ROBERT L FLETCHER
Plumbers in Billerica, MA
License number
Massachusetts 18238
Expiration Date
May 1, 2006
Type
Journeyman Plumber
Address
Address
Billerica, MA 01821
Professional information
Machine For Forming Open Ended Cartons
US Patent:
4676860, Jun 30, 1987
Filed:
Jan 24, 1986
Appl. No.:
6/822149
Inventors:
Richard G. Lee - Boston MA
Robert T. Fletcher - Billerica MA
Robert T. Fletcher - Billerica MA
Assignee:
Econocorp, Inc. - Randolph MA
International Classification:
B31F 100
US Classification:
156443
Abstract:
A machine for forming open ended cartons from flat die cut blanks of flexible material. The machine includes a magazine adapted to contain a supply of the blanks, and first, second and third forming stations through which the blanks are successively shifted by automatically operable transfer mechanisms. The blanks are progressively folded as they progress through the forming stations. At a final stage in the forming process, adhesive is selectively applied to the undersides of exposed side flaps, and these side flaps are then folded to produce the desired end product. At various stages during the forming process, the partially erected blanks are supported both internally and externally in order to avoid deformation or collapsing of open ends, and to insure precise bending along fold lines.