Glass Interleaver Paper Produced With Coarse Fibers

a technology of interleaver paper and coarse fibers, which is applied in filter paper, separation process, filtering separation, etc., can solve the problems of reducing the size of the defect in the glass in proportion to the resolution, and reducing the protection of the glass for the display, so as to minimize particle generation and migrating materials, reduce bulk, and fine smooth surface texture

Inactive Publication Date: 2020-06-25
EXPERA SPECIALITY SOLUTIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]In view of the above-described state of the art, conventionally, to inhibit the presence or impact of contaminants, interleaver papers have been designed with northern softwood ‘soft’ fibers to have low bulk, to have very fine smooth surface texture, and to minimize particle generation and migratable materials.

Problems solved by technology

As display technology has advanced, the protection of the glass for the display has become increasingly difficult because as the resolution of such displays increases (e.g., from 720 to 1080 to 4K to beyond in future generations of displays), the size constituting a defect in the glass decreases in proportion to the resolution.

Method used

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  • Glass Interleaver Paper Produced With Coarse Fibers
  • Glass Interleaver Paper Produced With Coarse Fibers

Examples

Experimental program
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Embodiment Construction

[0032]The following terms will be used in this application:

[0033]The basis weight is a measure of the weight of a paper per area. Typical units are pounds per 3000 ft2 or grams per square meter (gsm).

[0034]Bulk is the opposite of density. Sheets with low density are said to have high bulk.

[0035]Calendering is a process of exposing a sheet of paper to pressure and heat in order to further densify, smooth, and consolidate the sheet.

[0036]Caliper is thickness of a paper. Typical units are mils (thousandths of an inch) or microns.

[0037]A defoamer is a chemical used in the pulping process to reduce / minimize foam. Most commonly these contain poly dimethylsiloxane (PDMS) oil as the base for the defoaming capability.

[0038]Density is a measure of the mass per unit volume of a paper. Density can be calculated by dividing the basis weight by the thickness of a paper. Typical units of density are grams per cubic centimeter.

[0039]The felt side is the surface of paper which is opposite the side f...

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Abstract

A paper for use as a slip sheet interleaver for the protection of glass surfaces in which the paper comprises a sheet with a basis weight of 15-60 lb/3,000 ft2, has a bulk density less than 0.75 g/cm3, and has an average fiber coarseness greater than 0.18 mg/m. In comparison to conventional interleaver sheets, this paper is produced from a refined pulp having high coarseness.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of the filing date of U.S. Provisional Patent Application No. 62 / 519,698 entitled “Glass Interleaver Paper Produced with Coarse Fibers” filed on Jun. 14, 2017. That application is hereby incorporated by reference for all purposes as if set forth in its entirety herein.STATEMENT OF FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.BACKGROUND[0003]This disclosure relates to interleaver sheets for the separating sheets of glass in order to protect the glass from breakage and surface damage.[0004]Glass sheet products are commonly packaged in packs or stacks with an interleaving sheet separating the sheets of glass. The purpose of the interleaver sheet is to protect the glass from breakage, surface damage such as scratches or stain spots, and to allow for ease of handling and separation of the glass during unpacking.[0005]For technical glass products in particular, such as the glass used in vid...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D21H27/08D21H21/52
CPCD21H27/08D21H21/52D21F9/00D21F11/00D21H5/12D21H5/2628D21H5/2664D21H11/00D21H13/10D21H15/10D21H17/20
Inventor LEIMKUEHLER, ZACHARY L.WILLIAMS, CHRISTOPHER L.JANSEN, CHRISTOPHER R.NEUVILLE, JOEL J.
Owner EXPERA SPECIALITY SOLUTIONS LLC
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