David L Mortenson

US Patent:

6991695, Jan 31, 2006

Filed:

Oct 10, 2002

Appl. No.:

10/268118

Inventors:

Bruce E. Tait - Woodbury MN, US
John A. Wheatley - Lake Elmo MN, US
Steven J. Dobrzynski - Osceola WI, US
David K. Mortenson - White Bear Lake MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 31/00
B32B 35/00

US Classification:

156248, 156268, 264400

Abstract:

Polymeric multilayer optical films, and laminate bodies that include such films, are cut or subdivided into one or more discrete pieces by removably applying a first and second liner to opposed major surfaces of the multilayer optical film. Laser radiation is then directed at the multilayer optical film through the first liner in such a way as to produce cut lines that define a plurality of pieces of the first liner and of the multilayer optical film. Thereafter, the plurality of pieces of the first liner are removed from the plurality of pieces of the multilayer optical film while the pieces of multilayer optical film are supported by the second liner. Application of the first liner to the multilayer optical film can be accomplished with electrostatics.

US Patent:

7271951, Sep 18, 2007

Filed:

May 18, 2005

Appl. No.:

11/132114

Inventors:

Michael F. Weber - Shoreview MN, US
Diane North - Inver Grove Heights MN, US
David K. Mortenson - White Bear Lake MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

F21V 9/04
F21V 9/06
G02B 5/08
G02B 5/20
B42D 15/00
G06K 19/02
G02B 5/28

US Classification:

359359, 359589, 283 91, 235488

Abstract:

New constructions of multilayer optical films, laminates thereof, and cards incorporating same are disclosed. In a card, the multilayer optical film can be sandwiched between relatively thick polymer layers using adhesive layers that are at least 0. 5 mils thick but that may collectively account for no more than 3 mils of thickness. The cards can if desired be highly transmissive in the visible yet highly opaque in portions of the infrared. The resulting cards can have reduced angel hair formation during card stamping, increased resistance to delamination, and reduced haze.

US Patent:

7396493, Jul 8, 2008

Filed:

Oct 10, 2002

Appl. No.:

10/268354

Inventors:

Bruce E. Tait - Woodbury MN, US
Steven J. Dobrzynski - Osceola WI, US
David K. Mortenson - White Bear Lake MN, US
John A. Wheatley - Lake Elmo MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

B29D 11/00
D01D 5/16

US Classification:

264 17, 2642102, 21912166, 21912172, 225 2, 428 57, 428101

Abstract:

Polymeric multilayer optical films, and laminate bodies that include such films, are provided with a melt zone that extends between a first and second portion of the multilayer optical film. If a shearing operation or other external influence acts on the film in the first portion that causes delamination of individual layers of the multilayer optical film, the melt zone is effective to prevent the delamination from propagating from the first portion to the second portion. The melt zone is characterized at least in part by a deformation of individual layers of the multilayer optical film. The melt zone can be positioned to extend along and proximate to some or all of a periphery of the multilayer optical film.

US Patent:

20030218278, Nov 27, 2003

Filed:

May 21, 2002

Appl. No.:

10/152412

Inventors:

Bruce Tait - Woodbury MN, US
John Wheatley - Lake Elmo MN, US
Steven Dobrzynski - Osceola WI, US
David Mortenson - White Bear Lake MN, US

International Classification:

B29D011/00
G02B001/12
B29C037/00
B29C035/08

US Classification:

264/400000, 264/001370, 264/002700, 264/160000

Abstract:

Polymeric multilayer optical films, and laminate bodies that include such films, are cut or subdivided into one or more discrete pieces by removably applying a first and second liner to opposed major surfaces of the multilayer optical film. Laser radiation is then directed at the multilayer optical film through the first liner in such a way as to produce cut lines that define a plurality of pieces of the first liner and of the multilayer optical film. Thereafter, the plurality of pieces of the first liner are removed from the plurality of pieces of the multilayer optical film while the pieces of multilayer optical film are supported by the second liner. Application of the first liner to the multilayer optical film can be accomplished with electrostatics.

US Patent:

20030219571, Nov 27, 2003

Filed:

May 21, 2002

Appl. No.:

10/152411

Inventors:

Bruce Tait - Woodbury MN, US
Steven Dobrzynski - Osceola WI, US
David Mortenson - White Bear Lake MN, US
John Wheatley - Lake Elmo MN, US

International Classification:

B32B023/02

US Classification:

428/192000, 428/212000

Abstract:

Polymeric multilayer optical films, and laminate bodies that include such films, are provided with a melt zone that extends between a first and second portion of the multilayer optical film. If a shearing operation or other external influence acts on the film in the first portion that causes delamination of individual layers of the multilayer optical film, the melt zone is effective to prevent the delamination from propagating from the first portion to the second portion. The melt zone is characterized at least in part by a deformation of individual layers of the multilayer optical film. The melt zone can be positioned to extend along and proximate to some or all of a periphery of the multilayer optical film.

US Patent:

20060191630, Aug 31, 2006

Filed:

Jan 30, 2006

Appl. No.:

11/342962

Inventors:

Bruce Tait - Woodbury MN, US
John Wheatley - Lake Elmo MN, US
Steven Dobrzynski - Osceola WI, US
David Mortenson - White Bear Lake MN, US

International Classification:

B32B 38/04
B32B 37/00
B32B 38/10

US Classification:

156272800, 156247000, 156248000, 156250000, 156270000

Abstract:

Polymeric multilayer optical films, and laminate bodies that include such films, are cut or subdivided into one or more discrete pieces by removably applying a first and second liner to opposed major surfaces of the multilayer optical film. Laser radiation is then directed at the multilayer optical film through the first liner in such a way as to produce cut lines that define a plurality of pieces of the first liner and of the multilayer optical film. Thereafter, the plurality of pieces of the first liner are removed from the plurality of pieces of the multilayer optical film while the pieces of multilayer optical film are supported by the second liner. Application of the first liner to the multilayer optical film can be accomplished with electrostatics.

US Patent:

6797396, Sep 28, 2004

Filed:

Jun 9, 2000

Appl. No.:

09/590924

Inventors:

Yaoqi J. Liu - Maplewood MN
Jeffrey A. Boettcher - Falcon Heights MN
Heather K. Kranz - Blaine MN
Andrew T. Ruff - Mendota Heights MN
Brian L. Koster - Mendota Heights MN
David K. Mortenson - White Bear Lake MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B32B 2708

US Classification:

428483, 428426, 428430, 428441, 428480, 428910, 359359, 359487, 359494, 359577, 359580, 359584, 359586, 359589, 359601

Abstract:

A birefringent dielectric multilayer film that reflects in a wavelength region of interest, and preferably reflects at least 50% of light in a band at least 100 nm wide, preferably positioned between wavelengths from about 700 nm to about 2000 nm. The film is heat set to render the film capable of shrinking to conform without substantial wrinkling to a substrate having a compound curvature. The film may be laminated to form a wide variety of non-planar articles.