In this study, we evaluated warmth retention ability of polyurethane foam (non-laminated and laminated) plying with fabrics. The warmth retention ratio, measured by KES-F7, was used for expressing the thermal property of plied samples. Experimental results revealed that the warmth retention ratio of samples that were plied with fabrics were higher than the foams in plain (i.e. without plying with fabric). For non-laminated foams, the fabrics had generally increased the warmth retention ratio by 10%. For laminated foams, the increase was about 4 to 5% in the warm retention ratio. By comparing the warmth retention ratio between the non-laminated foams and laminated foams, laminated foams have higher heat retention power. Being a close-to-skin garment, the air permeability is an important factor to determine their usage. Thus, we examined the air permeability of the different samples and the results were discussed properly.

A natural dye extracted from lac was applied to a silk fabric by the use of pad-dry technique under different conditions. The dyeing properties were evaluated by measuring K/S and CIELAB values. In addition, the different fastness properties were evaluated. The effect of dyes at different mordant concentration levels with respect to their colour strength was also studied. Silk fabrics dyed with lac extract showed a light pink shade, while those dyed with alum and stannous chloride pinkish-red colour. Silk substrates dyed with CuSO4 gave a purple red colour, while those dyed with FeSO4 had a reddish-gray colour. The fastness properties ranged from fair to good, while washing fastness was poor level.

The aim of this research is to establish a pottery production process from volcanic rock powder in Ban Kruat District, Thailand under the concept of the green economy operation by using research tools such as structured interviews as well as Exploratory Factor Analysis (EFA) and Multiple Regression Analysis. Moreover, it was found that the mixing ratios of pumice powder at 50%, local soil at 20% and kaolin at 30% with a shrinkage rate of 14%, water absorption of 1.88%, and a hardness of 304.75 kg/cm², having been fired at a temperature of 1,190 °C is considered a suitable ratio. In the same way, when transferring the production process of new pottery to the community in Ban Kruat District for production and distribution with the evaluation of consumer satisfaction, it can be summarized that there are six factors that affect consumer satisfaction: 1) Local Identity, 2) Uniqueness of the Materials, 3) Identity from Khmer Art Influence, 4) Factors in Lifestyle and Local Beliefs, 5) Functional Factors that Correspond to the Era, and 6) Factors of Current Market Conditions. Thus, these six factors have a predictive value of 61.365 (KMO =.533), and the results are as follows: F = 88.808, P = 0.000, R = 0.858, R2 = 0.736, Adj R2 = 0.728, SEE = 0.320, Durbin-Watson = 1.919. Therefore, the regression equation is defined as y ̂=-2.528+.345(X_1 )+.277(X_2 )+.287(X_3 )+.354(X_4 )+.373(X_5 )+.392(X_6 ), and it was concluded that all six factors affect consumer satisfaction towards pottery made from new types of volcanic rock powder with statistical significance at .01.   Received: 28 January 2023 / Accepted: 14 April 2023 / Published: 5 May 2023

Natural dye extracted from the longan leaves was applied to a silk fabric by an exhaustion dyeing process. The dyeing was conducted with and without metallic salt mordants using pre-mordanting. It was observed that with an increase in the dye concentration, the ultraviolet (UV) protection factor (UPF) values ranged between good and very good for the silk fabric. In addition, a darker color, such as that provided by a CuSO4 and FeSO4 mordant, gave better protection because of higher UV absorption. The results confirmed that natural dyes from longan leaf extract with metal mordants have potential applications in fabric dyeing and in producing UV-protective silk fabrics.

Warp yarn of cotton samples were printed with pigment dyes has been investigated. The printed warp yarn was weaved by using white cotton yarn as a weft yarn. The physical properties were evaluated to testing in tensile strength and tearing strength of weaved samples, the test were determined according to ISO standard. The results showed that the tensile strength of three samples are shown to be in the range between 210 and 342 Newtons whereas tearing strength was in the range between 30 and 110 Newtons. The results indicated that the properties of printed samples (handling) were good to very good level.