Adhesive mountable stack of removable layers

Patent metadata

Field	Value
Publication number	US-9526290-B2
Application number	US-201615050293-A
Country	US
Kind code	B2
Filing date	Feb 22, 2016
Priority date	Jun 17, 2014
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

An eye protector includes a lens configured to protect the wearer from projectiles, and an optically clear stack attached to the lens. The stack can have one or more removable layers. The eye protector also includes an optically clear dry mount adhesive layer attaching the stack to the lens. The dry mount adhesive may be self-wetting to attach the stack to the lens so that air between the stack and the lens can be removed after the stack is attached and/or adhered to the lens, for example, by applying pressure across the surface of the stack. The refractive indices of the lens, the dry mount adhesive, and each removable layer are matched to within about 0.2.

First claim

What is claimed is:

1. A method of protecting an eye protector without significantly reducing visual acuity through the eye protector, the eye protector having a center portion defining a center of gaze of a wearer, the eye protector also having a lens configured to protect the wearer from projectiles, the lens having a lens refractive index, the method comprising:
selecting an optically clear stack having at least one removable layer, each removable layer having a removable layer refractive index matched to within about 0.2 of the lens refractive index; removing a protective liner from a bottom surface of the lens stack to expose an optically clear dry mount adhesive layer, and dry mounting the stack to the lens so that the adhesive layer forms a continuous and uninterrupted adhesive layer over at least the center portion,
wherein the dry mount adhesive layer is self-wetting and has a dry mount adhesive layer refractive index matched to within about 0.2 of the lens refractive index and each removable layer refractive index.

2. The method of claim 1 , wherein the selecting step comprises selecting a stack having a plurality of removable layers.

3. The method of claim 2 , wherein the dry mounting step further comprises the step of removing air between the stack and the lens after the stack is dry mounted to the lens.

4. The method of claim 3 , further comprising the step of breaking an adhesive bond between the stack and an uppermost removable layer of the stack to remove the uppermost removable layer, the breaking step further comprising gripping and pulling a tab on the uppermost layer of the stack to remove the uppermost layer and expose a lower layer of the stack, wherein the adhesive bond is formed by an optically clear stack adhesive layer having a stack adhesive refractive index,
wherein the stack adhesive layer refractive index, the lens refractive index, each removable layer refractive index, and the dry mount adhesive refractive index are matched to within about 0.2.

5. The method of claim 4 , wherein the step of dry mounting establishes a peel strength between the stack and the lens that is greater than a peel strength between each removable layer and the stack.

Assignees

• Racing Optics Inc

Inventors

• Wilson Bart E

Classifications

• A61F9/025

  Special attachment of screens, e.g. hinged, removable; Roll-up protective layers · CPC title

• A42B3/26 Primary

  with cleaning means, e.g. wipers {; Movable or interchangeable vision films or sheets} · CPC title

• C09J133/12

  Homopolymers or copolymers of methyl methacrylate · CPC title

• C09J7/30

  characterised by the adhesive composition · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title