EP0031862B1 - Method and apparatus for aftertreatment of textile sheet by application of microwaves - Google Patents

Method and apparatus for aftertreatment of textile sheet by application of microwaves Download PDF

Info

Publication number
EP0031862B1
EP0031862B1 EP19790850116 EP79850116A EP0031862B1 EP 0031862 B1 EP0031862 B1 EP 0031862B1 EP 19790850116 EP19790850116 EP 19790850116 EP 79850116 A EP79850116 A EP 79850116A EP 0031862 B1 EP0031862 B1 EP 0031862B1
Authority
EP
European Patent Office
Prior art keywords
textile sheet
microwaves
roll
steam
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19790850116
Other languages
German (de)
French (fr)
Other versions
EP0031862A1 (en
Inventor
Bunshiro Kawaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ichikin Ltd
Original Assignee
Ichikin Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ichikin Ltd filed Critical Ichikin Ltd
Priority to EP19790850116 priority Critical patent/EP0031862B1/en
Priority to DE7979850116T priority patent/DE2966649D1/en
Publication of EP0031862A1 publication Critical patent/EP0031862A1/en
Application granted granted Critical
Publication of EP0031862B1 publication Critical patent/EP0031862B1/en
Expired legal-status Critical Current

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/20Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2016Application of electric energy
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06BTREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/007Fixing of chemicals, e.g. dyestuffs, on textile materials by application of electric energy

