In at least one embodiment, a membrane filtration element is provided. The element may include at least one feed spacer including a first set of parallel strands extending in a first direction and including a plurality of first strands having a first thickness and a plurality of second strands having a second thickness that is smaller than the first thickness. A second set of parallel strands may extend in a second direction that is transverse to the first direction. The second set of parallel strands may include a plurality of third strands having a third thickness and a plurality of fourth strands having a fourth thickness that is smaller than the third thickness. In one embodiment, the first and second sets of strands include alternating thick and thin strands, which reduce pressure drop in membrane filtration systems.
Embodiments disclosed herein include a feed spacer for membrane separation system with an angle of less than 90 degrees, and generally less than 60 degrees; with a strand count of less than 9 by 9 per inch, and generally less than 7 by 7 per inch. Reduction in strand angle and reduction in strand count can demonstrate reductions in bio fouling, as well as prevent (or attenuate) increases in pressure drop.
Embodiments disclosed herein include a feed spacer for membrane separation system, comprising: a plurality of nodes, wherein the nodes are tapered in the direction of flow through the membrane separation system, and a plurality of strands, wherein at least one strand connects each node to another node. In an embodiment, a spacer for membrane separation system, comprises a plurality of nodes, wherein each node comprises an upstream portion and a downstream portion, and a plurality of strands, wherein at least two strands are connected to the downstream portion of each of the plurality of nodes, and the two strands connected to a downstream portion of a node are non-linear and define an arc that is concaved in the direction of the flow. Other embodiments are also included herein.
01 - Chemical and biological materials for industrial, scientific and agricultural use
11 - Environmental control apparatus
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
20 - Furniture and decorative products
22 - Rope, netting, tents, awnings, sails and sacks; padding and stuffing materials
Goods & Services
Chemicals for industry, scientific, photographic, agricultural, gardening and forestry purposes (except fungicides and preparations for destroying weeds and vermin), artificial resins and synthetic resins, plastics as raw materials in powder, liquid or paste form; natural fertilizers and artificial fertilizers; fire extinguishing compositions; chemical substances for preserving foodstuffs; tanning substances, adhesives for industrial purposes. Lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, plumbing and sanitary installations. Plastic foam materials for use in the manufacture of furniture; packaging materials included in Class 17; packings (jointings). Building materials (not of metal), nature and artificial stone, cement, lime, mortar, plaster and gravel; gres and cement pipes; structural reinforcement (non-metallic) for erosion control, soil reinforcement, drainage and stabilization of roads; asphalt, pitch and bitumen; monuments of stone; Agricultural nets for erosion control. Furniture, including mattresses and cushions, mirrors, picture frames of wood, cork, reed, reed, tea, horn, bone, ivory, whalebone, tortoiseshell, amber, mother of pearl, meerschaum, celluloid and substitutes for these materials or made of plastic products that is not included in other classes. Cord, rope, nets, tents, tarpaulins, sail, sacks (as far as not included in other classes); netting (not of metal or asbestos); nets, netting, net fabrics (not of metal or asbestos) for agricultural, horticultural and industrial use; netting (not of metal or asbestos) for packaging or wrapping of goods; netting for padding and stuffing materials; elastic netting for textile use; elastic netting for use in medical and hygienic products; netting as fillers or reinforcement for use as intermediates (non-finished products) in the manufacture of carpets, carpet underlayer, cushions, mattresses and box springs; Netting for agricultural and horticultural uses, namely collecting nuts ot leaves; net for birds; filling materials for upholsterers as far as not included in other classes (horsehair, kapok, feathers, seaweed, etc); raw fibrous textile materials; fillings of synthetic foam; felted fibrous padding and stuffing material for absorption of hydrocarbons.
