Structure and property characterization of spunbonded filaments and webs using thermal analysis

Zhang, Dong; Sun, Qinwei; Bhat, Gajanan; Wadsworth, Larry C.

doi:10.1002/(sici)1097-4628(19980718)69:3<421::aid-app1>3.0.co;2-i

Cited by 5 publications

(4 citation statements)

References 1 publication

(1 reference statement)

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“…The results bond strength results match with the constant heat sealer results, reconfirming the trend of increased bond strength for finer fibers. An increase in crystallinity, birefringence, tensile strength, and modulus of the spunbond fiber with a decrease in diameter is reported in earlier studies 27. SEM images of fiber bundles bonded at different temperatures using the HTH2 sealer are shown in Figures 23.…”

Section: Resultssupporting

confidence: 60%

Thermal bonding of polypropylene films and fibers

Hegde

Bhat

Campbell

2008

J of Applied Polymer Sci

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The thermal bonding behavior of different grades of polypropylene was studied in this research. Initial bonding studies were done with polypropylene films of different grades of polymer with varying morphology, and the studies were extended to polypropylene fibers. Polypropylene fibers manufactured with different crosssections, deniers, polymer melt-flow rates, and different processing conditions were bonded under various conditions. The effect of film structure, properties, and bonding conditions on the bonding efficiency was studied by comparing the tensile strength of bonded films. Thermal bonding was carried for a range of temperatures covering poor, optimum, and over bonding. Changes taking place to the polymer in bond point and the original surface were analyzed using the SEM. Higher bond strength was observed in the vicinity of melting temperature and the strength reduced with a further increase in bonding temperature. The frequent failure point was observed at the bond edge crossover points where film undergoes maximum thickness transition. Lower pressure and shorter time were found to be appropriate for bonding. Films with lower orientation formed better bonds. The optimum bond strength and the optimum bonding temperature observed were different for different polymers. Fiber bond strength results were similar to the results observed in the case of films with respect to the bonding temperatures studied.

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Section: Resultssupporting

confidence: 60%

Thermal bonding of polypropylene films and fibers

Hegde

Bhat

Campbell

2008

J of Applied Polymer Sci

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“…Therefore, mechanical properties of PP fibers prepared by air drawing are selected to compare with those of PLA fibers obtained by air drawing. The b and " b of PP fibers ranged from 0.6 to 4.2cN/dtex, and from 180 to 534%, respectively, which was reported by Zhang et al 22 When the " b of PP fibers was similar to that of PLA fibers, the b of PP fibers also was small.…”

Section: Mechanical Propertiessupporting

confidence: 53%

Structure and mechanical property of polylactide fibers manufactured by air drawing

Liu

Sun

Xia

et al. 2015

Textile Research Journal

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Polylactide fibers were prepared by air drawing. The effects of mass throughput ( Q) and frequencies of electric machinery of drawing air ( fm) on the structure and mechanical properties of polylactide fibers are studied. With the increase of fm and the decrease of Q, the diameter of polylactide fiber decreases gradually. For a sample aged for less than 3 days, two glass transition temperatures ( Tg) are found, whereas for a sample aged for 30 days, only a single Tg appears. With the increase of fm, the crystallinity and crystalline orientation of polylactide fibers increase, which can restrict the physical aging. Therefore, polylactide fibers are relatively brittle when the fm is below 20 Hz. However, when fm reaches 30 Hz, elongation at break ( ɛb) of polylactide fiber increases rapidly to 1122%. With the further increase of fm, ɛb decreases and break stress ( σb) increases. In addition, physical aging can make ɛb decrease and σb increase.

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“…The peak melting temperature and enthalpy of melting for co-polymer are lower than those of the homo polymer. Therefore the bonding and processing temperatures of the co-polymer are lower than that of homo polymer [25][26][27]. Use of copolymer (with ethylene contents of 3-5%) relative to polypropylene shifts the brittle point (Tg) to a lower temperature, giving higher impact strength at a low temperatures and therefore lower fabric stiffness [26].…”

Section: Polymers Usedmentioning

confidence: 99%

“…TMA scan of the filaments shows that for the same primary air temperature the filaments become more stable with decreasing throughput. The morphology of the filaments spun at lower throughput is better developed than those with higher throughput because rheological conditions are more favorable for crystallization and orientation at lower throughputs [1,26,27].…”

Section: Throughput Ratementioning

confidence: 99%

Spun bonding Technology and Fabric Properties: a Review

Midha¹,

Dakuri²

2017

JTEFT

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The process of making spun bond fabrics combines the production of fabrics with the production of filaments. High process efficiencies and excellent properties of these fabrics have made them acceptable in different areas of application like civil engineering, medical and hygiene, automotive industry, shoe industry and packaging. Controlling the structure and properties of the fabric is a difficult task as there are several process parameters affecting fabric properties besides the structure and properties of the filaments. Several scattered studies explain the influence of process parameters on filament and fabric properties but lot of information on the fabric properties is missing. A comprehensive review of the spun bonding technique, fabric characteristics and the process parameters is presented in this paper. An understanding on this will help in optimizing the process parameters for producing desired properties in the fabric.

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Structure and property characterization of spunbonded filaments and webs using thermal analysis

Cited by 5 publications

References 1 publication

Thermal bonding of polypropylene films and fibers

Thermal bonding of polypropylene films and fibers

Structure and mechanical property of polylactide fibers manufactured by air drawing

Spun bonding Technology and Fabric Properties: a Review

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