RU2011139477A - Содержащая множество микрослоев многослойная термоусадочная пленка и способ ее изготовления - Google Patents

Содержащая множество микрослоев многослойная термоусадочная пленка и способ ее изготовления Download PDF

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Publication number
RU2011139477A
RU2011139477A RU2011139477/05A RU2011139477A RU2011139477A RU 2011139477 A RU2011139477 A RU 2011139477A RU 2011139477/05 A RU2011139477/05 A RU 2011139477/05A RU 2011139477 A RU2011139477 A RU 2011139477A RU 2011139477 A RU2011139477 A RU 2011139477A
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Russia
Prior art keywords
shrink film
microlayers
thickness
film
shrink
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RU2011139477/05A
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English (en)
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RU2529517C2 (ru
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Рафизи РАМЛИ
Ларри Б. МКАЛЛИСТЕР
Антон Л. ТОММОНС
Брандфорд Е. ВЕБСТЕР
Джон Р. ВУЛФ
Кристофер БРАУН
Джордж Д. ВОФФОРД
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Криовак, Инк.
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    • B29C61/06—Making preforms having internal stresses, e.g. plastic memory
    • B29C61/0608—Making preforms having internal stresses, e.g. plastic memory characterised by the configuration or structure of the preforms
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick

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  • Engineering & Computer Science (AREA)
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  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

1. Многослойная термоусадочных пленка, содержащая:а. основной слой иб. микрослоистую часть, содержащую множество микрослоев,при этом каждый из микрослоев и основной слой имеют толщину, а соотношение толщины любого из микрослоев и толщины основного слоя составляет от около 1:2 до около 1:40, итермоусадочная пленка имеет толщину менее чем 0,7 мил и сопротивление разрыву по Элмендорфу (ASTM D1922-06a) по меньшей мере 10 г, измеренное по меньшей мере в одном направлении по длине или ширине пленки.2. Термоусадочная пленка по п.1, которая имеет степень ориентационного вытягивания по меньшей мере 3, измеренную по меньшей мере в одном направлении по длине или ширине пленки.3. Термоусадочная пленка по п.1, в которой по меньшей мере один из микрослоев содержит вторичный полимер.4. Термоусадочная пленка по п.3, в которой микрослоистая часть содержит от 1 до 50% вторичного полимера в пересчете на общий вес пленки.5. Термоусадочная пленка по п.1, в которой микрослоистая часть содержит по меньшей мере 10 микрослоев.6. Термоусадочная пленка по п.1, которая имеет соотношение толщины любого из микрослоев и толщины основного слоя составляет от около 1:5 до около 1:30.7. Термоусадочная пленка по п.1, которая дополнительно содержит по меньшей мере второй основной слой и в которой микрослоистая часть расположена между двумя основными слоями.8. Термоусадочная пленка по п.1, в которой каждый микрослой имеет толщину от около 0,001 до 0,015 мил.9. Термоусадочная пленка по п.1, в которой пленка имеет общую свободную усадку (ASTM D2732-03) по меньшей мере около 10% при 200°F.10. Термоусадочная пленка по п.1, в которой по меньшей мере один из микрослоев содержит смесь двух полимеров и имеет

Claims (15)

1. Многослойная термоусадочных пленка, содержащая:
а. основной слой и
б. микрослоистую часть, содержащую множество микрослоев,
при этом каждый из микрослоев и основной слой имеют толщину, а соотношение толщины любого из микрослоев и толщины основного слоя составляет от около 1:2 до около 1:40, и
термоусадочная пленка имеет толщину менее чем 0,7 мил и сопротивление разрыву по Элмендорфу (ASTM D1922-06a) по меньшей мере 10 г, измеренное по меньшей мере в одном направлении по длине или ширине пленки.
2. Термоусадочная пленка по п.1, которая имеет степень ориентационного вытягивания по меньшей мере 3, измеренную по меньшей мере в одном направлении по длине или ширине пленки.
3. Термоусадочная пленка по п.1, в которой по меньшей мере один из микрослоев содержит вторичный полимер.
4. Термоусадочная пленка по п.3, в которой микрослоистая часть содержит от 1 до 50% вторичного полимера в пересчете на общий вес пленки.
5. Термоусадочная пленка по п.1, в которой микрослоистая часть содержит по меньшей мере 10 микрослоев.
6. Термоусадочная пленка по п.1, которая имеет соотношение толщины любого из микрослоев и толщины основного слоя составляет от около 1:5 до около 1:30.
7. Термоусадочная пленка по п.1, которая дополнительно содержит по меньшей мере второй основной слой и в которой микрослоистая часть расположена между двумя основными слоями.
8. Термоусадочная пленка по п.1, в которой каждый микрослой имеет толщину от около 0,001 до 0,015 мил.
9. Термоусадочная пленка по п.1, в которой пленка имеет общую свободную усадку (ASTM D2732-03) по меньшей мере около 10% при 200°F.
10. Термоусадочная пленка по п.1, в которой по меньшей мере один из микрослоев содержит смесь двух полимеров и имеет состав, отличающийся от состава по меньшей мере одного другого микрослоя.
11. Термоусадочная пленка по п.1, в которой термоусадочная пленка имеет сопротивление разрыву по Элмендорфу (ASTM D1922-06a) по меньшей мере около 30 г/мил, измеренное по меньшей мере в одном направлении по длине или ширине пленки.
12. Термоусадочная пленка по п.11, в которой микрослоистая часть содержит повторяющуюся последовательность слоев, имеющую следующую структуру:
A/B,
в которой,
A означает микрослой, содержащий один или несколько полимеров,
B означает микрослой, содержащий смесь двух или более полимеров и
A имеет состав, отличающийся от состава В.
13. Термоусадочная пленка по п.12, в которой слои A и B содержат одно или несколько из следующего: сополимер этилена и альфа-олефина, сополимер этилена и винилацетата, гомополимеры или сополимер полипропилена, сополимер этилена и метакриловой кислоты, привитой малеиновым ангидридом полиэтилен, полиамид, или полиэтилен низкой плотности.
14. Термоусадочная пленка по п.12, в которой слой B содержит от 1 до 50% вторичного полимера в пересчете на общий вес пленки.
15. Способ изготовления многослойной термоусадочной пленки, согласно которому:
а. путем экструзии формируют основной слой,
б. путем совместной экструзии формируют множество микрослоев, образующих микрослоистую часть,
в. соединяют основной слой и микрослоистую часть, чтобы получить многослойную пленку, и
г. осуществляют ориентационное вытягивание многослойной пленки в условиях, придающих пленке способность к термоусадке,
при этом каждый из микрослоев и основной слой имеют толщину, а соотношение толщины любого из микрослоев и толщины основного слоя составляет от около 1:2 до около 1:40, и
пленка имеет общую свободную усадку (ASTM D2732-03) по меньшей мере около 10% при 200°F.
RU2011139477/05A 2009-03-06 2010-03-02 Содержащая множество микрослоев многослойная термоусадочная пленка и способ ее изготовления RU2529517C2 (ru)

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PCT/US2010/025889 WO2010101895A1 (en) 2009-03-06 2010-03-02 Multilayer, heat-shrinkeable film comprising a plurality of microlayers and method for its fabrication

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US8241736B2 (en) 2012-08-14
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