CN112964624A - Bra moisture permeability testing device and testing method thereof - Google Patents
Bra moisture permeability testing device and testing method thereof Download PDFInfo
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- CN112964624A CN112964624A CN202110475838.6A CN202110475838A CN112964624A CN 112964624 A CN112964624 A CN 112964624A CN 202110475838 A CN202110475838 A CN 202110475838A CN 112964624 A CN112964624 A CN 112964624A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
Abstract
The invention relates to the field of female underwear, and provides a bra moisture permeability testing device and a testing method thereof, wherein the bra moisture permeability testing device comprises a chest model and a climate box; the chest model supporting equipment is used for placing the chest model, and the constant temperature and humidity control device is used for controlling the interior of the climate box to be in a constant temperature and humidity environment; the chest model includes a chest body divided into a plurality of sweating regions, where each sweating region can independently simulate human sweating. Therefore, the sweating part can be adjusted and arranged according to the style of the corsage, the whole or partial sweating of the chest model is realized, the moisture permeability test of the bra covering only partial human body is met, the moisture vapor quantity passing through the bra cup is measured by utilizing the chest model structure, the test result is closer to the moisture permeability state when the bra cup is worn by the human body, and the data is more accurate.
Description
Technical Field
The invention relates to the field of female underwear, in particular to a bra moisture permeability testing device and a testing method thereof.
Background
The moisture permeability index of the garment is that the moisture quantity of the garment is higher under the conditions of unit time, unit area of unit time or unit water vapor pressure difference of unit area of unit time, and the moisture permeability of the garment is better when the moisture quantity is higher.
The moisture permeability of the existing clothes can be characterized by two modes, namely, the moisture permeability of the fabric forming the clothes is measured by using a fabric moisture permeability tester; secondly, the moisture permeability of the clothes is measured by utilizing the warm-body dummy.
The moisture permeability of the fabric forming the garment is measured by using a fabric moisture permeability tester, and common indexes comprise moisture permeability and moisture permeability. Moisture permeability (WVT): the two sides of the textile fabric vertically pass through the mass of the water vapor of the sample per unit area within a specified time under a specified test environment condition. In grams per square meter hour (g/m)2H) or grams per square meter 24 hours (g/m)224 h). Moisture permeability (WVP): the quality of the water vapor vertically passing through a sample in unit area is determined in a set time under the set test environment condition and the unit water vapor pressure difference on two sides of the textile fabric. In grams per square meter pascal hours (g/m)2Pa.h).
The common fabric moisture permeability detection method comprises the following steps:
(1) evaporation method (positive cup water method)
Injecting water with the same temperature as the test condition by using a measuring cylinder; the amount of water is required according to various standards. Mounting a test sample on a test cup; and placing the positive cup in a testing instrument, weighing after balancing for a period of time to obtain an initial weight, and weighing again after testing for a period of time. And calculating the moisture permeability or the moisture permeability of the sample by utilizing the mass difference of the secondary weighing. The main standards are GB/T1204.2 method A, ASTM E96 method B \ E, JIS L1099A-2, BS 7209.
(2) Evaporation method (inverted cup water method)
Injecting water with the same temperature as the test condition by using a measuring cylinder; the amount of water is required according to various standards. The mouth of the moisture permeable cup is sealed by a polytetrafluoroethylene microporous film, the fabric sample is covered on the film, and the cup is placed in a test instrument. After balancing for a period of time, weighing to obtain an initial weight, and after testing for a period of time, weighing again. And calculating the moisture permeability or the moisture permeability of the sample by utilizing the mass difference of the secondary weighing. The main standards are GB/T12704.2 method B, ASTM E96 method BW.
(3) Desiccant process
Drying hygroscopic desiccant (anhydrous calcium chloride) particles (0.63-2.5 mm) in a 160 ℃ drying oven for 3h to keep the desiccant dry by 100%. The desiccant was placed in the test cup so that it was about 4mm below the sample. Placing the sample positive cup in a testing instrument; after a test conditioning time of about 1 hour, weigh, and after a test period, weigh again. And calculating the moisture permeability or the moisture permeability of the sample by using the weight difference of the secondary weighing. The main standards are GB/T12704.1, ASTM E96 method A \ C \ E, JIS L1099A-1.
