Applicator system

a technology of application system and actuator, which is applied in the field of application system, can solve the problems of affecting the operation of the application device, and becoming permanently clogged with reacting substances,

Inactive Publication Date: 2007-08-16
MCNEILUS TRUCK & MFG INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One serious drawback to such prior systems is that during and after use both the static mixing nozzle and the proportioning cartridge or valve contain residual amounts of combinations of the two-part reactants so that, depending on available open time, they must be immediately cleaned or they will become permanently clogged with reacted, hardened material.
The proportioning devices themselves are typically machined from metal blanks and are relatively expensive to replace and difficult to clean, but they must be thoroughly cleaned immediately after use to be used again.

Method used

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Examples

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Embodiment Construction

[0014] The detailed description found herein is directed to an example embodiment which discloses the principles of the present invention but is not intended to limit the scope of the inventive concept. Thus, an important aspect of the present invention resides in a proportioning cartridge or valve which can be used to continuously feed separate components for a multi-part curable system. Well known examples include a system for dispensing continuous beads of epoxy resins produced from epichlorohydrin and bisphenol A; and polyurethanes, usually produced by the reaction of a polyfunctional isocyanate combined with a hydroxyl-containing component. The mixing cartridge or valve is combined with and feeds a static mixing applicator nozzle in a manner such that combining of the components and mixing takes place only in the static mixing nozzle and not in the proportioning cartridge or valve. The combination of the mixing valve and a static mixing nozzle provides an applicator for dispens...

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Abstract

An applicator for combining and applying components of a multi-part curable system includes a proportioning valve having a body with a plurality of separate internal passageways, each communicating with a separate inlet recess and a separate outlet opening maintaining each component in separate condition in the valve. Each inlet recess is adapted to be connected to a source of one component of a multi-part curable system and the discharge openings discharge the two components separately from a common nose into an attached static mixing applicator nozzle.

Description

BACKGROUND OF THE INVENTION [0001] I. Field of the Invention [0002] The present invention relates generally to an applicator system which combines a proportioning cartridge or valve with a static mixer nozzle to produce a dispensing applicator for the mixture which generally consists of a combination of viscous liquids which cure upon mixing such as found in epoxy or polyurethane materials. More particularly, the invention relates to such a system in which the components of the two-part mixture are maintained in a separate condition in a proportioning valve prior to mixing thereof in a disposable static mixing nozzle. The disposable mixing nozzle is attached as part of an applicator system. [0003] II. Related Art [0004] It is known to provide mixing nozzles for use with dispenser systems to mix components and dispense two-part reactive adhesive or coating materials using a proportioning valve system in conjunction with a static mixing nozzle which also may serve as a dispensing nozz...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D88/64
CPCB05B7/0408B05C17/00553B05C17/00516B05B7/12
Inventor SCHRAFEL, TRACY L.
Owner MCNEILUS TRUCK & MFG INC
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