Extrusion/Dispensing Systems And Methods

a technology of extrusion and dispensing system, applied in the field of extrusion systems and methods, can solve the problems of inability to meet the demands of fuel cells at a cost, inability to produce such grid lines at a cost, and inability to meet the demands of conventional extrusion techniques

Inactive Publication Date: 2010-09-02
SOLARWORLD INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The system enables the production of high aspect-ratio structures with features as small as 100 nanometers at reduced costs, improving electrical power generation in solar cells and catalyst utilization in fuel cells by creating efficient, high-aspect-ratio grid lines and porous structures.

Problems solved by technology

In addition, fuel cells can be complex structures since they perform multiple functions including: conducting protons from the membrane to the reaction site; diffusing oxygen to the reaction site with a low partial pressure drop; conducting electrons from the porous electrode to the reaction site; carrying heat away from the reaction site; and withstanding a compressive mechanical load of about 100-200 PSI.
Conventional extrusion techniques cannot meet these demands at a cost demanded by the fuel cell industry.
Conventional extrusion techniques are not able to produce such grid lines at a cost demanded by the solar cell industry.

Method used

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  • Extrusion/Dispensing Systems And Methods
  • Extrusion/Dispensing Systems And Methods
  • Extrusion/Dispensing Systems And Methods

Examples

Experimental program
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Embodiment Construction

[0027]FIG. 1 illustrates an extrusion device 10 with an applicator 12 for concurrently applying two or more substantially similar and / or different materials (e.g., fluids, pastes, liquids, inks, etc.) on a substrate 14. The materials are applied through pushing and / or drawing techniques (e.g., hot and cold) in which the materials are pushed (e.g., squeezed, etc.) and / or drawn (e.g., via a vacuum, etc.) through the applicator 12 and out one or more dispensing openings 16 of the applicator 12. The materials are dispensed to create one or more variously shaped entities (e.g., continuous, multi-sectional, rectangular, triangular, irregular, etc.) on the substrate 14. Suitable entities include, but are not limited to, a bead, a point, a track, a pipe, a frame, a rail, a rod, a seal, a volume within a void, etc. The shape of the entity can be defined through at least one of the shapes of the one or more dispensing openings 16, the structure within the applicator 12 (e.g., channels), chara...

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Abstract

A device for extruding / dispensing materials on a substrate includes a housing with at least two channels formed to facilitate flow. The housing includes entrance ports for each of the channels for receiving different materials. The housing further includes an exit port for co-extruding the materials on the substrate to generate a relatively fine feature with a relatively high aspect ratio.

Description

CROSS REFERENCE TO RELATED PATENTS AND APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 11 / 282,882 (Docket No. 20040932-US-NP) filed on Nov. 17, 2005 and entitled “EXTRUSION / DISPENSING SYSTEMS AND METHODS”, and is related to co-pending U.S. patent application Ser. No. 11 / 282,829 (Docket No. 20040932Q-US-NP) filed on Nov. 17, 2005 and entitled “EXTRUSION / DISPENSING MULTIPLE MATERIALS TO FORM HIGH-ASPECT RATIO EXTRUDED STRUCTURES” (as amended).BACKGROUND[0002]The following generally relates to extrusion systems and methods. More particularly, it is directed to micro extrusion systems and methods for co-extruding multiple similar and / or dissimilar materials to form relatively fine structures with relatively high aspect ratios. However, other applications are also contemplated herein.[0003]With traditional extrusion a billet of material is pushed and / or drawn through a die to create a rod, rail, pipe, etc. Various applications leverage this capabi...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B29C47/04B29C48/07B29C48/21B29C48/30B29C48/305B29C48/71
CPCB29C47/0021B29C47/026B29C47/065B29C47/145B29C47/707Y10T428/24802B81C2900/02H01L31/022425H01L31/18Y02E10/50B29C47/705B81C1/00634B29C48/155B29C48/21B29C48/71B29C48/307B29C48/705B29C48/08B29C48/07B05D3/02B05D1/34
InventorFORK, DAVID K.HANTSCHEL, THOMAS
OwnerSOLARWORLD INNOVATIONS