The moisture permeability of the clothes is measured by utilizing the warm-body dummy, and the measurement principle is as follows: firstly, measuring the total thermal resistance of the air of the clothing and the boundary layer, and recording the heating power H required for keeping the surface temperature of the dummy constant in the measuring process of the measured thermal resistanced. After the dummy was allowed to sweat and the system was equilibrated, the power H required to heat the dummy to maintain the surface temperature constant at that time was measured. This power consists of sensible and latent heat, and thus, the heat of evaporation H through the garmente＝H-Hd. Moisture permeability index i of clothingmCalculated using the following formula:
in the formula, RtIs the total thermal resistance value of the garment and boundary layer air, clo; psSaturated water vapor pressure at the temperature of the skin of the warm-body dummy, mmHg; paAmbient water vapor pressure, mmHg; heW/m of heat dissipation by evaporation for a thermal manikin2(ii) a S is a constant, 2.2 ℃/mmHg.
However, since most of bra products are made of multiple materials and multi-layer structures, the moisture permeability of a single fabric cannot represent the moisture permeability of the final bra product, and the moisture permeability of the garment cannot be completely and accurately represented only by measuring the moisture permeability of the fabric forming the garment, because the moisture permeability of the garment is also affected by the style and structure of the garment to a great extent; the body warming sweating dummy can measure the moisture permeability of the clothes, but because the sweating body warming dummy mostly has the general sweating, most of the measurement objects are the conventional clothes or the matching combination of a plurality of clothes which cover a larger area of the human body, and for the special clothes which only cover part of the human body, such as: the moisture permeability of the garment cannot be accurately measured by the bra. Therefore, at present, two ways for evaluating the moisture permeability of the clothes cannot accurately represent the moisture permeability of the female bra.
Disclosure of Invention
Therefore, aiming at the technical problems in the prior art, the invention provides a device special for testing the moisture permeability of a bra, which is mainly applied to testing the moisture permeability of a female bra. The device includes the chest platform of climatic chamber and various models, during the test, the chest platform is worn the brassiere back that corresponds the model, place it in the climatic chamber of constant temperature, humidity, and specific wind speed, after a period of time, according to the weight change around chest platform test, calculate the moisture permeability of brassiere, and then calculate the moisture permeability index of brassiere, unit time promptly, under unit time unit area or unit time unit area unit vapor pressure difference's the condition, the vapor flow that sees through the brassiere is more, it is better to explain the moisture permeability of brassiere.
Specifically, the method is mainly realized by the following technical scheme:
a bra moisture permeability testing device comprises:
chest models and climate boxes;
the chest model supporting equipment is used for placing the chest model, and the constant temperature and humidity control device is used for controlling the interior of the climate box to be in a constant temperature and humidity environment;
the chest model includes a chest body divided into a plurality of sweating regions, where each sweating region can independently simulate human sweating.
Preferably, the chest body has a polygonal honeycomb structure.
Preferably, a high water absorbent material is provided inside the breast main body of the polygonal honeycomb structure.
Preferably, the chest body is a cavity structure.
Preferably, an electric heating unit and a temperature sensor are disposed on the surface and/or inside the chest model.
Preferably, the chest body is made up of an arrangement of several polygonal cylindrical blocks, wherein the material inside each polygonal cylindrical block is exchangeable.
A bra moisture permeability test method utilizes any one of the bra moisture permeability test devices to test the moisture permeability of the bra.
