3011 results about "Polymer thin films" patented technology

The invention relates to novel fluorene derivatives, which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the fluorene derivatives, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

Novel catheter constructions comprising thin covering or wrapping materials such as polymer films. A catheter provided with a guidewire catheter lumen having a thin covering that is easily punctured by a guidewire at virtually any desired point along the catheter length. The thin covering may be integral with the catheter shaft, or may be a separate component that covers only the portion of the catheter shaft immediately adjacent the outer portion of the guidewire lumen, or may be a thin tubular construct that surrounds the entire catheter shaft. Moreover, polymer film can be used in combination with one or more elements to produce novel catheter constructions.

The invention relates to novel calamitic mesogenic compounds which are especially suitable for use in birefringent films with negative optical dispersion, to novel liquid crystal (LC) formulations and polymer films comprising them, and to the use of the compounds, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices.

Novel catheter constructions comprising thin covering or wrapping materials such as polymer films. A catheter provided with a guidewire catheter lumen having a thin covering that is easily punctured by a guidewire at virtually any desired point along the catheter length. The thin covering may be integral with the catheter shaft, or may be a separate component that covers only the portion of the catheter shaft immediately adjacent the outer portion of the guidewire lumen, or may be a thin tubular construct that surrounds the entire catheter shaft. Moreover, polymer film can be used in combination with one or more elements to produce novel catheter constructions.

This invention relates to resealable closure systems that are useful in containers, such as those used in packaging goods. The reclosure system features cohesive layers which are bonded to each other to provide a resealable closure. The cohesive bond layers are separable to provide opening of the container and access to the interior of the container and/or contents. The cohesive layers have low blocking characteristics. The reclosure systems are useful for flexible packaging, such as polymeric film and cloth packages, and rigid packaging, such as fiberboard, cardboard, paper, and polymeric foam. The reclosure systems may be opened and resealed multiple times. The closure system is resistance to contamination by oils, debris, solvents, and water. The reclosure is cold sealable with finger pressure.

Methods and systems for manufacturing an implantable medical device, such as a stent, from a tube with desirable mechanical properties, such as improved circumferential strength and rigidity, are described herein. Improved circumferential strength and rigidity may be obtained by inducing molecular orientation in materials for use in manufacturing an implantable medical device. Some embodiments may include inducing molecular orientation by expansion of a molten annular polymer film. Other embodiments may include inducing circumferential molecular orientation by inducing circumferential flow in a molten polymer. In certain embodiments, circumferential orientation may be induced by expansion of a polymer tube. Further embodiments may include manufacturing an implantable medical device from a biaxially oriented planar polymer film.

A protected polymeric film comprises a polymeric film substrate having a first major surface and a second major surface opposite the first major surface, and a protective structure provided on at least the first major surface of the substrate, wherein the protective structure comprises a layer of boron oxide and an inorganic barrier layer. A protective structure may also be provided on the second major surface of the substrate. Organic electronic components may be formed on or attached to the protected polymeric films.

A disposable absorbent article for wearing about the lower torso of a wearer, the disposable absorbent article may include a first waist region, a second waist region, a crotch region disposed between the first and second waist regions; a first waist edge and a second waist edge; and a first longitudinal edge and a second longitudinal edge. The disposable absorbent article may include a chassis comprising a topsheet, a backsheet comprising a polymeric film, an absorbent core disposed between the topsheet and the backsheet. The polymeric film may be at least 20 mm more narrow than the chassis. An opacity strengthening patch may be disposed on the backsheet.

A highly specific and versatile surface chemistry for immobilization of amine-terminated probes is disclosed. A bi-layered polymer thin film serves as the platform for coupling the probes, which are preferably oligonucleotides. The process involves sequentially coating a substrate with polyamine and polyacid anhydride. Hydrolyzed polyacid anhydride groups may be converted to non-hydrolyzed groups at about 100° C. prior to probe attachment. The process of coating the substrate requires no harsh chemical pretreatment of substrates such as RCA or Piranha cleaning. In addition, simple thermal activation of the anhydride groups has a low requirement for storage, leading to a long shelf life of modified surfaces. The disclosed surface chemistry is especially compatible with microfabrication processes, and its effective application to magnetic biosensors is demonstrated.

An absorbent garment comprises an absorbent member and a laminate. The laminate comprises a polymeric film layer and a nonwoven layer, wherein both the polymeric film layer and the nonwoven layer extend substantially throughout the entire area of the laminate. At least a portion of the absorbent member longitudinally overlaps at least a portion of the laminate to define in the laminate an overlapped region and a non-overlapped region. At least a portion of the overlapped region of the laminate is non-elastomeric, and at least a portion of the non-overlapped region of the laminate is elastomeric. In particular embodiments, the laminate is an elastomeric film laminate having an elastomeric film layer, and at least a portion of the overlapped region of the elastomeric film laminate is deactivated.

