15 that isolates.With regard to configuration relation, dispose casing exterior view layer 14 on first 13a of plastic film layers 13, and then dispose shell layer 18 on the casing exterior view layer 14, and dispose elastomeric layer 17 on second 13b of plastic film layers 13.With regard to distribution relation, casing exterior view layer 14 is distributed in except that viewfinder area 11, isolates the place of stitching 15.Elastomeric layer 17 is distributed in a key zone 16 at least, and this key zone 16 is constituted by all buttons 12 and the zone of isolating seam 15 places, moreover elastomeric layer 17 preferably also must fill up to isolate and stitch 15 fracture spaces.Shell layer 18 is distributed in the place except that viewfinder area 11 and key zone 16.Because plastic film layers 13 viewfinder area 11 in does not print casing exterior view layer 14 also uncoated elastomeric layer 17, its as a screen protection plate to protect LCD Panel 23.To press metal clips 21 when button 12 is pressed, and make metal clips 21 touch printed circuit board (PCB) 22 and on printed circuit board (PCB) 22, form loop conducting electric current, the button 12 that response is pressed.This metal clips 21 is pressed at button 12 simultaneously provides elastic force elp button 12 to reset when the back discharges.
Fig. 4 is the three-dimensional generalized section according to the casing that another embodiment of the present invention illustrated; Please refer to Fig. 4, the manufacture method of this casing 40 can be divided into printed patterns, the other punching of button, coating elastomeric material, pre-molding in regular turn, rim charge cuts and six steps of ejection formation, and five steps before the manufacture method of the first five step and casing 10 shown in Figure 3 (are the step S11～S15) identical of Fig. 1, do not repeat them here.Because five steps are identical before the manufacture method of casing 10 and 40, so the component symbol of member made in these five steps is denoted as the same component symbol.In the manufacture method of casing 40, last step, i.e. " ejection formation " step, the plastics of fusion are injected on the inner surface of casing semi-finished product 20 shown in Fig. 2 F and form shell layer 48 at the viewfinder area 11 and the place of isolating beyond the seam 15, and on the inner surface of shell layer 48, form a plurality of projections 49 with button 12 corresponding places, wherein shell layer 48 and casing semi-finished product constitute casings 40.These projections 49 are in order to help to push corresponding metal shell fragment 21 when button 12 is pressed.In this embodiment, shell layer 48 is equivalent to comprise shell layer 18 as shown in Figure 3, and comprises that more the plastics with fusion inject to the local formed shell layer except that isolating seam 15 in the key zone 16, and is forming a plurality of projections 49 with button 12 corresponding parts.
In sum, casing manufacture method of the present invention is because of adopting in-molded technology, use printing ink printing casing exterior view layer on first of plastic film layers, and the coating of the key zone on second elastomeric layer, this plastic film layers being passed through pre-molding and rim charge cuts after the formation casing semi-finished product again, on casing semi-finished product inner surface, form a shell layer with injection molding method, promptly finish the manufacturing of casing.This casing promptly has casing exterior view layer, screen protection plate and button after manufacturing is finished, therefore reduce casing manufacturing, required time and the cost of assembling.In addition, by plastic film layers and the water proofing property that covers the elastomeric layer of key zone itself at least, make casing of the present invention also have water proofing property.
The above description of this invention is illustrative, and nonrestrictive, and those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within spirit that claim limits and scope, but they will fall within the scope of protection of the present invention all.
Claims (10)
1. casing manufacture method, this casing has a viewfinder area and a plurality of button, it is characterized in that, and this casing manufacture method comprises:
One transparent plastic film layers is provided, and this plastic film layers has first and second, and uses printing ink to print a casing exterior view layer on first of this plastic film layers outside this viewfinder area;
In this plastic film layers at the die-cut at least one seam that isolates in those buttons next door;
Be coated with elastomeric layer on second of this plastic film layers, this elastomeric layer covers at least that those buttons and this are at least one to isolate the key zone that seam constitutes;
This plastic film layers is carried out pre-molding;
This plastic film layers behind the pre-molding is carried out rim charge to cut, form casing semi-finished product, these casing semi-finished product have inner surface and outer surface, and first face of this plastic film layers is positioned at the half-finished inner surface of this casing, and second face of this plastic film layers is positioned at surface outside these casing semi-finished product; And
The plastics of fusion are injected to outside this viewfinder area and this key zone, form a shell layer on the half-finished inner surface of this casing.
