Underlayment

	Underlayment Underlayment may refer to: * Underlay, a material placed underneath floor carpet, other flooring materials, or mattress bedding * Underlayment, a water-resistant or waterproof layer used beneath many types of commercially available roofing material Bituminous waterproofing, systems designed to protect residential and commercial buildings SDM strength film, a kind of High Density Polyethylene (HDPE) Cross Laminated Strength Film ** Tar paper, a heavy-duty paper used in construction * Underlayment in road construction such as nonwoven fabric * Underlay, a material in sewing * Underlay, a technique in some types of surgery such as myringoplasty * Underlay, a material in printing Printing is a process for mass reproducing text and images using a master form or template. The earliest non-paper products involving printing include cylinder seals and objects such as the Cyrus Cylinder and the Cylinders of Nabonidus. The ... {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Bituminous Waterproofing Bituminous waterproofing systems are designed to protect residential and commercial buildings. Bitumen (asphalt or coal-tar pitch) is a mixed substance made up of organic liquids that are highly sticky, viscous, and waterproof. These systems are sometimes used to construct roofs, in the form of roofing felt or roll roofing products. Roofing felt Roofing felt (similar to tar paper) is the base material used to make roof shingles and roll roofing. Used for decades as waterproof coverings in residential and commercial roofs, these bitumen compositional membranes incorporate two layers. The first underside polymer membrane is used as a solid background, often reinforced with glass fibers. Mineral granules make up the self-protective top layer, with a final bituminous mixture encapsulating them both. Typical uses of felt paper are as an underlay(ment) (sarking) beneath other building materials, particularly roofing and siding materials, and is one type of membrane used in asphalt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Underlay Underlay may refer to flooring or roofing materials, bed padding, or a musical notation. Flooring Underlay or underlayment"Underlayment." ''The Oxford English Dictionary''. 2nd ed. 1989. generally refers to a thin layer of cushioning made of materials such as sponge rubber, foam, felt, crumb rubber, or recycled plastic; this material is laid beneath carpeting to provide comfort underfoot, to reduce wear on the carpet, and to provide insulation against sound, moisture, and heat."Underlay." ''The Oxford English Dictionary''. 2nd ed. 1989. In general, it is a layer which is underneath another layer, so ''underlay'' is thus also used to describe many different surface-covering products. In vinyl flooring or "linoleum", the underlay is the thin layer of plywood that is fastened over the structural subfloor to create a uniform, smooth platform for the sheet vinyl. For laminated wooinstallation of flooring the underlay provides a “vapor barrier” to prevent moisture from coming thro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	List Of Commercially Available Roofing Material Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting structure. Those types of roofing material which are commercially available range from natural products such as thatch and slate to commercially produced products such as tiles and polycarbonate sheeting. Roofing materials may be placed on top of a secondary water-resistant material called underlayment. Steep Slope Roofing Materials Steep Roof Materials are roofs that are only recommended where water can freely and openly drain off the edge of the roof without retaining water for too long. The aim is to drain off water completely due to the high water permeability of most of these materials, for instance: the Thatched roofs. In areas where the I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	SDM Strength Film SDM Strength Film known by the processing names Cross-Laminated Films and Strength Films, is a kind of High Density Polyethylene (HDPE) Cross Laminated Strength Film. Because of proprietary cross-laminated process, SDM Strength Film is very strong and find many application. Conception of SDM The SDM means Spiral cut, Double-laminated and Machine direction drawing. It is the processing name for this kind of films. Structure There is only one molecular orientation for the normal HDPE films. So, along this direction, HDPE films have a bigger tensile strength, but weak properties in the other direction. Second drew by +45° Second drew by -45° Cross Laminated SDM Strength Film is laminated film by ±45°two second drew films. So in every direction of the films, there are strong properties. Manufacturing Method The whole process of producing SDM Strength Films consists of some steps: they are film making, spiral cutting and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Tar Paper Tar paper is a heavy-duty paper used in construction. Tar paper is made by impregnating paper or fiberglass mat with tar, producing a waterproof material useful for roof construction. Tar paper is distinguished from roofing felt, which is impregnated with asphalt instead of tar, but these two products are used the same way, and their names are sometimes used informally as synonyms. Description Tar paper has been in use for centuries. Originally, felt was made of recycled rags, but modern felt is made of recycled paper products, typically cardboard, and sawdust. The most common product is #15 felt. Before the oil crisis, felt weighed about per square, hence the asphalt-impregnated felt was called "15-pound felt" (15#). Modern, inorganic mats are no longer the same weight, and to reflect this fact, the new felts are called "number 15 felt" (#15). Modern #15 mats can weigh from pounds per square, depending on the manufacturer and the standard to which felt is made (such as , , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Nonwoven Fabric Nonwoven fabric is a fabric-like material made from staple fibre (short) and long fibres (continuous long), bonded together by chemical, mechanical, heat or solvent treatment. The term is used in the textile manufacturing industry to denote fabrics, such as felt, which are neither woven nor knitted. Some non-woven materials lack sufficient strength unless densified or reinforced by a backing. In recent years, non-wovens have become an alternative to polyurethane foam. Applications Nonwoven fabrics are broadly defined as sheet or web structures bonded together by entangling fiber or filaments (and by perforating films) mechanically, thermally or chemically. They are flat or tufted porous sheets that are made directly from separate fibres, molten plastic or plastic film. They are not made by weaving or knitting and do not require converting the fibres to yarn. Typically, a certain percentage of recycled fabrics and oil-based materials are used in nonwoven fabrics. The percentag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Sewing Sewing is the craft of fastening or attaching objects using stitches made with a sewing needle and thread. Sewing is one of the oldest of the textile arts, arising in the Paleolithic era. Before the invention of spinning yarn or weaving fabric, archaeologists believe Stone Age people across Europe and Asia sewed fur and leather clothing using bone, antler or ivory sewing-needles and "thread" made of various animal body parts including sinew, catgut, and veins. For thousands of years, all sewing was done by hand. The invention of the sewing machine in the 19th century and the rise of computerization in the 20th century led to mass production and export of sewn objects, but hand sewing is still practiced around the world. Fine hand sewing is a characteristic of high-quality tailoring, haute couture fashion, and custom dressmaking, and is pursued by both textile artists and hobbyists as a means of creative expression. The first known use of the word "sewing" was in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Myringoplasty Myringoplasty is the closure of the perforation of pars tensa of the tympanic membrane. When myringoplasty is combined with removal of scar tissue, it is called tympanoplasty. The operation is performed with the patient supine and face turned to one side. The graft material most commonly used for the surgery is temporalis fascia. The tragal cartilage and tragal perichondrium are also used as the graft by some surgeons. Myringoplasty restores hearing loss in certain cases of tinnitus. The chances of re-infection and persistent discharge is less after surgery. Myringoplasty should not be performed if there is active discharge from the middle ear, or if the patient has uncontrolled nasal allergy, or when the other ear is dead and in children less than 3 years of age. Myringoplasty is often done under general anaesthesia, but it can be done under local anaesthesia also. Technique of surgery Underlay technique The temporalis fascia is grafted. An incision is made along the edge of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]