Fuse-type and antifuse-type semiconducting-organic-polymer-film-based memory elements for use in memory devices are disclosed. Various embodiments of the present invention employ a number of different techniques to alter the electrical conductance or, equivalently, the resistance, of organic-polymer-film memory elements in order to produce detectable memory-state changes in the memory elements. The techniques involve altering the electronic properties of the organic polymers by application of heat or electric fields, often in combination with additional chemical compounds, to either increase or decrease the resistance of the organic polymers.

To provide a lighting unit which: does not greatly affect the design of a light guide plate; and has a long lifetime, high efficiency, and a wide color reproduction range by means of a phosphor. In view of the foregoing, the lighting unit of the present invention is constituted in such a manner that a phosphor bead or a phosphor film is arranged on at least one of the light irradiation plane of a light guide plate, the rear surface of the light guide plate, and the light incidence plane of the light guide plate. In addition, a phosphor film is constituted by using: a phosphor bead formed of a phosphor particle and a water-impervious material with which the phosphor particle is coated so that the particle is confined in the material; and a polymer film holding the phosphor bead.

A chewing gum comprising at least one active pharmaceutical ingredient (API) with a core onto which is applied at least one inner polymer film coating and thereafter onto which is applied at least one outer hard coating. A preferred API is nicotine. Flavoring agents may be incorporated in the core, in the at least one inner polymer film coating and/or in the at least one outer hard coating. The gums formed exhibit a long lasting effect of flavoring agent(s) and result in the domination of flavoring agents in the coating(s) over flavoring agent(s) in the core, thereby (a) avoiding problems of chemical or pharmaceutical incompatibility between an API in the core and flavoring agent(s) in the coating(s) and (b) achieving an increased control of the release of the API and of non-active excipients.

Claimed and disclosed is a method of manufacturing a semiconductor device, the method comprising the steps of forming a dummy gate on a semiconductor substrate, forming a source-drain diffusion region by introducing an impurity into the semiconductor substrate having the dummy gate as a mask, removing the dummy gate to form an opening, and forming a gate electrode within the opening with a gate insulating film formed below the gate electrode. The dummy gate is further formed by coating the semiconductor substrate with a polymer having a higher carbon content than hydrogen content so as to form a polymer film, forming a photoresist pattern on the polymer film, and transferring the pattern shape of the photoresist pattern onto the polymer film.

A multilayer, thermoplastic stretch wrap film containing at least three polymeric film layers and comprised of a first layer and a second layer. The first and second layers may comprise a polymer of two or more monomers, wherein a first monomer is ethylene, in a major amount by weight, and a second monomer is an alpha olefin of from about 3 to about 12 carbon atoms, in a minor amount by weight. If the first and second layers are outer layers, they have a cling force to each other of at least about 140 grams/inch. The stretch wrap film also has at least one inner polymeric layer, located between the first and second layers. The inner polymeric layer comprises a low polydispersity polymer having a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g/10 min., and a melt flow ratio (I.sub.20 /I.sub.2) of from about 12 to about 22. The inner layer(s) comprise(s) from about 5 wt. % to about 40 wt. % of the stretch wrap film so as to produce a film having a maximum stretch of at least 340%, a F-50 dart drop value of at least about 130 g/mil, a machine directional tear resistance of at least about 125 g/mil and a transverse directional tear resistance of at least about 500 g/mil. It is contemplated that additional outer layers may be added such an outer high cling layer or an outer slip layer, as well as additional inner layers.

The present invention provides a method for fabricating a flexible pixel array substrate as follows. First, a release layer is formed on a rigid substrate. Next, on the release layer, a polymer film is formed, the adhesive strength between the rigid substrate and the release layer being higher than that between the release layer and the polymer film. The polymer film is formed by spin coating a polymer monomer and performing a curing process to form a polymer layer. Afterwards, a pixel array is formed on the polymer film. The polymer film with the pixel array formed thereon is separated from the rigid substrate.

A Method. The method includes forming a substructure, on a substrate, including a feature having a sidewall of a first material and a bottom surface of a second material. Applying a solution including two immiscible polymers and third material to the substructure. The immiscible polymers include a first and second polymer. A selective chemical affinity of the first polymer for the material is greater than a selective chemical affinity of the second polymer for the material. The first polymer is segregated from the second polymer. The first polymer selectively migrates to the at least one sidewall, resulting in the first polymer being disposed between the at least one sidewall and the second polymer. The first polymer is selectively removed. The second polymer remains, resulting in forming structures including the substructure, the third material, and the second polymer. The substructure has a pattern. The pattern is transferred to the substrate.

A casting method, rather than injection molding, to produce polymer optical components and systems is provided. The casting process controls shrinkage and stress, thus providing both high bulk uniformity and high quality, accurate surfaces, by incorporating polymer films into the mold. The films may remain incorporated into the part or may optionally be removed from the part after removal from the mold. In addition, the incorporation of separately produced components within the cast part is also provided, eliminating post-casting assembly manufacturing steps.