Engineered for global tea producers and contract packagers seeking zero-defect dual-bag automation. Integrated thread attachment, cotton tagging, inner filter paper pouch forming, and protective barrier outer envelope sealing.
Understanding how dual-bag packaging mechanics synchronize inner filter paper pouch formation, thread/tag fixation, volumetric dosing, and high-speed outer envelope sealing.
In modern tea processing, a Filter Tea Bag Envelope Packing Machine operates as a complex, multi-stage mechatronic assembly. The system converts raw filter media, cotton thread, paper tags, tea leaf substrates, and barrier film into individually wrapped, retail-ready tea sachets. Unlike basic single-bag vertical form fill seal (VFFS) systems, envelope packaging equipment executes two synchronized packaging cycles within a unified kinematic drive train: the inner infusion pouch assembly and the protective outer envelope enclosure.
Every automated tea bag envelope packing line engineered by Spartan Machine Co., Ltd. relies on four critical sub-assemblies working in microsecond alignment:
Global tea buyers frequently debate whether to specify mechanical thread knotting or ultrasonic tag welding. Mechanical knotting punctures non-heat-sealable filter paper and loops pure cotton thread through the perforation. While traditional, it introduces micro-holes that can bleed fine tea dust during shipping. Ultrasonic welding (operating at 28kHz to 40kHz) uses localized acoustic friction to instantly fuse food-grade heat-sealable paper or PLA mesh to the thread and tag. Spartan Machine Co., Ltd. equips high-speed lines with ultrasonic transducers that eliminate hot-melt adhesives while guaranteeing zero tea dust leakage.
Volatile aromatic compounds in green tea, herbal infusions, and specialty teas degrade rapidly upon exposure to atmospheric oxygen and ambient humidity. Our advanced envelope packing machines integrate multi-point Nitrogen Flushing (MAP) lances directly into the outer envelope forming tube. By flooding the envelope cavity with food-grade nitrogen gas prior to final transverse thermal sealing, residual oxygen levels inside the envelope are driven below 1.0%, extending product shelf life up to 24 months without chemical preservatives.
Explore Spartan Machine Co., Ltd.'s range of automatic tea bag packing solutions, engineered to meet diverse production capacities, bag geometry standards, and barrier material choices.
The industry workhorse for standard black and green tea fannings. Fully automated forming of inner filter bag with thread and tag, transferred directly into a 3-side seal outer protective envelope.
Designed for premium whole-leaf teas, herbal blends, and eco-conscious brands. Supports ultrasonic tag welding on PLA mesh mesh bags with optional nitrogen-flushed outer barrier envelopes.
Ideal for small-to-medium tea blenders, specialty herbal producers, and pilot R&D facilities. Features quick changeovers between different envelope dimensions and low film waste.
Compare core engineering metrics across Spartan Machine Co., Ltd.'s Filter Tea Bag Envelope Packing Machine routes:
| Technical Parameter | SPM-TB120 (Standard Line) | SPM-TB180-Green (Eco-PLA Line) | SPM-TB60 (Compact Line) |
|---|---|---|---|
| Target Dosing Substrates | CTC Black Tea, Green Tea Fannings | Whole Leaf, Herbal, Chamomile, Botanical | Fine Powder, Herbal Mix, Small Leaves |
| Inner Bag Dimensions | W: 50–70mm | L: 55–80mm | W: 60–80mm | L: 60–90mm | W: 45–65mm | L: 50–75mm |
| Outer Envelope Dimensions | W: 70–90mm | L: 80–120mm | W: 80–100mm | L: 90–130mm | W: 60–85mm | L: 70–110mm |
| Thread & Tag Attachment | Automatic Mechanical Knotting / Ultrasonic | Ultrasonic Cold Welding (Adhesive-free) | Mechanical Stapling or Thread Loop |
| Dosing Accuracy | ±0.15g (Volumetric Cup) | ±0.05g to ±0.1g (Electronic Weigher) | ±0.2g (Adjustable Cup) |
| Pneumatic Air Consumption | 0.6 MPa, 300 L/min | 0.6 MPa, 400 L/min | 0.6 MPa, 200 L/min |
| Electrical Power Supply | 380V / 220V 50Hz/60Hz, 3.5 kW | 380V / 220V 50Hz/60Hz, 4.8 kW | 220V 50Hz/60Hz, 2.2 kW |
| Total Machine Weight | Approx. 850 kg | Approx. 1,150 kg | Approx. 550 kg |
Macro shifts in consumer sustainability demands, international plastic bans, and smart factory automation are reshaping global machinery specs for tea packaging lines.
Single-use microplastics in beverage packaging are under severe legislative scrutiny across North America and the European Union (e.g., EU Single-Use Plastics Directive). Traditional filter papers sealed with polypropylene (PP) binder fibers are rapidly being phased out. Procurement directors are specifying equipment capable of handling zero-plastic materials—such as 100% bio-based Polylactic Acid (PLA) mesh derived from sugarcane/cornstarch, Abaca hemp pulp, and non-woven unbleached cellulose paper. Spartan Machine Co., Ltd. has redesigned sealing jaw geometry and thermal PID loops to accommodate the narrower seal temperature windows required by non-plastic filter papers without burning the web.
