In a handrail including a carcass, a stretch inhibitor within the carcass, and a sliding layer bonded to the carcass, at least a portion of the carcass has a gas phase dispersed in a solid polymer matrix. The gas phase can reduce a density of the carcass by at least 5% or 10%, or about 15%, as compared to a density of the polymer matrix. The carcass can have a generally uniform distribution of gasbubbles in the polymer matrix, which can define a generally closed cell structure in the polymer matrix. The gas phase can be formed of particles of a syntactic foam dispersed in the polymer matrix.The handrail can further include a cover. The carcass and the cover can be formed of thermoplastic materials, and the cover can represent between 10 and 30% of the overall TPU required for the handrail.
一种扶手,包括骨架、位于所述骨架中的拉伸抑制件,以及结合至所述骨架的滑动层,所述骨架的至少一部分包括分散在固体聚合物基质中的气相。与聚合物基质的密度相比,气相可以使所述骨架的至少一部分的密度降低至少5%、或10%、或约15%。骨架可以具有大致均匀分布在聚合物基质中的气泡,其可以在聚合物基质中限定大致密闭的孔结构。气相可以由分散在聚合物基质中的复合泡沫的颗粒形成。扶手还可以包括覆盖件。所述骨架和所述覆盖件可以由热塑性材料形成,并且所述覆盖件可以占扶手所需的总TPU的10%至30%。
COMPOSITE HANDRAILS WITH REDUCED DENSITY CARCASS
一种具有降低的密度的骨架的复合扶手
05.01.2021
Patent
Elektronische Ressource
Chinesisch