Patents by Inventor Karl W. Kreckel
Karl W. Kreckel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20090145539Abstract: A removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150% with less than about 50% elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at least one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by simply stretching it in a direction substantially parallel, i.e., less than about 35°, to the surface of the substrate.Type: ApplicationFiled: February 17, 2009Publication date: June 11, 2009Inventors: Karl W. Kreckel, Patrick J. Hager, James H. Rickert
-
Publication number: 20030134112Abstract: A removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150% with less than about 50% elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at least one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by simply stretching it in a direction substantially parallel, i.e., less than about 35°, to the surface of the substrate.Type: ApplicationFiled: January 21, 2003Publication date: July 17, 2003Applicant: 3M Innovative Properties CompanyInventors: Karl W. Kreckel, Patrick J. Hager, James H. Rickert
-
Patent number: 6527900Abstract: A removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150% with less than about 50% elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at least one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by simply stretching it in a direction substantially parallel, i.e., less than about 35° C., to the surface of the substrate.Type: GrantFiled: November 23, 1999Date of Patent: March 4, 2003Assignee: 3M Innovative Properties CompanyInventors: Karl W. Kreckel, Patrick J. Hager, James H. Rickert
-
Patent number: 6458454Abstract: The present invention refers to a holding device which is attachable to a rigid surface comprising an exposed pressure-sensitive adhesive layer wherein the pressure sensitive adhesive is readily removable from the surface and is selected to exhibit a compliance of between 5×10−7 to 2×10−6 cm2/dyne, and a toughness of between 5×102 to 2×103 pounds/inch2 and to a corresponding pressure sensitive adhesive. The invention furthermore refers to a kit of parts comprising a holding means and a pressure-sensitive adhesive tape to be attached to said holding means said adhesive tape comprising at least one exposed pressure-sensitive adhesive layer according to claims of the inventions.Type: GrantFiled: April 6, 1999Date of Patent: October 1, 2002Assignee: 3M Innovative Properties CompanyInventor: Karl W. Kreckel
-
Patent number: 5989708Abstract: A removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150% with less than about 50% elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at least one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by simply stretching it in a direction substantially parallel, i.e., less than about 35.degree., to the surface of the substrate.Type: GrantFiled: April 8, 1997Date of Patent: November 23, 1999Assignee: 3M Innovative Properties CompanyInventor: Karl W. Kreckel
-
Patent number: 5747131Abstract: A process for bundling and/or fixing of articles using an extensible plastic tape having a Young modulus of at least approximately 170 bars but less than 7,000 bars and an extensibility in longitudinal direction of at least approximately 150%, with a recovery of less than 50 percent after extension, at least portions of the length of the plastic tape being free of pressure sensitive adhesive. In the process a) the plastic tape is permanently stretched, the permanently stretched tape is arranged around the articles to be bundled and/or fixated, and the ends of the tape are bound together; or b) the plastic tape is permanently stretched, one of its ends is then fixed, and thereafter the permanently stretched plastic tape is arranged around the articles to be bundled and/or fixated, and the other of its ends is fixed; and/or c) one of the ends of the plastic tape is fixed, the plastic tape is permanently stretched and arranged around the articles to be bundled and/or fixated, and the other of its ends is fixed.Type: GrantFiled: June 12, 1995Date of Patent: May 5, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Karl W. Kreckel
-
Patent number: 5672402Abstract: A removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150% with less than about 50% elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at least one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by simply stretching it in a direction substantially parallel, i.e. less than about 35.degree., to the surface of the substrate.Type: GrantFiled: June 7, 1995Date of Patent: September 30, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Karl W. Kreckel, Patrick J. Hager, James H. Rickert
-