The invention carries out the moisture permeability test by wearing the bra by the chest model, which is closer to the wearing state of the product than the fabric test, and the test is more convenient, meanwhile, the chest model structure of the invention is utilized to simulate the sweating by regions instead of the whole region of the chest model, thereby avoiding the influence of the clothing style structure, being capable of completely and accurately representing the moisture permeability of the female bra, further measuring the water vapor amount passing through the bra cup, and the test result is closer to the moisture permeability state when the human body wears, and the data is more accurate. Can provide support for a large number of underwear manufacturers in China and provide support and service for underwear enterprises to research and develop bra products comfortable to wear, thereby better providing more comfortable bra products for women.
Drawings
1. FIG. 1 is a schematic structural view of a moisture permeability testing apparatus for a brassiere according to an embodiment of the present invention;
2. fig. 2 is a three-dimensional view of a breast model of a quadrangular honeycomb structure provided in an embodiment of the present invention, in which (a) is a front view, (b) is a rear view, and (c) is a right side view.
Detailed Description
In order to make the core idea of the present invention more clearly understood, the following detailed description will be made with reference to the accompanying drawings.
The traditional method for testing the moisture permeability of the clothes cannot completely and accurately represent the moisture permeability of the clothes only by measuring the moisture permeability of the fabric forming the clothes, and the moisture permeability of the clothes is also influenced by the style structure of the clothes to a great extent, so that the moisture permeability of the female bra cannot be accurately measured and represented. Therefore, the invention discloses a bra moisture permeability testing device which is mainly applied to measuring the moisture permeability of a female bra.
Example one
The invention discloses a bra moisture permeability testing device, which specifically comprises a chest model and a climate box as shown in figure 1.
When the moisture permeability of the bra is tested, the bra with the corresponding model is worn on the corresponding or proper model of the chest model, and then the chest model with the bra to be tested is placed on the chest model supporting equipment; the constant temperature and humidity control device specifically comprises heating equipment, humidifying equipment, a temperature sensor, a humidity sensor and a controller, wherein when the temperature sensor detects that the temperature in the climate box is lower than a preset temperature in real time, the controller controls the heating equipment to be started, otherwise, the controller controls the heating equipment to be closed, when the humidity sensor detects that the humidity in the climate box is lower than a preset humidity in real time, the controller controls the humidifying equipment to be started, and otherwise, the controller controls the humidifying equipment to be closed; therefore, the constant temperature and humidity control device is used for controlling the interior of the climate box to be always in a preset constant temperature and humidity environment, wherein the preset temperature and the preset humidity can be a specific temperature value and humidity value, and can also be a temperature value range and humidity value range, and can be set according to an actual application scene, and the embodiment of the invention is not particularly limited. The fan can also be added in the climatic box for cooling down with higher speed and humidity fall, and guarantee that temperature, humidity are even in the climatic box, the rotational speed of fan is controlled according to predetermined rotational speed by the controller, and wherein, the direction that the climatic box ventilates can be adjusted as required, can be: from top, bottom, front, back, left, or right. For example, the test environmental parameters for controlling the climate box by the constant temperature and humidity control device are as follows: the temperature is 20-40 ℃, the relative humidity is 0-100%, and the wind speed is 0-3 m/s.
The chest model includes a chest body divided into a plurality of sweating regions, where each sweating region can independently simulate human sweating. The chest main part is of a polygonal honeycomb structure, when moisture permeability of the bra is tested, distilled water is injected into the polygonal honeycomb structure of the corresponding area according to the part to be tested of the bra so as to simulate sweating of a human body of the part area, the area of the sweating area is equal to the sum of the areas of the polygonal structures injected with the distilled water, and then the corresponding type or the proper bra is worn on the chest model. The chest model can be provided with various models, and the chest model with a proper size can be selected according to the requirement during measurement so as to be used for measuring bra products with various models. For different types of bras, such as: full cups, 1/2 cups, 3/4 cups, 5/8 cups, etc., the sweating position and area of the breast model can be set as required. Therefore, in order to more accurately measure the moisture permeability of the bras of different types, the embodiment of the invention can simulate sweating by regions according to the types of the bras instead of simulating sweating by the whole region of the breast model, thereby avoiding the influence of the style structure of the garment and completely and accurately representing the moisture permeability of the female bras. The main body part of the chest model is of a polygonal honeycomb structure, the polygon can be a triangle, a quadrangle, a pentagon, a hexagon and the like, and as shown in fig. 2, the breast model is a three-dimensional view of the chest model with the quadrangular honeycomb structure.
