摘要:
A container can have a body with an integrally formed base attached to the body. The base includes a concave annular wall extending from the container sidewall to a standing surface, and an inner wall extending from the standing surface to a substantially flat inner annular wall. The inner annular wall is recessed in the base and is substantially perpendicular to the container sidewall. The inner annular wall includes a centrally located dimple. The dimple includes a plurality of spaced apart and radially extending indented ribs. One or more of the ribs extend radially into a brace that tapers to meet the inner annular wall.
摘要:
A container forming assembly and method includes receiving a parison within a cavity of a mold, enclosing the parison within the mold having a wall with a recess, inflating the parison in the mold to form a blow molded container where the blow molded container has a sidewall, a movable region formed at the recess, and a hinge circumscribing an interface between the sidewall and the movable region, and moving or repositioning the movable region toward an interior of the blow molded container about the hinge before filling. The movable region can form a deep-set grip. Further, multiple movable regions can be provided, each of which may form respective deep-set grips. The container shape can be symmetrical or asymmetrical.
摘要:
An improved blow molded plastic container having generally rounded sidewalls that are adapted for hot-fill applications has two adjacent sides and two pairs of controlled deflection panels, each pair reacting to vacuum pressure at differing rates of movement, whereby one pair inverts under vacuum pressure and the other pair remains available for increased squeezability or extreme vacuum extraction. The opposing sidewalls are symmetric relative to vacuum panel and rib shape and placement. The ribs and controlled deflection panels cooperate to retain container shape upon filling and cooling and also improves bumper denting resistance, decreases vacuum pressure within the container, and increases light weight capability.
摘要:
A compression molded preform for forming an invertible base hot-fill container, and systems and methods thereof. The preform includes a body with a first open end, a second closed end or end cap of hemispherical shape, and a sidewall extending between the first end and the second end. At least a portion of the second end is thinner than any portion of the sidewall. Further, the second end is gateless and has an inner surface that is substantially smooth along its entire area. The compression molded preform is blow molded to form a plastic container with an invertible or movable base. The invertible or movable base is responsive to, or can be moved based on, internal forces or pressure associated with processing the container with a filled product.
摘要:
A cam follower slide component used in an apparatus for extrusion blow molding polyethylene teraphthalate is disclosed. The cam follower slide component is designed to include disc springs positioned about a spindle that is in turn located along the slide direction of the cam follower. With the inclusion of disc springs, the cam follower slide is capable of absorbing certain excessive forces within the blow mold clamping linkage system that may develop during irregular blow mold process conditions. In a preferred embodiment, the cam follower slide component includes the ability to adjust the spring force of the disc springs to allow for a variation in allowable excess system linkage forces.
摘要:
A system for purging molten thermoplastic material from a molding apparatus. The purge system includes a blow mold apparatus, a purge diverter valve operably connected to the blow mold apparatus and including a channel, a closing member, a spacer having a conduit in communication with the channel, and a melt pipe. The system can be used to purge molten thermoplastic materials out from an upward extruding blow mold apparatus.
摘要:
A hot-fillable container that is cylindrical in shape. The container may have two ribs. A top rib is located in the top bumper and a bottom rib is located in the bottom bumper. Both the top and the bottom ribs have depth that is deep enough so that the container may withstand the hot-fill process and increase its top load ability.
摘要:
A machine (10) for blow molding containers (100). The machine (10) has a stationary flow head (26) located proximate a turntable (12) on which molds (16) are mounted. A dwell cam mechanism (110, 120, 132) on the turntable causes the molds to accelerate ahead of the turntable, stop under the flow head to receive a parison (31), then accelerate to catch up with the turntable. This sequence allows the turntable to rotate continuously. Blow pins (30) mounted on the turntable inject gas into the molds to blow mold the parison while traveling a first path (144). Paddles (142) grip the molded containers and travel a second path (146) radially outward from the first path. The containers blow-molded from the parisons at a first station (18) are retained on the turntable after the turntable completes one full revolution and again passes the first station.