RU2020123216A - Способ получения волокнистого продукта и волокнистый продукт - Google Patents

Способ получения волокнистого продукта и волокнистый продукт Download PDF

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Publication number
RU2020123216A
RU2020123216A RU2020123216A RU2020123216A RU2020123216A RU 2020123216 A RU2020123216 A RU 2020123216A RU 2020123216 A RU2020123216 A RU 2020123216A RU 2020123216 A RU2020123216 A RU 2020123216A RU 2020123216 A RU2020123216 A RU 2020123216A
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layer
fibers
paragraphs
web
fibrous
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RU2020123216A
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RU2777732C2 (ru
RU2777732C9 (ru
RU2020123216A3 (ru
Inventor
Карита КИННУНЕН-РАУДАСКОСКИ
Марья ЮВОНЕН
Эса ТОРНИАЙНЕН
Мартин ХЯГГБЛОМ
Туомас МУСТОНЕН
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Паптик Ой
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Claims (41)

1. Способ получения многослойного волокнистого продукта, содержащего по меньшей мере два перекрывающихся слоя, характеризующийся получением в процессе формирования полотна
- первого слоя, содержащего в основном натуральные волокна, и
- второго слоя, содержащего синтетические волокна или частицы,
при этом первый и второй слои получают и соединяют друг с другом в процессе формования пены, при этом указанный первый слой и указанный второй слой расположены путем наложения одного слоя на другой, при этом указанный второй слой способен придавать волокнистому продукту свойства термосклеивания.
2. Способ по п. 1, в котором
- первый слой формируют в виде полотна из первой волокнистой кашицы, содержащей первую композицию, и
- второй слой наносят на полотно, сформированное посредством первого слоя, из второй волокнистой кашицы, содержащей вторую композицию, с получением многослойного полотна,
при этом указанная первая композиция отличается от указанной второй композиции, и по меньшей мере один слой, предпочтительно как первый, так и второй слои, получены путем формования пены.
3. Способ по п. 1 или 2, в котором первый и второй слои получают и соединяют друг с другом в процессе формования пены, предпочтительно с применением напорного ящика для формирования многослойного полотна.
4. Способ по любому из пп. 1-3, в котором
- первый слой формируют в виде полотна с первым содержанием твердых веществ,
- указанное полотно подвергают сушке для увеличения содержания твердых веществ в полотне с получением модифицированного полотна со вторым содержанием твердых веществ, и
- второй слой наносят на модифицированное полотно.
5. Способ по любому из пп. 1-3, в котором
- первый слой формируют в виде полотна с первым содержанием твердых веществ,
- указанное полотно подвергают прессованию в секции прессования, сушке на сушильном цилиндре в секции сушильного цилиндра или их комбинации для увеличения содержания твердых веществ в полотне с получением модифицированного полотна со вторым содержанием твердых веществ, и
- второй слой наносят на модифицированное полотно.
6. Способ по любому из пп. 1-5, включающий получение посредством сушки модифицированного первого слоя, содержание сухого вещества в котором составляет от 15 до 35 мас.%, в частности от 20 до 35 мас.%, перед нанесением второго слоя на первый слой.
7. Способ по любому из пп. 1-6, в котором второй слой наносят на модифицированное полотно в форме пены.
8. Способ по любому из пп. 1-7, в котором многослойное полотно, сформированное посредством указанного первого слоя и указанного второго слоя, высушивают с получением многослойного волокнистого продукта.
9. Способ по п. 8, в котором сушку многослойного полотна осуществляют путем бесконтактной сушки.
10. Способ по п. 8 или 9, в котором сушку осуществляют с применением по меньшей мере одного способа, выбранного из группы, состоящей из вакуумной сушки, сушки горячим воздухом, сухо-воздушной сушки, инфракрасной сушки и их комбинаций.
11. Способ по любому из пп. 1-10, в котором первый слой формируют из первой волокнистой кашицы, содержащей натуральные волокна, выбранные из целлюлозных и лигноцеллюлозных волокон и их комбинаций, в частности, первая волокнистая кашица содержит целлюлозные или лигноцеллюлозные волокна или их комбинации, полученные из однолетних или многолетних растений, в частности, из древесины.
12. Способ по любому из пп. 1-11, в котором второй слой формируют из второй волокнистой кашицы, содержащей термопластичные волокна или частицы, выбранные из полиактидных волокон или частиц, волокон или частиц из полимера гликолевой кислоты, полиолефиновых, полиэтилентерефталатных волокон или частиц, волокон или частиц из сложного полиэфира, полиамидных волокон или частиц, волокон или частиц из поливинилового спирта, полибутиленсукцинатных или двухкомпонентных (бикомпонентных) волокон или частиц и их комбинаций, в частности, вторая волокнистая кашица содержит биоразлагаемые термопластичные волокна, такие как полиактидные или полиактид-полибутиленсукцинатные волокна.
