KL-300Y Liquid 3-Side Seal Bag VFFS Packaging Machine Guide

What Is the KL-300Y Liquid 3-Side Seal Bag VFFS Machine?

The KL-300Y Liquid 3-Side Seal Bag VFFS Packaging Machine is a vertical form-fill-seal machine designed specifically for liquid and semi-liquid materials. It forms 3-side seal bags directly from roll film, fills each bag with the measured liquid volume, seals and cuts the finished pack, and outputs it in a continuous automated cycle. The KL-300Y is suited for food, pharmaceutical, and chemical production environments where small-bag liquid packaging is required at consistent speed and quality.

Suitable Liquid Products

The KL-300Y is designed for a range of liquid and semi-liquid materials that require small-bag packaging:

• Seasoning sauces — soy sauce, oyster sauce, fish sauce, and similar thin-to-medium viscosity condiments.
• Condiments — vinegar, cooking wine, and other liquid flavor additives used in food service and retail packaging.
• Traditional Chinese medicine drinks — herbal liquid preparations and medicinal drinks packaged in single-dose sachets.
• Mouthwash — single-use mouthwash sachets for hospitality, travel, or retail distribution.
• Health drinks — functional beverages, oral liquid supplements, and similar health products in small-bag format.
• Other liquid or semi-liquid materials — any pourable product that requires hygienic, sealed small-bag packaging at production scale.

Complete Automatic Packaging Process

The KL-300Y integrates the full liquid packaging workflow into a single continuous machine:

• Product metering — each fill is measured to the target volume before dispensing.
• Liquid filling — the metered liquid is dispensed into the formed bag through a filling nozzle.
• Bag making — roll film is formed into a 3-side seal bag shape around the filling tube.
• Inflation or air exhaust — air is managed inside the bag before sealing to achieve the target pack appearance and shelf stability.
• Date printing — batch codes, production dates, or expiry information are printed on each pack during the cycle.
• Automatic counting — finished packs are counted automatically to support batch management and downstream grouping.

The machine can be paired with matched metering and conveying systems according to the specific properties of the liquid product, including viscosity, temperature sensitivity, and required fill accuracy.

PLC Servo Drive and Large Touchscreen Control

The KL-300Y uses a PLC servo drive system as its control core, coordinating film feeding, liquid filling, sealing, and cutting with precision timing. An extra-large display touchscreen serves as the main control center, giving operators clear visibility of machine status, process parameters, and alarm information. This combination improves control precision during production and makes daily operation more convenient — operators can manage key process settings directly through the touchscreen without requiring specialist technical knowledge for routine adjustments.

Synchronous Parameter Backup for Faster Product Changeover

For factories that package multiple liquid SKUs on the same machine, the KL-300Y supports synchronous backup of process parameters. The touchscreen can store packaging settings for different products, including fill volume, sealing temperature, bag dimensions, and speed. When switching from one product to another, operators can recall the stored parameters immediately without reconfiguring the machine from scratch. This reduces changeover time, minimizes the risk of setup errors, and helps maintain consistent packaging quality across different product runs.

Standard Function Configuration

The KL-300Y comes with a set of standard functions that support accurate, consistent liquid bag packaging:

• Color mark detection — a sensor reads registration marks on the film to ensure each bag is cut and sealed at the correct position, maintaining consistent bag appearance and print alignment.
• Standard ribbon coding — a built-in ribbon coder prints date, batch, or lot information directly onto each pack during the packaging cycle.
• Sponge air exhaust — a sponge-based exhaust mechanism removes excess air from the bag before sealing, supporting a cleaner seal and a more uniform finished pack appearance.

Stainless Steel Body for Durability

The KL-300Y is built with a stainless steel machine body throughout. Stainless steel supports long-term durability in production environments and maintains a clean machine appearance over time. For liquid packaging applications — where spills, condensation, and regular cleaning are part of daily operation — a stainless steel construction is practical for hygiene management and machine longevity. It also meets the material standards expected in food and pharmaceutical production facilities.

Safety Protection for Factory Operation

The KL-300Y is equipped with safety protection devices designed to meet enterprise safety management requirements. These protections help prevent operator injury and equipment damage during normal operation and maintenance. For factories running automated production lines over extended shifts, built-in safety features are an important part of responsible equipment selection and long-term operational reliability.

When Should Buyers Choose This Machine?

The KL-300Y is a practical choice in the following situations:

• When liquid products need to be packaged in small 3-side seal bags for retail, food service, or single-dose distribution.
• When product changeover happens frequently and fast parameter recall is needed to minimize downtime between runs.
• When factories need an integrated solution covering automatic metering, filling, date coding, and finished pack counting in one machine.
• When sealing appearance and production stability are important for product quality and customer acceptance.

Buyer Checklist Before Ordering

Before specifying the KL-300Y for your production line, confirm the following:

• Liquid viscosity — thin liquids, medium-viscosity sauces, and semi-liquid products each require different filling nozzle and pump configurations.
• Target filling volume — the fill volume range must fall within the machine's metering capacity.
• Bag size — confirm the target bag width and length for the finished 3-side seal pack.
• Film material — PE, OPP, laminated film, or other packaging film types compatible with liquid products.
• Need for color mark detection — required when using pre-printed film with registration marks.
• Need for date coding — confirm ribbon coding requirements for your product and market.
• Air exhaust or inflation requirement — specify whether sponge exhaust, gas flushing, or standard sealing is needed.
• Required output speed — confirm the target bags per minute to match your production volume.
• Factory layout and conveying connection — available floor space and how finished packs will be handled after discharge.

Interested in the KL-300Y for your liquid packaging line? Contact Keypack Intelligent to discuss whether the KL-300Y liquid VFFS machine fits your product and bag format. You can also explore the full 3-side seal bag packaging solutions range to compare formats and configurations.