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GB2542126A - Step nosings - Google Patents

Step nosings Download PDF

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Publication number
GB2542126A
GB2542126A GB1515875.1A GB201515875A GB2542126A GB 2542126 A GB2542126 A GB 2542126A GB 201515875 A GB201515875 A GB 201515875A GB 2542126 A GB2542126 A GB 2542126A
Authority
GB
United Kingdom
Prior art keywords
groove
fusing
nosing
extrusion
grooves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1515875.1A
Other versions
GB201515875D0 (en
Inventor
Hamp Jonathan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THERMAPPLY Ltd
Original Assignee
THERMAPPLY Ltd
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 THERMAPPLY Ltd filed Critical THERMAPPLY Ltd
Priority to GB1515875.1A priority Critical patent/GB2542126A/en
Publication of GB201515875D0 publication Critical patent/GB201515875D0/en
Publication of GB2542126A publication Critical patent/GB2542126A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7808Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of holes or slots
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/64Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02Stairways; Layouts thereof
    • E04F11/104Treads
    • E04F11/16Surfaces thereof; Protecting means for edges or corners thereof
    • E04F11/163Protecting means for edges or corners
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/84Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by moulding material on preformed parts to be joined

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A method for making an anti-slip step nosing comprising a grooved extrusion (12, fig 1) comprising arranging the extrusion with a groove 14a horizontal and facing upwardly, fitting into the groove a pre-cut piece of thermoplastic ground marking material 15 having a thickness greater than the depth of the groove, and heating the material to fuse it to the groove. The heating may be carried out in any convenient way including: gas torch, microwave, infra-red or placing the nosing in an oven. Preferably, the method comprises fitting the extrusions with the material at a fitting station, conveying through an oven for fusing, then through a sprinkling station 18 at which anti-slip particles 17 and retro-reflective beads can be added while the material is softened such that they partially sink in. Where a step nosing has multiple grooves, angled with respect to one another, the procedure may be repeated each groove being oriented so that it is horizontal and facing upwards. A containment 19 comprising a box section, open at the top to permit sprinkling, may be provided over the groove to prevent migration of the softened plastic material.