In at least one embodiment, a membrane filtration element is provided. The element may include at least one feed spacer including a first set of parallel strands extending in a first direction and including a plurality of first strands having a first thickness and a plurality of second strands having a second thickness that is smaller than the first thickness. A second set of parallel strands may extend in a second direction that is transverse to the first direction. The second set of parallel strands may include a plurality of third strands having a third thickness and a plurality of fourth strands having a fourth thickness that is smaller than the third thickness. In one embodiment, the first and second sets of strands include alternating thick and thin strands, which reduce pressure drop in membrane filtration systems.
In at least one embodiment, a membrane filtration element is provided. The element may include at least one feed spacer including a first set of parallel strands extending in a first direction and including a plurality of first strands having a first thickness and a plurality of second strands having a second thickness that is smaller than the first thickness. A second set of parallel strands may extend in a second direction that is transverse to the first direction. The second set of parallel strands may include a plurality of third strands having a third thickness and a plurality of fourth strands having a fourth thickness that is smaller than the third thickness. In one embodiment, the first and second sets of strands include alternating thick and thin strands, which reduce pressure drop in membrane filtration systems.
B33Y 80/00 - Products made by additive manufacturing
B29C 47/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C 49/04)
In at least one embodiment, a wrapping material for use in covering an article on an automated packing machine includes an interconnected network of a plurality of machine-direction strands being integrally joined to a plurality of cross-direction strands to form a netting. A first film segment is situated overlapping and bonded to the netting to form a first machine-direction seal. A second film segment being spaced apart from the first film segment is situated overlapping and bonded to the netting to form a second machine-direction seal. The first or the second seal has a wave height maximum, crest-to-trough, of less than 0.25 inches. The wrapping material is capable of use without jamming the automated packing machine and without rupturing the first or second seal and processed about an article.
The present invention provides a mesh bag for use with automated wicket bagging machines. In at least one embodiment, the mesh bag comprises a tubular mesh having a first end portion opposite a second end portion, a first wicketing strip attached to the second end portion of the mesh and having a peripheral edge, and a second wicketing strip attached to the second end portion of the mesh, wherein the second wicketing strip extends beyond a top edge of the mesh and the peripheral edge of the first wicketing strip and has at least one opening adapted for collating a plurality of mesh bags on one or more wicket pins. The present invention also relates to a method for making such bags.
B31B 1/90 - Attaching accessories not otherwise provided for, e.g. opening or closure devices, tear strings
B31B 23/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from webs, e.g. from flattened tubular webs
A surface support structure is provided with at least one cell having a plurality of upright walls. A first wall of the plurality of upright walls has a recessed portion forming at least a portion to allow extension and contraction in multiple directions of the at least one cell. The plurality of upright walls of the at least one cell define a perimeter such that the recessed portion extends towards a second wall of the plurality of upright walls and is within the perimeter.
The present invention provides a degradable extruded netting. The netting comprises a plurality of interconnected strands with at least some of the strands comprising a degradable composition comprising a polyolefin and a metal carboxylate. The present invention also relates to a method for making degradable extruded netting. The method comprises extruding strands of polymeric material to form a netting wherein at least some of the strands are formed of the degradable composition.
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
D01F 6/46 - Monocomponent man-made filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
The present invention provides a water management building wrap that may be useable between a frame structure of a building and an exterior building covering. In at least one embodiment, the building wrap comprises a permeable membrane and an extruded polymeric drainage structure secured to the second side of the membrane. In at least one embodiment, the drainage structure includes a plurality of generally vertical members having a first thickness and forming boundaries for generally vertical water drainage channels, and a plurality of generally horizontal members attached to the generally vertical members and having a second thickness less than the first thickness and forming integral joints at intersections of the generally vertical members and the generally horizontal members that provide dimensional stability to maintain the orientation of the generally vertical members and form stable vertical water drainage channels.
