公开(公告)号：US12145344B2

公开(公告)日：2024-11-19

申请号：US17754753

申请日：2020-11-11

Applicant: Dow Global Technologies LLC

Inventor： Karlheinz Hausmann ,  Justice Alaboson ,  Jian Wang ,  Brayden E. Glad ,  Ronald Wevers ,  Sanjib Biswas ,  Andrew T. Heitsch ,  Mridula Kapur ,  Didem Oner-Deliormanli ,  Joshua B. Gaubert ,  Alexander Williamson ,  Mehmet Demirors

IPC: B32B27/08 ,  B32B27/30 ,  B32B27/32 ,  B32B27/34

Abstract: The present invention relates to oriented, multilayer polyethylene films. In one aspect, a biaxially oriented, multilayer polyethylene film comprises at least one layer comprising: (1) a polyethylene-based composition that comprises: (a) at least 97% by weight, based on the total weight of the polyethylene-based composition, of a polyethylene composition comprising: (i) from 25 to 37 percent by weight of a first polyethylene fraction having a density in the range of 0.935 to 0.947 g/cm3 and a melt index (I2) of less than 0.1 g/10 minutes; and (ii) from 63 to 75 percent by weight of a second polyethylene fraction; and (b) 20 to 5000 ppm, based on the total weight of the polyethylene-based composition of a nucleating agent, wherein the nucleating agent comprises a calcium salt of 1,2-cyclohexanedicarboxylic acid or sodium 4-[(4-chlorobenzoyl) amino] benzoate; wherein the polyethylene composition has less than 0.10 branches per 1,000 carbon atoms when measured using 13C NMR, wherein the density of the polyethylene-based composition is at least 0.965 g/cm3, and wherein the melt index (I2) of the polyethylene-based composition is 0.5 to 10 g/10 minutes.

公开(公告)号：US20180094127A1

公开(公告)日：2018-04-05

申请号：US15282108

申请日：2016-09-30

Applicant: Dow Global Technologies LLC

Inventor： Justice Alaboson ,  Caroline Woelfle-Gupta ,  Rashi Tiwari ,  Jon W. Hobson ,  Lawrence J. Effler, JR. ,  Cristina Serrat ,  Alexander Williamson ,  Viraj Shah

IPC: C08L23/08 ,  B29C47/00 ,  B29C63/04

CPC classification number: C08L23/0815 ,  B29C48/0018 ,  B29C48/0021 ,  B29C48/08 ,  B29C55/005 ,  B29C55/02 ,  B29C63/0017 ,  B29C63/02 ,  B29C63/04 ,  B29K2023/06 ,  B29K2105/16 ,  B29K2995/0046 ,  B29L2009/00 ,  C08L2205/03 ,  C08L2205/18

Abstract: The present disclosure relates to a method of promoting optimal stretching of stretch film during a wrapping operation, which method comprises at least the following steps. First a resin suitable for making stretch films is selected. Then a dispersed agent is selected, preferably one which has a refractive index similar to the selected resin such that when a film is made comprising the resin and the dispersed agent, the film will appear somewhat clear. The dispersed agent is then mixed with the resin and a film is formed from the resin containing the dispersed agent. Finally, a load is manually wrapped using such film, wherein during wrapping, the film is stretched to a level where the film becomes more opaque.

公开(公告)号：US20220288906A1

公开(公告)日：2022-09-15

申请号：US17632604

申请日：2020-08-04

Applicant: Dow Global Technologies LLC

Inventor： Justice Alaboson ,  Sanjib Biswas ,  Joshua B. Gaubert ,  Douglas S. Ginger ,  Vivek Kalihari ,  Mridula Kapur ,  Lori L. Kardos ,  Nicolas Cardoso Mazzola ,  Francis O. Olajide, JR. ,  Didem Oner-Dellormanli ,  Jose Eduardo Ruiz

IPC: B32B27/32 ,  B32B27/08 ,  C08L23/06

Abstract: Embodiments of the present disclosure are directed to multilayer films. Embodiments of the multilayer films may include a first layer comprising a polyethylene composition having a density of 0.924 g/cm3 to 0.936 g/cm3 and a melt index (I2) of 0.25 g/10 minutes to 2.0 g/10 minutes, a second layer comprising a first polyolefin, a third layer comprising a second polyolefin. The first layer may be positioned between the second layer and the third layer. The first polyolefin and the second polyolefin may be the same or different.

公开(公告)号：US11441013B2

公开(公告)日：2022-09-13

申请号：US16967464

申请日：2019-03-13

Applicant: Dow Global Technologies LLC

Inventor： Justice Alaboson

IPC: C08K5/353 ,  B29C48/00 ,  B29C48/10 ,  B29C48/21 ,  B29B7/88 ,  B32B27/08 ,  B32B27/20 ,  B32B27/32 ,  B29K105/00 ,  B29L31/00

Abstract: The present disclosure relates a method to adjust the amount of elongation required to effect a color change in a polymer stretch film. A first aspect of the invention is a method which method comprises selecting a polyolefin resin having a given density; admixing a given amount of the AIE mechanochromic dye into a melt of the polyolefin resin; making a film of a desired thickness from the polyolefin resin containing the mechanochromic dye; determining the level of elongation needed to effect a color change in the resulting film; and adjusting the density of the polyolefin resin to change the level of elongation needed to effect the color change to the desired level.

公开(公告)号：US20220274383A1

公开(公告)日：2022-09-01

申请号：US17597914

申请日：2020-06-29

Applicant: Dow Global Technologies LLC

Inventor： Justice Alaboson ,  Vivek Kalihari

IPC: B32B27/08 ,  B32B7/02 ,  B32B27/32 ,  B32B27/28 ,  B32B1/00 ,  B65D65/40

Abstract: Embodiments of the present invention relate to multilayer films, bags, and other articles. In one aspect, a multilayer film comprises a first skin layer having an overall density of less than or equal to 0.912 g/cm3; a second skin layer having an overall density of less than or equal to 0.912 g/cm3; and a core positioned between the skin layers, wherein the core has an overall density that is at least 0.01 g/cm3 greater than then overall density of the first skin layer, wherein the overall density of the multilayer film is from 0.905 to 0.930 g/cm3, wherein the film has a bending stiffness of 1.35 mN·mm or less when the film has a thickness of 2 mils (50.8 microns), wherein the film exhibits a Gelbo flex crack performance of 2 pinholes or less in 20,000 cycles, and wherein the film comprises at least 95% by weight polyethylene based on the total weight of the film.

公开(公告)号：US20190292396A1

公开(公告)日：2019-09-26

申请号：US16349474

申请日：2017-11-10

Applicant: Dow Global Technologies LLC

Inventor： Justice Alaboson ,  Jaclyn Murphy ,  Yuanqiao Rao ,  Cristina Serrat

IPC: C09D123/06 ,  C08F110/02 ,  C09D5/00 ,  B05D3/04 ,  B05D7/26

Abstract: Conventional atomic layer deposition technology is modified to increase its cost-effective viability for use in producing thinly coated flexible packaging film. In one embodiment a thinly coated flexible substrate, e.g., a polyolefin film, is made by a process comprising the steps of: (A) Dissolving a self-limiting precursor in a solvent to form a solution of dissolved self-limiting precursor in the solvent, (B) Applying the solution to a facial surface of a flexible polymer film so that at least a portion of the dissolved self-limiting precursor attaches to the facial surface of the film and the solution is at least partially depleted of self-limiting precursor, and (C) Curing the attached self-limiting precursor by contact with oxygen