Plastic bottle manufacture

Claim 1

An apparatus for blow molding a plastic container and trimming the moile therefrom while the container is within the confinement of the mold including a neck ring, a multipiece mold positioned adjacent to and in contact with said neck ring, said mold when in the closed position defining a blow mold cavity terminating at the end next to the neck ring with a tubular neck end cavity, a moile accommodating cavity interdisposed between the tubular neck end cavity and the blow mold cavity, said moile cavity extending, in part, a radial distance greater than the radial extent of said tubular neck end cavity, said multipiece mold comprising an outer section and an inner section said sections adapted to move relative to one another to sever the radially enlarged moile from the container in the area adjacent to the finish thereof.

Claim 2

An apparatus for blow molding a plastic container and trimming the moile therefrom while the container is within the confinement of the mold including a neck ring, a multipiece mold positioned adjacent to and in contact with said neck ring, said mold when in the closed position defining a blow mold cavity terminating at the end next to the neck ring with a tubular neck end cavity, a moile accommodating cavity interdisposed between the tubular neck end cavity and the blow mold cavity, said moile cavity extending, in part, a radial distance greater than the radial extent of said tubular neck end cavity, said multipiece mold comprising an outer section and an inner section said sections adapted to move relative to one another to sever the radially enlarged moile from the container in the area adjacent to the finish thereof.

Claim 3

An apparatus for blow molding a plastic container and trimming the moile therefrom while the container is contained within the confinement of the mold including a split neck ring, a multipiece mold positioned adjacent to and in contact with said neck ring, said mold adapted to separate for removal of said container, said mold when in the closed position, defining a blow mold cavity of the general configuration of a single container, said mold cavity terminating at the end next to the split neck ring with a tubular neck end cavity, a moile accommodating cavity interdisposed between the tubular neck end cavity and the blow mold cavity, said moile cavity extending, in part, a radial distance greater than the radial extent of said tubular neck end cavity, said multipiece mold comprising an outer section with an upstanding annular wall section, the inner surface of which is parallel to the longitudinal axis of the blow mold, an inner section in contact with the inner surface of said upstanding wall, said inner and outer sections adapted to move in the longitudinal of said blow mold cavity direction one with respect to the other, means attached to said outer section to control the relative motion of said sections, moile severing surfaces associated with said inner and outer sections of said mold that are adapted to sever the radially enlarged moile from the container in the area adjacent to the finish of the container.

Claim 4

An apparatus for blow molding a plastic container and trimming the moile therefrom while the container is contained within the confinement of the mold including a split neck ring, a multipiece mold positioned adjacent to and in contact with said neck ring, said mold adapted to separate for removal of said container, said mold when in the closed position, defining a blow mold cavity of the general configuration of a single container, said mold cavity terminating at the end next to the split neck ring with a tubular neck end cavity, a moile accommodating cavity interdisposed between the tubular neck end cavity and the blow mold cavity, said moile cavity extending, in part, a radial distance greater than the radial extent of said tubular neck end cavity, said multipiece mold comprising an outer section with an upstanding annular wall section, the inner surface of which is parallel to the longitudinal axis of the blow mold, an inner section in contact with the inner surface of said upstanding wall, said inner and outer sections adapted to move in the longitudinal of said blow mold cavity direction one with respect to the other, means attached to said outer section to control the relative motion of said sections, moile severing surfaces associated with said inner and outer sections of said mold that are adapted to sever the radially enlarged moile from the container in the area adjacent to the finish of the container.

Claim 5

An apparatus for blow molding a container having an upwardly extending neck, said apparatus comprising a split neck ring, coupled with a centrally located blow pin, which is adapted for expanding a downwardly extending parison having an open upper end, mold halves adapted for movement from opposite sides of said parison in which said mold halves close the parison at a location remote from said open upper end, said mold halves defining a mold cavity terminating at the upward end next to the split neck ring with a tubular neck end cavity, a moile accommodating cavity interdisposed between said tubular neck end cavity and the remainder of said mold cavity, said moile cavity defining an enlarged section that is of greater radial extent than the radial extent of said tubular neck end cavity, said enlarged section positioned contiguous to said tubular neck end, said mold halves each comprising an outer section for defining the major portion of the container cavity and an inner section for defining a major portion of the moile cavity, said sections attached to one another for relative motion with respect to each other, moile severing means associated with said sections to sever the moile through the portion thereof that occupies the cavity of greater radial extent.

