Density test method

QC/001
Standard operation
Reviewed by Quality Manager
Approved by Quality Manager
Foam Specific Density Test
Method
Issued date 10/31/08

Version 00

1. Sampling:
1) EPE Foam (roll):
For each lot, choose 3 set of 5 samples, each set from a different roll, dimension:
100*100mm±10mm. Then number those samples.
2. Test method:
2.1 Weight: Use a scale to weigh each piece of sample, accurate to 0.1g, then record as P1, P2, P3.
2.2 Volume: Use volume displacement method to get the volume of each sample.
1) Test equipment: a. 1 graduated cylinder of 1000ml (accurate to 10ml); b. a metal frame.
2) Put the metal frame into the cylinder, pour some fresh water into the cylinder, stop when the
water level is enough. Record this water level as V
3) And then put the sample with the frame into the water;
4) When the water stops moving inside the cylinder, observe the reading of the water level in the
cylinder, record as Vt1
5) Lift the metal frame vertically out of the water, take out the sample. Then put the metal frame
into the cylinder and add more water into the cylinder until the water level is the same as V, and
repeat the same as 2), 3), 4) above.
6) The result of Vt1,Vt2 & Vt3 minus V getting the volume of sample as V1, V2 & V3
2.3 Calculate the density of the sample Di (g/c㎡):
Đo mật độ của mẫu là Di(g/c cm2)
Di = Pi/ Vi
The density of each sample shall be recorded as Di (D1, D2, D3), then calculate the average density
D(g/c㎡) : D = (D1+D2+D3) / 3

1。采样：
1）EPE片材：
对于每一个批次，选择5个样品3套，每一套不同的片材尺寸：100* 100MM±10毫米。然
后这些样品如下方法进行测试
.

2。测试方法：
2.1重量：用一个尺度去衡量每一块样品，精确至0.1g，然后记录为P1，P2，P3的。
2.2体积：使用位移量的方法来获得每个样品量。
1）测试设备：A. 1千毫升量筒（精确到10ml）;B ,金属框架。
QC/001
Standard operation
Reviewed by Quality Manager
Approved by Quality Manager
Foam Specific Density Test
Method
Issued date 10/31/08

Version 00

2
）放入缸中的金属框架，倒入一些新鲜的水进入气缸，停止时的水位是足够的。记录此水
位为
V

3），然后把样品入水框架;
4）当水停止气缸内的移动，在汽缸内观察，记录水位读数为VT1
5
）电梯垂直出水中的金属框架，取出样品。然后把进入气缸的金属框架，并添加更多的水
进入气缸，直到水位为V相同，并重复相同为2），3），4）以上。
6）VT1，VT2和VT3减去V，V1，V2和V3的样本量
2.3计算样品的密度DI（G/ C㎡）：
DJO垫ĐộCUA茂拉迪（G / C平方厘米）
DI = PI / VI
应迪（D1，D2，D3）记录每个样品的密度，然后计算平均密度D（G / C㎡）：D=（
D1+ D2

+ D3）/3