This paper reports an experimental investigation of the effect of repeated laundering on the comfort-related and low stress mechanical properties of polo shirt fabrics with and without wrinkle-free treatments. Comparisons are made of untreated fabrics, fabrics treated with a hydrophobic wrinkle-free treatment, and fabrics treated with a hydrophilic wrinkle-free treatment. The results show that a wrinkle-free treatment can reduce the adverse effects of washing on many low stress mechanical properties. In general, the surface water absorption rate, warm/cool feeling. and low-stress mechanical properties of wrinkle-free treated fabrics are more stable against repeated laundering, because untreated fabrics tend to shrink and become more compact. The extensibility of a wrinkle-free treated fabric decreases significantly after twelve washing cycles. Application of a hydrophilic softener in the wrinkle-free finish can improve the surface water absorption rate, but the durability of the hydrophilic softener to repeated laundering should be further improved to prevent deterioration of fabric properties after washing.
This paper reports an experimental investigation of comfort sensations of people wearing polo shirts with different garment treatments. Subjects are asked to rate their comfort sensations before and after exercising. Before exercise, overall discomfort is largely determined by tactile sensations ( e.g., itchiness and prickliness): after exercise. overall discomfort is mostly governed by moisture related sensations ( e.g., dampness and clinginess).
This paper reports an experimental investigation of the effect of garment size on perceived body size. The perceived body sizes of three Chinese men (thin, medium, and obese build) wearing different sizes of white T-shirts were assessed using Thompson and Gray's 1995 Nine-figural Scale in 1 (thinnest) to 9 (obese) grade and a newly-proposed method. Within the limit of commercially available T-shirt sizes, for thin and medium persons, perceived body sizes are bigger when wearing T-shirts of larger sizes. For an obese person, however, wearing a large size T-shirt tends to make him look thinner. The study also showed that the newly proposed comparative method is more reliable in comparing body size perception but without measuring the magnitude of the change in body-size grade. The figural scale and the comparative method can be complementary.
This study investigated the effect of garment size on perceived body size. The perceived body sizes of nine Chinese men, with Body Mass Index between 17.0 and 37.1 kg/m(2), wearing five sizes of white T-shirts were assessed using Thompson and Gray's Nine-figural Scale. Garment sizes on perceived body sizes were different for those of different Body Mass Index. A backpropagation neural net model was used to model the nonlinear relationship between the perceived body size and the body's BMI, body chest girth, and garment ease (difference between garment and body chest girth). When the BMI was less than 20, wearing larger-sized T-shirts tended to increase perceived body size. For large chest sizes and for taller persons (BMI of 20 to 28) large garments made the wearer look thinner. However, for small persons (BMI of 20 to 28) effect of garment size was relatively small. Obese persons (BMI of > 28), wearing garments too tight or too loose were perceived as larger. Minimum perceived body size was found for garment ease of 2 to 3 cm.
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