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Special Ram for Mixing Thermal or Metallized Pastes

IP.com Disclosure Number: IPCOM000040663D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

DiPaolo, N: AUTHOR

Abstract

A modification to a mixer tool has been proposed to enable it to produce thermal paste or metallized pastes from a boron nitride/mineral oil formulation. The proposal suggests the addition of a special ram as an integral part of the mixer which would apply the necessary force to properly mix the ingredients. In order to achieve the consistency desired, a roller mill has previously been used to mix the ingredients. This is a time-consuming approach with limited capacity. It is proposed that the ingredients be mixed in a commercially available mixer. However, as it exists, such a mixer does not produce a paste with the consistency required.

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Special Ram for Mixing Thermal or Metallized Pastes

A modification to a mixer tool has been proposed to enable it to produce thermal paste or metallized pastes from a boron nitride/mineral oil formulation. The proposal suggests the addition of a special ram as an integral part of the mixer which would apply the necessary force to properly mix the ingredients. In order to achieve the consistency desired, a roller mill has previously been used to mix the ingredients. This is a time-consuming approach with limited capacity. It is proposed that the ingredients be mixed in a commercially available mixer. However, as it exists, such a mixer does not produce a paste with the consistency required.

(Image Omitted)

A special ram has been suggested to be incorporated into the mixer to generate the shear forces and compression necessary to mix the ingredients to the desired paste consistency. The ram may have either of the three configurations indicated in Fig. 1. The ram 1 (Fig. 2) would be an integral part of the mixing chamber 4 which is equipped with two rotors containing the impellers 5. Pressure applied to the ram would be transmitted to the ingredients after they are loaded into the mixing chamber. This will insure that the proper paste consistency is achieved as the mixer functions. The modification will decrease the mixing time and increase the capacity of the mixing step of the operation, thereby improving productivity.

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