US20070125601A1 - Light-weight scaffold board and method for producing the same - Google Patents

Light-weight scaffold board and method for producing the same Download PDF

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Publication number
US20070125601A1
US20070125601A1 US10/509,649 US50964903A US2007125601A1 US 20070125601 A1 US20070125601 A1 US 20070125601A1 US 50964903 A US50964903 A US 50964903A US 2007125601 A1 US2007125601 A1 US 2007125601A1
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United States
Prior art keywords
plate
holes
thermoplastic
perforated
light
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Abandoned
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US10/509,649
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English (en)
Inventor
Gunter Lutze
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Uti Holding and Management AG
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Uti Holding and Management 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
Priority claimed from DE2002114485 external-priority patent/DE10214485A1/de
Priority claimed from DE2002115606 external-priority patent/DE10215606A1/de
Priority claimed from DE10216569A external-priority patent/DE10216569A1/de
Priority claimed from DE2002117118 external-priority patent/DE10217118A1/de
Priority claimed from DE10240384A external-priority patent/DE10240384A1/de
Priority claimed from DE10300886A external-priority patent/DE10300886A1/de
Priority claimed from DE10300888A external-priority patent/DE10300888A1/de
Application filed by Uti Holding and Management AG filed Critical Uti Holding and Management AG
Assigned to UTI HOLDING + MANAGEMENT AG reassignment UTI HOLDING + MANAGEMENT AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LÜTZE, GÜNTER W.
Publication of US20070125601A1 publication Critical patent/US20070125601A1/en
Abandoned legal-status Critical Current

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    • 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
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • B29C43/203—Making multilayered articles
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
    • B29C70/882—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding
    • B29C70/885—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced partly or totally electrically conductive, e.g. for EMI shielding with incorporated metallic wires, nets, films or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/153—Platforms made of plastics, with or without reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/66—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of facade constructions, e.g. wall constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/67—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of roof constructions
    • 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
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3433—Feeding the material to the mould or the compression means using dispensing heads, e.g. extruders, placed over or apart from the moulds
    • 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
    • B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G2001/155—Platforms with an access hatch for getting through from one level to another
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Definitions

  • Scaffolding plates, planks, or boards are currently manufactured either from massive wood, sheet steel or aluminum, or profiled steel or aluminum, the attempt having been made for many years, in order to save weight, to lay, insert, fit, rivet, screw, glue, weld, or attach in another way thin plywood plates, which have been made weatherproof, in frames manufactured from profiles instead of the profiled sheet metal over the entire length and width.
  • 10 to 15 cm high lateral protection parts currently made of the same material, preferably wood, at the level of the scaffolding plates, as well as railings at the appropriate height and, if necessary, tarpaulins or nets behind them are attached on the sides of the scaffold construction facing away from the building, which then result in the finished scaffold when considered overall.
  • the scaffolding plates of whatever material, have shared one disadvantage: the craftsmen, who must deal with them daily, consider the plates to be too heavy for laying—particularly at the typical lengths of approximately 250 or 300 cm. The laying and hanging work is still to be done manually, in spite of the possible transport of the plate stack using cranes and other aids.
  • the lightweight plastics often have the property of having too low a modulus of elasticity without reinforcement, so that the sag of the plates, which is fixed at one hundredth of the length for safety reasons, at least in Europe, may only be achieved through significant thicknesses of the plates or through costly reinforcements.
  • the low permissible sag of the plates is required because when the plates, which are often very narrow, are laid next to one another, tripping points arise under load, which result in increased danger of accidents.
  • composite plates and methods for their manufacture from various materials which comprise a support core as a spacer for the upper and lower cover layers
  • the support core is typically made of foam, honeycomb, caps, boxes, or other webs, positioned linearly or offset, made of plastic, aluminum, glass, wood or wood fibers, or paper
  • the cover layers are made of wood, metal, or duroplastics or thermoplastics with or without reinforcement.
  • Light metal honeycombs are glued into composite plates made of sheet steel or aluminum in one or more layers to manufacture planks for scaffold construction (Utility Model G 9207297.6).
  • Edge terminuses for composite plates made of thermoplastic are manufactured using hot-press tools by pressing and fusing the upper and lower cover layers and compressing the material in each case into an individual edge (WO 01/19604 A1). These methods are known in the prior art, but are very time-consuming and therefore costly.
  • the present invention is therefore concerned both with the weight problem and with the problem of high costs in the development of a novel manufacturing method, which enables the advantages of easy moldability of the plastic overall, the light weight in relation to wood, steel, and aluminum, and, if appropriate materials are used, the combination of as many individuals steps of the production as possible.
