Study of self-crimp polyester fibers

Abstract

Self-crimp polyester yarns were manufactured using a conjugated spinning process involving two parallel but attached fibers with different shrinkage properties. A theoretical model proposed by Denton proved to be very useful for predicting crimp potential. Maintaining identical or very similar melt viscosities of the two components was demonstrated to be very critical for obtaining a straight interface and eliminating the dog-legging problem. The crimp tests illustrate that the triangular shapes are superior to the round cross section. The optimum volume ratio for making a self-crimp bicomponent skein is 50/50. Moreover, the optimal fiber thickness is 8 denier per filament. Finally, this study found that the combination of PET/PTT outperformed that of PET/PBT and PET/CD in terms of crimp potential, crimp stability, and elastic recovery. This phenomenon is primarily attributed to the markedly different thermal shrinkages of PET and PTT. POLYM. ENG. SCI., 45:838 -845, 2005.

Effects of Fiber Crimp Configurations on the Face Texture of Knitted Fabrics Made with PTT/PET Bicomponent Fibers

“…Figure 6 shows a close-up image of the reversal point; distinct opposite direction spirals forming right-and left-handed helices could be clearly seen on both sides of the reversal point. The formation of reversal points had been attributed to the bicomponent fibers trying to eliminate torsional forces generated by the high spatial crimps in the axial direction in prior studies 7,8 . Although reversal points also occur in the untreated filament, they are difficult to observe, because they are too small and few frequent.…”

Three-dimensional crimped biodegradable poly(lactic acid) fibers prepared via melt spinning and controlled structural reorganization

“…The crimped mechanism of SSCF is mainly based on different shrinkage of the two components, which result from structural factors such as crystallization and orientation in semicrystalline polymers. [26][27][28] Here, the degree of crystallinity and orientation was measured by WAXS and sonic velocity.…”

Rancang Bangun Prototip Mesin Benang Bulky Portabel Dengan Metode Roda Gigi Crimp

“…Secara umum benang dapat dikategorikan menjadi beberapa jenis benang, yaitu benang dasar, benang hias, benang spiral dan benang bertekstur. 1,2 Benang tekstur adalah benang filamen dari serat sintetis yang bersifat termoplastik yang telah diproses sedemikian rupa sehingga sifat fisik dan permukaannya berubah. Misalnya menjadi rua (bulky), berjeratan (loops), berbentuk spiral (coils) dan berbentuk crinkle.…”