摘要:
The present invention provides containment liners to protect the environment from spills and leaks at oil and/or gas production sites and other sites. The containment liner comprises a first felt geotextile layer and a polymeric barrier layer embedded partially into the felt geotextile layer.
摘要:
A composition capable of increased impermeability against the passage of ionic liquids therethrough can include a clay mixed with an anionic and cationic polymer. Such compositions can be provided in geosynthetic liners to provide a hydraulic barrier in aggressive leachate environments.
摘要:
The present invention is directed to a nonwoven fabric made from a composite of nonwoven and pulp where the nonwoven has a high loft derived from a heat set three-dimensional relief structure and/or hydroengorged fiber structure. A nonwoven web is hydraulically treated to create a hydroengorged material having an increased loft. Alternatively a nonwoven web is treated to have a heat set three-dimensional relief structure. The treated web is then hydroentangled with pulp to form a cotendered nonwoven/pulp composite fabric.
摘要:
A non-woven product containing organic and/or mineral particles has a volume density less than 1 and has at least two layers of synthetic fibers or filaments superposed in the Z direction perpendicular to the XY plane of the product, having undergone at least one needling operation, where the non-woven product integrates particulate feedstocks of mineral and/or organic particles distributed in a monomodal or multimodal manner in the product and at least partially coated or encapsulated by binding material that can point-connect the filaments or fibers to one another. At least one population or fraction of organic and/or mineral particles, has a size such that: 3×(√{square root over (SMf)})3≦v, preferably 5×(√{square root over (SMf)})3≦v, where SMf corresponds to the mean cross-section of the fibers or filaments that form the layers, and v represents the mean individual volume of the organic or mineral particles.
摘要:
A composition capable of increased impermeability against the passage of ionic liquids therethrough can include a clay mixed with an anionic and cationic polymer. Such compositions can be provided in geosynthetic liners to provide a hydraulic barrier in aggressive leachate environments.
摘要:
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.
摘要:
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.
摘要:
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.
摘要:
A method of manufacturing a multi-axial laminate of webs produced from cables stretch broken into strips includes arranging, at an entry of a conveyor table, a first layer of pre-wound pre-cut strips along the longitudinal axis of the table, the strips being partially superimposed; arranging along the table at least two cross lappers transferring and depositing in an oblique and/or divergent position at predetermined angles a stretch broken strip; and arranging the strips in successive superimpositions on the first layer of pre-cut strips in different planes, to form a multi-axial web of stretch broken strips. The web then being treated by a fixing device. Movement of the support belt of the table taking place in steps to ensure the superimposition of the different layers of pre-broken strips deposited by the cross lappers. Implementation of the method taking place without any prior cohesion treatment of each strip.
摘要:
A non-woven fabric (1) modified by activated carbon is needled onto an elastic or inelastic textile sheet material (2), preferably a woven fabric or a knitted fabric. By this method, the strength of the textile sheet material (2) can be imparted to a non-woven fabric (1) that is otherwise not tear-resistant, wherein the adsorption properties of the activated carbon necessary for protective textiles are completely retained. The elastic or inelastic textile sheet material (2) is stretched or retained stretched while the non-woven fabric is needled on and is relaxed after the non-woven fabric has been needled on. The effect thereby achieved is that the non-woven fabric (1) does not tear if the textile good or the molded part is stretched again, because the non-woven fabric is then stretched from a compressed initial state.