Last updated on November 29th, 2023 at 02:47 pm
A wet processing technology which uses air in form of dispersion foam for the media of application is called foam finishing.
The process consists of mechanically forming a suitable formulated finish or dye formulation and then applying the foam to textile fabrics. Collapse of the foam distributes the finish on the substrate. The fabric is then subjected to conventional drying and fixing operations. The foam process is currently used in plants for durable press finishing, shrinkage control and softener application to a variety of cotton and polyester cotton blend fabrics.
Foam finishing
It is a high concentration of working solution by adding finishing foam (usually surface active agent) recycling equipment mixed with air to form a certain quality of foam, and then put bubble device to impose uniform foam to the fabric surface of a processing technology.
Advantages
- In terms of environmental protection it saves energy by more than 50% and saves chemicals by 10 – 40%, reducing petroleum consumption and cost.
- Save energy: Low-band fluid volume, low heat less, low use of chemical reagents.
- Improve production efficiency due to higher speed of fabrics, low liquor content and reduced processes.
- Improved hand feels of fabrics and enhanced distributions of chemicals.
- Reduces the loss of fibre strength and improves the product quality.
- Wet-on-wet technique processing is possible.
- Foam finishing also enhances product variety. Some noble effects can be produced which is unattainable by normal pad finishing method.
- Different types of finishing chemicals can be applied simultaneously to both sides of the fabric of high GSM.
- Reducing environmental pollution has good social and ecological benefits.
- Can shorten the device length, plant size and reduce investment.
Disadvantages
- High capital equipment cost.
- Greater care and skill is necessary.
- Limited range of applicable product.
- In some cases problem with penetration and levelness.
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