RU2018134113A - Способ изготовления наполненного пленочного полотна - Google Patents

Способ изготовления наполненного пленочного полотна Download PDF

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RU2018134113A
RU2018134113A RU2018134113A RU2018134113A RU2018134113A RU 2018134113 A RU2018134113 A RU 2018134113A RU 2018134113 A RU2018134113 A RU 2018134113A RU 2018134113 A RU2018134113 A RU 2018134113A RU 2018134113 A RU2018134113 A RU 2018134113A
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film web
microporous
mass
preceding paragraphs
polymer component
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RU2018134113A
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English (en)
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RU2734514C2 (ru
RU2018134113A3 (ru
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Людвиг БЁРМАНН
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Ркв Се
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  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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Claims (18)

1. Способ изготовления наполненного пленочного полотна из микропористого исходного пленочного полотна, состоящего из термопластичного полимерного материала, которое содержит по меньшей мере один низкоплавкий полимерный компонент, высокоплавкий полимерный компонент и наполнитель, причем способ включает следующие стадии:
нагревание микропористого исходного пленочного полотна до частично расплавленного состояния, в котором по меньшей мере один низкоплавкий полимерный компонент находится в жидком расплавленном состоянии, а по меньшей мере один высокоплавкий компонент не находится в жидком расплавленном состоянии, и
охлаждение посредством пропускания частично расплавленного пленочного полотна через охлаждаемый межвальцовый зазор.
2. Способ по п. 1, отличающийся тем, что микропористое исходное пленочное полотно является однослойным.
3. Способ по п. 1, отличающийся тем, что микропористое исходное пленочное полотно является многослойным, в частности, микропористое исходное пленочное полотно является соэкструдированным пленочным полотном.
4. Способ по любому из пп. 1-3, отличающийся тем, что микропористое исходное пленочное полотно является растянутым, в частности, исходное пленочное полотно после экструзии растянуто с кратностью растягивания, лежащей в диапазоне от 1,2:1 до 4:1, предпочтительно - от 1,5:1 до 3:1.
5. Способ по любому из предыдущих пунктов, отличающийся тем, что микропористое исходное пленочное полотно содержит от 10 масс. % до 90 масс. % наполнителя, в частности - от 20 масс. % до 80 масс. % наполнителя, в частности -от 30 масс. % до 75 масс. % наполнителя, в пересчете на 100 масс. % исходного пленочного полотна.
6. Способ по любому из предыдущих пунктов, отличающийся тем, что микропористое исходное пленочное полотно является воздухопроницаемым.
7. Способ по любому из предыдущих пунктов, отличающийся тем, что микропористое исходное пленочное полотно имеет проницаемость для водяного пара, лежащую в диапазоне от 500 г/м2 за 24 часа до 5000 г/м2 за 24 часа при измерении согласно стандарту ASTM Е398 при 37,8°С и 90%-ной относительной влажности воздуха.
8. Способ по любому из предыдущих пунктов, отличающийся тем, что микропористое исходное пленочное полотно содержит от 15 масс. % до 85 масс. % низкоплавкого полимерного компонента и от 85 масс. % до 15 масс. % высокоплавкого полимерного компонента, в пересчете на 100 масс. % низкоплавкого и высокоплавкого компонентов.
9. Способ по любому из предыдущих пунктов, отличающийся тем, что в нем используют исходное пленочное полотно, содержащее по меньшей мере один полиэтилен в качестве низкоплавкого полимерного компонента и по меньшей мере один полипропилен в качестве высокоплавкого полимерного компонента.
10. Способ по любому из предыдущих пунктов, отличающийся тем, что нагревание микропористого исходного пленочного полотна выполняют с использованием нагревательного цилиндра, причем между нагревательным цилиндром и пленочным полотном отсутствует нетканый материал.
11. Способ по любому из предыдущих пунктов, отличающийся тем, что микропористое исходное пленочное полотно изготовлено посредством экструзии с раздувом, плоскощелевой экструзии или экструзии с раздувом и плоскощелевой экструзии.
12. Способ по любому из предыдущих пунктов, отличающийся тем, что пленочное полотно в охлаждаемом межвальцовом зазоре подвергают охлаждению до температуры, лежащей по меньшей мере на 10°С - 30°С ниже температуры плавления кристаллита по меньшей мере одного низкоплавкого полимерного компонента.
13. Пленочное полотно, полученное способом по любому из предыдущих пунктов.
14. Пленочное полотно по п. 13, отличающееся тем, что оно имеет поверхностную плотность, лежащую в диапазоне от 1 г/м2 до 30 г/м2, в частности - от 5 г/м2 до 25 г/м2, предпочтительно - от 7 г/м2 до 20 г/м2, более предпочтительно - от 10 г/м2 до 20 г/м2.
15. Применение пленочного полотна по п. 13 или 14 в области гигиены или медицины, в частности - для изготовления изнаночных слоев в подгузниках, наматрасников или женских гигиенических прокладок.
16. Применение пленочного полотна по п. 13 или 14 в области строительства или в качестве защитной пленки для автомобилей.
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