WO2000029132A1 - Procede de revetement permettant d'augmenter le frottement a la surface d'un article en resine de polyolefine - Google Patents

Procede de revetement permettant d'augmenter le frottement a la surface d'un article en resine de polyolefine Download PDF

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Publication number
WO2000029132A1
WO2000029132A1 PCT/GB1999/003800 GB9903800W WO0029132A1 WO 2000029132 A1 WO2000029132 A1 WO 2000029132A1 GB 9903800 W GB9903800 W GB 9903800W WO 0029132 A1 WO0029132 A1 WO 0029132A1
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WO
WIPO (PCT)
Prior art keywords
article
friction
olefinic resin
particulate
ethylene
Prior art date
Application number
PCT/GB1999/003800
Other languages
English (en)
Inventor
Kristian Helland
Rolf Kotterheinrich
Original Assignee
Borealis Technology Oy
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 Borealis Technology Oy filed Critical Borealis Technology Oy
Priority to AU10671/00A priority Critical patent/AU1067100A/en
Publication of WO2000029132A1 publication Critical patent/WO2000029132A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/02—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a matt or rough surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0025—Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
    • 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
    • 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
    • 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
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers

Definitions

  • This invention relates to a process for the preparation of a polyolefin article having increased surface friction and to articles made by such a process. Increased surface friction is achieved by incorporating particulate olefinic friction increasing elements into the surface of the article.
  • Polyolefins possess a unique combination of favourable properties obtainable at acceptable costs, and therefore their use is widespread in all manner of products.
  • a problem that may be encountered with polyolefin articles is their surfaces are relatively low-friction and are hence slippery. This may cause goods stacked on such surfaces to shift or slide during handling.
  • Plastic pallets and canisters are examples of products where this property may cause problems and potential safety risks .
  • WO 97/25250 discloses a polyolefin pallet having on its surface a friction-increasing material applied as strips around at least part of the entire outside surfaces of the pallet. While the friction material on top of the pallet deck prevents goods from sliding off the pallet, the friction material on the bottom surfaces prevents the pallet from sliding easily off truck forks during handling.
  • GB 1,540,679 describes a pallet or pallet part provided with antiskid members made from a thermoplastic elastomer.
  • the members may have different shapes and can be applied in different ways.
  • the member is a strip which may be glued or melted onto the surface, e.g. by being held in the mould during injection moulding of the pallet.
  • Another embodiment relates to cuts from an elastomeric material introduced in holes through the load-carrying deck so that the cuts protrude on the upper facing of the deck.
  • GB 1,420,222 relates to plastic pallets comprising at least one moulded plate made from rigid plastics.
  • the frictional characteristics of the outer surface thereof are increased by the incorporation of additives such as particles of rubber, timber or plastics, which project outward from the surface of the pallet.
  • Applicant has now surprisingly found a convenient and cost-effective way of increasing the surface friction of polyolefin articles by fusing a particulate olefinic resin material onto the surface, especially the external surface of the polyolefin article during the manufacturing thereof .
  • the invention provides a process for increasing the surface friction of an article made from a polyolefin resin, comprising:
  • the invention provides a manufactured article obtainable by a process as hereinbefore described.
  • the process of the present invention is preferably employed in the manufacture of any thick-walled article made from a polyolefin resin that possesses a surface that would benefit from an increased surface friction, e.g. a pallet.
  • Usual processing methods for manufacturing such articles are based on the processing of a selected thermoplastic polyolefin resins in an extruder and forming the extrudate while still in a molten state into a desired shape.
  • the body of polyolefin resin formed in step (i) of the process of the invention is preferably made via extrusion, this body may be formed be any other conventional means such as pouring into a mould.
  • an extruded parison is clamped between two mould halves that subsequently are closed and the parison is expanded against the walls of the mould by introducing pressurized gas by vacuum.
  • Articles manufactured in this manner include for example bottles, canisters and other larger containers.
  • the parison is laid flat and the obtained double-walled sheet is thermoformed in-line to a pallet, or to pallet parts that are assembled into a pallet.
  • This method is utilized in WO 97/25249 and WO 97/25250, the disclosures of which are incorporated herein by reference.
