Inner & Outer Bag Tea Packaging Machines

Say Goodbye to Tedious Manual Bagging: Create an Ultra-Fast Packaging Experience for High-End Inner and Outer Bag Tea

“Lantu Pack offers high-performance inner & outer bag tea packaging machines designed for packaging loose leaf tea, herbal tea, and green tea into premium filter bags with protective outer envelopes.”

The Automatic Inner and Outer Bag Tea Packaging Machine (with Thread and Label Series) is an industrial-grade, high-efficiency automation assistant built specifically to solve premium tea packaging pain points, such as low manual bagging speed, material clamping in outer bag seals, inaccurate positioning between inner and outer bags, falling threads/labels, and floating tea dust.

LANTU Machinery introduces tailored, full-line automated inner and outer bag tea packaging solutions. Featuring precision mechanical linkage drives, high-precision electronic scale or volumetric cup dosing, ultrasonic or heat-sealing cold-cutting technology, and automatic thread-and-label mechanisms, the machine operates across six core stations (1. Precision Tea Dosing $\rightarrow$ 2. Inner Bag Forming & Thread/Label Attachment $\rightarrow$ 3. Inner Bag Sealing & Cutting $\rightarrow$ 4. Precision Manipulator Transfer $\rightarrow$ 5. Outer Bag Forming & Inner Bag Insertion $\rightarrow$ 6. Outer Bag Heat Sealing & Finished Output). It functions like an expert dedicated to tea packaging. Whether processing whole-leaf tea, tea bags, herbal tea, tea dust, or health teas, it realizes end-to-end integration: automatic dosing, inner bag wrapping, thread-and-label attachment, composite outer bag insertion, and clean sealing with zero weight error, zero sealing wrinkles, elegant finishing, and no manual contact required.

As a direct source packaging machinery manufacturer, LANTU Machinery makes this complex process—automatic tea dosing, filter paper inner bag forming, thread knotting/ultrasonic welding, label attachment, manipulator transfer, and laminated film outer bag sealing—as intuitive as using a smartphone. Operators simply adjust bag length and running parameters on the PLC touchscreen and load bulk tea into the hopper. The machine automatically manages dosing, inner/outer bag wrapping, and product output. Accommodating a wide range of inner and outer bag sizes, this machine drastically shortens packaging cycles while saving labor, time, and operating costs.

Choosing a reputable source manufacturer is crucial for your return on investment. LANTU Machinery’s mature manipulator transfer and ultrasonic sealing technologies deliver high reliability and material efficiency to keep your tea packaging line running without interruption.

Core Components & Three Key Systems (LANTU Precision Parts)

Our Inner and Outer Bag Tea Packaging Machine is built with industry-leading components to ensure high quality, zero defects, and extended machine lifespan.

1.Dosing, Inner Bag Forming & Thread/Label System

Precision Electronic Scale / Micro Volumetric Cup Dosing: Flexible configuration based on tea morphology (whole-leaf or dust) with millisecond response time. Dosing nozzles feature anti-crushing buffer channels that protect tea leaf integrity.

Ultrasonic / Heat-Sealing Inner Bag Former: Uses non-toxic, odorless tea filter paper or nylon mesh paired with ultrasonic seamless welding or heat sealing. Seals are firm and odorless, ensuring no bag breakage during brewing.

Automatic Thread Knotting / Label Attachment Unit: Precision manipulators perform automatic thread pulling, cutting, label positioning, and attachment to the inner bag top. Threads remain securely attached without pulling off.

2.Manipulator Transfer & Outer Bag Sealing System

Pneumatic / Servo Manipulator Smooth Transfer: A servo manipulator grips the wrapped inner bag and transfers it into the outer bag former, eliminating drop-jamming and thread-clamping issues common in gravity-drop systems.

Composite Outer Bag Forming & Anti-Clamping Seal: Outer bags use 3-side or 4-side seal composite films guided by photoelectric eye-mark tracking and PID temperature control to form airtight, moisture-proof, and oxygen-barrier seals.

Optical Positioning & No Tea No Bag Protection: Real-time sensors monitor tea dosing and inner bag presence. Operations pause automatically if material is missing, preventing film waste.

3.Intelligent Control & Safety Protection System

Siemens / Mitsubishi PLC Central Controller: Industrial-grade multi-core CPU provides centralized line control, stable operation, anti-interference capabilities, and multi-language support.

One-Touch Specification Change & Modular Design: Changing outer bag dimensions requires only minor parameter adjustments on the touchscreen or quick adjustments to the outer former, completed in minutes.

Fully Enclosed Safety Guarding: Thickened transparent safety doors stop operation instantly when opened, meeting food hygiene standards while protecting operator safety.

Technical Specifications

Note: Actual packaging speed depends on tea bulk density, flowability, dosing unit, and film material. Custom engineering options are available upon request.

Complete Inner and Outer Bag Tea Packaging Workflow

Station 1 (Tea Precision Dosing): Tea is weighed by electronic scales or volumetric cups and drops smoothly into the inner bag forming area.

