Surface impression resistant film constructions and methods

Patent metadata

Field	Value
Publication number	US-12138903-B2
Application number	US-201916967915-A
Country	US
Kind code	B2
Filing date	Feb 5, 2019
Priority date	Feb 6, 2018
Publication date	Nov 12, 2024
Grant date	Nov 12, 2024

Abstract

A web of film material wound about a central longitudinal axis to provide a roll, the film material including a conformable base film comprising a first surface and an opposite second surface. The web of film material further includes an adhesive layer including a first surface bonded to the second surface of the base film and an opposite second surface, a release liner releasably attached to the second surface of the adhesive layer, and a protective film layer releasably attached to the first surface of the conformable base film.

First claim

The invention claimed is:

1. A web of film material wound about a central longitudinal axis to provide a roll, the film material comprising:
a conformable base film comprising a first surface and an opposite second surface, the conformable base film comprising at least one layer of polyvinyl chloride film;
an adhesive layer comprising:
a first surface bonded to the second surface of the base film; and
an opposite second surface;

a release liner releasably attached to the second surface of the adhesive layer; and
a protective film layer releasably attached to the first surface of the conformable base film without another layer, including any adhesive layer, between the protective film layer and the at least one layer of polyvinyl chloride film such that the protective film layer is in direct contact with the first surface of the conformable base film, and the bonding force between the protective film layer and the first surface of the conformable base film is achieved by weak intermolecular forces, having a bonding force in the range of about 2 to 6 cN/25.4 mm measured at a separation speed of 2286 mm/min, the protective film layer provided in a thickness of approximately 17 micrometers or thinner, and wherein the protective film layer is conformable and has an elongation that is the same or higher than an elongation of the base film.

2. The web of film material of claim 1 , wherein the protective film layer is at least one of optically clear, transparent, translucent, and colored.

3. The web of film material of claim 2 , wherein the protective film layer has a total visual transmittance of greater than 90%.

4. The web of film material of claim 1 , wherein the conformable base film comprises multiple material layers.

5. The web of film material of claim 1 , wherein the conformable base film comprises at least one of a single layer polyvinylchloride film, a double layer polyvinylchloride film, a triple layer polyvinylchloride film, a composite film, a polyester-based film, an acrylic-based film, a polyester film, a polypropylene film, a polyurethane film, and a polyolefin film.

6. The web of film material of claim 1 , wherein the first surface of the conformable base film is a glossy surface.

7. The web of film material of claim 1 , wherein the first surface of the conformable base film has a surface roughness having an Ra value of less than approximately 1 μm.

8. The web of film material of claim 1 , wherein the first surface of the conformable base film has a surface roughness having an Rz value of less than approximately 6 μm.

9. A sheet of film material comprising:
a conformable base film comprising a first surface and an opposite second surface, the conformable base film comprising at least one layer of polyvinyl chloride film;
an adhesive layer comprising:
a first surface bonded to the second surface of the base film; and
an opposite second surface;
a release liner releasably attached to the second surface of the adhesive layer; and
a protective film layer releasably attached to the first surface of the conformable base film without another layer, including any adhesive layer, between the protective film layer and the at least one layer of polyvinyl chloride film such that the protective film layer is in direct contact with the first surface of the conformable base film, and the bonding force between the protective film layer and the first surface of the conformable base film is achieved by weak intermolecular forces, having a bonding force in the range of about 2 to 6 cN/25.4 mm measured at a separation speed of 2286 mm/min, the protective film layer provided in a thickness of approximately 17 micrometers or thinner, and wherein the protective film layer is conformable and has an elongation that is the same or higher than an elongation of the base film.

10. A method of applying a sheet of film material to a substrate, comprising the steps of:
positioning a sheet of film material adjacent to an outer surface of a substrate, wherein the sheet of film material comprises:
a conformable base film comprising a first surface and an opposite second surface, the conformable base film comprising at least one layer of polyvinyl chloride film;
an adhesive layer comprising:
a first surface bonded to the second surface of the base film; and
an opposite second surface;

a release liner releasably attached to the second surface of the adhesive layer; and
a protective film layer releasably attached to the first surface of the conformable base film without another layer, including any adhesive layer, between the protective film layer and the at least one layer of polyvinyl chloride film such that the protective film layer is in direct contact with the first surface of the conformable base film, and the bonding force between the protective film layer and the first surface of the conformable base film is achieved by weak intermolecular forces, having a bonding force in the range of about 2 to 6 cN/25.4 mm measured at a separation speed of 2286 mm/min, the protective film layer provided in a thickness of approximately 17 micrometers or thinner, and wherein the protective film layer is conformable and has an elongation that is the same or higher than an elongation of the base film;
removing the release liner from the second surface of the adhesive layer; and
applying the adhesive layer to the outer surface of the substrate.

11. The method of claim 10 , further comprising a step of removing the protective film layer from the first surface of the film material after applying the adhesive layer to the outer surface of the substrate.

12. The method of claim 10 , further comprising the step of removing the protective film layer from the first surface of the film material before applying the adhesive layer to the outer surface of the substrate.

Assignees

• 3M Innovative Properties Company

Inventors

• Dannewitz Viktor
• Burmeister Ralf
• Meyer Thomas
• Werner Hubert

Classifications

• B32B2307/538

  Roughness · CPC title

• B32B2307/414

  Translucent · CPC title

• B32B2307/412

  Transparent · CPC title

• B32B2307/402

  Coloured · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title