While traditional outer envelopes relied heavily on non-recyclable PET/AL/PE multi-layer foil laminates to block light and oxygen, the market is migrating toward Mono-PE or Mono-PP recyclable films, as well as high-barrier paper/PVOH structures. These sustainable films exhibit different tensile strength, elasticity, and heat-seal behavior. Machines engineered by Spartan Machine Co., Ltd. incorporate dual-servo film pulling belts and low-inertia dancer arms to prevent film stretching and maintain precise registration on recyclable outer barrier materials.
Automated packaging lines are transitioning from basic mechanical operation to sensor-rich smart manufacturing. Advanced tea bag envelope machines now feature integrated high-speed optical vision sensors. These camera systems instantly check for missing tags, broken cotton threads, misaligned envelope registration, and partial seals, automatically ejecting defective sachets at full line speed without stopping production. Real-time OEE telemetry connects seamlessly to plant MES via OPC-UA/EtherNet IP protocols.
Product flowability, bulk density variations, and particle size dictate dosing hopper selection. Spartan Machine Co., Ltd. tests every client substrate prior to machine shipment.
Rooted in rigorous engineering, transparent component selection, and uncompromising manufacturing standards. Built for continuous multi-shift industrial duty.
At Spartan Machine Co., Ltd., we eliminate white-label trading risks. Every Filter Tea Bag Envelope Packing Machine is designed, CNC-machined, assembled, and factory-tested under one roof in our Shantou industrial district facility.
To ensure long-term equipment reliability and hassle-free local maintenance anywhere in the world, Spartan Machine Co., Ltd. exclusively incorporates premier electrical, control, and pneumatic components from globally recognized brands:
SiemensColor Touch HMI Screen
SiemensS7 Controller PLC
SiemensVariable Frequency Drive
BeckerOil-less Vacuum Pumps
FestoPneumatic Actuators
Schneider ElectricSafety Low-Voltage Switchgear
Spartan Machine Co., Ltd.'s packaging technologies have supported high-volume production operations for market-leading food and beverage enterprises globally:
Direct answers to the most critical technical, operational, and maintenance questions raised by tea manufacturing plant managers and procurement engineers.
Tea dust migration poses a major risk to outer envelope thermal seals, potentially causing pinhole leaks and vacuum degradation. Spartan Machine Co., Ltd. solves tea dust interference at three distinct mechanical points:
1. Anti-Static Ionization: Ionizing bars mounted at the dosing funnel discharge neutralize static charges on tea fannings, preventing fine particles from clinging to filter paper seal boundaries.
2. Active Vacuum Dust Extraction: Integrated vacuum suction shrouds operate continuously around the inner pouch forming tube, removing airborne dust before inner pouch transfer.
3. Deep-Serrated Seal Jaw Geometry: Transverse outer envelope sealing jaws feature diamond-patterned serrations that displace trace surface dust during the thermal dwell cycle, ensuring air-tight seal integrity.
Mechanical knotting uses precision needle loopers to physically tie pure cotton thread through non-heat-sealable filter paper perforations. While traditional, it introduces micro-perforations through which ultra-fine tea fannings may leak.
Ultrasonic tag attachment uses high-frequency acoustic transducers (35kHz) to instantly fuse food-grade heat-sealable paper or PLA mesh to the cotton thread and tag. Ultrasonic bonding requires zero adhesives, creates zero perforations, eliminates metal staples, and operates reliably at speeds exceeding 120 bags per minute.
Yes, provided the machine is configured with modular, interchangeable dosing assemblies. Fine CTC black tea fannings achieve maximum speed and weight repeatability using telescoping volumetric cups. Coarse herbal cuts, flower petals, or fruit pieces require a multihead micro-electronic scale or linear vibratory feeder to prevent leaf shearing.
Spartan Machine Co., Ltd. designs quick-release mounting interfaces, allowing engineering operators to switch dosing heads within 30 to 45 minutes.
To run continuously at speeds above 100 bags/min without web jams or misregistration, outer envelope roll stock must comply with the following parameters:
• Structure: Multi-layer heat-sealable flexible laminates (e.g., Paper/PE, PET/AL/PE, PET/CPP, or Recyclable Mono-PE).
• Total Thickness: 60 to 90 microns (2.4 to 3.5 mil).
• Web Width Tolerance: ±0.5 mm with uniform tension winding across the core.
• Registration Marks: High-contrast black photo-eye eye-marks printed along the film edge with a minimum size of 5mm x 8mm.
Routine preventive maintenance ensures long machine service life and high Overall Equipment Effectiveness (OEE). Routine daily tasks include blowing down tea dust with clean compressed air and cleaning sealing jaws with brass brushes.
Wear items—such as rotary cutting knives, Teflon thermal jaw covers, pneumatic suction cups, and heating cartridges—typically operate for 2,000 to 4,000 operational hours before needing replacement. Spartan Machine Co., Ltd. supplies a recommended 2-year wearable spare parts kit with every machine delivery.
Spartan Machine Co., Ltd. provides a comprehensive 12-month warranty from the date of machine receipt at your facility. The warranty covers technical support and complimentary replacement parts for any mechanical or electrical defects.
Post-delivery technical support is provided via remote PLC diagnostic modules, high-definition video assistance, and detailed step-by-step engineering documentation. If on-site technician commissioning or staff training is required, Spartan Machine Co., Ltd. dispatches field engineers to your plant under agreed service terms.
Provide your target tea type, fill weight range, bag dimensions, and desired speed output. Our engineering team will deliver a customized line proposal and itemized quotation within 24 hours.
Direct Engineering Contact:
Email: [email protected]
Factory Address: Shengping Industrial District, Jinping District, Shantou, Guangdong, China
