Introduction
Starch adhesive is a type of adhesive made from starch, which is derived from various sources such as corn, potatoes, and rice. This adhesive is commonly used in the paper and packaging industry, as well as in the manufacturing of corrugated cardboard boxes, paper bags, and envelopes.
Raw Materials
The first step in the manufacturing process of starch adhesive is to obtain the raw materials. The most commonly used raw materials are corn, potatoes, and rice. The starch is then extracted from these raw materials using a variety of methods such as wet milling, dry milling, and acid hydrolysis.
Wet Milling
In wet milling, the raw material is soaked in water for a period of time, and then ground into a slurry. The slurry is then sieved to remove any impurities, and the starch is separated from the water using centrifugation.
Dry Milling
In dry milling, the raw material is ground into a fine powder, and then mixed with water to form a slurry. The slurry is then sieved to remove any impurities, and the starch is separated from the water using centrifugation.
Acid Hydrolysis
In acid hydrolysis, the raw material is treated with an acid such as hydrochloric acid or sulfuric acid, which breaks down the starch into glucose. The glucose is then separated from the acid using a variety of methods such as ion exchange, evaporation, and crystallization.
Preparation of Starch Adhesive
Once the starch has been extracted from the raw material, it is then processed to create the starch adhesive. The starch is mixed with water and heated to a temperature of around 80°C. This causes the starch to swell and gelatinize, forming a thick paste. The paste is then cooled and stored until it is ready to be used.
Application of Starch Adhesive
Starch adhesive is applied to various surfaces using a variety of methods such as spraying, roller coating, and brush application. The adhesive is then allowed to dry, forming a strong bond between the surfaces.
Conclusion
The manufacturing process of starch adhesive is a complex process that requires careful handling and processing of the raw materials. With the right equipment and expertise, it is possible to produce high-quality starch adhesive that can be used in a variety of applications.
Tips for Using Starch Adhesive
When using starch adhesive, it is important to ensure that the surfaces to be bonded are clean and dry. This will ensure that the adhesive bonds properly and forms a strong bond. It is also important to follow the manufacturer’s instructions for application and drying times to ensure that the adhesive bonds properly.
Review of Starch Adhesive
Starch adhesive is a versatile and cost-effective adhesive that is widely used in the paper and packaging industry. It is easy to use, environmentally friendly, and produces a strong bond between surfaces. However, it is important to choose the right type of starch adhesive for the application, as some types may not be suitable for certain surfaces or environments.
Tutorial: How to Make Your Own Starch Adhesive
If you are interested in making your own starch adhesive, there are a few simple steps that you can follow. First, obtain the raw materials such as corn or potatoes. Then, extract the starch using a method such as wet milling or dry milling. Mix the starch with water and heat it to around 80°C to form a thick paste. Allow the paste to cool and store it until it is ready to be used. Apply the adhesive to the surfaces using a method such as spraying or roller coating, and allow it to dry.