US2020352798A1PendingUtilityA1

Formed films and apparatus for manufacturing the same

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Assignee: TREDEGAR FILM PRODUCTS LLCPriority: May 2, 2016Filed: Jul 27, 2020Published: Nov 12, 2020
Est. expiryMay 2, 2036(~9.8 yrs left)· nominal 20-yr term from priority
Inventors:Antonietta SplendianiBrian C. LoomisJohn Richard RennerTodd R. Skochdopole
B29C 2059/023B29C 59/06B29C 59/04B29C 59/022A61L 15/42A61F 13/514A61F 13/513A61F 13/5122A61F 13/5121A61F 13/512A61F 13/51108A61F 13/51104A61F 13/511A61F 13/49A61F 13/47A61F 13/15731A61F 13/15707A61F 13/15B29C 2791/006B29C 2791/007
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Claims

Abstract

An apparatus for manufacturing a formed film includes a first forming station configured to receive a polymer web and a second forming station configured to receive the polymer web from the first forming station after the polymer web has been apertured. The first forming station has a first forming structure with a plurality of first openings configured to form a plurality of apertures in the polymer web. The second forming station includes a second forming structure with a plurality of second openings and an overlying pattern configured to form raised areas in the polymer web to create a three-dimensional formed film.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . An apparatus for manufacturing a formed film, the apparatus comprising:
 a first forming station configured to receive a polymer web, the first forming station having a first forming structure comprising a plurality of first openings configured to form a plurality of apertures in the polymer web; and   a second forming station configured to receive the polymer web from the first forming station after the polymer web has been apertured, the second forming station comprising a second forming structure comprising a plurality of second openings and an overlying pattern configured to form raised areas in the polymer web to create a three-dimensional formed film.   
     
     
         2 . The apparatus according to  claim 1 , wherein the plurality of first openings are arranged in a  40  to  120  mesh pattern. 
     
     
         3 . The apparatus according to  claim 1 , wherein the plurality of second openings are arranged in a  40  mesh pattern. 
     
     
         4 . The apparatus according to  claim 1 , wherein the overlying pattern configured to form raised areas comprises a spiral pattern.

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