噪音危險是包裝機械常見機械風險中的一項，申請CE認證時必須要考核和滿足的要求

Noise噪音危險

Noise generated by packaging machines can result in: 包裝機產生的噪音可導致:

— permanent hearing loss; 聽力損失

— tinnitus; 耳鳴

— fatigue, stress, etc.; 疲勞,壓力等;

— other effects such as loss of balance, loss of awareness; 其他影響，如失去平衡，失去意識;

— interference with speech communication; 干擾語音交流;

— inability to hear acoustic warning signals. 無法聽到聲音警告信號。

Noise reduction噪聲消減

The main sources of noise on packaging machines are:

包裝機械的主要噪音來源有:

a) drive mechanisms; 驅動機制;

b) vacuum pumps; 真空泵

c) compressed air exhaust; 壓縮空氣排氣;

d) products (e.g. glass bottles and cans) or machine parts hitting against each other;

產品(如玻璃瓶及易拉罐)或機器零件互相碰撞;

e) packaging materials, e.g. unreeling strap or film; 包裝材料，例如解開帶子或薄膜;

f) mechanisms hitting against each other, e.g. during the welding process;

相互碰撞的機構，例如在焊接過程中;

g) conveyors. 輸送帶

Packaging machines shall as far as is reasonably practicable be designed to reduce noise at its source.

包裝機械的設計應在合理可行的范圍內，從源頭上減少噪音。

Measures to minimize or eliminate noise at source include the following:

減少或消除噪音的措施包括:

h) designing mechanisms so that they do not hit against each other;

設計一種機制，使它們不會相互碰撞;

i) using rubber rollers; 使用橡膠輥;

j) using timing belts instead of chains; 使用正時皮帶代替鏈條;

k) using helical instead of straight cut gears; 采用螺旋齒輪代替直齒;

l) limiting the running speed or pressure or other energy of the machine or auxiliaries;

限制機器或輔助設備的運行速度、壓力或其他能量;

m) using vibration isolators; 使用振動器;

n) fitting air exhausts with silencers; 在排氣口加裝消音器;

o) use of damping materials on vibrating or impacted metal surfaces to reduce resonance; 在振動或受撞擊的金屬表面使用阻尼材料以減少共振;

p) installing acoustic absorptive materials on the inside of machinery casings;

在機械外殼內部安裝吸聲材料;

q) fitting partial or full acoustic enclosures. 安裝部分或全部隔音罩。

The criterion for assessing the efficiency of noise reduction measures is the actual noise emission values of the machine and not the nature of the reduction measure itself.

--源自EN 415-10: 2014 Safety of packaging machines- Part 10: General Requirements包裝機械的安全。第10部分:一般要求