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What Is a Slitter Blade?
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What Is a Slitter Blade?

Views: 36     Author: Site Editor     Publish Time: 2023-10-08      Origin: Site

Slitter Blades are an indispensable part of modern industry. In this comprehensive article, we will learn more about cutting blades from multiple perspectives, including their pivotal role within slitting machines, the diverse types and distinctive characteristics of Slitter Blades, various slitting methods, and their broad applications, alongside insights into compatibility considerations.

The role of Slitter Blades in slitting machines

The slitting machine blade is one of the important parts of the slitting machine equipment. Improper selection of slitting machine blades can easily shorten the service life of the Slitter Blades, fail to meet the slitting index requirements, produce burrs on the slitting material, and produce a large amount of slitting dust.

slitter blade 1

Slitting Blades

The types and characteristics of Slitter Blades

Slitting machine blades come in diverse forms, with each type possessing unique characteristics tailored to specific cutting needs. Circular Slitter Blades and square blades are two common types of blades:

Circular Slitter Blades

Circular Slitter Blades, adopting a cylindrical or circular form, boast diameters ranging from millimeters to tens of centimeters. Their substantial diameter makes them apt for cutting thicker materials. When utilizing a circular knife, securing the cutting object is imperative to ensure precise alignment. The blade revolves along a defined cutting path, significantly reducing the likelihood of stray cuts.

slitter blade 2

Metal Circular Slitter Blade

Circular blades offer enhanced cutting efficiency, rapid cutting speeds, and heightened accuracy, making them well-suited for tough materials like rubber, foam, synthetic compounds, and plastics.

Square Slitter Blades

Square Slitter Blades, akin to precision razors, are firmly affixed to the slitting machine's knife holder. As materials flow through the machine, the blade descends, seamlessly slicing the material along its length, achieving precise slitting.

Within the realm of square Slitter Blades, we encounter two distinct categories: single-sided blades and double-sided blades. Single-sided blades, characterized by their rigidity, excel in slitting thicker and sturdier films. Their robustness prevents displacement during high-speed operations, ensuring product quality. For materials with thicknesses ranging from 70 to 130 micrometers, the single-sided blade is the recommended choice.

On the other hand, the double-sided blade offers a softer touch, making it ideal for slitting thinner materials. This option guarantees smooth film edges and extends the blade's lifespan, particularly beneficial when dealing with materials below 70 micrometers in thickness.

Square Slitter Blades find their niche in precision cutting of delicate materials like paper, film, leather, and fabric.

Methods of slitting

There are three common slitting process methods:

Trimming: This method involves amalgamating materials to create process trims. By trimming away the reserved process trims, products meeting specific requirements are produced. Trimming is predominantly used in processing composite films and similar materials.

Cutting and Rolling: In this technique, a high-speed circular knife is employed to cut an entire wide roll into multiple narrow rolls with precise specifications. This method finds extensive application in the adhesive products industry.

Rolling: Large-diameter materials are expertly sliced into multiple rolls, each with specified lengths and widths, aligning with winding requirements. Rolling is primarily employed in the film-based material and flexible packaging color printing industries.

Selecting the ideal slitting machine blade hinges on the type and thickness of the material slated for slitting. Different materials demand specific cutting methods to ensure optimal results.

Square Blade Slitting Techniques

Square blade slitting encompasses two primary methods: grooving slitting and suspended slitting.

Grooving Slitting: This technique involves the material passing over a grooved roller, with the blade descending into the groove to achieve longitudinal cutting. The material maintains a wrapping angle on the roller, preventing drift. Grooving slitting is favored for materials like cast PP films or those with narrow edges, enhancing slitting efficiency. However, it may be less convenient for knife setup.

Suspended Slitting: Here, the material moves between two rollers, and the blade descends to perform longitudinal cutting. While the material is in a somewhat unstable state, this method offers ease of knife adjustment and operation.

Circular Blade Slitting Methods

Circular blade slitting, a dominant approach for thick films, composite thick films, paper, and similar materials, can be executed in two key ways: upper and lower circular knife shearing, and circular knife extrusion slitting.

