HEAT-SEALABLE MULTILAYER PACKAGING FILM WITH IMPROVED OPACITY

WIPO Patent Application WO/2018/000411

A1

An improved multilayer polymer film is disclosed. The film may include a first skin layer(31), a second skin layer(32), and an intermediate layer(33) between the skin layers. The first, second and intermediate layers may be formed of respective first, second and intermediate polymer compositions. Each layer may have distributed therein particles of titanium dioxide to a weight content of from 6 percent to 14 percent. One or both the second skin layer(32) and the intermediate layer(33) may have distributed therein non-white pigment particles to a weight content of from 0.050 percent to 0.15 percent of such layer (s). The contents and distribution among layers of the pigments may provide for relatively disproportionate improvement of opacity while preserving a neutral white color surface to receive ink-printing, enabling high conformity of printed colors with target colors, and preserving weldability of the film to itself.

BROWN APRIL RENAE (US)
BROYLES NORMAN SCOTT (US)
GILBERTSON GARY WAYNE (US)
KOHLWEYER CHRISTIAN (DE)
WANG FEI (CN)

PCT/CN2016/088098

January 04, 2018

July 01, 2016

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PROCTER & GAMBLE (US)
BROWN APRIL RENAE (US)
BROYLES NORMAN SCOTT (US)
GILBERTSON GARY WAYNE (US)
KOHLWEYER CHRISTIAN (DE)
WANG FEI (CN)

B32B27/20

WO2002040270A1	2002-05-23
WO1999020664A2	1999-04-29
WO2006047374A1	2006-05-04
WO2008086539A2	2008-07-17
WO2006017518A2	2006-02-16

EP0388086A2	1990-09-19
EP2826624A1	2015-01-21
CN101367284A	2009-02-18
JP2001129949A	2001-05-15
CN1984777A	2007-06-20
JP2004114515A	2004-04-15
US20120237746A1	2012-09-20
US5119871A	1992-06-09
US6719742B1	2004-04-13
US6258308B1	2001-07-10
US20100159167A1	2010-06-24

See also references of EP 3478502A4

SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)

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