Method for manufacturing filter canisters and tracking quality assurance
View Patent ↗An assembly line for manufacturing filter canisters is disclosed. The method for assembling filter canisters provides a unique serial number for each canister and a database that associates the component lot numbers, activated charcoal weight, and quality assurance test results with the serial number for the filter canister. The manufacturing method can be adapted for assembly of canisters with activated charcoal and an aerosol HEPA filter, canisters with activated charcoal only, and canisters with an aerosol HEPA filter only. Some embodiments can also enable different testing conditions and specifications, activated charcoal loading requirements, labeling specifications, and packaging requirements.
1. A method for manufacturing filter canisters, comprising the steps of:
providing a canister having a body and a lid;
assigning a tracking marker to said canister body;
filling an amount of filtering agent in said body;
determining the amount of said filtering agent and associating said amount with said tracking marker;
assigning a unique identification to said canister and associating said tracking marker with said unique identification; and
recording said amount of filtering agent and unique identification in a retrievable database
wherein said database maintains product data for said canister according to its unique identification.
2. The manufacturing method according to claim 1 , further comprising:
performing testing on said canister; and
recording the results of said testing in said database associated with said unique identification.
3. The manufacturing method according to claim 2 , wherein said testing further comprises an airflow resistance test.
4. The manufacturing method according to claim 2 , wherein said testing further comprises a DOP test.
5. The manufacturing method according to claim 1 , further comprising:
after filling an amount of filtering agent in said body, placing a mechanical filter in said body.
6. The manufacturing method according to claim 5 , further comprising:
sealing said mechanical filter in said body.
7. The manufacturing method according to claim 6 , wherein said sealing process comprises:
using a sealant to fill the area around said mechanical filter to ensure that air cannot bypass said mechanical filter in the canister.
8. The manufacturing method according to claim 1 , further comprising:
affixing said lid to said body.
9. The manufacturing method according to claim 1 , further comprising:
labeling said canister according to NIOSH specification.
10. The manufacturing method according to claim 1 , further comprising:
recording in said database, lot numbers corresponding to component parts for said filter canister and associating said lot numbers with said tracking marker.