  • a “light scaffolding plate” is thus represented in this description which, by using plastic honeycomb, foam, or web plates or a mixture thereof with welded, reinforced, or non-reinforced cover layers and hot-molded edge terminuses provides a light scaffolding plate which already comprises holders and covering structure, which almost corresponds in price to the typical wood or steel plank plates, and is completely recyclable without problems, since it is largely produced from a single thermoplastic material or from two materials having melting points significantly deviating from one another, wherein the basic raw materials can be reused.
  • the plastic scaffolding plate which weighs approximately a third of the weight of the wood or steel plank plate, is easy to transport and mount, already has the lateral protection part, which is to be separately mounted, molded on if necessary, and is permanently UV resistant and weatherproof without further processing or impregnation and is slip-proof and safe to walk on in any weather through the structure embossed in the running surface.
  • a directly molded-on lateral protection part simultaneously additionally contributes significantly to the improved static strength of the scaffolding plate without additional costs, further reduces the transport weight to the construction site, and saves significant additional mounting costs.
  • typically plates having a climb-through opening are also used, which usually have significantly higher weight than the scaffolding plate, simply because of the frames and the hinges.
  • the flap of such a climb-through opening, the frame, and the hinge which runs on all or part of the length or width of the frame and the flap, are manufactured from the same material by compressing it, the plate in the typical plate thickness, the frame by fusing the plate material and the cover layers into a static folded profile matching the requirements, if a more cost-effective solution comprised of light metal, preferably aluminum frames placed on the edges of the plate or embedded in the plastic, does not suggest itself because of the length of the plate.
  • the hinge of the plate is also permanently welded in or on through a thermal treatment of plate material with or without reinforcement in or on the cover layers of flap and frame, so that this important climb-through plate is also lightweight and has the same height as the typical scaffolding plate and does not have any localized protrusions as tripping points.
  • a revolutionary advantage in relation to typical handling which saves mounting costs and offers greater safety, particularly in smaller rolling or traveling scaffolds, is also the permanent connection of the four lateral protection parts to the scaffolding board and the incorporation of the climb-through opening into this scaffolding plate.
  • the static values of this frame construction may then additionally be used for the overall statics of such types of scaffolds.
  • the question of drainage arising here is solved through drainage openings introduced into the plate through thermal deformation in the manufacturing procedure.
  • the plates may be colored permanently and weatherproof in any color. Identifications and company advertisements may be introduced or applied permanently through nonwoven material print embedded in the plastic, through hot embossing occurring in the manufacturing procedure, or simply through subsequent screen printing or tampon printing.
  • Scaffolding plates, planks, or boards are typically hung directly in the transverse girders of the scaffolds or, at lower thickness, are laid, inserted, or riveted in suspendable frames.
  • Scaffolding plates or scaffolding plate frames depending on the scaffold type, have either screwed, placed, or welded metal sheets having claws or round grooves for suspension form U-profiles, which are open on top, and from pipes, or metal sheets having perforations for hanging from multiple bolts welded or screwed next to one another on the transverse girders.
  • Both the massive scaffolding plates made of wood and also lighter plates in perforated sheet steel or aluminum embodiments have, originating from the high material weight of the plate, a weight which requires significant use of energy for the scaffold mounting, particularly for the mounting team, even at half the typical scaffolding width of approximately 30 cm depending on length.
  • the plate according to the present invention no longer has this main disadvantage, specifically the high weight of each individual plate, even at double plate width, and is usable for any typical scaffold system having the particular specifically molded suspension devices. It is still a disadvantage here that a different type of suspension is required for every system, which results in multiple productions.
  • the plate is manufactured only in one to two different plate thicknesses and mainly in double or triple the scaffolding plate width of approximately 60 or 90 cm and two to three scaffolding plate lengths having only one single suspension deformation of the plate ends.
  • This suspension deformation which is realized through compression of the plate material, allows precisely fitted hanging by means of the holes from the pin or bolt system, precisely fitted hanging and clamping with the claws in the U-profile of the claw system, and precisely fitted hanging from the pipe system.
  • two typical scaffolding plates currently having approximately 30 cm width because of the high scaffolding plate weight may be combined easily, even at lengths of 250 and 300 cm or more, into a single plate of approximately 60 cm width, or even into significantly larger plates, and these may be compressed in one pass to have a suspension device on the plate ends.
  • a further advantage is that these plates may be hot pressed in a typical hot press both individually one after another, as well as, at appropriate width of the press, with multiple rows of plates next to one another having the molded universal suspensions in one work cycle, including the upper and lower cover layers and possibly necessary edge terminuses.
  • statically required additional webs may also be welded at the height of the plate thickness within the support core material, so that the entire scaffolding plate is made of a single, homogeneous material.
