Toothbrush?

[eintnl]

Anybody here made molds for toothbrushes? Curious about the process, moreso the addition of the bristles. Appreciate anybody shedding some light.

Cheers, Paul.

[KBW]

Just out side Xanadu China, in the northern Provence there is an old woman in a small house with a table a pocket knife and a large roll of tooth brush brissle material. She meticulously cuts each one and inserts them one by one into each hole, 50 brissles per hole 50 holes per brush. She's very good at what she does and very fast also.
Her pay is a can of sardines and a good a** beating on Friday.
Now with that back ground knowledge: does your tooth brush ever smell like fish?

[eintnl]

It isn't your mother is it?

[dcd121]

KBW ,
Are you truly mean spirited or does your attempt at humor just seam that way?

[Rekd]

Funny, I was thinking about that this morning as I was putting my toothbrush away. Will be interesting to hear the answer..

'Rekd

[eintnl]

Rekd,

Appreciate your reply.

Met and worked with many toolmakers and have yet come across anybody who has made or even designed a mold for this. The reason why i am so curious is regarding whether or not the mold has a feeding mechanism to mold in the bristles or whether this is simply just a secondary process etc.

Cheers, Paul.

[abasir]

Not my area but the following results from google search may give some ideas
http://www.radiustoothbrush.com/inde...n=Custom&ID=28

Extract
"the bristles (made elsewhere I assumed) are fused with heat and the resulting tuft is placed into a molding machine with others and the molding machine makes the handle, head and the tufts into one. In fusion bristling the bristles are polished before the injection molding stage"

[eintnl]

abasir,

Thanks for the link. Interesting reading...

Paul.

[leberen]

"The major drawback to staple set bristling is that the depth of the hole into which the tuft is placed and the required thickness of the head behind it, make the total head dimension (tip of bristles to back of head plate) quite thick."

That'd be a tuft job to do by hand

[Geof]

Originally Posted by leberen That'd be a tuft job to do by hand

Heh zone administrator we need an emoticon for GROAN

[DJPLAST]

Back years ago Dr. Boy (a dentist) could not find anyone to build "his" toothbrush. He designed and built his own molding machine/mold to accomplish this task. Today Boy Molding Machines are world class machines still in production and available world wide.

[leberen]

from 14 to 100 tons... 24/7 production....I wounder what Dr. Boy's first machine did in comparison to these specs.