Abstract: A multilayer film comprises first, second, and third layers. The second layer is directly adhered to the first and third layers. The first layer comprises at least about 40 wt % of one or more modified polyamides. The second layer comprises at least about 40 wt % of one or more unmodified polyamides. The third layer comprises at least about 40 wt % of one or more selected tie polymers. The film may comprise one or more UV light absorbers. The film has good intra-film bond strength.

Abstract: A multilayer film comprises first, second, and third layers. The second layer is directly adhered to the first and third layers. The first layer comprises at least about 40 wt % of one or more modified polyamides. The second layer comprises at least about 40 wt % of one or more unmodified polyamides. The third layer comprises at least about 40 wt % of one or more selected tie polymers. The film may comprise one or more UV light absorbers. The film has good intra-film bond strength.

Abstract: A multilayer film comprises first, second, and third layers. The second layer is directly adhered to the first and third layers. The first layer comprises at least about 40 wt % of one or more modified polyamides. The second layer comprises at least about 40 wt % of one or more unmodified polyamides. The third layer comprises at least about 40 wt % of one or more selected tie polymers. The film may comprise one or more UV light absorbers. The film has good intra-film bond strength.

Abstract: A bag comprises an upper chamber and a lower chamber. The upper chamber comprises an inlet end defining an inlet opening. The lower chamber defines a lower chamber interior volume less than the upper chamber interior volume. A strainer is between the bottom end of the upper chamber and the top end of the lower chamber. The strainer places the upper chamber interior volume in fluid communication with the lower chamber interior volume. The bag wall may define an outlet port. A filter patch may be attached to the bag wall to cover the outlet port. The filter patch may be adapted to entrap airborne particles having a diameter of one micron or greater carried by air passing from the bag interior volume through the filter patch. The bag may be useful in enhancing the detectability of and in reducing the exposure to contaminants that may be present in mail deposited in the bags.

Abstract: A mail collection apparatus comprising a housing defining an access opening. An access door is supported by the housing. The access door is moveable between a door open position, providing access to the housing interior space through the access opening, and a door closed position blocking the access opening. A chute is supported by the housing. The chute comprises an inlet end defining a chute inlet opening adapted for receiving mail and a chute outlet end defining a chute outlet opening opposite the inlet end. A bag comprises an inlet portion defining a bag inlet opening.

Abstract: A mail collection apparatus comprising a housing defining an access opening. An access door is supported by the housing. The access door is moveable between a door open position, providing access to the housing interior space through the access opening, and a door closed position blocking the access opening. A chute is supported by the housing. The chute comprises an inlet end defining a chute inlet opening adapted for receiving mail and a chute outlet end defining a chute outlet opening opposite the inlet end. A bag comprises an inlet portion defining a bag inlet opening.

Abstract: A bag comprises an upper chamber and a lower chamber. The upper chamber comprises an inlet end defining an inlet opening. The lower chamber defines a lower chamber interior volume less than the upper chamber interior volume. A strainer is between the bottom end of the upper chamber and the top end of the lower chamber. The strainer places the upper chamber interior volume in fluid communication with the lower chamber interior volume. The bag wall may define an outlet port. A filter patch may be attached to the bag wall to cover the outlet port. The filter patch may be adapted to entrap airborne particles having a diameter of one micron or greater carried by air passing from the bag interior volume through the filter patch. The bag may be useful in enhancing the detectability of and in reducing the exposure to contaminants that may be present in mail deposited in the bags.

Abstract: A heat sealable and shrinkable, coextruded, multi-layer packaging film having a propylene homopolymer base layer and a skin layer of a preferred blend of 60% to 80% propylene-ethylene copolymer with propylene homopolymer provides a sealing temperature range of up to 30.degree. C.

Abstract: A heat sealable and shrinkable, coextruded, multi-layer packaging film having a propylene homopolymer base layer and a skin layer of a preferred blend of 60% to 80% propylene-ethylene copolymer with propylene homopolymer provides a sealing temperature range of up to 30.degree. C.

Abstract: In the process of extruding tubular thermoplastic film or tape, the production rate can be improved by using a smooth support plug to stabilize and shape the extrudate after it has been cooled and at least partially solidified. A principal function of the support plug is to assist in supporting the long slender column of partially solidified extrudate which is above the plug. The result is a significant increase in the output of the extrusion process.

Abstract: An apparatus and process for laminating a flexible sheet of covering material to a foamed thermoplastic sheet wherein the process includes the steps of expanding aged or directly extruded thermoplastic foam sheet by heat until the foam has reached its softening point; heating the covering material to above the melting point of the foam; and, applying the heated covering material to the softened foam sheet to bond the sheet to the foam thereby forming a laminated product.