Protective coatings for documents

• US 4,428,997 A
• Filed: 12/26/1979
• Issued: 01/31/1984
• Est. Priority Date: 12/26/1979
• Status: Expired due to Term

• Current Assignee: Yama Capital, LLC
• Original Assignee: Polaroid Corporation (PLR IP Holdings LLC)
• Inventors: Shulman, Joseph
• Primary Examiner(s): HERBERT JR, THOMAS
• Application Number:
  US06/107,415
• Time in Patent Office: 1,497 Days
• Field of Search: 428/332, 428/915, 428/40, 428/916, 428/483, 428/336, 428/480, 428/202, 428/204, 427/7, 427/385.5, 283/7, 283/8 R, 350/163, 350/165
• US Class Current: 428/202
• CPC Class Codes: B42D 25/00 Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof printing processes to produce identification or security features B41M3/14
• CPC Class Codes: B42D 25/20 characterised by a particular use or purpose
• CPC Class Codes: B42D 25/23 Identity cards
• CPC Class Codes: B42D 25/378 Special inks
• CPC Class Codes: B42D 25/45 Associating two or more layers
• CPC Class Codes: B42D 25/47 using adhesives
• CPC Class Codes: G06K 19/041 Constructional details G06K19/06 takes precedence
• CPC Class Codes: Y10S 283/901 Concealed data
• CPC Class Codes: Y10S 283/904 Credit card
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10S 428/915 Fraud or tamper detecting
• CPC Class Codes: Y10S 428/916 Fraud or tamper detecting
• CPC Class Codes: Y10T 428/1462 Polymer derived from material having at least one acrylic or alkacrylic group or the nitrile or amide derivative thereof [e.g., acrylamide, acrylate ester, etc.]
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/2486 with outer strippable or release layer
• CPC Class Codes: Y10T 428/24876 Intermediate layer contains particulate material [e.g., pigment, etc.]
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/31786 Of polyester [e.g., alkyd, etc.]
• CPC Class Codes: Y10T 428/31797 Next to addition polymer from unsaturated monomers

Abstract

Protective coatings for securing documents from alteration comprising a noncohesive adhesive layer integrated with a verification feature and a method for applying such coatings.

Claims

1. A protective coating assembly for an information bearing document comprising a polyester carrier sheet peelably bonded to an arrangement of two noncohesive layers of a polyethylene-acrylic acid resin adhesive sandwiching an arrangement of a tightly printed pattern of a nacreous pigment composition.

2. The protective coating assembly of claim 1 wherein said nacreous pigment composition comprises a bismuth oxychloride composition having a thickness ranging from about 0.1 to about 0.4 mil.

3. A method for securing a document comprising:

positioning an adhesive surface of a protective coating assembly over an information-bearing surface of a document, said protective coating assembly comprising a polyester carrier sheet peelably bonded to an arrangement of two noncohesive layers of polyethylene-acrylic acid resin adhesive sandwiching an arrangement of a tightly printed pattern of a nacreous pigment composition;

securely bonding said adhesive surface to the document by heat lamination to form a security-protective coating; and

removing the peelably bonded carrier sheet from the adhesive arrangement.

4. The method of claim 3 wherein said adhesive surface is securely bonded to the document using laminating rollers at a temperature of about 210°

F.