Claim 6

An apparatus for blow molding a container having an upwardly extending neck, said apparatus comprising a split neck ring, coupled with a centrally located blow pin, which is adapted for expanding a downwardly extending parison having an open upper end, mold halves adapted for movement from opposite sides of said parison in which said mold halves close the parison at a location remote from said open upper end, said mold halves defining a mold cavity terminating at the upward end next to the split neck ring with a tubular neck end cavity, a moile accommodating cavity interdisposed between said tubular neck end cavity and the remainder of said mold cavity, said moile cavity defining an enlarged section that is of greater radial extent than the radial extent of said tubular neck end cavity, said enlarged section positioned contiguous to said tubular neck end, said mold halves each comprising an outer section for defining the major portion of the container cavity and an inner section for defining a major portion of the moile cavity, said sections attached to one another for relative motion with respect to each other, moile severing means associated with said sections to sever the moile through the portion thereof that occupies the cavity of greater radial extent.

Claim 8

An apparatus for blow molding a plurality of plastic containers including a pair of mold halves adapted to move into engagement and disengagement one with the other, said mold halves when in the engaged position defining a blow mold cavity for the in tandem production of a plurality of containers, a moile cavity of enlarged radial extent, as compared to the radial extent of the finish areas of said containers, positioned within said cavity, means for introducing a blowing medium through the wall of the moile for inflating said containers, said mold halves equipped to move with respect to each other to shear the moile from said containers.

Claim 9

An apparatus for blow molding a plurality of plastic containers including a pair of mold halves adapted to move into engagement and disengagement one with the other, said mold halves when in the engaged position defining a blow mold cavity for the in tandem production of a plurality of containers, a moile cavity of enlarged radial extent, as compared to the radial extent of the finish areas of said containers, positioned within said cavity, means for introducing a blowing medium through the wall of the moile for inflating said containers, said mold halves equipped to move with respect to each other to shear the moile from said containers.

Claim 10

An apparatus for blow molding a plurality of plastic containers including a pair of multipiece mold halves adapted to move into engagement and disengagement with one another, said mold halves when in the engaged position defining a blow mold cavity for the in tandem production of a pair of containers, said cavity being of such configuration that the finish areas of the containers are contiguous to each other, a radially enlarged cavity section interdisposed between the finish areas to accommodate a moile section, means for penetrating the plastic material so that a blowing medium can be introduced to the interior of the container, means associated with the mold halves for the removal of unwanted plastic material from the ends of the containers most remote from the finish areas, means for reducing the longitudinal extent of the mold cavity to sever the moile section that occupies the radially enlarged cavity section that is interdisposed between the finish areas of said containers.

Claim 11

An apparatus for blow molding a plurality of plastic containers including a pair of multipiece mold halves adapted to move into engagement and disengagement with one another, said mold halves when in the engaged position defining a blow mold cavity for the in tandem production of a pair of containers, said cavity being of such configuration that the finish areas of the containers are contiguous to each other, a radially enlarged cavity section interdisposed between the finish areas to accommodate a moile section, means for penetrating the plastic material so that a blowing medium can be introduced to the interior of the container, means associated with the mold halves for the removal of unwanted plastic material from the ends of the containers most remote from the finish areas, means for reducing the longitudinal extent of the mold cavity to sever the moile section that occupies the radially enlarged cavity section that is interdisposed between the finish areas of said containers.

Claim 12

An apparatus for blowing a plurality of plastic containers including a pair of multipiece mold halves adapted to move into engagement and disengagement one with the other, said mold halves when in the engaged position defining a blow mold cavity for the in tandem production of a pair of containers, each of said mold halves comprising an outer frame having an end wall and side walls attached thereto, a top plate attached to said end wall and side walls, a slide plate mounted for movement with respect to said end wall, an upper mold block, having a container cavity therein, attached to said slide plate, a lower mold block, having a container cavity therein, attached to said end and side walls, said mold blocks arranged in tandem and having a common longitudinal axis, said slide plate extending downwardly through an aperture between said lower mold block and said end and side walls, the lower extremity of said slide plate contacting the top surface of a bottom plate that is attached to said end wall for hinged movement, means for applying a downward force to said upper mold blocks to move them in a longitudinal direction with respect to said lower mold blocks means associated with said upper and lower mold blocks to shear a moile section interdisposed therebetween and means associated with the upper and lower extremities of said mold cavity blocks to hold the moile sections created by the closing action of said mold halves.

