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RU2016116676A - Способ растягивания пленки - Google Patents

Способ растягивания пленки Download PDF

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Publication number
RU2016116676A
RU2016116676A RU2016116676A RU2016116676A RU2016116676A RU 2016116676 A RU2016116676 A RU 2016116676A RU 2016116676 A RU2016116676 A RU 2016116676A RU 2016116676 A RU2016116676 A RU 2016116676A RU 2016116676 A RU2016116676 A RU 2016116676A
Authority
RU
Russia
Prior art keywords
film
cylinders
polymer component
melting polymer
stretched
Prior art date
Application number
RU2016116676A
Other languages
English (en)
Other versions
RU2717530C2 (ru
RU2016116676A3 (ru
Inventor
Людвиг БЁРМАНН
Гюнтер ШРАЙНЕР
Original Assignee
Ркв Се
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ркв Се filed Critical Ркв Се
Publication of RU2016116676A publication Critical patent/RU2016116676A/ru
Publication of RU2016116676A3 publication Critical patent/RU2016116676A3/ru
Application granted granted Critical
Publication of RU2717530C2 publication Critical patent/RU2717530C2/ru

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/0226—Adhesive bandages or dressings with fluid retention members characterised by the support layer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0276—Apparatus or processes for manufacturing adhesive dressings or bandages
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
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    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
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    • A61F13/51464—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being stretchable or elastomeric
    • A—HUMAN NECESSITIES
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    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
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    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
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    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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    • C07D417/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
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    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
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    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • Y10T442/678—Olefin polymer or copolymer sheet or film [e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.]

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Epidemiology (AREA)
  • Manufacturing & Machinery (AREA)
  • Dermatology (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hematology (AREA)
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Claims (28)

