Laminate of metal sheet material and threads bonded thereto, as well as processes for the manufacture thereof

Patent 4489123 Issued on December 18, 1984. Estimated Expiration Date:

January 8, 2002. 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

Metal-clad dielectric sheeting Patent #: 4035694
Issued on: 07/12/1977
Inventor: Barton , et al.

Inventors

Assignee

Technische Hogeschool Delft

Application

No. 06/338036 filed on 01/08/1982

US Classes:

428/213, Thickness (relative or absolute)156/229, With stretching156/285, Direct application of vacuum or fluid pressure during bonding428/215, Absolute thicknesses specified428/216, No layer or component greater than 5 mils thick428/416, Next to metal428/418, Next to metal428/425.8, Next to free metal428/458, Next to polyester, polyamide or polyimide (e.g., alkyd, glue, or nylon, etc.)428/474.4, Of polyamide428/902, HIGH MODULUS FILAMENT OR FIBER428/910, PRODUCT WITH MOLECULAR ORIENTATION442/233Plural metallic films or foils or sheets

Examiners

Primary: McCamish, Marion E.

Attorney, Agent or Firm

Stevens, Davis, Miller & Mosher

International Classes

B32B 15/08 (20060101)
B29C 70/08 (20060101)
B64C 1/00 (20060101)

Foreign Application Priority Data

1981-01-09 NL

Abstract

The invention relates to a laminate composed of two, three, four or more metal sheets. The metal sheets, which may for instance be of an aluminum alloy, are bonded together by means of adhesive layers. In the adhesive layers there are embedded poly-paraphenylene terephthalamide or carbon threads having a high modulus of elasticity. In the unloaded state of the laminate in its entirety there is a compressive stress in the range of 0 to 200 or 300 N/mm2 in each metal sheet and a tensile stress in each layer with threads. The material according to the invention is in the first place meant for use in the field of aircraft or spacecraft engineering. However, it also may with advantage find application in various other fields of engineering where high demands are made on static, dynamic fatigue properties and damage tolerance.