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Mechanically stabilized gasket

IP.com Disclosure Number: IPCOM000033721D
Publication Date: 2004-Dec-23
Document File: 2 page(s) / 189K

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure proposes a two-layer structure. One layer is the gasket that can be an adhesive or non-adhesive gasket material. The second layer is a solid rigid or semi-rigid sheet that is adhesively attached to the gasket. After cutting the original part the second layer is added while the part is still on the fabrication stand. It is possible to optionally cut the top layer to provide alignment holes and/or to reduce the size of the top layer to be a little larger or the same shape as the original part. After placement of the part in an assembly process, the second layer is removed along with a release or carrier if it is part of the original gasket. A thin film adhesive is used for the manifold attachment and requires an adhesive patterning and mechanical stabilization process. The process and implementation are shown in the accompanying series of figures. A CO2 laser cutting is used to create the gasket. However, die cutting or other fabrication means could also be used. The formed part is particularly flexible because the narrow perimeter of adhesive used to seal the manifold is made from a flexible material (e.g. Rogers R1500 transfer adhesive).

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Mechanically stabilized gasket

Parts made with thin film materials having small fine features are difficult to handle and even more difficult to properly align on an intended surface during an assembly process. The problem is especially difficult because the part distorts within the plane of the thin film. An example is a gasket that seals multiple adjacent chambers in a solid ink printhead. Alignment of several narrow strips in the gasket is impossible if for a 250 mm long freestanding gasket with three open interiors separated by a 1mm wide strip running the length of the part.

This disclosure proposes a two-layer structure. One layer is the gasket that can be an adhesive or non-adhesive gasket material. The second layer is a solid rigid or semi-rigid sheet that is adhesively attached to the gasket. After cutting the original part the second layer is added while the part is still on the fabrication stand. It is possible to optionally cut the top layer to provide alignment holes and/or to reduce the size of the top layer to be a little larger or the same shape as the original part. After placement of the part in an assembly process, the second layer is removed along with a release or carrier if it is part of the original gasket. A thin film adhesive is used for the manifold attachment and requires an adhesive patterning and mechanical stabilization process. The process and implementation are shown in the accompanying series of figures. A CO2 laser cutting is used to create the gasket. However, die cutting or other fabrication means could also be used. The formed part is particularly flexible because the narrow perimeter of adh...