Terpolymer for melt blown media for air filtration
A terpolymer, melt-blown technology, applied in the direction of conjugated synthetic polymer rayon, filtration separation, single-component synthetic polymer rayon, etc.
Active Publication Date: 2013-10-02
BOREALIS AG
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- Abstract
- Description
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- Application Information
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Problems solved by technology
The hot air used to attenuate the fibers during meltblown web production creates significant costs
Method used
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[0072] 1. Definition / measurement method
[0073] Unless otherwise stated, the following definitions of terms and measurement methods apply to the above general description of the invention as well as to the following examples.
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Abstract
Melt-blown fiber comprising a terpolymer of propylene, ethylene and a C4 to C10 a-olefin, wherein further the melt blown fiber and / or the terpolymer has / have a melt flow rate MFR25 (230o C) of at least 300 g / 10min, the amount of propylene in the terpolymer is at least 90.0 wt.-%, the weight ratio of ethylene and a-olefin within the terpolymer is 1 / 100 to below 1 / 1, and the terpolymer has (2,1) regiodefects of below 0.4 mol.-%.10
Description
technical field [0001] The present invention relates to a novel meltblown web based on meltblown fibers comprising a terpolymer, and articles made from the meltblown web, in particular filter media. Background technique [0002] Meltblown webs with a nonwoven structure composed of meltblown fibers are typically manufactured by a one-step process in which high velocity gas blows molten thermoplastic resin from the extruder die tip to a conveyor or take-up screen ), thus forming a fine fibered self-bonding web. Although many types of polymers can be employed for meltblown fibers and fabrics, polypropylene is one of the most commonly used polymers. Typically, for the manufacture of meltblown fibers and webs, very low viscosity polypropylene homopolymers are used. However, such polymers are limited by limited mechanical strength. To overcome this problem, spunbond fabrics were created. The polypropylene fibers of the spunbond fabric are thicker compared to the meltblown fibe...
Claims
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Login to View More IPC IPC(8): D01F6/06D01F8/06
CPCD01D5/0985D01F6/30D04H1/56D04H1/541D04H3/007D04H3/16Y10T428/298Y10T442/68D04H1/43838D01F6/46D01F6/78D04H1/4291B01D39/04D01F6/06D04H1/565
Inventor H·范·帕里顿A·蒂尼斯J·菲比希M·帕金森
Owner BOREALIS AG