Definitions

  • the present invention relates to method and apparatus for aftertreatment of textile sheet by application of microwaves, and more particularly relates to improvement in effective drying of scoured or dyed textile sheet by means of irradiation of microwaves.
  • microwaves refers to electromagnetic waves whose frequencies are in a range from 300 to 30,000 MHz (GB-A-1.482.755).
  • Microwaves are provided with various advantages in particular when they are used in treatment of textile sheet in a wet state. Firstly, they permeate into the textile sheet extremely quickly and heat it within a very short time. Secondly, since their heat generation is based on dielectric loss, they are selectively absorbed in objects with large dielectric loss in order to heat necessary object only whilst avoiding heating of unnecessary object or objects. Thirdly, the treated textile sheet generates heat by itself whilst avoiding the need for additionally heating the ambient atmosphere and/or the heater equipment, thereby assuring high rate of thermal efficiency resulting from heat saving. Fourthly, since they cause simultaneous temperature rise at different sections of the treated sheet, difference in temperature between the core and surface sections of the sheet is very small, thereby assuring ideally uniform heating of the sheet. Fifthly, adjustment of the output voltage for the microwaves enables simple and easy control of the heating condition in accordance with requirement in the actual treatment.
  • Irradiation of microwaves onto a textile sheet causes ionic conduction and dipole rotation of the fibers composing the textile sheet and water and/or agents contained in the sheet in order to cause rapid and uniform heating of the textile sheet.
  • An applicator is generally used for this purpose and the conventional applicators are roughly classified into three types, i.e. an applicator with a hairpin curved waveguide, an applicator with a densely hair-pin curved waveguide, and an oven-type applicator.
  • the oven-type applicator including a metallic hexahedral irradiation chamber
  • any expedient to equalize the intensity of the magnetic field surrounding the sheet in the chamber.
  • the applicator of this type is quite unsuited for use in practical industrial scale although it may operate in order in laboratories.
  • the other cause for the above-described difficulty resides in fusion of fibers composing a textile sheet during, or as a result of, heating by application of microwaves.
  • This is in particular a serious problem when the textile sheet is composed of thermoplastic synthetic fibers such as acrylic fibers.
  • Such fusion of the textile sheet is caused by temperature rise in water as a dyeing medium and/or a high boiling point agent or agents as assistants, both being contained in the textile sheet after dyeing.
  • a further cause for the above-described difficulty resides in the manner to prevent the above-described evacuation of water contained in the fibers during the treatment.
  • a textile sheet is transported through the microwave applicator zone or zones while being clamped between a pair of running endless belts or being placed in surface contact with a wet sheet. In either cases, possible contamination on the belts or sheet tends to develop spots on the textile sheet, which greatly degrades its commercial value.
  • It is one object of the present invention is to provide ideal aftertreatment of textile sheet by application of microwaves with highly uniform heating effect.
  • the method of the present invention is defined in claim 1 and the apparatus in claim 8.
  • FIG. 1 A basic embodiment of the apparatus in accordance with the present invention is shown in Fig. 1, in which the apparatus includes, as the major elements, a preparatory heating chamber 1 and a microwave irradiation chamber 2 arranged in sequence with each other along the path of travel of a textile sheet M.
  • the present invention is well applicable to treatment of a textile sheet of any form. It may be a woven cloth, a knitted cloth or flat sheet of threads arranged side-by-side relationship to each other.
  • the present invention is well applicable to treatment of a textile sheet dyed in any manner. It may be dyed by winch dyeing, jigger dyeing, beam dyeing, pad winch process, pad jig process, pad batch process, pad steam process, or screen or roll printing.
  • the present invention is well applicable to treatment of a scoured or dyed textile sheet made of any fibers including natural, regenerated and synthetic fibers, although it is most advantageously applied to treatment of a textile sheet made of synthetic fibers.
  • the chambers 1 and 2 are both connected to a steam pipe 3 for feeding steam of a proper pressure to their interiors.
  • the preparatory heating chamber 1 is internally provided with a feed guide roller 11 arranged near its inlet, a delivery guide roller 12 arranged near its outlet, and a number of intermediate guide rollers 13 arranged in the zone between the two rollers 11 and 12.
  • the number and arrangement of the intermediate guide rollers 13 can be freely designed depending on requirement for the length of the travelling path of the textile material through the chamber 1.
  • Preparatory heating should be applied to the textile sheet in a wet state.
