CA2064138A1 - Gas-permeable molding wire - Google Patents
Gas-permeable molding wireInfo
- Publication number
- CA2064138A1 CA2064138A1 CA002064138A CA2064138A CA2064138A1 CA 2064138 A1 CA2064138 A1 CA 2064138A1 CA 002064138 A CA002064138 A CA 002064138A CA 2064138 A CA2064138 A CA 2064138A CA 2064138 A1 CA2064138 A1 CA 2064138A1
- Authority
- CA
- Canada
- Prior art keywords
- wire
- gas
- raised
- patterning
- permeable
- 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.)
- Abandoned
Links
- 238000000465 moulding Methods 0.000 title description 6
- 238000000059 patterning Methods 0.000 claims abstract description 19
- 239000011093 chipboard Substances 0.000 claims abstract description 5
- 239000011094 fiberboard Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- -1 e.g. Substances 0.000 description 1
Landscapes
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
(57) ABSTRACT OF THE DISCLOSURE
A gas-permeable wire (1) for board pressing in the manufacturing of cement-bonded board, fiberboard or chipboard or a similar product is disclosed. The invention is implemented by complementing the wire (1) with a raised patterning (2) that embosses the surface of the wire to be pressed.
Figure 1
A gas-permeable wire (1) for board pressing in the manufacturing of cement-bonded board, fiberboard or chipboard or a similar product is disclosed. The invention is implemented by complementing the wire (1) with a raised patterning (2) that embosses the surface of the wire to be pressed.
Figure 1
Description
. c`~ ~.3 GAS-PERMEABLE MOLDING WIRE
The present invention relates to a gas-permeable molding wire for board pressing in the manufacturing of cement-bonded board, fiberboard or chipboard or a similar product.
Conventionally known are different methods for producing a desired surface texture on a board during the pres~ing of the board. However, all such methods concern board pressing using wires which are nonpermeable to gases~ Gas-permeable wires have found use in, e.g., curing w:ith carbon dioxide, whereby the use of carbon dioxide achieves a faster setting of the cement-bonded board. Also known in the art is curing with steam, in which method steam is blown through a hardening fiberboard or chipboard to quicken its setting.
Gas-permeable wires have until now been noncompatible with raised patterning which is necessary for pro~ucing a desiredly patterned texture on the product to be pressed, since the conventional methods of applying a raised patterning tend to block the wire, thereby pre~enting sufficient permeation of gases through the wire.
It is an object of the present invention to achieve raised patterning on a gas-permeable wire in such a manner that retains the advantage of curing with a gas despite the added raised patterning. The molding wire according to the invention is characterized in that the wire complemented with a raised patterning which produces a desiredly patterned texture on the board to be pressed.
A preferred embodiment of the invention is characterized in that the raised patterning is made from a gas-impermeable material~
Another preferred embodiment of the invention is characterized in that the wire with the raised patterning has both gas-pe~neable and gas-impermeable surfaces placed in an alternating order essentially regularly spaced.
A further another preferred embodiment of the invention is characterized in that the raised patterning imitates a wood-grain texture.
The invention achieves a raised patterning on the wire that does not, however, fully cover the wire, thus e~entially retaining the permeability of the! wire to gases.
In the following the invention is examined in greater detail with the help of a preferred embodiment by making reference to attached drawings, in which Figure 1 shows a part of a gas-permeable molding wire furnished with a raised pattern for wood grain imitation according to the invention, Figure 2 shows the diagram of Fig. 1 sectioned along the line II-II.
A gas-permeable wire 1 is employed as described above when a gas such as, e.g., carbon dioxide is blown through a cement-bonded board during its pressing, thereby accelerating thesetting of the board. So-called steam curing can be useds for the same purpose in the manufacturing of fiberboard and chipboard.
The arrow drawn below the diagram of Fig. 1 indicates the machine direction of the wire 1. In the illustrated case the wood grain imitation rais~d pattern 2, which then embosses the surface of the board to be pressed, is drafted only on a portion of the wire, thus making it easier to elucidate the manner in which the raised pattern 2 is formed on the surface of the wire 1. In practice the pattern can spread over the entire surface of the wire, and obviously, any other pattern 3 ~
different from the wood grain imitation pattern can be employed. The material from which the raised pattern is formed typically i~ nonpermeable to gases, but the invention poses no hindrances to the pos3ibility of using a ga~-permeable material for this purpose.
The raised pattern 2 is formed ont:o the gaq-permeable wire l from a material behaving like, e.g., a paste or putty and having the properties of adhering to and setting on the wire.
The crucial point of the invention is in that the blockin~ of larger areas with the raised pattern Eorming material is avoided, but rather, an alternating order of raised pattern and free areas at an essentially constant Qpacing is employed. In the wood grain imitation pattern shown in the diagram, the width b of the raised pattern area forming the imitation grain texture is typically ~maller than l cm, as well a~ the width a of the area free from the patterning material. This approach retains the advantageous properties of gas permeability in the molding wire despite the applied raised patterning.
For those versed in the art it is obvious that the invention is not limited to the exemplifying embodiment described above, but instead, can be varied within the appended claim~.
Therefore, the detailed description of the apparatus necessary for forming the raised patterning is omitted, since the design of such an apparatus is self-evident to a craftsman on the basis of this application. Of course, the material employed for raised patterning can be applied u~ing manual methods.
The present invention relates to a gas-permeable molding wire for board pressing in the manufacturing of cement-bonded board, fiberboard or chipboard or a similar product.
