초록

The present invention relates to a process for blowing an article with at least one recess.

대표청구항 ▼

1. A process for the manufacture of a blow molded article comprising an integral neck portion (603) and at least one recess proximal thereto, the process comprising the steps of: (i) Blowing an article (601) in a mold cavity (602), forming an integral neck portion (603) and at least one recess proxi

1. A process for the manufacture of a blow molded article comprising an integral neck portion (603) and at least one recess proximal thereto, the process comprising the steps of: (i) Blowing an article (601) in a mold cavity (602), forming an integral neck portion (603) and at least one recess proximal thereto;(ii) Opening the mold (605) via a first displacement of at least one first portion (606) of the mold (605) proximal to the neck portion (603), and a subsequent at least second displacement of at least two segments (616, 617) of a second portion (607) of the mold (605) wherein said first and second displacements are about a first and second plane and further wherein said first and second planes are perpendicular relative to each other; wherein said mold (605) comprises at least two parting lines (613) forming an angle of greater than about 10° at the point of intersection and wherein said at least two parting lines (613) are perpendicular to each other and wherein said mold (605) comprises at least one third parting line (614) dividing said at least one first portion (606) of the mold (605) into at least one right first portion (609) and at least one left first portion (610); and(iii) Ejecting the finished article (601). 2. A process according to claim 1 wherein said first portion (606) of the mold (605) is integral with a blow nozzle. 3. A process according to claim 1 wherein the mold (605) is opened via the steps of: (a) The first displacement of said at least one right first portion (609) and a substantially simultaneous displacement of said at least one left first portion (610);(b) The subsequent at least second displacement of said at least two segments (616, 617); and wherein, said first displacement of said at least one right first portion (609) is at an angle “g” of less than about −10°, taken from the z-axis, and wherein said substantially simultaneous displacement of said at least one left first portion (610) is at an angle “g1” of greater than about 10°, taken from the z-axis. 4. A process according to claim 3 wherein during step (a) the article is subjected to a stress which is below the yield stress of the material thereof. 5. A process according to claim 3 wherein step (i) comprises the step of forming at least one closure retention mechanism (615) wherein the at least one closure retention mechanism (615) protrudes for a distance “a” of less than about 3 mm, from a proximal end to a distal end. 6. A process according to claim 1 wherein step (i) comprises the step of forming at least one closure retention mechanism (615) generating an additional undercut proximal to said neck portion (603).