  • the preparatory heating has its particular significance when the textile sheet is made of synthetic fibers such as polyamide, polyester and acrylic fibers, since such fibers may fuse during the treatment depending on the length of the treatment and the output power of the microwaves.
  • hydrophilic fibers such as cellulose fibers
  • colour fixing starts several seconds after imitation of microwave irradiation and its dyeing affinity arrives at the highest value within about 20 seconds.
  • hydrophobic fibers such as polyamide fibers require microwave irradiation over a period of 5 minutes or longer. This is because of the fact that a relatively long time is required to cause swelling of the textile sheet to an extent enough to allow appreciable diffusion of dyes into the fibers composing the textile sheet.
  • long irradiation of microwaves on a textile sheet inevitably causes fusion of the fibers composing the textile sheet.
  • the preparatory heating preceding the microwave irradiation causes appreciable, though not enough, swelling of the textile sheet, thereby enabling relatively short microwave irradiation for diffusion of dyes.
  • the microwave irradiation chamber 2 is provided with a microwave applicator 21 electrically connected in a known manner to a microwave generator (not shown).
  • the textile sheet M introduced into the chamber 2 is wound up onto a roll R via a feed guide roller 22 and an intermediate guide roller 23.
  • a known driving mechanism is arranged in order to rotate the roll R following any programmed sequence including positive rotation after complete winding-up.
  • the winding-up speed of the textile sheet is in a range from 50 to 100 MPM and the length of a unit textile sheet is about 2,000 meters for the unit weight 100 g/m 2 , and about 1,000 meters for the unit weight 200 g/m 2 .
  • a microwave generator of the maximum output power 10 KW at 2450 MHz frequency may be used. Oscillation of microwaves is carried out by two sets of water-cooling type magnetron of 5 KW output power. Any known type of waveguide may be used as long as it assures uniform irradiation on the textile sheet in the roll form.
  • the microwave irradiation should be carried out under saturation of the chamber 2 with steam.
  • high pressure steam of about 4 kg/cm 2 should preferably be introduced into the chamber 2.
  • a particular shelter construction 24 is arranged in the zone between the feed and intermediate rollers 22 and 23, which is shown in detail in Fig. 2.
  • the shelter construction 24 is arranged within a space defined by a pair of relatively thick vertical walls 25 and 26 which prevent depositing of dews on the construction.
  • the outer wall 25 is provided with a ventilation duct 27 whose inner opening is covered with a punched plate 28 for preventing leakage of electric waves via the duct 27.
  • the top of the space is covered by an adjustable slit plate 241 whose opening is freely adjustable in size in accordance with the processing conditions.
  • a blocking filter 242 is arranged vertically below the slit plate 241, which includes a plurality of electric wave damping elements 242a aligned vertically whilst facing the travelling path of the textile sheet M.
  • An electric wave absorber plate 242b is vertically arranged on the opposite side of the travelling path.
  • a water reservoir 243 is arranged in the proximity of the inlet guide roller 22 below the inner wall 26, which absorbs microwaves surviving even after passage through the blocking filter 242.
  • Irradiation of the microwaves should be carried out with the roll being in rotation.
  • the irradiation lasts during winding-up of the textile material on the roll and subsequent positive rotation of the roll. This positive rotation may last for 10 to 20 minutes.
  • the irradiation may last during the winding-up of the textile sheet only. It may also last during the subsequent positive rotation only for 10 to 20 minutes. Choice of the irradiation is dependent upon the process conditions.
  • a textile sheet in the form of a woven cloth made of an acrylic fiber was dyed in a dye bath of the following composition.
  • the dyed textile sheet was squeezed on a padder to 80% pick-up.
  • Irradiation of microwaves was carried out on the apparatus of the present invention with an output power of 10 KW at a frequency of 2450 MHz for 10 minutes during the subsequent positive rotation of the roll.
  • a textile sheet in the form of a woven cloth made of a cellulose fiber was dyed in a dye bath of the following composition.
  • a textile sheet in the form of a woven cloth made of wool was dyed in a dye bath of the following composition.
  • a textile sheet in the form of a woven cloth made of polyamides 6 and 66 was dyed in a dye bath of the following composition.
  • Example 2 Squeezing was same as that in Example 1. Irradiation of microwaves was carried out with an output power of 5 KW at a frequency of 2450 MHz for 15 minutes during the subsequent positive rotation of the roll.
  • a textile sheet in the form of a woven cloth made of polyester fiber was dyed in a dye bath of the following composition.
  • Example 2 Squeezing was same as that in Example 1. Irradiation of microwaves was carried out with an output power of 8 KW at a frequency of 2450 MHz for 15 minutes during the subsequent positive rotation of the roll.