Then the chest model injected with distilled water is put into a climatic chamber, after a period of testing time (such as interval of 1h, 2h, 4h or 24h), the moisture permeability of the bra is calculated according to the weight change of the chest model before and after the testing interval time, and further the moisture permeability index (comprising moisture permeability and moisture permeability) of the bra, namely the moisture content of the bra under the condition of unit time, unit area of unit time or unit water-vapor pressure difference of unit area of unit time, the more the moisture content of the bra is, the better the moisture permeability of the bra is. It should be noted that, before the bra is placed in the breast model, corresponding testing parameters (constant temperature and humidity environment) required by the climate box should be set, and after the constant temperature and humidity environment is stable, the moisture permeability test of the bra can be started. It should be noted that when measuring latent sweat evaporation, the surface of the breast model may be covered with a waterproof moisture-permeable film such as: a polytetrafluoroethylene microporous film; when evaporation of perspiration is measured, no material is covered.
The embodiment of the invention adopts a weighing method to calculate the water vapor amount penetrating through the bra, and particularly, the moisture permeability WVT of the bra is calculated according to a formula (1):
in the formula: m is the change in mass (weight) of the breast model over the test time interval, and g, A is the sweat area (i.e. the sum of the areas of the sides of the honeycomb structure filled with distilled water) in m2And t is the test time in h.
Calculating the moisture permeability WVP of the bra according to the formula (2):
wherein, the delta P is the pressure difference of water vapor at the inner side and the outer side of the bra cup, and the unit is Pa; pBThe saturated water vapor pressure at the test temperature is given in Pa; RH (relative humidity)1Relative humidity in the climatic chamber,%, at the time of testing; RH (relative humidity)2Relative temperature of the sweating surface of the breast model,%.
Compared with the traditional clothes moisture permeability testing device, the invention has the advantages that: the invention can wear the bra through the breast model to test the moisture permeability, which is closer to the wearing state of the product than the fabric test and more convenient to test, and simultaneously utilizes the breast model structure of the invention to simulate the sweating by regions instead of the whole region of the breast model, thereby avoiding the influence of the clothing style structure, being capable of completely and accurately representing the moisture permeability of the female bra, measuring the water vapor amount passing through the bra cup, and leading the test result to be closer to the moisture permeability state when the human body wears, and leading the data to be more accurate. Can provide support for a large number of underwear manufacturers in China and provide support and service for underwear enterprises to research and develop bra products comfortable to wear, thereby better providing more comfortable bra products for women.
In a preferred embodiment, a high water absorbent material, such as sponge, is provided inside the main body of the breast of the polygonal honeycomb structure. The high water absorption material is filled in the chest main body of the polygonal honeycomb structure so that when distilled water is injected into a corresponding test area of the polygonal honeycomb structure, the polygonal honeycomb structure has a better water absorption effect, and can better simulate the effect of human body sweating, so that the effect of the moisture permeability test of the bra is better, and the result is more accurate.
In a preferred embodiment, an electric heating unit, a temperature sensor and a chest model controller are arranged on the surface and/or inside of the chest model, the electric heating unit and the temperature sensor are respectively connected with the chest model controller, when the temperature sensor detects that the temperature of the chest model is lower than a preset temperature value in real time, the chest model controller controls the electric heating unit to be started for heating, and when the temperature sensor detects that the temperature of the chest model is higher than the preset temperature value in real time, the chest model controller controls the switch of the electric heating unit to be switched off, the heating is stopped, so that the chest model performs temperature simulation while simulating human body sweating, and the temperature simulation range can be 20-40 ℃. Set up like this, be the human surface temperature state when the state when making the measurement more is close human dress brassiere, make the more accurate of brassiere moisture permeability test.
