# US 5,702,805 A · Photopolymer holographic decal for plastic substrate

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,702,805 A
- Document ID: US5702805A
- Status: Granted
- Kind: A
- Application number: 08/704,169
- Filed: 1996-08-28
- Granted: 1997-12-30
- Earliest claimed: 1996-08-28
- Assignees: Hughes Electronics Corporation
- Inventors: Khin Swe Yin; Kevin Yu; John E. Gunther
- Web page: https://patentgrep.com/patent/US5702805A

## CPC

- B32B 7/06: permitting easy separation
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/08: of synthetic resin
- B32B 2307/412: Transparent
- Y10S 428/915: Fraud or tamper detecting
- Y10T 428/14: Layer or component removable to expose adhesive
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T 428/31551: Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A hologram decal structure including a photopolymer hologram layer having hologram fringes recorded therein, a transparent pressure sensitive adhesive layer disposed on a first surface of the photopolymer hologram layer, and a transparent urethane coating disposed on a second surface of the photopolymer hologram layer, and techniques for making the hologram decal.

## Claims

### Claim 1

A hologram decal comprising:
a photopolymer hologram layer having hologram fringes recorded therein, said photopolymer hologram having first and second surfaces;
a transparent pressure sensitive adhesive layer disposed on the first surface of said photopolymer hologram layer; and
a transparent hardcoat disposed on the second surface of said photopolymer hologram layer.

### Claim 2 (depends on 1)

The hologram decal of claim 1 wherein said transparent hardcoat comprises urethane.

### Claim 3 (depends on 1)

The hologram decal of claim 1 further including a release liner covering said transparent pressure sensitive adhesive layer.

### Claim 4

A process for making a hologram decal comprising the steps of:
recording a hologram in a hologram layer having a first surface and a second surface;
attaching to the first surface of the hologram layer a laminar structure comprised of a pressure sensitive adhesive layer, and a release liner such that the pressure sensitive layer is against the first surface of the hologram layer; and
applying a transparent coating to the second surface of the hologram layer.