Description

    BACKGROUND OF THE INVENTION
  • The present invention relates to method and apparatus for aftertreatment of textile sheet by application of microwaves, and more particularly relates to improvement in effective drying of scoured or dyed textile sheet by means of irradiation of microwaves.
  • Fixing and development of dyes on dyed textile sheet have long been carried out by means of steaming the dyed textile sheet after interposed drying.
  • As a substitute for the steaming process, it has recently been proposed (FR-A-2.375.384, GB-A-1.124.787, GB-A-704.972, GB-A-817.134) to apply microwaves to dyed textile sheet in wet state. Here, the word "microwaves" refers to electromagnetic waves whose frequencies are in a range from 300 to 30,000 MHz (GB-A-1.482.755).
  • Microwaves are provided with various advantages in particular when they are used in treatment of textile sheet in a wet state. Firstly, they permeate into the textile sheet extremely quickly and heat it within a very short time. Secondly, since their heat generation is based on dielectric loss, they are selectively absorbed in objects with large dielectric loss in order to heat necessary object only whilst avoiding heating of unnecessary object or objects. Thirdly, the treated textile sheet generates heat by itself whilst avoiding the need for additionally heating the ambient atmosphere and/or the heater equipment, thereby assuring high rate of thermal efficiency resulting from heat saving. Fourthly, since they cause simultaneous temperature rise at different sections of the treated sheet, difference in temperature between the core and surface sections of the sheet is very small, thereby assuring ideally uniform heating of the sheet. Fifthly, adjustment of the output voltage for the microwaves enables simple and easy control of the heating condition in accordance with requirement in the actual treatment.
  • Irradiation of microwaves onto a textile sheet causes ionic conduction and dipole rotation of the fibers composing the textile sheet and water and/or agents contained in the sheet in order to cause rapid and uniform heating of the textile sheet.
  • A wide variety of systems have been proposed in order to practice the above-described microwave irradiation in treatment of textile sheet, but quite a few of them have been feasible in practical industrial scale.
  • One cause for this difficulty resides in the manner of irradiation of microwaves. An applicator is generally used for this purpose and the conventional applicators are roughly classified into three types, i.e. an applicator with a hairpin curved waveguide, an applicator with a densely hair-pin curved waveguide, and an oven-type applicator.
  • In the case of the applicator using the waveguide, heating effect is greatly affected by wave length of the microwave irradiated and uneven heating of the sheet tends to take place. Consequently, the applicators of these types are unsuited for treatment of dyed or scoured textile sheets, which required high rate of uniformity heating effect.
  • In the case of the oven-type applicator including a metallic hexahedral irradiation chamber, it is necessary to employ any expedient to equalize the intensity of the magnetic field surrounding the sheet in the chamber. Otherwise, the applicator of this type is quite unsuited for use in practical industrial scale although it may operate in order in laboratories.
  • The other cause for the above-described difficulty resides in fusion of fibers composing a textile sheet during, or as a result of, heating by application of microwaves. This is in particular a serious problem when the textile sheet is composed of thermoplastic synthetic fibers such as acrylic fibers. Such fusion of the textile sheet is caused by temperature rise in water as a dyeing medium and/or a high boiling point agent or agents as assistants, both being contained in the textile sheet after dyeing. For example, in the case of a textile sheet made of acrylic fibers which can be dyed at a temperature close to the boiling point of pure water, swelling of the dyed fibers starts at a temperature close to 100°C and, regardless of its dielectric constant, dipole rotation occurs in the fibers, which causes abrupt evacuation of water, temperature rise and eventual fusion of the fibers. In order to prevent such fusion of fibers composing the textile sheet, it is absolutely necessary to prevent evacuation of water contained in the fibers during the treatment.
  • A further cause for the above-described difficulty resides in the manner to prevent the above-described evacuation of water contained in the fibers during the treatment. For this effect, a textile sheet is transported through the microwave applicator zone or zones while being clamped between a pair of running endless belts or being placed in surface contact with a wet sheet. In either cases, possible contamination on the belts or sheet tends to develop spots on the textile sheet, which greatly degrades its commercial value.
  • SUMMARY OF THE INVENTION
  • It is one object of the present invention is to provide ideal aftertreatment of textile sheet by application of microwaves with highly uniform heating effect.
