Fully Automatic and Efficient Integrated Salt Packaging Line
Salt Packaging Process Line Solution
From process design to equipment selection and implementation, covering both pouch and bottle formats while meeting cleanliness, moisture protection, corrosion resistance, and efficiency requirements.
Overview
This solution focuses on stability, hygiene, traceability, and scalability, integrating upstream salt handling with downstream retail packaging. Typical flow: raw material buffering -> screening and decontamination -> dosing and weighing -> filling and forming -> sealing or bag stitching -> in-line checkweighing and metal detection -> coding and labeling -> case packing and palletizing -> warehousing and traceability.
Vertical form-fill-seal line for small retail pouches.
Standard Process and Controls
- Buffering and Conveying: Closed silos with anti-caking measures to minimize moisture ingress.
- Screening and Decontamination: Vibratory screening for uniform granularity, upstream magnets or metal frames if needed.
- Dosing and Weighing: Choose screw or gravity dosing by target format, prioritize repeatability.
- Filling and Forming: VFFS for small pouches, rotary filling for bottles or cans.
- Sealing or Stitching: Heat or ultrasonic sealing for pouches, automatic bag placing and stitching for heavy sacks.
- In-line QA: 100% checkweighing and metal detection with live rejection.
- Coding and Labeling: Lot and date coding, labels or thermal transfer as required.
- Case Packing and Palletizing: Automatic case erectors, packers, robotic palletizing, and stretch wrapping.
- Dust Control and Corrosion Resistance: Hoods at drop points, dust extraction, corrosion resistant materials.
- Traceability and Data: Batch barcodes connected to MES or WMS.
Typical Applications
- Small retail pouches from 100 g to 2 kg for consumer channels.
- Medium and heavy bags from 10 kg to 50 kg for food processing, industrial salt, and de-icing salt.
- Bottles and cans for table salt and blends with precise dosing control.
Key Equipment
Combine modules based on capacity targets and package formats.
Dosing and Filling
Multihead weighers or screw dosing, VFFS machines, open-mouth bagging, rotary bottle fillers.
Downstream and End of Line
Heat sealers or bag stitching, checkweighers, metal detectors, case formers and packers, robotic palletizers, and wrapping or bagging.
Open-mouth heavy bagging unit for 25 to 50 kg salt granules.
Line Layout and Expansion
Select straight or L-shaped layouts based on building height and logistics. Cluster dust points into a single ducting network, reserve buffer sections for sampling, and enable fast format changeovers to support multiple SKUs.
Quality and Compliance
- Materials: Use stainless contact parts with corrosion protection.
- Hygiene: Prevent cross-contamination at filling and loading points, clean and calibrate regularly.
- Traceability: Batch barcodes and online data retention for sampling and recall.
Weighing, conveying, and bag closing modules for salt packaging.
Implementation Notes
For new builds or upgrades, deploy in two phases. First, stabilize one format, validate OEE and dust metrics, then scale capacity and connect to MES to accelerate payback.
FAQ
How should we choose pouch type and sealing method?
For retail pouches, use three-side or pillow bags with heat sealing. For heavy sacks, use open-mouth bags with stitching and optional folded edges to prevent spillage.
How to reduce dust?
Add extraction hoods at drop points and stitching stations, use sealed hoppers with vibration damping, and keep moisture content stable to reduce dust and jams.
How to switch SKUs quickly?
Use quick-change forming sets, recipe memory, and adjustable guides to achieve minute-level changeovers with minimal downtime.
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