  • an additional frame of the scaffolding plate may be dispensed with, since it is self-supporting even at greater lengths and matches the statically required conditions, wherein, for this purpose, the structure of the thermoplastic reinforced edge closures and, if necessary, the insertion of an additional, also reinforced web or even, at large plate lengths, a round, square, or rectangular pipe or U-profile made of the same reinforced material or light metal, at the height of the support core therein or at the edge of the support core as an edge terminus, covering all static requirements and particularly the requirements on the modulus of elasticity.
  • damage to the scaffolding plate may be repaired easily using the soldering iron and thermoplastic repair material and, if there is a honeycomb as the support core, because of the restriction of damage to a few honeycomb tubes, no danger to the quality or service life of the plate is to be expected.
  • thermoplastic cover layer by laying a perforated metal plate, which is thermally bonded on one or two sides either solely with one or two thermoplastic layers or also with a thermoplastic support core, so that either a perforated plate having thermoplastic cover layer on one or two sides or a complete sandwich plate having perforated plate cover layers on one or two sides, or even thermoplastic cover layers enclosing a perforated plate are produced in one single hot and possibly cold pressing pass, is considered a further novelty in reinforcing the plastic cover layers.
  • thermoplastic bonding layers from the honeycomb as the support core to the perforated plate may either be laid in the form of thermoplastic films or plates laid between the support core and the perforated plate or, if the support cores or spacers are closed, may be laid, rolled, scattered, or sprayed in powder form during the production process.
  • honeycomb material which already has during the manufacturing process an upper and lower complete or partial hole covering or broad beads made of thermoplastic material at the hole edges and whose molten volume is used to bond the perforated sheet then to the honeycomb core thermoplastically, is even better.
  • honeycombs may be manufactured at the required honeycomb plate thicknesses in the direct extrusion method and may also be included at once in the production process.
  • thermoplastic material The reason that a permanent bond of the perforated plate is possible through the melting process even without it being enclosed by thermoplastic is the presence of edge depressions toward the hole centers in this case, which, during the fusing process, not only non-positively bond the perforated plate material flat in the hot gluing method, but rather also by enclosing the edge beads around the entire circumference over the beads inward toward projecting perforated plate parts of all holes of the plate, without thermoplastic material being able to or having to exit on the top side of the cover layer, unless complete enclosing of the perforated plate with thermoplastic material is desired.
  • thermoplastic cover layer material with the height of the perforated plate or with the height of the perforated plate and the projecting edge depression.
  • the perforated metal cover layers may also receive structures on their surface even during manufacture and may be provided externally with raised or depressed structures during pressing on one or both sides, e.g., even with an anti-slip covering.
  • a colored design may also be produced here through permanent coloration of the thermoplastic material visible through the perforation, or even of the perforated metal plate. Therefore, for example, in the case of with company products, permanent identification is possible, which is good as theft protection and also for advertising purposes.
  • the openings of the perforated metal plates may have different shapes, such as round holes, oval or box-shaped holes, oblong or square holes, with and without round corners or a mixture thereof, crescent, cross, or diamond shapes, may be positioned in linear or offset rows, diagonally offset rows, or similar way, the relative free hole area making up approximately half of the plate, but also more or less.
  • thermoplastic material upon the hot pressing lays around the existing beads or hole edges tapered toward the hole center during the fusing process and therefore bonds the perforated metal plates to the thermoplastic material immovably and homogeneously in a formfitting way.
  • thermoplastic material from the top cover layer to the cover layer lying below the perforated plate and, via the latter or even directly from the top layer, a thermoplastic bond to the support core is provided via the perforations.
  • the perforated metal plate has a permanent seat through the hole edge formation or within the thermoplastic bonding or cover material
  • the bond between perforated plate and thermoplastic may also be optimized by a special treatment of the cover material, for example, using a primer (adhesion promoter) or other roughening treatment even during the rolling procedure, so that even strong bending and impact strains of the light scaffolding plate may be permanently absorbed.
  • perforated metal plate which has a high bending strength even at low material thickness and with low weight in the composite, even with low overall panel thickness, peak values may be achieved which otherwise can only be achieved through massive material use having high weights and panel thicknesses.
  • the nonpositive bonding of the metal cover layer may be dispensed with in the event of later lower load of the light scaffolding plate
  • the direct bonding of the metal cover layer, which is primed or provided with an adhesion promoter, to the thermoplastic support core suggests itself.
  • a weatherproof bond also arises here and, if textured sheets are used, the necessary slip safety of the plates may also be achieved, which offers sufficient safety with and without an additional structured plastic layer possibly applied during the pressing procedure.
  • the previously cited deformations of the plates are also possible here.
  • additives in the thermoplastic material of the cover layers, but also the support core result in properties which the base material does not necessarily have.