  • It is another object of the present invention to provide successful aftertreatment of textile sheet by application of microwaves without causing any accidental fusion of fibers composing the sheet during the treatment.
  • It is the other object of the present invention to provide advantageous aftertreatment of textile sheet by application of microwaves without development of any spots on the treated sheet.
  • It is a further object of the present invention to provide economical aftertreatment of textile sheet by application of microwaves with simple construction in equipment.
  • The method of the present invention is defined in claim 1 and the apparatus in claim 8.
  • DESCRIPTION OF THE DRAWINGS
    • Fig. 1 is a side view, partly in section, of an embodiment of the apparatus in accordance with the present invention, and
    • Fig. 2 is an enlarged side sectional view of the sheltered construction of the inlet used in the apparatus shown in Fig. 1.
    DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • It should be understood that, although the following description is focussed upon treatment of dyed textile sheet, the present invention is equally applicable to treatment of scoured textile sheet.
  • A basic embodiment of the apparatus in accordance with the present invention is shown in Fig. 1, in which the apparatus includes, as the major elements, a preparatory heating chamber 1 and a microwave irradiation chamber 2 arranged in sequence with each other along the path of travel of a textile sheet M.
  • It should be understood that the present invention is well applicable to treatment of a textile sheet of any form. It may be a woven cloth, a knitted cloth or flat sheet of threads arranged side-by-side relationship to each other.
  • It should be further understood that the present invention is well applicable to treatment of a textile sheet dyed in any manner. It may be dyed by winch dyeing, jigger dyeing, beam dyeing, pad winch process, pad jig process, pad batch process, pad steam process, or screen or roll printing.
  • It should be further understood that the present invention is well applicable to treatment of a scoured or dyed textile sheet made of any fibers including natural, regenerated and synthetic fibers, although it is most advantageously applied to treatment of a textile sheet made of synthetic fibers.
  • The chambers 1 and 2 are both connected to a steam pipe 3 for feeding steam of a proper pressure to their interiors.
  • The preparatory heating chamber 1 is internally provided with a feed guide roller 11 arranged near its inlet, a delivery guide roller 12 arranged near its outlet, and a number of intermediate guide rollers 13 arranged in the zone between the two rollers 11 and 12. The number and arrangement of the intermediate guide rollers 13 can be freely designed depending on requirement for the length of the travelling path of the textile material through the chamber 1.
  • Preparatory heating should be applied to the textile sheet in a wet state. In application of the present invention, the preparatory heating has its particular significance when the textile sheet is made of synthetic fibers such as polyamide, polyester and acrylic fibers, since such fibers may fuse during the treatment depending on the length of the treatment and the output power of the microwaves.
  • In the case of hydrophilic fibers such as cellulose fibers, colour fixing starts several seconds after imitation of microwave irradiation and its dyeing affinity arrives at the highest value within about 20 seconds. In contrast to this, hydrophobic fibers such as polyamide fibers require microwave irradiation over a period of 5 minutes or longer. This is because of the fact that a relatively long time is required to cause swelling of the textile sheet to an extent enough to allow appreciable diffusion of dyes into the fibers composing the textile sheet. However, as described already, long irradiation of microwaves on a textile sheet inevitably causes fusion of the fibers composing the textile sheet.
  • In order to obviate such a trouble, it may be thinkable to employ relatively long irradiation of microwaves whilst cutting down the output power of the microwaves. But, such a long irradiation degrades the basic merit of treatment by application of microwaves, i.e. rapid processing.
  • In accordance with the present invention, the preparatory heating preceding the microwave irradiation causes appreciable, though not enough, swelling of the textile sheet, thereby enabling relatively short microwave irradiation for diffusion of dyes.
  • The microwave irradiation chamber 2 is provided with a microwave applicator 21 electrically connected in a known manner to a microwave generator (not shown). The textile sheet M introduced into the chamber 2 is wound up onto a roll R via a feed guide roller 22 and an intermediate guide roller 23. A known driving mechanism is arranged in order to rotate the roll R following any programmed sequence including positive rotation after complete winding-up.
  • The winding-up speed of the textile sheet is in a range from 50 to 100 MPM and the length of a unit textile sheet is about 2,000 meters for the unit weight 100 g/m2, and about 1,000 meters for the unit weight 200 g/m2.
