Multipurpose dual-layer hollow core composite multi-strand filament and manufacturing method and application thereof

Abstract

The invention discloses a multipurpose dual-layer hollow core composite multi-strand filament and a manufacturing method and application thereof. The dual-layer multi-strand filament includes a plurality of single-strand fiber filaments; each single-strand fiber filament includes an outer surface layer and an inner core layer, the outer surface layer covers a surface of the inner core layer, and the inner core layer is of a hollow tube structure, the plurality of single-strand fiber filaments are bond together to form a unit, the inner core layer is a high-melting-point inner core layer made of a PP or PET or TPU or TPEE material, the outer surface layer is a low-melting-point outer surface layer made of a PE or PP or POE or TPU or TPEE material, and the melting point of the high-melting-point inner core layer is higher than that of the low-melting-point outer surface layer. The fiber filaments adopt a hollow inner core structure, and then the dual-layer fiber filaments have high porosity, an excellent capillary water absorption effect, excellent water conductivity, excellent water absorbing performance, and excellent filtering performance; and one dual-layer fiber filament includes a plurality of single-strand filaments, and then one dual-layer fiber filament has higher porosity in a unit area, and has stronger water absorption effect than a single filament.

Description

technical field [0001] The invention relates to the field of fiber technology, in particular to a double-layer hollow-core composite multi-strand yarn and a manufacturing method thereof. Background technique [0002] Existing water-absorbing fiber rods are made of pure PET (polyester) or PP (polypropylene) monofilaments. The inside of the fiber filaments is closely bonded to form a certain elastic rod-like structure, which has the following problems: the fiber filaments themselves have certain water absorption and filterability, but the fiber filaments with a solid core structure are in terms of water absorption and filter tips for electronic cigarettes. , when used as a water-absorbing rod, because its core structure will have a certain impact on its water absorption and capillary water absorption, when used as a smoke filter, the fiber rod containing solid fiber filaments makes the smoke penetrating Not strong enough. Contents of the invention [0003] In view of the t...

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Problems solved by technology

[0002] Existing water-absorbing fiber rods are made of pure PET (polyester) or PP (polypropylene) monofilaments. The inside of the fiber filaments is closely bonded to form a certain elastic rod-like structure, which has the following problems: the fiber filaments themselves have certain water absorption and filterability, but the fiber filaments with a solid core structure are in terms of water absorption and filter tips for electronic cigarettes. , when used as a water-absorbing rod, because its core structure will have a certain impact on its water absorption and capillary water absorption, when used as a smoke filter, the fiber rod containing solid fiber filaments makes the smoke penetrating not strong enough

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