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首页> 外文期刊>Journal of Applied Polymer Science >Ultrasonic Sealing of Polyester and Spectra Fabrics Using Thermo Plastic Properties
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Ultrasonic Sealing of Polyester and Spectra Fabrics Using Thermo Plastic Properties

机译：利用热塑性特性对聚酯和光谱织物进行超声波密封

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摘要

A study of polyethylene terephthalate (PET) and spectra fabric's ultrasonic sealing (welding) potential was conducted using both continuous and discontinuous ultrasonic welding machines. The effects of two important welding parameters such as weld pressure and weld time were investigated on the fabric's bond strength. Depending on the thermal property of the polymer, a certain level of temperature rise during sealing is required to soften the fibers, to facilitate the development of rows of welding points between the fabric layers. This happens under the compaction due to weld pressure. The gaps between the points are so narrow that the rows appear to be a complete sealing of the layers. Excessive melting under weld pressure, to create melt bonding caused polymer degradation and poor bond strength. Scanning Electron Microcopy images and the temperature measurements at the fabric's interface were used to examine the bond locations of the fabric. Differential Scanning Calorimetry analyses of PET and spectra fabrics have been used to examine the thermal behavior of the ultrasonic sealed material. Adequate seam strength was achieved under certain conditions of sealing for both the fabrics using both continuous and discontinuous methods of operation.
机译：使用连续和不连续的超声波焊接机对聚对苯二甲酸乙二醇酯（PET）和Spectrum织物的超声波密封（焊接）潜力进行了研究。研究了两个重要的焊接参数（如焊接压力和焊接时间）对织物粘结强度的影响。根据聚合物的热性能，在密封过程中需要一定程度的温度升高以软化纤维，以促进在织物层之间形成多排焊接点。这是由于焊接压力在压实下发生的。点之间的间隙太窄，以致行似乎完全密封了层。在焊接压力下过度熔化会产生熔融键合，从而导致聚合物降解并降低键合强度。扫描电子显微镜图像和织物界面处的温度测量值用于检查织物的粘合位置。 PET和光谱织物的差示扫描量热分析已用于检查超声密封材料的热性能。使用连续和不连续的操作方法，在一定的密封条件下，两种织物都可获得足够的接缝强度。

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