Formation of packaging material

Patent 4398994 Issued on August 16, 1983. Estimated Expiration Date:

September 15, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3647508

Coating selected areas of a substrate
Patent #: 4126511
Issued on: 11/21/1978
Inventor: Ford

Method of making a decorated film with a metal layer in the form of a given pattern Patent #: 4242378
Issued on: 12/30/1980
Inventor: Arai

Inventor

Beckett, Donald E.

Application

No. 06/302370 filed on 09/15/1981

US Classes:

216/54, PATTERN OR DESIGN APPLIED BY TRANSFER101/459, Aluminum, copper or zinc156/345.2, Running length workpiece (e.g., etching indeterminate length strip)156/345.22, With plural etching zones for a single discrete workpiece in apparatus216/102, Metal is elemental aluminum, an alloy, or compound thereof216/41, MASKING OF A SUBSTRATE USING MATERIAL RESISTANT TO AN ETCHANT (I.E., ETCH RESIST)252/79.5, Alkali metal hydroxide containing427/272Mask or stencil utilized

Examiners

Primary: Powell, William A.

Attorney, Agent or Firm

Sim & McBurney

International Classes

B32B 15/08 (20060101)
B44C 1/22 (20060101)
B44C 1/04 (20060101)
B44C 1/00 (20060101)
B44C 1/14 (20060101)
B41M 3/00 (20060101)
B41M 1/28 (20060101)
B41M 1/26 (20060101)
C23F 1/02 (20060101)
B05D 1/32 (20060101)
B65D 65/18 (20060101)
B65D 65/02 (20060101)
H05K 1/00 (20060101)
H05K 3/06 (20060101)

Abstract

A pattern is formed in rapid and continuous manner on aluminized polymer film by printing the aluminum surface with a sodium hydroxide-resistant material, which may be pigmented, contacting the non-overprinted areas of the aluminum with hot aqueous sodium hydroxide solution to dissolve the aluminum rapidly from the base polymeric film and leave unaffected the overprinted areas, and washing the spent sodium hydroxide solution from the film. The steps are carried on a continuous web of aluminized film and result in pattern of opaque areas and transparent areas, corresponding to the overprinted and non-overprinted areas of the film.