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US 4,472,339 AGranted
Method of making a plastic cheese mold
AssigneeB.V. Hollandse Plastic Industrie Rotterdam
InventorsDirk C. H. van der Ploeg, Marinus H. Vellekoop, Hendrik Palte
Life of this patent
Estimating the term…
Abstract
A cheese mold of polyolefin material having a non-woven inner layer of polyolefin fibers which is heat welded to the mold surface is disclosed. A method for manufacturing the mold is also provided. A non-woven layer of fibers is provided and a liquid mass of plastic is heat sealed thereto by extrusion or injection molding.
Claims4
A process of manufacturing a plastic cheese mold, comprising:
- providing a mold having a cavity defined in it, which cavity is shaped to define the exterior wall of the container, and which mold is further comprised of a mandrel, or the like, fitted into the cavity, wherein the mold defines an outer, inwardly facing wall of the cavity and the mandrel, or the like, defines an opposite, inner, outwardly facing wall, and the mold and the mandrel, or the like, being shaped to define a relatively thin walled opening between the outer and opposite inner walls thereof;
- applying a porous non-woven layer of polyolefin fibers to the inner wall of the mold;
- and
- filling the cavity by injection moulding with a liquid mass of polyolefin material at an elevated temperature selected for the polyolefin material to heat seal to the fibers of the non-woven layer.
1 more element
A process of manufacturing a plastic cheese mold, comprising:
- providing a mold having a cavity defined in it, which cavity is shaped to define the exterior wall of the container, and which mold is further comprised of a mandrel, or the like, fitted into the cavity, wherein the mold defines an outer, inwardly facing wall of the cavity and the mandrel, or the like, defines an opposite, inner, outwardly facing wall, and the mold and the mandrel, or the like, being shaped to define a relatively thin walled opening between the outer and opposite inner walls thereof;
- applying a porous non-woven layer of polyolefin fibers to the inner wall of the mold;
- and
- filling the cavity by extrusion from a liquid mass of polyolefin material at an elevated temperature selected for the polyolefin material to heat seal to the fibers of the non-woven layer.
1 more element
Dependencies are inferred from the claim text.