CA2145561C - Picture frames - Google Patents
Picture frames Download PDFInfo
- Publication number
- CA2145561C CA2145561C CA002145561A CA2145561A CA2145561C CA 2145561 C CA2145561 C CA 2145561C CA 002145561 A CA002145561 A CA 002145561A CA 2145561 A CA2145561 A CA 2145561A CA 2145561 C CA2145561 C CA 2145561C
- Authority
- CA
- Canada
- Prior art keywords
- extrusion
- paste
- wood
- lengths
- dry
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C5/00—Processes for producing special ornamental bodies
- B44C5/02—Mountings for pictures; Mountings of horns on plates
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
- A47G1/06—Picture frames
- A47G1/0616—Ornamental frames, e.g. with illumination, speakers or decorative features
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping 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
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D12/00—Producing frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2012/00—Frames
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Color Television Image Signal Generators (AREA)
Abstract
The present invention relates to a process for manufacturing frame members for picture frames and to the product of that process. The process comprises the steps of forming a plastics extrusion and cutting it into lengths and applying to the lengths of plastic extrusion a solvent based wood paste which is then moulded or otherwise shaped such that it forms ornamentation on the surface of the plastics extrusion and it is then allowed to dry. This process makes use of the low cost of extrusion plastics moulding but enables the ornamental features that would otherwise only be obtainable by injection moulding to be obtained with the extrusion moulding.
Description
1225-5 21~5561 PICTURE FR~MES
Field of the Invention The present invention relates to ornamental frames (picture frames) and a process for m~nllf~cturing an ornamental frame member and to a member so formed.
Background to the Invention The nature of a graphic work of art (or picture) such as a painting or photographic print is such that the choice of frame within which the picture is mounted can have a profound influence on the presentation and visual impact of the work of art. Accordingly, a large industry has grown up to service the demand for custom made picture frames ranging from simple square section pine frames to elaborately carved and gilded frames of hard wood. Inevitably, however, these frames are expensive both in terms of the costs of the raw materials and the cost of crafting the material to form the desired end product.
In order to meet demand for lower cost frame members primarily for high volume sale and, most frequently, for the framing of photographs, plastics extrusion processes have been adopted. The products of these extrusion processes are now widely available but these do suffer the disadvantage that heretofore they have been comparatively simple in form with no fine embellishment or ornamentation. Whereas injection moulds allow for the preparation of frame members or complete frames with integral 214~561
Field of the Invention The present invention relates to ornamental frames (picture frames) and a process for m~nllf~cturing an ornamental frame member and to a member so formed.
Background to the Invention The nature of a graphic work of art (or picture) such as a painting or photographic print is such that the choice of frame within which the picture is mounted can have a profound influence on the presentation and visual impact of the work of art. Accordingly, a large industry has grown up to service the demand for custom made picture frames ranging from simple square section pine frames to elaborately carved and gilded frames of hard wood. Inevitably, however, these frames are expensive both in terms of the costs of the raw materials and the cost of crafting the material to form the desired end product.
In order to meet demand for lower cost frame members primarily for high volume sale and, most frequently, for the framing of photographs, plastics extrusion processes have been adopted. The products of these extrusion processes are now widely available but these do suffer the disadvantage that heretofore they have been comparatively simple in form with no fine embellishment or ornamentation. Whereas injection moulds allow for the preparation of frame members or complete frames with integral 214~561
-2 -ornamentation in the moulding, the cost of such processes are prohibitive for large scale manufacture.
The need therefore exists for providing a process for m~king picture frame members that has the advantage of high volume plastics extrusion manufacture but allows ornamentation of such extrusions.
Summary of the Invention According to a first aspect of the present invention there is provided a process for m~mlf~cturing frame members for picture frames which comprises the steps of forming a plastics extrusion and cutting it into lengths;applying to the lengths of plastics extrusion a solvent based wood paste;
moulding or otherwise shaping the wood paste as or after it is applied such that it forms ornamentation on the surface of the length of plastics extrusion;
and allowing the paste to dry.
Suitably the solvent of the solvent based wood paste comprises toluene and acetone.
Exemplary of such wood paste is a product manufactured by Cappelini Due S.D.F. of Seregno Italy under product name wood pulp and classification IMDG CODE 3.3 Page 3372 UN N 1263 and M.M.M. CODE 3 C21.
Wood pastes of this nature are known for adorning wood but have heretofore not been contemplated for use in adorning plastics. Quite contrary to expectation wood paste of this nature adheres effectively to plastics extrusions of, for example, polystyrene to provide an attractive ornamented finish.
It is believed that the solvent etches into the plastics material and enables the paste to form resin bonds with the polymer of the plastics material.
