Patch Vent for Flexible Packaging Bags
AssigneeEmmerson Packaging
InventorsEmlyn Mulford, Alan P. Dewberry
Life of this patent
Estimating the term…
Abstract
A method of manufacture and an adhesive patch vent is provided for application to a flexible packaging material. A fabric material has an adhesive applied to its surface. The adhesive being applied to outer portions of the fabric material where a central portion is adhesive free. The adhesive patch vent is applied to an interior of a flexible package material where the adhesive free portion aligns with a perforation in the flexible package material. The adhesive vent patch enables air to be expelled from a package but is resistant to damage to the exterior of the bag. In addition a food grade oil resistant adhesive is utilized.
Claims20
An adhesive patch vent for application to a flexible packaging material, the patch vent comprising:
- a fabric material;
- and
- an adhesive applied to a surface of the fabric material, the adhesive being applied to outer portions of the fabric material where a central portion is adhesive free;
- wherein the adhesive patch vent is applied to an interior of the flexible package material where the central adhesive free portion aligns with a perforation in the flexible package material.
A method of manufacturing a flexible package with an adhesive patch vent, the method comprising:
- receiving a rollstock material;
- perforating the rollstock material to form a vent opening;
- applying the adhesive patch vent to a side of the rollstock over the perforation in the rollstock material;
- forming a flexible package having the adhesive patch vent on an interior of the package.
A method of manufacturing an adhesive patch vent for application to flexible packages, the method comprising:
- cutting a filtering fabric to fit the adhesive patch vent;
- cutting a cover out of a plastic material;
- cutting an opening within the cover to be aligned with a perforation in a packaging material;
- adhering the filtering fabric to the cover;
- applying the filtering fabric to the cover.
Dependencies are inferred from the claim text.