Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
  • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
  • D06B23/24—Means for regulating the amount of treating material picked up by the textile material during its treatment
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
  • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
  • D06B19/0088—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor
  • D06B19/0094—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00 using a short bath ratio liquor as a foam

Definitions

• the invention relates to a method for applying flowable media, unfoamed or foamed, to a product in which the medium is fed under pressure to an application device with which the medium is applied to the product, and a device for carrying out the method.
• the printer, dyer, coater or outfitter on the machine should no longer set the product quality himself empirically and should not have to answer for it personally, but should only check the quality as far as this is possible for the products, such as the report, and as far as possible pay attention to optimal economy; he should find out and set the optimum process speed and. all steps, e.g. Printing, steaming, washing, drying and the like. Optimizing in a single process. Hiebei should also be considered that at today's production speeds and also with the working widths, which may be 5 m and more, the operator of the machine is hardly able to intervene quickly in such a process, so that there is a risk that large rejects are produced.
• the present invention has now set itself the task of solving the problems mentioned in an optimal manner.
• the amount applied per unit area depends on the substrate quality, the substance quality and, when working with stencils, the degree of coverage.
• the main requirements for the application device are the predictability of the application quantity or the reproductive security, the uniformity of the application quantity across the width and over any lengths.
• the speed-dependent delivery rate output is controlled via a control element in the conveying device and the job quality is ensured by measuring the job pressure, if necessary at a large number of measuring points.
• the device for carrying out the method is characterized in that at least one measuring point for the application pressure is provided between the outlet of the application device and the conveying device or in an overflow line.
• FIG. 1 to 3 schematically show a device of the invention.
• 4, 5, 6 and 7 are different embodiments for a device for eliminating any overpressure.
• FIG. 8 is a further schematic illustration of a part of the device according to the invention and
• FIG. 9 shows a possible application device in section.
• the medium to be applied is brought via a line 3 into the application device 2 by a conveyor device, which is shown as a pump 5 in FIGS. 1 to 3.
• This application device has an exit gap from which the medium to be applied exits onto the goods, not shown.
• the conveying device can also be formed by a foam generator if the medium to be applied is a foam.
• FIG. 1 just before the line 3 enters the application device 2, there is a valve 1 which discharges an excess of the medium to be applied into a vessel 6.
• the possible excess amount of the medium to be applied flows through the application device 2 and exits via the line 4 and from there into the valve 1, from where this excess amount is discharged into the vessel 6.
• the application device 2 and the valve 1 are combined with one another, a return line 4 to the original conveying device 5 being provided here.
• Valve 1 responds to the application pressure and opens when this application pressure exceeds a predetermined value.
• the excess amount is then derived from the application system and at the same time the measured pressure value can be converted into a signal value, which then reacts on the pressure source 5, for example a pump, or on a foam generator and controls the quantity output.
• the signal value from the pressure measurement can also affect the speed control of the goods.
• the measurement of the speed of the goods for example by means of a tachodynamo, can also be used as another component for controlling the quantity output.
• FIG. 4 shows a possible embodiment of a valve, as it can be arranged just upstream of the application device.
• This valve has a housing 7 with a nozzle 8, which is connected to the line 9 shown only symbolically here for the medium to be applied.
• the bore 10 in this nozzle 8 can be closed by the valve plate 11.
• the valve plate 11 is connected according to FIG. 4 to a piston 12 guided in the valve housing 7.
• the valve housing 7 has an opening 13 through which an auxiliary medium 14 can act on the piston 12.
• FIG. 5 shows a further embodiment, which is constructed in a similar manner to FIG. 4, but here is the one to be measured dium acted upon area of the valve plate 11 larger than the area of the piston 12 acted upon by the auxiliary medium 14.
• FIG. 6 shows a further embodiment, where the piston 16 is adjustable via a threaded rod 17 and between the valve plate 11 and the piston 16 is a spring 17 arranged so that the opening pressure is adjustable.
• FIG. 7 shows a further embodiment of the valve, which has a special configuration.
• the piston 12 there are annular gaps 18 through which the auxiliary medium can flow.
• seals 19 are inserted in valve plate II. Such seals can of course also be provided in the other embodiments.
• the valve according to FIG. 7 can be screwed to the line 21 with a connecting piece on the line for the medium to be applied.
• valve 8 schematically shows a further arrangement option for the valve, which in turn is located just before the inlet 3 for the medium to be applied enters the application device 2 and is combined with an actuator 23, which operates as a function of the respective production speed.
• the application pressure can, however, not only be measured just before the inlet 3 enters the application device 2, but also near the exit gap of the application device 2.
• a number of measuring points can be distributed over the exit gap. If necessary, these measuring points can also act on the conveying device again via a computing unit, so that the delivery rate can be changed as a function of the application pressure.
• the medium to be applied enters via a pipe 22 into a channel 23, which is followed by a branching channel system 24. These channels have an ever smaller diameter and the medium is thus distributed over the entire width of the application device. Finally, the medium 33 enters a cavity 26 via a plurality of outlets 25, which ends in the application slot 27, the edges 28 and 29 of which are magnetically applied to the template 30 or the web
• variable width of the application slot is important for process engineering, since a wide slot combined with a low application pressure results in an abundant surface application. A narrow slot and high application pressure increase the depth effect.
• the device according to the invention can be operated both by hand control and by means of an automatic system.
• the foam generator In manual control, the foam generator is set to an empirically determined performance value (desired foam weight and expected amount of foam) and the foam weight is checked on the open pressure control or overflow valve.
• the foam control valve is set to a preselected application pressure and as soon as this application system pressure is reached, the printing or coating machine is switched on and accelerated until the foam quantity generated by the foam generator is fully used up.
• the foam generator is set to the desired foam liter weight and conveys the foam with minimum output up to a three-way foam valve. The application pressure for the minimum speed and for the planned production speed is specified.
• the minimum speed is automatically increased to the preselected production speed, the foam quantity output of the foam generator being constantly compared and regulated with the machine speed.
• the foam valve opens automatically so that no excess pressure can arise in the application device.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3540584

Family Applications (1)

Country Status (6)

Families Citing this family (24)

Family Cites Families (15)

• 1984
  • 1984-08-31 AT AT0280584A patent/AT380648B/de not_active IP Right Cessation
• 1985
  • 1985-08-29 WO PCT/AT1985/000028 patent/WO1986001548A1/de not_active Application Discontinuation
  • 1985-08-29 JP JP85503955A patent/JPS61501403A/ja active Granted
  • 1985-08-29 US US06/870,764 patent/US4833748A/en not_active Expired - Fee Related
  • 1985-08-29 BR BR8506899A patent/BR8506899A/pt not_active IP Right Cessation
  • 1985-08-29 EP EP19850904309 patent/EP0192699A1/de not_active Withdrawn

Non-Patent Citations (1)

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