WO1982002512A1 - Procede et dispositif pour la transformation de dechets p.v.c. - Google Patents

Procede et dispositif pour la transformation de dechets p.v.c. Download PDF

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Publication number
WO1982002512A1
WO1982002512A1 PCT/CH1982/000012 CH8200012W WO8202512A1 WO 1982002512 A1 WO1982002512 A1 WO 1982002512A1 CH 8200012 W CH8200012 W CH 8200012W WO 8202512 A1 WO8202512 A1 WO 8202512A1
Authority
WO
WIPO (PCT)
Prior art keywords
rollers
roller
pvc
rotating
nip
Prior art date
Application number
PCT/CH1982/000012
Other languages
German (de)
English (en)
Inventor
Plastic Gmbh Granfish
Original Assignee
Nagy Laszlo
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 Nagy Laszlo filed Critical Nagy Laszlo
Publication of WO1982002512A1 publication Critical patent/WO1982002512A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • 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
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
    • B29B7/56—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/584—Component parts, details or accessories; Auxiliary operations for mixers with rollers, e.g. wedges, guides, pressing means, thermal conditioning
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/58—Component parts, details or accessories; Auxiliary operations
    • B29B7/66—Recycling the material
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • 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

  • the present invention relates to a method for processing PVC waste, which is obtained in irregular form during PVC film production, into films.
  • the PVC waste being passed through the nip between two rollers rotating in opposite directions and at different speeds.
  • the invention further relates to a device used to carry out this method with two rotating and counter-rotating rollers of unequal speed, the mutual distance of which forms a nip can be adjusted.
  • waste of irregular shape is produced in the context of the known kerf manufacturing and processing methods. These wastes are initially processed according to the method known today with regard to their further processing; granulated and then either fed to an extruder and formed into shaped parts or brought into sheet form in a directly heated rolling mill. Not only several separate machines and corresponding operating personnel are required to carry out these known methods, but also the
  • FIG. 1 is a simplified perspective view of a device for processing PVC waste
  • FIG. 10 is a schematic perspective illustration of a cooling system downstream of the device according to FIG. 1.
  • the device shown in perspective in FIG. 1 in its important components has a housing designated in its entirety with 1, which has a bottom 2 and two side walls 3 and 4. Furthermore, a cover 5 is provided which can be placed on the housing from above and closes the same in a heat-insulating manner. All mentioned wall parts of the housing 1 are preferably designed so that the housing has the lowest possible heat losses during operation.
  • a rolling mill which has two rotatably mounted rollers 6 and 7.
  • the rollers are connected in a known manner to a drive, not shown, and run in opposite directions, as indicated by the arrows.
  • the speed of the two rollers 6 and 7 is different, ie the roller 6 rotates at a relatively low speed n, while the higher speed N of the roller 7 in a preferred embodiment between 1.1C and 1.27 times that Speed n lies.
  • a box 8 placed in front of the housing 1 a known mechanism is accommodated, which allows the roller gap (gap width) between the two rollers 6 and 7 to be regulated by means of a hand crank 9.
  • a corresponding crank 10 acts on a similar mechanism provided on the side wall 4 of the housing.
  • it would also be possible to actuate the two adjustment mechanisms by means of a single hand crank or also by means of a drive device.
  • two boundary plates 11 and 12 are loosely suspended, so that these plates, the lower edges of which are approximately 2 mm away from the rollers 6 and 7, can be loosely pivoted about their upper suspension axes against stop bolts 28.
  • the two boundary plates 11 and 12 can also be lifted off the rollers and removed.
  • the limit plates are held at the aforementioned distance from the rollers by the stop bolts 28.
  • the device is further provided with two radiators 16 and 17, the shape of which is adapted to the pair of rollers 6/7 and can be placed over the rollers from above and below. In this operating position, the rollers are thus enclosed by the radiators 16 and 17.
  • the upper radiator is designated 16 'in its mounting position.