Claim 13

An apparatus for blowing a plurality of plastic containers including a pair of multipiece mold halves adapted to move into engagement and disengagement one with the other, said mold halves when in the engaged position defining a blow mold cavity for the in tandem production of a pair of containers, each of said mold halves comprising an outer frame having an end wall and side walls attached thereto, a top plate attached to said end wall and side walls, a slide plate mounted for movement with respect to said end wall, an upper mold block, having a container cavity therein, attached to said slide plate, a lower mold block, having a container cavity therein, attached to said end and side walls, said mold blocks arranged in tandem and having a common longitudinal axis, said slide plate extending downwardly through an aperture between said lower mold block and said end and side walls, the lower extremity of said slide plate contacting the top surface of a bottom plate that is attached to said end wall for hinged movement, means for applying a downward force to said upper mold blocks to move them in a longitudinal direction with respect to said lower mold blocks means associated with said upper and lower mold blocks to shear a moile section interdisposed therebetween and means associated with the upper and lower extremities of said mold cavity blocks to hold the moile sections created by the closing action of said mold halves.

Claim 15

An apparatus having a vertical longitudinal axis for blowing a plurality of plastic containers including a pair of multipiece mold halves adapted to move laterallY into engagement with a length of vertically extruded plastic tubing, said mold halves when in the engaged position defining a blow mold cavity that closes the top and bottom ends of said plastic tubing for the in tandem production of a pair of containers, each of said mold halves comprising an outer frame having an end wall and side walls attached thereto, a top plate attached to said end wall and sidewalls, a slide plate keyed with said end wall for movement in a longitudinal direction, an upper mold block attached to said slide plate, a lower mold block attached to said end wall, said mold blocks each having a container cavity therein for the in tandem formation of a container, said slide plate extending downwardly through an aperture between said lower mold block and said end and sidewalls, the lower extremity of said slide plate contacting the top surface of a bottom plate that is attached to said mold for hinged movement, means for applying a downward force to said upper mold blocks to move them in a longitudinal direction with respect to said lower mold blocks, the cavity in said upper mold blocks formed with a radially constricted section, at the lower end of the cavity, that conforms to the finish of the container, the cavity in said lower mold blocks formed with a radially constructed section at the upper end of the cavity, that conforms to the finish of the container produced therein, a radially enlarged cavity section formed at the juncture of the upper and lower molds for the formation of a moile section of greater radial extent than said constricted sections, shear rings associated with the lower and upper ends respectively of said upper and lower mold blocks for severing the moile from between the in tandem aligned containers, means associated with said top and bottom plates for grasping the tails produced by the closing action of the mold halves, and means for moving the upper mold blocks relative to the lower mold blocks to effect the shearing of the tails from said containers.

Claim 16

An apparatus having a vertical longitudinal axis for blowing a plurality of plastic containers including a pair of multipiece mold halves adapted to move laterallY into engagement with a length of vertically extruded plastic tubing, said mold halves when in the engaged position defining a blow mold cavity that closes the top and bottom ends of said plastic tubing for the in tandem production of a pair of containers, each of said mold halves comprising an outer frame having an end wall and side walls attached thereto, a top plate attached to said end wall and sidewalls, a slide plate keyed with said end wall for movement in a longitudinal direction, an upper mold block attached to said slide plate, a lower mold block attached to said end wall, said mold blocks each having a container cavity therein for the in tandem formation of a container, said slide plate extending downwardly through an aperture between said lower mold block and said end and sidewalls, the lower extremity of said slide plate contacting the top surface of a bottom plate that is attached to said mold for hinged movement, means for applying a downward force to said upper mold blocks to move them in a longitudinal direction with respect to said lower mold blocks, the cavity in said upper mold blocks formed with a radially constricted section, at the lower end of the cavity, that conforms to the finish of the container, the cavity in said lower mold blocks formed with a radially constructed section at the upper end of the cavity, that conforms to the finish of the container produced therein, a radially enlarged cavity section formed at the juncture of the upper and lower molds for the formation of a moile section of greater radial extent than said constricted sections, shear rings associated with the lower and upper ends respectively of said upper and lower mold blocks for severing the moile from between the in tandem aligned containers, means associated with said top and bottom plates for grasping the tails produced by the closing action of the mold halves, and means for moving the upper mold blocks relative to the lower mold blocks to effect the shearing of the tails from said containers.