Customized Extruded Screw for Small Puffed Corn Snacks Food Machine

Product Description

Product Description
The main screw and barrel of the split twin screw extruder adopt advanced "building block" design. The screw is composed of various screw blocks installed on the core shaft and inner lining of the cylinder, forming a sleeve that can be adjusted according to different screw blocks. The ideal structure of the screw components can be flexibly combined according to the process requirements of the material variety, achieving the transportation, refining, shearing, and discharging of materials. This effectively solves the contradiction between the universality and specificity of the screw that is difficult to consider and achieves the goal of one machine with multiple functions. Another advantage of the "building block" design is that worn screw and cylinder components can be partially replaced, avoiding the scrapping of the entire screw or cylinder, greatly reducing the maintenance costs.

1. Segments and Functions of the Screw:
The screw is generally divided into five segments: feeding segment, melting segment, mixing segment, venting segment, homogenizing segment. 1. Feeding segment:
This segment is responsible for conveying the material and preventing overflow. 2. Melting segment:
In this segment, the material is fully melted and homogenized through heat transfer and frictional shear. 3. Mixing segment:
The mixing segment further refines and homogenizes the size and distribution of the material components, creating an ideal structure with dispersion and distribution mixing functionality. 4. Venting segment:
This segment is used to exhaust impurities such as water vapor and low molecular weight substances. 5. Homogenizing (metering) segment: The homogenizing segment is responsible for conveying and pressurizing the material, increasing the density of the material at the extruder outlet to a certain extent, establishing a certain pressure, and achieving more thorough mixing to ultimately achieve a stable foundation. Detailed Photos
1. The screw should have the appropriate flight depth, pitch, and compression ratio to achieve the desired melting and mixing characteristics. Efficient melting and mixing help ensure uniformity and homogeneity of the melted material, which translates into improved product quality.
2. It is essential to control the residence time to avoid thermal degradation or over-processing of the material, which can negatively impact product properties. The screw and barrel configuration can be optimized to achieve the desired residence time and minimize any adverse effects.
3. The choice of screw design, such as the use of barrier screws or venting, can help optimize pressure distribution and control, leading to improved product quality. This ensures thorough mixing of components and prevents pressure variations that could result in uneven curing, voids, or surface defects in the extruded silicone products.
4. Material Compatibility:
The screw and barrel should be selected based on the specific material being extruded to ensure compatibility. The geometry, surface treatment, and material of construction should be chosen to minimize material degradation, shear heating, or excessive wear. Proper material compatibility helps maintain product quality and prolong the life of the screw and barrel.
Applications

General Plastics

ABS, PA,PC,PE,PET,PP,PS,EVA,PU,PVC,U-PVC etc.

PA + GF(Glass Fiber)

All kinds of Mixed Recycled Material (in Scrap or Granule), PVC + 30% CaCo3, etc.

Flame-resistant Reinforced Plastics

Modified Engineering Plastics

Food Processing: puffed, artificial protein, artificial rice, nutritional powder, pet food, aquatic feed, etc.

Characteristics
1. Wear Resistance
2. Strong Corrosion Resistance
3. High Cost Effectiveness

Company Profile
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.


FAQ

1.Q: How about our machinery's ?
A: The company is in strict accordance with CE and ISO9001 quality certification system. There are over 200 models of extruders and spare parts.
2. Q: What's the delivery time?
A: For regular size, The delivery time might be 2 weeks
For customized, normally within 20 days .
3. Q: How about the gearbox quality and price?
A: top quality in China with competitive price and global after-sale service
4. Q:what's the life time and guarantee buy from Arrow machinery ?
A: 3~5years life time for nitriding ones and bimetallic ones will be longer.