GB2564502A - Window frame member - Google Patents

Window frame member Download PDF

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Publication number
GB2564502A
GB2564502A GB1720887.7A GB201720887A GB2564502A GB 2564502 A GB2564502 A GB 2564502A GB 201720887 A GB201720887 A GB 201720887A GB 2564502 A GB2564502 A GB 2564502A
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GB
United Kingdom
Prior art keywords
frame member
colour
plastics
channel
window
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.)
Granted
Application number
GB1720887.7A
Other versions
GB201720887D0 (en
GB2564502B (en
Inventor
Gregory Philip
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.)
Veka PLC
Original Assignee
Veka PLC
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 Veka PLC filed Critical Veka PLC
Priority to GB201720887A priority Critical patent/GB2564502B/en
Publication of GB201720887D0 publication Critical patent/GB201720887D0/en
Publication of GB2564502A publication Critical patent/GB2564502A/en
Application granted granted Critical
Publication of GB2564502B publication Critical patent/GB2564502B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • 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
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • B29C48/175—Articles comprising two or more components, e.g. co-extruded layers the components having different colours comprising a multi-coloured single component, e.g. striated, marbled or wood-like patterned
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/20—Constructions depending on the use of specified materials of plastics
    • E06B3/205—Constructions depending on the use of specified materials of plastics moulded or extruded around a core
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/30—Coverings, e.g. protecting against weather, for decorative purposes
    • E06B3/301—Coverings, e.g. protecting against weather, for decorative purposes consisting of prefabricated profiled members or glass
    • E06B3/306—Covering plastic frames with metal or plastic profiled members
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/42—Sliding wings; Details of frames with respect to guiding
    • E06B3/44—Vertically-sliding wings
    • E06B3/4415—Double-hung, i.e. with two vertical sliding panels
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/778—Windows
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/42—Sliding wings; Details of frames with respect to guiding
    • E06B3/44—Vertically-sliding wings
    • E06B2003/4438—Vertically-sliding wings characterised by the material used for the frames
    • E06B2003/4461—Plastics

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The window frame has a frame member 10 with at least one longitudinally extending channel 24 which is visible in use, the method including the steps of co-extruding the frame member of plastics of first and second colours, wherein plastic of the first colour forms the surface of the channel 24, plastics of the second colour forming the rest of the member, applying a decorative treatment 26 to a portion of the member not including the channel, and leaving a further portion 13,20 of the member untreated so that the plastics of the second colour is visible. The window may be a double hung sliding sash window with two channels 22, 24, and the interior surfaces 13, 20 and interior channel 22 may be white plastics, whilst the exterior channel 24 may be brown plastics and the decorative cover 26 may be wood grain effect. Alternatively the colour of the exterior channel plastic may be identical to the decorative treatment.

