Method and apparatus for making and/or decorating bowling...

B - Operations – Transporting – 44 – C

Patent

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Details

B44C 1/17 (2006.01) A63B 45/02 (2006.01) B41M 5/035 (2006.01) B44C 1/24 (2006.01) A63B 37/00 (2006.01) A63B 37/12 (2006.01)

Patent

CA 2469004

A method and apparatus for making and/or decorating bowling balls includes flexible transfer sheets (2,3) with heat-activated ink applied to portions thereof. A mold with opposite halves (70,71), which shift between open and closed positions, includes a cavity (73,74) sized to closely receive an article (11)therein. Transfer sheets (2,3) are positioned in the mold (70,71) with the article (11), such that when the mold (70,71) is closed, the same are captured in the mold cavity in an overlying relationship. Heat is applied to the mold (70,71) causing the article (11) to expand through thermal expansion, which expansion is resisted by the mold (70,71) to uniformly press the transfer sheets (2,3) against the underlying outer surface of the article (11), and also causing the heat-activated ink to transfer from the transfer sheets (2,3) to the outer surface of the article (11) to form the design thereon.

L'invention concerne un procédé et un dispositif pour la fabrication et/ou la décoration de boules de quilles, reposant sur l'utilisation de feuilles de transfert flexibles (2,3). On applique de l'encre à activation thermique sur certaines parties de ces feuilles. Un moule à deux moitiés opposées (70,71), qui passent d'une position fermée à une position ouverte et vice versa, comporte une cavité (73,74) pouvant recevoir un article (11) correspondant étroitement à la taille de la cavité. Les feuilles de transfert (2,3) sont placées dans le moule (70,71) avec l'article (11), de sorte que ces feuilles soient enfermées en superposition dans la cavité lorsque le moule (70,71) est fermé. On applique de la chaleur au moule (70,71), ce qui induit une expansion thermique de l'article (11), à laquelle résiste le moule (70,71) pour comprimer de façon uniforme les feuilles de transfert (2,3) contre la surface externe sous-jacente de l'article (11), et également pour assurer le transfert de l'encre à activation thermique depuis les feuilles de transfert (2,3) vers la surface externe de l'article (11), en vue de réaliser un dessin sur cette surface.

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