leathers : where a light buffing of the impregnated grain surface is mainly used. for buffing of skins, e.g. for velours, we recommend the grain sizes p -p . for high-performance buffing machiens it is important to keep the down times for buffing paper changes to a minimum. awuko papers satisfy these...
well as difficult and mechanically highly stressed sealed joints and non-standard joints or special dimensions in the chemical, petrochemical and nuclear industries, refineries and in power generation plants. the sealing sheets contain an oxidation as well a passive corrosion inhibitor and are impregnated...
with resin by painting and rolling layers are built up until desired thickness is achieved. curing may be done at room temperature or elevated temperature with accelerators and catalyst. filament winding it is a versatile technique where continuous tow or roving is first passed through a resin impregnated...
from these materials, not included in other classes printed matter bookbinding material photographs stationery adhesives for stationery or household purposes artists' materials paint brushes typewriters and office requisites (except furniture) instructional and teaching material (except apparatus) plastic...
with matrix material (or materials from which the matrix is made) before final assembly and processing, and are then referred to as a prepreg (pre-impregnated). thus, there is no need to handle the individual chemicals. it is simply rolled out and used as a laminate. curing is accomplished by heating...
the beads expand (figure ). these are subsequently blown into moulds and fused by further steaming and then cooling. the expanded poly(phenylethene) has good thermal insulation and shock absorbing properties. figure these poly(phenylethene) beads are shown prior to and after expansion. they were impregnated...