  • Sheets extruded from a flat sheet die may be used as such, or they may be thermoformed into desired products.
  • Extruded profiles of any shape, including hollow profiles like tubes or pipes, are given their final shape in the extrusion tool.
  • co-extrusion technology a number of layers may be extruded simultaneously and brought to melt together.
  • the material layers may be equal or different.
  • thermoplastic polyolefin resins may be used by the processing methods mentioned above and hence in the process of the invention.
  • Particularly suitable polyolefin resins include polypropylene (PP) homopolymers and copolymers, high-density polyethylene (HDPE) homopolymers and copolymers, low density polyethylene (LDPE) homopolymers, and blends thereof.
  • PP polypropylene
  • HDPE high-density polyethylene
  • LDPE low density polyethylene
  • the surface friction of articles made from polyolefin resins is increased by introducing onto the surface of the article friction increasing material in such a way that this will stick permanently to the surface. It is very important that the friction increasing material adheres strongly to the surface of the article.
  • any particulate olefinic resin material that sticks to the surface in question and thereby increases the surface friction of the article may be used.
  • particulate olefinic resin materials which are softer than the polyolefin resin employed to make the article body are used.
  • the friction-increasing material should be selected from material having a similar melting range to that of the polyolefin resin employed to manufacture the article.
  • Particularly suitable friction-increasing materials being compatible with most polyolefin resins include, but are not restricted to, ethylene-methyl acrylate copolymer (EMA) , ethylene-vinyl acetate copolymer (EVA) , ethylene-propylene-diene terpolymer (EPDM) , ethylene-butylacrylate copolymer (EBA) , ethylene-ethylacrylate copolymer (EEA) , ethylene-C 3 _ 10 -o;-olefin copolymer, styrene-ethylene-propylene copolymer (SEP) , and styrene-ethylene-butylene-styrene copolymer (SEBS) .
  • EMA ethylene-methyl acrylate copolymer
  • EVA ethylene-vinyl acetate copolymer
  • EPDM ethylene-propylene-diene terpolymer
  • EBA ethylene-buty
  • suitable friction-increasing materials may include the polyolefin elastomers marketed by DuPont Dow under the Trade name Engage, (e.g. grades 8180, 8150, 8100, 8200, 8400, 8452, 8411, 8003, 8585, 8401, 8440, 8480, 8450, 8550, 8402, 8540, 8445, 8403), EMA polymers marketed by Borealis under the tradename Borflex (e.g. grades OE5609, OE5613, OE5640, OE5614, OE5618, OE5475, OE5620, OE5625, OE5626), EEA polymers marketed by Borealis under the tradename Borflex (e.g.
  • the friction increasing material must be converted into particulate form to be employed in the process of the present invention. This may be achieved by a variety of methods, for example grinding the polymer in a mill to obtain the desired size fractions.
  • the polymer may also be used in a powder form as obtained directly from the polymerisation reactor.
  • the material is extruded through a narrow die and pelletized in a conventional way. Besides a narrow particle size distribution, this will also result in equal-shaped pellets.
  • the particle diameter, or length of elongated pellets preferably should not exceed about 2 mm and not be less than about 0.1 mm to obtain optimum results.
  • a preferred particle size range is from 0.1 mm to 1 mm. Small particle sizes are preferred when a rapid down-melting is required, and for example when a complete or continuous layer of friction increasing material on the surface of the article is desired.
  • the particulate olefinic friction increasing material is conveniently sprinkled onto the surface to which it is to be fastened.
  • the friction material may be sprinkled onto an extruded sheet or profile just downstream of the extrusion die.
  • the particles will then fuse to the extrudate and be further fastened through direct contact with in-line equipment.
  • nip rollers When extruding a sheet at least one pair of nip rollers is conventionally used as the haul off unit.
  • the particles fused to the surface of the sheet will be squeezed further into the surface when passing the rollers resulting in excellent adhesion.
  • the nip rollers may be heated to suitable temperatures to avoid quenching of the sheet .
  • any number of haul off rollers may be used, for instance a stack of three rollers or more. If the extrudate is a profile of any cross-section, for instance a pipe, conventional haul off devices like shaped rollers or rubber bands may be used, and they will also force the friction increasing particles into the surface of the article.
  • the friction increasing material can also be sprinkled onto a vertical downward moving extruded parison in a blow-moulding line, e.g. in the area of swelling just after the extrusion die. In this case the friction particles will be forced into the outside walls of the parison when this is expanded and formed in the mould. In this way large and small containers can be provided with non-slippery outside surfaces.
  • the particulate material may be administered onto the extrudate in a substantially closed compartment which envelops the extrudate downstream of the die exit .