Conventionally known are different methods for producing a desired surface texture on a board during the pres~ing of the board. However, all such methods concern board pressing using wires which are nonpermeable to gases~ Gas-permeable wires have found use in, e.g., curing w:ith carbon dioxide, whereby the use of carbon dioxide achieves a faster setting of the cement-bonded board. Also known in the art is curing with steam, in which method steam is blown through a hardening fiberboard or chipboard to quicken its setting.
Gas-permeable wires have until now been noncompatible with raised patterning which is necessary for pro~ucing a desiredly patterned texture on the product to be pressed, since the conventional methods of applying a raised patterning tend to block the wire, thereby pre~enting sufficient permeation of gases through the wire.
It is an object of the present invention to achieve raised patterning on a gas-permeable wire in such a manner that retains the advantage of curing with a gas despite the added raised patterning. The molding wire according to the invention is characterized in that the wire complemented with a raised patterning which produces a desiredly patterned texture on the board to be pressed.
A preferred embodiment of the invention is characterized in that the raised patterning is made from a gas-impermeable material~
Another preferred embodiment of the invention is characterized in that the wire with the raised patterning has both gas-pe~neable and gas-impermeable surfaces placed in an alternating order essentially regularly spaced.
A further another preferred embodiment of the invention is characterized in that the raised patterning imitates a wood-grain texture.
The invention achieves a raised patterning on the wire that does not, however, fully cover the wire, thus e~entially retaining the permeability of the! wire to gases.
In the following the invention is examined in greater detail with the help of a preferred embodiment by making reference to attached drawings, in which Figure 1 shows a part of a gas-permeable molding wire furnished with a raised pattern for wood grain imitation according to the invention, Figure 2 shows the diagram of Fig. 1 sectioned along the line II-II.
A gas-permeable wire 1 is employed as described above when a gas such as, e.g., carbon dioxide is blown through a cement-bonded board during its pressing, thereby accelerating thesetting of the board. So-called steam curing can be useds for the same purpose in the manufacturing of fiberboard and chipboard.
The arrow drawn below the diagram of Fig. 1 indicates the machine direction of the wire 1. In the illustrated case the wood grain imitation rais~d pattern 2, which then embosses the surface of the board to be pressed, is drafted only on a portion of the wire, thus making it easier to elucidate the manner in which the raised pattern 2 is formed on the surface of the wire 1. In practice the pattern can spread over the entire surface of the wire, and obviously, any other pattern 3 ~
different from the wood grain imitation pattern can be employed. The material from which the raised pattern is formed typically i~ nonpermeable to gases, but the invention poses no hindrances to the pos3ibility of using a ga~-permeable material for this purpose.
The raised pattern 2 is formed ont:o the gaq-permeable wire l from a material behaving like, e.g., a paste or putty and having the properties of adhering to and setting on the wire.
The crucial point of the invention is in that the blockin~ of larger areas with the raised pattern Eorming material is avoided, but rather, an alternating order of raised pattern and free areas at an essentially constant Qpacing is employed. In the wood grain imitation pattern shown in the diagram, the width b of the raised pattern area forming the imitation grain texture is typically ~maller than l cm, as well a~ the width a of the area free from the patterning material. This approach retains the advantageous properties of gas permeability in the molding wire despite the applied raised patterning.
For those versed in the art it is obvious that the invention is not limited to the exemplifying embodiment described above, but instead, can be varied within the appended claim~.
Therefore, the detailed description of the apparatus necessary for forming the raised patterning is omitted, since the design of such an apparatus is self-evident to a craftsman on the basis of this application. Of course, the material employed for raised patterning can be applied u~ing manual methods.
Claims (5)
1. A gas-permeable wire (1) for board pressing in the manufacturing of cement-bonded board, fiberboard or chip-board or a similar product, c h a r a c t e r i z e d in that the wire (1) is complemented with a raised patterning (2) that embosses the surface of the wire to be pressed.
2. A wire as defined in claim 1, c h a r a c t e r -i z e d in that the raised patterning (2) is made from a gas-impermeable material.
3. A wire as defined in claim 1 or 2, c h a r a c t e r -i z e d in that the wire with the raised patterning (2) has both gas-permeable and gas-impermeable areas placed in an alternating order essentially regularly spaced.
4. A wire as defined in any foregoing claim 1...3, c h a r a c t e r i z e d in that the raised patterning (2) produces a wood grain imitation texture.
5. A wire as defined in any foregoing claim 1...4, c h a r a c t e r i z e d in that the raised patterning (2) of the wire (1) is made of paste-like material capable of adhering to the wire.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI911494 | 1991-03-27 | ||
| FI911494A FI89881C (en) | 1991-03-27 | 1991-03-27 | Gas permeable mold viruses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2064138A1 true CA2064138A1 (en) | 1992-09-28 |
Family
ID=8532205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002064138A Abandoned CA2064138A1 (en) | 1991-03-27 | 1992-03-26 | Gas-permeable molding wire |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2064138A1 (en) |
| FI (1) | FI89881C (en) |
| MX (1) | MX9201358A (en) |
-
1991
- 1991-03-27 FI FI911494A patent/FI89881C/en active
-
1992
- 1992-03-26 MX MX9201358A patent/MX9201358A/en not_active Application Discontinuation
- 1992-03-26 CA CA002064138A patent/CA2064138A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FI911494A (en) | 1992-09-28 |
| FI911494A0 (en) | 1991-03-27 |
| FI89881C (en) | 1993-12-10 |
| FI89881B (en) | 1993-08-31 |
| MX9201358A (en) | 1992-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |