Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1991-05-21
1993-07-27
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
249 59, 264318, 26432811, 264334, 425438, 425556, 425575, 425DIG58, B29C 4540, B29C 100
Patent
active
052308561
ABSTRACT:
In the injection molding of closure caps, the problem of demolding the safety-seal strip, which is suspended at an intended break line and is necessarily provided with undercuts, is encountered. Here a clearance must first be created at the lower outer surface of the safety-seal strip, and the safety-seal strip must then be stripped from the mold core together with the closure cap. As a practical method step, the invention proposes to bring about the release of the lower portion of the outer surface of the safety-seal strip by lowering a mold ring which is displaceable relative to the stripper plate.
REFERENCES:
patent: 3344942 (1967-10-01), Hedgewick
patent: 3584111 (1971-06-01), Allison
patent: 4496302 (1985-01-01), Brown
patent: 4552328 (1985-11-01), Dutt et al.
patent: 4570897 (1986-02-01), Von Holdt
patent: 4648834 (1987-03-01), Von Holdt
patent: 4741447 (1988-05-01), John
patent: 4751036 (1988-06-01), Barriac
patent: 4806301 (1989-02-01), Conti
patent: 4881892 (1989-11-01), Webster et al.
patent: 4933133 (1990-06-01), Brown et al.
patent: 4983346 (1991-01-01), Curliss et al.
patent: 5053182 (1991-10-01), Hedgewick
LandOfFree
Method for demolding a safety-seal strip of a closure cap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for demolding a safety-seal strip of a closure cap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for demolding a safety-seal strip of a closure cap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2340788