Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
  • D06F35/005—Methods for washing, rinsing or spin-drying
  • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only

Definitions

• Certain textiles such as outerwear in particular, are usually subjected to dry cleaning with the help of perchlorethylene.
• perchlorethylene since the use of perchlorethylene has been suspected to be carcinogenic, the regulations have recently been tightened considerably. In addition, it is difficult to remove completely from the fiber during the post-treatment of the clothes in the cleaning.
• the object underlying the invention was therefore to find an alternative for dry cleaning with perchlorethylene, according to which, in particular, outer clothing can be cleaned without any significant shrinkage.
• the method according to the invention for cleaning textiles, in particular outer garments, with a prewash bath, a main wash bath and a rinsing bath in a drum rotating in a drum housing with liquid passages in the drum jacket, the drum alternatingly having run times and stand pauses, is characterized in that the stand breaks 20 to 80 seconds and the drum makes two to five revolutions between the breaks, that the rotational speeds of the drum generate a centrifugal force of 0.8 to 0.9 G and a drum is used whose inner diameter is 60 to 120 cm.
• the process according to the invention works with aqueous washing liquors and completely avoids the use of organic solvents, such as perchlorethylene. Surprisingly, if the process conditions described are observed, it is also possible to clean outer garments with such an aqueous washing liquor without the same shrinking. So far it has been unusual to clean outer garments with aqueous washing liquors, so that the process according to the invention overcomes an existing technical prejudice.
• the rhythm of breaks and revolutions described causes the textiles in the rotating drum to be taken up and from there to fall to the bottom of the drum. A certain drop height and thus a certain drum diameter is required for this.
• the inside diameter of the drum is preferably 70 to 100 cm, particularly 80 to 90 cm.
• the rotational speed of the drum have the centrifugal force of 0.8 to 0.9 G each, i.e.. H. generated within each sequence of pauses and revolutions, within the first revolution.
• a preferred further development of the method also consists in the fact that the liquid level is essentially outside the drum in the drum housing and that the bath liquid is pumped from the bottom of the drum to its upper region and is applied there to the drum content. Pumping the bath liquid creates a kind of sprinkling of the textiles to be treated in the drum. Maintaining the liquid level essentially outside the drum in the drum housing is known in some washing machines as a so-called "no dip". This measure is advantageous in conjunction with the other procedural measures mentioned, since when the textiles to be treated are immersed in the wash liquor, less washing action and higher matting are achieved.
• the aforementioned drum diameter means that the distance from the surface of the drum sump to the location of the bath liquid application is kept in the range from 60 to 120 cm.
• the treatment times (running times + stand breaks) in the prewash bath, main wash bath and rinsing bath are each 5 to 15 minutes. With shorter treatment times, the washing effect is reduced, longer treatment times have no additional positive effect. It is particularly expedient if the treatment time in the prewash and rinse baths is 5 to 7 min and in the main wash bath 8 to 12 min.
• the duration of the stand breaks is expediently 30 to 60 seconds.
• the number of revolutions between the stand breaks is expediently 2 to 3.
• the pumped bath liquid is introduced before being introduced into the drum and thus before being placed on the drum stop through a lint filter to continuously remove the lint accumulating in the sump of the drum.
• bath liquid in the washing liquors, it is not advisable to use too little bath liquid in the washing liquors, as this would impair the washing effect.
• a coherent, i.e. H. results in free pumping current in the pumping line from air bubble interruptions.
• the loading of the drum is advantageously such that 5 to 25, preferably 7 to 14 kg of textiles (as a dry weight) are introduced per batch.
• the process according to the invention shows a strongly superior washing action with comparable to less felt shrinkage than other processes which work with aqueous washing liquors and works completely without organic solvents, such as perchlorethylene. Compared to other washing processes with aqueous washing liquors, it can lead to a significant saving in water consumption.
• Washing machine standard household washing machine 4.5 kg load weight (42 cm drum diameter); Wool program

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatment Of Fiber Materials (AREA)
• Control Of Washing Machine And Dryer (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Detail Structures Of Washing Machines And Dryers (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6410644

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (1)

Citations (5)

Family Cites Families (4)

• 1990
  • 1990-07-20 DE DE4023053A patent/DE4023053A1/de not_active Withdrawn
• 1991
  • 1991-07-04 AT AT91111096T patent/ATE122415T1/de not_active IP Right Cessation
  • 1991-07-04 EP EP91111096A patent/EP0468242B1/fr not_active Expired - Lifetime
  • 1991-07-04 DE DE59105422T patent/DE59105422D1/de not_active Expired - Fee Related

Patent Citations (5)

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