Patent Number: 6,251,154

Title: Dust bag and method of production

Abstract: A dust bag comprises a filter bag consisting of a filter material. In a first wall portion of the filter bag, an inlet opening is provided through which the air flow to be cleaned gets into the filter bag. On the inner surface of the wall portion opposite the inlet opening, there lies a protective layer of a resistant material of great tensile strength. This protective layer extends as a strip through the filter bag and prevents damage to the inner surface of the filter bag caused by particles striking the same.

Inventors: van Rossen; Leonard M. (BK Bunnik, NL)

Assignee: 3M Innovative Properties Company

International Classification: B32B 5/22 (20060101); A47L 9/14 (20060101); B01D 39/18 (20060101); B01D 39/16 (20060101); B31B 39/00 (20060101); B01D 046/02 ()

Expiration Date: 06/26/2018