Description

WINDOW FRAME MEMBER
The present invention is concerned with window frames comprising plastics extrusions, especially those having a decorative surface coating.
Plastics window frames have many advantages over traditional wooden frames. They can be cheap to manufacture in quantity to high accuracy. They can be stable against warping despite extremes of temperature and humidity. Whereas any surface finish applied to wood requires renewal after prolonged exposure to the elements, and failure to renew a finish on wood is likely to lead to rotting, discolouration and other forms of degradation, plastics materials such as PVC are able to survive outside with no surface finish, and to maintain their appearance over a lifetime of some decades.
The appearance of plain white or brown plastics window frames is not however to everyone's taste, so there are many frames currently on the market which comprise plastics members carrying a decorative surface finish. This can take many forms. Often the surface finish imitates the appearance of wood. It may provide a colour pattern akin to that of wood grain, and also in some cases a texture imitative of wood grain. The surface finish typically forms a thin layer on the plastics substrate. Film coatings are widely used for this purpose.
One challenge in this context is that modern window frames typically have channels or recesses to receive or mount window furniture or locks, or to receive a casement or sash. For example a sliding sash type window has a frame with multiple channels that serve to slidably mount the sashes, as well as housing the balance mechanisms used to support the weight of the sashes and to regulate their movement. These grooves and recesses cannot satisfactorily be covered in foil, so that their appearance may not match that of the remainder of the frame. They are often covered when the window is closed, but revealed while the window is open, giving the window an unsightly appearance. An exposed white channel in what otherwise appears to be a wooden frame is clearly visually discordant.
There are various known ways to address the problem. The channels may be hidden behind brush type seals, but these are not always appropriate and can themselves be somewhat unsightly, as well as having a finite design lifetime. The channels may be painted to approximately match the surface finish applied to the frame. But for example the channels used to mount a sash are subject to some rubbing/abrasion, which can damage a paint finish. A more permanent solution would be to pigment the whole of the underlying plastics member to give it a colour similar to that of the surface coating. This can provide a more lasting solution but it is not suitable for all forms of window frame. Some frames are intended to provide a different surface finish inside the building and outside it. For example, a customer may wish the internally facing parts of the frame to be white, and the external parts of the frame to have a wood grain finish. This can be achieved by using white plastics members to form the frame, and applying wood grain foil to its external parts only. But in this case the frame's exposed channels would be white. Colouring the whole plastics member to match the wood grain finish is not an option because then the internal surfaces of the frame would also be coloured.
According to the present invention there is a method of manufacture of an elongate window frame member which has at least one longitudinally extending channel which is visible in use, the method comprising co-extruding the frame member in plastics of first and second colours, so that exposed surfaces of said channel comprise plastics of the first colour and other parts of the frame member comprise plastics of the second colour; applying a surface treatment to a portion of the frame member's surface, which does not include the exposed surfaces of the channel; and leaving a further portion of the frame member's surface, which comprises plastics of the second colour, without a surface treatment, so that the plastics of the second colour is visible.
This combination of (a) co-extrusion of the frame member in two different colours and (b) application of the surface treatment to a portion of the member's surface allows the aforementioned problems to be overcome. The first colour chosen for the visible surfaces of the channel can be similar or identical to the colour of the surface treatment. For instance, the surface treatment may be a brown wood grain effect and the first colour may be a matching shade of brown. In this way the channel can be given a similar appearance to the adjacent wood grained surfaces, so that its appearance is not discordant. Because the colour given to the channel is the result of co-extrusion and not for example of painting, it is able to endure despite scratching or abrasion that the channel may suffer in use.
According to a second aspect of the present invention there is an elongate window frame member which has at least one longitudinally extending channel which is visible in use, frame member comprising a plastics member formed by co-extrusion in plastics of first and second colours, so that exposed surfaces of said channel comprise plastics of the first colour and other parts of the frame member comprise plastics of the second colour, a selected portion of the frame member's surface, which does not include the exposed surfaces of the channel carrying an applied surface treatment, and a further portion of the frame member's surface, which comprises plastics of the second colour, lacking a surface treatment, so that the plastics of the second colour is visible.
Specific embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a cross section through an extruded plastics window frame member embodying the present invention;
Figure 2 is an end view of the same frame member;
Figure 3 is a partial view of a window constructed using the frame member embodying the present invention; and
Figure 4 is a view of the entire window seen from the exterior of a building in which the window is mounted.
The frame member 10 depicted in Figures 1 to 3 is for use in a double hung sliding sash window-that is, a window 12 having a pair of sliding glazed sashes 14,16 (see Figure 4). It forms the uprights of the window frame itself - that is, of the fixed frame that carries the sashes. The frame member has an outer face 18 which is exposed in use to the outside of a building in which the window is mounted and an interior face 20 directed toward the inside of the building. Between these faces are inner and outer mounting channels 22, 24 which serve to slidably mount the respective sashes 14,16 in the assembled window, as well as receiving the balance mechanisms used to regulate movement of the sashes. These aspects of the frame are well known to the skilled person.
The frame member 10 of Figure 1 is extruded from plastics, which is conventional in the industry. The illustrated example is manufactured in un-plasticised poly vinyl chloride ("uPVC") although other plastics materials may be used in embodiments of the present invention. This particular example has a reinforcing member 25 of box section steel running through it, providing extra stiffness.
The window 12 is intended to show different surface treatments when viewed from the interior and from the exterior. In the illustrated example, the surfaces 13 visible from the interior of the building are in a plain colour which is the colour of the uPVC material itself. No visible surface treatment is applied to these parts of the member. There is no particular limitation on the colour of the plastics in and the invention is not limited to any colour choice, but in the present example the uPVC is white. The surfaces visible from the exterior of the building carry a decorative finish applied to the surface of the uPVC. Again there is no particular limitation on the form this can take, and any suitable surface finish or layer is within the scope of the present invention, but in the present example the decorative finish comprises an applied foil with a wood grain effect. The surfaces carrying this finish 26 are indicated by a double line in Figure 1, although this artificial form of representation is not used in Figure 2. Figure 3 represents the difference in colour between interior and exterior surfaces using a stippling effect.
In Figure 4 it can be seen that part of the outer mounting channel 24 is visible from the exterior of the building. Aesthetically it is thus desirable that the appearance of the channel 24 should be similar to that of the other parts of the window which are visible form the exterior. If the window - viewed from the exterior - is intended to simulate the appearance of timber thanks to a wood grain applied finish, then a stark white mounting channel 24 may be visually conspicuous, and may be thought of as spoiling the overall effect. As noted above, application of the foil finish to the channel 24 is problematic.
To address this problem, the frame member 10 is formed by co-extrusion of two differently coloured plastics. A portion 28 of the frame member 10 which forms the visible surfaces of the outer mounting channel 24 comprises plastics similar in colour to the applied finish 26. This portion is indicated in Figures 1 and 2 by hatching. Another portion of the frame member-which in the present embodiment is the entire remainder of it - comprises plastics of a different colour, which in the present example is the white base colour seen from the interior side of the window. The portion 28 may not have exactly the same appearance as the neighbouring surfaces carrying the applied finish - it may for example lack the detail of a wood grain finish - but it can be sufficiently similar in colour to be visually inconspicuous.
The technique of co-extrusion of plastics is of course well known in itself, although it is not believed to have been applied in this context. The detail of suitable co-extrusion processes will therefore not be discussed herein.