Example two
The invention also discloses another bra moisture permeability testing device, which specifically comprises a chest model and a climate box as shown in figure 1.
When the moisture permeability of the bra is tested, the bra with the corresponding model is worn on the corresponding or proper model of the chest model, and then the chest model with the bra to be tested is placed on the chest model supporting equipment; the constant temperature and humidity control device specifically comprises heating equipment, humidifying equipment, a temperature sensor, a humidity sensor and a controller, wherein when the temperature sensor detects that the temperature in the climate box is lower than a preset temperature in real time, the controller controls the heating equipment to be started, otherwise, the controller controls the heating equipment to be closed, when the humidity sensor detects that the humidity in the climate box is lower than a preset humidity in real time, the controller controls the humidifying equipment to be started, and otherwise, the controller controls the humidifying equipment to be closed; therefore, the constant temperature and humidity control device is used for controlling the interior of the climate box to be always in a preset constant temperature and humidity environment, wherein the preset temperature and the preset humidity can be a specific temperature value and humidity value, and can also be a temperature value range and humidity value range, and can be set according to an actual application scene, and the embodiment of the invention is not particularly limited. The fan can also be added in the climatic box for cooling down with higher speed and humidity fall, and guarantee that temperature, humidity are even in the climatic box, the rotational speed of fan is controlled according to predetermined rotational speed by the controller, and wherein, the direction that the climatic box ventilates can be adjusted as required, can be: from top, bottom, front, back, left, or right. For example, the test environmental parameters for controlling the climate box by the constant temperature and humidity control device are as follows: the temperature is 20-40 ℃, the relative humidity is 0-100%, and the wind speed is 0-3 m/s.
The chest model includes a chest body divided into a plurality of sweating regions, where each sweating region can independently simulate human sweating. Wherein the chest main body is formed by arranging a plurality of polygonal column-shaped block structures, wherein the material in each polygonal column-shaped block structure can be replaced, the material in each polygonal column-shaped block structure can be high water absorption material or non-water absorption material, when testing the moisture permeability of the bra, the material inside the corresponding polygonal column-shaped block structure is replaced by the high water absorption material according to the part of the bra to be tested, the material inside the polygonal column-shaped block structure corresponding to the part which does not need to be tested is replaced by the non-water-absorbing material, and it needs to be noted that before replacement, the high-water-absorbing material is soaked in distilled water for wetting (or a proper amount of distilled water is injected into the high-water-absorbing material), so as to simulate the human body sweating of the corresponding chest part area of the polygonal column-shaped block structure, and the area of the sweating area is equal to the sum of the areas of the top surfaces of the polygonal column-shaped block structures which are replaced by high water absorption materials; a corresponding model or suitable brassiere is then worn over the chest model. The chest model can be provided with various models, and the chest model with a proper size can be selected according to the requirement during measurement so as to be used for measuring bra products with various models. For different types of bras, such as: full cups, 1/2 cups, 3/4 cups, 5/8 cups, etc., the sweating position and area of the breast model can be set as required. Therefore, in order to more accurately measure the moisture permeability of the bras of different types, the embodiment of the invention can simulate sweating by regions according to the types of the bras instead of simulating sweating by the whole region of the breast model, thereby avoiding the influence of the style structure of the garment and completely and accurately representing the moisture permeability of the female bras.
Then the breast model with the polygonal column block structure, into which distilled water is injected or soaked, is placed in a climate box, after a period of testing time (such as interval of 1h, 2h, 4h or 24h), the moisture permeability of the bra is calculated according to the weight change of the breast model before and after the interval time, and further the moisture permeability index (including moisture permeability and moisture permeability) of the bra, namely the moisture amount of the bra under the conditions of unit time, unit area of unit time or unit area of unit time and unit area of unit water-vapor pressure difference, the more the moisture amount of the bra, the better the moisture permeability of the bra. It should be noted that, before the bra is placed in the breast model, corresponding testing parameters (constant temperature and humidity environment) required by the climate box should be set, and after the constant temperature and humidity environment is stable, the moisture permeability test of the bra can be started. It should be noted that when measuring latent sweat evaporation, the surface of the breast model may be covered with a waterproof moisture-permeable film such as: a polytetrafluoroethylene microporous film; when evaporation of perspiration is measured, no material is covered.
