Process and apparatus for making an injection molded vial
View Patent ↗A process for forming a vial consisting of a tube, an insert secured within the tube, and a cap secured to the tube, which includes injection molding of the insert, removing the insert from the injection molding machine and placing it over a pin on a moving pallet by use of a manipulator, injection molding of the tube by a separate injection molding machine and moving the injection molded tube to a position where it is placed over the insert on the moving pallet by use of a manipulator, wherein a cap for the tube is formed at a separate injection molding machine where the cap is secured to the tube, wherein the joined tube with insert and cap are moved to a cap closing station wherein, after closing of the cap onto the tube, the assembled vial is inspected, tested and packaged.
1. A process for forming a leak proof container comprising,
injection molding of an insert for the container after introduction of insert material into injection molding machine A,
removing the insert from injection molding machine A and placing it on a moving pallet by use of a manipulator,
injection molding of a tube of the container after introduction of tube material into injection molding machine B,
following formation of the tube in injection molding machine B, partially ejecting the tube from injection molding machine B,
removing the injection molded tube from injection molding machine B and moving that tube to the moving pallet by use of a manipulator,
securing the tube over the insert while on the moving pallet,
injection molding of a cap for the container after introduction of cap material into injection molding machine C,
removing the injection molded cap from injection molding machine C by use of a manipulator,
securing the cap onto the combination tube and insert,
closing the cap onto the tube to form the completed container, and
packaging the closed container.
2. The process of claim 1 wherein the composition of the insert comprises a desiccant material blended with a plastic material.
3. The process of claim 2 wherein the plastic material comprises a thermoplastic material selected from the group consisting of polyethylene and polypropylene.
4. The process of claim 2 wherein the desiccant material comprises a molecular sieve.
5. The process of claim 2 wherein the desiccant material and the plastic material used to form the insert are combined while present in injection molding machine A.
6. The process of claim 1 comprising a second moving pallet to assist in formation of the container.
7. The process of claim 1 wherein the manipulator comprises a robotic arm.
8. The process of claim 1 wherein following introduction of the insert onto a pin on the moving pallet, the moving pallet is moved to a second position wherein the tube is secured over the insert.
9. The process of claim 1 wherein the insert is introduced entirely within the tube on the moving pallet.
10. The process of claim 1 wherein following the insertion of the tube over the insert, the combined tube and insert is moved to a third location on the moving pallet.
11. The process of claim 1 wherein following securing of the tube over the insert, the moving pallet is moved to a new position where the cap is assembled with the tube and insert.
12. The process of claim 1 wherein following the formation of the cap in injection molding machine C, the cap is only partially removed from the injection molding machine C, and is removed from injection molding machine C only by use of a manipulator.
13. The process of claim 12 wherein the manipulator comprises a robotic arm that seizes the cap and transfers it to the moving pallet.
14. The process of claim 1 wherein the assembled cap with tube and insert is removed from the moving pallet and transferred to a cap closing station by means of a manipulator.
15. The process of claim 1 wherein after the closing of the cap onto the tube containing the insert, the closed container is tested for leakage.
16. The process of claim 1 wherein the moving pallet comprises a continually moving belt system, wherein the pallet rotates back to the beginning of the process after the tube with insert and cap is removed from the moving pallet.
17. The process of claim 1 wherein one or more of the injection molding machines contain multiple cavities for forming multiple components of multiple containers at the same time.
18. The process of claim 1 wherein the injection molding machine A forming the insert comprises an in mold compounder injection molding machine.