Browse Prior Art Database

Micro-Clean Work Station With Point-Of-Use Air Cleansing

IP.com Disclosure Number: IPCOM000040638D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Hecht, LC: AUTHOR [+4]

Abstract

Printed circuit boards are constructed by progressively laminating layers of copper and prepreg sheets together under conditions of heat and pressure in a lamination press. Prior to the lamination procedure, the individual sheets of copper and prepreg are interleaved at a layup station. Because any contaminants may cause circuit board defects, the layup station area must be maintained at minimum levels of all foreign matter. This is typically accomplished through the use of conventional clean room methods. However, contamination continues to be a concern as various fibers and debris from raw materials used to make the laminates are carried into the clean room environment via the operators' garments.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 94% of the total text.

Page 1 of 2

Micro-Clean Work Station With Point-Of-Use Air Cleansing

Printed circuit boards are constructed by progressively laminating layers of copper and prepreg sheets together under conditions of heat and pressure in a lamination press. Prior to the lamination procedure, the individual sheets of copper and prepreg are interleaved at a layup station. Because any contaminants may cause circuit board defects, the layup station area must be maintained at minimum levels of all foreign matter. This is typically accomplished through the use of conventional clean room methods. However, contamination continues to be a concern as various fibers and debris from raw materials used to make the laminates are carried into the clean room environment via the operators' garments. The use of a described lamination layup station incorporates controlled point-of-use multi-directional air cleaning currents to achieve minimum contamination levels.

(Image Omitted)

Air currents are forced through specific paths to carry airborne debris A (Fig. 1) away from critical laminate components and also to remove particulate contaminants B already residing on the component surfaces. The contaminants, once airborne, are removed from the clean room environment C by using conventional filtering techniques. Fig. 2 shows a top view of the multi-directional air cleaning layup station. The major advantage of this system is the capability to remove foreign matter that was deposited on component surfaces prior to...