1. Способ растягивания исходной пленки из термопластичного полимерного материала, содержащего по меньшей мере один низкоплавкий полимерный компонент и по меньшей мере один высокоплавкий полимерный компонент, включающий по меньшей мере следующие стадии:
нагревание исходной пленки до по меньшей мере частично расплавленного состояния, при котором по меньшей мере один низкоплавкий полимерный компонент находится в расплавленном жидком состоянии, и по меньшей мере один высокоплавкий полимерный компонент не находится в расплавленном жидком состоянии, с помощью по меньшей мере одного нагревательного цилиндра и
охлаждение путем прохождения частично расплавленной пленки через охлажденный зажим цилиндров,
причем пленку растягивают между по меньшей мере одним нагревательным цилиндром и охлажденным зажимом цилиндров при кратности растягивания, составляющей по меньшей мере 1:1,5.
2. Способ по п. 1, отличающийся тем, что используют исходную пленку, содержащую от 15 до 85 мас.% низкоплавкого полимерного компонента и от 85 до 15 мас.% высокоплавкого полимерного компонента на основе 100 мас.% низкоплавкого и высокоплавкого полимерных компонентов.
3. Способ по п. 1, отличающийся тем, что используют исходную пленку, содержащую по меньшей мере один полиэтилен, служащий в качестве низкоплавкого полимерного компонента, по меньшей мере один полипропилен, служащий в качестве высокоплавкого полимерного компонента.
4. Способ по п. 2, отличающийся тем, что используют исходную пленку, содержащую по меньшей мере один полиэтилен, служащий в качестве низкоплавкого полимерного компонента, по меньшей мере один полипропилен, служащий в качестве высокоплавкого полимерного компонента.
5. Способ по п. 1, отличающийся тем, что нагревание исходной пленки выполняют до температуры, на 5-20°C ниже точки плавления кристаллитов по меньшей мере одного высокоплавкого полимерного компонента.
6. Способ по п. 2, отличающийся тем, что нагревание исходной пленки выполняют до температуры на 5-20°C ниже точки плавления кристаллитов по меньшей мере одного высокоплавкого полимерного компонента.
7. Способ по п. 3, отличающийся тем, что нагревание исходной пленки выполняют до температуры на 5-20°C ниже точки плавления кристаллитов по меньшей мере одного высокоплавкого полимерного компонента.
8. Способ по п. 1, отличающийся тем, что пленку растягивают при кратности растягивания, составляющей по меньшей мере 1:2, предпочтительно по меньшей мере 1:2,5, в частности, по меньшей мере 1:3.
9. Способ по п. 2, отличающийся тем, что пленку растягивают при кратности растягивания, составляющей по меньшей мере 1:2, предпочтительно по меньшей мере 1:2,5, в частности, по меньшей мере 1:3.
10. Способ по п. 3, отличающийся тем, что пленку растягивают при кратности растягивания, составляющей по меньшей мере 1:2, предпочтительно по меньшей мере 1:2,5, в частности, по меньшей мере 1:3.
11. Способ по п. 5, отличающийся тем, что пленку растягивают при кратности растягивания, составляющей по меньшей мере 1:2, предпочтительно по меньшей мере 1:2,5, в частности, по меньшей мере 1:3.
12. Способ по п. 1, отличающийся тем, что цилиндры, образующие охлажденный зажим цилиндров, работают при более высокой скорости, чем по меньшей мере один нагревательный цилиндр.
13. Способ по п. 2, отличающийся тем, что цилиндры, образующие охлажденный зажим цилиндров, работают при более высокой скорости, чем по меньшей мере один нагревательный цилиндр.
14. Способ по п. 8, отличающийся тем, что цилиндры, образующие охлажденный зажим цилиндров, работают при более высокой скорости, чем по меньшей мере один нагревательный цилиндр.
15. Способ по п. 1, отличающийся тем, что выше охлажденного зажима цилиндров находятся два цилиндра, работающие при различных скоростях, так что пленка растягивается между первым и вторым цилиндром, и где по меньшей мере первый из двух цилиндров сконструирован как нагревательный цилиндр.
16. Способ по п. 2, отличающийся тем, что выше охлажденного зажима цилиндров находятся два цилиндра, работающие при различных скоростях, так что пленка растягивается между первым и вторым цилиндром, и где по меньшей мере первый из двух цилиндров сконструирован как нагревательный цилиндр.
17. Способ по п. 8, отличающийся тем, что выше охлажденного зажима цилиндров находятся два цилиндра, работающие при различных скоростях, так что пленка растягивается между первым и вторым цилиндром, и где по меньшей мере первый из двух цилиндров сконструирован как нагревательный цилиндр.
18. Способ по п. 1, отличающийся тем, что пленку подвергают охлаждению в охлажденном зажиме цилиндров до температуры по меньшей мере на 10-30°C ниже точки плавления кристаллитов по меньшей мере одного низкоплавкого полимерного компонента.
19. Способ по п. 1, отличающийся тем, что используют исходную пленку, содержащую от 1 до 75 мас.%, в частности, от 50 до 75 мас.% наполнителя, в частности, мела.
20. Пленка, получаемая способом по любому из пп. 1-19.
21. Пленка по п. 20, имеющая толщину, находящуюся в диапазоне от 2 до 13 мкм, или имеющая базовую массу от 1 до 15 г/м2.
22. Способ изготовления ламинированного материала, включающего нетканое полотно и пленку, отличающийся тем, что выполняют способ по любому из пп. 1-18, причем выше охлажденного зажима цилиндров находится по меньшей мере два нагревательных цилиндра, работающих при различных скоростях, так что пленка растягивается между первым и вторым нагревательным цилиндром, и где дополнительно нетканое полотно пропускают через второй нагревательный цилиндр, и пропускают его через охлажденный зажим цилиндров вместе с пленкой.
23. Способ изготовления ламинированного материала, включающего нетканое полотно и пленку, отличающийся тем, что выполняют способ по любому из пп. 1-19, и полученную пленку подвергают клеевому связыванию с нетканым полотном.
24. Ламинированный материал, включающий нетканое полотно и пленку, получаемый способом по п. 22 или 23.
25. Применение пленки по п. 20 или 21 или ламинированного материала, включающего нетканое полотно и пленку, по п. 24 в области гигиены или медицины, в частности, для изнаночных слоев памперсов, для наматрасников или гигиенических прокладок.
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