Wearable bra for measuring thermal resistance of bra
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A wearable and bra technology, applied in the field of bras, can solve the problems of inability to characterize the performance of fabrics, the inability of thermal mannequins to accurately measure heat, and the inability to measure heat more accurately, so as to achieve the effect of convenient movement and accurate data
Pending Publication Date: 2021-10-22
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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Problems solved by technology
[0005] Because bra products are usually composed of multiple layers and materials, and cannot be accurately characterized by the performance of fabrics
[0006] Bra products have different types of cups, such as: full cup, 1 / 2 cup, 3 / 4 cup, 5 / 8 cup, etc. The current thermal manikin cannot accurately measure the heat passing through various cups
Although there are thermal manikin products that can be used to measure women's clothing through a removable breast covering, they only simulate the female body shape and can't measure the heat passing through the bra more accurately.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Embodiment 1
[0033] A wearable bra for measuring the thermal resistance of the bra, comprising the following steps:
[0034] Wear the wearable electric heating bra on the mannequin, and then put on the bra to be tested. The heating part of the wearable electric heating bra can be adjusted according to the style of the bra, so that the heat passing through the bra can be accurately measured , and then calculate the thermal insulation index of the bra product, such as: Cro value;
[0035] The formula for calculating the Cro value is:
[0036]
[0037] In the formula:
[0038] R cl is the thermal resistance of the bra, clo;
[0039] A s is the area of the heated area covered by the bra to be tested, m 2 ;
[0040] t s is the area-weighted average temperature of the heated area covered by the bra to be tested, °C;
[0041] t a is ambient temperature, °C;
[0042] h d is the dry heat input power of the area covered by the bra to be tested, W;
[0043] R a is the thermal resist...
Embodiment 2
[0046] Wear the wearable electric heating bra on the mannequin, and then put on the bra to be tested. The heating part of the wearable electric heating bra can be adjusted according to the style of the bra, so that the heat passing through the bra can be accurately measured , and then calculate the thermal insulation index of the bra product, such as: thermal resistance, Cro value;
[0047]
[0048] In the formula:
[0049] R cl is the thermal resistance of the bra, clo;
[0050] A si is the area of the i-th heating area covered by the bra to be tested, m 2 ;
[0051] t si is the average temperature of the i-th heating area covered by the bra to be tested, °C;
[0052] t a is ambient temperature, °C;
[0053] h di is the dry heat input power of the i-th section heating area covered by the bra to be tested, W;
[0054] R a is the thermal resistance clo of the boundary layer air.
[0055]The more partitions, the more types of bras are suitable for measurement, b...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract
The invention discloses a wearable bra for measuring the thermal resistance of the bra, and the method comprises the following steps: wearing a wearable electric heating bra on a mannequin, then wearing a bra to be measured, and adjusting and setting the heated part of the wearable electric heating bra according to the style of a bra, so that the heat passing through the bra can be accurately measured, and a heat preservation index of the bra product is further calculated, such as a Crow value. The wearable bra for measuring the thermal resistance of the bra can be worn on a mannequin, then the bra to be tested is put on, and the thermal insulation performance is tested, so that the wearable electric heating bra is closer to the wearing state of a product than fabric testing, and the thermal insulation performance of the bra can be measured by utilizing the wearable electric heating bra, measuring the heat conduction quantity passing through the bra cups and calculating the thermal resistance. The test result is closer to the heat insulation state when a human body wears the bra, the data is more accurate, so that the seasonal environment suitable for the bra is determined, and the wearable electric heating bra is lighter and more convenient to move than a body warming dummy.
Description
technical field [0001] The invention relates to the field of bras, in particular to a wearable bra used for measuring the thermal resistance of the bra. Background technique [0002] At present, thermal dummies are usually used to measure the thermal insulation of clothing. But the thermal manikin is very heavy and inconvenient to move. [0003] Theoretical research and model making of thermal dummies in my country started relatively late, and my country began to pay attention to the development of thermal dummies only in the 1970s. The Military Equipment Research Institute of the General Logistics Department was the first batch of units that researched thermal dummies at that time. . In the 1970s, the Military Equipment Research Institute of the General Logistics Department successfully developed a constant temperature manikin, and in the 1980s, a variable temperature mannequin was developed, which was widely used in the development of various special clothing; since the 1...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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