- Country of manufactureRussia
- TypeMoisture proof
Gypsum plasterboards of KNAUF are the construction and finishing material applied to facing of walls, the device of interroom partitions, false ceilings, fireproof coverings of designs and also for production of decorative and sound-absorbing products. When using gypsum plasterboards in the course of finishing works inconvenient "wet" processes are excluded, labor productivity considerably increases, the opportunity of realization unlimited as envisioned is given, multiple architectural concepts, including the device of curvilinear surfaces, the general economy of costs of construction due to simplification of a design of the building is reached, not only ecological purity, but also a microclimate, favorable for the person, indoors is provided. Technological process of production of gypsum plasterboards includes formation on the conveyor of a continuous flat strip with the section of the set form (demanded thickness and type of lateral edges), 1200 mm wide, the reinforcing additives consisting of two layers of a special cardboard with a layer from the plaster test with, at the same time lateral edges of a strip zavaltsovyvatsya by edges of a cardboard (a front layer). Further, after plaster "skhvatyvaniye", there is a cutting of a strip on single sheets, and also drying, marking stacking and packing of finished goods. Plaster which possesses as building material exclusive physical and technical properties is applied to formation of the core. Materials on the basis of plaster possess ability to breathe, that is to absorb excess moisture and to allocate it in environment at a shortcoming. Plaster is a nonflammable, fire-resistant material, it does not contain toxic components and has the acidity similar to acidity of human skin, its production and use does not exert an adverse effect on environment. For achievement of the necessary indicators of the plaster core characterizing its durability, density etc. the special components raising it operational properties are added to it. Other HL major component is the facing cardboard which coupling with the core is provided due to application of the gluing additives. The cardboard plays a role of the reinforcing cover, and along with it is a fine basis for putting any finishing material (plaster, wall-paper, paint, a ceramic tile, etc.). On the physical and hygienic properties the cardboard is ideally suited for premises.
Differ from usual in a special impregniro-bathing cardboard, and also hydrophobic and anti-fungal additives in core material. Are applied as well as usual HL, and also in buildings and rooms with damp and wet moisture conditions on Construction Norms and Regulations of II-3-79 * with providing with exhaust ventilation and on condition of protection of a front surface, for example: a waterproofing, waterproof primers, paints, a ceramic tile, coverings from polyvinyl chloride. Are recommended for the device of false ceilings.
The assessment of durability of gypsum plasterboards at a bend is carried out by results of tests of several samples. (3 longitudinal and 3 cross) from party. Tests are carried out on the samples 400 mm wide established on support with flight of L = 40*s where s - leaf thickness. Results of tests (arithmetic average) have to correspond to data of the table.
|Thickness of sheets, mm||Ultimate load, N (kgf), not less||Deflection, mm, no more|
|for longitudinal samples||for cross samples||for longitudinal samples||for cross samples|
|to 10||450 (45)||150 (15)||-||-|
|from 10 to 18 (in a key.)||600 (60)||180 (18)||0,8||1,0|
|over 18||500 (50)||-|
Durability of the sheets issued by KNAUF exceeds minimum admissible values. For example, for sheets 12,5 mm thick the ultimate load for longitudinal samples sometimes makes 730 N.
|Type of a leaf||Weight is 1 sq.m, kg||s - nominal thickness of a leaf in mm.|
|HL||no more 1,0*s|
|KLO, GKLV, GKLVO||from 0,8*s to 1,06*s|
The mass of the usual sheet KNAUF, the sizes of 2500х1200х12,5 mm (3 sq.m) makes about 29 kg.