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Fluid Discharge

A technology for discharging devices and fluids, which is applied to spray devices, devices that apply liquid to surfaces, clothing, etc., can solve the problem of time-consuming and other problems, and achieve the effect of reducing the time for adjustment operations.

Active Publication Date: 2016-06-15
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned adjustment work must be performed on all the valves 14, 14..., and the operator is forced to spend a lot of time.

Method used

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  • Fluid Discharge
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  • Fluid Discharge

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0061] Figure 1A is a schematic perspective view of a production line having the fluid discharge device 10 of the first embodiment, Figure 1B is its top view.

[0062] On this production line, a continuous body 7 of semi-finished products is produced, which is formed, for example, in such a manner that a continuous sheet member 2 such as a nonwoven fabric forming a top sheet of a diaper and a continuous sheet such as a nonwoven fabric forming a back sheet thereof are formed. Between the parts 3, a pair of rubber threads 5, 5 for forming the tightening part of the leg circumference are sandwiched.

[0063] That is, this production line has a conveying device such as a roller (not shown) that continuously conveys the continuous sheet member 2 in the MD direction that is the conveying direction. Furthermore, an HMA application section S1 is set on this conveyance path to apply a hot-melt adhesive (hereinafter also referred to as HMA) to the continuous sheet member 2 in a pair ...

no. 2 approach

[0087] In this second embodiment, in addition to the content of the above-mentioned first embodiment, the discharge timing of the hot-melt adhesive (that is, the timing of the opening and closing operation of the valve 14 ) is changed according to the conveyance speed V2 of the continuous sheet member 2 . In addition, the other points are substantially the same as those of the first embodiment, and therefore descriptions thereof will be omitted.

[0088] Image 6 The relationship between the conveyance speed V2 of the continuous sheet member 2 and the landing position on the continuous sheet member 2 of the hot-melt adhesive discharged from the head 11 is shown. from Image 6 It can be seen that the landing position shifts toward the downstream side in the MD direction as the conveyance speed V2 increases. This is because, since the front ends of the nozzles N face the continuous sheet member 2 with predetermined intervals, it usually takes a certain amount of time until the...

no. 3 approach

[0102] Figure 8 It is a plan view of the HMA coating device 10 of the third embodiment. In the above-mentioned first and second embodiments, only one head 11 of the HMA application device 10 is provided, but in this Figure 8 In the third embodiment, two heads 11, 11b are arranged at different positions in the MD direction as an example of providing a plurality of them. In addition, in this example, the aforementioned adjustment value Ya can be set independently for each of the heads 11 , 11 b through the operation panel 40 .

[0103] That is, the PLC 30 can set a first set value, a second set value, etc. for each valve 14 of each head 11, 11b, and can also set the above-mentioned valves for each head 11, 11b. Adjustment value Ya (corresponds to "first common adjustment value" and "second common adjustment value"). Accordingly, both of the heads 11, 11b shift the timings of the opening and closing operations of all the valves 14, 14, .

[0104] In this example, the functi...

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PUM

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Abstract

A fluid discharging device that discharges fluid from a plurality of discharge openings towards a continuous sheet member which is continuously transported in a transporting direction, the discharge openings being arranged in a width direction of the continuous sheet member associated with an absorbent article. The fluid discharging device includes: a plurality of valves that correspond to the discharge openings and intermittently discharge the fluid from the discharge openings by opening and closing operations; and a controller that controls the opening and closing operations of each of the valves individually depending on a transportation amount of the continuous sheet member. The controller has a shared adjustment value that is represented by a value indicating the transportation amount. the controller shifts open-close timing of at least several valves of the a plurality of valves from a previously-determined open-close timing that the several valves are subject to, based on the shared adjustment value.

Description

technical field [0001] The present invention relates to a fluid discharge device for discharging a fluid such as a hot-melt adhesive toward a continuous sheet member such as a nonwoven fabric, which is used in the manufacture of absorbent articles such as disposable diapers. Background technique [0002] Conventionally, in the production line of disposable diapers, etc., during the continuous conveying of continuous sheet members such as nonwoven fabrics along the conveying direction, the hot-melt adhesive is discharged to the continuous sheet member and applied intermittently along the conveying direction (Patent Document 1 ). [0003] prior art literature [0004] Patent Document 1: Japanese Patent Application Laid-Open No. 6-237957 [0005] This intermittent application is performed by the hot melt adhesive application device 10 (hereinafter referred to as the HMA application device 10) ( Figure 1A , Figure 1B ). The HMA coating device 10 has, for example, a head 11...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/15A61F13/49B05C5/04B05C11/10B05B12/04
CPCB05C5/0279B05B12/084B05B13/041
Inventor 中野拓巳
Owner UNI CHARM CORP