公开(公告)号：US20190388670A1

公开(公告)日：2019-12-26

申请号：US16480810

申请日：2018-01-30

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Johannes DE BROUWER ,  Herwig JUSTER ,  Pieter Jan Antoon JANSSEN ,  Marco NEFS

IPC: A61M37/00 ,  B29C55/02 ,  B29C59/02

Abstract: A method of forming a microneedle array having alternating layers of material includes transforming a multilayer sheet by cutting, assembling and stretching steps to form a stretched, stacked multilayer sheet. The stretched, stacked multilayer sheet is cut, assembled and stretched to form a film, the film is heated, and at least a portion of the film is caused to be displaced into a plurality of recesses thereby forming a plurality of protrusions at a surface of the film.