  • the particles will then adhere to the surface of the profile around its entire circumference and be squeezed into the surface in the haul off device.
  • the friction increasing material may optionally be sprinkled onto the sheet in connection with the preheating step before the thermoforming step.
  • the friction increasing material may still be simply sprinkled onto the surface of the body at a temperature such that the friction increasing material fuses thereto.
  • the friction increasing material should be distributed evenly over the surface of the substrate.
  • the friction material may also cover not less than 1% of the surface area in contact with an object placed on the surface.
  • the friction material may also cover up to 100% of the entire surface area, preferably 10 to 30%.
  • an external surface of the article should be covered in a substantial number of friction increasing elements formed from the particulate olefinic resin, the elements being distributed randomly over the external surface.
  • just enough friction increasing material to cover the surface of an article may be used.
  • a thick layer of the material will not increase the friction and thus will be unnecessary.
  • the outside friction layer may also protect the base polymer from mechanical and environmental exposures .
  • An alternative method to sprinkling is to blow the friction material onto the body, preferably extrudate, in particular a parison, a pipe or similar, by the use of a controlled stream of compressed air or an inert gas.
  • Equipment used for sand blasting etc. may be used, but normally the air stream must be modified.
  • the friction increasing material may also be sprayed onto the body surface through a mask using conventional spray technology.
  • the friction increasing material may itself be made partially molten and may then fuse more readily with the polyolefin body.
  • the surface friction of the articles made by the process of the invention may also be enhanced by other means, for example incorporating friction increasing material along with the polyolefin rein from which the body is formed.
  • further friction increasing material may be incorporated by coextruding a blend of polyolefin resin and friction increasing material and said polyolefin resin to produce said body.
  • the friction material is a polymer resin
  • it may easily be coloured in a conventional way, for instance during the extrusion step when producing small pellets.
  • a final article having a mono- or multi-coloured spotted surface.
  • This may conveniently be used for identification purposes or for aesthetic reasons.
  • colour code the friction increasing material depending on the nature of the goods which will come into contact with the polyolefin article.
  • the article is a pallet designed to carry metal objects a particular colour of friction increasing material may be employed to inform the user that such a pallet is of particular use with metal objects.
  • the colours may provide camouflage.
  • the article may also be provided with a fluorescent or phosphorescent colour.
  • the present invention is particularly suited for use in connection with thick-walled articles made from semi-crystalline polyolefins, in particular polypropylene (PP) , high density polyethylene (HDPE) and low density polyethylene (LDPE) resins.
  • Typical articles that would benefit from an increased surface friction include for example all kinds of transport packages. It should in particular be mentioned: blow-moulded canisters of HDPE and VHDPE; extruded sheets of PP and HDPE; articles thermoformed from such sheets; plastic pallets and stacking trays; profiles made from various polyolefin resins; and pipes made from HDPE and LDPE .
  • the present invention is well suited for use in connection with plastic pallets manufactured by thermoforming extruded sheets into parts that are assembled to final pallets.
  • the article is a pallet
  • these are preferably prepared as described in W097/25249 or WO97/25250 which are herein incorporated by reference. It is particularly preferred if certain parts of the pallets are covered in friction material.
  • the pallet is formed from multicomponent runner/spacer and deck pieces as described in W097/25249
  • the length of the underside of the runner sections are preferably coated in a continuous layer of friction increasing material optionally tailored especially to grip concrete, wood or metal.
  • the surface deck of the pallet is preferably covered in stripes of friction increasing material, optionally colour coded and tailored to grip to the product to be stacked on the pallet.
  • the underside of the deck may be coated in friction increasing strips, optionally tailored to grip to truck forks.
  • the underside of the spacer may also be cover in a continuous layer of friction increasing material.
  • the runner, spacer and deck portions of the pallet may be coloured for practical or aesthetic reasons, e.g. to reflect the corporate colours of the pallet user.
  • the outer layers of the pallet described above are formed from a sandwich structure wherein a foamed layer is sandwiched between to polyolefin layers, the friction increasing material being present on the external surface of the pallet.
