Functional properties of pillows for sleeping
DOI:
https://doi.org/10.31617/2.2022(44)07Keywords:
pillows, comfort, properties of pillows, softness-firmness of pillows, filler, coefficient of surface density of the fillerAbstract
Introduction. The properties of pillows are determined by their functional, i.e., consumer properties, that determine their intended use as a consumer item. Since the purpose of bedding, in particular pillows, is to ensure a comfortable sleep for a person, functional properties are the most important.
Problem. The formation of an assortment of pillows indicates the need to study their functional properties, in particular, the perfection of the main function, i. e. the softness-hardness criterion.
The aim of the article is to study the functional properties of sleeping pillows, in particular, the calculation of the softness-hardness criterion.
Methods. The degree of softness-hardness of the pillows is evaluated according to standardized indicators: the strength and mass of the fillers, as well as the height of the pillows under load and without load. The research was conducted at the production enterprise of "Herd Billerbeck GmbH" LLC (Ukraine).
Results. The calculation of the pillow softness-hardness criterion is carried out according to the coefficient of surface density of feather-down, wool and synthetic fillers. The division is made into categories: soft; medium hardness; hard.
According to the experimental studies of the height of the pillow with different types of filler without load and after loading, it was determined that the strength of the filler directly affects the change in the shape of the pillow during operation.
Conclusions. It was experimentally established that the value of the criterion of softness- hardness of the pillow directly depends on the height of the product without and after loading, since the pillow can shrink significantly during sleep, or, on the contrary, maintain its height.
It is recommended that regulatory, trade, advertising documentation and information materials additionally indicate the category of softness-hardness of pillows depending on the coefficient of surface density of the filler, with the following division: soft, medium hardness and hard. It is advisable to divide pillows according to this criterion in order to develop the existing regulatory documentation for this type of products, which will facilitate the choice of this product by the consumer.
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Copyright (c) 2022 Halyna MYKHAILOVA, Andrii SLIZKOV, Valentyna OSIIEVSKA
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