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Hydraulic seal assembly for a thermoplastic material dispensing valve assembly

A thermoplastic material, hydraulic sealing technology, applied in the direction of engine sealing, engine components, devices for coating liquid on the surface, etc., can solve problems such as erosion of sealing mechanism and failure of sealing mechanism

Inactive Publication Date: 2014-04-23
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, it can be seen that each time the hard, rough mass reciprocates through the sealing mechanism during the above cycle of operation, it erodes the sealing mechanism and eventually causes the sealing mechanism to fail

Method used

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  • Hydraulic seal assembly for a thermoplastic material dispensing valve assembly
  • Hydraulic seal assembly for a thermoplastic material dispensing valve assembly
  • Hydraulic seal assembly for a thermoplastic material dispensing valve assembly

Examples

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Embodiment Construction

[0013] See attached drawings, especially Figure 1A and Figure 1B , the designation 100 is generally used to disclose and indicate the new and improved hot melt adhesive or other thermoplastic material dispensing valve assembly equipped with the new and improved sealing assembly according to the present invention and the principles of the present invention New and improved hot melt adhesive or other thermoplastic material dispensing valve assemblies constructed from and taught by. More specifically, during operations or cycles in which hot melt adhesives or other thermoplastic materials are applied or dispensed, as substrates or products pass under the dispensing valve assembly 100 along the product process line, the novel valve assembly 100 according to the present invention The improved dispensing valve assembly 100 can be used to dispense hot melt adhesives or other thermoplastic materials onto underlying substrates or products. It can be seen that the dispensing valve as...

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Abstract

A seal assembly, for use within a hot melt adhesive or other thermoplastic material dispensing valve assembly, comprises a sealing cartridge comprising a first primary seal, a secondary seal, and a viscous incompressible silicone grease disposed internally within the sealing cartridge. The viscous silicone grease effectively distributes the pressure forces such that internal pressure forces within the silicone grease are substantially equal to the external pressure forces of the hot melt adhesive whereby a pressure differential across the primary seal member is effectively eliminated thereby effectively eliminating the tendency for leakage of the hot melt adhesive or other thermoplastic materials.

Description

[0001] Cross references to related patent applications [0002] This application for patent relates to, is based upon, and is effectively converted from, U.S. Provisional Patent Application Serial No. 61 / 573,089 filed August 31, 2011, the filing of which is hereby required by this application daily beneficiary rights. technical field [0003] The present invention relates generally to sealing mechanisms, and more particularly to hydraulic sealing assemblies for use in hot melt adhesive or other thermoplastic material dispensing valve assemblies. Background technique [0004] In conventional liquid dispensing systems, such as those that dispense or discharge hot melt adhesives or other pad plastic materials, a dispensing valve assembly is commonly used that includes a reciprocable valve stem with a fixed setting A valve component thereon that is operatively associated with the valve seat so as to permit dispensing of hot melt adhesive or other thermoplastic material when the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/00F16J15/16F16J15/32F16J15/48
CPCF16J15/002F16J15/3236B05C5/027F16J15/48F16J15/162
Inventor 格兰特·麦古菲
Owner ILLINOIS TOOL WORKS INC
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