  • a PP resin was extruded as a sheet of 0.5 mm thickness.
  • the PP resin was a polypropylene block copolymer having a melt flow rate of 0.3 g/10 min (230°C, 2.16 kg), commercially available under the trade name of "Borealis BA 202E" from company Borealis AS, Norway.
  • the temperature in the polymer melt by the exit of the die was 225°C.
  • the sheet was fed between the three rollers, which had set temperatures of 68°C, 95°C and 90°C, respectively (from top to bottom) .
  • micro-pellets having an average size of 0.5 mm, made from an ethylene methyl acrylate copolymer (EMA) were sprinkled evenly onto the polypropylene sheet in an amount sufficient to cover approximately 30% of the surface area of the finished sheet.
  • the micro-pellets were sprinkled manually from a coarse sieve onto a tilted manually vibrated plate, the edge of which was positioned about 10 cm above the molten extrudate and about 10 cm from the die exit.
  • the EMA grade used contained 25% methyl acrylate and had a melt flow rate of 0.4 g/10 min (190°C, 2.16 kg). It is commercially available under the trade name of "Borflex EMA OE 5625" from company Borealis AS, Norway.
  • the EMA pellets melted into the polypropylene sheet, and they were further fastened when passing the nip between the rollers.
  • the EMA material became firmly fixed to the PP substrate.
  • the final sheet was winded up and cut into desired lengths .
  • Example 1 was repeated, except that instead of the EMA grade, an ethylene-propylene-diene terpolymer (EPDM) was employed.
  • EPDM ethylene-propylene-diene terpolymer
  • the EPDM grade used had a melt flow rate of 1.0 g/10 min and is available under the trade name of "Engage 8842" from DuPont Dow Elastomers, USA.
  • Example 1 was repeated, except that no friction-increasing material was sprinkled onto the polypropylene sheet, thus producing a pure PP sheet without any surface modifications.
  • the coefficient of sliding friction between two surfaces are determined.
  • One of the two substrates included in the test is fixed on the top of a horizontal table.
  • the other substrate is fixed to the bottom side of a block which is then placed with its bottom side on the first substrate.
  • the block is pulled along the top surface of the first substrate on top of the table at a constant speed. The required pulling force is recorded and the coefficient of friction calculated.
  • the coefficient of friction between two surfaces is expressed by an angle of inclination of an inclined plane.
  • a sheet of one of the two materials to be used in the test is fastened firmly to a plate having a length of about 0.5 m.
  • a test object (a box or similar) made from the other material to be tested is placed on the plate with one of its short sides along a transverse side of the plate. The plate is then inclined slowly by raising the end along which the tray is placed until the box just starts to slide. The angle of inclination is determined and the coefficient of friction calculated.
  • the EMA pellets were sprinkled onto the parison manually by letting an even stream of particles fall upon the parison from a device having a flat surface, the edge of which was shape similar to the shape of the parison.
  • the EMA pellets melted onto the surface of the parison.
  • the pellets were further pressed into the surface of the HDPE substrate.
  • Example 4 was repeated, except that no EMA pellets were applied, thus producing HDPE canisters without any surface modifications.
  • Tables 1 and 2 reveal that a PP sheet will get a significant increase in surface friction when EMA is introduced onto it surface, and EPDM gives a still better effect.
  • Tables 3 and 4 show a similar effect concerning HDPE.
  • a pallet made from PP or HDPE will be more safe in use when a friction material, such as EMA or EPDM, is fastened to its surface.
  • EMA EMA
  • EPDM a friction material
  • Tables 3 and 4 it can be seen that the coefficient of friction between e.g. HDPE canisters stacked onto each other will be low (0.2 in Table 3), but will increase substantially when the surface is modified with EMA.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne des articles en polyoléfine auxquels on peut conférer des surfaces glissantes. L'invention concerne également un procédé grâce auquel une matière augmentant le frottement est disposée à la surface d'un article en polyoléfine pour en augmenter le frottement à la surface. Le procédé consiste à: i) former un corps à partir d'une résine de polyoléfine; ii) appliquer la résine de polyoléfine particulaire sur une surface dudit article à une température telle que la résine de polyoléfine particulaire fusionne avec ledit corps; et iii) éventuellement modeler ledit corps pour lui donner une forme désirée.
PCT/GB1999/003800 1998-11-13 1999-11-15 Procede de revetement permettant d'augmenter le frottement a la surface d'un article en resine de polyolefine WO2000029132A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10671/00A AU1067100A (en) 1998-11-13 1999-11-15 Coating process for increasing the surface friction of an article made of polyolefin resin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO985317A NO985317D0 (no) 1998-11-13 1998-11-13 Polyolefin-basert gjenstand med modifisert overflate
NO985317 1998-11-13