  • Additives such as short or long glass fibers, glass balls, talcum, wood flour, wollastonite, zinc oxide, polyester fibers, metal powder, mica, calcium carbonate, and the like result in greater strength, higher modulus of elasticity, and influence the modulus of bending and creep, hardness, dimensional stability in the heat, tearing and tensile strength, compression resistance, dimensional stability, density, fatigue strength, thermal conductivity, and melting viscosity, reduction of stretching, impact toughness, impact strength when notched, creep tendency, shrinkage, thermal expansion, abrasion resistance, UV and weather resistance, melt flow index, etc.
  • the light scaffolding plates may also have lateral parts molded on directly through beveling downward or upward or in another way in any arbitrary length, even having recesses, laterally or all around on top, on the bottom, or on one side on top, and on the other side on the bottom, so that finished products arise either already in the hot pressing process or in a second deformation process.
  • Achieving the static object of absorbing the load forces in a thin scaffolding plate without using frames may also be realized, as described according to the present invention, by incorporating the 10 to 15 cm high lateral parts, which are prescribed in scaffolding anyway, as a supporting web on one side and an upward or downward bevel at 5 to 10 cm height on the other side, without the thickness of the plate being expanded unnecessarily for this purpose.
  • the cover and lateral part thicknesses may also be kept very low, which also has an effect on the weight per square meter.
  • the light scaffolding plate weighs 3.5 kg per running meter of scaffold length at a plate thickness of up to 15 mm, including lateral parts, and only 4.2 kg at a plate thickness of 20 mm, i.e., a reduction to a fraction of the weight in relation to current typical scaffolding plates. This is also true at other dimensions.
  • the weight reduction is even higher considering that the additional lateral protection parts to be transported or mounted are dispensed with.
  • the light scaffolding plate or parts thereof are made of colorless, thermoplastic material which is transparent to light.
  • the outer cover layer of the lateral protection part may be equipped with a projecting overlap to the particular neighboring lateral plate, or even upper or lower plate, which is set to elastically and permanently press on the other plate. This is permanently possible with pre-tension using an appropriately oriented and hot-pressed fiberglass-reinforced material such as the plate.
  • the lateral protection parts and possibly placed lateral parts may particularly also be provided with an inscription permanently introduced in the thermoplastic layer, also for advertising purposes and for identification, whether by printing a nonwoven material or by attaching a hot-pressed structure or something similar as already described.
  • a metal plate may be provided with longitudinal continuous depressions or beads or may receive hook-like or claw-like shoulders, distributed on the sheet surface, toward the support core by means of efficient welding methods.
  • the present invention enables, in addition to saving weight-related transport costs, saving significant mounting and handling costs, and a novel type of scaffold planking, securing, and design.
  • the typical dust protection planking using film which is easily damaged and typically usable only a few times or even only once, may also be manufactured more stably and cost-effectively through reusable lateral cover plates.
  • the “light scaffolding plate” according to the present invention having a perforated metal cover layer particularly becomes a homogeneously bonded plate if complete enclosing of the plate with hole edge depressions, which may be enclosed by the thermoplastic bonding layer, is dispensed with.
  • lobe holes, slotted bridge holes, projecting holes, or other types of holes in which the thermoplastic material of the cover or bonding layer engages behind the perforated sheet at multiple points without engaging the entire surface of the cover plate may be applied, in particular in the form of round holes, square holes, or oblong, hexagonal, or polygonal holes, diamond holes, triangular holes, star-shaped holes, or key holes, having rounded corners or being angled.
  • the individual openings or holes of the sheets may be applied to the plate or to the strip made of steel, aluminum, or other metal or duroplastic, which is intended for later cutting, through stamping, drilling, milling, sawing, or other cutting, combinations thereof, or even other methods in all possible cell sizes.
  • thermoplastic plate or film material which has tightly arrayed endless glass fibers across the entire plate length.
  • This material is also usable in multiple layers and, laid alternately in layers longitudinally and transversely, may have identical results as fabric reinforcement.
  • the hot press and/or the cold press or a flat plate tool which travels through both presses with the pressed product or is passed through, may be designed with a heat-resistant, rubber-like, compressing and subsequently reexpanding, separable layer over the entire area, which causes the thermoplastic material of the bonding or cover layer to be pressed back in the direction of the bottom of the perforated plate at the perforated points, so that the perforated plate top remains free of material. This also results in a savings in material, in addition to other effects.
  • a further way of producing the light scaffolding plates from only one single material, both for the cover layers and for the support cores and all required reinforcing and secondary parts, is to use a homogeneous polymer monolith.
