Laminates and methods of making same

a technology of laminates and optical films, applied in the field of laminates, can solve the problems of aesthetic defects, adversely affecting the optical performance of the film, and and achieve the effects of reducing the occurrence or degree of delamination, preventing edge delamination of the optical film, and reducing the problem of edge delamination

Inactive Publication Date: 2007-03-08
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a method for preventing or minimizing edge separation during manufacturing processes used to create laminated glass panels. By combining different materials into a single layer, it becomes difficult if there are small gaps between them. These gaps may cause edge delamination. To solve this issue, the inventors propose adding a special type of edge protection on certain areas of the lens called "periphery". This helps to protect these areas from damage caused by external factors like weather conditions.

Problems solved by technology

This patent describes how conventional methods of making glazings involve sandwiching layers of rigid glass or plastic sheets between rigid sheets. However, this method has limitations when applied to windows due to its limited ability to reflect infrared light. To solve these issues, there was developed a new type of lamination that includes a special film called an IR reflector. This film helps reduce heat transfer through the glazing while still allowing it to transmit visible light.

Method used

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  • Laminates and methods of making same
  • Laminates and methods of making same
  • Laminates and methods of making same

Examples

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examples

[0072] In making exemplary glazing laminates according to the present invention the following items can be used:

TYZOR ™ TPTA tetraisopropyl titanate (TPT) primer,available from E.I. DuPontdeNemours & Co. (Wilmington, DE)SAFLEX AR 110.38 mm polyvinyl butyral (PVB) available fromSolutia Inc., (St. Louis, MO)SRFSolar Reflecting Film (SRF), a multi-layer optical filmmade by Minnesota Mining and ManufacturingCompany.*AutoclaveScholz Maschinenbau GmbH & Co. KG (Coesfeld,Germany) or Melco Steel Inc. (Azusa, California)

*In accordance with the teachings, for example, of one or more of U.S. Patents Nos. 5,360,659 and 6,157,490, and PCT Publications Nos. WO 99 / 36248, WO 01 / 96104, and WO 02 / 061469.

[0073] Typically, the PVB does not become sufficiently transparent until after being heated to the point of fully bonding to the SRF and its corresponding glazing component. In addition, each pair of glazing components used to make a windshield were made of glass and generally equal in size (i.e

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Abstract

An optical sheet suitable for use in a laminate comprising at least one glazing component. The optical sheet comprises a non-metallic multi-layer optical film that has multiple optical layers, and can be, for example, a solar energy reflective film (e.g., an infrared radiation reflective film). The multiple layers are thermally and/or otherwise fused together along all, substantially all or at least a substantial portion of the peripheral edge of at least the optical film, so as to prevent or at least substantially reduce the occurrence or degree of delamination of the multiple layers along all, substantially all, or the substantial portion of the peripheral edge of the optical film. At least the optical film can be dimensioned such that, when bonded to a glazing component, all, substantially all or at least the substantial portion of the peripheral edge of at least the optical film is positionable so as to be co-extensive with or substantially co-extensive with a corresponding portion of the peripheral edge of the glazing component to which the optical sheet is to be bonded.

Description

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Claims

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Application Information

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Owner 3M INNOVATIVE PROPERTIES CO
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