Preform neck crystallization method
AssigneeNissei Asb Machine Co., Ltd.
InventorYOICHI TSUCHIYA
Life of this patent
Estimating the term…
Abstract
A neck crystallization method includes inserting a core into the neck, heating the neck using a heater group disposed along a transfer direction while rotating the preform on its axis, and transferring the preform along the transfer direction in a state in which the core is inserted into the neck, and cooling the neck of the preform in a state in which the core is inserted into the neck. The heating of the neck includes a first step that drives first heaters positioned on the upstream side in the transfer direction at a first power, and a second step that drives second heaters positioned on the downstream side of the first heaters at a second power that is lower than the first power until the temperature of the neck reaches a crystallization temperature zone.
Claims8
-10. (canceled)
A wide-neck container that is made of a synthetic resin comprising:
- a neck;
- a body;
- and
- a bottom,
- wherein the wide-neck container is configured so that a top side of the neck is sealed by a cap that is fitted to the neck,
- wherein the neck includes:
- a neck tubular section;
- an engagement section that is formed to protrude outward from the neck tubular section, and engages the cap;
- and
- a flange that is formed to protrude outward from the neck tubular section at the top side, a protrusion height of the flange from the neck tubular section being smaller than that of the engagement section,
- wherein the top side of the neck includes a first top side formed by the neck tubular section, and a second top side formed by the flange that is the same height level with the first top side and increases an area of the top side of the neck,
- wherein the neck tubular section has a uniform thickness at an area immediately below the flange and an area where the engagement section is formed,
- wherein a thickness of the flange is smaller than that of the neck tubular section, and
- wherein the neck have been crystallized.
A wide-neck container that is made of a synthetic resin comprising:
- a neck;
- a body;
- and
- a bottom,
- the wide-neck container being configured so that a top side of the neck is sealed by a cap that is fitted to the neck,
- wherein the neck includes:
- a neck tubular section;
- an engagement section that is formed to protrude outward from the neck tubular section, and engages the cap;
- and
- a ring-shaped recess that is formed in the neck tubular section at a height position closer to the body than the engagement section.
Dependencies are inferred from the claim text.