一种仿丙纶纱
The imitation polypropylene yarn prepared by interlacing I-shaped monofilaments and using POY technology solves the problems of poor anti-aging performance and heat dissipation of traditional yarns, achieving a firm feel and efficient heat dissipation, reducing production costs, and is suitable for products such as high-end mattress edge bands.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU HONGRANDA CHEMICAL FIBER CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional polypropylene and polyester yarns suffer from insufficient anti-aging properties and strength, poor heat dissipation, and high production costs. In particular, when making mattress edge bands, it is difficult to balance a firm feel with heat dissipation performance.
The design adopts a polypropylene yarn imitation design composed of several monofilaments with an I-shaped cross section. Adjacent monofilaments are interwoven and distributed in concentric circles on the spinneret to form multiple I-shaped filament bundles. It is prepared by POY process and twisting process. The I-shaped spinneret design increases the specific surface area and improves heat dissipation efficiency.
It achieves a firm feel under low F-number conditions while improving the yarn's heat dissipation performance and production efficiency, reducing production costs, and is suitable for products such as high-end mattress edge bands, with good cost performance and stability.
Smart Images
Figure CN224513720U_ABST
Abstract
Claims
1. A type of imitation polypropylene yarn, characterized in that: It is composed of several monofilaments with an I-shaped cross-section, with adjacent monofilaments interlaced. The I-shape includes a first horizontal section, a vertical section, and a second horizontal section. The first and second horizontal sections are parallel, while the vertical section is not parallel to the first horizontal section. One end of the vertical section connects to the first horizontal section, and the other end connects to the second horizontal section. The first and second horizontal sections of adjacent monofilaments are interlaced. The number of monofilaments in a single yarn is 25-30F, and the fiber fineness unit in a single yarn is 230-250D. The adjacent monofilaments are staggered, with the end of the first or second horizontal line portion of the monofilament adhering to the inner side of the first or second horizontal line portion of the adjacent monofilament; the end of the first or second horizontal line portion is arc-shaped, and both ends of the vertical line portion have concave arc-shaped reinforcing structures. The concave arc-shaped reinforcing structure of the vertical line portion is an arc-shaped structure that is concave inward along the vertical line portion. The lengths of the first and second horizontal line portions are equal; the length ratio of the first horizontal line portion to the vertical line portion is 1 to 2:1; and the length-to-width ratio of the first horizontal line portion is 7 to 8:
1.
2. A yarn according to claim 1, wherein: Both ends of the first horizontal line are semicircles, and the semicircles are semicircles of a standard circle. The center of the semicircle is located on the central axis of the first horizontal line. The diameter of the semicircle is equal to the width of the first horizontal line. The ratio of the width of the first horizontal line to the radius of the semicircle is 3.2 to 4:
1.
3. The polypropylene-like yarn as described in claim 1, characterized in that: All the monofilaments are extruded on the same spinneret along the direction parallel to the positioning groove. The spinneret holes on the spinneret are all I-shaped and arranged in concentric circles. The spinneret holes are evenly distributed on each layer of the circumference and are staggered.