Nearly 70% of Corrugated Waste is Due to Adhesion Failure: Here’s How to Fix It

Close-up view of corrugated board showing flute structure and adhesive bonding quality

In corrugated board production, adhesion-related defects account for nearly 70% of total waste, making bonding quality a critical factor in cost control and production efficiency. The bonding strength of corrugated board is influenced by four main factors:paper quality, adhesive performance, corrugating equipment, and production control including operator skill. These factors interact with each other and […]

Why Does Corrugating Roll Grease Turn Black? Key Causes Explained.

Black grease flowing from corrugating roll bearing due to high temperature and oxidation

During corrugated board production, some manufacturers may observe that the grease used for corrugating rolls gradually turns dark or black. This phenomenon is not unusual and is typically caused by a combination of operating conditions and lubricant performance. Understanding the root causes helps improve lubrication management and extend corrugating roll service life. High-Temperature Oxidation Corrugating […]

The Iran Print Pack Expo Successfully Concluded on December 26 in Tehran!

Aerial view of the Tehran Permanent Fairground, the venue of the Iran Print Pack Expo, showing the central fountain and surrounding exhibition halls

RMM showcased its high-performance corrugating rolls at this year’s exhibition. Leveraging its professional expertise and proven solutions in corrugating roll design, manufacturing, and application, RMM received strong interest and positive feedback from industry professionals throughout the four-day event. During the exhibition, the RMM booth attracted a large number of clients from across the country. RMM’s […]

Why Corrugated Board Becomes Too Soft: Six Key Factors Explained

Infographic showing six key factors that cause soft corrugated board, including temperature control, web tension, glue application, machine speed, roller gaps, and operating pressure.

Soft corrugated board directly affects stacking strength and transportation safety and is a common quality issue in production. In most cases, it results from combined imbalances across multiple process parameters rather than a single cause. 1. Temperature Control Flute formation depends on stable temperature conditions. Insufficient temperature leads to incomplete or irregular flute profiles, while […]

How Improper Corrugating Roll Parameters Affect Corrugated Board Quality

Close-up view of a corrugating roll showing precise flute profile and machined surface details.

In most corrugated board plants, corrugating rolls are inspected and adjusted on a regular basis. Key inspection parameters include flute pitch, flute height, roll crown, roll diameter, and roll meshing gap.Once any of these parameters are improperly set, corrugating performance will be affected, which can eventually lead to an overall decline in corrugated board quality. […]

Corrugating Rolls: Repair or Replace? How to Make a More Cost-Effective and Efficient Choice

Before and after comparison of a repaired corrugating roll, showing worn roll surface before repair and restored precision after grinding and recoating

In corrugated board production, corrugating rolls are the core components of the single facer. Their condition directly affects flute formation quality, production efficiency, and overall operating costs.When corrugating rolls show signs of wear or performance degradation, many box plants face a critical decision: Should the rolls be repaired, or should they be replaced with new […]

What are the components of corrugated cardboard?

Diagram of corrugated cardboard layers (liner paper, corrugated medium) by RMM , showing the structure of packaging material

Corrugated cardboard is one of the most widely used packaging materials, valued for its strength, light weight, and versatility. Its performance depends on a simple but well-engineered structure made up of the following key components. LinerboardThis is the outer layer of the board, typically made of smooth, high-strength kraft paper. It provides a printable surface […]

How Corrugating Rolls Influence Corrugated Board Quality

Corrugating rolls and finished corrugated board, demonstrating the key impact of corrugating rolls on board quality

In corrugated board production, the condition of the corrugating rolls directly determines the forming quality, strength performance, and production stability. The following four aspects explain how corrugating rolls impact board quality. 1. Flute Profile and Dimensional Accuracy Flute HeightFlute height affects board thickness and edge crush strength. Higher flute height usually leads to thicker board […]

Single facer: The “heart” of corrugated cardboard production lines, how does it drive the efficient operation of the packaging industry?

Single facer forming flutes with corrugating rolls in a corrugated board production line

In the modern packaging industry, the corrugated cardboard production line is like the blood vessels that supply life, and the single facer is the indispensable “heart” of this production line. Through precise operation, it transforms seemingly ordinary corrugated base paper into corrugated cardboard with structural strength, providing reliable protection for countless goods during transportation. The […]

Flute Crushing in Corrugated Board Production: Causes and Solutions

Illustration of flute crushing issues in corrugated board manufacturing

During the production of corrugated board, flute crushing is a common issue. Once the flutes are flattened, the board’s compression strength is significantly reduced, directly affecting the box’s stacking and load-bearing performance. The causes of flute crushing vary, and the main issues and solutions are summarized below. Main Causes & Solutions 1.Corrugating rolls are not […]

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