Plastic object for use in personal hygiene
AssigneeTrisa Holding AG
InventorsBeat Huber, Peter Waldispuhl
Life of this patent
Estimating the term…
Abstract
A unitary two component article for personal hygiene, such as a toothbrush, wherein the same is formed by injection molding of two differing plastic materials. The plastics do not adhesively or chemically bond to each other. The two differing plastic parts of the toothbrush are mechanically connected, such as by interfitting portions of the two plastic components or by shrinking one plastic component about the other.
Claims33
A method for producing an article used in personal hygiene having a treatment head, a handle and a neck part connecting the treatment head and the handle, the article having a proximal end and a distal end and a midpoint between the proximal and distal ends, the treatment head being disposed at the distal end, the proximal end being opposite to the distal end, and the article including at least two molded parts, the method comprising:
- forming at least part of the handle from a plastic material by injection molding a first molded part, the first molded part defining at least a portion of an exterior of the handle and at least a portion of the first molded part extends between the midpoint and adjacent to the end part at the proximal end of the article;
- subsequently forming the neck part as a second molded part from a plastic material by injection molding a plastic material into or around the first molded part, the second molded part defining a portion of an interior of the handle such that one of the first and second molded parts is at least partially enclosed by the other, the second molded part bearing the treatment head at the distal end of the article;
- and
- providing at least one of the first and second molded parts with at least one further part, of a different plastic material than the first and second molded parts and being formed of a thermoplastic elastomer.
A method for producing an article used in personal hygiene having a treatment head, a handle and a neck part connecting the treatment head and the handle, the article having a proximal end and a distal end and a midpoint between the proximal and distal ends, the treatment head being disposed at the distal end, the proximal end being opposite to the distal end, and the article including at least two molded parts, the method comprising:
- forming the neck part from a plastic material by injection molding a first molded part, the first molded part defining a portion of an interior of the handle, the first molded part bearing the treatment head at the distal end of the article;
- subsequently forming at least part of the handle as second molded part by injection molding a plastic material into or around the first molded part such that one of the first and second molded parts is at least partially enclosed by the other, the second molded part defining at least a portion of the exterior of the handle and at least a portion of the second molded part extends between the midpoint and adjacent to the end part at the proximal end of the article;
- and
- providing at least one of the first and second molded parts with at least one further part formed of a thermoplastic elastomer.
A method for producing an article used in personal hygiene having a treatment head, a handle and a neck part connecting the treatment head and the handle, the article having a proximal end and a distal end and a midpoint between the proximal and distal ends, the treatment head being disposed at the distal end, the proximal end being opposite to the distal end, and the article including at least two molded parts, the method comprising:
- forming the neck part from a plastic material by injection molding a first molded part, the first molded part defining a portion of an interior of the handle, the first molded part bearing the treatment head at the distal end of the article;
- subsequently forming at least part of the handle as second molded part by injection molding a plastic material into or around the first molded part such that one of the first and second molded parts is at least partially enclosed by the other, the second molded part defining at least a portion of the exterior of the handle and at least a portion of the second molded part extends between the midpoint and adjacent to the end part at the proximal end of the article;
- and
- providing at least one of the first and second molded parts with at least one further part formed of a thermoplastic elastomer.
Dependencies are inferred from the claim text.