Science: Inner Tube Substitute

A big missing link in synthetic rubber— a good, plentiful substitute for rubber in inner tubes—appeared last week to have been found. U.S. synthetic rubbers or soft plastics have been developed to do almost every other job that natural rubber can do. Last week aircraft manufacturer Glenn L. Martin announced that his research men had developed a new plastic which makes better inner tubes than nat ural rubber ever did.

The new material, which has no chemical resemblance to rubber, is a vinyl chloride plastic with unusual elastic properties. It contains a plasticizer (unidentified) that enables it to keep its elasticity up...

Want the full story?

Subscribe Now


Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!