Claims
- 1. A method of molding a first plastic member and simultaneously fusing of said first member a previously molded second plastic member, said method comprising the steps of: using core and cavity sides of a mold to mold said first plastic member, using core and variety side mold inserts which fit into respective ones of said core and cavity of said mold, placing said previously molded second plastic member into one of said mold inserts which are designed to a position said second plastic member relative to said mold when said mold and mold inserts are closed, said inserts being configured to permit molten plastic to flow around a limited portion of said second plastic member to be sued to said first plastic member, closing said mold sides and mold inserts and injecting plastic into said mold, and opening said mold and said inserts to eject said first plastic member to which said limited portion of said previously molded second plastic member has been fused.
- 2. A method as defined in claim 1 including the step or circulating water through said mold inserts to protect adjacent portion of said second plastic member which are not contacted by molted plastic during the molding operation.
- 3. A method as defined in claim 1 where said limited portion of said second plastic member comprises as relatively thick portion of said second member.
- 4. A method ad defined in claim 3 where said second plastic member includes a relatively thin section incapable of withstanding contact with said molted plastic, and said core and cavity side mold inserts being designed to engage against opposite sides of a portion of said thin section adjacent said relatively thick portion to pinch and seal off said thin section and prevent the same from being contacted by said molted plastic during a molding operation.
- 5. A method as defined in claim 1 where said first plastic member is a plastic lid for a bucket and said second plastic member comprise a pour spout for said lid.
- 6. A method as defined in claim 4 where said core and cavity sides of said mold and said core and cavity mold inserts are designed so when said mod side are closed in steel-to-steel contact said mold inserts will pinch against opposite sides of said thin section of said second plastic member with sufficient force to create a seal against flow of molted plastic but whit insufficient force to damage said thin section of said second plastic member.
- 7. A method of molding a first plastic member and simultaneously fusing to said first member a previously molded second plastic member, said method comprising steps of:
using core and cavity sides of a mold to mold said first plastic member, using core and cavity sides mold inserts with fit into respective ones of said core and cavity sides of said mold, placing said previously molded second plastic member into one of said mold inserts, said inserts being designed when closed to position second plastic member relative to said mold and are configured to permit molted plastic to flow around relatively thick portion of said second plastic member to be fused to said first plastic member while protecting other portions of said second plastic member from being contacted by molted plastic, closing said mold sides and mold inserts and injecting plastic into said mold, and opening said mold and said inserts to eject said first plastic member to which said relatively thick portion of said previously molded second plastic member has been fused.
- 8. A method of molding a plastic lid, and simultaneously fusing to said lid a previously mold plastic pour spout, said method comprising the steps of:
using core and cavity sides of a mold to mold said plastic lid, using core and cavity side mold inserts which fit into respective ones of said core and cavity sides of said mold, placing said previously molded pour spout into one of said mold inserts to position said pour spout relative to said mold when said mold and mold inserts are closed, said inserts being configured to permit molten plastic to flow around a relatively thick base portion of said pour spout to be fused to a lid wall while protecting other portions of said pour spout from being contacted by molten plastic, closing said mold sides and mold inserts and injection plastic into said mold, and opening said mold and said inserts to eject said plastic lid to which said relatively thick base portion of said pour spout is fused.
- 9. A method as defined in claim 8 where said relatively thick portion of said pour spout includes a relatively thick annular rim.
- 10. A method a defined in claim 9 where said relatively thick portion of said pour spout also includes an annular flange.
- 11. A method as defined in claim 8 where said other portions of said pour spout include a thin, flexible wall which permits of said pour spout to be moved between an collapsed position when not in use and extended position for pouring.
- 12. A method as defined in claim 8 where said core and cavity sides of said mold and said core an cavity mod inserts are designed so when said mold sides are closed in steel-to-steel contact, said mold inserts will pinch against opposite sides of said other portions of said pour spout adjacent said relatively thick base portion with sufficient force to create a seal against flow of molted plastic but with insufficient force to damage said other portions of said pour spout.
- 13. A plastic lid for sealing the open top of a plastic bucket, said lid having a plastic pour spout which is fused to said lid during the molding of said lid, said pour spout having a relatively thick base portion which is fused around its periphery to a surrounding lid wall during the molding of said lid.
- 14. A plastic lid as defined in claim 13 where said relatively thick base portion is the only portion of said pour spout which is fused to said lid, and other portions of said pour spout include a thin, flexible annular member which permits said pour spout to be moved between extended and collapsed positions.
- 15. A plastic lid as defined in claim 13 where said relatively thick base portion of said pour spout includes a relatively thick annular rim.
- 16. A plastic lid as defined in claim 15 where an annular flange is formed on the outside of said annular rim, said annular flange being substantially covered by plastic fusing the molding of said lid to fuse said annular flange to a surrounding wall of said lid.
- 17. A plastic lid as defined in claim 13 where said pour spout includes a thin, flexible annular portion said base portion, and a neck formed at integral with an outer end of said thin, flexible portion, said neck being movable between collapsed and extended position as permitted by said thin, flexible portion.
- 18. A plastic lid as defined in claim 17 where said base portion includes a relatively thick annular rim.
- 19. A plastic lid as defined in claim 18 where said rim has an annular flange extending around the outside thereof, said flange being substantially covered by plastic during the molding of said lid to fuse said annular flange to a surrounding wall of said lid.
- 20. A pour spout for sealing a pour opening formed by a surrounding wall of a portion of a plastic container comprising a plastic pour spout being fused in sealed relationship to the surrounding wall at a position with the pour opening, said pour spout having a base portion which is fused in direct bonded contact with the surrounding wall during the molding of the portion of the container as result of the container hardening during the molding process, said base portion being the only portion of said pour spout which is fused to the container.
- 21. The pouring spout as defined in claim 20 where said base portion is fused to said surrounding surface of the container during hardening of the container from a molten state during molding.
- 22. The pouring spout as defined in claim 20 wherein said portion of a plastic container is a lid.
- 23. The pouring spout as defined in claim 20 wherein said portion of a plastic container is on the body of the container.
- 24. A tamper proof pour spout assembly for sealing an opening formed by a surrounding wall of a portion of a plastic container comprising
A plastic pour spout having a pour opening and being affixed in sealed relationship to the surrounding wall of the container, A cap being affixed to said plastic pour spout covering said pour opening, and said cap being affixed to the container by at least one fused frangible element being directly bonded between said cap and said container while the container is being hardened during the molding process.
- 25. The tamper proof pour spout assembly according to claim 24 wherein said at least one fused frangible element comprises a plurality of spaced frangible webs.
- 26. The tamper proof pour spout assembly according to claim 24 wherein said portion of the container is the lid closure.
- 27. The tamper proof pour spout assembly according to claim 24 wherein said pour spout is further fused to the surrounding wall of the container during the molding process.
- 28. The tamper proof pour spout assembly according to claim 24 wherein said at least one frangible fused element is a circumferentially extending tear strip.
- 29. The tamper proof pour spout assembly according to claim 24 wherein said cap includes a plastic handle which facilitates removal said cap after removal of said at least one frangible elements.
- 30. The tamper proof spout assembly according to claim 27 wherein the surrounding surface is a lid closure.
Parent Case Info
[0001] This application is a divisional of my pending application, Ser. No. 09/304,391 filed May 4, 1999.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09304391 |
May 1999 |
US |
Child |
10034426 |
Dec 2001 |
US |