Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Polyurethane Foam with Glass Microbeads

IP.com Disclosure Number: IPCOM000078036D
Original Publication Date: 1972-Jul-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Jarvis, JL: AUTHOR [+3]

Abstract

The addition of glass microbeads of 0.002 - 0.017 inch diameter to polyurethane foam, during the mixing stage, affords consistently smoother and harder surfaces, more uniform core density, fire resistant properties and the elimination or air voids while using standard techniques and inexpensive soft tooling.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Polyurethane Foam with Glass Microbeads

The addition of glass microbeads of 0.002 - 0.017 inch diameter to polyurethane foam, during the mixing stage, affords consistently smoother and harder surfaces, more uniform core density, fire resistant properties and the elimination or air voids while using standard techniques and inexpensive soft tooling.

The resulting surface and the other listed properties (using 0.017 - 0.008 inch, 0.008 - 0.005 inch and 0.005 - 0.002 inch in diameter, respectively) are improved as the diameter of the glass beads used are kept in proportion to the size of the part molded. Thus, the smaller the part, the smaller the diameter of glass beads.

Ratios of 1.4:1, 2:1 and 3:1 parts of standard furniture foam (as made by Polymir Corporation, for example) to one part of glass beads by weight have distinct advantages. The smallest beads and the larger ratio provide the desirable fire retardant properties and at the same time, the cost of the mixture is reduced and tolerances stabilized.

1