In the embodiment of the invention, the water vapor amount penetrating through the bra is calculated by adopting a weighing method, and the specific implementation mode can refer to the embodiment and is not described again.
Compared with the traditional clothes moisture permeability testing device, the invention has the advantages that: the invention can wear the bra through the breast model to test the moisture permeability, which is closer to the wearing state of the product than the fabric test and more convenient to test, and simultaneously utilizes the breast model structure of the invention to simulate the sweating by regions instead of the whole region of the breast model, thereby avoiding the influence of the clothing style structure, being capable of completely and accurately representing the moisture permeability of the female bra, measuring the water vapor amount passing through the bra cup, and leading the test result to be closer to the moisture permeability state when the human body wears, and leading the data to be more accurate. Can provide support for a large number of underwear manufacturers in China and provide support and service for underwear enterprises to research and develop bra products comfortable to wear, thereby better providing more comfortable bra products for women.
In a preferred embodiment, an electric heating unit, a temperature sensor and a chest model controller are arranged on the surface and/or inside of the chest model, the electric heating unit and the temperature sensor are respectively connected with the chest model controller, when the temperature sensor detects that the temperature of the chest model is lower than a preset temperature value in real time, the chest model controller controls the electric heating unit to be started for heating, and when the temperature sensor detects that the temperature of the chest model is higher than the preset temperature value in real time, the chest model controller controls the switch of the electric heating unit to be switched off, the heating is stopped, so that the chest model performs temperature simulation while simulating human body sweating, and the temperature simulation range can be 20-40 ℃. Set up like this, be the human surface temperature state when the state when making the measurement more is close human dress brassiere, make the more accurate of brassiere moisture permeability test.
EXAMPLE III
The invention also discloses another bra moisture permeability testing device, which specifically comprises a chest model and a climate box as shown in figure 1.
When the moisture permeability of the bra is tested, the bra with the corresponding model is worn on the corresponding or proper model of the chest model, and then the chest model with the bra to be tested is placed on the chest model supporting equipment; the constant temperature and humidity control device specifically comprises heating equipment, humidifying equipment, a temperature sensor, a humidity sensor and a controller, wherein when the temperature sensor detects that the temperature in the climate box is lower than a preset temperature in real time, the controller controls the heating equipment to be started, otherwise, the controller controls the heating equipment to be closed, when the humidity sensor detects that the humidity in the climate box is lower than a preset humidity in real time, the controller controls the humidifying equipment to be started, and otherwise, the controller controls the humidifying equipment to be closed; therefore, the constant temperature and humidity control device is used for controlling the interior of the climate box to be always in a preset constant temperature and humidity environment, wherein the preset temperature and the preset humidity can be a specific temperature value and humidity value, and can also be a temperature value range and humidity value range, and can be set according to an actual application scene, and the embodiment of the invention is not particularly limited. The fan can also be added in the climatic box for cooling down with higher speed and humidity fall, and guarantee that temperature, humidity are even in the climatic box, the rotational speed of fan is controlled according to predetermined rotational speed by the controller, and wherein, the direction that the climatic box ventilates can be adjusted as required, can be: from top, bottom, front, back, left, or right. For example, the test environmental parameters for controlling the climate box by the constant temperature and humidity control device are as follows: the temperature is 20-40 ℃, the relative humidity is 0-100%, and the wind speed is 0-3 m/s.