  • A microwave generator of the maximum output power 10 KW at 2450 MHz frequency may be used. Oscillation of microwaves is carried out by two sets of water-cooling type magnetron of 5 KW output power. Any known type of waveguide may be used as long as it assures uniform irradiation on the textile sheet in the roll form.
  • The microwave irradiation should be carried out under saturation of the chamber 2 with steam. In case any animal fiber such as wool is to be treated, high pressure steam of about 4 kg/cm2 should preferably be introduced into the chamber 2.
  • Consequently, the interior of the irradiation chamber 2 is replete with microwaves and steam during the treatment. In order to prevent accidental leakage of the microwaves and the steam outside the chamber 2 whilst allowing free introduction of the textile sheet M into the chamber, a particular shelter construction 24 is arranged in the zone between the feed and intermediate rollers 22 and 23, which is shown in detail in Fig. 2.
  • The shelter construction 24 is arranged within a space defined by a pair of relatively thick vertical walls 25 and 26 which prevent depositing of dews on the construction. The outer wall 25 is provided with a ventilation duct 27 whose inner opening is covered with a punched plate 28 for preventing leakage of electric waves via the duct 27. The top of the space is covered by an adjustable slit plate 241 whose opening is freely adjustable in size in accordance with the processing conditions. A blocking filter 242 is arranged vertically below the slit plate 241, which includes a plurality of electric wave damping elements 242a aligned vertically whilst facing the travelling path of the textile sheet M. An electric wave absorber plate 242b is vertically arranged on the opposite side of the travelling path. Even when the microwaves in the chamber 2 leak outside via the slit plate 241, they are almost fully attenuated during their travel through the blocking filter 242. Leakage of the steam in the chamber 2 is extremely minimized due to the presence of the slit plate 241. A water reservoir 243 is arranged in the proximity of the inlet guide roller 22 below the inner wall 26, which absorbs microwaves surviving even after passage through the blocking filter 242.
  • Irradiation of the microwaves should be carried out with the roll being in rotation. In the ordinary case, the irradiation lasts during winding-up of the textile material on the roll and subsequent positive rotation of the roll. This positive rotation may last for 10 to 20 minutes. The irradiation may last during the winding-up of the textile sheet only. It may also last during the subsequent positive rotation only for 10 to 20 minutes. Choice of the irradiation is dependent upon the process conditions.
  • EXAMPLES Example 1.
  • A textile sheet in the form of a woven cloth made of an acrylic fiber was dyed in a dye bath of the following composition.
    Figure imgb0001
  • The dyed textile sheet was squeezed on a padder to 80% pick-up.
  • Irradiation of microwaves was carried out on the apparatus of the present invention with an output power of 10 KW at a frequency of 2450 MHz for 10 minutes during the subsequent positive rotation of the roll.
  • Ideal effects were obtained in shade, tone and value, which were all by far better than those obtained by any conventional treatment.
  • Example 2.
  • A textile sheet in the form of a woven cloth made of a cellulose fiber was dyed in a dye bath of the following composition.
    Figure imgb0002
  • Squeezing and irradiation of microwaves were carried out in manners similar to those in Example 1.
  • Ideal effects were obtained in shade, tone and value, which were all by far better than those obtained by any conventional treatment.
  • It was confirmed also that sodium-bi-carbonate could be substituted for sodium carbonate without any lowering in the effects.
  • Example 3.
  • A textile sheet in the form of a woven cloth made of wool was dyed in a dye bath of the following composition.
    Figure imgb0003
  • Squeezing and irradiation of microwaves were same as those in Example 1, but the latter lasted for 25 minutes.
  • Excellent effects were obtained in shade, tone and value, which were all by far better than those obtained by any conventional treatment for wool.
  • Example 4.
  • A textile sheet in the form of a woven cloth made of polyamides 6 and 66 was dyed in a dye bath of the following composition.
    Figure imgb0004
  • Squeezing was same as that in Example 1. Irradiation of microwaves was carried out with an output power of 5 KW at a frequency of 2450 MHz for 15 minutes during the subsequent positive rotation of the roll.
  • Excellent effects were obtained in shade, tone and value, which were all by far better than those obtained by any conventional treatment.
  • Example 5.
  • A textile sheet in the form of a woven cloth made of polyester fiber was dyed in a dye bath of the following composition.
    Figure imgb0005
  • Squeezing was same as that in Example 1. Irradiation of microwaves was carried out with an output power of 8 KW at a frequency of 2450 MHz for 15 minutes during the subsequent positive rotation of the roll.
  • Excellent effects were obtained in shade, tone and value, which were all by far better than those obtained by any conventional treatment.

