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本帖最后由 lczlcz 于 2015-1-18 20:54 编辑
看了,那个没有讲到关键点,就是贴膜后玻璃不是weakness,而是边框frame是weakness. 你youtube看下其他的试验就知道了.玻璃不会破,但可能被人用力打窗框边沿把那个打开.
所以dealer安装的时候都把膜直接贴到frame上面然后用强力胶固定.
google "does window security film work"
第一条就说这个没用:
http://www.vententersearch.com/?p=199
Firemen discussing breaching hurricane windows (factory made with security film).
The whole site is good to learn how people with training and tools go about busting into secured areas quickly.
And for learning just how easily gotten around most building security is with only a few items, like a halligan and a k12 style saw http://www.firehouse.com/forums/ ... 2-Style-Saw-for-RIT
and blades.
He has found that a pruning saw makes quick work on them, and caries a small folding saw in his pocket for that purpose.
He has noticed a significant increase in the popularity of hurricane windows in his coastal area of Florida. For obvious reasons hurricane windows don't break like traditional windows. They are laminated, and designed to remain in place even after taking a significant impact. He has found that using a halligan to create a purchase point and using the saw to be quite effective. Once the purchase is made, the saw can be used to "clear" the window. This method works well if a window needs to be opened in a hurry, without having the proper equipment readily available.
A saw would be the tool of choice if multiple windows need to be opened. Obviously the preferred method would still be to take the entire frame out, and the glass shouldn't be too much of an issue. Another interesting observation about hurricane windows is that they tend to be mounted flush regardless of the type of building construction being used. The old trick of flush mount = wood frame, and recessed (with sill) = block or masonry may not be as much of a tell tale sign as it used to be.
第二条解释了这个贴膜的原理:
cwh SuperDork
Nov. 29, 2010 10:27 a.m.
OK, Security Expert here. Some of the window film is effective, but relies on the window frame to provide strength. The film does not keep the glass from breaking, it keeps it from coming apart. If the broken glass can be pushed out of the frame, no good (主意: 这句很关键). 3M makes a good one. An alternative to this would be polycarbonate clear sheet plastic, 1/4" thick. This will, if properly mounted, stop a concrete block from coming through your window. I had recorded video of a burglar throwing a brick at one of these at a porno shop. Bounced back and hit him in the head. Fun times. Understand that over a period of time, the plastic will become cloudy. As far as the alarm system is concerned, there are companies that will offer alarm monitoring without a long contract, for as little as 20.00 per month.. Also, I am a great believer in making as much noise as possible. Inside, outside, at least 30 watt sirens. The sirens included with most of the cheapy systems from Brinks and ADT are next to useless. I used to install two 30 watt horns above the entry door to stores. Never had a successful burglary. There are also voice dialers that can call your cell phone and read off a message. Police will not accept those calls, though. PM me if you want more info. Chuck
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所以, 我的结论是装这个东东不太合算. 比较贵, 但基本没用. 性价比太低.
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发表于 2015-1-18 20:08
发表于 2015-1-18 20:16
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