Abstract:
A separator material for sub-grade, e.g. containing clay and/or silt, comprises a composite (60) formed of at least one layer of a geotextile material (52,54) and at least one layer of a nonwoven fabric (50) formed of polymeric fibres. The nonwoven fabric (50) is calendered so as to achieve a material that can filter out particles of clay/and or silt but is normally permeable to liquid. The nonwoven fabric (50) has a maximum pore size between 5 and 20 µm or between and 40 µm.
Abstract:
Processes and apparatus for manufacturing an engineered-composite combining rigid flat-rolled sheet metal continuous-strip (88) and selected polyester thermoplastics, which are formed into distinct polymeric layers (90) for melted extrusion deposition on a single surface, at a time, using pressure dies, and other steps, for forming a uniform coat of distinct polymeric layers (90), which provide high green-strength-adhesion during continuous-in-line travel; and including dual-surface finishing for complete bonding of the polymeric layers on both metallic surfaces which may include a non-ferrous metallic protective coating (89).
Abstract:
A composite formed of a polymer matrix phase having a reinforcement phase including polymeric microfibers. The microfibers are preferably formed of a highly oriented polymer, having a high modulus value and a large surface area. The large surface area can serve to tightly bind the microfibers to the polymer matrix phase. The microfibers can be provided as a fully- or partially-microfibrillated film, as a non-woven web of entangled microfibers, or as a pulp having free fibers. The microfibers can be embedded in, or impregnated with, a polymer or polymer precursor. Some composite articles are formed from thermoset resins cured about a highly oriented poylpropylene microfiber reinforcement phase, providing a strong, tough, moisture resistant article. One composite includes a matrix and reinforcement formed of the same material type and having substantially equal refractive indices, allowing the composite to be optically clear.
Abstract:
The present invention is a process for continuous extrusion coating the surfaces of a metal strip which includes the steps of moving said metal strip by means of a plurality of rolls. The strip then has impinged on its first and second surfaces to be coated an oxidizing flame. The first surface passes through a corona discharge and extruded onto the first surface is a melted polymeric extrudiate. Thereafter, the surface is passed over a chill roll having a temperature less than said extrudiate to provide a first coated surface. The second surface is then subjected to an oxidizing flame and corona discharge and a melted polymeric extrudiate is extruded onto the second surface. Thereafter, the second surface is passed over a chill roll having a temperature less than said extrudiate to provide a second coated surface. The coated strip is then reheated to about the melt temperature of said extrudiates and quenched to provide an extrusion coated strip of the present invention.
Abstract:
A transparent multilayer film made from a polymer substrate, preferably polypropylene, is modified by a maleic anhydride modified propylene polymer, which can be located on a surface of the substrate and/or incorporated within the substrate, has a skin layer of ethylene vinyl alcohol copolymer which is coated with a transparent gas barrier layer, such as a metal oxide, specifically, silicon monoxide, silicon dioxide, aluminum oxide, magnesium oxide, boron oxide, calcium oxide and barium oxide and a mixture of two or more of the foregoing oxides.
Abstract:
Composites of paper and bioriented plastic film, preferably polyester, are made by passing into and through the nip of a pair of nip rolls (13, 14) a web of paperboard (4) and a web of plastic film, with a layer of molten polymer impregnating and bonding agent (3) extruded into the nip between the webs on the entry side of the nip. The product as collected from the nip rolls (13, 14) is a composite (1) comprising paper partially impregnated with solidified polymer, a contiguous layer of solidified polymer having the new surface outwardly of the paper surface, and the plastic film bonded to the new surface.
Abstract:
본 발명은 단독사용 또는 단열재 내부에 구성품으로 사용하여도 고반사 및 저방사 기능을 가지도록 한 열반사단열재 제조장치 및 방법에 관한 것으로서, 가교발포폴리에틸렌시트를 공급하기 위한 피더와, 제조완료된 열반사단열재를 권취하기 위한 와인더를 전,후방에 가지고 구비되는 프레임과, 상기 프레임의 선측에 피더로부터 공급되는 가교발포폴리에틸렌시트에 다수개의 절개홈을 형성하도록 구비하는 절개부와, 상기 절개부의 후방에 절개홈이 형성된 가교발포폴리에틸렌시트의 폭을 넓히면서 절개홈이 통공으로 변형시키도록 설치하는 확장부와, 상기 확장부의 후방에 가교발포폴리에틸렌시트의 확장된 폭과 절개홈이 변형된 통공이 제 형상을 지속적으로 유지할 수 있도록 냉각롤러를 가지고 설치되는 냉각부와, 상기 냉각부의 후방에 폭이 넓어지고 통공이 형성된 가교발포폴리에틸렌시트에 고반사성과 저방사성을 발휘할 수 있도록 일면 또는 양면에 알루미늄필름를 부착시키도록 설치하는 합지부를 포함하는 것이 특징이다.
Abstract:
An elastic and resilient film for application to an endless moving handrail includes a first film layer having a top surface and a bottom surface and further including one or more materials selected from Thermoplastic Olefin (TPO), Thermoplastic Elastormer (TPE), Thermoplastic Ionomer Resins, metalized Thermoplastic Polyurethane, Thermoplastic Vulcanizate (TPV), Polyvinylidene Fluoride (PVDF), and Thermoplastic Polyurethane/Polyolefin blends, wherein a first adhesive is on a bottom surface of the first film layer, an optional second film layer has a top surface and a bottom surface, with print applied to the top surface of the first film layer and an adhesive is on the bottom surface of the second film layer, and a substantially transparent film layer overlying the top surface of the second layer.
Abstract:
The present invention relates to a method for manufacturing a material web, which reflects heat radiation, the method comprising manufacturing a layered pre-structure (3) comprising a first foil reflecting heat radiation (1), a first thermoplastic layer comprising material which has a first melting point, and a second thermoplastic layer (16) having a second melting point, which is lower than the first melting point, heating the surface of the second thermoplastic layer(16) to a temperature in which it starts to melt but which is lower than the first melting point, and attaching a reinforcement net (4) to the second thermoplastic layer (16). The present invention also relates to a material web which reflects heat radiation.
Abstract:
Methods and apparatus for producing composite-coated rigid flat-rolled sheet metal substrate in which thermoplastic polymeric materials are selected and combined for dual-layer molten-film extrusion presenting a first-contracting tie-layer and an externally-located finish-layer which are simultaneously extruded for a single substrate surface at-a-time; in which tie-layer selection includes an ethylene-glycol modified PET, requiring a substrate-surface temperature between 230°F and 300°F, and a maleic-anhydride modified polyethylene free of any substrate-surface heating requirement; the tie-layer provides sufficient green-strength-adhesion for a finish-layer selected from PBT, PET, and a combination of PBT and PET; each substrate-surface is separately activated for desired adhesion and separately polymeric coated; dual-surface finishing-processing is carried-out by remelting the coated polymeric materials for completing bonding of the dual polymeric layers on each inorganic-metallic protectively-coated surface of the substrate.