THREE-DIMENSIONAL PRINTING WITH VARIABLE DIELECTRIC PERMITTIVITY

Organization Name

hewlett-packard development company, l.p.

Inventor(s)

James William Stasiak of Corvallis OR (US)

Emre Hiro Discekici of San Diego CA (US)

Dennis J. Schissler of San Diego CA (US)

THREE-DIMENSIONAL PRINTING WITH VARIABLE DIELECTRIC PERMITTIVITY - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240247167 titled 'THREE-DIMENSIONAL PRINTING WITH VARIABLE DIELECTRIC PERMITTIVITY

The present disclosure describes methods of three-dimensional printing using polyamide particles and a fusing agent to create individually patterned object layers.

Individual build material layers of polyamide particles are iteratively applied.
A fusing agent, which may include water and a radiation absorber, is selectively applied onto the build material layers to form patterned object layers.
A pore-promoting agent can be selectively applied to create a pore-generating region in the object layers.
Electromagnetic energy is used to generate molten polymer from the polyamide particles in contact with the radiation absorber, forming a fused polymer body.
The fused polymer body without pores exhibits a certain dielectric permittivity, while the body with pores shows a decreased dielectric permittivity.

Potential Applications: - Additive manufacturing - Prototyping - Customized manufacturing processes

Problems Solved: - Enhanced control over object layer patterns - Improved structural integrity in 3D printed objects

Benefits: - Increased design flexibility - Higher quality finished products - Reduced material waste

Commercial Applications: Title: Advanced 3D Printing Technology for Customized Manufacturing This technology can be utilized in industries such as aerospace, automotive, and medical devices for rapid prototyping and customized part production.

Questions about 3D Printing with Polyamide Particles: 1. How does the use of a fusing agent improve the 3D printing process? The fusing agent helps in selectively bonding the polyamide particles to create intricate patterns in the object layers.

2. What are the advantages of incorporating a pore-promoting agent in the printing process? The pore-promoting agent allows for the creation of porous regions in the object layers, which can be beneficial for specific applications like filtration systems.

Original Abstract Submitted

the present disclosure provides methods of three-dimensional printing, including iteratively applying individual build material layers of polyamide particles and selectively applying a fusing agent onto the individual build material layers to form individually patterned object layers. the fusing agent can include water and a radiation absorber. the method can also include selectively applying a pore-promoting agent onto the individual build material layers at some or all of the individually pattered object layers to form a pore-generating region, and iteratively exposing the individual build material layers to electromagnetic energy to generate molten polymer from polyamide particles in contact with the radiation absorber that upon cooling forms fused polymer body. a material used to form the fused polymer body without pores can exhibit a material dielectric permittivity, and the fused polymer body at a location that includes the pores can exhibit a decreased dielectric permittivity.