CA2234652C - Article a surface lisse revetu de microspheres de verre a faible indice de refraction, et son procede de preparation - Google Patents

Article a surface lisse revetu de microspheres de verre a faible indice de refraction, et son procede de preparation Download PDF

Info

Publication number
CA2234652C
CA2234652C CA 2234652 CA2234652A CA2234652C CA 2234652 C CA2234652 C CA 2234652C CA 2234652 CA2234652 CA 2234652 CA 2234652 A CA2234652 A CA 2234652A CA 2234652 C CA2234652 C CA 2234652C
Authority
CA
Canada
Prior art keywords
layer
irregularly shaped
glass
bead
glass beads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CA 2234652
Other languages
English (en)
Other versions
CA2234652A1 (fr
Inventor
James D. Laperre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/552,850 external-priority patent/US5620775A/en
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of CA2234652A1 publication Critical patent/CA2234652A1/fr
Application granted granted Critical
Publication of CA2234652C publication Critical patent/CA2234652C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

Articles revêtus de microsphères (billes) de verre et dotés d'une surface supérieure comportant une couche de microsphères de verre transparent à faible indice de réfraction telles que celles constituées de verre ordinaire recyclé. Ces articles sont extrêmement lisses au toucher et présentent un faible coefficient de frottement en surface bien que l'on puisse les préparer à partir de microsphères de verre mélangées à des particules de verre abrasives de forme irrégulière. On décrit également un procédé de fabrication de ces articles revêtus de billes et des articles de transfert utilisables dans la fabrication desdits articles revêtus de billes.
CA 2234652 1995-11-03 1996-10-28 Article a surface lisse revetu de microspheres de verre a faible indice de refraction, et son procede de preparation Expired - Fee Related CA2234652C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/552,850 1995-11-03
US08/552,850 US5620775A (en) 1995-11-03 1995-11-03 Low refractive index glass microsphere coated article having a smooth surface and a method for preparing same
PCT/US1996/017336 WO1997016754A1 (fr) 1995-11-03 1996-10-28 Article a surface lisse revetu de microspheres de verre a faible indice de refraction, et son procede de preparation

Publications (2)

Publication Number Publication Date
CA2234652A1 CA2234652A1 (fr) 1997-05-09
CA2234652C true CA2234652C (fr) 2006-10-24

Family

ID=29406036

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2234652 Expired - Fee Related CA2234652C (fr) 1995-11-03 1996-10-28 Article a surface lisse revetu de microspheres de verre a faible indice de refraction, et son procede de preparation

Country Status (1)

Country Link
CA (1) CA2234652C (fr)

Also Published As

Publication number Publication date
CA2234652A1 (fr) 1997-05-09

Similar Documents

Publication Publication Date Title
US5620775A (en) Low refractive index glass microsphere coated article having a smooth surface and a method for preparing same
US11833851B2 (en) Microsphere articles and transfer articles
EP0997750B1 (fr) Feuille retroréfléchissante possedant une image de validation et méthodes de sa fabrication
US4328274A (en) Transparent friction surface sheet material
US8147907B2 (en) Retroreflective sheeting with security and/or decorative image
AU643862B2 (en) Permeable retroreflective sheeting and method for making same
EP3090290A2 (fr) Matériau contenant des perles ouvertes à pouvoir réfléchissant élevé et procédé correspondant
KR100228593B1 (ko) 역반사성의 착색상을 형성하기 위한 전사제품 및 이를 제조하는 방법
EP0704719B1 (fr) Feuille rétroréfléchissante du type à lentille
CA2234652C (fr) Article a surface lisse revetu de microspheres de verre a faible indice de refraction, et son procede de preparation
KR20030019662A (ko) 미소구체를 사용한 반사직물 및 그 제조방법
EP1489439B1 (fr) Méthode de fabrication d'une feuille retroréfléchissante possedant une image de validation
EP0498826A1 (fr) Materiau reflechissant
MXPA99000884A (en) Thermal transfer compositions, articles and graphic articles made with same

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed