Abstract: A hollow multi-layered container comprises: an outer layer including a label and an inner layer, which is injection molded. The label has a barrier material that impedes one or more substances that emanate from a product from penetrating through the label, and the label displays information related to the product. The inner layer and the barrier material of the outer layer are substantially coextensive. For a container having a sidewall and an inclined shoulder extending inward from the sidewall, the label includes a primary segment covering the sidewall of the container and a plurality of shoulder pads covering the shoulder in at least approximately contiguous alignment with adjacent said shoulder pads.

Abstract: A hollow injection-molded product has a sidewall that is formed in a mold cavity by injecting molding material. An interior surface of the sidewall includes at least one ridge that is shaped by a flow channel in the mold cavity. The flow channel directs the flow of the injected molding material in the mold cavity. The cross-sectional dimension of the ridge normal to the direction of flow of the molding material that is injected in the flow channel generally decreases in the direction of flow. A label is inserted into the mold cavity prior to injection of the molding material so that the label is on the exterior surface of the sidewall of the hollow product.

Abstract: A hollow injection-molded product has a sidewall that is formed in a mold cavity by injecting molding material. An interior surface of the sidewall includes at least one ridge that is shaped by a flow channel in the mold cavity. The flow channel directs the flow of the injected molding material in the mold cavity. The cross-sectional dimension of the ridge normal to the direction of flow of the molding material that is injected in the flow channel generally decreases in the direction of flow. A label is inserted into the mold cavity prior to injection of the molding material so that the label is on the exterior surface of the sidewall of the hollow product.

Abstract: A hollow multi-layered container comprises: an outer layer including a label and an inner layer, which is injection molded. The label has a barrier material that impedes one or more substances that emanate from a product from penetrating through the label, and the label displays information related to the product. The inner layer and the barrier material of the outer layer are substantially coextensive. For a container having a sidewall and an inclined shoulder extending inward from the sidewall, the label includes a primary segment covering the sidewall of the container and a plurality of shoulder pads covering the shoulder in at least approximately contiguous alignment with adjacent said shoulder pads.

Abstract: The dimensions of a portion of an injection molded hollow product formed in a mold cavity between a first cavity surface of a cavity section and a first core surface of a core section are adjusted by adjusting the position of the first cavity surface relative to the position of the first core surface so that the first cavity surface and the first core surface are in a selected relative position when the cavity section is combined with the core section and a protractible and retractable core part is protracted so that a cavity abutment mold part can be connected directly to the protracted core part and the cavity abutment mold part also can be connected indirectly to the protracted core part by a series consisting of abutting mold parts. This series includes a pair of abutting rotatable eccentric rings, which are rotated to adjust the relative positions of the first cavity surface and the first core surface.

Abstract: The dimensions of a portion of an injection molded hollow product formed in a mold cavity between a first cavity surface of a cavity section and a first core surface of a core section are adjusted by adjusting the position of the first cavity surface relative to the position of the first core surface so that the first cavity surface and the first core surface are in a selected relative position when the cavity section is combined with the core section and a protractible and retractable core part is protracted so that a cavity abutment mold part can be connected directly to the protracted core part and the cavity abutment mold part also can be connected indirectly to the protracted core part by a series consisting of abutting mold parts. This series includes a pair of abutting rotatable eccentric rings, which are rotated to adjust the relative positions of the first cavity surface and the first core surface.

Abstract: In a method of injection molding a plastic product having a base wall and a sidewall (24), wherein plastic injected into a base-wall section of the mold cavity is conducted through a flow guide (28) in the base-wall section and thence into a sidewall section (24) of the mold cavity, a portion of a base-wall section flow guide is shaped by partially opposing a row of successive recesses (33) in a first mold part with a series of successive recesses (34) in a second mold part, with the recesses in the first mold part being so staggered with respect to the recesses in the second mold part as to provide a chain of overlapping recesses that form a sequence of variable-opening throttles (30) having openings that can vary whenever the alignment between the first and second mold parts varies. The recesses (34) in the second mold part are more than the recesses (33) in the first mold part.

Abstract: A hollow plastic product with a substantially tubular section, two open ends and a thread at the outside of one end of the product is removed from a core mold part by closing the threaded end of the molded product and injecting compressed air into the molded product to loosen the molded product from the core mold part. The threaded end of the product is closed by attaching a threaded closure having a matching thread onto the threaded end of the molded product. A robotic arm is used to robotically attach the threaded closure onto the threaded end of the product. The threaded closure is a plastic cap that injection molded in the injection molding system in which the product is injection molded, with the caps being injection molded at the same average rate as the products are injection molded.

Abstract: During injection molding of a plastic product having a base wall and a sidewall, fluid plastic material is injected into a base-wall section of a mold cavity. The base-wall section of the mold cavity includes at least one flow guide that is defined by a first mold part, a second mold part, and a third mold part that is movable relative to the first and second mold parts to either decrease or increase the conduction of injected plastic material through the at least one flow guide. Conduction within the at-least-one flow guide is adjusted dynamically while the injected plastic material is being conducted into the sidewall section of the mold cavity by moving the movable third mold part in response to sensed variations in injection pressures in different portions of the sidewall section of the mold cavity.

Abstract: During injection molding of a plastic product having a base wall and a sidewall, alignment of the mold parts that shape the mold cavity is maintained by conducting injected plastic material through a sequence of variable-opening throttles in a base-wall-section flow guide of the mold cavity. The openings of the throttles vary in response to variations in the thickness of a region of the sidewall section into which injected plastic material is conducted from the base-wall-section flow guide so that upon an increase in the thickness of such region the openings of the throttles in the base-wall-section flow guide decrease and so that upon a decrease in the thickness of such region the openings of the throttles in the base-wall-section flow guide increase.