Irrespective of the mechanism by which this effect is achieved, the end result is both extremely attractive and revolutionary in the context of the picture framing industry.
., - 214~56 1
The need therefore exists for providing a process for m~king picture frame members that has the advantage of high volume plastics extrusion manufacture but allows ornamentation of such extrusions.
Summary of the Invention According to a first aspect of the present invention there is provided a process for m~mlf~cturing frame members for picture frames which comprises the steps of forming a plastics extrusion and cutting it into lengths;applying to the lengths of plastics extrusion a solvent based wood paste;
moulding or otherwise shaping the wood paste as or after it is applied such that it forms ornamentation on the surface of the length of plastics extrusion;
and allowing the paste to dry.
Suitably the solvent of the solvent based wood paste comprises toluene and acetone.
Exemplary of such wood paste is a product manufactured by Cappelini Due S.D.F. of Seregno Italy under product name wood pulp and classification IMDG CODE 3.3 Page 3372 UN N 1263 and M.M.M. CODE 3 C21.
Wood pastes of this nature are known for adorning wood but have heretofore not been contemplated for use in adorning plastics. Quite contrary to expectation wood paste of this nature adheres effectively to plastics extrusions of, for example, polystyrene to provide an attractive ornamented finish.
It is believed that the solvent etches into the plastics material and enables the paste to form resin bonds with the polymer of the plastics material.
Irrespective of the mechanism by which this effect is achieved, the end result is both extremely attractive and revolutionary in the context of the picture framing industry.
., - 214~56 1
-3-As a refinement to the general technique referred to above, following application of the wood paste to the plastics extrusion and as a result of the fact that applying the paste tends to cause bowing of the extrusion lengths as the wood paste sets, it is preferred to apply straightening forces to the extrusions as the wood paste is allowed to dry.
Advantageously the extrusion lengths to which the wood paste has been applied may be rested upon support arms which each provide support toward a respective opposing end of each length with the face of the extrusion to which the paste has been applied facing upwardly and the weight of the extrusion initially c~ ing the ends of the extrusion to bow downwardly over the support arms, whereby setting of the paste antagonises the gravitation or bowing such that, when the paste is set, the extrusion lengths will be substantially straight.
To this end there is suitably provided a drying rack which comprises a pair of stands which are constrained to move together or apart along an axis and each of which has a support arm extending laterally thereof such that the support arm of each respective stand serves to support an opposing end of one or more lengths of extrusion allowing the ends of the extrusion to bow downwardly over the support arms. The support arms may be moved nearer together by moving together the stands as the paste sets, thereby enabling continuous correction for the bowing arising from the setting paste by increasing the gravitation bowing effect in the opposite direction.
According to a further aspect of the present invention there is provided a frame member produced by the process of the first aspect. According to a yet further aspect of the invention there is provided a frame formed from a plurality of said frame members.
Brief Description of the Drawings A preferred embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying drawings wherein:
2145~61
Advantageously the extrusion lengths to which the wood paste has been applied may be rested upon support arms which each provide support toward a respective opposing end of each length with the face of the extrusion to which the paste has been applied facing upwardly and the weight of the extrusion initially c~ ing the ends of the extrusion to bow downwardly over the support arms, whereby setting of the paste antagonises the gravitation or bowing such that, when the paste is set, the extrusion lengths will be substantially straight.
To this end there is suitably provided a drying rack which comprises a pair of stands which are constrained to move together or apart along an axis and each of which has a support arm extending laterally thereof such that the support arm of each respective stand serves to support an opposing end of one or more lengths of extrusion allowing the ends of the extrusion to bow downwardly over the support arms. The support arms may be moved nearer together by moving together the stands as the paste sets, thereby enabling continuous correction for the bowing arising from the setting paste by increasing the gravitation bowing effect in the opposite direction.
According to a further aspect of the present invention there is provided a frame member produced by the process of the first aspect. According to a yet further aspect of the invention there is provided a frame formed from a plurality of said frame members.
Brief Description of the Drawings A preferred embodiment of the present invention will now be more particularly described by way of example with reference to the accompanying drawings wherein:
2145~61
-4 -Figure 1 is a perspective view of an embodiment of frame member; and Figure 2 is a perspective view of a drying rack for use in the manufacturing process.
Description of the Preferred Embodiment Referring to Figure 1, there is shown a frame member 1 comprising a length of polystyrene extrusion which is formed having a cross sectional profile suitable for a picture frame member which has been cut to a suitable length for convenient handling, storage and transportation.
As the length of extrusion is first formed by extruding through the outlet of the mould, it has a uniform cross section along its length.
The series of ornamental tear drop shaped mouldings 2 formed on the upper face of the extrusion are applied to the extrusion after the extrusion process has taken place.
