3m Innovative Properties Company

Ross J DeVolder

Robert D Waid

Thomas Q Chastek

Jacob D Young

Joseph C Dingeldein

Mark E Napierala

Eric O Nyaribo

Jay Arthur Esch

Andrew Satrijo

Shujun J Wang

Shaun M West

Doreen Eckhardt

Yong Seok Seo

Mikhail A Belkin

Do-Kwang Cho

You Hoon Kim

Seongwoo Kim

The present disclosure provides a core-sheath filament. The core-sheath filament includes an adhesive core and a non-tacky sheath, wherein the sheath exhibits a melt flow index of less than 15 grams per 10 minutes. The present disclosure also provides a method of printing an adhesive. The method includes a) melting a core-sheath filament in a nozzle to form a molten composition, and b) dispensing the molten composition through the nozzle onto a substrate. Steps a) and b) are carried out one or more times to form a printed adhesive. The core-sheath filament includes an adhesive core and a non-tacky sheath. Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process using a core-sheath filament, the article including a printed adhesive based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article including a printed adhesive, using a core-sheath filament.

Core-sheath filaments and methods of printing an adhesive

Pressure-sensitive adhesive compositions and articles that include a layer of the pressure-sensitive adhesive compositions are provided. The pressure-sensitive adhesive compositions are particularly well suited for use with substrates that have been considered to have difficult to bond to surfaces such as those routinely encountered in the automotive industry. For example, the pressure-sensitive adhesive can be adhered to clear coat compositions, painted surfaces, and various polymeric materials having low energy surfaces (e.g., surfaces having a surface energy no greater than 35 dynes per centimeter).

Adhesive compositions and articles

Unified multilayer articles comprising alternating layers including: a) at least two elastomeric foam interior layers, which are interior layers of the unified multilayer article, and which comprise: i) a first elastomeric material, and distributed therein: ii) expanded polymeric microspheres; where the elastomeric foam interior layers alternate with: b) at least two alternate layers directly bound to adjacent elastomeric foam interior layers; and wherein at least one of the alternate layers is an interior layer of the unified multilayer article. Adhesive films comprising the unified multilayer articles of the present disclosure are also provided, which additionally comprises at least one pressure sensitive adhesive attachment layer, which is an outermost PSA layer directly bound to a first face of the unified multilayer article and available for attachment of the adhesive film to an adherend.

Multilayer PSA foam particles

The present invention relates to a double-sided adhesive tape used for applications including the attachment of front glass for mobile devices. A core layer of the double-sided adhesive tape is prepared by adding an acrylic elastomer free of carbon-carbon double bonds while being highly miscible with an acrylic resin to an acrylic monomer(s) and performing curing, and thus can improve the impact resistance of the final double-sided adhesive tape. Also, the core layer may take a form of foam due to the introduced filler such as glass bubbles or organic microspheres, and thus can further contribute to improving the impact resistance of the final double-sided adhesive tape.

Acrylic rubber foam and double-sided adhesive tape comprising same

Growing community of inventors

Woodbury, MN, United States of America

Ross J DeVolder