Claims (14)

1. A method of manufacture of an elongate window frame member which has at least one longitudinally extending channel which is visible in use, the method comprising co-extruding the frame member in plastics of first and second colours, so that exposed surfaces of said channel comprise plastics of the first colour and other parts of the frame member comprise plastics of the second colour, applying a decorative surface treatment to a selected portion of the frame member's surface, which does not include the exposed surfaces of the channel, and leaving a further portion of the frame member's surface, which comprises plastics of the second colour, without a surface treatment, so that the plastics of the second colour is visible.
2. A method as claimed in claim 1 in which the surface treatment gives the selected portion of the frame member's surface a colour identical or similar to the first colour.
3. A method as claimed in claim 1 or claim 2 in which the selected portion of the frame's surface is adjacent the channel.
4. A method as claimed in any preceding claim in which the said selected portion comprises faces of the frame member which are visible from the exterior of a building when the frame member is installed in a window in the building, and the said further portion comprises faces of the frame member which are visible from the interior when the frame member is so mounted.
5. A method as claimed in any preceding claim in which the surface treatment is a wood grain effect.
6. A method as claimed in any preceding claim in which the surface treatment comprises application of a foil.
7. A method as claimed in any preceding claim in which the frame member is for a sliding sash window and the channel is for mounting a sliding sash.
8. An elongate window frame member which has at least one longitudinally extending channel which is visible in use, frame member comprising a plastics member formed by co-extrusion in plastics of first and second colours, so that exposed surfaces of said channel comprise plastics of the first colour and other parts of the frame member comprise plastics of the second colour, a selected portion of the frame member's surface, which does not include the exposed surfaces of the channel carrying an applied surface treatment, and a further portion of the frame member's surface, which comprises plastics of the second colour, lacking a surface treatment, so that the plastics of the second colour is visible.
9. A frame member as claimed in claim 8 in which the surface treatment gives the selected portion of the frame member's surface a colour identical or similar to the first colour.
10. A frame member as claimed in claim 8 or claim 9 in which the selected portion of the frame's surface is adjacent the channel.
11. A frame member as claim in any of claims 8 to 10 in which the said selected portion comprises faces of the frame member which are visible from the exterior of a building when the frame member is installed in a window in the building, and the said further portion comprises faces of the frame member which are visible from the interior when the frame member is so mounted.
12. A frame member as claimed in any of claims 8 to 11 in which the surface treatment is a wood grain effect.
13. A frame member as claimed in any of claims 8 to 12 in which the surface treatment comprises application of a foil.
14. A frame member as claimed in any of claims 8 to 13 in which the frame member is for a sliding sash window and the channel is for mounting a sliding sash.
GB201720887A 2017-12-14 2017-12-14 Window frame member Active GB2564502B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201720887A GB2564502B (en) 2017-12-14 2017-12-14 Window frame member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201720887A GB2564502B (en) 2017-12-14 2017-12-14 Window frame member

