NO844637L - USING A PART OF A POLYETHYL PLATE PROFILE AS A SLIDE - Google Patents

USING A PART OF A POLYETHYL PLATE PROFILE AS A SLIDE

Info

Publication number
NO844637L
NO844637L NO844637A NO844637A NO844637L NO 844637 L NO844637 L NO 844637L NO 844637 A NO844637 A NO 844637A NO 844637 A NO844637 A NO 844637A NO 844637 L NO844637 L NO 844637L
Authority
NO
Norway
Prior art keywords
sliding
sliding part
extrusion
polyethylene
stated
Prior art date
Application number
NO844637A
Other languages
Norwegian (no)
Inventor
Hans Geng
Original Assignee
Plastik Maschbau Gmbh Co Kg
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 Plastik Maschbau Gmbh Co Kg filed Critical Plastik Maschbau Gmbh Co Kg
Publication of NO844637L publication Critical patent/NO844637L/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/056—Materials for the running sole
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/475—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pistons, accumulators or press rams
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • 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
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0063—Density
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0088—Molecular weight
    • 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
    • B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
    • B29L2031/5263—Skis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Microscoopes, Condenser (AREA)

Description

Foreliggende oppfinnelse angår anvendelse av en del eller et parti av et plastprofil av polyetylen, særlig et flatt profil, som glidedel. Slike glidedeler anvendes på forskjellige tekniske områder, der det opptrer glidende friksjon, i størst mulig grad uten glidemiddel eller smøremiddel . Glidedelen festes gjerne til en holder ved hjelp av forsenkede skruer, klebing eller på annen måte. Særlig utstyres ski for ski-sport med en slik glidedel på undersiden. Det er vesentlig at glidedelen ved de opptredende glidepåkjenninger har liten friksjonskoeffisient og lang brukstid. The present invention relates to the use of a part or part of a polyethylene plastic profile, in particular a flat profile, as a sliding part. Such sliding parts are used in various technical areas, where sliding friction occurs, to the greatest extent possible without lubricants or lubricants. The sliding part is usually attached to a holder using countersunk screws, gluing or in another way. In particular, skis for ski sports are equipped with such a sliding part on the underside. It is essential that the sliding part has a low coefficient of friction and a long service life when subjected to sliding stresses.

Innen rammen av den kjente teknikk formes plastprofilet ved avskalling eller spalting av en presset rondell eller en presset plate. Det er også vanlig å fremstille slike glidedeler av en plastblokk ved avsponende bearbeiding. Dette er omstendelig og dessuten fyller glidedelene bare ufullstendig de krav som stilles ved glidepåkjenning. Ofte tilfredsstiller friksjonskoeffisienten ikke kravene, og dessuten er brukstiden for kort. For å forbedre friksjonskoeffisienten er det kjent å -polere overflaten ved hjelp av særskilte midler, og å fylle porer i massen. Selv når slike foranstaltninger gjennomføres er ofte friksjonskoeffisienten og brukstiden ikke i henhold til det som kreves. Within the framework of the known technique, the plastic profile is formed by peeling or splitting a pressed ring or a pressed plate. It is also common to produce such sliding parts from a plastic block by chipping. This is cumbersome and, moreover, the sliding parts only partially meet the requirements for sliding stress. Often the coefficient of friction does not meet the requirements, and moreover the service life is too short. In order to improve the coefficient of friction, it is known to polish the surface using special agents, and to fill pores in the mass. Even when such measures are implemented, the coefficient of friction and the service life are often not in accordance with what is required.

Formålet med oppfinnelsen er å komme frem til et plastprofil som til bruk som glideprofil utmerker seg ved ekstremt lav friksjonskoeffisient og overraskende lang brukstid. The purpose of the invention is to arrive at a plastic profile which, for use as a sliding profile, is distinguished by an extremely low coefficient of friction and a surprisingly long service life.

