Internal mix plural component system

A method of forming an article from a catalyzed resinous material, comprising:

• delivering a flow of resin to a spraying means, said resin being forced by resin fluid pressure to flow through a restricted venturi passageway portion within the spraying means;
• delivering a flow of catalyst to said spraying means, said catalyst being delivered by catalyst fluid pressure to an opening in the restricted passageway portion through which said resin flows;
• mixing the flow of catalyst into the flowing resin at said spraying means to create a flow of mixed resin and catalyst, said catalyst being mixed into the flowing resin without imposition of the resin fluid pressure on the catalyst at said opening whereby catalyst fluid pressure may be substantially reduced;
• delivering a flow of compressed air to said spraying means;
• forming the mixed resin and catalyst flow into a fan-like film with expanding edges extending from the spraying means;
• forcing the flow of compressed air to converge adjacent the fan-like film of mixed resin and catalyst and expand in a fan-like flow juxtaposed to said fan-like film of mixed resin and catalyst, said expanding flow of compressed air being concentrated adjacent the expanding edges of the fan-like film to provide assistance in the atomization of the expanding edges of the film and more uniform size particles of resin and catlayst;
• and
• directing the mixed resin and catalyst particles to an article-forming substrate where the resin and catalyst react to form an article.

Means for forming an article from a catalyzed, resinous material, comprising:

• a first source of resin;
• a second source of catalyst for said resin;
• spraying means comprising mixing means to mix said catalyst with said resin and an atomizer to direct a spray of mixed catalyst and resin at an article-forming substrate;
• resin delivery means to provide a flow of resin from said first source to said spraying means;
• catalyst delivery means to provide a flow of catalyst from said second source to said spraying means;
• and
• air delivery means to provide a flow of compressed air to said spraying means,
• said mixing means comprising a first passageway having a central portion of restricted diameter, an enlarged chamber downstream of the central portion, and an expanding portion between the central portion and enlarged chamber, and one or more second passageways opening into the central portion of the first passageway and a small rod extending across the restricted central portion of the first passageway, said first passageway being connected with the resin delivery means and said one or more second passageways being connected with said catalyst delivery means whereby the resin and catalyst are mixed in the mixing means,
• said atomizer comprising a liquid nozzle for forming the mixed and flowing resin and catalyst into a fan-like film with expanding edges extending from a liquid orifice, and an air nozzle forcing the flow of compressed air to converge at an elongated orifice and to expand in a fan-like flow and to assist in the formation of resin and catalyst particles and further mix the catalyst and resin.

An internal mix system for plural component materials, comprising:

• a first source of a first plural component material;
• a second source of a second plural component material reactive with said first plural component material;
• mixing means for mixing said second plural component material with said first plural component material, said mixing means including a first passageway having a central portion of restricted diameter, an enlarged chamber downstream of the central portion and an enlarging portion between the central portion and enlarged chamber, one or more second passageways opening into the central portion of the first passageway, and turbulence-inducing means adjacent the one or more pasageway openings of the central portion of the first passageway, said turbulence-inducing means comprising a small rod traversing the central portion of said first passageway;
• first delivery means to provide a flow of first plural component material from said first source to said first passageway of said mixing means;
• second delivery means to provide a flow of second plural component material from said second source to said one or more second passageways of said mixing means whereby said first and second plural component materials are mixed by the mixing means;
• and
• directing means for directing mixed first and second plural component materials from said system.

A method of internally mixing plural component materials for direction to and curing on a substrate, comprising:

• delivering a flow of a first plural component material to a mixing means, said first plural component material being forced by fluid pressure to flow through a restricted venturi passageway portion within the mixing means;
• delivering by fluid pressure a flow of a second plural component material that is reactive with said first plural component material to said mixing means, said second plural component being delivered to an opening in the restricted venturi passageway portion through which said first plural component material flows;
• mixing the flow of second plural component material into the flowing first plural component material with a turbulence-inducing means adjacent the restricted venturi passageway of said mixing means to create a flow of mixed first and second plural component materials, said second plural component material being mixed into the flowing first plural component material without imposition of the fluid pressure of the first plural component material on the second plural component material at said opening whereby the fluid pressure of the second plural component material may be substantially reduced;
• and
• directing the flow of mixed first and second plural component materials to a substrate where the mixed first and second plural component materials cure.