In a significant achievement, the Rubber Board has developed a smart new way ... Skim latex was acid-treated and packed into plastic sacks for two weeks, allowing it to solidify.

The Sewerage and Water Board in ... pipes in foam rubber or fiberglass sleeves. Customers can also use rags or newspaper. Be sure the wrapping is at least an inch thick. Add plastic wrap or ...

described a natural plastic material to the Royal Asiatic Society in London. Gutta-percha, created by boiling the sap of the Malayan gutta tree, was similar to rubber but lacked rubber's elasticity.