公开(公告)号：US20250135747A1

公开(公告)日：2025-05-01

申请号：US18690932

申请日：2022-09-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Stephen A. Johnson ,  William T. Fay ,  Atheen R. Johnson ,  Brian R. Peterson

IPC: B32B7/023 ,  B29D11/00 ,  B29K23/00 ,  B29K67/00 ,  B32B3/28 ,  B32B7/02 ,  B32B27/32 ,  B32B27/36

Abstract: A polymeric film has an orthogonal length, width and thickness. The polymeric film includes first and second substrates spaced apart along the thickness and a plurality of crumpled elements extending between the first and second substrates and along the length. The crumpled elements are substantially coextensive with the first and second substrates along the length and are spaced apart along the width.

公开(公告)号：US20250028103A1

公开(公告)日：2025-01-23

申请号：US18684773

申请日：2022-08-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Stephen A. Johnson ,  William T. Fay ,  Michael Benton Free ,  Atheen R. Johnson ,  Derek W. Patzman

IPC: G02B5/28

Abstract: A film includes a first layer having a substantially constant thickness. The first layer extends substantially uniformly along a length direction of the first layer and includes adjacent continuous first and second portions extending along the length direction. Each of the first and second portions includes a substantially constant thickness portion extending to an edge of the first layer along a width direction of the first layer, and a tapering portion adjacent the substantially constant thickness portion and having a thickness tapering in the width direction to a minimum thickness at an end of the tapering portion opposite the substantially constant thickness portion. The minimum thickness can be less than 20% of a thickness of the substantially constant thickness portion. The tapering portions of the first and second portions can have respective first and second major surfaces substantially conforming to one another.

公开(公告)号：US20240375337A1

公开(公告)日：2024-11-14

申请号：US18690968

申请日：2022-09-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Stephen A. Johnson ,  William T. Fay ,  Atheen R. Johnson

IPC: B29C48/23 ,  B29C48/00 ,  B29C48/21 ,  B29C59/00 ,  B29C59/02 ,  B29K23/00 ,  B29K67/00 ,  B29K96/04 ,  B29L7/00

Abstract: A polymeric film has an orthogonal length and width. The polymeric film includes a substrate and a plurality of fins extending away from the substrate and substantially coextensive with the substrate along the length. The fins are arranged across the width. Each fin in at least a majority of the fins includes a first portion extending from the substrate to a tip of the fin opposite the substrate; and a second portion extending from the tip of the fin toward or to the substrate. The second portion is attached to the first portion proximate the tip and separated from the first portion proximate the substrate along at least a portion of the length. The first and second portions have different respective first and second compositions.