Abstract:
This invention relates to a heat sealing element for use in a heat sealing jaw in cooperation with an opposing backing jaw for sealing layers of film together to form a sealed portion and a notch within the sealed portion, the heat sealing element comprising: a sealing face for pressing the layers of film together against the opposing backing jaw and forming the sealed portion, the sealing face having a protrusion for forming the notch within the sealed portion; and a clamping portion adjacent to the sealing face, the clamping portion being disposed at an orientation diverging from a plane along which the layers of film are sealed together.
Abstract:
A novel reversal lithography process without etch back is described. The reversal material comprises nanoparticles that are selectively deposited into the gaps between features without overcoating the tops of the features. As a result, a patterned imaging layer can be removed using solvent, blanket exposure followed by developer washing, or dry etching directly, without an etch-back process, and the original bright field lithography pattern can be reversed into dark field features, and transferred into subsequent layers using the nanoparticle reversal material as an etch mask.
Abstract:
The invention provides polymers, methods of preparing polymers, and compositions that include polymers, wherein said polymers include a plurality of two-carbon repeating units in a polymer chain, wherein one or more of the two-carbon repeating units of the polymer chain have tertiary amine or pyridine-containing substituents; and at least about 10% of the nitrogen atoms of the tertiary amine or pyridine-containing substituents are quaternized with alkyl groups or with an alkyl group that contains one or more ethylene glycol groups. The alkyl or ethoxylated alkyl groups can also be at least partially fluorinated. The polymers can be used to provide antimicrobial surfaces and antifouling coatings.
Abstract:
The invention provides polymers, methods of preparing polymers, and compositions that include polymers, wherein said polymers include a plurality of two-carbon repeating units in a polymer chain, wherein one or more of the two-carbon repeating units of the polymer chain have a substituent that is covalently bonded to a semifluorinated alkyl ethoxy moiety, and the semifluorinated alkyl ethoxy moiety is attached to the polymer chain substituent through an ester, amide, ketone, carbamate, amine, or other suitable linking group. The polymers can be used to provide antifouling coatings.
Abstract:
A method for calibrating large fixed electronic scale is provided. The method applies an auxiliary verification device to calibrate the large fixed electronic scale without using a weight and includes following steps of: loading and unloading every supporting point on the scale table board of the scale by at least one self-locating loading and unloading mechanism; measuring and displaying a load that each loading and unloading mechanisms applies to the scale table board by at least one high accuracy load gauge; controlling a size of the load that each loading and unloading mechanisms applies to the scale table board by a constant load control device; and comparing a precise load displayed by the high accuracy load gauge with a gauge weighing display value of the scale to obtain a calibration error of the scale. The present method greatly improves working efficiency and safety and reduces costs.
Abstract:
Methods of forming microelectronic structure are provided. The methods comprise the formation of T-shaped structures using a controlled undercutting process, and the deposition of a selectively etchable composition into the undercut areas of the T-shaped structures. The T-shaped structures are subsequently removed to yield extremely small undercut-formed features that conform to the width and optionally the height of the undercut areas of the T-shaped structures. These methods can be combined with other conventional patterning methods to create structures having extremely small feature sizes regardless of the wavelength of light used for patterning.
Abstract:
The invention provides polymers, methods of preparing polymers, and compositions that include polymers, wherein said polymers include a plurality of two-carbon repeating units in a polymer chain, wherein one or more of the two-carbon repeating units of the polymer chain have a substituent that is covalently bonded to a semifluorinated alkyl ethoxy moiety, and the semifluorinated alkyl ethoxy moiety is attached to the polymer chain substituent through an ester, amide, ketone, carbamate, amine, or other suitable linking group. The polymers can be used to provide antifouling coatings.
Abstract:
A process for making an aseptic sealed product-filled package in disclosed. The process includes the steps of: providing a bag having a preformed filling fitment; filling the bag with product through the filling fitment; and sealing the bag below the filling fitment. The process can further include the step of cutting off at least a portion of the bag above the seal to remove the filling fitment. Also provided is a bag for forming an aseptic product-filled package. The bag includes a pair of corresponding walls of flexible, sealable material, which are sealed about a common periphery to form an internal volume having a product portion and a fitment portion. The product portion and the fitment portion are fluidly connected. The bag further includes a filling fitment attached to at least one of the walls near the common periphery. The package is formable by aseptically sealing at least a part of the fitment portion with the fitment so as to isolate the fitment from the remainder of the bag. Optionally, the package may be formed by the additional step of cutting off at least a part of the bag above the seal including the fitment.
Abstract:
This invention relates to a method and apparatus for a solar collector having intergral control of the the maximum temperature that it can reach, thereby avoiding excessive stagnation temperatures in the collector. In one embodiment, a solar collector comprises a top portion comprising glazing, a bottom portion; an absorber disposed between said top portion and said bottom portion for absorbing solar energy received through said glazing, said absorber in a spaced relationship above said bottom portion such that a channel is defined between a lower surface of said absorber and an upper surface of said bottom portion; an inlet and an outlet associated with and at substantially opposite ends of said channel between said absorber and said bottom portion, for ventilating said channel; and a damper for opening said outlet at a temperature equal to or above a first selected temperature and for closing said outlet at a temperature equal to or below a second selected temperature; wherein said first and second selected temperatures are below a stagnation temperature of the solar collector.
Abstract:
A method for calibrating large fixed electronic scale is provided. The method applies an auxiliary verification device to calibrate the large fixed electronic scale without using a weight and includes following steps of: loading and unloading every supporting point on the scale table board of the scale by at least one self-locating loading and unloading mechanism; measuring and displaying a load that each loading and unloading mechanisms applies to the scale table board by at least one high accuracy load gauge; controlling a size of the load that each loading and unloading mechanisms applies to the scale table board by a constant load control device; and comparing a precise load displayed by the high accuracy load gauge with a gauge weighing display value of the scale to obtain a calibration error of the scale. The present method greatly improves working efficiency and safety and reduces costs.