2. casing manufacture method according to claim 1 is characterized in that this plastic film layers is made by Merlon, polyethylene terephthalate or polymethyl methacrylate.
3. casing manufacture method according to claim 1 is characterized in that this printing ink comprises noctilucence or fluorescent material.
4. casing manufacture method according to claim 1 is characterized in that this elastomeric layer comprises rubber or macromolecular material.
5. casing manufacture method, this casing has a viewfinder area and a plurality of button, it is characterized in that, and this casing manufacture method comprises:
One transparent plastic film layers is provided, and this plastic film layers has first and second, and uses printing ink to print casing exterior view layer on first of this plastic film layers outside this viewfinder area;
In this plastic film layers in the die-cut at least one seam that isolates in those buttons next door;
Be coated with elastomeric layer on second of this plastic film layers, this elastomeric layer covers at least that those buttons and this are at least one to isolate the key zone that seam constitutes;
This plastic film layers is carried out pre-molding;
This plastic film layers behind the pre-molding is carried out rim charge to cut, form casing semi-finished product, these casing semi-finished product have inner surface and outer surface, and first face of this plastic film layers is positioned at the half-finished inner surface of this casing, and second face of this plastic film layers is positioned at surface outside these casing semi-finished product; And
Inject on the half-finished inner surface of this casing the plastics of fusion at this viewfinder area and should at least onely isolate formation one shell layer outside the seam, and corresponding part with those buttons forms a plurality of projections on the inner surface of this shell layer.
6. casing manufacture method according to claim 5 is characterized in that this plastic film layers is made by Merlon, polyethylene terephthalate or polymethyl methacrylate.
7. casing manufacture method according to claim 5 is characterized in that this printing ink comprises noctilucence or fluorescent material.
8. casing manufacture method according to claim 5 is characterized in that this elastomeric layer comprises rubber or macromolecular material.
9. a casing has a viewfinder area and a plurality of button, forms an inner space with the holding electronic part in order to engage with a corresponding pedestal, it is characterized in that this casing comprises:
One transparent plastic film layers, it has first and second, first of this plastic film layers towards this inner space, in this plastic film layers in those die-cut at least one seams that isolates in buttons next door;
One casing exterior view layer, its first of being printed on this plastic film layers goes up and reaches this at least one isolating outside the seam in this viewfinder area;
One elastomeric layer, it is coated on second of this plastic film layers and goes up and cover at least that those buttons and this are at least one isolates the key zone that seam constitutes; And
One shell layer, its plastics by fusion inject on this casing exterior view layer and are formed at outside this viewfinder area and this key zone.
10. casing according to claim 9 is characterized in that, this shell layer comprises more that the plastics by fusion inject in this key zone and at least onely isolates formed part outside the seam in this, and this shell layer forms a plurality of projections in corresponding part with those buttons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810135410A CN101640987A (en) | 2008-08-01 | 2008-08-01 | Method for manufacturing shell and shell manufactured by method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810135410A CN101640987A (en) | 2008-08-01 | 2008-08-01 | Method for manufacturing shell and shell manufactured by method |
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| Publication Number | Publication Date |
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| CN101640987A true CN101640987A (en) | 2010-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200810135410A Pending CN101640987A (en) | 2008-08-01 | 2008-08-01 | Method for manufacturing shell and shell manufactured by method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196686A (en) * | 2010-03-12 | 2011-09-21 | 深圳富泰宏精密工业有限公司 | Shell of electronic device and manufacturing method thereof |
| CN103991252A (en) * | 2013-02-16 | 2014-08-20 | 爱元福科技股份有限公司 | 3D stereo explosion-proof glass explosion-proof membrane and preparation method thereof |
-
2008
- 2008-08-01 CN CN200810135410A patent/CN101640987A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102196686A (en) * | 2010-03-12 | 2011-09-21 | 深圳富泰宏精密工业有限公司 | Shell of electronic device and manufacturing method thereof |
| CN103991252A (en) * | 2013-02-16 | 2014-08-20 | 爱元福科技股份有限公司 | 3D stereo explosion-proof glass explosion-proof membrane and preparation method thereof |
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Open date: 20100203 |