Iris Publishers_Journal of Textile Science & Fashion Technology (JTSFT)

Scald Burn Protection of the Commercially Available Children’s Sleepwear

Abstract

Children’s sleepwear is often recalled from the consumer market due to non-conformance; however, scholarly articles auditing the thermal protection performance of commercially available children’s sleepwear are scarce. Moreover, the protection against hot liquid exposure, a prevalent cause of child burn injury, has never been studied. This study examines the integrity of the commercially available children’s sleepwear with Flammable Fabrics Act, and thermal protection performance against hot splash. Sleepwear knitted in different structures with different fiber compositions were selected and exposed to vertical flammability tester and hot liquid tester. A very poor splash protection was observed by all the fabrics under study. Although, all of the fabrics passed the vertical flammability test; dangerous molten polymer hazard posed by the synthetic polyester fabrics calls for a careful selection of fibers for this sophisticated class of apparel. A better protection performance could be envisioned should the fabrics were made rich of inherently flame-retardant fibers.

Keywords: Children’s sleepwear; Vertical flammability; Thermal protection; Scald (splash) protection; Jersey knit; Interlock knit; Modacrylic fiber


Introduction

Children’s sleepwear, as defined by the US consumer product safety commission (US CPSC), are the clothing sized above 9 months and up to size 14 that are primarily used for sleeping or sleeping related activities. US CPSC enforced children’s sleepwear safety regulations in Flammable Fabrics Act. According to the act, children’s sleepwear should either be snug fitted, or it must pass certain flammability test. The sleepwear standard was formulated to protect children from serious burn injury imitated from sleep ware or similar garments like pajamas, robes or nightgowns [1].

Although people from all age, gender, race, ethnicity, and socioeconomic status are susceptible to burn injury, the children are the most vulnerable class of people who suffer from burns [2]. Tragically, 24% of all burn injuries in United States (USA) occur in children, and burn deaths were the 3rd and 5th among all injury deaths in children aged 5-9, and 1-4 years respectively during the period of 2011-2015 [3]. Tragically, 24% of all burn injuries in United States (USA) occur in children, and burn deaths were the 3rd and 5th among all injury deaths in children aged 5-9, and 1-4 years respectively during the period of 2011-2015 [3-5]. Mcloughlin et al., in their article on sleepwear related burn injuries among children, reviewed the records of 678 burn injuries over 8 years period in a burn unit, and reported that more than 27% of sleepwear related injuries are scald injuries caused by hot liquids [6,7]. However, the scald protection of the children’s sleepwear has never been studied before [8].

Material parameters associated with flammability of fabrics such as (i) ease of ignition (ii) heat release rate (iii) total heat release (iv) flame propagation rate and (v) mechanism of heat transfer has been studied extensively [9]. Clothing made of natural fibers such as cotton poses sudden ignition hazard as they burn readily [10,11]. On the other hand, synthetics such as polyester introduce molten polymer hazard owing to their thermoplasticity [10]. It has been reported that hotter burning component (such as polyester) in a blend enhances the burning rate of the cooler (such as cotton) component, and the flame temperatures be the same as hotter component [12,13]. The danger of polyester-cotton blends’, [14]. Cotton knitted fabrics either employ inherently flameretardant fibers (such as modacrylic) in the blend to increase the limiting oxygen index (LOI) or being finished with synthetic flame retardants that can cause cancer in human body [15-17]. It is empirical that, fiber and fabric parameters need to be reconsidered to design a sleepwear especially for children.

Alarmingly, very often children’s sleepwear including nightgowns and pajama are recalled from the market by the suppliers for non-conforming to flammability standards. Very recently in 2017, Asherangel recalled 950 pcs of cotton sleepwear, Richie House recalled 1500 children’s 100% polyester robes, Sweet Bamboo recalled 500 children’s 50/50 polyester/viscose sleepwear. However, scholarly article auditing the commercially available children’s sleepwear is very limited. This research, therefore, aims to audit the integrity of the commercially available children’s sleepwear to the FFA, and to examine the scald protection for the first time against hot liquid splash.

Commercially available snug fitting children’s sleepwear were purchased from stores and online and selected for this study based on their material properties including fiber composition, structure, and fabric weight. Their physical, durability, and comfort related properties were determined. Integrity with the FFA was evaluated by vertical flammability tester. Protection against scald injury was evaluated by using hot liquid splash tester. This result would provide insight to better understand the protection performance provided by children’s sleepwear, especially in case of exposure to hot water splash.

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