Abstract: A linear friction welding system in one embodiment includes a welding control system operably connected to a hydraulic press and a ram, the welding control system including a processing circuit operably connected to a memory and configured to execute program instructions stored in the memory to bring a shaped charge portion of a first component to be welded into contact with a second component to be welded, and establish an initial scrub load pressure between the two components based upon a ratio between initial surface area of a contact initiation portion of the shaped charge portion and a final surface area of the first component. The processing circuit increases pressure between the components from the initial scrub load pressure to a target scrub load pressure before terminating oscillation of the ram and establishing or maintaining a weld load pressure.

Abstract: Multilayer reflective polarizers are described. In particular, multilayer reflective polarizers that include both crystalline high index layers and low index layers are disclosed. These reflective polarizers may be particularly suitable for combiner applications, including automotive heads up display applications with demanding ambient environments. Layers are made of PET and PETG.

Abstract: A substrate including a self-supporting tri-layer stack is described. The tri-layer stack includes first and second outer layers and a biaxially oriented layer disposed between and in direct contact with the first and second outer layers. The biaxially oriented layer may include a first polyester having greater than 45 mole percent naphthalate units and greater than 45 mole percent ethylene units. Each of the first and second outer layers includes a second polyester which may include 40 to 50 mole percent naphthalate units, at least 25 mole percent ethylene units, and 10 to 25 mole percent of branched or cyclic C4-C10 alkyl units.

Abstract: A cam assembly in a linear friction welding system includes two power shafts. Each of the shafts have two timing gears mounted thereupon. For one of the shafts, one of the timing gears includes a slot extending within the timing gear which is formed as an arc about a center of rotation of the power shaft. The other timing gear on that shaft includes a fixed pin which extends into the slot. A cross-over shaft is operably connected to both power shafts.

Abstract: A retarder including first and second outer layers and a birefringent layer disposed between and in direct contact with the first and second outer layers is described. The birefringent layer may include a first polyester having greater than 45 mole percent naphthalate units and greater than 45 mole percent ethylene units. Each of the first and second outer layers includes a second polyester which may include 40 to 50 mole percent naphthalate units, at least 25 mole percent ethylene units, and 10 to 25 mole percent of branched or cyclic C4-C10 alkyl units. The retarder has a retardance in a range of 1 micrometer to 100 micrometers.

Abstract: The present invention relates to a compound according to general formula (I) wherein X represents N or CH; R1 is —CN, (C1-C6)alkyl, (C3-C7)cycloalkyl, (3-7 membered)heterocycloalkyl, (5-6 membered)heteroaryl, (C3-C7)cycloalkyl(C1-C4)alkyl, (3-7 membered)heterocycloalkyl-(C1-C4)alkyl or (5-6 membered)heteroaryl-(C1-C4)alkyl; R2 is halogen, cyano, (C1-C4)alkyl or (C3-C7)cycloalkyl; R3 is halogen, cyano, (C1-C4)alkyl, (C1-C4)haloalkyl or (C3-C7)cycloalkyl; R4 is (C1-C4)alkyl or (C1-C4)haloalkyl; R5 is (C1-C6)alkyl, (C3-C7)cycloalkyl, (C1-C6)alkyl-(C3-C7)cycloalkyl, (C3-C7)cycloalkyl-(C1-C6)alkyl, (3-7 membered)heterocycloalkyl, phenyl, (5-6 membered)heteroaryl or —ORa. The invention further relates to said compounds for use in therapy, to pharmaceutical compositions comprising said compounds and to intermediates for preparation of said compounds.

Abstract: Substrates suitable for use in a touch sensor are described. In some cases, the substrates include an inner layer and first and second heat-set polymeric outer layers. The first and second outer layers each have an in-plane birefringence of less than 0.1. The inner layer is substantially uniaxially birefringent and has an in-plane birefringence greater than 0.01. In some cases, a substrate includes a block copolymer which includes a first polyester and second polyester. The first polyester has a melting point greater than 200 ° C., and the second polyester having a melting point less than 200° C. The block copolymer includes the second polyester at 50 to 80 percent by weight. The substrate is substantially uniaxially birefringent and has an in-plane birefringence between 0.001 and 0.1.

