Delton R Thompson

6371749, Apr 16, 2002

Jul 23, 1999

09/360090

Delton R. Thompson - Woodbury MN
David A. Olson - St. Paul MN
Pamela A. Percha - Woodbury MN

3M Innovative Properties Company - St. Paul MN

D04H 303

425363, 425446, 425471, 156181

A method and apparatus for tentering nonwoven webs during annealing. The nonwoven web of thermoplastic fibers is restrained on a tentering structure at a plurality of tentering points distributed across an interior portion of the web, rather than just along its edges. The nonwoven web is annealed while restrained on the tentering structure to form a dimensionally stable nonwoven fibrous web, dimensionally stable up to at least the heatsetting temperature. The annealed nonwoven fibrous web is then removed from the tentering structure. In one embodiment, the tentering structure restrains the nonwoven fibrous web in a non-planar configuration during the annealing process. The tentering structure includes a plurality of tentering points projecting distally from a tentering support. The tentering points are positioned to be engaged with an interior portion of the web, thus restraining the web during annealing.

6592988, Jul 15, 2003

Dec 29, 1999

09/474711

Delton R. Thompson - Woodbury MN
Thomas P. Klun - Lakeland MN
William M. Lamanna - Stillwater MN

3M Innovative Properties Company - St. Paul MN

D02G 300

428375, 428394, 252 862, 442 79, 442 82, 442 89

A water- and oil-repellent, antistatic composition comprises (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and (ii) at least one weakly coordinating anion, the conjugate acid of the anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that the anion is organic or fluoroorganic when the cation is a metal; (b) at least one fluorochemical repellency-imparting additive or repellent; and (c) at least one insulating material. The composition exhibits good antistatic and repellency characteristics.

6784237, Aug 31, 2004

Jun 11, 2003

10/458971

Delton R. Thompson - Woodbury MN
Thomas P. Klun - Lakeland MN
William M. Lamanna - Stillwater MN

3M Innovative Properties Company - St. Paul MN

C08L 100

524462, 428375, 4284111, 428421, 428413, 4284231

A water- and oil-repellent, antistatic composition comprises (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and (ii) at least one weakly coordinating anion, the conjugate acid of the anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that the anion is organic or fluoroorganic when the cation is a metal; (b) at least one fluorochemical repellency-imparting additive or repellent; and (c) at least one insulating material. The composition exhibits good antistatic and repellency characteristics.

7361706, Apr 22, 2008

Feb 24, 2004

10/785332

Delton R. Thompson - Woodbury MN, US
Thomas P. Klun - Lakeland MN, US
William M. Lamanna - Stillwater MN, US

3M Innovative Properties Company - St. Paul MN

C08K 5/02
B32B 27/18

524462, 524463, 524910, 428421, 428422, 252 862, 442 82, 442 88

A water- and oil-repellent, antistatic composition comprises (a) at least one nonpolymeric ionic salt consisting of (i) at least one cation selected from the group consisting of monovalent metal cations, divalent metal cations, and organic onium cations, and (ii) at least one weakly coordinating anion, the conjugate acid of the anion having an acidity greater than or equal to that of a hydrocarbon sulfonic acid, and with the proviso that the anion is organic or fluoroorganic when the cation is a metal; (b) at least one fluorochemical repellency-imparting additive or repellent; and (c) at least one insulating material. The composition exhibits good antistatic and repellency characteristics.

20040113309, Jun 17, 2004

Dec 5, 2003

10/728555

Delton Thompson - Woodbury MN, US
David Olson - St. Paul MN, US
David Brownlee - St. Paul MN, US
Pamela Percha - Woodbury MN, US
Myles Brostrom - Stillwater MN, US

3M Innovative Properties Company

D01D005/12

264/210800, 264/235000

New fibrous nonwoven webs are taught that comprise a mass of polyethylene terephthalate fibers that exhibit a double melting peak on a DSC plot: one peak is representative of a first molecular portion within the fiber that is in non-chain-extended crystalline form, and the other peak is representative of a second molecular portion within the fiber that is in chain-extended crystalline form and has a melting point elevated over that of the non-chain-extended crystalline form. Webs comprising fibers having such a morphology have a unique combination of durability and dimensional stability. The fibers are generally autogenously bonded at points of fiber intersection.

20040131836, Jul 8, 2004

Jan 2, 2003

10/335752

Delton Thompson - Woodbury MN, US

3M Innovative Properties Company

B32B003/26
B32B007/12
B32B015/04

428/304400, 428/343000, 428/354000

Pore plugging is reduced when laminating an airflow resistive membrane to a thermoplastic hot melt adhesive, by treating the membrane to reduce its surface energy. This enables fabrication of acoustical laminates incorporating substantial amounts of recycled fibrous insulating mat manufacturing waste, and permits design of the laminate based primarily on one-quarter wavelength sound absorption considerations and control of the porosity and interfacial adhesion of the airflow resistant membrane.

20040231914, Nov 25, 2004

Jul 1, 2004

10/884544

Delton Thompson - Woodbury MN, US
Xiaohe Liu - Woodbury MN, US

3M Innovative Properties Company

E04B001/82
E04B009/00
E04B002/02

181/284000, 181/286000, 181/288000

A sound absorptive multilayer composite having an air-impermeable barrier, an air-permeable reinforcing core having an airflow resistance of at least about 100 mks Rayls and a thickness at least about the final composite thickness, and a semipermeable airflow-resistive decorative membrane having an airflow resistance of about 500 to about 4000 mks Rayls can provide improved acoustic performance while maintaining a low thickness.

20040231915, Nov 25, 2004

Jul 1, 2004

10/884545

Delton Thompson - Woodbury MN, US
Xiaohe Liu - Woodbury MN, US

3M Innovative Properties Company

E04B001/82
E04B002/02

181/290000, 181/286000

A sound absorptive multilayer composite having an air-impermeable barrier, an air-permeable reinforcing core having an airflow resistance of at least about 100 mks Rayls and a thickness at least about the final composite thickness, an air-permeable open cell foam or fibrous pad having an airflow resistance less than about 2000 mks Rayls and a thickness at least about {fraction (1/10)} the final composite thickness and a semipermeable airflow-resistive membrane having an airflow resistance of about 500 to about 4000 mks Rayls can provide improved acoustic performance. For example, existing vehicular headliner designs may be improved by adding a properly chosen and properly positioned semipermeable airflow-resistive membrane, a properly chosen and properly positioned air- impermeable barrier, or a properly chosen and properly positioned open cell foam layer.