Paint roller and its production process
AssigneeSterkel GmbH Pinsel-und Frabrollerwerk
InventorGeorg Weihrauch
Life of this patent
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Abstract
The invention relates to a method for producing a paint roller having a roller body comprised of a synthetic foam with an inner recess for placement on a support arm. The invention is characterized in that the roller body is expanded in a molding tool. Towards this end, the expansion pressure is set such that a closed compact covering of the synthetic material, preferably a polyester polyurethane foam, is formed on the outer surface of the roller body and/or on the wall of the inner recess. The coating is at least partially opened or removed in a successive method step.
Claims21
A method for producing a paint roller having a roller body made from synthetic foam, the roller foam body having an inner cavity for mounting on a support arm, the method comprising the steps of:
- a) injecting a synthetic foam material into a mold cavity of a shaping tool such that said synthetic foam material first substantially expands after entry into said mold cavity;
- b) controlling at least one of processing parameters, a tool temperature, a foam density, a foaming pressure, and a cooling to form a closed compact skin of synthetic material on at least one of an outer surface and an inner cavity wall of the roller body;
- and
- c) at least one of removing and opening at least a portion of said skin on at least said outer surface following step b).
Dependencies are inferred from the claim text.