Marking film and composite marking film
Assignee3M Innovative Properties Company
InventorYutaka Mori
Life of this patent
Estimating the term…
Abstract
A marking film exhibiting good ability for tracing curved surfaces when it is to be stuck to steeply curved three-dimensional portions without entrapping air bubbles at the film edges when an over-clear coating is applied thereon after it has been stuck. The marking film has a marking component to be transferred onto an article via an adhesive layer, wherein the total thickness of the marking film is in the A range of from about 50 μm to about 300 μm, and the modulus of elasticity thereof is in the range of from about 2 kgf/mm2 to about 25 kgf/mm2 as measured under a condition where the marking film is elongated at a tension speed of 300 mm/min. into an elongation percentage in the range of 0 to about 10%.
Claims10
A composite marking film for transferring a marking component to an article, comprising:
- an application film comprising a first base member and a first pressure sensitive adhesive layer on an outer surface of the first base member;
- and
- a marking film having a first outermost surface temporarily adhered to the first adhesive layer of the application film, wherein the marking film comprises a second base member and a second pressure sensitive adhesive layer on an outer surface of the second base member, wherein the second pressure sensitive adhesive layer forms a second outermost surface of the marking film;
- wherein the composite marking film has a modulus of elasticity in the range of from about 2 kgf/mm2 to about 28 kgf/mm2 as measured under a condition where the composite marking film is elongated at a tension speed of 300 mm/min. into an elongation percentage in the range of from 0 to about 10%, and wherein the marking film alone has a modulus of elasticity in the range of from about 2 kgf/mm2 to about 25 kgf/mm2 as measured under a condition where the composite marking film is elongated at a tension speed of 300 mm/min, into an elongation percentage in the range of from 0 to about 10%, wherein said first base member comprises vinyl chloride resin;
- said second base member comprises vinyl chloride resin or urethane resin;
- said first adhesive layer comprises a butyl acrylate;
- and said second adhesive layer comprises a butyl acrylate or a 2-methylbutyl acrylate.
Dependencies are inferred from the claim text.