Dry erasable and projection articles and methods of making the same
AssigneeAvery Dennison Corporation
InventorsLiJuan He, Seth Levenstein
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Abstract
The invention relates to an article, useful as a dry erasable substrate and projection screen, comprising a top layer which is dry erasable and whose surface has a 60° gloss of less than about 60. The article provides a projection surface which has low gloss and therefore causes little eye strain and viewer fatigue. The dry erase board provides good write/rewrite characteristics, erasability, including wet erasability and has good image projection. The article may additionally have one or more of layers which include a pressure sensitive adhesive, support layer, a pigmented layer which is a pressure sensitive adhesive or a pigmented polymer or polymer blend, and a back coat which is optionally pigmented.
Claims44
An article, useful as a dry erasable substrate and projection screen, comprising a dry erasable layer whose surface has a 60° gloss of less than about 60;
- at least one pigmented layer, the pigmented layer being a pigmented polymer or blend;
- and a bead matrix layer comprising glass beads, wherein the bead martix is adhered between the dry erasable layer and the pigmented layer.
An article, useful as a dry erasable substrate and projection screen, comprising a dry erasable layer having a 60° gloss of less than 60 and a bead matrix layer adhered to the dry erasable layer wherein the bead matrix layer comprises glass beads.
An article, useful as a dry erasable substrate and projection screen, comprising:
- a dry erasable polyurethane or melamine resin layer whose surface has a 60° gloss of less than about 60.
- at least one pigmented polyvinlchloride or polyvinylbutyral layer;
- and
- a bead matrix layer comprising glass beads,
- wherein the bead matrix is adhered between the dry erasable layer and the pigmented layer.
Dependencies are inferred from the claim text.