Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
  • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
  • B29B17/0005—Direct recuperation and re-use of scrap material during moulding operation, i.e. feed-back of used material
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D1/00—Treatment of filament-forming or like material
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
  • D01F13/04—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of synthetic polymers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2007/00—Flat articles, e.g. films or sheets
  • B29L2007/007—Narrow strips, e.g. ribbons, tapes, bands
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/731—Filamentary material, i.e. comprised of a single element, e.g. filaments, strands, threads, fibres
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
  • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
  • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
  • Y02W30/00—Technologies for solid waste management
  • Y02W30/50—Reuse, recycling or recovery technologies
  • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

• waste fibers result in various process stages, which are unsuitable for further processing.
• waste products arise, for. B. when piecing and setting down, when winding, stretching, texturing and other processing stages.
• This waste represents a considerable • cost factor, so that efforts have long been made to recycle the waste.
• DD-PS 78 052 describes a process for the reuse of waste from polyamide fiber production for textile purposes, in which the polyamide waste, which is contaminated with preparations, matting agents and air dust particles, and which is slightly thermally oxidatively damaged, is reused to produce chemical fibers by compacting the waste at about 200 ° C.
• the resulting granulate is spun to a final water content of less than 0.05% by means of a rust or an extruder spinning machine.
• a relatively large amount of energy is required for compression at higher temperatures and in particular for drying, which makes the method more expensive.
• the invention had the object of "the invention to simplify a process of the type mentioned and thereby save insbe ⁇ sondere energy. This object is achieved by the characterizing features of claim 1 or of claim 2.
• the melt of the fresh polymer can consist of polymers which are different from those of the waste; However, the metering of the melt from the waste materials into a melt of polymers of the same type and the same properties is preferred.
• the ratio of molten waste to the fresh polymer melt can be between 1:20 and 1: 2, in particular between 1:10 and 1: 4.
• the two melts are mixed together intensively after they have been brought together, e.g. B. using a Statik ⁇ mixer, and then spun in the usual way.
• fresh polymer from a storage container 1 passes through the intermediate container 2 into the extruder 3, where it is melted.
• the extruder presses the melt into the heated line 9.
• compressed fiber waste is conveyed from the storage container 4 into the rust melt spinning head 5.
• the adhering water and possibly further adhering low-molecular organic substances such as preparation oils evaporate.
• the melt obtained in this way is pressed through a filter 8 into the line 9 by means of a gear metering pump 6, which is driven by the controllable motor 7, combines there with the main melt of fresh polymer and is uniformly mixed with it in the intensive mixer 10.
• the mixture of both melts is then spun over the spinning heads 11.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Textile Engineering (AREA)
• Environmental & Geological Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
• Artificial Filaments (AREA)
• Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
• Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6156301

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (5)

Citations (4)

Family Cites Families (1)

• 1982
  • 1982-02-20 DE DE3206203A patent/DE3206203C2/de not_active Expired
• 1983
  • 1983-02-04 GR GR70499A patent/GR78066B/el unknown
  • 1983-02-14 ES ES519767A patent/ES519767A0/es active Granted
  • 1983-02-17 PT PT7625583A patent/PT76255A/pt unknown
  • 1983-02-18 WO PCT/DE1983/000032 patent/WO1983002964A1/de not_active Ceased
  • 1983-02-18 JP JP58500702A patent/JPS59500224A/ja active Pending
  • 1983-02-18 EP EP19830101544 patent/EP0087133A3/de not_active Withdrawn

Patent Citations (4)

Also Published As

Similar Documents

Legal Events