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Retroreflective sheeting including a solvent-based topcoat

A technology of retroreflective sheeting and topcoating, which can be used in coatings, devices for coating liquids on surfaces, and metal material coating processes, etc., can solve the problems of consuming a lot of time and energy, weakening the flexibility of sheets, and time-consuming

Active Publication Date: 2016-02-24
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some exemplary disadvantages of extruded films are that they are relatively thick and may reduce sheet flexibility, and are expensive to manufacture
Some disadvantages of waterborne acrylic polymer compositions are that they are expensive and time consuming to manufacture since they require a lot of time and energy to dry to remove the water

Method used

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  • Retroreflective sheeting including a solvent-based topcoat
  • Retroreflective sheeting including a solvent-based topcoat
  • Retroreflective sheeting including a solvent-based topcoat

Examples

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Embodiment Construction

[0024] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof and which illustrate by way of illustration an exemplary embodiment. It is to be understood that other embodiments are conceived and can be made without departing from the scope or spirit of the present disclosure.

[0025] The present invention generally relates to retroreflective sheeting that includes a sheeting of prismatic cube corner elements that includes a viewing surface upon which incident light is incident. A topcoat is disposed on the viewing surface. The topcoat comprises a solvent-based composition.

[0026] As used herein, the term "topcoat" refers to a layer disposed on the viewing surface (eg, the outermost surface upon which incident light impinges) of a sheet of retroreflective sheeting. A topcoat as described herein can, for example, assist in protecting the front surface of the retroreflective sheeting.

[0027] As used herein, the term...

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Abstract

The present disclosure generally relates to retroreflective sheeting including a topcoat and to methods of making such sheeting. In some embodiments, the retroreflective sheeting includes (1) a first major surface that is a structured surface having a structure imparted by a plurality of prismatic cube corner elements; (2) a second major surface opposite the first major surface, the second major surface being substantially planar and including a polycarbonate; and (3) a topcoat adjacent to at least a portion of the second major surface and the topcoat including a solvent-based composition.

Description

technical field [0001] The present disclosure generally relates to retroreflective sheeting including topcoats and methods of making such sheeting. Background technique [0002] Retroreflective articles are characterized by the ability to redirect light incident on the material so that it reflects back to the original light source. This characteristic has led to the widespread use of retroreflective articles in sheet form, for example, in transportation and personal safety applications. Retroreflective sheeting is commonly used in a variety of traffic control articles (eg, road markings, barricades, license plates, pavement markings and pavement marking tapes, and reflective tapes for vehicles and clothing). [0003] Cube corner sheeting (sometimes called prisms, microprisms, corner prisms, or total internal reflection sheeting) is a type of retroreflective sheeting and typically includes a plurality of cube corner elements for retroreflecting incident light. Cube corner r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/12
CPCG02B5/124B05D3/007B05D5/063B05D2201/02B05D2252/00B29D11/00865B29K2069/00C23C16/06G02B1/04G02B5/208G02B1/14
Inventor 李·A·帕维尔卡大卫·W·迈茨约瑟夫·A·里奇托马斯·V·库斯莱克马克·W·莱弗蒂
Owner 3M INNOVATIVE PROPERTIES CO
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