Extendable Self-Supporting Material
AssigneeLieberman Distributing and Manufacturing Co. d/b/a Lidco Products
InventorsDavid A. Gray, Robert M. Hume
Life of this patent
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Abstract
This disclosure relates to the field of self-supporting extendable materials such as tapes used for sealing, adhering two surfaces together, masking, medical tape, and the like; papers, vinyls, and decal substrates. More specifically, the disclosure is directed to coated extendable self-supporting materials, for example, adhesive tapes, papers, and adhesive sheets, and the manufacture of adhesive tapes and papers, wherein a length of tape or other material extends rigidly a certain distance and does not coil or curl onto itself, or curl or coil prematurely onto the receiving substrate. Yet, the material maintains flexibility to be pliable and generally to conform to a surface to which it may be applied. The material is available in sheet form or as roll goods.
Claims29
A pressure sensitive tape comprising:
- a laminated material having an axial length and a longitudinal width;
- the laminated material having a substrate material layer having a first surface and a second surface, a first adhesive layer, a heat activated shrink film layer having a first surface and a second surface, and a second adhesive layer,
- wherein the first adhesive layer is disposed between the second surface of the substrate material layer and the first surface of the shrink film layer, and the second adhesive layer is disposed on the first surface of the substrate material layer or the second surface of the shrink film layer, and wherein the second adhesive layer comprises a pressure sensitive adhesive;
- and
- the axial length of the laminated material has a curvature about the longitudinal width of the laminated material induced by heat activation of the shrink film layer, wherein the curvature is in the shape of an arc;
- and
- wherein the laminated material when extended is self-supporting, and
- wherein the substrate material is not a shrink film, and the substrate material and the activated shrink film cooperate to impart the curvature which imparts stiffness to the laminated material.
An extendable self-supporting material comprising:
- a laminated material having an axial length and a longitudinal width, the laminated material comprising:
- a substrate material having a first surface and a second surface;
- a heat activated shrink film having a first surface and a second surface, the first surface of the shrink film laminated to the second surface of the substrate material;
- and
- wherein the axial length of the laminated material has curvature in the shape of an arc about the longitudinal width induced by heat activation of the shrink film;
- and
- wherein the curvature causes resistance to bending of the laminated material along the axial length when the self-supporting material is extended, and
- wherein the substrate material is not a shrink film, and the substrate material and the activated shrink film cooperate to impart the curvature which imparts stiffness to the laminated material.
A self-supporting material comprising:
- a laminated material having an axial length and a longitudinal width, the laminated material comprising:
- a.) a substrate material having a first surface and a second surface,
- b.) a heat activated shrink film having a first surface and a second surface, the first surface of the shrink film laminated to the second surface of the substrate material, and the axial length of the laminated material has curvature about the longitudinal width, induced by heat activation of the shrink film, that causes resistance to bending of the laminated material along the axial length of the laminated material, wherein the curvature is in the shape of an arc;
- wherein the laminated material is self-supporting, and
- wherein the substrate material is not a shrink film, and the substrate material and the activated shrink film cooperate to impart the curvature which imparts stiffness to the laminated material.
A self-supporting material consisting essentially of:
- a laminated material having an axial length and a longitudinal width, the laminated material consisting essentially of:
- a.) a substrate material having a first surface and a second surface,
- b.) a heat activated shrink film having a first surface and a second surface, the first surface of the shrink film laminated to the second surface of the substrate material, and;
- c.) a pressure sensitive adhesive disposed on the first surface of the substrate material or second surface of the shrink film;
- the axial length of the laminated material having curvature in the shape of an arc about the longitudinal width that causes resistance to bending of the laminated material along the axial length of the laminated material, the curvature induced by heat activation of the shrink film;
- and
- wherein the laminated material when extended is self-supporting, and
- wherein the substrate material is not a shrink film, and the substrate material and the activated shrink film cooperate to impart the curvature which imparts stiffness to the laminated material.
Dependencies are inferred from the claim text.