EP0099105B1 - Procédé pour le lissage des surfaces des feuilles ou profilés calandrés ou extrudés en matière thermoplastique - Google Patents

Procédé pour le lissage des surfaces des feuilles ou profilés calandrés ou extrudés en matière thermoplastique Download PDF

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Publication number
EP0099105B1
EP0099105B1 EP83106820A EP83106820A EP0099105B1 EP 0099105 B1 EP0099105 B1 EP 0099105B1 EP 83106820 A EP83106820 A EP 83106820A EP 83106820 A EP83106820 A EP 83106820A EP 0099105 B1 EP0099105 B1 EP 0099105B1
Authority
EP
European Patent Office
Prior art keywords
grinding
process according
profile
amounts
plastics
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
EP83106820A
Other languages
German (de)
English (en)
Other versions
EP0099105A1 (fr
Inventor
Kurt Dr. Allner
Bernhard Dr. Kraemer
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.)
Huels Troisdorf AG
Dynamit Nobel AG
Original Assignee
Huels Troisdorf AG
Dynamit Nobel AG
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 Huels Troisdorf AG, Dynamit Nobel AG filed Critical Huels Troisdorf AG
Priority to AT83106820T priority Critical patent/ATE25030T1/de
Publication of EP0099105A1 publication Critical patent/EP0099105A1/fr
Application granted granted Critical
Publication of EP0099105B1 publication Critical patent/EP0099105B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground

Definitions

  • the invention relates to a method for smoothing surfaces according to the preamble of claim 1.
  • grinding is understood to mean mechanical, metal-cutting or abrasion-related surface processing of metals and plastics.
  • a suitable device for machining surface processing is described, for example, in DE-Z “Rubber and Rubber-Plastics •, 17th Year, No. 10/1964.
  • a surface is smoothed using a rotating and possibly oscillating grinding wheel roller.
  • An oscillating grinding wheel is also recommended in the Kunststofflexikon, Stoeckert, Carl Hanser Verlag, 1981, p. 455.
  • a disadvantage of the usual grinding processes is the occurrence of large amounts of abrasion, which leads to a reduction in the thickness of the treated surface and to a loss of material.
  • the invention is therefore based on the object of providing a method for smoothing surfaces of thermoplastic plastic sheets or profiles, in which, in comparison to known grinding, the usual abrasion and, in comparison to known embossing, the temperature effects which occur, which cause thermal stresses the core of the plastic sheet or profile is avoided.
  • a temperature effect on the core of the plastic web or profile is avoided, i. H. it is the plastic sheet or the plastic profile in the solidified, cooled state, d. H. processed at room temperature.
  • the method according to the invention works almost without abrasion. It is precisely the property of the plastic that it heats up when rubbed and tends to smear is exploited according to the invention in order to achieve a smoothing of the surface almost without abrasion.
  • process conditions in particular the feed speed, the peripheral speed of the grinding wheel rollers and the pressure acting on the plastic web, are important.
  • the surface can be treated by several successive smoothing processes when passing two or more grinding wheel rollers depending on the desired surface quality, grinding wheel rollers with the same conditions or different conditions can be provided, e.g. B. similar grinding wheel rollers or in particular with finer abrasive grain compared to the previous grinding wheel roller.
  • Abrasive disc rollers made of nonwovens impregnated with binders and abrasive grains, in particular plastic fibers, are preferably used. Silicon carbide, aluminum oxide, garnet, corundum or the like are particularly suitable as abrasive grains. Grinding wheel wafers, which are composed on the basis of fleece wheels, are advantageous to the desired length corresponding to the width of the web or profile to be smoothed.
  • the method according to the invention is a continuous method in which an extruded or calendered web or a profile is continuously smoothed. Depending on The quality and number of grinding wheel rollers can be used to achieve matt to high-gloss smooth surfaces. This also depends on the type of abrasive grains with which the grinding wheel rollers are equipped and the grain size, ie the grain size.
  • thermoplastic plastic surfaces of thermoplastics such as polyvinyl chloride, rigid PVC, soft PVC, polyolefins such as polyethylene, polypropylene, mentioned as examples
  • thermoplastics such as polyvinyl chloride, rigid PVC, soft PVC, polyolefins such as polyethylene, polypropylene, mentioned as examples
  • the fleece disks can, for example, be constructed from synthetic fibers as described in DE-OS-26 21 176.
  • the same grinding wheel rollers with abrasives and grains are used for the method according to the invention for smoothing plastic surfaces as for grinding metallic surfaces.
  • An adaptation is effected according to the invention by the technical process conditions of contact pressures and peripheral speeds on the thermoplastic and on the desired surface finish.
  • the method according to the invention it is also possible, but not necessary, in the method according to the invention to cool the surface by means of a cooling medium, in particular water, during the smoothing. It is advantageous to use an emulsion containing a cleaning agent and / or wax agent for the plastic as the cooling medium. In this way, in the method according to the invention for smoothing the surface, the surface can be sealed at the same time, the surface being sealed simultaneously with a thickness of 2 to 5 f.lm. Suitable emulsions for thermoplastic materials are wax combinations with little foaming, as are known as care products for floor coverings.
  • the method according to the invention for smoothing surfaces has proven itself in particular in the surface treatment of floor coverings made from highly filled soft PVC molding compositions which are produced by calendering or extruding or rolling.
  • the grinding wheel roller With a width of the floor covering web of 1 to 3 m, the grinding wheel roller has a corresponding width with a roller diameter between 100 and 500 mm.
  • FIG. 1 A device for carrying out the method according to the invention is shown schematically in FIG. 1
  • one or more rollers can be used by using different types of grinding wheel rollers and different fleece construction of the grinding wheels. Directional surface structures are avoided with simultaneous oscillation of the grinding wheel rollers.
  • the plastic web 1 is inserted and pulled past a pull-off or transport device, that is the pair of guide rollers 2, the pair of pull-off rollers 7 and the rotating conveyor belt 6, which serves as a counter-pressure bearing, into the smoothing device, comprising the grinding wheel rollers 5, 10.
  • a coolant feed device 3 for water or an emulsion containing an additional wax care agent is arranged in front of the grinding wheel roller 5.
  • a second grinding wheel roller 10 and possibly also a third one can be arranged, the grinding grains preferably becoming finer with each subsequent grinding wheel roller.
  • the peripheral speeds and also the oscillation frequencies can be the same or different, depending on the desired surface. This also applies to the pressure applied.
  • the surface in region 9 can be air-dried before the web or profile thus smoothed is cut to length and transported away.
  • FIG. 2 shows the surface of a calendered soft PVC web on a scale of 1:50. This surface should be smoothed.
  • FIG. 3 shows the surface smoothed according to the method according to German patent 2143135, also on a scale of 1:50.
  • the smoothing of the thermoplastic surface is in this case at a temperature of 170 ° C. with a contact pressure of 60 kg / cm 2 at Running speed of 6 m / min. This surface also shows considerable unevenness when enlarged.
  • FIG. 4 shows the surface smoothed by the process according to the invention on a scale of 1:50.
  • a grinding wheel roller with a grinding wheel diameter of 350 mm, made of plastic fleece with an abrasive grain of silicon carbide grain 280 is used.
  • Two passes were carried out at 10 m / s rotational speed of the grinding wheel rollers and 5 m / min transport speed and a contact pressure of 1 bar, the surface being leveled and smoothed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (6)