Station 2 (Inner Bag Wrapping & Sealing): Filter paper or nylon mesh wraps around the tea charge from bottom to top, while ultrasonic or heat-sealing jaws form longitudinal and bottom seals.

Station 3 (Thread & Label Attachment): Automated mechanisms attach pre-cut cotton threads and paper labels securely to the top of the inner bag.

Station 4 (Manipulator Transfer): Servo manipulators grip the top of the tagged inner bag and transfer it smoothly into the outer bag former.

Station 5 (Outer Bag Forming & Insertion): Outer composite film forms into shape as the inner bag is inserted flat inside, keeping threads and labels neatly aligned without tangling.

Station 6 (Outer Bag Sealing & Product Output): PID temperature-controlled sealing jaws execute high-pressure outer bag sealing and cutting, delivering finished pouches via discharge conveyors.

Applicable Materials & Bag Formats

Engineered for maximum operational return, the LANTU Machinery Inner and Outer Bag Tea Packaging Machine offers broad material and bag versatility across multiple sectors:

1.Applicable Materials (Whole-Leaf Tea, Tea Dust & Herbal Blends)

Whole-Leaf & Specialty Teas: Green tea, black tea, Oolong tea, broken Pu’er, white tea, etc.

Herbal & Wellness Teas: Chamomile, rose tea, Goji berry tea, barley tea, cassia seed tea, etc.

Flavored & Tea Bag Blends: Flavored black tea, fruit tea, cold brew tea, traditional herbal tea formulations, etc.

2.Applicable Bag Formats

Inner & Outer Bag with Thread and Label: The classic pouch format for premium retail tea bags, featuring an inner pouch for brewing and an outer envelope for freshness.

Pyramid Inner Bag with Outer Envelope: Enhances whole-leaf tea expansion and visual appeal (requires optional pyramid forming unit).

Flat Inner & Outer Bag: High-efficiency pouch format for standard tea bags and daily drinking teas.

5 Reasons to Choose LANTU Machinery Tea Packaging Machines

When investing in automated packaging equipment, high precision, low maintenance, and long-term stability are core metrics. LANTU Machinery builds every machine for plug-and-play operation and extended service life.

Zero Thread-Clamping & Anti-Waste Protection: Precision manipulator transfer and optical sensors ensure smooth insertion without catching threads in outer bag seals.

Ultrasonic Seamless Seals without Bag Rupture: Advanced ultrasonic sealing produces clean, strong seals without damaging filter media, withstanding boiling water without splitting.

Pre-Factory Live-Material Testing: Every machine undergoes continuous high-, medium-, and low-speed testing using real tea materials and films to eliminate dosing and thread-attaching errors prior to shipment.

Voltage & Air Pressure Dual Protection: Built-in wide-range voltage regulation and pneumatic overload protection handle factory power and air fluctuations to ensure consistent seal quality.

Modular Quick-Change Design: Inner and outer bag size adjustments are simple, and contact parts disassemble easily for rapid cleaning and product changeovers.

Key Factors to Consider When Purchasing an Inner and Outer Bag Tea Packaging Machine

To select the ideal machine configuration for your production line, evaluate the following key purchasing metrics:

Tea Leaf Morphology & Dosing Method:

Whole-leaf tea / large herbal pieces: Choose electronic micro-weighing scales to prevent leaf breakage.

Fine particles / tea dust: Choose volumetric cups or auger dosing.

Inner Bag Material & Format: Heat-sealable filter paper, non-woven fabric, PLA corn fiber, or nylon mesh (determines whether heat or ultrasonic sealing is required).

Thread and Label Requirement: Confirm whether thread-and-label attachment is required or if standard inner/outer bagging is sufficient.

Target Output (bags/min): Match required output (e.g., 30–60 bags/min) to choose optimal manipulator speed and forming design.

Special Functional Requirements: Evaluate needs for outer bag nitrogen flushing, date coding (ribbon, laser, TTO), continuous bag cutting, or automatic cartoning line integration.

Frequently Asked Questions (FAQ)

Q1: Can whole-leaf tea and tea dust be packaged on the same machine?

A: Yes, but different dosing heads are recommended. For whole-leaf tea, we recommend a high-precision micro electronic scale to prevent leaf breakage; for tea dust, a volumetric cup system can be used. The forming and inner/outer transfer mechanisms remain universal.

Q2: Will the inner bag thread and label tangle or get caught in the outer bag seal during transfer?

A: No. We utilize a patented manipulator gripping and straightening mechanism. The manipulator firmly holds the top of the inner bag while straightening the thread and label, guiding it smoothly to the bottom of the outer bag before sealing.

Q3: Does the inner tea bag produce odor or unravel when brewed in boiling water?

A: Not at all. Our inner bag seals use food-grade ultrasonic seamless welding or non-toxic heat-seal filter paper without chemical adhesives. Seals withstand 100°C boiling water and comply with food contact safety standards.

Contact the Direct Source Manufacturer Today for a Custom Inner and Outer Bag Tea Packaging Solution!

LANTU Machinery — Dedicated to Packaging Equipment Manufacturing with Factory-Direct Quality Assurance.