Coextruded ribbon for roller surfaces background

Patent metadata

Field	Value
Publication number	US-2020338799-A1
Application number	US-201816757888-A
Country	US
Kind code	A1
Filing date	Oct 31, 2018
Priority date	Nov 2, 2017
Publication date	Oct 29, 2020
Grant date	—

Abstract

A coextruded ribbon. The coextruded ribbon includes a first layer and an opposed second layer. The first layer includes a first side optionally having an adhesive thereon. The first layer further includes an opposed second side having a plurality of protrusions extending therefrom. The second layer includes a repellant material contacting the plurality of protrusions.

First claim

1 . A coextruded ribbon comprising first and second layers:
the first layer comprising a polymeric material and further comprising:
a first side optionally having an adhesive thereon; and
an opposed second side having a plurality of protrusions extending therefrom,
and the second layer comprising a repellant material contacting the plurality of protrusions.

2 . The coextruded ribbon of claim 1 , wherein the polymeric material comprises at least one of a polyester, a polyurethane, a polyethylene, a polypropylene, a mixture thereof, or a copolymer thereof.

3 . The coextruded ribbon of claim 1 , wherein ribbon has first and second opposed ends, and wherein the protrusions are elongated and are spaced between the first and second ends of the ribbon.

4 . The coextruded ribbon of claim 1 , wherein a pitch between adjacent protrusions is in a range of from 0.2 millimeter to 5 millimeters.

5 . The coextruded ribbon of claim 1 , wherein a height of the plurality of protrusions is independently in a range of from 0.1 millimeter to 5.0 millimeters.

6 . The coextruded ribbon of claim 1 , wherein a cross-sectional shape of the protrusions is independently a triangle, a square, a rectangle, a diamond, a hexagon, a trapezoid, or a semi-circle.

7 . The coextruded ribbon of claim 1 , wherein the repellant material comprises at least one of:
a siloxane material; or a mixture of a thermoplastic polymer and a fluoropolymer additive.

8 . The coextruded ribbon of claim 7 , wherein the siloxane material comprises polydimethylsiloxane.

9 . A method of making a coextruded ribbon, the method comprising:
coextruding a mixture of a polymeric material and a repellant material through a die, wherein the polymeric material forms a first layer and the repellant material forms a second layer, and the die forms a plurality of protrusions on the first layer to which the second layer is attached.

10 . The method of claim 9 , wherein the polymeric material comprises at least one of a polyester, a polyurethane, a polyethylene, a polypropylene, a mixture thereof, or a copolymer thereof.

11 . The method of claim 9 , wherein the repellant material comprises at least one of:
a siloxane material; or a mixture of a thermoplastic polymer and a fluoropolymer additive.

12 . The method of claim 11 , wherein the siloxane material comprises polydimethylsiloxane.

13 . The method of claim 11 , wherein the siloxane material is a copolymer that is greater than 50 weight percent polydimethylsiloxane.

14 . The method of claim 11 , wherein the siloxane material is a copolymer of at least one of (a) a polyorganosiloxane and a polyolefin or (b) a polyorganosiloxane and a polycarbonate.

15 . The method of claim 11 , wherein the fluoropolymer additive comprises a composition according to the formula:

wherein
R 1 is a linear or branched C 2 -C 40 hydrocarbyl group;
R f is a perfluorinated group comprising a number-average of 3 to 5 carbons;
X 1 is selected from the group consisting of —NH— and a bond, and
y is 1 to 3.

Assignees

• 3M Innovative Properties Co

Inventors

• Retterath Joshua M
• Abbott Emma M
• Tait Bruce E
• Hill Anthony L
• Ausen Ronald W
• Kuduva Raman Thanumoorthy Ramasubramani
• Imsande Jeffrey M
• Kinning David J
• Appeaning Maria A
• Teverovskiy Georgiy

Classifications

• B32B33/00

  Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class · CPC title

• B29C48/07 Primary

  Flat, e.g. panels · CPC title

• B32B27/08

  of synthetic resin · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B3/30

  characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)} · CPC title