1. Procédé de polissage de surfaces de feuilles ou profilés de matière plastique thermoplastique, calandré ou extrudé, dans lequel on fait passer en continu la feuille ou le profilé de matière plastique solidifié, refroidi, sous une pression de serrage déterminée sur au moins une meule cylindrique tournant et oscillant perpendiculairement à la direction du transport, caractérisé par le fait que lors de l'avancement de la feuille ou du profilé de matière plastique avec une vitesse de 1 à 10 m/mn
la fréquence d'oscillation de la meule cylindrique est de 50 à 300 Hz,
sa vitesse périphérique est de 5 à 30 m/s et
la pression de serrage est de 0,1 à 3 bars.
2. Procédé selon la revendication 1, caractérisé par le fait que pendant le polissage, la surface est refroidie au moyen d'un milieu de refroidissement, en particulier l'eau.
3. Procédé selon la revendication 2, caractérisé par le fait qu'on utilise comme milieu de refroidissement une émulsion contenant un agent de nettoyage et/ou un détergent pour matière plastique.
4. Procédé selon l'une des revendications 1 à 3, caractérisé par le fait qu'on utilise des meules cylindriques constituées de non-tissés, en particulier en fibres de matière plastique, imprégnés d'un liant et de grains abrasifs.
5. Procédé selon l'une des revendications 1 à 4, caractérisé par .le fait qu'on utilise comme grains abrasifs du carbure de silicium, de l'oxyde d'aluminium, du grenat ou du corindon.
6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait que l'on fait passer la feuille ou le profilé sur deux ou trois meules cylindriques disposées les unes derrière les autres, les meules cylindriques successives présentant à chaque fois une granulation abrasive plus fine que la meule cylindrique précédente.
EP83106820A 1982-07-13 1983-07-12 Procédé pour le lissage des surfaces des feuilles ou profilés calandrés ou extrudés en matière thermoplastique Expired EP0099105B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83106820T ATE25030T1 (de) 1982-07-13 1983-07-12 Verfahren zum glaetten von oberflaechen von kalandrierten bzw. extrudierten thermoplastischen kunststoffbahnen oder -profilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3226102 1982-07-13
DE3226102A DE3226102C2 (de) 1982-07-13 1982-07-13 Verfahren zum Glätten von Oberflächen von kalandrierten bzw. extrudierten plastischen Kunststoffbahnen oder -profilen

Publications (2)

Publication Number Publication Date
EP0099105A1 EP0099105A1 (fr) 1984-01-25
EP0099105B1 true EP0099105B1 (fr) 1987-01-21

Family

ID=6168293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83106820A Expired EP0099105B1 (fr) 1982-07-13 1983-07-12 Procédé pour le lissage des surfaces des feuilles ou profilés calandrés ou extrudés en matière thermoplastique

Country Status (3)

Country Link
EP (1) EP0099105B1 (fr)
AT (1) ATE25030T1 (fr)
DE (2) DE3226102C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112676951A (zh) * 2020-12-24 2021-04-20 张家港保税区卓尔诺新材料科技有限公司 用于铝塑复合带的磨砂装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD28208A (fr) *
DE1078906B (de) * 1955-03-31 1960-03-31 Robert Buerkle & Co Maschinenf Vorrichtung zum Glaetten von Spachtelmasse od. dgl. auf plattenfoermigen Werkstuecken
AT210129B (de) * 1958-03-29 1960-07-11 Galon Aktiebolag Verfahren zur Oberflächenbehandlung von Kunststoffolien
DE2143135C3 (de) * 1971-08-28 1979-10-04 Dynamit Nobel Ag, 5210 Troisdorf Vorrichtung zum Prägen bzw. Glätten einer Oberflache von Bahnen aus Thermoplasten, die bei den Bearbeitungstemperaturen an den metallischen Prageflächen kleben
DE2728545A1 (de) * 1977-06-24 1979-01-11 Otto Tiemann Kg Poliermaschine fuer kunststoffprofile
GB2051663B (en) * 1979-01-10 1983-04-27 Asahi Chemical Ind Process for producing extruded rigid thermoplastic sheet having optically smooth surfaces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Kernstoff-Lexikon, K. Stöckert, 7. Auflage, 1981, Carl Hanser Verlag, Seite 455 *

Also Published As

Publication number Publication date
ATE25030T1 (de) 1987-02-15
DE3226102A1 (de) 1984-01-26
EP0099105A1 (fr) 1984-01-25
DE3369275D1 (en) 1987-02-26
DE3226102C2 (de) 1986-04-17

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