Abstract: A linear friction welding system in one embodiment includes a ram configured to oscillate along a welding axis, and a first and second power shaft operably connectable to the ram through a vibrating assembly. Respective motors are configured to drive respective power timing gears fixedly connected to the first and second power shafts. A slave timing gear is operably connected to the first power shaft in variable rotational relationship and to the second power shaft in fixed rotational relationship. The first slave timing gear is configured to be driven by one power shaft to force oscillation of the ram and by the other power shaft to stop oscillation of the ram.

Abstract: Multilayered polymer films are configured so that successive constituent layer packets can be delaminated in continuous sheet form from the remaining film. The new films are compatible with known coextrusion manufacturing techniques, and can also be made without the use of adhesive layers between layer packets that are tailored to be individually peelable from the remainder of the film. Instead, combinations of polymer compositions are used to allow non-adhesive polymer layers to be combined in such a way that delamination of the film is likely to occur along a plurality of delamination surfaces corresponding to interfaces between particular pairs of layers for which the peel strength is reduced relative to the peel strength at other layer interfaces within the film. The absence of an adhesive between peelable layer packets results in the delamination being irreversible.

Abstract: Processing tapes for use in preparing optical articles include a thermally stable tape backing and a low tack adhesive layer at least partially coated on tape backing. The low tack adhesive layer includes a crosslinked, polyester-containing (meth)acrylate-based polymer that is essentially free of volatile components, is unchanged after heat aging of 150 C for 1 hour under a pressure of 4.31 kiloPascals, and is able to removably adhere to the anti-reflective, nanostructured surface coating of an optical construction.

Abstract: Multilayered polymer films are configured so that successive constituent layer packets can be delaminated in continuous sheet form from the remaining film. The films are compatible with known coextrusion manufacturing techniques, and can be made without adhesive layers between layer packets that are tailored to be individually peelable from the film. Instead, combinations of polymer compositions are used to allow non-adhesive polymer layers to be combined such that irreversible delamination of the film is likely to occur at interfaces between layer packet pairs. Some polymer layers, including at least one embedded layer, may include an ultraviolet (UV) light stabilizer such as a UV absorber, antioxidant, or hindered amine light stabilizer (HALS), and these layers may be positioned at the front of each layer packet. After the UV-stabilized layer of one packet has been used, the packet can be peeled away to expose a new UV-stabilized layer of the next layer packet.

Abstract: The present disclosure relates to films having at least a first profiled layer and a second layer having an inverse profile of the first layer. Those films can be used as protection tapes for various surfaces. Exemplary uses of the films of the present disclosure include leading edge protection tapes for rotor blades.

Abstract: Multilayered polymer films are configured so that successive constituent layer packets can be delaminated in continuous sheet form from the remaining film. The films are compatible with known coextrusion manufacturing techniques, and can be made without adhesive layers between layer packets that are tailored to be individually peelable from the remainder of the film. Instead, combinations of polymer compositions are used to allow non-adhesive polymer layers to be combined such that irreversible delamination of the film is likely to occur at interfaces between layer packets pairs. Some of the polymer layers, including at least one embedded layer, comprise an antimicrobial agent, and these layers may be positioned at the front of each layer packet. After the antimicrobial layer of one layer packet has been used, the packet can be peeled away to expose a pristine antimicrobial layer of the next layer packet. The antimicrobial agent may be organic.

