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Surface-treated fillers for polyester films

A technology of surface treatment and polyester film, applied in the direction of fibrous filler, dyed low molecular organic compound treatment, application, etc., can solve the problems of high opacity, no reference to polyester film, microporous film cannot be prepared, etc.

Active Publication Date: 2022-04-01
OMYA INT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, said membranes have the disadvantage that during the production of polyester films suitable voids for microporous membranes with low density and high opacity can hardly be produced without membrane rupture
[0015] However, international patent application PCT / EP2016 / 078466 makes absolutely no mention of polyester films with high filler content (ie >30% by weight)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0437] The preparation of embodiment 1-masterbatch

[0438] Polypropylene masterbatches containing calcium carbonate fillers CC1-CC8 and polymer P1 were prepared continuously on a laboratory scale Buss kneader (Buss PR46 from Buss AG, Switzerland). Polymer P1 was pre-dried in an oven at 160° C. for 4 hours before processing. The composition and filler content of the prepared masterbatches are summarized in Table 1 below. The exact filler content is determined by the ash content.

[0439] Table 1 : The composition and filler content of the prepared masterbatch

[0440] masterbatch filler Filler content [% by weight] MB1 (this invention) CC1 50 MB2 (this invention) CC2 50 MB3 (this invention) CC3 50 MB4 (this invention) CC4 50 MB5 (the present invention) CC5 50 MB6 (the present invention) CC6 50 MB7 (comparison) CC7 50 MB8 (comparison) CC8 50

[0441] Masterbatches MB1 to MB6 could be produced...

Embodiment 2

[0442] The preparation of embodiment 2-polyester casting film

[0443] Cast films were produced on a Collin Laboratory Film Line (Dr. Collin GmbH, Germany) using a twin-screw extruder with a 30 mm diameter T-die and a take-up system with temperature-controlled chill rolls. The chill roll was kept at a distance of 20 mm from the T-shaped die to produce a polyester sheet with a thickness of about 1000 μm. Extruder and die temperatures were consistent throughout the experiment. The mold temperature was set at 270 °C; the line speed was 0.5 m / min. Masterbatches or polymers were mixed with neat polymer P1 to receive cast films with the concentrations provided in Table 2.

[0444] Table 2: Composition and properties of the prepared cast film

[0445] film sample masterbatch Filler content [% by weight] 1 (comparison) none 0 2 (the present invention) MB1 35 3 (the present invention) MB1 45 4 (the present invention) MB2 35 5 (thi...

Embodiment 3

[0447] Example 3 - Preparation of polyester cast film by direct extrusion

[0448] Cast films were produced on a Collin Laboratory Film Line (Dr. Collin GmbH, Germany) using a twin-screw extruder with a 30 mm diameter T-die and a take-up system with temperature-controlled chill rolls. The chill roll was kept at a distance of 20 mm from the T-shaped die to produce a polypropylene sheet with a thickness of about 1000 μm. The extruder is equipped with a vacuum exhaust system to remove volatiles and moisture from raw materials during extrusion. Extruder and die temperatures were consistent throughout the experiment. The mold temperature was set at 270 °C; the line speed was 0.5 m / min. Masterbatches or polymers were mixed with neat polymer P1 to receive cast films with the concentrations provided in Table 2.

[0449] table 3 : Composition and properties of the as-prepared cast film

[0450] film sample filler Filler content [% by weight] 1 (comparison) ...

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PUM

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Abstract

The present invention relates to a single-layer or multilayer polyester film, a process for the preparation of the single-layer or multilayer polyester film, the use of a surface-treated filler material product as a voiding agent in the single-layer or multilayer polyester film , articles comprising the single-layer or multi-layer polyester film, and the use of the single-layer or multi-layer polyester film in the following aspects: packaging products, insulation or heat insulation materials, solar energy, marine or aviation applications, science, electronics Or acoustic applications, wires, cables, radio frequency identification, flexible circuits, graphic arts, stone paper, holograms, filtration products, cosmetics, imaging for household products, recording media or industrial products.

Description

technical field [0001] The present invention relates to a single-layer or multilayer polyester film, a method for preparing the single-layer or multi-layer polyester film, the product of a surface-treated filler material acts as a voiding in the single-layer or multi-layer polyester film The use of the agent, the article comprising the single-layer or multi-layer polyester film, and the use of the single-layer or multi-layer polyester film in the following aspects: packaging products, insulation or heat insulation materials, solar energy, marine or aviation applications, Scientific, electronic or acoustic applications, wires, cables, radio frequency identification, flexible circuits, graphic arts, stone paper, holograms, filtration products, cosmetics, imaging of household products, recording media or industrial products. Background technique [0002] Polyester films such as cast film, blown film, double bubble film, monoaxially and biaxially oriented polyester film are used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18B32B27/36C08K3/26C09C1/02
CPCB32B27/36C08J5/18C09C1/021C08J2367/00C08J2367/02C08J2367/04C08K2003/265C09C3/08C01P2004/51C01P2006/12C08K3/22C08K3/30C08K3/36C08K5/0041C08K5/005C08K9/04C08K2201/005C08K2201/006C08L67/02C08J3/226C08K9/06C08K3/26B32B27/20C08K2201/001B32B2264/104B29C48/305B29C48/022B29C48/914B29C48/08B29K2067/00B29K2509/02B29L2007/008B32B27/08B32B2264/107C01P2004/61C01P2004/62
Inventor M·布鲁纳M·克纳尔M·廷克K·U·舒尔茨
Owner OMYA INT AG