Patent number: 5536778Abstract: A pressure-sensitive adhesive is obtainable by a process comprising polymerizingan ester of acrylic or methacrylic acid having a non-tertiary alcohol comprising 4 to 12 carbon atoms in the alkyl chain (component A) in the presence ofat least one kind of a naturally occuring polysaccharide except hydrolyzed starch, cellulose ethers and cellulose esters (component B),radical chain initiators (component C).The pressure sensitive articles manufactured from the pressure sensitive adhesive have improved properties. In particular, the articles are repositionable and the adhesion under humid conditions is improved when cellulose powder is used as component B.Type: GrantFiled: April 21, 1993Date of Patent: July 16, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Karl W. Kreckel, Andreas H. Graichen
-
Patent number: 5516581Abstract: A removable adhesive tape comprising a highly extensible and substantially inelastic backing and a layer of pressure-sensitive adhesive. The backing has a high tensile strength, has a lengthwise elongation at break of at least about 150% with less than about 50% elastic recovery after stretching. The adhesive can be a normally tacky and pressure-sensitive adhesive and is coated on at least one surface of the film backing. The adhesive is preferably highly extensible, does not separate from the backing during stretching, and has higher cohesion than adhesion to any suitable substrate. After being applied to a substrate, the adhesive tape of the present invention becomes firmly bonded, but can be easily removed without damaging the substrate by simply stretching it in a direction substantially parallel, i.e., less than about 35.degree., to the surface of the substrate.Type: GrantFiled: June 6, 1994Date of Patent: May 14, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Karl W. Kreckel, Patrick J. Hager, James H. Rickert
-
Patent number: 5496599Abstract: Means for unitizing objects, e.g., packages, through the use of a stretchable, detackifiable, pressure-sensitive adhesive tape. In the preferred embodiment, the tape comprises a highly extensible, substantially non-recoverable backing bearing on at least one major surface thereof a layer of pressure-sensitive adhesive. This tape has the dual capability of (1) being capable of being firmly bonded to a substrate and (2) being detackified after being stretched.Type: GrantFiled: April 11, 1994Date of Patent: March 5, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark E. Schwartz, Karl W. Kreckel
-
Patent number: 5314557Abstract: Means for unitizing objects, e.g., packages, through the use of a stretchable, detackifiable, pressure-sensitive adhesive tape. In the preferred embodiment, the tape comprises a highly extensible, substantially non-recoverable backing bearing on at least one major surface thereof a layer of pressure-sensitive adhesive. This tape has the dual capability of (1) being capable of being firmly bonded to a substrate and (2) being detackified after being stretched.Type: GrantFiled: July 28, 1993Date of Patent: May 24, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark E. Schwartz, Karl W. Kreckel
-
Patent number: 5244677Abstract: The invention deals with devices, in particular with bandage strips, for a transdermal delivery of drugs to patients, whereby the drug formulations include highly viscous preparations, topical solutions of a low viscosity and micro-emulsions of a low viscosity containing the drugs. Depending on the consistency of the medium containing the drug, the drug formulation is stored in a reservoir, consisting, e.g., of a punched out cavity or of an absorbent piece of material, which is encased or supported by a carrier element (a foamed material piece or a non-woven fleece tape) adhering to the skin by means of a skin-compatible adhesive, whereby specially formed protective films are applied at the filling and delivery side during the storage of the device to prevent a lateral migration, and whereby during its use, the device can be refilled with dosed amounts by the patient without requiring a removal of the device from the skin surface to be treated (FIG. 2).Type: GrantFiled: November 20, 1992Date of Patent: September 14, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Karl W. Kreckel, Horst-Georg Zerbe
-
Patent number: 4855170Abstract: Tape products for diverse end users are obtained by applying to a sheet backing a layer of normally tacky and pressure-sensitive adhesive (PSA) containing and completely surrounding resilient non-tacky hollow thermoplastic polymeric microspheres. When the PSA is permanently bonded to the backing and the exposed surface has an irregular contour, a removable and repositionable product results. When the PSA forms a continuous matrix that is strippably bonded to the backing and is 1 mm or more thick, the resultant product is a foamlike transfer tape or foam tape. Depending on the product, the PSA can contain from about 1/5 to about 2/3% of the microspheres by volume.Type: GrantFiled: August 13, 1987Date of Patent: August 8, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: Wayne K. Darvell, Patricia R. Konsti, Jurgen Klingen, Karl W. Kreckel