Claims (11)

1. Method for treating a textile sheet after scouring or dyeing with microwaves wherein the textile sheet in a wet state is introduced into a confined microwave irradiation chamber replete with steam, characterized in that the textile sheet (M) is subjected to preparatory heating under steam supply before introduction into the microwave irradiation chamber (2), that the textile sheet is wound into a roll, within the chamber and that microwaves are applied to the roll during its rotation.
2. Method as claimed in claim 1 in which said application of microwaves lasts during rotation of said roll for winding up said textile sheet and subsequent positive rotation of said roll.
3. Method as claimed in claim 1 in which said application of microwaves lasts during said rotation of said roll for winding up said textile sheet.
4. Method as claimed in claim 1 in which said application of microwaves lasts during said subsequent positive rotation of said roll.
5. Method as claimed in claim 1 or 4 in which said subsequent positive rotation of said roll lasts 10 to 20 minutes.
6. Method as claimed in claim 1, 2 or 3 in which said application of microwaves is carried out in a substantially confined chamber saturated with steam.
7. Method as claimed in claim 1, 2 or 3 in which said application of microwaves is carried out in a confined chamber filled with high pressure steam.
8. Apparatus for treating a textile sheet after scouring or dyeing with microwaves wherein the textile sheet in a wet state is introduced into a confined microwave irradiation chamber replete with steam, characterized in that a preparatory heating chamber (1) is located on the upstream side of the microwave irradiation chamber (2) and replete with steam, that the microwave irradiation chamber is internally provided with means for winding up the textile sheet into a roll, and means for rotating the roll following a predetermined programme.
9. Apparatus as claimed in claim 8 further comprising a shelter construction arranged near the inlet of said microwave irradiation chamber for blocking leakage of said steam and microwaves.
10. Apparatus as claimed in claim 9 in which said shelter construction includes a pair of vertical walls defining a space, an adjustable slit plate closing the top of said space whilst allowing passage of said textile sheet, and a blocking filter arranged within said space which said textile sheet passes through.
11. Apparatus as claimed in claim 10 in which said blocking filter includes a plurality of electric wave damping elements aligned vertically on the one side of travelling path of said textile sheet and a vertically elongated electric wave absorbable plate arranged on the other side of said travelling path.
EP19790850116 1979-12-28 1979-12-28 Method and apparatus for aftertreatment of textile sheet by application of microwaves Expired EP0031862B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19790850116 EP0031862B1 (en) 1979-12-28 1979-12-28 Method and apparatus for aftertreatment of textile sheet by application of microwaves
DE7979850116T DE2966649D1 (en) 1979-12-28 1979-12-28 Method and apparatus for aftertreatment of textile sheet by application of microwaves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19790850116 EP0031862B1 (en) 1979-12-28 1979-12-28 Method and apparatus for aftertreatment of textile sheet by application of microwaves

Publications (2)

Publication Number Publication Date
EP0031862A1 EP0031862A1 (en) 1981-07-15
EP0031862B1 true EP0031862B1 (en) 1984-02-08

Family

ID=8186549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790850116 Expired EP0031862B1 (en) 1979-12-28 1979-12-28 Method and apparatus for aftertreatment of textile sheet by application of microwaves

Country Status (2)

Country Link
EP (1) EP0031862B1 (en)
DE (1) DE2966649D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674300B2 (en) 2006-12-28 2010-03-09 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US7740666B2 (en) 2006-12-28 2010-06-22 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US8182552B2 (en) 2006-12-28 2012-05-22 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US8632613B2 (en) 2007-12-27 2014-01-21 Kimberly-Clark Worldwide, Inc. Process for applying one or more treatment agents to a textile web

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0063203A1 (en) * 1981-04-16 1982-10-27 The Ichikin, Ltd. Method and apparatus for treatment of textile sheet material by application of microwaves
EP0065057A1 (en) * 1981-05-18 1982-11-24 The Ichikin, Ltd. Method and apparatus for continuous treatment of textile sheet material by application of microwaves
EP0065058A1 (en) * 1981-05-18 1982-11-24 The Ichikin, Ltd. Improved method and apparatus for aftertreatment of a printed textile sheet by application of microwaves
GB8608183D0 (en) * 1986-04-03 1986-05-08 Clantex Ltd Knitted fabric separating machines
FR2874473B1 (en) * 2004-08-19 2008-10-10 Michel Boulard METHOD AND DEVICE FOR THERMALLY PROCESSING FLEXIBLE MATERIAL
EP3587648A1 (en) * 2018-06-21 2020-01-01 Imogo AB A discontinuous process for dyeing and/or finishing a textile material and corresponding apparatus
GB202109538D0 (en) * 2021-07-01 2021-08-18 Alchemie Tech Ltd Improvements in or relating to textile dyeing

