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Method of marking pavement with sheet comprising ceramic fibers

a technology of ceramic fibers and pavement markings, which is applied in the direction of traffic signals, lighting and heating apparatus, roads, etc., can solve the problems of pavement marking sheets breaking away from pavements, reducing conformability, and reducing shear resistance, so as to reduce conformability and reduce shear resistance , the effect of reducing conformability

Inactive Publication Date: 2006-05-25
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The composition achieves similar tensile strength and elongation in both downweb and crossweb directions, enhancing conformability and shear resistance while avoiding asbestos toxicity, resulting in a durable and conformable pavement marking sheet.

Problems solved by technology

It has since been discovered that pavement marking sheets having a greater tensile strength in one direction (e.g. downweb) versus the other direction (e.g. crossweb) tend to result in reduced conformability and reduced shear resistance.
This differential in strength can result in the pavement marking sheet breaking away from the pavement to which it was applied.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0039] Table I, as follows, identifies the chemical description, trade designation, supplier and location for each of the ingredients employed in the examples.

TABLE IChemical DescriptionTrade DesignationSupplierLocationAcrylonitrile-“NIPOL 1022”Zeon ChemicalsLouisville, KYbutadiene, non-Incorporatedcrosslinked elastomerprecursorEthylene Acrylic Acid“AC 5120”Allied SignalMorristown, NJCopolymerCeramic Fiber“KAOWOOL HAThermalAugusta, GABULK”CeramicsCeramic Fiber“SUPERWOOLThermalAugusta, GA607”CeramicsAsbestos“RG-144”Union CarbideTalc - Platelet Filler,“MISTRONLuzenacEnglewood, COProcessing AidSUPERFROST”America, Inc.Antioxidant“SANTO WHITEFlexsysAkron, OHCRYSTALS”AmericaChlorinated Paraffin -“CHLOREZ 700S”Dover ChemicalDover, OHExtenderChlorinated Paraffin -“PAROIL 140”Dover ChemicalDover, OHExtenderSilica Hydrated“HI SIL 233”PPG IndustriesPittsburg, PAAmorphous - FillerInc.Stearic Acid -“INDUSTRENE R”HumkoMemphis, TNProcessing AidChemicalDivision ofWitco Corp.Chelating agent“VANSTA...

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Abstract

The invention relates to a method of marking pavement marking with a conformable sheet comprising ceramic fibers dispersed within a polymeric material.

Description

RELATED APPLICATIONS [0001] This application is a continuation of U.S. patent application Ser. No. 10 / 078,771 filed Feb. 18, 2002, now published as U.S. Patent Publication No. 2003 / 0099512, which claims priority from U.S. provisional patent application Ser. No. 60 / 325,279 filed Sep. 27, 2001.FIELD OF THE INVENTION [0002] The invention relates to a pavement marking composition comprising ceramic fibers. The ceramic fibers are preferably randomly dispersed within a polymeric material. The polymeric material preferably comprises a substantially non-crosslinked elastomer. The pavement marking composition is preferably formed into a sheet material such as a tape. BACKGROUND OF INVENTION [0003] Pavement marking tapes are typically used to delineate the boundaries for lanes of traffic on a roadway. The tape may extend continuously, such as along the outermost boundaries of the driving lanes, or intermittently, such as between lanes. One popular use for such a tape is in construction work z...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F21V7/22C08K3/34E01C23/18C08K7/08C08L101/00C09D7/12C09D109/02C09D123/00C09D123/08C09D157/02C09D167/00C09D167/08C09D201/00C09J7/02C09J201/00E01C23/20E01C23/24E01F9/04E01F9/08E01F9/594
CPCC08K7/08C08L101/00Y10T428/252E01F9/083E01F9/042E01F9/512E01F9/578
Inventor HELLAND, RANDALL H.RICE, ERIC E.
Owner 3M INNOVATIVE PROPERTIES CO