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■Damage prevention for wire-reinforced glass
For both wire-reinforced glass and regular glass, external forces such as temperature stress, force of impact, pressure stress exceeded the strength of the glass.
Accordingly, in order to prevent this damage, it is necessary to: |
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(1) Keep external forces as small as possible.
(2) Improve the strength of the glass (remove factors reducing glass strength). |
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Incidentally, in the case of wire-reinforced glass, unlike general sheet glass, when it is cut the wire grid is exposed on the cross-section. Accordingly, if not adequately waterproofed, condensation or rain can seep into the wire, causing rusting.
Then, as time goes by, this rust progresses markedly, causing the wire to expand in volume and apply pressure to the glass. This causes small cracks, which in turn reduces the glass edge strength. According to the condition of the external force, the glass can be damaged.
Accordingly, the most effective method to prevent this kind of damage is to perform a watertight (sealant) procedure that prevents water intrusion on the glass cross-section. However, when the watertight procedure cannot be undertaken for various reasons including that the glass is in a sash, it is important to minimize damage to the glass by taking steps to stop any water entering from contacting the wire grid as much as possible, thus limiting the process of corrosion.
Wireguard, as profiled here, is a new anti-rust coating specifically for wire-reinforced glass. It features simple coating application, stopping rust of the reinforcing wire and preventing damage to the glass. |
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■Characteristics of Wireguard
Wireguard is a fluorine resin system anti-rust coating developed specifically by Seimi Chemical for use with wire-reinforced sheet glass. Wireguard possesses the following characteristics, making it highly effective against rust |
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| 1. |
Outstanding anti-rust action, with a dual effect from resin blocking the water and fluorine repelling the water. |
| 2. |
No special tools needed, making labor comparatively easier than other anti-rust treatments |
| 3. |
Short drying time. (Bead attachment possible in 3~5 minutes) |
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■Damage and its prevention for wire-reinforced glass
For both wire-reinforced glass and regular glass, external forces such as temperature stress, force of impact, pressure stress exceeded the strength of the glass.
Accordingly, in order to prevent this damage, it is necessary to: |
|
(1) Keep external forces as small as possible.
(2) Improve the strength of the glass (reduce factors reducing glass strength). |
|
Incidentally, in the case of wire-reinforced glass, unlike general sheet glass, when it is cut the wire is exposed on the cross-section. Accordingly, if not adequately waterproofed, condensation or rain can seep into the wire, causing rusting.
Then, as time goes by, this rust progresses markedly, causing the wire to expand in volume and apply pressure to the glass. This causes small cracks, which in turn reduces the glass edge strength. According to the condition of the external force, the glass can be damaged.
Accordingly, the most effective method to prevent this kind of damage is to perform a watertight (sealant) procedure that prevents water intrusion on the glass cross-section. However, when the watertight procedure cannot be undertaken for various reasons including that the glass is in a sash, it is important to minimize damage to the glass by taking steps to stop any water entering from contacting the wire section as much as possible, thus limiting the process of corrosion.
Wireguard, as profiled here, is a new anti-rust coating specifically for wire-reinforced glass. It features simple coating application, stopping rust of the reinforcing wire and preventing damage to the glass. |
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■The anti-rust benefits of Wireguard
The following experimental results demonstrate the anti-rust benefits of Wireguard. |
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| Experimental Results for Wireguard (Anti-Rust Benefits) |
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| Method |
Conditions |
Frequency of crack formation |
Remarks |
| Coating |
Untreated |
Indoor exposure
Test material: 150x300mm
Number of wires exposed: 72
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150 days
300 days
700 days
900 days |
0 items
1
2
2 |
23items
87
113
- |
Set out on balcony |
Three% salt solution (accelerated test)
Number of wires exposed: 72
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Cycles
20
60 |
1
5 |
31
95 |
One cycle represents 8 hours exposed to air after 16 hours of soaking |
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| ★ |
The number of small cracks is higher than the number of wires exposed, because 2 or more cracks are coming from the same length of wire. These results show that the occurrence of small cracks is reduced by 1 in 20 to 1 in 50. |
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| 2. |
Construction record of Wireguard
After 2 years or so in development, Wireguard was released for sale in 1974.
Wireguard-treated wire-reinforced glass, some of it has been being used for about 19 years, has resisted almost all damage up to the present day. |
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■Precautions for Use
The toxicity of the Wireguard membrane itself is low, but since it uses an organic solvent (Regulations for Class 2 Organic Material under Japan Industrial Safety and Health Law), please perform all work in a well-ventilated location. Under Japan's Fire Defense Law, its inflammability is considered as a Class 4 Dangerous Article, Group 1 Petroleum product. |
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