Shear compound is one of the most important polymer products in the packaging industry. This product is produced using a combination of polymers, fillers and additives and is used for packaging products. Due to its physical and chemical properties, this compound is suitable for packaging products that have been improperly produced or need to be protected against moisture, dust, insects and microorganisms.
In the production of this compound, polymer materials such as polyethylene and polypropylene are used, which are suitable for product packaging due to their physical and chemical properties. By adding fillers and additives, these materials add properties such as increased flexibility, resistance to coarseness, heat resistance, and resistance to breaking to shearing compound. As a result, this product is suitable for packaging products that have been improperly produced or need to be protected against various factors.
Definition of shearing compound
History
The shearing compound is one of the most important polymer raw materials in manufacturing various plastic products. This material is produced by combining different powders or granules with polymers to create different properties in plastic products.
The history of sheer compound dates back to the 1960s, when this material was experimentally produced. However, with the advancement of technology and the development of industrial production methods, creating this material began on an industrial scale.
Types of shearing compound
Shearing compounds are diverse in terms of type and raw materials. Some varieties are the following:
- Polystyrene compound: This compound is a combination of polystyrene with fillers such as titanium dioxide and calcium carbonate. It is suitable for the production of resistant and light plastic products.
- Polypropylene compound: This compound is produced by combining polypropylene with fillers such as talc and calcium carbonate. This compound is used to manufacture plastic products with high resistance and lightweight.
- Polyethylene compound: This compound is produced from the combination of polyethylene with fillers such as talc and calcium carbonate. This compound is suitable for producing resistant and lightweight plastic products.
Each of these types of shearing compounds has its properties and applications.
Shearing compound
applications
Packaging Industry
Shiring compound is used in the packaging industry for packing products that need to maintain freshness and increase shelf life due to its high heat absorption properties. This compound is used for packaging food, alcohol, medicine, cosmetic and health products, electronic equipment, etc. Cheese, meat, fruits and vegetables, electronic components, etc are among the products that are packed using the shearing compound.
Electronic
Shiring compound is also used in the electronics industry due to its low thermal leakage, high resistance to environmental conditions, and high mechanical properties. This compound is used for packing many electronic components such as printed circuits, mobile phone parts, tablets, laptops, etc.
Due to its properties, the shearing compound is used in various industries such as packaging and electronics.
Shearing compound production process
Raw materials
Raw materials such as polyethylene and polypropylene, along with chemicals and different colours are used to produce shearing compounds. Each of these raw materials is used for specific properties in Shiring compounds.
Production methods
In the shearing compound production method, first, the raw materials are mixed with precise ingredients in a mixer. Then this mixture is placed in the extruder machine. In the extruder, raw materials are blended at high temperatures and pressure and become a uniform material.
After that, the material comes out of the extruder as a strip. At this stage, different colours may be added to the material. The strip is then turned into a large sheet and cut into all sizes.
Finally, sheets of shearing compound are used to support various products such as nuts and dried fruits, sweets, chocolates, etc.
This method of producing Shearing compound is used for this type of product’s manufacturing due to its simplicity and efficiency.
Shearing compound quality criteria
Standard tests
To guarantee the quality of the compound, standard tests should be performed on the product.
These tests include measuring the physical and chemical properties of the product, including thickness, specific gravity, tensile strength, fracture resistance, and solids content. Also, tests are conducted to check the thermal properties, such as softening and solidification temperature.
Resistance to environmental factors
Shearing compounds must be resistant to environmental factors to function properly and preserve products against various factors. Some of these factors include humidity, heat, light, oxygen and UV rays.
The moisture resistance test is performed at high and low temperatures to check the compound's resistance to moisture. Also, a heat resistance test is performed at high and low temperatures, to check heat resistance, and the light and UV rays resistance test is performed to check the resistance to light and UV rays.
According to these quality criteria, shiring compound manufacturers must use high-quality raw materials and follow a precise and standard production process to ensure product quality.
Challenges and technical solutions in the shearing compound industry
In the shearing compound industry, some technical challenges can be solved using suitable solutions. Some of these challenges and their technical solutions are discussed below:
Fusion and composition problems
In the shearing compound industry, problems such as improper melting and heterogeneous composition of materials may occur. To solve these problems, techniques such as adjusting the melting temperature, using additives and increasing the amount of turbulence in the production process can be used.
Durability issues
The durability of compounds can be one of the technical challenges in this industry. To solve this problem, methods such as using additives like antioxidants, increasing the thermal stability and suitable methods for compound packaging can be used.
Physical properties problems
In some cases, the physical properties of the shearing compound may differ from the intended properties. To solve this problem, techniques such as changing the percentage of different materials, using additives and appropriate manners in the production process can be used.
It is possible to solve many technical challenges in the shearing compound industry and improve the quality of products using appropriate solutions.
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