System and method of lamination

Patent metadata

Field	Value
Publication number	US-12496765-B2
Application number	US-202218275630-A
Country	US
Kind code	B2
Filing date	Feb 4, 2022
Priority date	Feb 16, 2021
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

A system for laminating an adhesive to a component includes a liner including a first major surface facing the component and a second major surface opposite to the first major surface. An adhesive is disposed on the first major surface. The adhesive is configured to be laminated to the component. A support pad engages the second major surface of the liner for laminating the adhesive to the component. Each of the support pad and the liner undergoes deformation upon engagement of the support pad with the liner. The support pad includes a body made of an elastic pad material and includes an upper surface facing the component, a lower surface opposite to the upper surface, and a lateral surface disposed between the upper surface and the lower surface. The liner includes a conformable liner material having a liner elastic modulus from about 5 megapascals (MPa) to about 650 MPa.

First claim

The invention claimed is:

1 . A system for laminating an adhesive to a component, the system comprising:
a liner comprising a first major surface facing the component and a second major surface opposite to the first major surface; an adhesive disposed on the first major surface of the liner, the adhesive configured to be laminated to the component; and a support pad engaging the second major surface of the liner for laminating the adhesive to the component, wherein each of the support pad and the liner undergoes deformation upon engagement of the support pad with the liner, the support pad comprising:
a body made of an elastic pad material, the body comprising:
an upper surface facing the component;
a lower surface opposite to the upper surface; and
a lateral surface disposed between the upper surface and the lower surface;

wherein the liner comprises a conformable liner material having a liner elastic modulus from about 5 MPa to about 650 MPa, and wherein a yield stress of the liner material is from about 10 MPa to about 100 MPa.

2 . The system of claim 1 , wherein the liner material comprises at least one of polyurethane, polyethylene, polypropylene, ethylene-vinyl acetate, and polyvinyl butyral.

3 . The system of claim 1 , wherein a liner tangent modulus of the liner material is from about 1 MPa to about 1.5 MPa after yield.

4 . The system of claim 1 , wherein:
the lateral surface comprises a curved portion extending from the upper surface, the curved portion defining an average corner radius; the average corner radius is equal to an original average corner radius in an undeformed state of the body; the average corner radius is equal to a deformed average corner radius in a deformed state of the body; and the elastic pad material has a pad elastic modulus from about 1 MPa to about 35 MPa, such that a difference between the deformed average corner radius and the original average corner radius is less than or equal to 25% of the original average corner radius.

5 . The system of claim 1 , wherein:
the lateral surface comprises a curved portion extending from the upper surface, the curved portion defining an average corner radius; the average corner radius is equal to an original average corner radius in an undeformed state of the body; the average corner radius is equal to a deformed average corner radius in a deformed state of the body; and the liner elastic modulus is about 5 MPa, such that a difference between the deformed average corner radius and the original average corner radius is less than or equal to 10% of the original average corner radius.

6 . The system of claim 4 , wherein:
the lateral surface defines a maximum radius; and the maximum radius is equal to an original maximum radius in the undeformed state of the body, such that a change in the maximum radius between the deformed state and the undeformed state of the body is less than 5% of the original maximum radius.

7 . The system of claim 1 , wherein:
the upper surface defines a contact radius; the contact radius is equal to an original contact radius in an undeformed state of the body; and the body defines a height from the upper surface to the lower surface, wherein the height is about 15 mm, such that a change in the contact radius between a deformed state and the undeformed state of the body is less than 5% of the original contact radius.

8 . The system of claim 7 , wherein the liner elastic modulus is about 5 MPa, such that the change in the contact radius between the deformed state and the undeformed state of the body is less than 2% of the original contact radius.

9 . The system of claim 5 , wherein the second major surface of the liner engages the lateral surface during lamination of the adhesive to the component, such that an exit angle is defined between the liner and a longitudinal direction, and wherein the exit angle is about 90 degrees.

10 . The system of claim 1 , wherein the upper surface of the body is substantially planar.

11 . The system of claim 1 , wherein a pad elastic modulus of the elastic pad material is from about 1 MPa to about 35 MPa.

12 . A method of laminating an adhesive to a component, the method comprising:
providing a liner comprising a first major surface and a second major surface, and an adhesive disposed on the first major surface of the liner; pressing the second major surface of the liner on an upper surface of a support pad, such that the second major surface of the liner engages a lateral surface of the support pad and the support pad deforms; and moving the support pad against the component, such that the adhesive is laminated to the component;
wherein:
the support pad is made of an elastic pad material; and
the liner comprises a conformable liner material having a liner elastic modulus from about 5 MPa to about 650 MPa, and wherein a yield stress of the liner material is from about 10 MPa to about 100 MPa.

13 . The method of claim 12 , wherein the liner material comprises at least one of polyurethane, polyethylene, polypropylene, ethylene-vinyl acetate, and polyvinyl butyral.

14 . The method of claim 12 , wherein:
the lateral surface comprises a curved portion extending from the upper surface, the curved portion defining an average corner radius; the average corner radius is equal to an original average corner radius in an undeformed state of the support pad; the average corner radius is equal to a deformed average corner radius in a deformed state of the support pad; and the elastic pad material has a pad elastic modulus from about 1 MPa to about 35 MPa, such that a difference between the deformed average corner radius and the original average corner radius is less than or equal to 25% of the original average corner radius.

15 . The method of claim 12 , wherein:
the lateral surface comprises a curved portion extending from the upper surface, the curved portion defining an average corner radius; the average corner radius is equal to an original average corner radius in an undeformed state of the support pad; the average corner radius is equal to a deformed average corner radius in a deformed state of the support pad; and the liner elastic modulus is about 5 MPa, such that a difference between the deformed average corner radius and the original average corner radius is less than or equal to 10% of the original average corner radius.

16 . The method of claim 12 , wherein pressing the second major surface of the liner on the upper surface of the support pad further comprises stretching the liner in a vertical direction by a vertical distance, and wherein the vertical distance is from about 4 mm to about 10 mm.

17 . The method of claim 12 , wherein the support pad defines a height from the upper surface to a lower surface of the support pad, and wherein the height is from about 5 mm to about 20 mm.

18 . The method of claim 17 , wherein:
the upper surface defines a contact radius; the contact radius is equal to an original contact radius in an undeformed state of the support pad; and the height of the support pad is about 15 mm, such that a change in the contact radius between the deformed state and the undeformed state of the support pad is less than 5% of the original contact radius.

19 . The method of claim 15 , wherein the second major surface of the liner engages the lateral surface during lamination of the adhesive to the component, such that an exit angle is defined between the liner and a longitudinal direction, and wherein

Assignees

• 3M Innovative Properties Company

Inventors

• Eismin Ryan J
• Mcdaniel David J
• Hao Encai

Classifications

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• B32B2307/732

  Dimensional properties · CPC title

• B32B2307/54

  Yield strength; Tensile strength · CPC title

• B32B2250/24

  All layers being polymeric · CPC title

• B32B2250/02

  2 layers · CPC title