发明名称 |
Weitwinklig retroreflektierende Folie und Verfahren zu ihrer Herstellung. |
摘要 |
A new embedded-lens retroreflective sheeting which exhibits superior properties, including superior angularity, and which is made by a new method of manufacture involving lamination techniques. Microspheres are embedded into a first polymeric layer to less than one-half the average diameter of the microspheres, and a pre-formed spacing film is laminated to the microsphere covered surface of the first layer so as to obtain conformation of the spacing film in a substantially constant thickness over a useful portion of the back surface of the microspheres. |
申请公布号 |
DE3486411(D1) |
申请公布日期 |
1995.11.30 |
申请号 |
DE19843486411 |
申请日期 |
1984.04.10 |
申请人 |
MINNESOTA MINING AND MFG. CO., SAINT PAUL, MINN., US |
发明人 |
BAILEY, TERRY R. C/O MINNESOTA MINING AND, P.O. BOX 33427 ST. PAUL MINNESOTA 55133, US |
分类号 |
G02B5/12;B32B7/02;G02B5/128;(IPC1-7):G02B5/128 |
主分类号 |
G02B5/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|