Publications (3)

Publication Number Publication Date
GB201720887D0 GB201720887D0 (en) 2018-01-31
GB2564502A true GB2564502A (en) 2019-01-16
GB2564502B GB2564502B (en) 2019-12-25

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ID=61009211

Family Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024088754A1 (en) * 2022-10-28 2024-05-02 Vkr Holding A/S Roof window comprising polymer profile comprising a skin layer
EP4379161A1 (en) * 2022-11-29 2024-06-05 VKR Holding A/S Roof window comprising polymer profile comprising a skin layer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515652A (en) * 1994-08-29 1996-05-14 Sne Enterprises, Inc. Double hung window
CN2602138Y (en) * 2003-02-13 2004-02-04 安徽国风塑业股份有限公司 Throughout wall double color door and window section bar
US20070092701A1 (en) * 2005-10-11 2007-04-26 Jeng Jong P Building material having a fluorocarbon based capstock layer and process of manufacturing same with less dimensional distortion
US20100192489A1 (en) * 2009-01-30 2010-08-05 Plastpro 2000, Inc. Reinforced mull post assembly
CN202187659U (en) * 2011-07-18 2012-04-11 安徽国风塑料建材有限公司 PVC (polyvinyl chloride) co-extrusion profile with double colors and double surfaces
KR20150113604A (en) * 2014-03-31 2015-10-08 (주)엘지하우시스 composite window by co-extrusion
CN204920672U (en) * 2015-09-15 2015-12-30 黄石市劲鑫塑胶科技有限公司 Heavy push -and -pull of high imitative wooden coextrusion line frame feeding for gate open

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515652A (en) * 1994-08-29 1996-05-14 Sne Enterprises, Inc. Double hung window
CN2602138Y (en) * 2003-02-13 2004-02-04 安徽国风塑业股份有限公司 Throughout wall double color door and window section bar
US20070092701A1 (en) * 2005-10-11 2007-04-26 Jeng Jong P Building material having a fluorocarbon based capstock layer and process of manufacturing same with less dimensional distortion
US20100192489A1 (en) * 2009-01-30 2010-08-05 Plastpro 2000, Inc. Reinforced mull post assembly
CN202187659U (en) * 2011-07-18 2012-04-11 安徽国风塑料建材有限公司 PVC (polyvinyl chloride) co-extrusion profile with double colors and double surfaces
KR20150113604A (en) * 2014-03-31 2015-10-08 (주)엘지하우시스 composite window by co-extrusion
CN204920672U (en) * 2015-09-15 2015-12-30 黄石市劲鑫塑胶科技有限公司 Heavy push -and -pull of high imitative wooden coextrusion line frame feeding for gate open

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024088754A1 (en) * 2022-10-28 2024-05-02 Vkr Holding A/S Roof window comprising polymer profile comprising a skin layer
EP4379161A1 (en) * 2022-11-29 2024-06-05 VKR Holding A/S Roof window comprising polymer profile comprising a skin layer

Also Published As

Publication number Publication date
GB201720887D0 (en) 2018-01-31
GB2564502B (en) 2019-12-25

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