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704972A (en) * 1950-02-21 1954-03-03 Rydboholms Aktiebolag Improvements in method and means of dyeing textile materials
GB817134A (en) * 1954-11-13 1959-07-22 Rydboholms Aktiebolag Improvements in or relating to the dyeing of textile material
GB947280A (en) * 1962-10-01 1964-01-22 Kurt Koerber Method and apparatus for drying tobacco or tobacco-containing articles
FR1344538A (en) * 1962-11-08 1963-11-29 Ciba Geigy Process for dyeing and printing fibrous textile materials using reactive dyes
GB1124787A (en) * 1964-12-04 1968-08-21 Wolsey Ltd Improvements in or relating to processes of colouring textile materials
GB1257807A (en) * 1968-03-29 1971-12-22
GB1482755A (en) * 1975-07-07 1977-08-17 Electricity Council Methods of and apparatus for microwave heating threads or yarns
ES465205A1 (en) * 1976-12-24 1978-09-16 Hoechst Ag Process for the continuous dyeing of textile webs pre-heated with infra-red or micro-waves
GB1567111A (en) * 1978-02-13 1980-05-08 Dawson Int Radio-frequency textile drying method and apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7674300B2 (en) 2006-12-28 2010-03-09 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US7740666B2 (en) 2006-12-28 2010-06-22 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US8182552B2 (en) 2006-12-28 2012-05-22 Kimberly-Clark Worldwide, Inc. Process for dyeing a textile web
US8632613B2 (en) 2007-12-27 2014-01-21 Kimberly-Clark Worldwide, Inc. Process for applying one or more treatment agents to a textile web

Also Published As

Publication number Publication date
EP0031862A1 (en) 1981-07-15
DE2966649D1 (en) 1984-03-15

Similar Documents

Publication Publication Date Title
US4274209A (en) Apparatus for improved aftertreatment of textile material by application of microwaves
US4425718A (en) Apparatus for development and fixation of dyes with a printed textile sheet by application of microwave emanation
US4365422A (en) Method and apparatus for continual treatment of textile sheet material by application of microwaves
EP0031862B1 (en) Method and apparatus for aftertreatment of textile sheet by application of microwaves
US5913904A (en) Jig-type textile finishing apparatus
DE1460466A1 (en) Process for dyeing fibrous textiles
EP0063203A1 (en) Method and apparatus for treatment of textile sheet material by application of microwaves
EP0065058A1 (en) Improved method and apparatus for aftertreatment of a printed textile sheet by application of microwaves
EP0065057A1 (en) Method and apparatus for continuous treatment of textile sheet material by application of microwaves
US4907310A (en) Installation for the continuous processing of at least one textile yarn
KR840000351B1 (en) Improved method and apparatus for aftertreatment of textile material by application of microwaves
GB2067614A (en) A method of and apparatus for uniformly arranging the nap or pile of a cloth
KR840001400B1 (en) Improved apparatus for treatment of textile sheet material by application of microwaves
KR840001401B1 (en) A method for after treatment of a printed textile sheet by application of microwaves
JPS58163770A (en) Steam treating apparatus of fabric
JP2000220080A (en) Dyeing with vat dye and dyeing apparatus
JP3155070B2 (en) Continuous heat treatment equipment for fabric
KR920006466B1 (en) Continuous universal finishing-off apparatus for linner and silk
JPS5870763A (en) Steam treatment of continuous widened fabric
JPH06272158A (en) Apparatus for wet-heat treatment of textile product
JPS5825784B2 (en) Fabric coloring method
SU1726601A1 (en) Apparatus for liquid and thermal treatment of moving textile material
SU1023012A1 (en) Device for fixing dye substance on textile material
CA2009882A1 (en) Treatment unit of cloth and treatment apparatus
AT166438B (en) Method for fixing vat dyes and device for carrying out the method

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT

17P Request for examination filed

Effective date: 19810812

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR GB IT

REF Corresponds to:

Ref document number: 2966649

Country of ref document: DE

Date of ref document: 19840315

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19921221

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19921231

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930118

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19930211

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19931228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19931231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19931228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19940901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST