RU2019116156A - Термоусадочная пленка с полиамидом 6/6.6 - Google Patents

Термоусадочная пленка с полиамидом 6/6.6 Download PDF

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RU2019116156A
RU2019116156A RU2019116156A RU2019116156A RU2019116156A RU 2019116156 A RU2019116156 A RU 2019116156A RU 2019116156 A RU2019116156 A RU 2019116156A RU 2019116156 A RU2019116156 A RU 2019116156A RU 2019116156 A RU2019116156 A RU 2019116156A
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polyamide composition
polymer film
temperature
polyamide
film
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RU2019116156A
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RU2019116156A3 (ru
RU2755359C2 (ru
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Рольф МИНКВИТЦ
Сильке БИДАСЕК
Рони КНИРИМ
Франк ХЕРБОТ
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Басф Се
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
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    • B29C49/0042—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor without using a mould
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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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    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00—Packaging other articles presenting special problems
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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    • B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
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Claims (26)

1. Способ изготовления полимерной пленки (Р), которая содержит полиамидную композицию (PZ), причем полиамидная композиция (PZ) включает полиамид 6/6.6 и олигомерные полиамиды, причем из полиамидной композиции (PZ) в соответствии со стандартом ISO 6427:2013 может быть экстрагировано от 5 до 25 % масс. олигомерных полиамидов в пересчете на общую массу полиамидной композиции (PZ) и причем способ включает следующие стадии:
i) предоставление полиамидной композиции (PZ) в расплавленной форме в первом экструдере,
ii) экструдирование предоставленной на стадии i) полиамидной композиции (PZ) в расплавленной форме из первого экструдера через кольцевой мундштук, причем получают рукав, который содержит полиамидную композицию (PZ) в расплавленной форме,
iii) охлаждение полученного на стадии ii) рукава, который содержит полиамидную композицию (PZ) в расплавленной форме, в водяной ванне до первой температуры (Т1), причем полиамидная композиция (PZ) затвердевает и причем получают первую рукавную пленку, которая содержит полиамидную композицию (PZ),
iv) нагревание полученной на стадии iii) первой рукавной пленки до второй температуры (Т2), причем получают нагретую первую рукавную пленку, которая содержит полиамидную композицию (PZ),
v) вдувание воздуха в полученную на стадии iv) нагретую первую рукавную пленку, которая растягивается в ширину и остывает до третьей температуры (Т3), причем получают полимерную пленку (Р), которая содержит полиамидную композицию (PZ).
2. Способ по п. 1, отличающийся тем, что полимерная пленка (Р) содержит от 0,1 до 80 % масс. полиамидной композиции (PZ) в пересчете на общую массу полимерной пленки (Р) и/или является многослойной плёнкой.
3. Способ по п. 1, отличающийся тем, что полиамид 6/6.6 содержит от 70 до 78 % масс. структурных единиц полиамида 6 и от 22 до 30 % масс. структурных единиц полиамида 6.6, соответственно в пересчете на общую массу полиамида 6/6.6.
4. Способ по п. 1, отличающийся тем, что полиамидная композиция (PZ) обладает температурой плавления (TM(PZ)) в интервале от 178 до 187°С.
5. Способ по п. 1, отличающийся тем, что полученный на стадии ii) рукав обладает толщиной от 10 мкм до 1 мм.
6. Способ по п. 1, отличающийся тем, что первая температура (Т1) на стадии iii) находится в интервале от 5 до 60°С.
7. Способ по п. 1, отличающийся тем, что полиамидная композиция (PZ) характеризуется температурой стеклования (TG(PZ)) и температурой плавления (TM(PZ)), причем вторая температура (Т2) на стадии iv) выше температуры стеклования (TG(PZ)) и ниже температуры плавления (TM(PZ)) полиамидной композиции (PZ).
8. Способ по п. 1, отличающийся тем, что рукав, который содержит полиамидную композицию (PZ), во время охлаждения на стадии iii) пропускают через первую валковую систему, причем рукав растягивается в длину.
9. Способ по п. 1, отличающийся тем, что нагретую первую рукавную пленку, которая содержит полиамидную композицию (PZ), во время вдувания воздуха на стадии v) пропускают через вторую валковую систему, причем нагретая первая рукавная пленка растягивается в длину.
10. Способ по п. 1, отличающийся тем, что полимерная пленка (Р) обладает толщиной от 0,1 мкм до <1 мм.
11. Способ по одному из пп. 1-10, отличающийся тем, что непосредственно после стадии v) реализуют следующие стадии:
vi) пропускание полученной на стадии v) полимерной пленки (Р) через по меньшей мере один третий валик,
vii) нагревание полученной на стадии v) полимерной пленки (Р) до четвертой температуры (Т4), превышающей температуру стеклования (TG(PZ)) полиамидной композиции (PZ), причем получают нагретую полимерную пленку (Р),
viii) пропускание полученной на стадии vii) нагретой полимерной пленки (Р) через по меньшей мере один четвертый валик, причем получают полимерную пленку (Р),
причем нагретую полимерную пленку (Р) между стадиями vii) и viii), во время реализации стадии viii) и/или непосредственно после стадии viii) охлаждают до пятой температуры (Т5), которая ниже температуры стеклования (TG(PZ)) полиамидной композиции (PZ).
12. Полимерная пленка (Р), которая может быть получена способом по одному из пп. 1-11.
13. Способ упаковки пищевых продуктов, который включает следующие стадии:
а) предоставление пищевого продукта, который упакован по меньшей мере в одну полимерную пленку (Р) по п. 12, причем по меньшей мере одна полимерная пленка (Р) характеризуется температурой подготовки (TB),
b) нагревание по меньшей мере одной полимерной пленки (Р) до температуры начала усадки (TS), в результате которого по меньшей мере одна полимерная пленка (Р) усаживается, причем получают пищевой продукт, который упакован по меньшей мере в одну претерпевшую усадку полимерную пленку (Р).
14. Способ по п. 13, отличающийся тем, что температура начала усадки (TS) на стадии b) находится в интервале от 50 до 150°С.
15. Способ по п. 13 или 14, отличающийся тем, что температура начала усадки (TS) на стадии b) выше температуры стеклования (TG(PZ)) полиамидной композиции (PZ), содержащейся в по меньшей мере одной полимерной пленке (Р).
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