According to one aspect of the present invention, a filter assembly for removing particulate matter from a fluid stream is disclosed. The filter assembly includes a filter medium having a number of longitudinally extending spaced pleats. Opposing faces of adjacent pleats form a valley therebetween and include a pair of peak portions and a valley portion. The filter assembly further includes a plastic support net being pleated for supporting the filter medium in a pleated shape. The plastic support net includes spaced strands extending in a first direction and spaced strands extending in a second direction that is generally transverse the first direction. The strands extending in the first direction continuously extend over the valley and peak portions of opposing faces of adjacent filter medium pleats and are aligned in a direction substantially perpendicular to the longitudinal direction of the filter medium pleats.
One embodiment of the present invention provides a layered plastic netting. The netting can include a first outer layer comprised of a first polymeric material, an inner layer comprised of a second polymeric material, and a second outer layer generally opposed to the first outer layer and comprised of a third polymeric material. The first polymeric material can be comprised of first relatively low melt temperature (LMP) polymeric material. The second polymeric material can be comprised of a relatively high melt temperature (HMP) polymeric material. The third polymeric material can be comprised of a second relatively LMP polymeric material differing from the first relatively LMP polymeric material.
In at least certain embodiments of the present invention, the present invention provides a plastic netting for use in various erosion control netting assembles. In at least one embodiment, the assembly comprises a first extruded plastic net, a second extruded plastic net secured to the first net, and a fiber matrix disposed between the nets. In at least another embodiment, the assembly comprises a first extruded plastic net, and a fiber matrix secured to and/or under the netting. In at least another embodiment, the net serves as a mulch control netting when secured to the ground over a mulch material. In yet another embodiment, the net serves as a turf reinforcement. In at least one embodiment, the net comprises a plurality of openings sufficiently sized, to enable small animals to traverse or weave through the erosion control netting assembly without getting trapped in the openings.
The present invention provides a water management building wrap that may be useable between a frame structure of a building and an exterior building covering. In at least one embodiment, the building wrap comprises a permeable membrane and an extruded polymeric drainage structure secured to the second side of the membrane. In at least one embodiment, the drainage structure includes a plurality of generally vertical members having a first thickness and forming boundaries for generally vertical water drainage channels, and a plurality of generally horizontal members attached to the generally vertical members and having a second thickness less than the first thickness and forming integral joints at intersections of the generally vertical members and the generally horizontal members that provide dimensional stability to maintain the orientation of the generally vertical members and form stable vertical water drainage channels.
According to one aspect of the present invention, a filter assembly for removing particulate matter from a fluid stream is disclosed. The filter assembly includes a filter medium having a number of longitudinally extending spaced pleats. Opposing faces of adjacent pleats form a valley therebetween and include a pair of peak portions and a valley portion. The filter assembly further includes a plastic support net being pleated for supporting the filter medium in a pleated shape. The plastic support net includes spaced strands extending in a first direction and spaced strands extending in a second direction that is generally transverse the first direction. The strands extending in the first direction continuously extend over the valley and peak portions of opposing faces of adjacent filter medium pleats and are aligned in a direction substantially perpendicular to the longitudinal direction of the filter medium pleats.
The present invention provides a degradable extruded netting. The netting comprises a plurality of interconnected strands with at least some of the strands comprising a degradable composition comprising a polyolefin, a metal carboxylate, and an aliphatic poly hydroxy-carboxyl acid. In at least one embodiment, at least 10% of the strands are made of the degradable composition. The present invention also relates to a method for making degradable extruded netting. The method comprises extruding strands of polymeric material to form a netting wherein at least some of the strands are formed of the degradable composition.
The present invention provides a biodegradable extruded netting. The netting comprises a plurality of interconnected strands with at least some of the strands comprising a biodegradable composition comprising polylactic acid polymer and biodegradable plasticizer. In at least one embodiment, at least 10% of the strands are made of the biodegradable composition. The present invention also relates to a method for making biodegradable extruded netting. The method comprises extruding strands of polymeric material to form a netting wherein at least some of the strands are formed of the biodegradable composition.
