Abstract in simplified Chinese:本发明系揭露一种石膏板,其系包含一石膏基质,且此石膏基质中分布有相对石膏之至少1重量百分比(wt%)之一聚合添加物,此石膏基质更嵌有第一群组之纤维质料与第二群组之纤维质料,第一群组之纤维质料的平均长度是第二群组之纤维质料的平均长度的至少三倍。
Abstract:
A gypsum product has a first polymeric additive and a second polymeric additive distributed therein, wherein the first polymeric additive is a synthetic polymer and the second polymeric additive is starch. It has been found that the combination of starch and a synthetic polymer may result in one or more of the following advantages in the manufacture and performance of gypsum products: -increased strength; -greater ease of manufacturing due to the increased fluidity of stucco slurries containing both additives; and -increased resistance to hygroscopic expansion.
Abstract:
The product is produced from a settable aqueous calcium sulphate dispersion which has a water to solids ratio of less than 0.4 to 1, and has distributed therethrough lightweight hollow bodies having water-impervious surfaces (such as expanded polystyrene beads). The dispersion contains a hydratable cement (such as calcium sulpho aluminate) which is capable of hydration in the presence of the calcium sulphate dispersion. The hydratable cement is such that it reacts with excess water in the dispersion thereby enhancing the water resistance of the resulting product.
Abstract:
A laminated acoustic building panel comprises a pair of plasterboard substrates (10,13) which are bonded together by an adhesive layer (16), the panel having a dynamic Youngs modulus of 0.1 to 5 GPa and a damping loss factor of 5 - 30% (η = 0.05 0.3), and the ratio of the adhesive (16) to the applied surface area of the substrates (10,13) being 80 - 250 g/m2. The laminated panel is relatively soft in construction and hence sound waves caused by knocking or impact noise is surprisingly damped using considerably less adhesive (16) than known panels. The use of soft substrates (10,13) and less adhesive (16) significantly reduces the weight of the panel. Furthermore, the use of less adhesive (16) significantly reduces costs and makes production easier.
Abstract translation:层压声学建筑面板包括通过粘合剂层(16)结合在一起的一对石膏板基板(10,13),该面板的动态杨氏模量为0.1至5GPa,阻尼损耗系数为5-30% (α= 0.05〜0.3),粘合剂(16)与基材(10,13)的涂布面积的比例为80〜250g / m 2。 层压板在结构上相对较软,因此使用比已知面板少得多的粘合剂(16)令人惊奇地阻尼由敲击或冲击噪声引起的声波。 使用软质基材(10,13)和较少的粘合剂(16)可显着降低面板的重量。 此外,使用较少粘合剂(16)显着降低成本并使生产更容易。
Abstract:
Cette plaque est un complexe comportant un support rigide (2) revêtu d'un tissu lumineux (4). Le support rigide (2) présente une face avant (6), une face arrière (8), un premier bord (10) et un second bord (12) opposé au premier. Le tissu lumineux (4) recouvre au moins partiellement la face avant (6) en s'étendant du premier bord (10) vers le second bord (12) et comporte des fibres optiques (14) s'étendant sur la face avant (6) du support rigide (2) sensiblement perpendiculairement au premier bord (10) et au second bord (12). Des premières extrémités des fibres optiques (14) sont repliées autour du premier bord (10) vers la face arrière (8) du support rigide (2), et des moyens de serrage (26) sont prévus au niveau du premier bord (10) et forment une pince venant enserrer les parties repliées des fibres optiques (14) et le premier bord (10) du support rigide (2).
Abstract:
A plasterboard comprises a gypsum matrix having a polymeric additive distributed therein in an amount of at least 1 wt% relative to the gypsum, the gypsum matrix further having a first group of fibres and a second group of fibres embedded therein, wherein the fibres of the first group of fibres have an average length that is at least three times the average length of the fibres of the second group of fibres.
Abstract:
There is provided a cutting tool (100; 200; 300) which is capable of performing cutting operations on a variety of materials such as, for example, plasterboard, glass, wood, laminated wood, cardboard, Perspex (Trade Mark), tiles, plastics or the like. The cutting tool (100; 200; 300) comprises an upper and lower part (102, 104/202, 204; 302, 304) , said upper and lower parts (102, 104/202, 204/302, 304) being separated by spacing means which are preferably retractable, the upper and lower parts (102, 104/202, 204/302, 304) comprising at least one cutting device (116, 216, 316) , and wherein the upper and lower parts (102, 104; 202, 204/302, 304) are held together with magnetic attraction.