Vapor-phase corrosion inhibitor product

Abstract

The present invention provides a corrosion inhibitor assembly or emission of vapor phase corrosion inhibitor compound inserted into a shipping/packaging container. The assembly has a pouch formed as an envelope of vapor porous surrounding sidewall defining an inner compartment of a fill material composed of an inert substrate with embedded corrosion-inhibitor emitting compounds. The substrate acts as a substantially inert carrier for the compounds, to avoid the need for friable solids or powders in the pouch, yet permit vapor flow of compounds though the sidewall to area outside the pouch.

1 . A corrosion inhibitor assembly for emission of vapor phase corrosion inhibitor compound inserted into a shipping or packaging container, comprising:
 an outer encasement envelope constructed of sheet stock having vapor porous properties for permitting vapor to pass into and out of the envelope, said envelope being sealed to form an inner chamber with at least a portion of said porous sheet stock configured to provide vapor passage from the chamber; and   a combination of a generally inert substrate material with embedded vapor phase corrosion inhibiting compound located within the chamber of the envelope.   
   
   
       2 . The assembly of  claim 1 , wherein said generally inert substrate material is plastic resin. 
   
   
       3 . The assembly of  claim 2  wherein said substrate material comprises pellets of plastic resin and wherein small particles of inhibitor compound are embedded into the plastic resin pellets. 
   
   
       4 . The assembly of  claim 3 , wherein the vapor phase inhibitor compound resides primarily on the outer surface of said pellets. 
   
   
       5 . The assembly of  claim 1 , wherein the substrate comprises cellulose. 
   
   
       6 . The assembly of  claim 1 , wherein the substrate comprises a body of fiberous material. 
   
   
       7 . The assembly of  claim 1 , wherein the corrosion inhibiting compound comprises a mixture of sodium nitrite, sodium benzoate, and benzotriazole. 
   
   
       8 . The assembly of  claim 7 , wherein the substrate comprises low density polyethylene resin. 
   
   
       9 . The assembly of  claim 2  or  7 , wherein the combination of substrate and corrosion inhibiting compound is in the form of polyethylene resin pellets configured for use in manufacturing plastic film. 
   
   
       10 . The assembly of  claim 2 , wherein the envelope contains approximately 3 grams of the resin substrate with the corrosion inhibiting compound. 
   
   
       11 . A corrosion inhibitor assembly for emission of vapor phase corrosion inhibiting compound, comprising:
 an outer encasement envelope constructed of vapor porous sheet stock configured to permit vapor to pass through the envelope; and   a mixture of substrate material and vapor phase corrosion inhibiting compound material residing inside said envelope, said corrosion inhibiting compound material being incorporated into said substrate such that said mixture is not readily frangible and said inhibiting compound material is configured to emit vapor phase corrosion inhibitor compounds while otherwise being generally inseparable from said substrate.   
   
   
       12 . The assembly of  claim 11 , wherein said substrate comprises polyethylene resin. 
   
   
       13 . The assembly of  claim 12  wherein said substrate material comprises pellets of plastic resin and wherein small particles of inhibitor compound are embedded into the plastic resin pellets. 
   
   
       14 . The assembly of  claim 11 , wherein the substrate comprises cellulose. 
   
   
       15 . The assembly of  claim 11 , wherein the substrate comprises a wool of fiberous material. 
   
   
       16 . The assembly of  claim 11 , wherein the corrosion inhibiting compound comprises a mixture of sodium nitrite, sodium benzoate, and benzotriazole. 
   
   
       17 . The assembly of  claim 11 , wherein said mixture comprises segments of polyethylene film with corrosion inhibiting compound incorporated into said film. 
   
   
       18 . The assembly of  claim 11 , wherein the substrate and compound mixture includes waste material from the manufacture of plastic sheet stock of corrosion inhibitor emitting film. 
   
   
       19 . The assembly of  claim 11 , wherein said substrate is selected form a group of materials comprising cellulose and polyolefin such as polyethylene, poly propylene, and polybutene. 
   
   
       20 . The assembly of  claim 11 , wherein the substrate and compound mixture comprises a molded body of resin material. 
   
