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C21DX-2 triangle inner and outer fruit tea bag packing machine with stainless steel frame and control panel
C21DX-2 triangle inner and outer fruit tea bag packing machine with stainless steel frame and control panel
Triangle tea bags with visible whole leaf produced on the C21DX-2 machine
Triangle tea bags with visible whole leaf produced on the C21DX-2 machine
Ultrasonic sealing head and film roll on the C21DX-2 pyramid tea bag machine
Ultrasonic sealing head and film roll on the C21DX-2 pyramid tea bag machine
Inner and outer tea bags being formed and sealed on the C21DX-2 machine
Inner and outer tea bags being formed and sealed on the C21DX-2 machine
Side view of the C21DX-2 machine showing the 4-head electronic weigher and film unwinding system
Side view of the C21DX-2 machine showing the 4-head electronic weigher and film unwinding system

Pyramid Tea Bag Packing Machines · Model C21DX-

C21DX-2 Triangle Inner and Outer Fruit Tea Bag Packing Machine

The C21DX-2 forms, fills and ultrasonically seals triangle-shaped inner and outer tea bags from a single roll of nylon, non-woven, PET or PLA film, running 30 to 50 bags per minute at 1 to 10 g per bag. It is built for tea producers and blenders who need to package whole leaf, flower, herbal and regional teas like Tieguanyin, Longjing and Dahongpao in a visible, sealed format that maintains freshness and brand integrity. Two ultrasonic sealing devices create a tight, narrow seam without heat or adhesive, reducing film waste and preserving delicate aromatics.

  • Handles whole leaf and coarse blends that jam machines designed for fine cut or fannings
  • Ultrasonic sealing avoids heat and adhesive so aromatics are not scorched at the seam
  • Electronic scale filling holds 0.1 g accuracy so bag weight stays consistent across batches
  • Narrow seal edge reduces film consumption compared to wide heat-sealed borders

Key Benefits

  • Handles whole leaf and coarse blends that jam machines designed for fine cut or fannings
  • Ultrasonic sealing avoids heat and adhesive so aromatics are not scorched at the seam
  • Electronic scale filling holds 0.1 g accuracy so bag weight stays consistent across batches
  • Narrow seal edge reduces film consumption compared to wide heat-sealed borders
  • One operator can run the line after training instead of a hand-filling team
  • Supports inner and outer bag configurations for dual-layer protection and premium presentation

Application Scenarios

  • Tea estates packaging single-origin whole leaf for retail sale under their own label
  • Herbal and health tea producers running short batches of many different blends
  • Contract packers serving multiple tea brands from one line with quick format changeover
  • Chinese tea producers packaging Tieguanyin, Longjing and Dahongpao in branded outer bags

Who It Is For

  • Tea blenders moving from outsourced packing to in-house inner and outer bagging
  • Producers whose leaf is too coarse for flat filter paper bags
  • Brands that need the leaf visible through a transparent biodegradable bag
  • Buyers replacing an ageing heat-seal machine that scorches nylon film

Problems It Solves

  • Coarse whole leaf bridges and jams in machines designed for cut and fibre grades
  • Heat sealing melts a wide edge into nylon film and wastes material on every bag
  • Hand filling gives inconsistent bag weight and cannot hold a 0.1 g target
  • Manual pyramid folding limits output far below a 30 to 50 bag per minute demand
  • Non-food-grade film risks failing customer and retailer safety audits

Technical Features

  • Ultrasonic sealing and cutting with two sealing devices for a tight narrow seam
  • Four-head electronic scale filling with +/-0.1 g accuracy across the 1 to 10 g range
  • Accepts nylon and non-woven filter film imported from Japan plus PET and PLA biodegradable material
  • Packing roll width selectable at 120, 140, 160, or 180 mm
  • Seal length selectable at 50, 60, 70, or 80 mm
  • Runs on single phase 220V 50Hz at 1.5 kW with air supply at 0.6 MPa or higher
  • Outer bag size range: length 90 to 120 mm, width 80 to 100 mm

