TW201739432A - Nonwoven fabric with humidity sensing function for achieving the effect of automatic warning of humid absorbent - Google Patents

Abstract

The invention relates to nonwoven fabric with humidity sensing function, in which the nonwoven fabric with chemical fabrics is provided with the moisture detection function. The humidity-sensing nonwoven fabric contains multiple strip-shape metal films sputtered on the surface thereof. The metal films are sputtered on the surface of the humidity-sensing nonwoven fabric and in the gap of chemical fabrics. Therefore, the metal films are very thin and tightly adhered to the surface of the humid-sensing nonwoven fabric so as to achieve the effects of excellent electric conductivity and secure electric connection. In addition, the nonwoven fabric with humidity sensing function is placed under the surface nonwoven fabric and adhered onto an absorbent. Furthermore, one edge of each strip-shape metal film is coupled to a humidity sensor. In response to that the humidity-sensing nonwoven absorbent absorbs moisture and becomes humid, two adjacent metal films are electrically conducted to each other because of the moisture. Accordingly, it can detect that the humidity-sensing nonwoven absorbent has become humid so as to achieve the effect of automatic warning of humid absorbent.

Description

Non-woven fabric with moisture sensing function

The invention relates to a non-woven fabric with sensing moisture function, which makes the chemical fiber non-woven fabric have the effect of sensing moisture moisture.

It is known that there is a non-woven fabric that senses moisture. Its technology and structure are designed to: when manufacturing non-woven fabrics, several metal wires are laid at the same time, and the metal wires are covered by non-woven chemical fibers, and the metal wires have conductive functions. When moisture causes the two wires to conduct (conducting), it is possible to sense moisture; the above techniques and structures have the following disadvantages:

(1) This type of non-woven fabric with moisture sensing function is generally used as a "diaper". It is customary to use "metal wire". The straight line should not be too thick, otherwise it will cause uncomfortable wearing. Moreover, when the diameter of the metal wire is thin, it is easily broken, resulting in loss of the sensing moisture function.

(2) If the metal wire is changed to a metal foil, the combination of the metal foil and the non-woven fabric is not strong enough, and the phenomenon of being detached from the non-woven fabric is liable to occur, and the breakage loss sensing moisture function is caused.

The invention is to break through the conventional technology, and can improve the shortcomings of the conventional sensing moisture non-woven fabric. The main technology and purpose is to: sprinkle a plurality of spaced metal films on the surface of the wet moisture non-woven fabric, and the metal film is Sputtering on the surface of the chemical fiber that senses the wet non-woven fabric, and the gap between the chemical fibers, can be combined with a strong effect, and thus can be extremely thin, not easy to break. Each metal film can be connected to a humidity sensor, and when the moisture non-woven fabric is sensed to be wet, the two metal films are electrically conductive, and the sensor can issue a warning to sense that the moisture non-woven fabric has the function of sensing moisture.

【this invention】

10‧‧‧Sensing wet non-woven fabric

11,12,13‧‧‧Metal film

14‧‧‧Surface non-woven

15‧‧‧Adult diaper replacement tablets

H‧‧‧ gap

The first figure shows a schematic view of the structure of the present invention

Second figure, a partial cross-sectional enlarged view of the structure of the present invention

The third figure shows the embodiment of the sensing wet non-woven fabric of the present invention.

Fourth Figure of the present invention

Fig. 5 is a diagram showing an embodiment of the present invention

Please refer to the first and second figures. The surface of the wet non-woven fabric 10 composed of polyester and polyethylene composite chemical fiber is sputtered with three metal films 11, 12 and 13 having a width of 10 mm (mm). 12, 13 are spaced apart, the separation distance is 30 mm, and the metal film 11, 12, 13 is sputtered on the surface of the chemical fiber that senses the wet non-woven fabric 10, and penetrates into the gap H of the chemical fibers and the depth of the wet non-woven fabric 10 Formed in combination with the chemical fiber that senses the wet non-woven fabric 10. And the sensing wet non-woven fabric 10 is placed under the surface non-woven fabric 14 (see FIG. 3) in contact with the oozing liquid, that is, a layer of non-woven fabric 14 is interposed between the oozing liquid, and the two do not need to be bonded, that is, the surface non-woven fabric. 14 is only overlaid on the sensed wet non-woven fabric 10, and the moisture-sensitive non-woven fabric 10 is placed on top of a commercially available adult diaper substitute sheet 15 (Laiyi adult diaper) and sprayed with both Adhesive for artificial urine testing (see Figure 3).

