tablets
tablets
(OP)
Hi all
i hope fhis is the correct place for this kind of questions..
i have a project where i need to glue a capsule or a tablet which is round shaped to a round shaped plastic mediator.this whole assembly at the end will be clinked to an handle to preform a certain task.the problem i have is with properly attaching the capsule to the mediator.the capsule is made of condensed powder and its like an alka zeltser tablet that you are all aquainted with.i undetstand that i need to use an elastic glue to attach it to the plastic surface but the problem is that in all my experiments so far the tablet either broke or detached from the mediator after a while leaviln a thin layer of the material where the glue was placed.i undetstand there might be an issue here of forces going from the plastic mediator fhrough the capsule and thus breaking it....so if the pladtic rxpands a bit immidately it transfers this gorce to the capsule and breaks it or cracks oit.
my questions to the experts here are ad follows:
1.how would you recommend best attachment between the capsule and mediator to have minimum breakage.
2.the diameter of both capsule and mediator are the same.would yoi recommend decreasing or increasing one of them vs the other to reduce the forces described above?
would appriciate any adviSe
ron
i hope fhis is the correct place for this kind of questions..
i have a project where i need to glue a capsule or a tablet which is round shaped to a round shaped plastic mediator.this whole assembly at the end will be clinked to an handle to preform a certain task.the problem i have is with properly attaching the capsule to the mediator.the capsule is made of condensed powder and its like an alka zeltser tablet that you are all aquainted with.i undetstand that i need to use an elastic glue to attach it to the plastic surface but the problem is that in all my experiments so far the tablet either broke or detached from the mediator after a while leaviln a thin layer of the material where the glue was placed.i undetstand there might be an issue here of forces going from the plastic mediator fhrough the capsule and thus breaking it....so if the pladtic rxpands a bit immidately it transfers this gorce to the capsule and breaks it or cracks oit.
my questions to the experts here are ad follows:
1.how would you recommend best attachment between the capsule and mediator to have minimum breakage.
2.the diameter of both capsule and mediator are the same.would yoi recommend decreasing or increasing one of them vs the other to reduce the forces described above?
would appriciate any adviSe
ron





RE: tablets
ˈmēdēˌādər/
noun
noun: mediator; plural noun: mediators
a person who attempts to make people involved in a conflict come to an agreement; a go-between.
RE: tablets
RE: tablets
RE: tablets
RE: tablets
Nylon net is cheap, comes in colors, and is available at any fabric store.
Mike Halloran
Pembroke Pines, FL, USA
RE: tablets
Could you glue the tablet onto a metal disk (weak/stiff onto strong/stiff) then glue the disk onto your mediator (strong/stiff onto strong/flexible)?
A.
RE: tablets
RE: tablets
If it is actually a capsule, I would use/try a blob of the gel (gelatine, whatever it is), of a fairly thick consistency, which makes up the outer skin of the capsule to glue the two together. If it is a tablet, maybe grind up a tablet, mix that grinding with a little glue and take a small ball of this to bind the two together. Both of these approaches may have to be done in some sort of a mold or a press, until the glueing component cured, dried and hardened. Would some form of epoxy work, at least to the extent that the tablet material had shear and bond strength near the glue joint. You could drill the tablet, and insert and epoxy a fine wire in the middle of the tablet. Could you form the tablet right around the plastic handle, like a popsicle. You’ll just have to experiment with this, it’s a fairly strange requirement/request.
RE: tablets
I have upoaded a few pictures to give you a beeter understandin of this issue.
the capsule needs to be exposed as it needs to touch a second surface during the process.
I have uploaded 4 pictures as follows:
1. Broken capsule residue on mediator
http://files.engineering.com/getfile.aspx?folder=7...
2. Assembly of capsule and mediator glued together and place on the wand
http://files.engineering.com/getfile.aspx?folder=f...
3. Stand alone casule and stand alone mediator (prior gluing them together)
http://files.engineering.com/getfile.aspx?folder=9...
4. Assembly of capsule and mediator after glue process.
http://files.engineering.com/getfile.aspx?folder=3...
As I stated above the problem I am facing is after I glue the capsule to mediator some capsules detaches from the mediator.
Any advise would be helpful.
Thanks guys
RE: tablets
RE: tablets
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RE: tablets
The glue must be compatible with the substrates. Solvents or water can weaken the tablet, as might the acetic acid released by RTV silicone. A hot-melt glue would probably be best for this application. Heating the tablet before bonding can help improve the bond for hot-melts.
RE: tablets
Mike Halloran
Pembroke Pines, FL, USA