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Non-cling Spacer Sheet

IP.com Disclosure Number: IPCOM000060688D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

LoDato, VA: AUTHOR

Abstract

This article describes the design of a flat spacer pad used in the stacking of green ceramic sheets during the fabrication process for semiconductor circuits. The spacer pads are used to provide surface protection on both upper and lower faces of the ceramic sheets. The spacer dimensions are the same as the ceramic sheets to provide full surface protection during handling, storage and further process steps. These spacers are of different and inexpensive materials. When the surface of the contemporary spacer is smooth, electrostatic attraction forces develop which makes the separating of the stacked ceramic sheets from the spacers both difficult and unpredictable. This article applies an embossing technique to the spacer sheet 100 in a pattern 200 as shown in the Figure and 150 are holes in the paper for handling purposes.

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Non-cling Spacer Sheet

This article describes the design of a flat spacer pad used in the stacking of green ceramic sheets during the fabrication process for semiconductor circuits. The spacer pads are used to provide surface protection on both upper and lower faces of the ceramic sheets. The spacer dimensions are the same as the ceramic sheets to provide full surface protection during handling, storage and further process steps. These spacers are of different and inexpensive materials. When the surface of the contemporary spacer is smooth, electrostatic attraction forces develop which makes the separating of the stacked ceramic sheets from the spacers both difficult and unpredictable. This article applies an embossing technique to the spacer sheet 100 in a pattern 200 as shown in the Figure and 150 are holes in the paper for handling purposes.

The embossing reduces the amount of surface to surface contact area and provides a small distributed air space as well. This reduces the amount of electrostatic attraction forces. The embossing pattern is designed to provide maximum separating forces when the edges of the stack are impinged by an air jet in the separation process.

The application of this embossing technique to spacers used in flat sheet manufacturing processes improves the separation step and produces good repeatability which is important in automatic parts handling machinery. It also provides normal surface protection to the sheet stock.

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