A packaging material includes: an outer box that accommodates an article to be packaged; and a cushioning material including: a sealed bag body with gas confined inside; a partition that divides an inside of the bag body into a first chamber and a second chamber each in an equal volume; and a ventilation passage communicating the first and second chambers, the cushioning material being disposed in a gap between an outer surface of the article and an inner wall of the outer box.

An air spring with adjustable stiffness and a vehicle air suspension system are disclosed, belonging to the technical field of vehicle shock absorption device. The air spring comprises a main body consisting of an upper sealing plate, a lower sealing plate and a main air spring bellow, wherein an air spring bellow for adjustment is arranged in the main body, the air spring bellow for adjustment divides an inner space of the main body into different regions, with a region out of the air spring bellow for adjustment being a first region and a region inside the air spring bellow for adjustment being a second region. The first region and the second region are respectively connected to a high-pressure gas source, and a gas pressure in the first region and in the second region can be individually controlled.

An air spring having an airsleeve, wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includes at least one vulcanizable polymer, a curative, at least one halogenated hydrocarbon wax, and expandable graphite.

The invention relates to an article comprising a main body (6, 7, 8) that consists of a polymer material having elastic properties, particularly an air spring bellows (2), a metal-rubber element or a vibration damper. In order for fire-retardant properties to be improved, the article is provided, partially or fully, with a cover (9) formed from at least one flat textile structure and/or at least one three-dimensional textile structure and/or at least one shrink film. The cover can be fire-retardant itself or can be equipped to be fire-retardant.

The invention relates to an article (1) having a main body composed of a polymeric material having elastic properties, in particular an air spring bellows (1), a metal-rubber element or a vibration damper. In order to improve its fire-retardant and/or flame-retardant properties, the article has been provided partially or completely with a flock (9).

An air spring unit for a chassis of a motor vehicle, includes an air spring cover and an air spring piston, wherein an airtightly secured rolling bellows made of elastomer material partially delimits a working chamber between the air spring cover and the air spring piston, which working chamber can be filled with compressed air, wherein the rolling bellows is surrounded by a divided, sleeve-shaped outer guide having a first outer guide part and a second outer guide part.

The present invention is directed to an air spring sleeve comprising: an outer layer, at least one reinforcing layer, and an inner layer that form the sleeve; the outer layer and the inner layer are formed of an elastomeric composition, with the proviso that the elastomeric composition does not comprise epichlorohydrin; and the at least one reinforcing layer comprises a plurality of reinforcing elements disposed between a layer of the elastomeric composition, wherein the elastomeric composition of the at least one reinforcing layer is identical to the elastomeric composition of the outer layer and the inner layer.

A metal diaphragm damper is provided that is excellent in pulse absorption performance even with enhanced pressure resistance. The diaphragm damper includes a couple of diaphragms joined to each other at outer edge portions, forming an internal space in which high-pressure gas is sealed. The diaphragms are each formed of a metal thin film. At least one of the diaphragms has a multilayer structure with a plurality of metal thin films layered and fixed at its outer edge portion.

The invention relates to an article having a main body with elastic characteristics, in particular an air spring bellows, a metal-rubber element or a vibration damper.

The article has a single-layer or multilayer main body having elastic properties, wherein the outer layer C has at least two laminas C1/C2 and each lamina is formed from an elastomer mixture, and wherein at least one layer D composed of a weave or loop-formed knit or loop-drawn knit has been embedded into this outer layer.

This leads to further optimization of the fire-retardant properties.

The invention relates to an article having a single- or multi-layered main body having elastic properties, in particular an air spring bellows, a metal-rubber element or a vibration damper. In order to improve its flame retardant properties, the main body of the article consists of or contains at least one layer D constructed from a rubber mixture which is free from halogen-containing flame retardants and contains at least one carbon black having a BET surface area according to DIN-ISO 9277 between 35 and 140 m.sup.2/g and an oil absorption number (OAN) according to ISO 4656 between 70 and 140 ml/100 g and a first aluminum trihydrate (ATH_1) and at least a further aluminum trihydrate (ATH_2), wherein the first aluminum trihydrate (ATH_1) and the further aluminum trihydrate (ATH_2) each have a different particle size.