Specifications

Machine modelC21DX-2
Machine typePyramid Tea Bag Packing Machine
Packing materialNylon, non-woven fabric, PET, PLA
Measuring method4 head electronic weigher (6 or 8 head available on request)
Filling range1-10 g/bag, accuracy +/-0.1 g/bag
Packing speed30-50 bags/min
Packing roll width120, 140, 160, 180 mm
Sealing length50, 60, 70, 80 mm
Sealing methodSealing and cutting by ultrasonic
Qty of sealing device2 sets
Air supply0.6 MPa
Motor power220V, 50Hz, 1.5 kW
Dimension3000 x 900 x 2300 mm (L x W x H)
Machine weight550 kg
Outer bag sizeLength 90-120 mm, Width 80-100 mm

Packing Materials It Runs

  • Nylon mesh film imported from Japan, non-toxic, heat resistant and food grade
  • Non-woven fabric filter film for opaque pyramid bags
  • PET film for high clarity pyramid bags
  • PLA corn fibre film for 100% biodegradable transparent bags

How the Machine Works

  1. 1Film unwind and triangle bag forming
  2. 2Electronic scale weighing and filling with four heads
  3. 3Ultrasonic sealing by two sealing devices
  4. 4Cutting and discharge of inner and outer bags

Quality Control Before Shipment

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Certifications

  • ISO
  • CE

Customization Options

  • Choice of 120, 140, 160, or 180 mm roll width to match your bag size
  • Seal length set at 50, 60, 70, or 80 mm
  • Nylon, non-woven, PET or PLA film supplied to suit your brand and compostability claim
  • 6 or 8 head electronic weigher available as an option for higher throughput
  • Air compressor supplied with the machine where site air is not available
  • Voltage and plug arranged for the destination market on request

How It Compares

Flat filter paper tea bag machineThe C21DX-2 handles coarse whole leaf and shows the blend through the film, while filter paper suits fine cut and fannings at lower film cost
Heat sealed pyramid machineUltrasonic sealing keeps the edge narrow and avoids scorching nylon, at the cost of an air supply requirement
Manual pyramid baggingThe C21DX-2 replaces a hand-filling team and holds bag weight consistent, but needs a fixed footprint of 3000 x 900 mm and an operator trained on changeover

Use Guide

  1. 1Connect a clean dry air supply at 0.6 MPa or higher and a single phase 220V 50Hz outlet
  2. 2Load the film roll matched to your chosen 120, 140, 160, or 180 mm width
  3. 3Set seal length to 50, 60, 70, or 80 mm for the bag size you are running
  4. 4Enter target fill weight between 1 and 10 g and calibrate the electronic scale with your own tea
  5. 5Run ten sample bags and check weight and seal before starting the batch
  6. 6Clean the filling hopper between blends to avoid carry-over of aroma

C21DX-2 Triangle Inner and Outer Fruit Tea Bag Packing Machine FAQ

What bag weight range can the C21DX-2 run?

1 to 10 g per bag with an accuracy of +/-0.1 g per bag, set on the electronic scale filler.

How fast does it run?

30 to 50 bags per minute depending on bag size, fill weight and how free-flowing your blend is.

Can it run biodegradable film?

Yes. It runs PLA corn fibre and 100% biodegradable transparent material as well as nylon, non-woven fabric and PET.

Do I need an air compressor?

The machine needs an air supply at 0.6 MPa or higher. If your site has no compressed air we can equip the machine with an air compressor.

What power supply does it need?

220V 50Hz single phase, 1.5 kW motor power. Tell us your destination voltage and we will arrange it before shipment.

How much floor space and lifting capacity do I need?

The machine measures 3000 x 900 x 2300 mm and weighs 550 kg, so plan the doorway height and forklift access accordingly.

Is the machine certified?

Sengong is certified to ISO and CE. Certificates are sent by email or WhatsApp on request.

Get A Quote For the C21DX-

Tell us your product, bag weight and hourly output. We confirm the film, the bag size and the total delivered price.