In detail, the chemical fiber for sensing the wet non-woven fabric 10 can be made of polyester, polyamide, polypropylene, polyethylene, polyacrylonitrile or a combination thereof, and a plated metal material is obtained on the above chemical fiber. The fiber material for sensing moisture non-woven fabric used in the present embodiment is polyester and polyethylene conjugate fiber, the metal material is copper, and the metal film 11, 12, 13 is sputtered. The width of the metal films 11, 12, 13 is 10 mm (mm), and the resistance of the metal films 11, 12, 13 is 200 ohms (measured by a three-meter electric meter 10 cm pitch). For example, when applying the "diaper", when the moisture sensing test is performed, the surface non-woven fabric 14 is placed over the sensing moisture non-woven fabric 10, and the two do not need to be bonded, that is, the surface non-woven fabric 14 only covers the sensing moisture non-woven fabric 10 Above, and under the sensing wet non-woven fabric 10, an adult diaper substitute sheet 15 (returning adult diapers) is placed and glued to bond the two, and then 500 ml of artificial urine is poured on the surface non-woven fabric 14, Then, the resistance between the metal films 11, 12, and 13 was measured by a three-meter electric meter, and the resistance values of the measurement results are shown in Table 1 (see Fig. 3).

The metal film 11, 12, 13 is connected to the moisture sensor. If the preset resistance value is reached, the sensor can send a warning signal to automatically sense the moisture. Moreover, the present invention has the following effects and advantages:

(1) The metal films 11, 12, and 13 are formed by sputtering and bonding to the surface of the chemical fiber that senses the wet non-woven fabric 10 and the gap H of the chemical fiber, so that the effect of bonding is strong, and therefore, the metal film 11, 12, 13 is extremely thin and has excellent flexibility. When applied to diapers, it has to be worn more comfortably.

(2) The metal films 11, 12, and 13 are sputtered in the chemical fiber for sensing the wet non-woven fabric 10, and the gap H between the chemical fibers, so that the effect is not easily broken, even if some chemical fibers are broken, However, they can still be in contact with each other while still maintaining electrical conductivity.

(3) The metal films 11, 12, and 13 are extremely thin, so that the amount of material is small and the cost is low.

In addition, according to the above technology, the present invention also implements the following types: (1) shown in the fourth figure, the metal films 11, 12, 13 are set to a large area, and between the metal films 11, 12, 13 With a spacing, the width is 40mm, 20mm and 40mm respectively. (2) As shown in the fifth figure, one layer senses the surface of the wet non-woven fabric 10 and the metal film 11, 12, 13 is sputtered, and a layer of non-woven fabric 14 is coated on the metal film 11, 12, 13 to form a two-layer non-woven structure. Where the wet non-woven fabric 10 is sensed to have metal films 11, 12, 13.

In summary, the present invention is indeed the first to create and have excellent practical effects in the field of non-woven articles, and is in line with the gist of the invention patent, and is therefore required to grant a patent.

10‧‧‧Sensing wet non-woven fabric

11,12,13‧‧‧Metal film

Claims (5)

A non-woven fabric having a moisture sensing function, which is formed by chemical fiber structuring on the surface of the wet non-woven fabric, and sputtering a plurality of spaced metal films which are sputtered on the surface of the chemical fiber which senses the wet non-woven fabric, and infiltrated to sense moisture The gap between the chemical fibers of the non-woven fabric is formed into a gap with the chemical fiber for sensing the moisture non-woven fabric, and the moisture-sensitive non-woven fabric with the sensing moisture function is placed under the surface non-woven fabric in contact with the exuding liquid, that is, the exudation The liquid is separated by a layer of non-woven fabric, and the other side of the wet non-woven fabric is sensed and then combined with the absorber; and the metal film can be connected to the humidity sensor with the electric wire, and the absorber is automatically perceived to be wet. The non-woven fabric having the moisture sensing function as claimed in claim 1, wherein the chemical fiber for sensing the moisture non-woven fabric is made of polyester, polyamide, polypropylene, polyethylene, polyacrylonitrile or a combination thereof. A non-woven fabric having a moisture sensing function according to claim 1, wherein the wetted non-woven fabric of the sputtered metal film is bonded to another non-woven fabric or a plurality of non-woven fabrics to form a non-woven fabric having a moisture-sensing function. The non-woven fabric having the moisture sensing function as described in claim 1 can be directly introduced into the process of producing the absorbent product, and bonded to the absorbent body to become a product having a moisture sensing function. The non-woven fabric with moisture sensing function as claimed in claim 1 can be combined with products such as diapers, substitute sheets, wet wipes, nursing pads and wound dressings to become a moisture sensitive product.