Method for producing thin-walled articles from plastic or rubber

摘要

An unfoamed permeable material, which absorbs and desorbs moisture satisfactorily and which is suitable for making thin-walled articles having a maximum thickness of 3 mm, is based on plastic and/or rubber mixtures containing macromolecular hydrophilic fillers. The hydrophilic fillers are synthetic, water insoluble, cross-linked macromolecular materials containing pendent polar groups, which are able to bind water reversibly, e.g. hydroxy, amine, amide, carboxylic and sulfonic groups in H+, Na+, K+, Li+, Ca++, or Ba++ form, or quaternary ammonium groups in CH-, Cl- or HSO4- form.