Optisize® HN2001 is a traditional bacterial α-amylase used as a basic component in textile desizing enzyme formulations. It can break down starch, starch derivatives, and starch/synthetic size blends on fabrics. Optisize® HN2001 has strong starch-degrading ability, quickly converting starch into dextrins that can be easily and completely removed in subsequent washing processes.
Optisize® HN2001 has long maintained the industrial standards of high quality, uniformity, and stability. The formulation of Optisize® HN is designed to be compatible with a wide range of chemical auxiliaries, making it easy for customers to formulate various desizing products.
|
Activity |
X RAU/ml (minimum) |
|
Appearance |
Yellow to brown liquid |
|
Specific Gravity |
1.1 |
|
pH |
≥ 5.8 |
Our company's Optisize® HN series activity is determined according to internal company standards, using synthetic starch as substrate (BGNP). Enzyme activity is expressed in RAU activity units.
1. Industrial standards of high quality, uniformity, and stability.
2. Wide pH working range.
Many factors can affect the desizing effect, such as:
1. Type and characteristics of the size
2. Size pick-up amount
3. Fabric construction
4. Process and equipment used
5. Subsequent processing steps
6. Water hardness, water quality conditions, etc.
Table 1: Process Parameters for Optisize® HN Series Desizing
|
Process Parameter |
Operating Range |
|
pH |
6.0–7.5 |
|
Temperature |
20–85°C |
Process Conditions
·Chelating Agents: Should not be used simultaneously with Optisize® HN enzyme. Hard water and common salts can enhance its stability.
·Chemical Auxiliaries: Wetting agents, detergents, scouring agents, or solvent rinses can be used with all Optisize® HN applications to enhance penetration and size swelling, while also aiding in the removal of waxes, dust, and synthetic sizes.
Generally, non-ionic surfactants are suitable for use with the enzyme, while cationic and anionic surfactants may impair enzyme activity.
During desizing applications, it is recommended to use lubricants together with desizing amylase to reduce fabric creasing and marring, especially during desizing in drum washers, jet dyeing machines, or during denim washing. The addition of a lubricant is recommended.
Whenever any chemical is used together with the enzyme, compatibility must first be checked and ensured.
Recommended Dosage
Table 2 serves as a general guide for determining the dilution ratio of the desizing enzyme based on the application characteristics of Optisize® HN2001.
|
Enzyme Base |
Dilution Ratio |
|
Optisize HN2001 |
1:1 |
|
Optisize HN500 |
1:4 |
Table 2: Dilution Ratios for Optisize® Enzymes
The prepared enzyme is used in the same way as Optisize® HN500. The recommended dosages for different process conditions are shown in the table below.
|
Equipment |
Dosage |
|
Winch |
0.5–1.0 g/L |
|
Automatic circulating dyeing machine |
0.5–1.0 g/L |
|
Jet dyeing machine |
0.5–1.0 g/L |
|
Jig dyeing machine |
1.5–2.0 g/L |
|
Drum washer |
1.0–2.0 g/L |
|
Batch padding (batching) |
2.0–6.0 g/L |
|
Cold pad-batch |
4.0–6.0 g/L |
|
Hot pad-batch |
2.0–6.0 g/L |
|
Continuous process |
4.0–6.0 g/L |
Table 3: Enzyme Dosage Guidelines for Various Process Conditions
Note: The above dosages are for reference only. In actual use, they must be adjusted based on experimental results.
Packaging
Optisize HN2001 is available in 25 kg and 30 kg plastic drums.
Storage
Optisize HN amylase should be stored at 25°C or lower in a cool, dark, dry, and clean environment.
Safety and Enzyme Management
Inhalation of enzyme dust and mist should be avoided. In case of accidental splashing onto skin or eyes, rinse immediately with water for more than 15 minutes.
For detailed management information, please refer to the relevant Material Safety Data Sheet, the Enzyme Technical Association (ETA) handbook "Safe Use of Enzymes," and the Association of Manufacturers of Fermentation Enzyme Products (AMFTA) handbook "Safety Management Guidelines for Microbial Enzyme Preparations."
Technical Service
Our company can provide information on special product applications. We are committed to working with customers to improve production processes and solve practical problems. Please let us know your needs, and we will do our best to serve you.
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