The ornamental mouldings 2 are prepared from a solvent-based wood pulp or paste of a type as generally known in the wood crafting industry.
Suitable wood pastes or pulps for the purpose include those manufactured by an Italian company Cappelini Due S.D.F. of Seregno Italy under product classification IMDG CODE 3.3 Page 3372 UN N 1263 and M.M.M. CODE 3 C21. The example wood paste comprises the solvents acetone and toluene which react with a polystyrene extrusion to etch into the plastics material and bond closely therewith. From the nature of the solvents used in this particular paste care must be taken in its use and ideally masks/goggles worn during its handling to protect from the toxic vapours.
The paste may be applied in a mould which is placed atop the length of plastics extrusion but preferably is applied by squirting from a dispenser which is automated and programmed to dispense the paste in a pattern.
21~561 -s -An extractor fan is suitably mounted above the paste application facility within a hood extending over the facility, to draw off the solvent vapour as soon as the paste is applied and suitably for a resting period of three to four minutes thereafter. This has been found to drastically reduce the subsequent drying time.
Once the paste has been applied as desired it must then be allowed to dry over a period of days and in doing so it will tend to tension the upper surface of the length of extrusion to which it has been applied c~llsing the length to bow upwardly at the ends. This effect may be countered by pre-stressing the lengths in the opposing direction.
Referring to Figure 2, a drying rack is illustrated which comprises two substantially symmetrical stand members 3a, 3b on castor wheel 5 which are held substantially parallel to each other and constrained to move together or apart by means of a telescopic linkage 4a, 4b. Each stand member has an arm 6a, 6b extending laterally from an upper end thereof to support the lengths of extrusion which are mounted thereon extending therebetween.
Initially the two stand members 3a, 3b will be positioned apart and as the paste dries, with evaporation of the solvent, the lengths of extrusion will begin to bow upwardly at the ends. To counter this the stand members 3a, 3b may then be moved nearer together, allowing the weight of the extrusions to cause their ends to sag over the arms 6c, 6b. The separation is suitably reduced in stages during the drying process.
To further reduce the duration of the drying period extractor fans are suitably provided in the drying room. These assist in the drying process although it has been found that use of extractor fans at time of application is the single most effective measure to reduce drying time.
Description of the Preferred Embodiment Referring to Figure 1, there is shown a frame member 1 comprising a length of polystyrene extrusion which is formed having a cross sectional profile suitable for a picture frame member which has been cut to a suitable length for convenient handling, storage and transportation.
As the length of extrusion is first formed by extruding through the outlet of the mould, it has a uniform cross section along its length.
The series of ornamental tear drop shaped mouldings 2 formed on the upper face of the extrusion are applied to the extrusion after the extrusion process has taken place.
The ornamental mouldings 2 are prepared from a solvent-based wood pulp or paste of a type as generally known in the wood crafting industry.
Suitable wood pastes or pulps for the purpose include those manufactured by an Italian company Cappelini Due S.D.F. of Seregno Italy under product classification IMDG CODE 3.3 Page 3372 UN N 1263 and M.M.M. CODE 3 C21. The example wood paste comprises the solvents acetone and toluene which react with a polystyrene extrusion to etch into the plastics material and bond closely therewith. From the nature of the solvents used in this particular paste care must be taken in its use and ideally masks/goggles worn during its handling to protect from the toxic vapours.
The paste may be applied in a mould which is placed atop the length of plastics extrusion but preferably is applied by squirting from a dispenser which is automated and programmed to dispense the paste in a pattern.
21~561 -s -An extractor fan is suitably mounted above the paste application facility within a hood extending over the facility, to draw off the solvent vapour as soon as the paste is applied and suitably for a resting period of three to four minutes thereafter. This has been found to drastically reduce the subsequent drying time.
Once the paste has been applied as desired it must then be allowed to dry over a period of days and in doing so it will tend to tension the upper surface of the length of extrusion to which it has been applied c~llsing the length to bow upwardly at the ends. This effect may be countered by pre-stressing the lengths in the opposing direction.
Referring to Figure 2, a drying rack is illustrated which comprises two substantially symmetrical stand members 3a, 3b on castor wheel 5 which are held substantially parallel to each other and constrained to move together or apart by means of a telescopic linkage 4a, 4b. Each stand member has an arm 6a, 6b extending laterally from an upper end thereof to support the lengths of extrusion which are mounted thereon extending therebetween.
Initially the two stand members 3a, 3b will be positioned apart and as the paste dries, with evaporation of the solvent, the lengths of extrusion will begin to bow upwardly at the ends. To counter this the stand members 3a, 3b may then be moved nearer together, allowing the weight of the extrusions to cause their ends to sag over the arms 6c, 6b. The separation is suitably reduced in stages during the drying process.