Abstract: A hollow plastic product with a substantially tubular section, two open ends and a thread at the outside of one end of the product is manufactured by injection molding a plastic product with a substantially tubular section, an open end, a closed end and a thread at the outside of the closed end. An inner core of the core mold part is retracted from within the end of the mold cavity in which the thread is formed so that when the molded product is removed from the cavity mold part, the neck is compressed to partially occupy the region vacated upon removal of the inner core, whereby the thread is removed without damaging the thread. Removal of the molded product from the core mold part is at least helped by injecting compressed air into the closed end of the product. The closed end is then opened.

Abstract: A hollow plastic product with a substantially tubular section, two open ends and a thread at the outside of one end of the product is removed from a core mold part by closing the threaded end of the molded product and injecting compressed air into the molded product to loosen the molded product from the core mold part. The threaded end of the product is closed by attaching a closure having a matching thread onto the threaded end.

Abstract: An injection-molded plastic container or closure has a sidewall extending from a base wall to a rim wall. An upper portion of a segment of the rim wall extends with both outward and inward directional components. A lower portion of the given segment extends with both downward and inward directional components; and at a given level of the lower portion, the given segment has an inner surface and an outer surface that each extend with downward and inward directional components. At the given level the inner surface and the outer surface of the lower portion are respectively formed by different mold components of one of the mold parts. Upon removal of the container or closure from the mold parts, the inner surface and the outer surface of the lower portion at the given level of the given segment are contemporaneously removed from one of the separated mold parts.

Abstract: Apparatus for adjusting relative positions of different machine components includes first and second eccentric rings. The first eccentric ring has a first edge disposed in slideable contact with a first component of a given machine, such as an adjustable base section of a cavity mold part. The second eccentric ring has a first edge disposed in slideable contact with a second component of the given machine, such as a stationary side section of the cavity mold part, and has a second edge disposed in slideable contact with a second edge of the first eccentric ring. The contact portions of each said edge are circumscribed by a respective circle. By rotating both eccentric rings the relative positions of the first and second machine components can be adjusted in accordance with desired two-dimensional coordinates.

Abstract: An interlockable element for a structure assembly set includes an at least partially planar body and a connector edge having associated therewith a first A-type and B-type connector pair disposed about a first axis of rotation and a second A-type and B-type connector pair disposed about a second axis of rotation. The first and second axes of rotation are disposed on opposing sides of a generally rectangular quadrilateral of a specified dimension. Each of one pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the A-type connectors and each of the other pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the B-type connectors; and the quadrilateral is generally disposed in a plane that is generally perpendicular to the plane of the body of the interlockable element.

Abstract: During injection molding of a plastic product having a base wall and a sidewall, alignment of the mold parts that shape the mold cavity is maintained by conducting injected plastic material through a sequence of variable-opening throttles in a base-wall-section flow guide of the mold cavity. The openings of the throttles vary in response to variations in the thickness of a region of the sidewall section into which injected plastic material is conducted from the base-wall-section flow guide so that upon an increase in the thickness of such region the openings of the throttles in the base-wall-section flow guide decrease and so that upon a decrease in the thickness of such region the openings of the throttles in the base-wall-section flow guide increase.

Abstract: An interlockable element for a structure assembly set includes an at least partially planar body and a connector edge having associated therewith a first A-type and B-type connector pair disposed about a first axis of rotation and a second A-type and B-type connector pair disposed about a second axis of rotation. The first and second axes of rotation are disposed on opposing sides of a generally rectangular quadrilateral of a specified dimension. Each of one pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the A-type connectors and each of the other pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the B-type connectors; and the quadrilateral is generally disposed in a plane that is generally perpendicular to the plane of the body of the interlockable element.

Abstract: An injection-molded plastic container or closure has a sidewall extending from a base wall to a rim wall. An upper portion of a segment of the rim wall extends with both outward and inward directional components. A lower portion of the given segment extends with both downward and inward directional components; and at a given level of the lower portion, the given segment has an inner surface and an outer surface that each extend with downward and inward directional components. At the given level the inner surface and the outer surface of the lower portion are respectively formed by different mold components of one of the mold parts. Upon removal of the container or closure from the mold parts, the inner surface and the outer surface of the lower portion at the given level of the given segment are contemporaneously removed from one of the separated mold parts.

Abstract: An interlockable element for a structure assembly set includes an at least partially planar body and a connector edge having associated therewith a first A-type and B-type connector pair disposed about a first axis of rotation and a second A-type and B-type connector pair disposed about a second axis of rotation. The first and second axes of rotation are disposed on opposing sides of a generally rectangular quadrilateral of a specified dimension. Each of one pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the A-type connectors and each of the other pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the B-type connectors; and the quadrilateral is generally disposed in a plane that is generally perpendicular to the plane of the body of the interlockable element. The A-type connectors are interlockable with the B-type connectors.

Abstract: An interlockable element for a structure assembly set includes an at least partially planar body and a connector edge having associated therewith a first A-type and B-type connector pair disposed about a first axis of rotation and a second A-type and B-type connector pair disposed about a second axis of rotation. The first and second axes of rotation are disposed on opposing sides of a generally rectangular quadrilateral of a specified dimension. Each of one pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the A-type connectors and each of the other pair of diagonally opposite vertices of the quadrilateral are situated internally to each of the B-type connectors; and the quadrilateral is generally disposed in a plane that is generally perpendicular to the plane of the body of the interlockable element. The A-type connectors are interlockable with the B-type connectors.