标题: about pc+liquid silicon injection process for mobile keypad [打印本页] 作者: andy_lau0 时间: 2007-5-26 21:48 标题: about pc+liquid silicon injection process for mobile keypad Hi,everybody,Here have a question need you hlep,could you give your best advice for me,thanks at first.
If there are more methods about pc+liquid silicon injection process for mobile keypad? if we can use doule-injection molding or twice-injection molding,or single molded and stick together with glue? here need you give your each discussion to get a more better method to do it.expect you reply.thanks.Sample Text作者: aweizi 时间: 2007-5-26 22:49
Is there designfor keypad lightguide,all right?
I had undertaked the case like this , actually , we injected the pc sheet first, and then molding the silicon rubber with the pc sheet together .no glue , by molding
for your reference!
[ 本帖最后由 aweizi 于 2007-5-26 22:51 编辑 ]作者: vitingyi123 时间: 2007-5-27 00:34
E语不懂作者: andy_lau0 时间: 2007-5-27 09:24
Hi, guys,thanks for you help.as your talking,this is use twice-injection molding process,or comolding process.i talking before is about volume key and camera key,there are undercuts in the middle location of back surface,i think it could be take the method you said,and still could use the other method to do,for example,double-injection,etc.but i don't know which method is the best,of course we should consider it's cost and qulity and yeild rate,so could you please to compare it and prodive the best idea.作者: 86smith 时间: 2007-5-27 21:19
For this,genarally speaking the PC materials you need to do out of the mold frist and than inject the silicon rubber with the pc sheet together, and also this technical had maturely, if you want to try the new process i think that it should be having some risk...(only one advice).. but up till now i have never see the
Regard the twice-injection molding process, as the theoretically speaking it should be batter than twi-proce
ss and also the process simply. And as the analyse the twi-injection machina have two storer of the materials, and than one storer place the PC and other place sillice rubber to process i think it's very very good. but up till now i have never see it.. if you want to try the new process than you need to know more about it . finnally if you adopt a new technique than you can let me know by this platform.ok?作者: 86smith 时间: 2007-5-27 21:24
sorry, some mistake i made::
For this,genarally speaking the PC materials you need to do out of the mold frist and than inject the silicon rubber with the pc sheet together, and also this technical had maturely, if you want to try the new process i think that it should be have some risk...(only one advice)..
Regard the twice-injection molding process, as the theoretically speaking it should be batter than twi-process and also simply. As the analyse the twi-injection machine have two storer of the materials, and than one storer place the PC and other place sillice rubber to process i think it's very very good. but up till now i have never see it.. if you want to try the new process than you need to know more about it . finnally if you adopt a new technique than you can let me know by this platform.ok?作者: aweizi 时间: 2007-5-27 21:48
the proposal is case by case ,could you mind show some pictures?作者: andy_lau0 时间: 2007-5-28 20:00
Hi,upstairs friends,thanks for your advice,for your mentioned,perhaps i could show some simple pictures in here tomorrow.
aside to 86smith:you talking of twice-injection should be doule-injection for your original idea,you talking for the first method should be twice-injection or comolding,my colleague advice we should take double-injection process,but this technology is not mature,even we havn't this type machine,if we take common process,we could use sticking mothod or twice-injection,but liquid silicon should be called comolding process even use twice-injection,is that right?who can give a right reply about this?expect your reply!作者: qg01 时间: 2007-5-29 19:07
i suggest to show some picture to us for discussing ,what is your opinion?作者: lw_0828 时间: 2007-5-30 13:58
楼主洋文学的不错嘛作者: zhenghaitao 时间: 2007-6-21 11:53
you can take use of forming PC sheet first, then molding liquid silcon rubber with PC sheet . this will match your will, this process is very famoular in keypad field.作者: xj815 时间: 2007-6-22 07:20
i faint作者: andy_lau0 时间: 2007-6-23 11:34
thanks for your advice,the process you mentioned could also call it comolding process.i know it's a very mature process;作者: andy_lau0 时间: 2007-7-16 22:10
no body care about this note.support by myself.perhaps,this study is too simply.作者: bigshuimu 时间: 2007-7-22 12:14
Hi, andy, Aveizi, 86Smith, as you said, 3 methods for trying, Comolding, Double-injection& Sticking. According to my experience, Comolding is in its maturity. Double-injection is only now up to mass-production in Japan as I concerned, Taiwan and Main China is still use comolding Skill more. If you choose D-I, Self-adhexive LSR is needed, and the temperature of mold is up to 120deg.C, it is higher than normal for 20deg.C. The mold is exactly precise, so you must condider your mold manufacture ability. Comolding technics is more skillful, but the flow is more than D-I. Material is normal LSR, but there are many flash after comolding, you must add a step for flash-removing. Sticking method is a bit mad I think, for it is very hard for the glue spraying with complicated configuration.作者: summer22729 时间: 2007-10-14 04:31
but now it has a newest technology, co-molding, not twice injecting,should be one time injection.it only has a set of tool, but the injecting technology is different , very complex.