KWLE

INDUSTRIES & APPLICATIONS

Industries & Applications

KWLE applies practical bagging and material-handling experience across six core application groups: sugar, dairy powders, citric acid, starch, food and pharmaceutical ingredients, and animal feed and premix. Each material requires an appropriate approach to flow, dust control, weighing, filling, bag closing, and downstream automation. Our engineering team matches these requirements to a reliable bagging line configuration for the specific product and project.

Application Materials

01   Sugar

Sugar Packaging Solutions

Granulated sugar

Granulated sugar is commonly packed in open-mouth bags. KWLE configures sugar bagging lines around the material, bag format, closing method, and downstream handling requirements.

Material Characteristics

  • Free-flowing granular material
  • Commonly suited to gravity feeding
  • Commonly packed in open-mouth bags

Packaging Considerations

  • Stable weighing, fast bag handling, clean bag transfer, and reliable folded-edge sewing help maintain throughput and consistent bag quality.
  • Final capacity depends on sugar grade, bag type, weighing configuration, and downstream equipment capacity.
  • Bag quality and closing method affect line stability. Palletizing and pallet load covering can be integrated according to project requirements.
Typical sugar packaging line with KAP bagging, sealing and robotic palletizing

① Bagging Machine② Bag Closing System③ Palletizing System

Packaging Solutions

Automatic open-mouth bagging machines

KAP-1080 →KAP-1120 →

Downstream systems

Robotic or conventional palletizing, with stretch wrapping or stretch hooding if required.

02   Dairy Powders

Dairy Powder Packaging Solutions

Whole milk powder

Milk powder and related dairy powders require controlled filling to manage powder movement, dust, and entrained air. KWLE configures each line around the actual dairy powder, target bag weight, bag specification, and required output.

Material Characteristics

  • Fine powder with low bulk density
  • Can entrain significant air during filling
  • Can generate dust during filling

Packaging Considerations

  • Controlled powder feeding, gross weighing, and low-drop bottom-up filling help control powder flow and improve filling stability.
  • Product deaeration may be required to improve finished bag compactness and stability. Nitrogen flushing can be integrated according to the product and packaging specification.
  • Heat sealing is the standard closing method. Final capacity depends on powder characteristics, target weight, deaeration, nitrogen flushing, and downstream handling.
Typical dairy powder packaging line with KBF bagging, sealing and robotic palletizing

① Bagging Machine② Bag Closing System③ Palletizing System

Packaging Solutions

Primary bagging solution

Controlled bottom-up powder filling with gross weighing and product deaeration if required.

KBF Series →

Closing and downstream systems

Nitrogen flushing and heat sealing, with check weighing, metal detection, conveying, palletizing, and pallet load covering if required.

03   Citric Acid

Citric Acid Packaging Solutions

Anhydrous citric acid

Citric acid may be crystalline granules or a granular and fine-powder blend. KWLE configures its packaging route around the grade, particle form, bag type, target weight, closing method, and downstream requirements.

Material Characteristics

  • Crystalline granular or granular/fine-powder blend
  • Hygroscopic and mildly corrosive
  • Can generate dust and trap air at the bag mouth

Packaging Considerations

  • Material flowability, dust level, and moisture sensitivity should be evaluated before confirming the feeding and filling route.
  • Internal product deaeration and bag-mouth air release support dense downstream palletizing. Powder must be removed from the inner bag mouth for reliable heat sealing.
  • Final capacity depends on citric acid grade, particle form, bag type, target weight, and downstream equipment capacity.
Typical citric acid packaging line with bagging, sealing and robotic palletizing

① Bagging Machine② Bag Closing System③ Palletizing System

Packaging Solutions

Automatic open-mouth bagging machine

Internal product deaeration and bag-mouth air release.

KAP-1040 →

Downstream systems

Robotic or conventional palletizing, with stretch wrapping or stretch hooding if required.

04   Starch

Starch Packaging Solutions

Corn starch

Starch includes powder products with differing bulk densities, flow characteristics, air levels, capacities, and packaging requirements. KWLE selects the packaging route for the specific starch grade and project rather than applying one standard configuration.

Material Characteristics

  • Powder products with differing bulk densities and flow characteristics
  • Entrained air can affect filling behavior and finished bag shape
  • Packaging requirements vary significantly by starch grade

Packaging Considerations

  • Net-weighing and gross-weighing systems are both used. Feeding and filling are selected according to starch properties and required capacity.
  • Product deaeration may be required depending on air content. The configuration also considers bag specification, product value, and downstream requirements.
  • Bag closing may use folded-edge sewing, heat sealing, or another suitable method according to bag construction and project requirements.
Typical starch packaging line with bagging, sealing, conveying and robotic palletizing

① Bagging Machine② Bag Closing System③ Palletizing System

Packaging Solutions

Bagging systems

KAP-type net-weighing or KBF-type gross-weighing configurations, with product deaeration where required.

KAP Series →KBF Series →

Closing and downstream systems

Suitable bag closing, check weighing, metal detection, conveying, palletizing, and pallet load covering as required.

05   Food & Pharmaceutical Ingredients

Food & Pharmaceutical Ingredient Packaging Solutions

Gelatin powder

Food and pharmaceutical ingredients and excipients are often fine powders that require controlled filling for stable operation, reduced dust, and a consistent finished bag. The process is configured for the specific material and production requirements.

Material Characteristics

  • Often fine powders with relatively low bulk density
  • May contain significant entrained air and generate dust
  • Flow behavior can vary substantially between ingredients and formulations

Packaging Considerations

  • Controlled powder feeding, gross weighing, and low-drop bottom-up filling provide better control of fine powders during filling.
  • Product deaeration may be required for highly aerated powders. Filling parameters are configured according to actual powder characteristics.
  • Bag closing and downstream equipment depend on material behavior, required capacity, bag construction, and project requirements.
Typical food and pharmaceutical ingredients packaging line with powder bagging, conveying and robotic palletizing

① Bagging Machine② Bag Closing System③ Palletizing System

Packaging Solutions

Primary bagging solution

Controlled bottom-up powder filling with gross weighing and product deaeration if required.

KBF Series →

Closing and downstream systems

Heat sealing or another suitable closing method, with check weighing, metal detection, conveying, palletizing, and pallet load covering if required.

06   Animal Feed & Premix

Animal Feed & Premix Packaging Solutions

Swine feed premix

Animal feed and premix products range from pellets and free-flowing granules to fine powders and powder-rich blends. KWLE matches feeding, weighing, filling, and closing equipment to the actual product rather than the category alone.

Material Characteristics

  • Includes pellets, granules, fine powders, and blended products
  • Bulk density, flowability, and dust level can vary considerably
  • Fine or highly aerated premixes may require controlled low-drop filling

Packaging Considerations

  • Most feed applications use net weighing and a feeding system selected for the material. Fine or highly aerated premixes may require gross weighing and bottom-up filling.
  • Bag type and closing method vary substantially; sewing, folded-edge sewing, heat sealing, or another suitable method may be used.
  • Final selection depends on material characteristics, capacity, bag specification, and downstream requirements.
Typical animal feed and premix packaging line with bagging, conveying and robotic palletizing

① Bagging Machine② Bag Closing System③ Palletizing System

Packaging Solutions

Primary bagging solutions

KAP Series for most pellets, granular feed, and suitable blends; KBF Series for selected fine or aerated powders.

KAP Series →KBF Series →

Closing and downstream systems

Suitable bag closing, check weighing, metal detection, conveying, palletizing, and pallet load covering as required.