Wirenet Image Band
wirenet.org mobile image band

WAI Forums

Joomla

× If you have a question regarding coaxial, telephone, and building wire, power cable, insulation, extrusion, bunching, stranding, braiding, etc. post it here.

Nylon Tubing

  • Archived Forum Admin
  • Archived Forum Admin's Avatar Topic Author
  • Offline
  • Platnium Boarder
  • Platnium Boarder
More
12 years 2 months ago #359 by Archived Forum Admin
Nylon Tubing was created by Archived Forum Admin
Does any one know why the tooling for nylon (tubing) should be 12:1. In other words, the tip(guider) should be 3.46 times the wire OD (3.46 = the square root of 12). If we running a wire 0.300" then the tip OD should be 1.040".

Please Log in to join the conversation.

  • Archived Forum Admin
  • Archived Forum Admin's Avatar Topic Author
  • Offline
  • Platnium Boarder
  • Platnium Boarder
More
12 years 2 months ago #360 by Archived Forum Admin
Replied by Archived Forum Admin on topic Re: Nylon Tubing
The relationship between tip and die and final product dimensions involves the DDR (Draw Down Ratio) and the DRB (Draw Ratio Balance). These numbers will be different for different resins and different processing conditions. A simple calculator is located at www.bhtool.com/calculator.htm

You would be advised to discuss directly with both the resin supplier and the tooling and/or crosshead manufacturer to get the proper Balance and Ratio numbers for your particular resin. Experience will provide you with a proper range of tooling sizes that you can live with for any particular product.



Erik Macs
VP North American Machinery Sales
Fine International Corporation
148 Oak Street
Natick, MA 01760 USA
508-315-8200 fax: 615-658-1988
This email address is being protected from spambots. You need JavaScript enabled to view it.

Please Log in to join the conversation.

Moderators: Erik A MacsPeter J Stewart-Hay
Time to create page: 0.087 seconds

Gallery

Contact us

The Wire Association Int.

71 Bradley Road, Suite 9

Madison, CT 06443-2662

P: (203) 453-2777