I henhold til oppfinnelsen er dette oppnådd ved anvendelsen av en del eller et parti av et plastprofil av polyetylen, særlig av et flatt profil, idet profilet er fremstilt ved ekstrudering, som glidedel, idet veggtykkelsen (med unntak av eventuelle ribber) er mindre enn 3 mm og at molekylvekten ligger over 1 million. Uttrykket polyetylen betegner særlig lavtrykkspolyetylen, men oppfinnelsen er ikke begrenset til anvendelsen av lavtrykkspolyetylen, men omfatter også høytrykks- polyetylen. Ekstruderingen kan utføres ved bruk av et stempel (se DE-PS 2 .829 .232 ) . According to the invention, this has been achieved by the use of a part or part of a polyethylene plastic profile, in particular a flat profile, as the profile is produced by extrusion, as a sliding part, the wall thickness (with the exception of any ribs) being less than 3 mm and that the molecular weight is above 1 million. The term polyethylene particularly denotes low-pressure polyethylene, but the invention is not limited to the use of low-pressure polyethylene, but also includes high-pressure polyethylene. The extrusion can be carried out using a stamp (see DE-PS 2 .829 .232 ).

Glidedelen som anvendes i henhold til oppfinnelsen er særlig egnet ved temperaturer under 0°C, og kan også anordnes på undersiden av en ski, for eksempel ved klebing. For å forbedre den rent mekaniske styrke til glidedelen, kan i henhold til oppfinnelsen polyetylenet blandes med forsterkningsfibre før ekstruderingen. Disse fibre kan være mineralske fibre, karbonfibre, metall- eller plastfibre. På en overraskende måte endres ikke friksjonskoeffisienten på overflaten av glidedelen ved slik blanding, fordi forsterkningsfibrene blir liggende inne i glidedelen og påvirker ikke overflatestruk-turen. Det vil forstås at det ikke tilsettes for store meng-der forsterkningsfibre. Et optimalt kompromiss mellom styrke-forhold og friksjonskoeffisient kan finnes ved forsøk. Innen rammen av oppfinnelsen kan polyetylenet før ekstruderingen blandes med finkornede eller finfibrede, ledende substanser. På denne måte kan det uten å påvirke brukstiden og friksjonskoeffisienten oppnås at glidedelen er tilstrekkelig antista-tisk. The sliding part used according to the invention is particularly suitable at temperatures below 0°C, and can also be arranged on the underside of a ski, for example by gluing. In order to improve the purely mechanical strength of the sliding part, according to the invention the polyethylene can be mixed with reinforcing fibers before extrusion. These fibers can be mineral fibers, carbon fibers, metal or plastic fibers. In a surprising way, the coefficient of friction on the surface of the sliding part does not change with such a mixture, because the reinforcing fibers remain inside the sliding part and do not affect the surface structure. It will be understood that excessive amounts of reinforcing fibers are not added. An optimal compromise between strength ratio and friction coefficient can be found by trial. Within the scope of the invention, the polyethylene can be mixed with fine-grained or fine-fibred conductive substances before extrusion. In this way, without affecting the service life and the coefficient of friction, it can be achieved that the sliding part is sufficiently antistatic.

De oppnådde fordeler ligger i at en glidedel i henhold til oppfinnelsen utmerker seg ved en overraskende lav friksjonskoeffisient og overraskende lang brukstid eller slitestyrke. Dette skyldes antageligvis at ved ekstruderingen dannes, under hensyntagen til de særlige trekk som er vesentlige ved oppfinnelsen, særskilte molekylorienteringer og intermolekylære bindinger, som positivt påvirker friksjonskoeffisienten og brukstiden. Det oppnås særlig lave verdier med hensyn til friksjonskoeffisienten og særlig høye verdier med hensyn til brukstiden når glidedelen anvendes slik at retningen til ekstruderingen faller sammen med retningen til glidepåkjenningen på glidedelen. Også når de nevnte retninger er mot-satte oppnås imidlertid også særlige fordeler. Glidepåkjenning med hovedkomponenter på tvers av ekstruderingsretningen bør helt unngås . The advantages achieved lie in the fact that a sliding part according to the invention is distinguished by a surprisingly low coefficient of friction and a surprisingly long service life or wear resistance. This is presumably due to the fact that during extrusion, taking into account the special features that are essential to the invention, special molecular orientations and intermolecular bonds are formed, which positively affect the coefficient of friction and the service life. Particularly low values are achieved with regard to the coefficient of friction and particularly high values with regard to the service life when the sliding part is used so that the direction of the extrusion coincides with the direction of the sliding stress on the sliding part. Even when the aforementioned directions are opposite, however, special advantages are also achieved. Sliding stress with main components across the direction of extrusion should be completely avoided.

