You're running a paper cup or paper container production line — serving coffee chains, food packaging manufacturers, or disposable tableware producers. The printing on your cups needs to be sharp, consistent, and perfectly registered across every piece. Achieving that level of quality requires a flexo printing machine built for precision and reliability. The SHR-650/850 is a 4-color cup paper printing machine designed for exactly this purpose — running at 60m/min printing speed with 10-100m/min adjustable speed range, handling paper from 60-350gsm, and integrating anilox roller ink transfer, 360° registration, and IR drying into a single pass. This guide covers what makes this flexo press perform: the ink transfer system, registration and drying technologies, the integrated process flow, and what to look for when selecting a cup paper printer for your production line.

Printing Speed and Precision – What the SHR Series Delivers

The SHR series delivers a printing speed of 60m/min, with a maximum machine speed of 10-120m/min (varying according to different printing materials, ink, and operator familiarity). The printing speed is 10-100m/min, also varying based on material and ink characteristics. Registration precision is held to longitudinal ±0.15mm and horizontal ±0.15mm. This combination of speed and accuracy ensures that even high-volume runs maintain consistent print quality.

Printing Speed Range

The SHR series operates at 10-100m/min printing speed with a maximum machine speed of 10-120m/min. The speed varies according to the different printing material, ink, and operator familiarity, allowing you to adjust production rate to match material requirements and job complexity.

Registration Precision – Longitudinal and Horizontal

The machine delivers longitudinal ±0.15mm and horizontal ±0.15mm registering precision, ensuring consistent color-to-color alignment across the entire run. This precision is critical for multi-color printing — it ensures that each color layer aligns perfectly with the others, preventing misregistration that would ruin the finished product.

Anilox Roller Ink Transfer – The Technology That Delivers Consistent Color, Run After Run

The SHR series uses an anilox roller to spread ink. The anilox roller is a precision-machined ceramic or chrome-plated cylinder with thousands of tiny cells that pick up a precise, metered amount of ink and transfer it to the printing plate. This ensures consistent ink coverage across the entire print run — no streaks, no fading, no inconsistent color density.

The Advantage of Anilox Roller Ink Transfer

Unlike rubber roller systems that can apply inconsistent ink film thickness, the anilox roller delivers a precisely metered ink layer every time. This consistency is essential for maintaining brand colors across millions of cups.

Automatic Rubber Roller Disengagement

When the machine stops or runs at low speed, the rubber roller automatically breaks away. This prevents ink from drying on the roller, reducing cleanup time and minimizing waste during stops and startups.

360° Registration and IR Drying – Two Features That Keep Colors Aligned and Ink Cured

The SHR series incorporates two critical features that work together to ensure print quality: 360° registration and IR drying.

360° Registration for Precise Color Alignment

Each printing unit features 360° registration, allowing operators to fine-tune the position of each color relative to the others. This means you can adjust registration on the fly, reducing setup time and minimizing waste during job changeovers.

IR Drying for Instant Curing

Each printing unit is equipped with an IR dryer. Infrared drying cures the ink immediately after application, preventing smudging and allowing the printed paper to be rewound or processed immediately. This is essential for high-speed production where wet ink would otherwise cause set-off and damage.

From Unwind to Rewind – Printing, Corona Treatment, and Drying in a Single Pass

The SHR series completes the entire printing process in one continuous pass: unwinding, web guiding, corona discharging, printing, IR drying, and rewinding. This integrated process eliminates separate handling steps, reducing labor and improving efficiency.

Corona Treatment for Better Ink Adhesion

Corona treatment is applied to the paper surface before printing. This increases the surface energy of the paper, improving ink adhesion and ensuring that the printed image bonds properly to the substrate.

Unwinding and Rewinding Control

Unwinding and rewinding are controlled by magnetic power brake and clutch systems, with a max. unwinding/rewinding diameter of 1400mm. Precise tension control prevents web stretching and misregistration, maintaining print quality across the entire run.

Specifications That Define Performance and Capability

Specification SHR650-4 SHR850-4 Why It Matters
Printing speed 10-100m/min 10-100m/min Production throughput (varies by material, ink, operator)
Max. machine speed 10-120m/min 10-120m/min Maximum capability (varies by material, ink, operator)
Printing colors 4 4 Supports multi-color designs
Max. printing material width 660mm 860mm Determines maximum paper size
Max. printing width 650mm 850mm Actual printable area
Printing girth 180-420mm 180-420mm Repeat length flexibility
Registering precision (longitudinal) ±0.15mm ±0.15mm Color-to-color accuracy
Registering precision (horizontal) ±0.15mm ±0.15mm Color-to-color accuracy
Printing cylinder diameter 100-320mm 100-320mm Repeat length flexibility
Paper thickness 60-350gsm 60-350gsm Material range flexibility
Max. unwinding diameter 1400mm 1400mm Long runs between roll changes
Max. rewinding diameter 1400mm 1400mm Long runs between roll changes
Total power 10-120m/min 10-120m/min Energy requirements
Overall dimensions (L×W×H) 3500×1650×2200mm 3500×1850×2200mm Floor space requirement

What Printing Managers Look for in a Cup Paper Flexo Press

What is the maximum printing speed of the SHR series?
The printing speed is 10-100m/min, with a maximum machine speed of 10-120m/min. Speed varies according to different printing materials, ink, and operator familiarity.

What is the registration accuracy?
The machine delivers longitudinal ±0.15mm and horizontal ±0.15mm registering precision, ensuring consistent color-to-color alignment across the entire run.

What paper thickness can the machine handle?
The SHR series handles paper from 60-350gsm, covering most standard cup paper and paperboard applications.

What are the available widths?
The SHR-650 handles 650mm printing width (660mm max. printing material width), while the SHR-850 handles 850mm printing width (860mm max. printing material width).

What is the printing cylinder diameter range?
The printing cylinder diameter ranges from 100mm to 320mm, accommodating different repeat lengths.

Let's Match a Flexo Cup Paper Printer to Your Production Requirements

Selecting a cup paper flexo printing machine comes down to three factors: printing width (match your paper size), registration accuracy (match your quality standards), and speed (match your throughput requirements). Contact Changs for a customized quote → —their team can help you select the right SHR series configuration for your specific cup paper printing needs.

Changs has always been committed to providing market-leading machinery for printing technology in the field of packaging printing. The SHR-650/850 4-Color Cup Paper Printing Machine features anilox roller ink transfer, 360° registration per printing unit, IR drying, automatic rubber roller disengagement, and stepless frequency conversion control. It delivers 10-100m/min printing speed with 10-120m/min maximum machine speed, longitudinal ±0.15mm and horizontal ±0.15mm registering precision, and handles 60-350gsm paper with printing cylinder diameter of 100-320mm. Applications include paper cup, paper bowl, and disposable paper container printing. Changs provides comprehensive technical support, installation guidance, and after-sales service. Connect with Changs to discuss your width requirements, production volume targets, and material specifications.