Production of thermoplastic films
Patent 4038121 Issued on July 26, 1977. Estimated Expiration Date: 
July 26, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 26, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3733230 3749622 3854357 3896820 3925131 InventorsAssigneeApplicationNo. 05/622160 filed on 10/14/1975US Classes:156/157, Joining indefinite length laminae end-to-end156/244.19, After bonding; e.g., as finishing step, etc.156/250, With cutting, punching, tearing or severing242/555Splicing running material (i.e., flying splice)ExaminersPrimary: Powell, William A.Assistant: Lewris, Basil J. Attorney, Agent or FirmForeign Application Priority Data1974-10-24 UKAbstractThe invention is a method of automatically threading the wind-up section while the formation section runs at full speed. The stopped wind-up section is threaded with a leader while the formation section runs at full speed. The wind-up section is started. When speeds match the two webs are spliced, the leader is fed from its feed and the production web from waste so that the leader draws the production web through the wind-up section. The splicer may also act as an automatic dump.Field of SearchJoining indefinite length laminae end-to-endWith cutting of joining ends With cutting, punching, tearing or severing Moving web (flying splice or with web accumulating means) With scraper or adhesive applying means Means joining flexible indefinite length or endless bodies end-to-end (e.g., film, tape, belt splicers) | |