  • a method for manufacturing a homogeneous polymer monolith in which a structure of oriented polymer fibers is kept at elevated temperature, approximately 5-2° C. below the melting point, and a part of the polymer is melted and subsequently compressed or compacted within a predefined time window and subsequently cooled back to the ambient temperature by leaving it in air, is disclosed in EP 0531473 B1. These are melt-spun homopolymer or copolymer fibers, which, as the compacted product, then have a density of at least 90% of the original fiber density.
  • An additional invention is thus possibly dispensing with fiberglass or other reinforcement using similar reinforcement materials or the use of perforated metal sheets as the top covering in light plates, which do not match the thermoplastic main material of the plates and only contribute to stiffening the plate, by using a thermoplastic material specially prepared according to the above-mentioned method.
  • This is performed by using a multilayered thermoplastic material, made of the thermoplastic main material and altered with bidirectional molecular orientation, that provides a significant savings in weight for the cover layers from highly-oriented materially-identical reinforcement elements with the same stiffness and strength as in a fiberglass reinforcement.
  • By dispensing with a non-thermoplastic reinforcement material absolute recyclability of the entire light plate is provided.
  • this material for the support cores as well, i.e., for the honeycomb, cap, box, or web manufacture, is also novel.
  • the honeycomb the honeycomb cross-section or, in other support components, the spacing of the individual spacing bodies to one another may be doubled to quadrupled, without the carrying capacity of the plate being impaired.
  • this prepared material whose structure has been changed, to make the material thickness lower and therefore the light plates even lighter while maintaining the typically required dimensions.
  • the support components such as tubes (also connected into honeycombs), caps, webs or corrugations, boxes, or the like in the deep-drawing or hot-pressing methods, for example, while simultaneously increasing the strength, significant material savings related to weight may be achieved and it is then possible above all, during the further processing of the material into the complete light plate while largely maintaining the necessary deep-drawing or hot-pressing temperature, subsequently to thermally press the cover layers made of the same material with the required pressure on the support core, even without nonwoven material or adhesive intermediate layer, and simultaneously or subsequently to provide the pressed part with the required structures, e.g., edge closures or a slip-proof structure and fittings, molded from the same material.
  • the required structures e.g., edge closures or a slip-proof structure and fittings
  • thermoplastic material that remains in identical or significantly greater thickness than the material of the actual support body during the deep-drawing or hot-pressing procedure of the tubes, caps, webs or corrugations, boxes, or the like on the top or bottom, is then simultaneously used to reinforce the cover layers and is simultaneously used here in a linear longitudinal or transverse orientation for further, significant improvement of the stiffness and bending resistance and thus makes it possible to achieve an optimum material use, that is favorable in regard to weight and naturally affects the price.
  • a further consideration according to the present invention is to find a simple and cost-effective method technology, which allows a tight bond of the perforated metal plate to a thermoplastic and a statically active support layer as a support core in a simple way.
  • the support core which is comprised either of known thermoplastically deformable plastic honeycombs, tubes, caps, boxes, webs, corrugations, or similar structure plates or even plastic foam plates, is hot pressed directly with one or two perforated sheets without an intermediate layer and cooled under pressure, so that the support core material itself deforms into the shapes required for the tight bond.
  • thermoplastic support core All properties which are expected from the cover layer that is visible later, such as color, weather, temperature, and UV resistance, elasticity, tensile and bending properties, as well as thermoplastic deformability under pressure, etc. are already provided here by the thermoplastic support core, which also positively affects the strength and bending properties and particularly the overall weight in large part.
  • any final thickness of the light scaffolding plate may be determined through the height of the support core before the pressing step. Inaccuracies and tolerances of the support core plates are compensated by predefining the final height, as are slight inaccuracies in the flatness of the perforated metal sheets or the burrs formed when perforating. Furthermore, by increasing the height of the support core material, the thickness of the bonding thermoplastic layer and therefore the stiffness and bending strength, i.e., the stability of the finished plate, may be influenced.
  • both the hole sizes of the honeycombs, boxes, or tubes, and the spacing of the webs or caps, etc., in the support core may be taken into consideration completely and a tight, permanently stable bond may always be achieved.
  • the weight of the finished plate may also particularly be tailored to the application, so that optimum results may be achieved in regard to the lightness of the plates.
  • the light scaffolding plate also has further possible uses as a light plate. It is suitable not only as a scaffolding plate, but rather also as a floor and lining plate and for multiple other plates and supporting profiles which are loaded in regard to stiffness and bending resistance. Thus, such plates may be used as floor plates, shelves, insulation plates, sound protection plates, and plates for other areas of application, which must withstand static strains and also suffice for decorative purposes.
  • a further important function may be assumed by the plate as a vacuum panel, by using a gas-permeable support core and a gas-impermeable film which encloses it completely.
