Both latex and Mylar (foil) balloons will deflate over time if not chemically treated on the outside to prevent the internal gas from escaping. Both untreated latex and foil balloons are not airtight.

Mainland scientists have discovered a "super material" that is as light as a balloon yet as strong as metal, which could be developed by the mainland's military into armour that protects troops ...

Art Thompson:There's a series of nylon strings that run through that balloon material to be able to carry the weight. 801:01:26:02 01:01:31:20Narrator:As the balloon climbs, the helium expands ...

Efforts to recover the balloon's equipment have been complicated by sea conditions and the possibility that the debris may include dangerous materials such as explosives or battery components.

Mr Hamblett produced the replica balloon in two months, attempting to make it float before a crowd on Monday. "We originally wanted to use the original materials - silk and taffeta - but the costs ...

Your partner should rub a little vegetable oil along the length of the skewer and carefully poke it through the thick, unexpanded material near the knot of the balloon. Don't take the skewer out. What ...

Purpose The purpose of this study is to investigate the treatment results, and procedure-related complications of stent-angioplasty for symptomatic intracranial arterial stenosis with Wingspan stent ...