Claims (5)

1. Anvendelse av en del eller et parti av et plastprofil av polyetylen, særlig et flatt profil, som er fremstilt ved ekstrudering, som glidedel, idet veggtykkelsen er mindre enn 3 mm og molekylvekten ligger over 1 million.1. Use of a part or part of a polyethylene plastic profile, in particular a flat profile, which has been produced by extrusion, as a sliding part, the wall thickness being less than 3 mm and the molecular weight being over 1 million. 2. Anvendelse som angitt i krav 1, idet ekstruderingsretningen og retningen for glidepåkjenningen på glidedelen stemmer overens.2. Application as stated in claim 1, in that the direction of extrusion and the direction of the sliding stress on the sliding part agree. 3. Anvendelse som angitt i krav 1 eller 2, idet glidedelen benyttes ved temperaturer under 0°C.3. Use as stated in claim 1 or 2, the sliding part being used at temperatures below 0°C. 4. Anvendelse som angitt i krav 1-3, idet polyetylenet før ekstruderingen blandes med forsterkningsfibre .4. Use as stated in claims 1-3, the polyethylene being mixed with reinforcing fibers before extrusion. 5. Anvendelse som angitt i krav 1-4, idet polyetylenet før ekstruderingen blandes med finkornede eller finfibrede, ledende substanser.5. Use as stated in claims 1-4, in that the polyethylene is mixed with fine-grained or fine-fibred conductive substances before extrusion.
NO844637A 1984-01-19 1984-11-21 USING A PART OF A POLYETHYL PLATE PROFILE AS A SLIDE NO844637L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843401669 DE3401669A1 (en) 1984-01-19 1984-01-19 Sliding component in the form of a section from a plastic profile made from polyethylene

Publications (1)

Publication Number Publication Date
NO844637L true NO844637L (en) 1985-07-22

Family

ID=6225300

Family Applications (1)

Application Number Title Priority Date Filing Date
NO844637A NO844637L (en) 1984-01-19 1984-11-21 USING A PART OF A POLYETHYL PLATE PROFILE AS A SLIDE

Country Status (6)

Country Link
DE (1) DE3401669A1 (en)
FI (1) FI844757L (en)
FR (1) FR2560113A1 (en)
IT (1) IT1183108B (en)
NO (1) NO844637L (en)
SE (1) SE8500250L (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2414185A1 (en) * 1974-03-23 1975-10-09 Loba Holmenkol Chemie Lhc RUNNING SURFACE FOR SPORTS EQUIPMENT FOR GLIDING AND WALKING OVER SNOW AND ICE SURFACES, E.G. SKI
SE7806170L (en) * 1977-06-10 1978-12-11 Norsk Skiforsk GRASS-FREE SKI COAT OF PLASTIC AND KIT FOR ITS MANUFACTURE
DE2829232C2 (en) * 1978-07-03 1983-10-20 Ruhrchemie Ag, 4200 Oberhausen Process for the production of moldings from high molecular weight low-pressure polyethylene
SE7903117L (en) * 1979-04-09 1980-10-10 Electrolux Ab KIT AND DEVICE FOR A COMBINED REFRIGERATOR AND FREEZER FURNITURE

Also Published As

Publication number Publication date
SE8500250L (en) 1985-07-20
FR2560113A1 (en) 1985-08-30
FI844757L (en) 1985-07-20
IT8519074A0 (en) 1985-01-11
SE8500250D0 (en) 1985-01-18
FI844757A0 (en) 1984-12-03
DE3401669A1 (en) 1985-08-01
IT1183108B (en) 1987-10-05
IT8519074A1 (en) 1986-07-11

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