Abstract: This invention relates to moisture resistant frozen food packaging using highly-sized paperboard and press applied moisture resistant over-print varnishes. Such structures of this type, generally, employ a moisture-resistant coating which is placed between the food product and the paperboard in order to provide a barrier for the food from the board and also to prevent the paperboard from absorbing moisture. Also, edge-wick moisture absorption is minimized by the use of the highly-sized sheet.

Abstract: This invention relates to the application of an optically active dye or fluorecent whitening agent within a paper fiber such that the dye or whitening agent does not migrate out of the fiber at a level of toxicological concern. Such processes of this type, generally, allow the dye or whitening agent to be used in hygienic end use applications.

Abstract: This invention relates to making paperboard and plastic composite package structures that combine an intricate thermoformed shell with a paperboard base or cover. Such structures of this type, generally, provide a lightweight package with a good printing surface on the outside of the package.

Abstract: This invention relates to substrates for paperboard packing with an improved sizing layer including a styrene maleic anhydride binder for reducing edgewicking. Such structures of this type, generally, reduce the edgewick in the paperboard package such that catastrophic failure of the paperboard package is substantially reduced.

Abstract: This invention relates to rescue boards that are constructed of several individual pieces. Such structures of this type, generally, allow the rescue personnel to extricate an unconscious or injured person from a confined space through a small opening and onto a backboard for transport to a medical facility.

Abstract: This invention relates to load adjustment systems for coater blades. Such structures of this type, generally, employ the use of an actuator assembly to control cross-direction (widthwise) coatweight profiles.

Abstract: This invention relates to controllers for printing presses. Such structures of this type, generally, utilize information gathered at earlier production stages, such as, the crease register to improve the through put of later stages, such as, printing.

Abstract: This invention relates to a method and apparatus for heat sealing polymer coated paperboard substrates using a uniform energy distributed light energy beam. Such structures of this type, generally, use lasers which allow a very accurate placement of the sealing energy and a controllable energy level.

Abstract: This invention relates to an apparatus and method for identifying periodic roughness variations on a paper surface. Such devices of this type, generally, collect topography data from the paper surface, analyze the data, and compare the data with known signature topographies of paper machine clothing and equipment to determine the location in the paper manufacturing process where the periodic roughness variations on the paper surface are being produced.

Abstract: This invention relates to recently developed systems which produced bleached recycled fibers from high lignin content recovered paper materials such as old corrugated containers and old newspapers. Such systems of this type, generally, use chemical digestion (e.g., the kraft process) to reduce the lignin content prior to bleaching. Since recovered paper materials normally have high levels of aluminum, which are derived from the paper sizing and pH control chemical, aluminum sulfate; and since soluble aluminum causes scaling of evaporators in the kraft digestion-chemical recovery cycle, there is a need for a means to remove soluble aluminum from the recovered paper materials prior to digestion.

Abstract: This invention relates to paperboard packages or cartons suitable for distributing, marketing and heating prepared food products. Such structures of this type, generally, include a coating which is mass stable below 400.degree. F., has chloroform-soluble extractives not exceeding 0.5 mg/in..sup.2 of a food contact surface when exposed to a food simulating solvent of 150.degree. F. for two hours and is flexible enough to withstand conventional scoring in a cross-direction with a 2 point male rule and a 0.062 inch channel while sustaining a crack length ratio of no greater than 0.1.

Abstract: This invention relates to a process of making paperboard materials for carrying static cling vinyl products for transport to end users. Such structures of this type, generally, provide good adhesion for the static cling vinyl product, but allow the vinyl product to be peeled off easily.

Abstract: This invention relates to a method for reducing off-taste and/or odor from hygienic paper packages (such as food and beverage packaging) by heating and steam stripping the surface of the paper web. Such methods of this type, generally, remove undesirable compounds that create off-taste and/or odor from the paper package in a simple, cost-effective manner.

Abstract: Subjective paper characteristics such as visual appearance and print quality are often objectively related to certain scales of surface roughness. Three dimensional topographic surface data is obtained from a paper sample secured by vacuum to a flat, porous plate for translational movement in a grid pattern beneath a vertically compliant stylus that is resiliently suspended beneath a rigid, overhead support beam. Such surface data is mathematically filtered by a linear convolution technique or the distinctly alternative circular convolution technique to segregate the raw data characteristics of component surfaces that contain only certain frequencies of roughness. The root-mean-square variations of such component surfaces is then used to objectively characterize respective surface characteristics.

Abstract: This invention relates to the measurement and control of consistency in an aqueous flow stream, as it leaves a stage (i.e. Bleaching Stage) of the papermaking process. More particularly, the present invention relates to the measurement used for control of wood fiber and suspended solids in a papermaking pulp stock flow stream.

Abstract: This invention relates to a retrofit apparatus utilized in Ultraviolet (UV) light sterilization equipment for paperboard packaging filling machines. Such structures of this type, generally, allow conventional paperboard packaging filling machines to be economically converted to include an ultraviolet light sterilization retrofit assembly wherein microbiological spoilage of the food product contained within the paperboard packaging can be significantly reduced.

Abstract: This invention relates to headboxes which are used in papermaking machines. The inventive structure employs the use of a plurality of venturis located between the headbox chamber and the slice. Each venturi is located adjacent to a pulp conduit spaced transversely across the headbox chamber.

Abstract: This invention relates to a hexagonal paperboard carton that is tapered with an automatic bottom. Such structures of this type, generally, provide a peeling feature that allows the consumer to remove the carton from the product in a continual, spiral strip.

Abstract: This invention relates to a method for producing packaging materials containing reclaimed/recycled fiber by chemically hydrolyzing the fiber, treating the fiber at elevated temperature greater than 100.degree. C., adding a reduced sulfur agent to the fiber to reduce the sulfur content of the fiber by forming insoluble heavy metal sulfide compounds which precipitate from the hydrolyzed fiber, oxidizing and then washing the fiber to produce a paper pulp. Such methods of this type, generally, produce reclaimed/recycled fiber that is sufficiently hygienic for food grade and medical device packaging applications.