Hollingsworth & Vose Company

Kvg Technologies, Inc.

Evanite Fiber Corporation

Squannacook Technologies LLC

Other

George C Zguris

John D Windisch

Patrick Svoboda

Yuri Vulfson

Frank C Harmon, Jr

Antonio L Ferreira

Larry K Coon

Ronald D Reher

Steven J Russell

Methods for enhancing one or more physical properties of wet-laid or dry-laid fiber mats, such as a glass fiber, cellulosic or polymeric fiber mats are disclosed and fiber mats made according to such processes. Certain embodiments of the methods involve vibrational compression of a wet-laid or dry-laid fiber mat. In some embodiments the methods produce a fiber mat having increased apparent density and/or tensile strength as compared to a mat that has not been vibrationally compressed. Exemplar fiber mats suitable for use in the disclosed methods include, for example, glass, polyolefin, ethylene terephthalate, or cellulose fibers, or mixtures thereof. Glass, cellulosic or polymeric fiber mats that are structurally improved by the disclosed methods are also disclosed.

Vibrationally compressed glass fiber and/or other material fiber mats and methods for making the same

Disclosed are glass compositions, glass fiber compositions, glass fiber battery separators, glass fiber filter media, battery additives and active materials formed with glass compositions disclosed, glass fiber radiation shields, and glass fiber paper compositions. Certain embodiments include, among other components, bismuth oxide. Certain embodiments include about 0.5-30% bismuth oxide of the composition by weight and silica oxide at about 54-70% of the composition by weight. Embodiments may also include other components. For example, zinc oxide can make up about 0.01-3% of the composition by weight.

Batteries containing bismuth glass compositions

Glass compositions

Methods of modifying fibers, such as glass fibers, are disclosed. The modified fibers can be used, for example, in a lead acid battery.

Methods of modifying fibers

A binderless glass fiber mat suitable for use as a separator for valve regulated ('recombinant') lead acid ('VRLA') batteries is disclosed. The separator is produced by a dry process by collecting the fibers from fiberizing apparatus, without subjecting them to a wet paper making or other post forming process, and selecting portions of the collected fibers which are sufficiently uniform in thickness and grammage for use as battery separators. The fibers can be entwined to produce a superior separator material. Additives can be introduced during the collection process to enhance the properties of the separator. A battery comprises at least one stack of alternating positive and negative plates, with the separator between adjacent plates. Separators according to the invention are significantly more resilient and have longer fibers than otherwise identical separators made from different samples of the same glass fibers, but by a conventional wet paper making process.

Mat of glass and other fibers and method for producing such mat

Disclosed are glass compositions and glass fibers formed from certain embodiments of the disclosed glass compositions. Certain embodiments of the glass compositions include, among other components, bismuth oxide. Certain embodiments of the glass composition include about 0.5&#x2013;30% bismuth oxide of the composition by weight and silica oxide at about 54&#x2013;70% of the composition by weight. Embodiments of the glass compositions may also include other components. For example, zinc oxide can make up about 0.01&#x2013;5% of the composition by weight.

Disclosed are glass compositions, glass fiber compositions, glass fiber battery separators, glass fiber filter media, battery additives and active materials formed with glass compositions disclosed, glass fiber radiation shields, and glass fiber paper compositions. Certain embodiments include, among other components, bismuth oxide. Certain embodiments include about 0.5&#x2013;30% bismuth oxide of the composition by weight and silica oxide at about 54&#x2013;70% of the composition by weight. Embodiments may also include other components. For example, zinc oxide can make up about 0.01&#x2013;3% of the composition by weight.

Glass fibers are disclosed. The glass fibers can be used, for example, in a lead acid battery.

Glass fibers

A binderless glass fiber mat suitable for use as a separator for valve regulated (&ldquo;recombinant&rdquo;) lead acid (&ldquo;VRLA&rdquo;) batteries is disclosed. The separator is produced by a dry process by collecting the fibers from fiberizing apparatus, without subjecting them to a wet paper making or other post forming process, and selecting portions of the collected fibers which are sufficiently uniform in thickness and grammage for use as battery separators. The fibers can be entwined to produce a superior separator material. Additives can be introduced during the collection process to enhance the properties of the separator. A battery comprises at least one stack of alternating positive and negative plates, with the separator between adjacent plates. Separators according to the invention are significantly more resilient and have longer fibers than otherwise identical separators made from different samples of the same glass fibers, but by a conventional wet paper making process.

Mat of glass and other fibers and method for producing it

Battery paste

A glass fiber separator material is disclosed. The separator is composed of a mass of intermeshed glass fibers substantially all of which have a fiber diameter not greater than about 20 &mgr;m, and at least 5 percent w/w of which have a fiber diameter less than 1 &mgr;m, and, distributed through the glass fibers, and from 0.2 percent w/w to 20 percent w/w of cellulose fibrils. The fibrils are from a slurry having a Canadian freeness sufficiently low that the separator material has a tensile strength greater than an otherwise identical separator where glass fibers having an average diameter greater than 1 &mgr;m replace the cellulose fibrils.

Glass fiber separators for lead-acid batteries

A method for producing a battery separator from a slurry of fibers which are resistant to the chemicals which are found in a battery, and a thermoplastic binder for the fibers. The method comprises the steps of casting the slurry onto a screen, draining the liquid of the slurry from fibers and binder which collect on the screen, and drying the fibers and binder without softening the binder. Subsequently, usually after the it has been rolled, packaged and shipped, the separator is cut to size and heated to soften the binder. In a preferred embodiment, the fibers are glass fibers having an average diameter less than 3 &mgr;m. In another preferred embodiment, the fibers are organic.

Method for producing a battery with separators containing fusible binders

Methods and materials for producing microfibers, and methods or collecting the formed fibers as mats, either by themselves or with various additive, are disclosed. The mats are masses of intermeshed glass or other fibers produced by suspending the fibers in a gaseous medium, and collecting the suspended fibers on a foraminous material. The fibers suspended in the gaseous medium have a BET surface area of from 0.2 to 5 m,per gram. A method for adding additional materials to the mats is also disclosed; this method involves suspending the additives in the gaseous medium with the fibers.

Growing community of inventors

Canterbury, NH, United States of America

George C Zguris