Method for forming a mold-release coating
AssigneePolymerit
InventorsBror H. Hanson, Douglas L. Hunter
Life of this patent
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Abstract
The method for forming a mold-release coating on a mold surface includes two basic steps: (a) providing a base coat of material on the mold surface and (b) electrostatically depositing a release powder onto the base coat of material. The base coat of material has a surface which is capable of accepting and retaining the release powder. Upon deposition of the release powder, the release powder embeds the base coat of material thereby forming a mold-release coating. The base coat may be a wax or a solvent base wax.
Claims16
A method for forming a mold-release coating on a mold surface, comprising:
- providing a base coat of material on the mold surface, the base coat of material having a surface which is capable of accepting and retaining a release powder;
- and
- electrostatically depositing a release powder onto the base coat of material, the release powder becoming at least partially embedded into the base coat of material upon deposition, thereby forming a mold-release coating.
A method for forming a mold-release coating on a mold surface, comprising:
- providing a base coat of wax on the mold surface, the base coat of wax having a surface which is capable of accepting and retaining a release powder;
- and
- electrostatically depositing a release powder onto the base coat of wax, the release powder consisting essentially of a base quantity of polytetrafluoroethylene powder, a chemically reactive component that enhances release properties and also opens a surface cell pattern on an object to be molded, and a surfactant to create a uniform surface on the object to be molded, the release powder becoming at least partially embedded into the base coat of wax upon deposition, thereby forming a mold-release coating.
A method for forming a mold-release coating on a mold surface, comprising:
- providing a base coat of solvent base wax on the mold surface, the base coat of solvent base wax having a surface which is capable of accepting and retaining a release powder;
- and
- electrostatically depositing a release powder onto the base coat of solvent base wax, the release powder comprising a base quantity of polytetrafluoroethylene powder, a chemically reactive component that enhances release properties and also opens a surface cell pattern on an object to be molded, and a surfactant to create a uniform surface on the object to be molded, the release powder becoming at least partially embedded into the base coat of solvent base wax upon deposition, thereby forming a mold-release coating.
Dependencies are inferred from the claim text.