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US 8,999,098 B2Granted
Backing for pre-preg material
AssigneeOrbital ATK, Inc.
InventorPeter G. Turner
Life of this patent
Estimating the term…
Abstract
A method of preparing pre-impregnated (pre-preg) material is provided. The method comprises treating a first surface of a backing with a corona discharge to enhance surface adhesion and applying the pre-preg material to the treated surface of the backing to form a pre-preg material with backing.
Claims29
A method of forming a composite structure comprising:
- breaking oxygen molecules into their atomic form with a corona discharge;
- bonding the atomic form of the oxygen molecules to molecules in a first surface of a removable backing material;
- applying a pre-preg material to the first surface of the removable backing material to form a pre-preg material with removable backing, the pre-preg material comprising a curable resin;
- positioning the pre-preg material with removable backing on at least one forming surface of a tool;
- pressing a second surface of the removable backing material of the pre-preg material to apply the pre-preg material on the at least one forming surface of the tool and form the pre-preg material into a desired shape;
- removing the removable backing material from the pre-preg material with removable backing material after the pre-preg material is shaped;
- and
- curing the pre-preg material.
5 more elements
A method of forming a composite structure comprising:
- applying sections of a feedstock comprising a resin and fibers to a removable backing material to form a sheet of pre-preg having a desired fiber orientation relative to a side of the sheet of pre-preg, the desired fiber orientation comprising a non-zero degree angle fiber orientation, and a first surface of the removable backing material bonded to the feedstock through oxygen molecules broken into their atomic form with a corona discharge;
- applying the sheet of pre-preg having the desired fiber orientation to at least one surface of a tool to form a pre-preg having a desired shape;
- removing the removable backing material from the pre-preg having the desired shape;
- and
- curing the pre-preg having the desired shape.
2 more elements
A method of forming a composite structure comprising:
- positioning a sheet of pre-preg material with a removable backing material on at least one forming surface of a tool, the sheet of pre-preg material with the removable backing material comprising sections of a feedstock having a fiber orientation relative to a side of the sheet of pre-preg of a non-zero degree angle fiber orientation applied to a first surface of the removable backing material, the first surface of the removable backing material bonded to the sheet of pre-preg material through oxygen molecules broken into their atomic form with a corona discharge;
- forcing the sheet of pre-preg material onto the at least one forming surface of the tool by pressing a second surface of the removable backing material to form the sheet of pre-preg material into a desired shape;
- removing the removable backing material from the sheet of pre-preg material after the sheet of pre-preg material is shaped;
- and
- curing the sheet of pre-preg material.
2 more elements
A method of forming a sheet of pre-preg material with a removable backing for a composite structure, the method comprising:
- breaking oxygen molecules into their atomic form with a corona discharge;
- bonding the atomic form of the oxygen molecules to molecules in a first surface of a removable backing;
- orienting a feedstock comprising a resin and fibers at a desired fiber orientation relative to a lateral side of the removable backing comprising a non-zero degree angle fiber orientation;
- applying sections of the feedstock to the first surface of the removable backing to form a sheet of pre-preg material including the fibers at the desired fiber orientation relative to the lateral side of the removable backing;
- positioning the sheet of pre-preg material on at least one forming surface of a tool;
- pressing a second surface of the removable backing to apply the sheet of pre-preg material on the at least one forming surface of the tool and form the sheet of pre-preg material into a desired shape;
- removing the removable backing from the sheet of pre-preg material after the sheet of pre-prep material is shaped;
- and
- curing the sheet of pre-preg material.
6 more elements
A method of forming a composite structure comprising:
- applying a pre-preg material to a first surface of a removable backing material to form a pre-preg material with removable backing, the pre-preg material comprising a curable resin, and the first surface of the removable backing material bonded to the pre-preg material through oxygen molecules broken into their atomic form with a corona discharge;
- positioning the pre-preg material with removable backing on at least one forming surface of a tool;
- pressing a second surface of the removable backing material of the pre-preg material to apply the pre-preg material on the at least one forming surface of the tool and form the pre-preg material into a desired shape;
- removing the removable backing material from the pre-preg material with removable backing material after the pre-preg material is shaped;
- and
- curing the pre-preg material.
3 more elements
Dependencies are inferred from the claim text.