Paper Bucket Machine - China Paper Bucket Machine Manufacturers Suppliers Factory

Product Overview

The Paper Bucket Machine is an automated vertical forming system engineered for high-volume production of large-capacity round paper containers. It integrates automatic paper feeding, multi-stage bottom punching, ultrasonic or hot-air sealing, knurling, and rim curling into a continuous workflow. Built for continuous industrial operation, this equipment processes heavy-duty PE-coated paperboard to deliver leak-proof packaging for food service and industrial supply chains.

Target Output: 40-80 pcs/min (variable by bucket diameter and GSM)
Container Capacity: 24 oz to 170 oz (interchangeable mold sets)
Raw Material: Single or double PE-coated paperboard (200-450 GSM)

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Technical Specifications

Specification Item	Industrial Standard Model (PBM-130)	Heavy-Duty Large Model (PBM-170)
Bucket Capacity Range	24 oz - 85 oz	60 oz - 170 oz
Rated Production Speed	60 - 80 pcs/min	40 - 60 pcs/min
Raw Material Range	220 - 380 GSM PE-coated paper	280 - 450 GSM PE-coated paper
Sealing Method	Swiss Leister Hot Air Heater / Ultrasonic	Swiss Leister Hot Air Heater
Bottom Paper Feeding	Automatic roll/die-cut sheet feed	Automatic die-cut sheet feed
Total Power Consumption	12 kW (3-Phase, 380V, 50Hz / Customized)	18 kW (3-Phase, 380V, 50Hz / Customized)
Machine Dimensions	3200 x 1400 x 1900 mm	3800 x 1600 x 2100 mm
Total Machine Weight	2,800 kg	4,200 kg

Key Features

Dual-Station Bottom Heating and Curling: Utilizes a mechanical cam-driven indexing mechanism combined with dual thermal heating stages to ensure complete fusion of the bottom disc and side wall, eliminating bottom leakage risks under high-fat or liquid loads.

Open-Type Cam Indexing Unit: Employs a high-precision Japanese precision indexer (Roller Gear Cam) running in an enclosed oil bath. This minimizes mechanical backlash and maintains positioning accuracy during high-speed operation.

PLC & Servo Control Architecture: Controlled via an industrial PLC and touch-screen HMI. Integrated photoelectric sensors monitor paper jam, empty bottom, and misfeed conditions, triggering automatic machine stoppage to prevent mold damage.

Modular Ultrasonic Sealing System: Integrates ultrasonic side-sealing generators for double-PE coated paperboard, avoiding glue usage and reducing setup time compared to traditional thermal-wire heating elements.

Applications

Commercial Food Service

Popcorn buckets for cinemas, fried chicken barrels for fast-food chains, and large salad/soup bowls.

Frozen & Dairy Sector

Bulk ice cream tubs and multi-liter dessert containers.

Industrial & Retail Packaging

Paper packaging buckets for pet food, laundry detergent powders, and hardware components.

Customization

Mold Interchangeability

Quick-change mold sets allow a single machine frame to produce varying bucket top diameters (from 110mm to 200mm) by swapping the forming horn, knurling ring, and bottom-sealing die.

Voltage & Electrical Compliance

Control panels configured to local electrical codes, including safety interlocks, UL-listed wiring components, and transformer integration for 220V, 440V, or 480V environments.

Integrated Peripheral Add-Ons

Optional configuration for inline inspection systems, automatic stacker-conveyors, and vision-based defect sorting.

Manufacturing & Quality Control

Machining Precision

Main frames and heavy-duty rotary tables are machined on CNC boring and milling centers in a single setup, holding structural parallelism tolerances within 0.02 mm to prevent premature bearing wear during continuous runs.

Component Traceability

Critical drive shafts utilize heat-treated 40Cr alloy steel; gears undergo high-frequency quenching to HRC 55-58. Pneumatic actuators and linear guides source directly from SMC and HIWIN.

Factory Testing Protocol

Every machine undergoes a mandatory 72-hour continuous dry-run test followed by an 8-hour load test using client-supplied raw material samples prior to crating. Dimensional tolerance and leakage testing reports are archived for each serial number.

Installation & After-Sales Support

Documentation Package: Supplied with comprehensive English manuals, including electrical schematics, pneumatic circuit diagrams, PLC ladder logic backup, and a detailed spare parts catalog with OEM part numbers.

Commissioning Support: Remote video engineering support provided standard. On-site installation, mechanical tuning, and operator training by senior technicians available upon request.

Spare Parts Inventory: Common wear items—such as heating elements, silicone rollers, proximity sensors, and springs—are stocked in central warehouses for immediate dispatch via DHL/FedEx.

Packaging & Delivery

Export-Grade Packaging

Secured on a fumigated solid-wood skid, wrapped in waterproof multi-layer VCI anti-rust film, and sealed inside a heavy-duty plywood crate compliant with ISPM 15 standards.

Shipping Logistics

Containerized loading (20GP or 40HQ) with internal steel-cable bracing to prevent shifting during ocean freight. Port of loading: Ningbo/Shanghai, China. Typical lead time: 35-45 days from deposit receipt.

FAQ

Q: What is the minimum paper GSM required to prevent bucket collapse?

A: For standard 85 oz popcorn buckets, a minimum of 320 GSM single-PE paperboard is required. For industrial or high-moisture applications, 380-420 GSM double-PE coated stock is recommended to maintain stacking strength and radial rigidity.

Q: Can this machine process water-based biodegradable coated paper?

A: Yes. The temperature controllers and hot-air sealing parameters are adjustable to accommodate aqueous dispersion-coated papers, provided the softening point of the eco-coating is verified during preliminary sample testing.

Q: What is the average tooling changeover time between different bucket sizes?

A: With a trained two-person maintenance crew, changing the forming mold, bottom plate feed track, and knurling die takes approximately 90 to 120 minutes.

Q: How is the bottom leakage issue eliminated during high-speed runs?

A: Leakage is prevented through three combined parameters: precise mechanical pressure from the bottom-knurling cam, accurate pre-heating of the bottom rim, and consistent sealing temperature control managed via PID feedback loops tied to solid-state relays.

Request a Quote

To receive a formal quotation tailored to your production requirements, please provide the following parameters:
Target Container Specifications: Top diameter, bottom diameter, height, and capacity (oz/liters).
Paper Specification: Grammage (GSM), PE single/double coating, or biodegradable coating type.
Target Production Volume: Expected output per shift or per month.
Destination Port: For accurate CIF freight estimation or FOB pricing.
[Button: Submit RFQ / Contact Engineering Team]

As one of the leading paper bucket machine manufacturers and suppliers in China, we warmly welcome you to buy bulk high quality paper bucket machine in stock here and get free sample from our factory. All customized machines are with high quality and competitive price.

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