Plastic blank structure

Stock material or miscellaneous articles – Article of intermediate shape

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

428515, 428 88, B32B 904

Patent

active

044194129

ABSTRACT:
An article and a method are disclosed for substantially removing surfaces defects that are attendant with plastic blanks formed by cutting out squares from sheet stock material that are subsequently forged by means of non-melt, high pressure or solid-phase forming of preforms and thereafter thermoforming said preforms into containers. The blank itself comprises a tabular body having a pair of major faces located substantially parallel to one another, minor faces integrally formed and extending outwardly from said major faces, said minor faces presenting a smooth surface commensurate to that of said major faces, and a vertical portion integrally formed with said minor faces and defining an outer peripheral band or line having an unsmooth surface. A method of forming said plastic blank comprises providing a sheet of polymeric material, pressing lines of demarkation upon said sheet, severing said sheet within said lines to separate and cut said sheet into individual blank, whereby each blank is formed having a smooth surface provided by said pressing step and a rough surface provided by said severing step, thereafter forging said blank to a predetermined preform and reforming said preform to a container free of any imperfection.

REFERENCES:
patent: 3499188 (1970-03-01), Johnson
patent: 3532786 (1970-10-01), Coffman
patent: 3562383 (1971-02-01), Ayers et al.
patent: 4005967 (1977-02-01), Ayers et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Plastic blank structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plastic blank structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plastic blank structure will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2029978

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.