  • the “light scaffolding plate” In order to manufacture, in a stationary plate press, the “light scaffolding plate” from a thermoplastic support core or other spacers, which determines the color of the plate, in over-sized thickness and necessary width and length in the middle, over which only a sheet metal, a perforated sheet metal, or a sinkhole perforated sheet metal is laid on top and bottom, in a single hot-pressing and cold-pressing pass using temperatures for heating and cooling, which are tailored to the different melting points of the materials and the material thicknesses, in direct contact with the hot and subsequently cold plates of the press and/or the possibly required structure, it is necessary to lay the perforated sheet metal on a structured separating film with the sinking of the holes in the direction of the side facing away from the lower press plate and lay the support core thereon in an over-sized thickness.
  • the second perforated sheet metal is then laid on top with the hole sinking in the direction of the support core and pressed with the additional structured separating film laid in the direction of the plate and thermoplastically bonded to the panel, whose later thickness and color design has been previously determined.
  • the plate receives the final, sunken or raised surface structure and shape and, if corresponding molding tools are used, additional molded parts such as claws, grooves, and other suspension fittings, closures, reinforcements, inserts, and web inclusions, edges, and holes.
  • the method is analogous with the difference that the support core has a thickness closer to the final thickness of the plate with its cover layers and only the cover layers are placed on top and bottom between the perforated sheet metal or sinkhole perforated sheet and the support core.
  • the liquid thermoplastic compound generating from the thermoplastic cover layer and/or the surface of the support core flows through the holes of the perforated sheet metal or single perforated sheet metal, the depressions in the plate are filled, and during the subsequent cooling, the solid rivets or connection pins to the flat plastic layer required for the bodily formfitting bond or the clawing arise.
  • An improvement of the stability, the modulus of elasticity, and the UV and weather resistance of the plate is influenced by a greater thickness and change of the material properties of the cover layer and/or of the support core and by enlarging or reducing the hole size and/or sinking the holes and/or through offset arrangement of the holes in the direction of the later strain of the scaffolding plate.
  • a continuously running extruding process for the manufacture of the honeycomb support core, with or without flattened plate surface, or a continuously running deep-drawing procedure for a support core in tube, cap, box, web, corrugated, or similar structure is carried out upstream. Furthermore, introducing slots in the honeycomb structure may be carried out upstream.
  • This sequence may be performed in a single, continuously running method with subsequent hot pressing of the cover layers of identical or different thickness from the coil or as a plate in the continuous or plate press cycled method, with or without intermediate layers of nonwoven material, textile, or adhesive layers possibly also from the coil, with or without the application of depressed or raised structures for surface coatings, made of structured separating film positioned or entrained between the materials and the rollers or press plates, such as a slide protection structure, and/or perforated sheet metal or sinkhole perforated sheet metal or similar layers, notching slots, holes, or the like, the subsequent edging and fitting molding and the trimming or cutting to length while maintaining or introducing the required, exactly controlled melting temperature at the surfaces to be fused and material underneath to be fused and subsequent cooling in the subsequent cold press, each under electronic or manual control and precise consideration of the temperature window required for the material.
  • a “light scaffolding plate” having a fiber-reinforced cover layer is performed in the same way, only the fiber-reinforced thermoplastic cover layer being introduced instead of the normal thermoplastic cover layer and the perforated sheet metal or sinkhole perforated sheet metal being dispensed with.
  • FIG. 1 light plate in section
  • FIG. 2 perforated metal sheet top covering (sections)
  • FIG. 3 21 visible surface of the perforated metal sheet top covering
  • FIG. 4 31 visible surface of the perforated metal sheet top covering
