摘要:
A PET nonwoven fabric for a separator for a secondary battery includes first fibers composed of PET having a melting temperature of 240° C. or more and second fibers composed of PET having a melting temperature of 180˜220° C., respective fibers having two types of fibers having different diameters, and has a fine pore size and uniform pore distribution and exhibits superior surface properties, low surface defects, high mechanical strength and excellent mass production. Even when the temperature of a battery is increased to 200° C. or more, the PET nonwoven fabric has heat resistance which prevents thermal runaway and does not generate melting and shrinking.
摘要:
Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2 or more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 μm or less.
摘要:
A blown micro-fiber filtration unit having multiple overlapping layers of fibrous material and an active material applied over said layers. The fibrous material layers being fused together.
摘要:
A high performance absorbent particulate composition and a method of preparation in which a non-colloidal solid filler core is substantially encapsulated within a layer of hydrogel forming polymer is disclosed. Also disclosed are absorbent devices using the high performance absorbent particulate composition and methods of making these devices.
摘要:
A non-woven fabric having improved absorbent characteristics. The fabric has three different fiber arrays which are interconnected to produce a unique fiber distribution in the fabric.
摘要:
Microfiber microwebs are provided. The microfiber microwebs have relatively dense nuclei with individual fibers and/or fiber bundles protruding therefrom. The microfiber microwebs can be incorporated into nonwoven webs of blown microfibers, air-laid staple fibers, or wood pulp fibers as well as into shaped articles having porous covering materials. The microfiber microwebs are useful in sorbent, filtration, and thermal insulation materials. The microfiber microwebs are prepared by divellicating a microfiber web to form discrete particles of microfiber microwebs.
摘要:
Particle-laden meltblown material, methods for forming such material, composite laminate fabrics using such material as a layer of the laminate, and uses of such material and/or laminate thereof are disclosed. The particle-laden meltblown material is a coform of the particles and meltblown fibers, consolidated into a meltblown material. The meltblown fibers are made of polymeric materials such that the fibers are tacky after extrusion from the meltblowing die and prior to consolidation as meltblown material; active particles (such as active carbon) are incorporated in the stream of meltblown fibers, as the fibers pass from the die to the consolidation surface, at a location where the fibers are tacky, so that the particles adhere to the surface of the fibers. The polymeric materials forming the meltblown fibers can be elastomeric materials, and/or blends of polymers. The formed meltblown material can be used as a layer of a laminate, with other layers of the laminate providing abrasion resistance and mechanical strength. The meltblown material, and/or laminate including the meltblown material, can be used for gas/vapor filtering and/or adsorbing, and specifically can be used for disposable vacuum cleaner bags and the like.
摘要:
Apparatus for and methods of forming, from a single column of fibers, an airlaid fibrous web having a multiplicity of components. The apparatus is of the type which includes a first laydown drum having a first foraminous forming element; a second laydown drum having a second foraminous forming element; a splitter chute apparatus for splitting a column of fibers into a multiplicity of fiber streams and for entraining each of the fiber streams in air so as to provide a multiplicity of streams of air-entrained fibers; a first deposition chute for directing a first stream of air-entrained fibers from the splitter chute to the first laydown drum; a second deposition chute for directing a second stream of air-entrained fibers from the splitter chute to the second laydown drum; a dusting layer deposition chute for directing a dusting layer stream of air-entrained fibers from the splitter chute to the first laydown drum; and a uniting apparatus for uniting a first web component that is formed on the first laydown drum with a second web component that is formed on the second laydown drum to form an airlaid fibrous web having a multiplicity of components.
摘要:
The invention generally provides for formation of meltblown material containing wood fiber on to a continuous foraminous belt. During formation a polymer and wood fiber first layer is applied to a moving belt from at least one bank of meltblown forming apparatus. This first layer does not contain superabsorbent. The belt carrying the first layer passes beneath at least one further source of meltblown fiber into which superabsorbent is added along with the wood fibers. This provides at least one additional layer integrally connected to the first-formed layer and having superabsorbent properties. The first layer acts to aid in trapping of any superabsorbent which is not immediately entangled in the meltblown and wood fibers and prevents it passing through the forming belt.
摘要:
The present invention provides a layered absorbent structure, the structure having an upper surface and a lower surface. The structure comprises:(a) n webs of fibrous material, n being an integer of two or more. The webs are layered such that there is an uppermost web, a lowermost web, n-2 intermediate webs, and n-1 interfaces of two opposed adjacent contacting surfaces of adjacent webs. Each of the interfaces has a surface area.(b) Absorbent particles forming a discontinuous layer at one or more of the interfaces.The opposed adjacent contacting surfaces at each interface where particles are present are substantially entirely frangibly bonded by fiber entanglement between the contacting surfaces. The particles are immobilized at said interface(s) substantially entirely by fiber entrapment.