POLYMERIC MULTILAYER FILM AND METHODS TO MAKE THE SAME

Polymeric multilayer film having first and second generally opposed major surfaces, an array of openings extending between the first and second major surfaces, and a thickness greater than 125 micrometers, wherein there are at least 30 openings/mm2, and wherein the openings each have a series of are...

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Bibliographic Details
Main Authors ANTILA, GARTH V, FLANAGAN, STEVEN J, HANSEN, BRENT R, SLAMA, DAVID F
Format Patent
LanguageEnglish
French
Published 09.10.2014
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CUTTING
CUTTING-OUT
HAND CUTTING TOOLS
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
PERFORATING
PERFORMING OPERATIONS
PUNCHING
SEVERING
SEVERING BY MEANS OTHER THAN CUTTING
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
STAMPING-OUT
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:Polymeric multilayer film having first and second generally opposed major surfaces, an array of openings extending between the first and second major surfaces, and a thickness greater than 125 micrometers, wherein there are at least 30 openings/mm2, and wherein the openings each have a series of areas through the openings from the first and second major surfaces ranging from minimum to maximum areas, and wherein the minimum area is not at at least one of the major surfaces. Embodiments of polymeric multilayer film described herein are useful, for example, for filtration and acoustic absorption. L'invention porte sur un film multicouche polymère ayant des première et seconde surfaces principales généralement opposées, un ensemble d'ouvertures s'étendant entre les première et seconde surfaces principales et une épaisseur supérieure à 125 micromètres, la densité des ouvertures étant d'au moins 30 ouvertures/mm2 et les ouvertures ayant chacune une série de surfaces dans les ouvertures en allant de la première surface principale à la seconde surface principale, allant d'une surface minimale à une surface maximale, la surface minimale n'étant pas au niveau d'au moins l'une des surfaces principales. Des modes de réalisation de film multicouche polymère selon la présente invention sont utiles, par exemple, pour la filtration et l'absorption acoustique.
Bibliography:Application Number: WO2014US20295