Undercover for automobile and Preparing Method thereof
The present invention relates to a manufacturing method of an undercover for an automobile and the undercover and, more specifically, to a manufacturing method of an undercover for an automobile and the undercover to improve a sound-absorbing and sound-insulating effect and shock absorption to preve...
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Main Author | |
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Format | Patent |
Language | English Korean |
Published |
10.12.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention relates to a manufacturing method of an undercover for an automobile and the undercover and, more specifically, to a manufacturing method of an undercover for an automobile and the undercover to improve a sound-absorbing and sound-insulating effect and shock absorption to prevent a cover from being damaged due to the hitting to a speed bump while preventing the skin of a worker from being cut by a body contact of the worker. The manufacturing method of an undercover for an automobile of the present invention comprises: an upper layer manufacturing process of laminating a web made of short hemp fibers and short PP fibers on the upper portion of urethane foam, laminating a PP film on the upper side of the web to form an upper laminate, and needle-punching and bonding the laminate; a middle layer manufacturing process of laminating a web made of short hemp fibers, PP short fibers and carbon fibers between upper and lower PET nonwoven fabrics to form a middle laminate, and needle-punching and bonding the laminate; a lower layer manufacturing process of laminating an HDPE film and a PP film on the lower portion of the web made of short hemp fibers and short PP fibers to form a lower laminate, and needle-punching and bonding the laminate; and sequentially bonding the upper laminate, the middle laminate, and the lower laminate, bonding the same by needle punching, and then heat-compressing the same.
본 발명은 자동차용 언더커버의 제조방법 및 그 언더커버에 관한 것으로서 보다 상세하게는 작업자의 신체접촉에 의해 피부가 베이는 것이 방지되면서 흡음 및 차음 효과와 과속방지용 턱에 부딪혀 커버가 파손되는 것을 방지하도록 충격흡수가 향상되도록 한 자동차용 언더커버의 제조방법 및 그 언더커버에 관한 것인바, 본 발명은 자동차용 언더커버의 제조방법에 있어서, 우레탄폼의 상부에는 마 단섬유와 PP단섬유로 이루어진 웹이 적층되며 상기 웹의 상부쪽에는 PP필름이 적층되어 상층적층체를 형성시키고 니들펀칭하여 접합시키는 상층제조공정과; 상·하의 PET부직포 사이에 마 단섬유와 PP단섬유 및 탄소섬유로 이루어진 웹이 적층하여 중층적층체를 형성시키고 니들펀칭하여 접합시키는 중층제조공정과; 마 단섬유와 PP단섬유로 이루어진 웹의 하부에 HDPE필름과 PP필름을 적층하여 하층적층체를 형성시키고 니들펀칭하여 접합시키는 하층제조공정과; 상기 상층적층체와 중층적층체 및 하층적층체를 순차적으로 접층하여 니들펀칭으로 결합시킨 후 가열 압착하는 것에 그 특징이 있다. |
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Bibliography: | Application Number: KR20200092580 |