To further reduce the duration of the drying period extractor fans are suitably provided in the drying room. These assist in the drying process although it has been found that use of extractor fans at time of application is the single most effective measure to reduce drying time.
Claims (8)
PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A process for manufacturing frame members for picture frames which process comprises steps of: forming a plastics extrusion and cutting it into lengths; applying to the lengths of plastics extrusion a solvent based wood paste; moulding or otherwise shaping the wood paste as or after it is applied such that it forms ornamentation on the surface of the length of plastics extrusion; and allowing the paste to dry.
2. A process as claimed in Claim 1, wherein the solvent of the solvent based wood paste comprises toluene and acetone.
3. A process as claimed in Claim 1 wherein during the step of allowing the wood paste to dry one or more extractor fans are used to draw off the solvent vapours.
4. A process as claimed in Claim 3 wherein a said extractor fan is operated over the extrusion as the wood paste is applied.
5. A process as claimed in Claim 1, wherein during the step of allowing the wood paste to dry straightening forces are applied to the length of extrusion to counteract bowing.
6. A process as claimed in Claim 3, wherein during the step of allowing the wood paste to dry each length of extrusion is rested upon support arms which each provide support toward a respective opposing end of the length with the face of the extrusion to which the paste has been applied facing upwardly and the weight of the extrusion initially causing the ends of the extrusion to bow downwardly over the support arms, whereby setting of the paste antagonises the gravitational bowing such that when the paste is set the extrusion lengths will be substantially straight.
7. A process as claimed in Claim 6, wherein there is provided a drying rack which comprises a pair of stands which are constrained to move together or apart along an axis and each of which has a said support arm extending laterally therefrom such that the support arm of each respective stand serves to support an opposing end of one or more lengths of extrusion during the step of allowing the wood paste to dry;
and as the wood paste dries the pair of stands are moved together.
8. A frame member produced by the process of Claim 1.
9. A frame formed from a plurality of the frame members claimed in
and as the wood paste dries the pair of stands are moved together.
8. A frame member produced by the process of Claim 1.
9. A frame formed from a plurality of the frame members claimed in
Claim 8.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9408196A GB9408196D0 (en) | 1994-04-26 | 1994-04-26 | Process for making a frame member |
| GB9410266A GB2276318B (en) | 1994-04-26 | 1994-05-20 | Picture frames |
| GB9408196.5 | 1994-05-20 | ||
| GB9410266.2 | 1994-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2145561A1 CA2145561A1 (en) | 1995-10-27 |
| CA2145561C true CA2145561C (en) | 2003-02-11 |
Family
ID=26304771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002145561A Expired - Fee Related CA2145561C (en) | 1994-04-26 | 1995-03-27 | Picture frames |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2818120B2 (en) |
| AU (1) | AU669995B2 (en) |
| CA (1) | CA2145561C (en) |
| DE (1) | DE9412993U1 (en) |
| GB (1) | GB2276318B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5508103A (en) * | 1995-01-30 | 1996-04-16 | Marley Mouldings Inc. | Extrusion product with decorative enhancement and process of making the same |
| GB9501774D0 (en) * | 1995-01-31 | 1995-03-22 | Reddiplex Ltd | Method of extruding two or more materials |
| GB9524159D0 (en) | 1995-11-25 | 1996-01-24 | Robobond Ltd | Method of ornamenting plastics articles |
| KR101380595B1 (en) * | 2012-06-18 | 2014-04-04 | 주식회사 토이앤퍼즐 | Method for Manufacturing Frame Used for Puzzle Pieces |
-
1994
- 1994-05-20 GB GB9410266A patent/GB2276318B/en not_active Expired - Fee Related
- 1994-07-12 AU AU67399/94A patent/AU669995B2/en not_active Ceased
- 1994-08-12 DE DE9412993U patent/DE9412993U1/en not_active Expired - Lifetime
- 1994-11-29 JP JP6294316A patent/JP2818120B2/en not_active Expired - Fee Related
-
1995
- 1995-03-27 CA CA002145561A patent/CA2145561C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2145561A1 (en) | 1995-10-27 |
| AU6739994A (en) | 1995-11-02 |
| GB2276318A (en) | 1994-09-28 |
| AU669995B2 (en) | 1996-06-27 |
| DE9412993U1 (en) | 1995-01-26 |
| JP2818120B2 (en) | 1998-10-30 |
| GB2276318B (en) | 1996-06-26 |
| GB9410266D0 (en) | 1994-07-13 |
| JPH07289402A (en) | 1995-11-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |