公开(公告)号：WO2019060531A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/051932

申请日：2018-09-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

Inventor： KALIHARI, Vivek ,  LAI, Chuan-Yar ,  SPIEKERMANN, Erica ,  SERRAT, Cristina ,  BLACK, Marc S. ,  WOODMAN, Daniel S. ,  SCHUETTE, Chad V. ,  SONI, Piyush ,  WU, Xiaosong ,  HIMMELBERGER, Daniel W. ,  YADAV, Vinita

IPC: B65D33/20

Abstract: The present disclosure is directed to reclosable packages comprising a front wall, a rear wall, and a closure region proximate to an outer edge of the container opposite a bottom of the container. The closure region includes a plurality of seal regions forming a continuous seal between the front wall and the rear wall across a width of the package and at least one of the seal regions is nonlinear. The closure region further includes at least one unsealed region defined between the seal regions. In some reclosable packages, the application of an opening force proximate to the closure region is operable to break the continuous seal between the front wall and the rear wall across a width of the package. The seal geometry may be tuned to adjust the magnitude of opening force required.

公开(公告)号：WO2019060652A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/052108

申请日：2018-09-21

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

Inventor： KALIHARI, Vivek ,  LAI, Chuan-Yar ,  SPIEKERMANN, Erica ,  SERRAT, Cristina ,  BLACK, Marc S. ,  WOODMAN, Daniel S. ,  SCHUETTE, Chad V. ,  SONI, Piyush ,  WU, Xiaosong ,  HIMMELBERGER, Daniel W. ,  YADAV, Vinita ,  PEREIRA, Bruno Rufato

IPC: B65D33/20

Abstract: The present disclosure is directed to a reclosable package comprises a front wall, a rear wall, and an upper closure. At the upper closure, at least a portion of a surface of the rear wall is sealed to an exterior surface of the front wall at a first adhesion strength. According to embodiments, the application of a force greater than the first adhesion strength to the rear wall in a direction away from the front wall is operable to separate the portion of a surface of the rear wall from the exterior surface of the front wall. After, the return of the portion of the surface of the rear wall and an application of a force on the rear wall in the direction of the front wall is operable to reseal the portion of the interior surface of the rear wall to the exterior surface of the front wall.

公开(公告)号：WO2019060362A1

公开(公告)日：2019-03-28

申请号：PCT/US2018/051661

申请日：2018-09-19

Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  ROHM AND HAAS COMPANY

Inventor： WU, Xiaosong ,  LAI, Chuan-Yar ,  HIMMELBERGER, Daniel W. ,  KALIHARI, Vivek ,  SERRAT, Cristina ,  YADAV, Vinita

IPC: B32B27/32 ,  B65D33/20 ,  C08L53/02

Abstract: The present disclosure includes a composition that includes an ethylene/α-olefin random copolymer having density of 0.890 g/cm 3 or less, a melting point of 100℃ or less, and a melt index from 0.2 g/10 min to 8.0 g/10 min, a styrenic block copolymer comprising from 1 wt% to less than 50 wt% units of styrene, a tackifier, and an oil. The composition may exhibit an overall melt index of the composition of from 2 g/10 min to 15 g/10 min. The composition can be used as an adhesive in some embodiments. The present disclosure also includes multilayer films that include the composition, which may provide reclose functionality to the multilayer film. The multilayer films that include the composition may provide low initial opening force and improved reclose adhesion through multiple reclose cycles. The present disclosure also includes various types of reclosable packaging articles that include the multilayer films and adhesive compositions.