Why Semi-Automatic Mixing System Project is not suitable for SPC Floor Production?


Why Semi-Automatic Mixing System Project is unsuitable?

Semi-Automatic Mixing System is very common in China and Asia factories, because of less investment in machine and installation, here is the standard processing :

Ton Bag Dump Station:

Raw Materials (PVC & CaCO3) feeding by the ton bag dump station, with the main materials has the automatic weighing system;

Semi-Weighing System:  

Additives(6 kinds of materials) feeding by Labor with the Semi-Weighing System;

Vacuum Conveying:

The Additives will have a Vacuum conveying feeding into the High Speed Mixer.

May cause problems By Semi-Automation System:


1.Environmentally Unfriendly for Workers

Semi-automatic system will generate many dusty during the bag open by labors, working in dust environment for a long time is harmful to workers’ health. The recruitment is difficult for materials dumping in European or U.S.

There will be 48Tons materials extruded by 1 Mixing system for 2x110mm Extrusion line output capacity, that means at least 3 tons additives should be weighed and moved by 150 times with 20kgs per batch.


2.Machine Stability for Production

The wrong formula will not only affect the quality of SPC floor, but also damage the machine. Huge physical consumption will lead to fatigue and slack of workers, especially for night shift workers. When the weighing and feeding times are wrong, the formula will be changed and the quality of finished products will be unqualified.


3.Defect Production Waste

That’s because in the process of feeding the raw materials, workers must first pour the raw materials into the barrel and then transport them to the machine. This process will cause waste of raw materials. What’s more, a large amount of dust diffuses in the air, which is not allowed by the environmental protection department, and there is a potential safety hazard of dust explosion.



Items Automatic Semi-automatic Manual
Quantity of workers

(Workers required per Shift)


Feeding Job & Control Room

1 Feeding(at least)

1 Weighing

1 Moving

1 Mixing

2 Feeding

1 Weighing

2~3 Moving

2 Mixing

Total needed in 24 hours

(Workers required by 3 shifts)

1×3=3 4×3=12 6×3=18
Workers Salary Amount 15000$/month 60000$/month 90000$/month
Workers Hiring Easy Difficult Tough
Waste rate of raw material 0.5% 1.5% 5%
Daily output 35T x 365 12~15 8~10
Machine Investment 300,000$ 120,000$ 85,000$
Silo Investment 60,000$/Silo x 3 60,000$/Silo x 2 None


Whats the Automatic Mixing System:

Automatic mixing system integrates automatic feeding system, central dust collecting system, recycling system, weighting system and conveying system.

Details of automatic floor mixing system :

  • Bag Dumping Station
  • The Conveying system from the bagging station to the silos
  • Feeding Station
  • Hoppers for additives ( Stabilizer,PE-wax, ACR,CPE,OPE, Lubricant, etc.)
  • Weighing Station
  • High Speed Mixer and Cooling Blender
  • Central dust collecting system and recycling system
  • Transferring System with the buffer tanks

Advantage of automatic floor mixing system:

1.Automatic feeding system –unmanned

SPC PVC automatic mixing solution is professionally designed for PVC or WPC plastic industry in mixing workplace.This set of confined system is used for automatically measuring,feeding,mixing,dosing to the extrusion of variety powders,particles and liquid.

2.Central dust collecting system-dust-free

The mixing workplace of PVC and WPC plastic industry is mass dust and workers are mobile.In the use of centralized feeding system we choose to connect the dust collection with the dust occurring outlet,so that collecting and recycling use of this part.Dust-free workshop is not only the modern industrial standard but also can save a lot of material and labor.

3.The central control system—intelligentize

Intelligent control system is to avoid mistakes and loss caused by manual operation,such as the wrong formula of feeding raw material lead to batches unqualified products and wast of secondary processing.The lack of automatic dosing function would result in short filling,which is the damage to screw and extruder.The key point is that lack of an automatic system to calculate materials based on production.

According to the material wast in enterprise each year,the amount of labor costs and other invisible costs is often higher than the investing amount of a certain small devices.


The finished materials conveying from the finished silo to the extrusion lines,the whole system controlled by the Materials management System.So, only one person is needed to control the materials management system.If you choose the automatic mixing system, there is no need to worry about the above problems.


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