|
|
| |
 |
一、Instruction of Felt’s standards and Type
Raise the serial number thickness and length you demand accordingto standard class number when you order felts。If you need dyeing felts，you can raise colour demands。
1、The technological （serial number of felts）consist of five numbers。The first one indicates 。The colour of the products；the second induct。The fourth and fifth indicates the density of the pfoducts。
Instruction：
（1）T212-32~44 stands for the code name thinnest white felt 0.32g/cm3 to 0.44g/cm3 per volume weight。
（2）T112-41 6mm×1016mm×1016mm，stands for thin white
special felt ，per volame weight is 0.41g/m3，theckness is 6mm，length and width are 1016mm separately。
（3）112-41 6mm×1016mm×1016mm stabds for thin white woolen general felt。
2、When you order felt wheel and felt product parts ，you should raise the product number and offer the drawing data of the parts。The deviation of the parts’ size is usage，it can be raised seperately and solved between both sides 。
二、The specific Property of Felt
Most of the felts are made of natural wool，others are mode of other kind of fur 。It doesn’t change the physical nature 。Their fnain features are as the following：
1、Rich in hing resilisence ，it can be used as material of quakeproof，seal liner and spring felt。
2、Because of good property，it is hard to loose and can be cut into parts of different shapes。
3、Having good wearability ，it can be used as material of heat and thermal insulation。
4、Because it has close weave and small opening，and its thickness is not timited as the interweave things，it can be used as good material of filter。
5、Having good wearbility，it can be used as materical of pelisling。
三、Instructions for selecting Felt
1、The felt’s per volume weight （g/cm3）can be neither too big （it will lose spring）nor too small Both it’s thickness and the far’s thickness have effect on different properties。The user can select accoridingto your own requirement，but youd’d better be told the usage of the products in to avoid the production。
2、Ae present there ane two kinds of felt：special grade felt and general felt。They are divided according to the thickness of raw material；size of per volume weight and the difference of colour。Technlogical。The user can select it according to his own requiremet .It can be a checking standard when check up。 |
|
|
|
