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Engineering Plastics

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Engineering Plastics

Engineering plastics are an essential material in the manufacturing process for variety of products, from automotive machinery to household appliances, sports and leisure equipment.

A wide range of processes is involved, including the coloring and synthesis of base polymers, mixing inorganic and organic fillers and reinforcements, as well as conveying pellets. We offer batch mixers for weight gain or weight loss, raw material storage bins for keeping supplies handy while processing continues, refill valves so materials don't have to be constantly replaced on-site (thus saving time), aggregate bins that collect waste after mixtures are processed into smaller pieces usable by other machines downstream in the manufacturing process.

Our team's expertise includes material handling, raw material formulation metering and feeding processes. Our proven solutions are custom-made to meet the specific needs of our customers, resulting in increased efficiency, decreased costs, and consistent product quality.


Engineering Plastics Typical Application:

- PP filled, reinforced, flame retardant

- PA filled, reinforced, flame retardant

- ABS/AS reinforced, flame retardant

- PC/ABS alloy flame retardant enhancement

- PEEK high temperature polymer processing

- PET bottle or PA carpet fiber waste recycling


Measurement plan

  • PP/PA filling enhancement
  • PC/ABS flame retardant filling reinforcement

1. Batch mixer

2. Feeding bin

3. Feed valve

4. Feeding tube

5. Loss-in-weight feeder

6. Manual bag drop station

7. Vacuum feeder

8. Ton bag unloading station

9. Vacuum filter

10. Vacuum fan

11. Twin screw extruder

The filling enhancement modification process is generally a conventional application. Different materials are fed separately using a loss-in-weight feeder and added to the extruder, where the plastic is mixed to produce the desired modified product. The matrix resins commonly used in this process are PE, PP and PA, PET. Accurate loss-in-weight feeders ensure acceptable final product quality.


Typical raw material composition

- Resin: particles, bulk density 0.5-0.7Kg/L; good fluidity

- Filling: powder, bulk density 0.3-0.4Kg/L; poor fluidity

- Glass fiber: fiber, bulk density 0.8-0.85Kg/L; general fluidity

- Flame retardant: powder, bulk density 0.3-0.4Kg/L; poor fluidity

- Auxiliary: powder, bulk density 0.3-0.4Kg/L; general fluidity


Process characteristics

1. All granular raw materials in the formula are pre-mixed by the weight-increasing batch mixer and then enter the loss-in-weight feeder, reducing the number of loss-in-weight feeders used and equipment investment costs.

2. The weight-increasing batch mixer adopts the mixing principle of small batches and multiple batches, which improves the measurement and mixing accuracy and reduces the waste of premixed materials.

3. The additives are optimized from the traditional mass pre-mixing process with resin or fillers to independent small-batch pre-mixing and then enter the additive loss-in-weight feeder, which reduces the labor intensity of pre-mixing workers and improves the addition of additives in the formula. feeding accuracy

4. Due to the rational carding of the materials in the formula: granules, filling powder, reinforced staple fibers, and auxiliary mixtures, the accuracy, stability, and automation of the formula metering scheme are improved, and environmental pollution is also reduced.


Common equipment composition

- Weight gain batch mixer

- refill bin

- Refill valve

- Loss-in-weight feeder

- Aggregate silo

- Twin screw extruder

The advantages of Sonner weight-increasing batch mixer and loss-in-weight feeder:

-Characteristics of weight gain batch mixer: small batch, multiple batches, measurement accuracy, high mixing accuracy

-Features of the additive loss-in-weight feeder: small feeding volume and stable feeding accuracy can also be guaranteed by loose tolerance

-Flame-retardant or filling powder loss-in-weight feeder Features: Excellent anti-bridging performance, our flow control is more precise in the face of difficult-to-feed mineral powder

-Spun fiber loss-in-weight feeder: It is not easy to cause short fiber bridging during the feeding process, and the operation is reliable and stable

Tool-less quick release design makes cleaning and replacement easy

1. Feeding bin

2. Feed valve

3. Feeding tube

4. Loss-in-weight feeder

5. Ton bag unloading station

6. Liquid weighing scales

7. Twin screw extruder

Glass fiber: fibrous, bulk density 0.8-0.85Kg/L; fluidity is generally in the process of PC/ABS, all toners, auxiliaries, and basic resin raw materials are mixed in a mixer in advance. It is then added to a twin screw extruder or internal mixer for processing, usually using a volumetric feeder.


Typical raw material composition

Resin: particles, bulk density 0.5-0.7Kg/L; good fluidity

Resin: powder, bulk density 0.5-0.7Kg/L; good fluidity

Flame retardant: liquid, density 0.85-0.9Kg/L; general fluidity

Talc: powder, bulk density 0.3-0.4Kg/L; poor fluidity


Glass fiber: fibrous, bulk density 0.8-0.85Kg/L; general fluidity

Auxiliary: mixing of granules and powder, bulk density 0.3-0.4Kg/L; general fluidity

In the process of PC/ABS, all toners, additives and base resin raw materials are mixed in the mixer in advance. It is then added to a twin screw extruder or internal mixer for processing, usually using a volumetric feeder.


Typical raw material composition

Resin: particles, bulk density 0.5-0.7Kg/L; good fluidity

Resin: powder, bulk density 0.5-0.7Kg/L; good fluidity

Flame retardant: liquid, density 0.85-0.9Kg/L; general fluidity

Talc: powder, bulk density 0.3-0.4Kg/L; poor fluidity

Auxiliary: mixing of granules and powder, bulk density 0.3-0.4Kg/L; general fluidity

Advantages of Loosenite Loss-in-Weight Feeders:

-Characteristics of weight gain batch mixer: small batch, multiple batches, measurement accuracy, high mixing accuracy

-Features of the additive loss-in-weight feeder: small feeding volume and stable feeding accuracy can also be guaranteed by loose tolerance

-Fire-retardant or filling powder loss-in-weight feeder Features: Excellent anti-bridging performance, our flow control is more precise in the face of difficult-to-feed mineral powder

-Spun fiber loss-in-weight feeder: It is not easy to cause short fiber bridging during the feeding process, and the operation is reliable and stable

-Toolless quick release design makes cleaning and replacement easy

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Sonner Equipment Consultant

Hello! I am Miss Sun. If you need to consult the equipment model or installation and debugging problems, you can add my enterprise wechat, and we will make the measurement process scheme suitable for your enterprise!

Pay attention to the official account, learn about the latest product developments, and more video tutorials!

Miss Sun
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