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RU2018123179A - Ламинированный упаковочный материал и произведенные из него упаковочные емкости - Google Patents

Ламинированный упаковочный материал и произведенные из него упаковочные емкости Download PDF

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Publication number
RU2018123179A
RU2018123179A RU2018123179A RU2018123179A RU2018123179A RU 2018123179 A RU2018123179 A RU 2018123179A RU 2018123179 A RU2018123179 A RU 2018123179A RU 2018123179 A RU2018123179 A RU 2018123179A RU 2018123179 A RU2018123179 A RU 2018123179A
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RU
Russia
Prior art keywords
layer
packaging material
laminated
material according
laminated packaging
Prior art date
Application number
RU2018123179A
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English (en)
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RU2018123179A3 (ru
RU2732270C2 (ru
Inventor
Нильс ТОФТ
Ульф НЮМАН
Петер ФРИСК
Ален КОЛЛО
Петер ЭХМАН
Матс АЛЬДЕН
Original Assignee
Тетра Лаваль Холдингз Энд Файнэнс С.А.
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Publication of RU2018123179A publication Critical patent/RU2018123179A/ru
Publication of RU2018123179A3 publication Critical patent/RU2018123179A3/ru
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Publication of RU2732270C2 publication Critical patent/RU2732270C2/ru

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  • Engineering & Computer Science (AREA)
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Claims (22)

1. Ламинированный упаковочный материал (10a; 10b; 10c; 10d) на основе целлюлозы для упаковки жидких или полужидких пищевых продуктов посредством запечатывания термосваркой в асептические упаковочные емкости, содержащий основной слой (11a; 11b; 11c; 11d) материала из бумаги, картона или другого основанного на целлюлозе материала, самый внутренний термосвариваемый и непроницаемый для жидкости слой (15a; 15b; 15c; 15d) из термопластичного полимера, при этом самый внутренний полимерный слой предназначен для контакта с упакованным пищевым продуктом, барьерный слой (12-13-14(a; b; c; d)), ламинированный между основным слоем и самым внутренним слоем, причем барьерный слой является барьерной бумагой (12a; 12b; 12c; 12d) с компактной поверхностью, которая имеет плотность 800 кг/м3 или выше, значение гладкости поверхности ниже 450 мл/мин по Бендтсену (стандарт ISO 8791-2), толщину 60 мкм или ниже и граммаж 60 г/м2 или ниже.
2. Ламинированный упаковочный материал по п. 1, в котором барьерная бумага с компактной поверхностью имеет толщину от 20 до 40 мкм и граммаж от 20 до 40 г/м2, например, от 25 до 35 г/м2.
3. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором барьерная бумага с компактной поверхностью имеет значение гладкости поверхности по Бендтсену 300 мл/мин или ниже, например, 250 мл/мин или ниже, например, 200 мл/мин или ниже.
4. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором материал барьерной бумаги с компактной поверхностью имеет предел прочности при растяжении от 40 до 80, например, от 50 до 70, например, от 55 до 65 МПа в поперечном направлении CD, и от 140 до 180, например, от 150 до 170, например, от 155 до 165 МПа в машинном направлении MD.
5. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором материал барьерной бумаги с компактной поверхностью имеет влагопрочность от 0,4 до 0,6 кН/м (стандарт ISO 3781).
6. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором материал барьерной бумаги с компактной поверхностью имеет воздухопроницаемость ниже 2,0, например ниже 1,8 нм/Па.с, например 1,7 нм/Па.с и ниже, например от 0,1 до 1,7 нм/Па.с (стандарт SCAN P26).
7. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором материал барьерной бумаги с компактной поверхностью имеет сопротивление разрыву ниже 200 мН в направлении MD, а также в направлении CD (стандарт ISO 1974).
8. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором термопластичный полимер самого внутреннего термосвариваемого слоя является полиолефином, таким как полиэтилен, такой как смесь катализируемого металлоценом линейного полиэтилена низкой плотности (m-LLDPE) и полиэтилена низкой плотности (LDPE).
9. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором барьерная бумага с компактной поверхностью ламинируется к основному слою посредством связывающего слоя (19a, 19b; 19c; 19d) из термопластичного полимера, такого как полиолефин, такой как полиэтилен, такой как полиэтилен низкой плотности (LDPE).
10. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором барьерная бумага с компактной поверхностью покрыта посредством осаждения из паровой фазы барьерным покрытием, таким как покрытие алюминиевой металлизации.
11. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором барьерная бумага с компактной поверхностью покрыта материалом (13a; 13b; 13c; 13d) предварительного покрытия, а затем дополнительно покрыта посредством осаждения из паровой фазы барьерным покрытием (14a; 14b; 14c; 14d) на поверхности предварительного покрытия.
12. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором материал предварительного покрытия является барьерным материалом, выбираемым из группы, состоящей из поливинилового спирта (PVOH), этиленвинилового спирта (EVOH), крахмала и его производных, целлюлозы и ее производных, таких как нано/микрофибриллярная целлюлоза и нанокристаллическая целлюлоза, а также других полисахаридов и производных полисахаридов, поливинилиденхлорида (PVDC) и полиамидов.
13. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором барьерный материал предварительного покрытия представляет собой PVOH, а пароосаждаемое покрытие является металлизированным покрытием, имеющим оптическую плотность выше чем 1,5, например, 1,8, например, 2, например, от 2 до 3.
14. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором основной слой содержит слой целлюлозного материала, функционирующий как разделительный слой в многослойной конструкции внутри ламинированного упаковочного материала, причем плотность упомянутого разделительного слоя составляет менее 750 кг/м3, например, менее 700 кг/м3.
15. Ламинированный упаковочный материал по любому из предшествующих пунктов, в котором разделительный слой является волокнистым слоем, выполненным посредством процесса пенообразования, имеющим плотность от 100 до 600 кг/м3, например, от 200 до 500 кг/м3, например, от 300 до 400 кг/м3.
16. Емкость (30a; 30b; 30c; 30d) для упаковки жидких или полужидких пищевых продуктов, содержащая ламинированный упаковочный материал по любому из предшествующих пунктов.
17. Способ производства ламинированного упаковочного материала на основе целлюлозы для упаковки жидких или полужидких пищевых продуктов, содержащий этапы:
a) ламинирования барьерной бумаги с компактной поверхностью к основному слою,
b) нанесения самого внутреннего термосвариваемого термопластичного полимерного слоя на другую сторону барьерной бумаги с компактной поверхностью, и
c) нанесения дополнительных слоев, включая слой подложки для печати с напечатанным декоративным рисунком, на другую, внешнюю сторону основного слоя.
18. Способ производства ламинированного упаковочного материала на основе целлюлозы для упаковки жидких или полужидких пищевых продуктов по п. 17, в котором барьерная бумага с компактной поверхностью ламинируется к материалу основного слоя посредством нанесения от 0,5 до 4 г/м2 водной адгезивной композиции (21) с последующим адгезивным соединением упомянутой бумаги и основного слоя друг с другом (22).
19. Способ производства ламинированного упаковочного материала на основе целлюлозы для упаковки жидких или вязких пищевых продуктов по любому из пп. 17-18, в котором слой подложки для печати на внешней стороне материала основного слоя представляет собой дополнительную бумагу, имеющую плотность выше чем 600 кг/м3 и граммаж 70 г/м2 или ниже, для того чтобы она функционировала в качестве лицевого слоя в многослойной структуре, взаимодействуя с разделительным слоем основного слоя и барьерной бумагой с компактной поверхностью на противоположной стороне разделительного слоя и основного слоя.
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