Abstract: According to an embodiment, a system for tightening an article about a limb includes a reel based closure system having a tension member that is guided about the article and tensionable to close or tighten the article and a reel based tightening mechanism that is configured to tension the tension member and to maintain the tension member's tension so that the article remains closed or tightened. The system also includes a strap having a first end that is attached to a first edge of the article and a second end that is operably coupled with the reel based closure system so that tensioning of the tension member causes the strap to be tensioned. An intermediate portion of the strap spans a portion of an opening of the article and is slidingly positioned within a ring component that is attached to a second edge of the article.

Abstract: Disclosed are processes for rotational molding of thermoplastic polyesters and for hollow articles produced therefrom. The thermoplastic polyesters have a crystallization half time of at least 10 minutes and an inherent viscosity of 0.55 to 0.70 dL/g. Additional thermoplastic polymers may be used to produce multilayered articles.

Abstract: A cylindrical element is manufactured by a process which includes depositing successive layers of thermoplastic materials in a cycle by rotation moulding, or by a technique enabling a deposit of successive layers, the cycle including at least one deposit by rotation moulding or by a technique enabling deposit of successive layers at a temperature from 170 to 240° C. The cylindrical element contains at least one layer containing an ethylene-vinyl alcohol copolymer with a density at the above temperature of between 0.94 and 1.4, and a melt flow index of between 1.3 and 4.2 g/10 minutes.

Abstract: This invention relates to a process for making a cylindrical element by rotation moulding, or by a technique enabling deposit of successive layers, and a element obtained by the said process.