Before bulk production sample dyeing must need. Normally a textile dyeing mill gets an offer through a merchandiser. Merchandising department of the dyeing mill send the swatch to the central dyeing lab. Then dyeing lab manager dyeing the sample in the following way. Flow Chart of Sample Dyeing Process is as follows:
Flow chart of Sample Dyeing Process
The laboratory dyeing process is as follows:
Standard is checked with the Reference from the inventory
If matched then sample prepared from that recipe
If not matched than the color percentage is calculated by using Data Color
The sample prepared according to recipe
Standard (From Buyer) and Sample prepared is Compared
If Okay then the sample is sent to Buyer
Buyer approves the sample and order for the bulk production.
The above process is described shortly:
Sample Received: Buyer sends a sample that is considered standard in the whole process. The buyer also gives some requirements about the properties of the standard fabric. For example, the Buyer wants good wash fastness, light fastness, rubbing fastness, pilling formation, etc. The lab receives this standard to make this fabric according to buyer requirements.
Standard is checked with the Reference from the inventory: The factory dyed a lot of fabric in its running years. It also stores a lot of samples in its inventory. The standard is first checked with the samples kept in the inventory.
If matched then sample prepared from that recipe: If the standard is matched with the sample of inventory then the next process becomes easier. Because after matching the sample with a standard previously maintained recipe is followed. If the sample does not match with the standard then the process goes to data color.
If not matched then the color percentage is calculated by using Data Color: If the standard does not match with the samples of inventory, then the standard percentage of color is found out from the data color machine.
Recipe Prepared: According to the results of the data color machine the recipe is prepared to get the desired sample of that standard.
The sample prepared according to the recipe: Following the procedure, the sample is prepared.
Standard (From Buyer) and Sample prepared are Compared: After getting the sample is compared with the standard. And several tests are done to meet the buyer’s requirement.
If Okay then the sample is sent to the Buyer: Sample is then sent to the buyer for final approval.
Buyer approves the sample and order for the bulk production: When the buyer gives the final approval the fabric is sent to the production floor for bulk production.
Author of this Article: Rana Sohel Executive Engineer Sunman Textile Mills Ltd. Chittagong Cell: +8801912-420118 Email: [email protected]