Description

Step Nosings
This invention relates to step nosings.
Step nosings are reinforcements/anti-slip/edge-visibility finishings applied to steps. Well known step edging products comprise metal, such as aluminium and bronze, or plastic extrusions having grooves in which anti-slip material such as rubber or plastic is located. For anti-slip provision, particles of glass, flint or corundum (aluminium oxide) are incorporated into the material, and these also resist wear over long use, so that the slip resistance changes but little over time.
The anti-slip material is conventionally inserted into the grooves after the extrusion has been secured to the step by screws let into the base of the groove, whereby to conceal the screw heads from view in the interest of a neat finish.
It is proposed, now, however, to bond the anti-slip material into the grooves, and to use for such material a thermoplastic material used for ground marking and also more recently for applying whole cover step treatment for anti-slip provision for outdoor, particularly stadium steps, that is bonded to the ground/step surface by heat fusion. The heat fusion step softens the exposed surface of the plastic so that anti-slip particles can be partially sunk into the surface, remaining partially exposed whereby to impart anti-slip properties, and, if retro-reflectivity is required, retro-reflective glass microbeads may also be scattered on to the soft surface to be fused thereto with sufficient exposure to reflect incident light back towards its source.
The heated surface, on cooling, has improved hardness, heat resistance and wear resistance. It can be provided in a range of colours.
This material would have to be bonded into the groove by heat fusion in order to achieve the wear and slip resistance required. As the conventional way of heat bonding the material is by way of a gas torch, which is not appropriate for indoor use, and, often, even for outdoor use, it is not generally possible to install the step nosing extrusion to the step and then bond the anti-slip material to it, and, in any event, the extrusions commonly have two or three grooves, one on top of the step, one on the riser and a narrow one canted at about 45° between these two.
The present invention provides a method by which the material can be satisfactorily fused into the grooves.
The invention comprises a method for making an anti-slip step nosing comprising a grooved extrusion, comprising arranging the extrusion with a groove horizontal and facing upwardly, fitting into the groove a pre-cut piece of thermoplastic ground marking material having a thickness greater than the depth of the groove, and heating the material to fuse it to the groove.
The material thickness may be 0.5 to 1.0 mm greater than the depth of the groove.
The heating may be carried out in any convenient way, including by way of a gas torch, microwave, infra-red radiation or simply by placing the step nosing in an oven.
While the material is softened, anti-slip particles of glass, corundum or other materials may be sprinkled on its surface and allowed partially to sink in, and retro-reflective microbeads may also be sprinkled when the temperature is such as to allow them partially to sink in.
In a production facility, extrusions may be fitted with material at a fitting station and conveyed through an oven for fusing, then through a sprinkling station at which anti-slip particles and retro-reflective microbeads may be added. The temperature at the sprinkling station may be controlled to maintain the material surface at optimum softness to allow particles and microbeads to sink partially.
The fitted extrusion may have a containment applied over the groove to prevent migration of softened plastics material beyond the groove. The containment may comprise a box section, open at the top to permit particle sprinkling.
Where a step nosing has multiple grooves, angled with respect to one another, the procedure may be repeated for the other grooves, the groove being treated being orientated so that it is horizontal, facing upwards. Where there are three grooves, one on the step top, one on the riser, and a 45° canted groove in between, they may be treated in that order.
If the nature of the plastics material is such that the fusing step thermosets it so that it does not soften again at initial fusing temperature, repeated passes of the step nosing through a fusing oven with one or two grooves already filled will not affect the filled grooves. Otherwise, fusion can be effected by localised heating, as, for example, by microwave or infra-red heating directed at the upper surface of the unfused material. A method and apparatus for making an anti-slip step nosing in accordance with the invention will now be described with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of one form of step nosing extrusion;
Figure 2 is a cross section of another form of step nosing extrusion;
Figure 3 is a cross section through a groove of a step nosing like that of Figure 2 with a plastic insert;
Figure 4 is a plan view of the step nosing of Figure 3, with the insert of Figure 3;
Figure 5 is a cross section kike that of Figure 3, under heat treatment;
Figure 6 is a cross section like that of Figure 5, under sprinkling treatment: and
Figure 7 is a view showing how the cross section of Figure 2 is re-orientated for another step in the method.
Figures 1 and 2 show grooved extrusions 12 as are ordinarily used as step nosings 11. Conventionally, they are fitted to the edges of steps as by screws 13 (Figure 1), and rubber or plastic inserts fitted into the grooves 14 to cover up the screws 13. The edges of the grooves 14 may be undercut to retain the inserts. The extrusion 12 of Figure 1 has just one such groove 14, that of Figure 2 having three grooves 14, one that sits in use on top of the step, one that sits over the step riser, and one between the other grooves canted at 45°.
The drawings illustrate a method for making an anti-slip step nosing 11 comprising a grooved extrusion 12, comprising arranging the extrusion 12 with a groove 14 horizontal and facing upwardly, fitting into the groove 14 a pre-cut piece of thermoplastic ground marking material 15, Figure 3, having a thickness greater than the depth of the groove 14, and heating the material 15 to fuse it to the groove 14.
The method can be used on the single groove 14 of the extrusion 12 of Figure 1 or on one or all three grooves 14 of the extrusion 12 of Figure 2.
The material 15 thickness can be 0.5 to 1.0 nun greater than the depth of the groove 14.
The heating can be carried out in any convenient way, including by way of a gas torch, microwave, infra-red radiation or simply by placing the step nosing 11 in an oven.
Figure 5 shows the step nosing 11 beneath an infra-red or microwave heater 16.
While the material 15 is softened during or after the fusing step, anti-slip particles 17 of glass, corundum or other materials can be sprinkled from a hopper 18 on its surface and allowed partially to sink in, and retro-reflective microbeads may also be sprinkled when the temperature is such as to allow them partially to sink in.
In a production facility, extrusions may be fitted with material at a fitting station and conveyed through an oven for fusing, then through a sprinkling station at which anti-slip particles and retro-reflective microbeads may be added. The temperature at the sprinkling station may be controlled to maintain the material surface at optimum softness to allow particles and microbeads to sink partially.
The fitted extrusion has a containment 19, Figures 5 and 6, applied over the groove 14 to prevent migration of softened plastics material 15 laterally beyond the groove 14. The containment 19 comprise a box section, open at the top to permit particle sprinkling made of aluminium or other material that will withstand the heat fusing treatment. At the end of the treatment, the containment 19 is re-used.
Where a step nosing has multiple grooves, as has that illustrated in Figures 2 and 4, angled with respect to one another, the procedure can be repeated for the other grooves, the groove being treated being orientated so that it is horizontal, facing upwards. Where there are three grooves, one on the step top, one on the riser, and a 45° canted groove in between, they may be treated in that order. Figure 7 shows how the extrusion of Figure 2 is orientated when treating the groove 14a. A differently sized containment 19 is used when treating differently sized grooves.
There may be no need to use the same material 15, or material of the same colour, for all groves, nor, perhaps, to add anti-slip particles to the material 15 in the vertically oriented groove lb
If the nature of the plastics material 15 is such that the fusing step thermosets it so that it does not soften again at initial fusing temperature, repeated passes of the step nosing 11 through a fusing oven with one or two grooves already filled will not affect the filled grooves. Otherwise, fusion can be effected by localised heating, as, for example, by microwave or infra-red heating directed at the upper surface of the unfused material.
Of course, it will no longer be possible to conceal screws 13 beneath the inserted material 15.