  • the radiators are preferably made of a material with high heat storage capacity and have an electric heating element. After the end of work, the radiators are placed on the rollers and switched on in good time by a timer, for example 1 to 2 hours before the start of operation. The radiators are also put on during breaks for heat insulation and additional heating. In this way, the temperature of the two rollers 6 and 7 consisting of solid steel can be brought to the desired initial temperature of approximately 80 ° C. at low cost.
  • the PVC waste to be processed ie the entire batch
  • the roller spacing (gap width) denoted by d in FIG. 3 is set to an optimal value, for example 0.5 to 1.5 mm.
  • the material is now conveyed downward through the roll gap, as shown in FIG. 3, the rolls heating up further due to friction and pressure. After this first pass of the material, approximately two thirds of the same are separated, while one third, as indicated by the dash-dotted line R 1 , is again applied to the whales from above.
  • the required dye or plasticizer can be added and processed with the web.
  • the cover 5 is put on so that the web material does not lose too much heat in the subsequent processing.
  • the web emerging from the nip is now around the faster rotating orphan 7 laid (arrow in Fig. 4) and first runs around with it until the coating adhering to the roller circumference has the desired thickness, which is less than the thickness of the end product to be produced (PVC film).
  • the covering is separated at one point and removed from the roller in the form of a roll or a stack 18.
  • the throughput time of the entire waste batch can be, for example, between 30 and 60 minutes.
  • the roller temperature rises constantly due to the roller pressure and friction.
  • the material bale 18 After the material bale 18 has reached a certain size, it is placed against the circumference of the roller 7, as shown in FIG. 6, and a first auxiliary roller 13 (cf. also FIG. 1) is hung into the device. The bale 18 thus rotates in contact with the roller 7 and the auxiliary roller 13 and grows gradually until the second auxiliary roller 14 and finally the third auxiliary roller 15 have to be used. Before the material located above the nip is completely used up, the bale 18 is placed on the two rollers 6 and 7, as shown in FIG. 7. The constantly rotating rollers 6 and 7 have now reached a temperature. which corresponds to the melting temperature of the PVC material.
  • the bale melts at the contact points designated 19 and 20 and the melting material flows down the circumference of the rotating orphans through the nip. (Fig. 8).
  • the width of the whale gap is now matched to the thickness of the desired PVC film, and so a film-like loading is formed on the circumference of the roller 7 lay F, which can be separated after a certain time and removed in the direction of the arrow (FIG. 9).
  • the film running off the roller 7 is passed through a cooling device which has a plurality of conveyor belts 21, 22 and 23 arranged one above the other and a plurality of fans 24, 25, 26. After the film F has passed through this cooling system, it is wound up on a roll 27.
  • the amount branched off during the first pass of the material does not of course have to be exactly one third of the total batch, but can, for example - vary between a quarter and the total of the batch depending on the type of material.
  • the described method has the advantage that PVC contaminated with foreign bodies can also be processed. Dyes, paper and various textile residues are embedded in the PVC material as they pass through the rolling mill and mixed intensively with this material, so that a homogeneous mass is created.
  • the preheating of the rollers 6/7 can also be done directly, i.e. by heating elements built into the rollers, e.g. Steam pipe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Lors de la fabrication et de la transformation de materiaux P.V.C. les dechets qui en resultent sont traites dans un laminoir compose de deux cylindres rotatifs (6, 7) tournant en sens inverse et avec des vitesses de rotation differentes, Les cylindres (6, 7) qui ne peuvent etre chauffes directement seront prechauffes a l'aide de corps de chauffe amovibles (16, 17) avec du courant bon marche durant la nuit Lors du fonctionnement leur temperature sera amenee par frottement et pression jusqu'au point de fusion du materiau P.V.C. Apres qu'une partie du chargement est transformee en une masse ayant une cohesion toute la charge est modelee pour prendre la forme d'un tapis et deposee sous forme d'un rouleau sur les cylindres. Le materiau fondant au contact avec les cylindres forme sur le pourtour du cylindre le plus rapide (7) une feuille qui est enlevee refroidie et enroulee.
PCT/CH1982/000012 1981-01-27 1982-01-27 Procede et dispositif pour la transformation de dechets p.v.c. WO1982002512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH52081 1981-01-27
CH520/81810127 1981-01-27