Publications (1)

Publication Number Publication Date
WO2000029132A1 true WO2000029132A1 (fr) 2000-05-25

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Application Number Title Priority Date Filing Date
PCT/GB1999/003800 WO2000029132A1 (fr) 1998-11-13 1999-11-15 Procede de revetement permettant d'augmenter le frottement a la surface d'un article en resine de polyolefine

Country Status (3)

Country Link
AU (1) AU1067100A (fr)
NO (1) NO985317D0 (fr)
WO (1) WO2000029132A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1409154A1 (fr) * 2001-07-20 2004-04-21 Michael J. Stevenson Liaison de materiaux granulaires a des surfaces polyolefiniques
EP1708825A1 (fr) * 2003-10-28 2006-10-11 Ecoglo Limited Procede de creation d'un dispositif photoluminescent antiderapant
US11707874B2 (en) 2016-09-23 2023-07-25 S.I.P.A Societa' Industrializzazione Progettazione e Automazione S.p.A. Apparatus for cooling and handling preforms in plastic material

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EP1409154A1 (fr) * 2001-07-20 2004-04-21 Michael J. Stevenson Liaison de materiaux granulaires a des surfaces polyolefiniques
EP1409154A4 (fr) * 2001-07-20 2005-01-05 Michael J Stevenson Liaison de materiaux granulaires a des surfaces polyolefiniques
EP1708825A1 (fr) * 2003-10-28 2006-10-11 Ecoglo Limited Procede de creation d'un dispositif photoluminescent antiderapant
EP1708825A4 (fr) * 2003-10-28 2007-06-27 Ecoglo Ltd Procede de creation d'un dispositif photoluminescent antiderapant
US11707874B2 (en) 2016-09-23 2023-07-25 S.I.P.A Societa' Industrializzazione Progettazione e Automazione S.p.A. Apparatus for cooling and handling preforms in plastic material

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