13. Способ по любому из пп. 1-12, в котором второй слой формируют из второй волокнистой кашицы, содержащей термопластичные волокна, линейная плотность которых составляет до 10 дтекс, предпочтительно до 5 дтекс, например от 1 до 5 дтекс, и средняя длина которых составляет от 1 до 50 мм, предпочтительно от 1 до 12 мм, например, от 6 до 12 мм.
14. Способ по любому из пп. 1-13, в котором первая волокнистая кашица наряду с натуральными волокнами также содержит от 0,1 до 15% по массе, в расчете на содержание твердых веществ, добавки, выбранной из поверхностно-активных веществ, связующих веществ и их комбинаций.
15. Способ по любому из пп. 1-14, в котором второй слой формируют из второй волокнистой кашицы, которая наряду с синтетическими волокнами содержит от 0,1 до 15% по массе, в расчете на содержание твердых веществ, добавки, выбранной из поверхностно-активных веществ, связующих веществ и их комбинаций.
16. Способ по любому из пп. 1-15, отличающийся тем, что первая или вторая волокнистая кашица или и та и другая содержат по меньшей мере одно связующее вещество, выбранное из группы природных связующих веществ и биополимеров, таких как крахмал или модифицированный крахмал или производные крахмала, хитозан, альгинат, или синтетических связующих веществ, таких как винилацетат и акрилатный латекс или полиуретан или стирол-бутадиеновый латекс, поливиниловый спирт или поливинилацетат, или любую смесь перечисленных связующих веществ или сополимеров, в частности, термопластичное связующее вещество.
17. Способ по любому из пп. 1-16, в котором первый или второй слой или оба слоя пропитаны связующим веществом.
18. Способ по любому из пп. 1-17, в котором первый слой содержит от более 50% до 100% по массе, в расчете на общую массу волокон в первом слое, натуральных волокон.
19. Способ по любому из п.п. 1-18, в котором второй слой содержит до 100%, например, от 50 до 100%, например, от 51 до 99% по массе, в расчете на общую массу волокон во втором слое, термопластичных волокон и/или частиц.
20. Многослойный волокнистый продукт, такой как волокнистая упаковка, волокнистый лист или волокнистое полотно, полученный способом по любому из пп. 1-19, содержащий
- базовый слой, изготовленный в основном из натуральных волокон,
- термосклеиваемый слой, расположенный на базовом слое,
характеризующийся тем, что указанный термосклеиваемый слой состоит в основном из термопластичных синтетических волокон или частиц.
21. Продукт по п. 20, в котором термосклеиваемый слой состоит в основном из биоразлагаемых термопластичных волокон, линейная плотность которых составляет до 10 дтекс, предпочтительно до 5 дтекс, например, от 1 до 5 дтекс, и средняя длина которых составляет от 1 до 12 мм. предпочтительно от 1 до 12 мм, например, от 6 до 12 мм.
22. Продукт по п. 20 или 21, в котором плотность (граммаж) термосклеиваемого слоя составляет 10 г/м2 или менее, преимущественно от 1 до 4 г/м2, тогда как плотность базового слоя предпочтительно составляет от 20 до 100 г/м2, например, от 30 до 70 г/м2, в частности от 20 до 40 г/м2.
23. Продукт по любому из пп. 20-22, в котором на поверхности базового слоя, противоположной термосклеиваемому слою, расположен слой волокнистого материала, обладающий гидрофобными свойствами.
24. Продукт по любому из пп. 20-23, в котором как основной слой, так и термосклеиваемый слой содержат одинаковое термопластичное связующее вещество, подходящим образом равномерно распределенное на указанных слоях или внутри них.
25. Продукт по любому из пп. 20-24, содержащий по меньшей мере один лист, сложенный таким образом, чтобы сформировать упаковку, при этом указанный продукт содержит по меньшей мере одну зону шва, в области которой лист прикреплен к самому себе или к другому листу посредством термосклеивания.
26. Применение продукта по любому из пп. 20-25 в качестве термосклеиваемого или термосвариваемого упаковочного материала.
RU2020123216A 2017-12-31 2018-12-31 Способ получения волокнистого продукта и волокнистый продукт RU2777732C9 (ru)

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FI20176206 2017-12-31
FI20176206A FI20176206A1 (en) 2017-12-31 2017-12-31 Process for making a fiber product and a fiber product
PCT/FI2018/050987 WO2019129934A1 (en) 2017-12-31 2018-12-31 Method of producing a fibrous product and a fibrous product

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PL3732040T3 (pl) 2023-11-06
US11371188B2 (en) 2022-06-28
KR20200125929A (ko) 2020-11-05
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AU2018398970B2 (en) 2023-03-16
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