Publications (1)

Publication Number Publication Date
WO1982002512A1 true WO1982002512A1 (fr) 1982-08-05

Family

ID=4188881

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1982/000012 WO1982002512A1 (fr) 1981-01-27 1982-01-27 Procede et dispositif pour la transformation de dechets p.v.c.

Country Status (2)

Country Link
EP (1) EP0070285A1 (fr)
WO (1) WO1982002512A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350083A (en) * 1999-04-27 2000-11-22 Hannah Greenaway Sheet material made from recycled plastic
CN102435723A (zh) * 2011-09-22 2012-05-02 江苏巨业电缆有限公司 一种橡胶试验机
CN104070616A (zh) * 2014-06-25 2014-10-01 泉州誉城盛机械有限责任公司 联动eva自动翻料机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112123619B (zh) * 2020-09-08 2022-04-05 湖南连心科技有限公司 一种用于粉末涂料制备的挤出机进料装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936788A1 (de) * 1968-07-23 1970-01-29 Davy Plastics Machinery Ltd Verfahren und Vorrichtung zum Bearbeiten thermoplastischen Materials
US3548742A (en) * 1967-05-12 1970-12-22 Werner & Pfleiderer Apparatus for continuously processing pulverulent or granular feeds
DE2053695A1 (en) * 1970-11-02 1972-05-10 Continental Gummi Werke Ag Plastics processing roll pair - with plate opposite roll gap to prevent build up of material which does not pass through roll gap
FR2233161A1 (en) * 1973-06-18 1975-01-10 Stegmeier William Compacting thermoplastic foam to solid matl. - by contacting surface layer under pressure against fusion surface
US4158646A (en) * 1975-05-05 1979-06-19 The General Tire & Rubber Company Method for reprocessing scrap from fabric reinforced thermoplastic sheet
US4354068A (en) * 1980-02-04 1982-10-12 Texas Instruments Incorporated Long travel elastomer keyboard

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3548742A (en) * 1967-05-12 1970-12-22 Werner & Pfleiderer Apparatus for continuously processing pulverulent or granular feeds
DE1936788A1 (de) * 1968-07-23 1970-01-29 Davy Plastics Machinery Ltd Verfahren und Vorrichtung zum Bearbeiten thermoplastischen Materials
DE2053695A1 (en) * 1970-11-02 1972-05-10 Continental Gummi Werke Ag Plastics processing roll pair - with plate opposite roll gap to prevent build up of material which does not pass through roll gap
FR2233161A1 (en) * 1973-06-18 1975-01-10 Stegmeier William Compacting thermoplastic foam to solid matl. - by contacting surface layer under pressure against fusion surface
US4158646A (en) * 1975-05-05 1979-06-19 The General Tire & Rubber Company Method for reprocessing scrap from fabric reinforced thermoplastic sheet
US4354068A (en) * 1980-02-04 1982-10-12 Texas Instruments Incorporated Long travel elastomer keyboard

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2350083A (en) * 1999-04-27 2000-11-22 Hannah Greenaway Sheet material made from recycled plastic
GB2350083B (en) * 1999-04-27 2004-03-31 Hannah Greenaway Sheet material
CN102435723A (zh) * 2011-09-22 2012-05-02 江苏巨业电缆有限公司 一种橡胶试验机
CN104070616A (zh) * 2014-06-25 2014-10-01 泉州誉城盛机械有限责任公司 联动eva自动翻料机
CN104070616B (zh) * 2014-06-25 2017-01-11 泉州誉城盛机械有限责任公司 联动eva自动翻料机

Also Published As

Publication number Publication date
EP0070285A1 (fr) 1983-01-26

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