公开(公告)号：US20200048435A1

公开(公告)日：2020-02-13

申请号：US16388586

申请日：2019-04-18

Applicant: International Paper Company

Inventor： Robert T. Hamilton ,  Harshadkumar M. Shah ,  Jeffrey J. Cernohous ,  Neil R. Granlund ,  David E. Fish

IPC: C08L1/10 ,  C08L23/06 ,  C08L23/12 ,  C08L97/02 ,  C08L1/12 ,  C08L55/02 ,  C08L67/04 ,  C08L53/00 ,  C08L67/02 ,  C08L69/00 ,  C08L23/02 ,  C08J5/04

Abstract: A composition comprising 10 to 50 weight % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the composition has a brightness of at least 20 as measured by the Brightness Test. The wood pulp fiber can be bleached chemical wood pulp fiber. The brightness may be at least 30 as measured by the Brightness Test.

公开(公告)号：US20190084185A1

公开(公告)日：2019-03-21

申请号：US16192415

申请日：2018-11-15

Applicant: International Paper Company

Inventor： Robert T. Hamilton ,  Harshadkumar M. Shah ,  David E. Fish ,  Neil R. Granlund ,  Jeffrey J. Cernohous

IPC: B29B9/06 ,  B29C47/36 ,  B29B9/14 ,  B29C47/00 ,  B29B7/92 ,  B29C47/38 ,  B29B7/48 ,  B29B7/60

Abstract: A composition including 6 to 50 weight percent wood pulp fiber and 45 to 93.45 weight percent thermoplastic polymer. In some embodiments, the average dispersion of the wood pulp fibers within the thermoplastic polymer is equal to or greater than 90% as determined by the Dispersion Test. In some embodiments, the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679. In some embodiments, the composition further includes 0.5 to 5 weight percent of an additive, such as a compatibilizer, a coupling agent, an anti-oxidant, and/or a lubricant. In some embodiments, the wood pulp fiber is bleached chemical wood pulp fiber.

公开(公告)号：US20230331968A1

公开(公告)日：2023-10-19

申请号：US18057512

申请日：2022-11-21

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Robert T. Hamilton ,  Harshadkumar M. Shah ,  Jeffrey J. Cernohous ,  Neil R. Granlund ,  David E. Fish

IPC: C08L53/00 ,  C08L55/02 ,  C08L23/12 ,  C08J5/04 ,  C08L97/02

CPC classification number: C08L23/12 ,  C08J5/045 ,  C08L53/00 ,  C08L55/02 ,  C08L97/02 ,  C08L2205/16

Abstract: A composition comprising 10 to 50 wt% wood pulp fiber and 45 to 85 wt% thermoplastic polymer wherein the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679.

公开(公告)号：US20200216624A1

公开(公告)日：2020-07-09

申请号：US16818171

申请日：2020-03-13

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Robert T. Hamilton ,  Harshadkumar M. Shah ,  Jorge Cortes ,  Hugh West ,  Rob Banning

IPC: C08J5/04 ,  C08K7/14 ,  B29C45/00

Abstract: A composite material includes a thermoplastic polymer matrix throughout which cellulose pulp fibers and filler material are dispersed. The composite may be in solid (e.g. pellet) form, or molten form. The presence of cellulose pulp fibers unexpectedly reduces cycle time, and/or unexpectedly improves certain properties, when the composite is used in injection molding. A method for molding a part includes providing a solid composite that includes thermoplastic polymer, filler material, and cellulose pulp fibers to an injection molding system; melting the polymer to produce a molten mixture; and injecting the molten mixture into a mold. Another method for molding a part includes injecting a molten mixture of thermoplastic polymer, filler material, and cellulose pulp fibers into a mold; and removing the formed part from the mold after a cycle time at least 10% less than that required when using a comparable molten mixture that excludes the pulp fibers.

公开(公告)号：US20200048444A1

公开(公告)日：2020-02-13

申请号：US16388615

申请日：2019-04-18

Applicant: International Paper Company

Inventor： Robert T. Hamilton ,  Harshadkumar M. Shah ,  Jeffrey J. Cernohous ,  Neil R. Granlund ,  David E. Fish

IPC: C08L23/12 ,  C08L97/02 ,  C08L55/02 ,  C08L53/00 ,  C08J5/04

Abstract: A composition comprising 10 to 50 wt % wood pulp fiber and 45 to 85 wt % thermoplastic polymer wherein the dilution level for detection in a bag at 40° C. is equal to or less than 450 as determined by ASTM E679.

公开(公告)号：US20170191220A1

公开(公告)日：2017-07-06

申请号：US15462506

申请日：2017-03-17

Applicant: INTERNATIONAL PAPER COMPANY

Inventor： Christopher A. Mann ,  David G. Marsh ,  Robert T. Hamilton ,  Charles E. Miller ,  Harshadkumar Shah

IPC: D21H11/00 ,  C08L101/00 ,  C08L97/02 ,  C04B16/06

CPC classification number: D21H11/00 ,  B27N3/08 ,  C04B16/06 ,  C08L97/02 ,  C08L101/00 ,  C08L2205/16 ,  D21H17/00 ,  D21H25/005 ,  Y10T428/2982 ,  C08L2666/02 ,  C08L2666/26

Abstract: A particle or particles of cellulosic wood pulp fibers having a top and bottom face and a hexagonal perimeter, and methods of using it.