   
       21 . A method of providing corrosion inhibiting compounds in the vapor of a packaging for a product, comprising:
 providing an encasement envelope constructed of vapor porous sheet stock and having at least one fill opening for receiving a fill material and configured to be sealed;   inserting the fill material into said envelope and subsequently sealing said envelope, the fill material comprising a mixture of substrate material and vapor phase corrosion inhibiting compound material incorporated into said substrate such that the mixture is not readily frangible into powder form, said envelope and fill material being configured for placement into a packaging container of a product for the vapor phase corrosion inhibitor being released in the interior environment of the container.   
   
   
       22 . The method of  claim 21  further comprising the step of forming a mixture of substrate and corrosion inhibiting compound material by mixing the compound material with a generally inert substrate. 
   
   
       23 . The method of  claim 22 , wherein said step of forming the mixture includes use of plastic resin for said substrate. 
   
   
       24 . The method of  claim 22 , wherein said step of forming the mixture includes use of cellulose for said substrate. 
   
   
       25 . The method of  claim 21  further comprising the steps of:
 forming an envelope of vapor porous sheet stock formed of synthetic material and, sealing said envelope by heat and pressure to mold a seal of said synthetic material.   
   
   
       26 . The method of  claim 21  wherein the step of inserting the fill material into the envelope is performed with the inclusion of one or more vapor phase inhibitor compound selected from the group consisting of: sodium nitrite, sodium benzoate, and benzotriazole. 
   
   
       27 . The method of  claim 26  wherein the step of inserting the fill material into the envelope is performed wherein the fill material includes a corrosion inhibiting compound material includes a formulation of at least 11 to 25% Sodium Nitrite, 7 to 15% sodium benzoate, and 2 to 6% benzotriazole. 
   
   
       28 . The method of  claim 21  wherein the step of providing an encasement envelope includes the step of creating a pouch of fabric formed of fibers selected from a group consisting of: polytetraflouroethylene, polyethylene, polyolefins, polyesters, or polyamides. 
   
   
       29 . The method of  claim 22  wherein the step of forming a mixture of substrate and corrosion inhibiting compound material by mixing the compound material with a generally inert substrate includes the steps of blending plastic resin with said corrosion inhibiting compound material and extruding the blended resin and compound mixture at an elevated temperature. 
   
   
       30 . The method of  claim 29  wherein the step of forming a mixture of substrate and compound material includes the step of extruding low density polyethylene resin. 
   
   
       31 . A pouch of vapor-phase corrosion inhibitor mixture for use as an added item in a packaging container with intended emission of vapor phase corrosion inhibiting compound into the packaging interior environment, comprising:
 a synthetic outer encasement envelope constructed of vapor porous sheet stock configured to permit vapor to pass through the envelope, said envelope containing a non-frangible and non-friable fill material made of a base medium hosting a corrosion inhibiting compound material that is configured to release vapor-phase corrosion inhibiting compound to the environment surrounding the envelope, wherein the fill material is in the form of a visible solid that is generally absent of visible powder and not readily crushed into a powdered form.   
   
   
       32 . The assembly of  claim 31 , wherein said base medium comprises at least one body of plastic resin. 
   
   
       33 . The assembly of  claim 32  wherein said base medium comprises pellets of low density polyethylene resin with embedded compound material therein. 
   
   
       34 . The assembly of  claim 31 , wherein the base medium comprises cellulose fiber. 
   
   
       35 . The assembly of  claim 31 , wherein the base medium comprises a compact body of cellulose fibers with an absorbed content of said inhibiting compound material. 
   
   
       36 . The assembly of  claim 31 , wherein the corrosion inhibiting compound comprises a mixture of sodium nitrite, sodium benzoate, and benzotriazole. 
   
   
       37 . The assembly of  claim 31 , wherein said compound and base medium mixture comprises ribbon segments of polyethylene film wherein the corrosion inhibiting compound material is incorporated into said film. 
   
   
       38 . The assembly of  claim 31 , wherein the mixture of base medium and compound material is formed of waste material from the manufacture of plastic sheet stock of corrosion inhibitor emitting film. 
   
   
       39 . The assembly of  claim 31 , wherein said base medium is selected form a group of materials consisting of: cellulose or a polyolefin such as polyethylene, polypropylene, and polybutene. 
   
   
       40 . The assembly of  claim 31 , wherein the mixture of base medium and compound material comprises resin pellets configured for use in the manufacture of extruded vapor-phase inhibitor emitting plastic film.