Claims (1)

  1. Claims: 1 A method for making an anti-slip step nosing comprising a grooved extrusion, comprising arranging the extrusion with a groove horizontal and facing upwardly, fitting into the groove a pre-cut piece of thermoplastic ground marking material having a thickness greater than the depth of the groove, and heating the material to fuse it to the groove. 2 A method according to claim 1, in which the material thickness 0.5 to 1.0 mm greater than the depth of the groove. 3 A method according to claim 1 or claim 2, in which the heating is carried out in any convenient way, including by way of a gas torch, microwave, infra-red radiation or simply by placing the step nosing in an oven. 4 A method according to any one of claims 1 to 4, in which, while the material is softened, anti-slip particles of glass, corundum and/or other materials such as retro-reflective beads are sprinkled on its surface and allowed partially to sink in. 5 A method according to any one of claims 1 to 4, in which extrusions are fitted with material at a fitting station and conveyed through an oven for fusing, then through a sprinkling station at which anti-slip particles and retro-reflective microbeads can be added. 6 A method according to claim 5, in which the temperature at the sprinkling station is controlled to maintain the material surface at optimum softness to allow particles and/or microbeads to sink partially. 7 A method according to any one of claims 1 to 6, in which the fitted extrusion has a containment applied over the groove to prevent migration of softened plastics material beyond the groove. 8 A method according to claim 7, in which the containment comprises a box section, open at the top to permit particle sprinkling. 9 A method according to any one of claims 1 to 8, in which, where a step nosing has multiple grooves, angled with respect to one another, the procedure is repeated for the other grooves, the groove being treated being orientated so that it is horizontal, facing upwards. 10 A method according to claim 9, in which, where there are three grooves, one on the step top, one on the riser, and a 45° canted groove in between, they are treated in that order. 11 A method according to any one of claims 1 to 10, in which, if the nature of the plastics material is such that the fusing step thermosets it so that it does not soften again at fusing temperature, the step may make repeated passes of the step nosing through a fusing oven with one or two grooves already filled. 12 A method according to any one of claims 1 to 10, in which, if the nature of the plastics material is not such that the fusing step thermosets it so that it does soften again at initial fusing temperature, fusion is effected by localised heating, as, for example, by microwave or infra-red heating directed at the upper surface of the unfused material.
GB1515875.1A 2015-09-08 2015-09-08 Step nosings Withdrawn GB2542126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1515875.1A GB2542126A (en) 2015-09-08 2015-09-08 Step nosings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1515875.1A GB2542126A (en) 2015-09-08 2015-09-08 Step nosings

Publications (2)

Publication Number Publication Date
GB201515875D0 GB201515875D0 (en) 2015-10-21
GB2542126A true GB2542126A (en) 2017-03-15

Family

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Family Applications (1)

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GB1515875.1A Withdrawn GB2542126A (en) 2015-09-08 2015-09-08 Step nosings

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU225631U1 (en) * 2023-09-28 2024-04-26 Общество с ограниченной ответственностью "Русский профиль" STEP COVER

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1500139A (en) * 1966-07-25 1967-11-03 Anciens Etablissements Fevre & Non-slip tile and related items
FR2644727A2 (en) * 1989-03-02 1990-09-28 Nortene Sa Method of manufacturing a road-marking grid
JPH09174686A (en) * 1995-12-26 1997-07-08 Nippon Palletec Kk Fusion bonding method of anti-slip tape for synthetic resin pallet
US20090145059A1 (en) * 2007-12-07 2009-06-11 Kay Ronald J Safety nosing components and manufacturing methods
GB2519765A (en) * 2013-10-29 2015-05-06 Thermagrip Ltd Step coverings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1500139A (en) * 1966-07-25 1967-11-03 Anciens Etablissements Fevre & Non-slip tile and related items
FR2644727A2 (en) * 1989-03-02 1990-09-28 Nortene Sa Method of manufacturing a road-marking grid
JPH09174686A (en) * 1995-12-26 1997-07-08 Nippon Palletec Kk Fusion bonding method of anti-slip tape for synthetic resin pallet
US20090145059A1 (en) * 2007-12-07 2009-06-11 Kay Ronald J Safety nosing components and manufacturing methods
GB2519765A (en) * 2013-10-29 2015-05-06 Thermagrip Ltd Step coverings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU225631U1 (en) * 2023-09-28 2024-04-26 Общество с ограниченной ответственностью "Русский профиль" STEP COVER

Also Published As

Publication number Publication date
GB201515875D0 (en) 2015-10-21

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