AN IMPROVED HIGH EFFICIENCY PARTICULATE AIR RATED VACUUM BAG MEDIA AND AN ASSOCIATED METHOD OF PRODUCTION

摘要

A vacuum bag media and associated method of production, which includes a first layer (120) that includes an expanded polytetrafluoroethylene membrane and at least one second layer (140) that includes a first component having a first melting point and a second component having a second melting point that is higher than the first melting point, wherein the first layer (120) is attached to the at least one second layer (140). The second layer (140) can include cellulose material, spunbond, nonwoven fabric, and a thermal bond, nonwoven fabric. Attachment of the first layer (120) of material to the at least one second layer (140) of material can occur through thermobonding, e.g., heated gas, infrared heat and heated calender rolls. The application of adhesives and the use of ultrasonic energy can also bond the layers together. Approximately five percent (5%) to fifty percent (50%) of the first component can be selectively melted for superior airflow. Fibers with sheath and core portions may be utilized for the first component and the second component, respectively.