INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Injection Molded Multicolor Rubber...How's it Done?

Injection Molded Multicolor Rubber...How's it Done?

(OP)
See below for sample of decorated multicolor rubber that I would like to know how is manufactured. I am a plastics engineer at the beginning few years of my career at an injection molding company and we need to know how this can be done as we have a possible customer with a similar requirement.
I have one of these watchbands and some of the colored rubber overlays have come off the main black base and it looks to me like the details are almost dipped or painted to get the colored details. They are not injection molded onto there and are done nearly perfectly.
The Navy Seal insignia on the one side of the band has small details and is quite impressive in how this was made.


RE: Injection Molded Multicolor Rubber...How's it Done?

Wow. Those mouldings would be very difficult and expensive to injection mould in my opinion esp the emblem in the middle photograph. They would probably be best compression moulded as separate colours, then built up and, finally, the black part moulded around them to lock all the individual parts together.

RE: Injection Molded Multicolor Rubber...How's it Done?

(OP)
I agree that it would be very difficult and expensive to injection mold. I almost positive they are not injection molded as there's no visible gates and are so perfect which is nearly impossible to do with rubber molding.
From examining band that I have that began coming apart, the black background of the "Lumi Nox" shield is the base component with raised letters as part of the black. The black and white letters are a very thin layer of rubber that is on top of the raised black letters. It's done so perfectly which is why I can't figure out how it's done. The black and white letter layers are so very thin also and don't seem to be attached via glue.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close