Abstract: The present invention relates to a compound according to general formula (I) wherein X represents N or CH; R1 is —CN, (C1-C6)alkyl, (C3-C7)cycloalkyl, (3-7 membered)heterocycloalkyl, (5-6 membered)heteroaryl, (C3-C7)cycloalkyl(C1-C4)alkyl, (3-7 membered)heterocycloalkyl-(C1-C4)alkyl or (5-6 membered)heteroaryl-(C1-C4)alkyl; R2 is halogen, cyano, (C1-C4)alkyl or (C3-C7)cycloalkyl; R3 is halogen, cyano, (C1-C4)alkyl, (C1-C4)haloalkyl or (C3-C7)cycloalkyl; R4 is (C1-C4)alkyl or (C1-C4)haloalkyl; R5 is (C1-C6)alkyl, (C3-C7)cycloalkyl, (C1-C6)alkyl-(C3-C7)cycloalkyl, (C3-C7)cycloalkyl-(C1-C6)alkyl, (3-7 membered)heterocycloalkyl, phenyl, (5-6 membered)heteroaryl or —ORa. The invention further relates to said compounds for use in therapy, to pharmaceutical compositions comprising said compounds and to intermediates for preparation of said compounds.

Abstract: A method of operating a linear friction welding system in one embodiment includes establishing a ram vibration amplitude by positioning a stop of a phase change assembly and positioning the phase change assembly in different configurations to establish different phase relationships between two eccentrically engaged power shafts while one of the power shafts is driven by a timing component and the other power shaft is driven by the timing component through the phase change assembly. In one phase change assembly configuration a ram operably connected to one of two components to be welded does not vibrate when the first power shaft and the second power shaft rotate while in another phase change assembly configuration the ram vibrates. Pressure between the two components is controlled to provide scrub pressure when the ram vibrates and forge pressure when the ram is no longer vibrating.

Abstract: Multi-layer films, and processes to make the films, that enable the delivery of a substrate featuring a peelable thin layer of low haze, amorphous, isotropic film with the desired properties of high modulus, high usage temperature, UV blockage, and toughness The films are made using a co-extrusion, co-orientation and annealing process to enable the delivery of a thin isotropic, UV blocking layer on top of a release layer and support substrate. These film constructions can be kept together during additional processing steps such as coating and converting. The release and dimensionally stable substrate layer can be easily removed once processing steps are completed.

Abstract: Barrier assemblies including ultrathin barrier laminates and methods of making the barrier assemblies are provided. A barrier assembly includes a thermoplastic polymer skin layer having opposite first and second major surfaces, and a barrier stack coated on the first major surface of the thermoplastic polymer skin layer to form an integral protective layer having a thickness no greater than about 0.5 mil (about 12.7 microns). The removable carrier film has a major surface releasably attached to the second major surface of the thermoplastic polymer skin layer. In some cases, the removal of the carrier film results in ultrathin barrier laminates.

Abstract: A linear friction welding system in one embodiment includes a welding control system operably connected to a hydraulic press and a ram, the welding control system including a processing circuit operably connected to a memory and configured to execute program instructions stored in the memory to bring a shaped charge portion of a first component to be welded into contact with a second component to be welded, and establish an initial scrub load pressure between the two components based upon a ratio between initial surface area of a contact initiation portion of the shaped charge portion and a final surface area of the first component. The processing circuit increases pressure between the components from the initial scrub load pressure to a target scrub load pressure before terminating oscillation of the ram and establishing or maintaining a weld load pressure.

Abstract: A linear friction welding system in one embodiment includes a ram configured to oscillate along a welding axis, and a first and second power shaft operably connectable to the ram through a vibrating assembly. Respective motors are configured to drive respective power timing gears fixedly connected to the first and second power shafts. A slave timing gear is operably connected to the first power shaft in variable rotational relationship and to the second power shaft in fixed rotational relationship. The first slave timing gear is configured to be driven by one power shaft to force oscillation of the ram and by the other power shaft to stop oscillation of the ram.

Abstract: A method of operating a linear friction welding system in one embodiment includes positioning a phase change assembly driven by a motor in different configurations to establish different phase relationships between two eccentrically engaged power shafts while one of the power shafts is driven by the motor and the other power shaft is driven by the phase change assembly. In one phase change assembly configuration a ram operably connected to one of two components to be welded does not vibrate when the first power shaft and the second power shaft rotate while in another phase change assembly configuration the ram vibrates. Pressure between the two components is controlled to provide scrub pressure when the ram vibrates and forge pressure when the ram is no longer vibrating.