  • FIG. 5 41 top perforated metal sheet
  • FIG. 6 51 perforated metal sheet
  • FIG. 7 54 perforated metal sheet
  • FIGS. 8 + 9 types of perforated metal sheets bonded to thermoplastic
  • FIG. 10 81 section through slotted bridge perforation
  • FIG. 11 91 top view of offset slotted bridge arrangement
  • FIG. 12 simple light scaffolding plate in construction, section
  • FIGS. 17 + 18 scaffolding plate having four lateral protection parts and climb-through flap, side views, cross-sections
  • FIG. 19 top view
  • FIG. 20 suspension fittings, thicker and thinner plate
  • FIG. 21 scaffolding plates having upward and downward bevels, view of plate end of thin plate before stacking, thick plate after stacking
  • FIG. 22 rear lateral part, view
  • FIGS. 23 + 25 light scaffolding plate, special forms
  • FIGS. 25-28 types of edge terminus
  • FIG. 29 double honeycomb plate as the support core
  • FIG. 30 light scaffolding plate, top view of latticed molding of claw and round groove part
  • FIG. 31 light scaffolding plate, top view of latticed engaging round groove
  • FIG. 32 section through the material to be pressed before the pressing step
  • FIG. 33 section through the “light scaffolding plate”, compressed only from perforated metal sheet and support core
  • FIG. 34 surface of the plate having sinkholes before the pressing
  • FIG. 35 surfaces of the light scaffolding plate
  • FIG. 36 different forms of the perforated metal sheet before/after the pressing step longitudinal section through the perforated metal sheet
  • FIG. 37 cross-section through the perforated metal sheet
  • FIG. 38 top view of perforated metal sheet with hole sinking and linear bead sinking
  • FIG. 39 top view of perforated metal sheet having linear depression and additional hole sinking
  • FIG. 40 top view of perforated metal sheet having linear depression and hole sinking
  • FIG. 41 surfaces having contours alternately in the metal sheet or in the plastic
  • FIG. 42 front view of light scaffolding plate having lateral protection part and board with openings
  • FIG. 43 light scaffolding plate having combined lateral protection part and plank, view from plate beginning
  • FIG. 44 light scaffolding plate having lateral protection part and placed plank, cross-section behind plate beginning
  • FIG. 45 top view of surface of perforated metal plate having slotted bridge perforations, with thermoplastic filling
  • FIG. 46 slotted bridge hole longitudinal section and cross-section, after hot pressing, filled up like enclosure with thermoplastic material
  • FIG. 47 bead-like cover sheet configuration, overturned
  • FIG. 48 bulge-like cover sheet configuration
  • FIG. 49 hook-like shoulders on the sheet
  • FIG. 50 connection points of the lateral protection and lateral parts with elastic overlap which continues the cover layer and presses on the next plate
  • FIG. 51 glued support core
  • FIG. 52 lateral protection system construction having overlaps to the surrounding scaffolding panels
  • FIGS. 53 + 54 fiberglass layers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Civil Engineering (AREA)
  • Composite Materials (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
US10/509,649 2002-03-13 2003-03-30 Light-weight scaffold board and method for producing the same Abandoned US20070125601A1 (en)

Applications Claiming Priority (21)

Application Number Priority Date Filing Date Title
DE102-21-250.3 2002-03-13
DE2002114485 DE10214485A1 (de) 2002-03-30 2002-03-30 Universal-Gerüstplatte
DE102-15-606.9 2002-04-09
DE2002115606 DE10215606A1 (de) 2002-04-09 2002-04-09 Thermoplastisch verbundene Lochmetall-Leichtbauplatte
DE10216569A DE10216569A1 (de) 2002-04-09 2002-04-13 Thermoplastisch verbundene Lochmetall-Leichtbauplatte
DE102-16-569.6 2002-04-13
DE2002117118 DE10217118A1 (de) 2002-04-17 2002-04-17 Stapelbare Universal-Gerüstleichtplatte mit und ohne Seitenschutz, Verfahren zu deren Herstellung
DE102-17-118.1 2002-04-17
DE10221250 2002-05-13
DE102-14-485.0 2002-05-30
DE10225439 2002-06-08
DE102-25-439.7 2002-06-08
DE102-26-703.0 2002-06-16
DE10226703 2002-06-16
DE10240384A DE10240384A1 (de) 2002-08-31 2002-08-31 Mehrschichtige Leicht-Verbundplatte aus Metall und thermoplastischem Kunststoff und Verfahren zu deren Herstellung
DE102-40-384.8 2002-08-31
DE10300886A DE10300886A1 (de) 2002-05-13 2003-01-11 Thermoplastische Universal-Leichtplatte mit und ohne Seitenauf- oder Abkantungen und Verfahren zu deren Herstellung
DE103-00-888.8 2003-01-11
DE103-00-886.1 2003-01-11
DE10300888A DE10300888A1 (de) 2002-06-08 2003-01-11 Hochleistungs-Lochmetall-Kunststoffplatte und Verfahren zu deren Herstellung