The chest model includes a chest main body divided into a plurality of regions for measuring moisture permeation amount, wherein each region can independently measure moisture permeation amount. Wherein the inside cavity structure that is of chest main part, the surface is polygon honeycomb structure, when testing brassiere moisture permeability, according to the position that the brassiere needs the test, adds the drier in the polygon honeycomb structure of the test area that corresponds the brassiere, if: calcium chloride. In a preferred embodiment, after the bathing agent is added into the polygonal honeycomb structure corresponding to the test area, the surface of the polygonal honeycomb structure is further covered with a waterproof moisture-permeable film, such as: a polytetrafluoroethylene microporous film to simulate the moisture permeation process in the region of the site. The area of the moisture permeable zone was measured to be equal to the sum of the areas of the polygons in the honeycomb structure to which the bathing agent was added. A corresponding model or suitable brassiere is then worn over the chest model. The chest model can be provided with various models, and the chest model with a proper size can be selected according to the requirement during measurement so as to be used for measuring bra products with various models. For different types of bras, such as: full cup, 1/2 cup, 3/4 cup, 5/8 cup, etc., the position and area of measuring moisture permeability of the breast model can be set as required. Therefore, in order to more accurately measure the moisture permeability of the bras of different types, the breast model can be set for moisture permeability measurement in different areas according to the types of the bras instead of the whole area of the breast model, so that the influence of the style structure of the garment is avoided, and the moisture permeability of the bra of women can be completely and accurately represented. The main body part of the chest model is a polygonal honeycomb structure, the polygon can be a triangle, a quadrangle, a pentagon, a hexagon and the like, as shown in fig. 2, the chest model is a three-dimensional view of the chest model with the quadrangular honeycomb structure, and it should be noted that the difference from the first embodiment is that the chest model in the embodiment of the invention has a cavity inside the chest main body, is not filled with any material or high water absorption material in advance, and the bathing agent is added into the polygonal honeycomb structure of the part corresponding to the area to be tested so as to measure the moisture permeability of the specific area of the chest when the moisture permeability is tested. The procedure and implementation of the other tests were the same as in example one.
Then the chest model injected with distilled water is put into a climatic chamber, after a period of testing time (such as interval of 1h, 2h, 4h or 24h), the moisture permeability of the bra is calculated according to the weight change of the chest model before and after the testing interval time, and further the moisture permeability index (comprising moisture permeability and moisture permeability) of the bra, namely the moisture content of the bra under the condition of unit time, unit area of unit time or unit water-vapor pressure difference of unit area of unit time, the more the moisture content of the bra is, the better the moisture permeability of the bra is. It should be noted that, before the bra is placed in the breast model, corresponding testing parameters (constant temperature and humidity environment) required by the climate box should be set, and after the constant temperature and humidity environment is stable, the moisture permeability test of the bra can be started. It should be noted that when measuring latent sweat evaporation, the surface of the breast model may be covered with a waterproof moisture-permeable film such as: a polytetrafluoroethylene microporous film; when evaporation of perspiration is measured, no material is covered.
In the embodiment of the invention, the water vapor amount penetrating through the bra is calculated by adopting a weighing method, and the specific implementation mode can refer to the embodiment and is not described again.
Compared with the traditional clothes moisture permeability testing device, the invention has the advantages that: the invention can wear the bra through the breast model to test the moisture permeability, which is closer to the wearing state of the product than the fabric test and more convenient to test, and simultaneously, the breast model structure of the invention is utilized to simulate the arrangement of the sweat or moisture permeability measuring area by areas instead of simulating the sweat or measuring in the whole area of the breast model, thereby avoiding the influence of the clothing style structure, being capable of completely and accurately representing the moisture permeability of the female bra, measuring the water vapor amount passing through the bra cup, and the test result is closer to the moisture permeability state when the female bra is worn, and the data is more accurate. Can provide support for a large number of underwear manufacturers in China and provide support and service for underwear enterprises to research and develop bra products comfortable to wear, thereby better providing more comfortable bra products for women.
