Talk:Elastic

there needs to be a page on solely Elastic Bands, like the ones in your pants[edit]

The only page that mentions fabric elastic is the one on elastomers which is just a garbled page of different kinds of rubbers and polymers. somebody write one up

Theory behind elasticity[edit]

Does anyone know exactly why rubber and the like stretch? what are the mechanics involved? i have previously heard two theories, and i was wondering which of them (if either) is true:

elasticity is caused by the bonds along the carbon backbone of a polymer bending back and form, with the bonds always reforming the prefered angle of 109°
carbon to carbon bonds stretching laterally, with the electrostatic attraction reasserting the original dimensions

i realise that they are both very similar, and in reality the reasoning is probably somewhere inbetween. could an expert please explain, and type it into the article? cheers, mastodon 20:56, 4 November 2005 (UTC)[reply]

In my understanding, what happens in rubber is that the polymer chains which are disoriented in the unstretched state, align when a stress is applied.Hence the length increases considerably, up to a point.

The reason the material returns to the previous state (or near enough) is that the polymer chains are crosslinked between each other by Sulphur bridges - the material has been "vulcanised". Therefore, once the stress is removed, the crosslinks force the polymer chains back to their original disoriented

ACH 20:48, 6 December 2005 (UTC)[reply]

this is part[edit]

This is part of what i am looking for but just not all. Thank You anyways.屌你呀..唉..成班仆街係到屈我-.-

Elastic materials as components in contour fashion[edit]

The encyclopedia seriously needs an article on the uses of elastic materials - of the polymeric variety - in contour fashion, which I believe is the fashioning of garments, often of an intimate nature, such as underclothing. Composite ribbons of material containing threads of polymer - commonly called 'elastic' themselves - revolutionised the design of many garments, even types of garment, in their rendering unnecessary many of the fastenings (buttons, hooks, material ties, etc.) that are needed to maintain them in position on the human body. More recently, the technique of weaving 'elastic' threads into materials in general has allowed garment design to encompass completely new concepts in clothing, mostly to do with 'figure-hugging' garments. — Preceding unsigned comment added by CliffordDorset (talk • contribs) 06:51, 7 January 2012 (UTC)[reply]