Method for making a graphic representation on polyolefin
AssigneeGrazioli S.p.A.
InventorVittorio Grazioli
Life of this patent
Estimating the term…
Abstract
A graphic representation is made on objects made of a polyolefin polymer by printing a graphic representation on a face of a first film made of a stretched polyolefin polymer, associating the first film with a second film having a lower melting point than that of the first film, in order to obtain a membrane formed by the associated first and second films containing the graphic representation between them. The membrane is transferred into an injection mold and a polyolefin polymer is injected into the mold for forming the object, thereby obtaining at least a partial melting of the second film so that the membrane forms one body with the object.
Claims14
A method of making an injection-molded object having a graphic representation thereon, comprising the steps of:
- (a) printing a graphic representation on a surface of a first film of a stretched polyolefin polymer;
- (b) bonding a second film having a melting point lower than said first film to said surface to form a membrane from said first and second films with said graphic representation between them;
- (c) applying said membrane to an injection-molding mold with said first film in contact therewith;
- and
- (d) injection molding a polyolefin polymer into said mold and against said second film, thereby partially melting said second film and bonding said membrane to the injection-molded polymer and forming said body with said graphic representation thereon and located thereon beneath said first film.
Dependencies are inferred from the claim text.