In a preferred embodiment, an electric heating unit, a temperature sensor and a chest model controller are arranged on the surface and/or inside of the chest model, the electric heating unit and the temperature sensor are respectively connected with the chest model controller, when the temperature sensor detects that the temperature of the chest model is lower than a preset temperature value in real time, the chest model controller controls the electric heating unit to be started for heating, and when the temperature sensor detects that the temperature of the chest model is higher than the preset temperature value in real time, the chest model controller controls the switch of the electric heating unit to be switched off, the heating is stopped, so that the chest model performs temperature simulation while simulating human body sweating, and the temperature simulation range can be 20-40 ℃. Set up like this, be the human surface temperature state when the state when making the measurement more is close human dress brassiere, make the more accurate of brassiere moisture permeability test.
Example four
The embodiment of the invention provides a method for testing moisture permeability of a bra, which is used for testing the moisture permeability of the bra by using the device for testing the moisture permeability of the bra, and the specific method comprises the following steps: the method comprises the steps of setting corresponding testing parameters (constant temperature and constant humidity environment) required by a climate box, after the constant temperature and constant humidity environment is stable, wearing a corresponding type or a suitable bra on a chest model according to any one of the embodiments, placing the bra in the climate box with the set corresponding testing parameters, testing the weight change of the bra before and after the interval time according to the chest model after the interval time, calculating the moisture permeability of the bra, and further calculating the moisture permeability index of the bra.
Compared with the traditional moisture permeability test method, the embodiment of the invention has the advantages that the bra is worn by the breast model to test the moisture permeability, the wearing state of the product is closer than that of a fabric, the test is more convenient, meanwhile, the breast model structure is utilized to simulate sweating by regions instead of simulating sweating by the whole region of the breast model, the influence of the clothing style structure is avoided, the moisture permeability of the female bra can be completely and accurately represented, the water vapor amount passing through the bra cup is measured, the test result is closer to the moisture permeability state when a human body wears, and the data is more accurate.
The foregoing detailed description of the embodiments of the present invention has been presented for the purpose of illustrating the principles and implementations of the present invention, and the description of the embodiments is only provided to assist understanding of the core concepts of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A brassiere moisture permeability testing arrangement which characterized in that includes:
chest models and climate boxes;
the chest model supporting equipment is used for placing the chest model, and the constant temperature and humidity control device is used for controlling the interior of the climate box to be in a constant temperature and humidity environment;
the chest model includes a chest body divided into a plurality of sweating regions, where each sweating region can independently simulate human sweating.
2. The brassiere moisture permeability test apparatus of claim 1, wherein said chest body is a polygonal honeycomb structure.
3. The moisture permeability testing device of a bra as claimed in claim 2, wherein a high water absorbent material is provided inside the chest body of the polygonal honeycomb structure.
4. The moisture permeability testing device of a brassiere according to claim 2, wherein said chest body interior is a cavity structure.
5. The moisture permeability testing device of the bra as claimed in claim 1, wherein an electric heating unit and a temperature sensor are provided on the surface and/or inside of the chest model.
6. The moisture permeability testing apparatus of a brassiere according to claim 1, wherein said chest body is constructed by arranging a plurality of polygonal columnar block structures, wherein the material inside each polygonal columnar block structure is replaceable.
7. A method for testing moisture permeability of a bra, characterized in that, the moisture permeability of the bra is tested by using the device for testing moisture permeability of the bra as claimed in any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110475838.6A CN112964624A (en) | 2021-04-29 | 2021-04-29 | Bra moisture permeability testing device and testing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110475838.6A CN112964624A (en) | 2021-04-29 | 2021-04-29 | Bra moisture permeability testing device and testing method thereof |
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| CN112964624A true CN112964624A (en) | 2021-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324768A (en) * | 2021-12-31 | 2022-04-12 | 露乐健康科技股份有限公司 | Automatic dynamic monitoring system and method for microclimate of paper diaper |
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2021
- 2021-04-29 CN CN202110475838.6A patent/CN112964624A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324768A (en) * | 2021-12-31 | 2022-04-12 | 露乐健康科技股份有限公司 | Automatic dynamic monitoring system and method for microclimate of paper diaper |
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