PCT/DE2003/001048 WO2003083352A2 (fr) 2002-03-30 2003-03-30 Panneau d'echafaudage leger et procede de fabrication

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US20070125601A1 true US20070125601A1 (en) 2007-06-07

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EP (1) EP1490219A2 (fr)
AU (1) AU2003236771A1 (fr)
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WO (1) WO2003083352A2 (fr)

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US20110027605A1 (en) * 2009-07-29 2011-02-03 Chin-Hsing Horng Metal sheet member having high plastic bonding strength
US20140057067A1 (en) * 2008-10-28 2014-02-27 Woodwelding Ag Method for producing a lightweight component, and support element
WO2014041184A1 (fr) * 2012-09-17 2014-03-20 Peri Gmbh Plateau-trappe d'accès pour échafaudage
US20140311777A1 (en) * 2011-11-16 2014-10-23 Lg Innotek Co., Ltd. Bent printed circuit board for backlight unit
US20140338274A1 (en) * 2011-08-10 2014-11-20 Thermagrip, Ltd. Anti-slip step treatment
US8901209B2 (en) 2010-04-21 2014-12-02 Sabic Global Technologies B.V. Wood-plastic composite with improved thermal and weathering resistance and method of making the same
US20140370234A1 (en) * 2012-05-30 2014-12-18 Markus Watermann Construction Panel
US20150151494A1 (en) * 2007-10-10 2015-06-04 Materialise Nv Method and apparatus for automatic support generation for an object made by means of a rapid prototype production method
CN105711197A (zh) * 2016-01-19 2016-06-29 南通中尧特雷卡电梯产品有限公司 一种电梯踏板
CN107700856A (zh) * 2017-10-13 2018-02-16 成都智宸科技有限公司 一种建筑施工砌筑用托板
US10059076B2 (en) 2008-10-28 2018-08-28 Woodwelding Ag Method of fastening an edge structure to a construction element
US10443197B1 (en) * 2015-01-28 2019-10-15 Traffix Devices, Inc. Modular travel warning strip system and methods
CN113414998A (zh) * 2021-07-12 2021-09-21 重庆泛锐科技有限公司 一种高强保温复合板材及其制备方法
CN113966270A (zh) * 2019-03-29 2022-01-21 弗劳恩霍夫应用研究促进协会 用于生产具有压制的二维或三维形状的夹层复合构件的方法以及这种夹层复合构件
CN114147996A (zh) * 2021-11-24 2022-03-08 航天特种材料及工艺技术研究所 一种含大长细比内部通道复合材料结构及其制备方法

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DE10354365B4 (de) * 2003-11-20 2006-08-17 Enkos Gmbh Trägerelement sowie Verfahren zur Herstellung eines solchen Trägerelements, Körper in der Ausbildung eines Tragelements sowie Verfahren zur Herstellung des Körpers
WO2008091166A1 (fr) * 2007-01-25 2008-07-31 Construction Planks Limited Améliorations apportées à un échafaudage ou associées à celui-ci
DE202007011081U1 (de) 2007-08-08 2008-12-18 Uti Holding + Management Ag Gerüstboden aus Metallrahmen, Deckblechen und Kunststoff-Stützkern
DE102010002538B4 (de) * 2010-03-03 2012-05-24 Bito-Lagertechnik Bittmann Gmbh Kunststoffbehälter mit Versteifungsprofil

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US11104119B2 (en) 2007-10-10 2021-08-31 Materialise N.V. Support structure for an object made by means of a rapid prototype production method
US10343389B2 (en) * 2007-10-10 2019-07-09 Materialise N.V. Support structure for an object made by means of a rapid prototype production method
US20150151494A1 (en) * 2007-10-10 2015-06-04 Materialise Nv Method and apparatus for automatic support generation for an object made by means of a rapid prototype production method
US10336029B2 (en) 2008-10-28 2019-07-02 Woodwelding Ag Method of fastening an object to a construction element
US10059076B2 (en) 2008-10-28 2018-08-28 Woodwelding Ag Method of fastening an edge structure to a construction element
US20140057067A1 (en) * 2008-10-28 2014-02-27 Woodwelding Ag Method for producing a lightweight component, and support element
US9205627B2 (en) * 2008-10-28 2015-12-08 Woodwelding Ag Method for producing a lightweight component, and support element
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WO2014041184A1 (fr) * 2012-09-17 2014-03-20 Peri Gmbh Plateau-trappe d'accès pour échafaudage
US10443197B1 (en) * 2015-01-28 2019-10-15 Traffix Devices, Inc. Modular travel warning strip system and methods
US11060251B1 (en) 2015-01-28 2021-07-13 Traffix Devices, Inc. Modular travel warning strip system and methods
CN105711197A (zh) * 2016-01-19 2016-06-29 南通中尧特雷卡电梯产品有限公司 一种电梯踏板
CN107700856A (zh) * 2017-10-13 2018-02-16 成都智宸科技有限公司 一种建筑施工砌筑用托板
CN113966270A (zh) * 2019-03-29 2022-01-21 弗劳恩霍夫应用研究促进协会 用于生产具有压制的二维或三维形状的夹层复合构件的方法以及这种夹层复合构件
CN113414998A (zh) * 2021-07-12 2021-09-21 重庆泛锐科技有限公司 一种高强保温复合板材及其制备方法
CN114147996A (zh) * 2021-11-24 2022-03-08 航天特种材料及工艺技术研究所 一种含大长细比内部通道复合材料结构及其制备方法

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AU2003236771A1 (en) 2003-10-13
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WO2003083352A2 (fr) 2003-10-09
DE10391127D2 (de) 2005-02-17

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