Granted Patent B1

US 7,150,624 · App. 09/578,810 · Granted Dec 19, 2006

Abstract

Claims (9)

1. An apparatus for in mold sealing of a bottle blow molded from a parison of thermoplastic resin, said apparatus comprising:

a pair of mold halves including surfaces that when closed define a cavity, first and second dome recesses, and a passageway connecting said first and second domes recesses; and

a sealing tool movably mounted to one of said mold halves and being moveable to extend into said passageway, said tool having a pair of spaced apart blades formed on a distal end thereof, in a retracted position of said tool said blades being substantially withdrawn from said passageway, in an extended position of said tool said blades extending partway across said passageway to a position compressing and penetrating into a portion of a parison to form a seal with molecular sealing therein.

2. An apparatus as claimed in claim 1 wherein each of said blades includes a tip, said tip having chamfered sides.

3. An apparatus as claimed in claim 2 wherein said tip includes a central flat land between said chamfered sides.

4. An apparatus as claimed in claim 1 wherein said blades are transversely oriented relative to said passageway.

5. An apparatus as claimed in claim 1 wherein said tool is in said extended position said tips of said blades are positioned only partway across said passageway.

6. An apparatus as claimed in claim 1 further comprising a first actuator for closing and opening said mold halves, a second actuator for extending and retracting said tools and means for inflating said parison.

7. An apparatus as claimed in claim 1 wherein said blades are spaced longitudinally apart along said passageway.

Assignments (28)