Upper and Lower Disc Blade Slitting: This technique, comprising tangential and non-tangential variations, is prevalent. Tangential slitting involves cutting in the tangent direction of the upper and lower disc knives, offering convenient knife setting. However, it's susceptible to material drift at the cutting point, affecting accuracy. Non-tangential slitting minimizes drift by creating a wrapping angle between the material and the lower disc knife, ensuring high cutting precision. Adjusting the knife, though, is less straightforward, requiring the removal of the entire shaft during lower disc knife installation.

Slitting Machine Blade

Slitting Machine Blade

Circular Blade Extrusion Slitting: This method, though less common, presents a unique setup with a bottom roller synchronized to the material's speed, forming a specific angle. It employs a pneumatic slitting knife for easy adjustment. Circular knife extrusion slitting is versatile, accommodating thin plastic films, thick paper, non-woven fabrics, and more, signifying a promising frontier in slitting machine techniques.

Slitter Blade Applications and Compatibility

Slitter Blades are widely used in a variety of different industries and in many different applications. Below we’ve listed some of the most common uses for Slitter Blades.

Precision in Paper

Paper processing embraces Slitter Blades for their unique ability to execute fine, high-precision cuts with unrivaled finesse. In this realm, we encounter two distinct champions – continuous-edge Slitter Blades, orchestrating graceful paper cuts, and their toothed-edge counterparts, lending their expertise to the creation of tear lines and intricate perforations.

Mastering Meats

The meat processing industry, where precision is paramount, welcomes the prowess of Slitter Blades. Not only do they excel at transforming meat into slender strips, but they also delicately score the likes of beef, poultry, and fish. Bespoke Slitter Blades often take center stage, custom-crafted to harmonize seamlessly with specialized cutting machinery.

Unraveling Foils and Films

Foil and film materials, demanding perfection in every cut, discover a trusted ally in Slitter Blades. With their razor-sharp edges, these blades carve through these materials with surgical precision, ensuring every incision meets the exacting standards of consistency.

Masters of Corrugation

In the realm of corrugated products like cardboard and fiberboard, where quality hinges on precise cuts, Slitter Blades reign supreme. Their impeccable craftsmanship is the linchpin in scenarios demanding precision, where corrugated materials must be deftly sectioned.

Textile Titans

Textiles and fabrics, notorious for subjecting blades to relentless wear and tear, bow to the durability of Slitter Blades. These blades maintain their razor-sharp edge even through the rigors of regular cutting, standing as resilient sentinels in textile workshops.

Crafting with Plastics and Synthetics

In the arena of plastic and synthetic materials, Slitter Blades prove their mettle once more. Their precision cuts, unwavering over extended operational cycles, render them the artisans' tool of choice for crafting intricate designs from these challenging substances.

In summary, whether it's paper processing, meat transformation, foil precision, corrugated materials, textiles, or crafting with plastics, slitting blades stand as indispensable assets in countless industries.

The world of Slitter Blades unfolds in two distinct forms, each tailored to a specific realm of cutting precision. Square blades reign supreme in delicately slicing through thin materials, while circular blades tackle tougher substances with finesse, embodying efficiency, speed, and precision in their cutting prowess.

About us

Nanjing Jingfeng Knife Manufacturing CO., Ltd. is a professional Circular Slitter Blade manufacturer with many years of experience and expertise. Our products have reliable quality and excellent performance and are widely used in various industries and fields.

As a professional manufacturer, we are committed to providing high-quality Circular Slitter Blade to meet our customers' needs. We have advanced production equipment and technology and use high-quality materials to manufacture products to ensure their durability and stability.

Our Circular Slitter Blade has excellent cutting performance and precision and can be used for cutting a variety of materials, such as paper, plastic, metal, etc. Whether for large-scale production or small batch production, our products are able to meet our customers' needs and provide efficient cutting solutions.

Nanjing Jingfeng Knife Manufacturing CO., Ltd. (2)

Nanjing Jingfeng Knife Manufacturing CO., Ltd.

Our team consists of experienced engineers and technicians who have deep professional knowledge and technical capabilities and are able to provide customers with personalized solutions and professional technical support. We are always guided by customer needs and strive to provide customers with the best products and services.

We focus on quality management and customer satisfaction, and ensure the continuous improvement of product quality and customer satisfaction through strict quality control and a complete after-sales service system. We have established long-term and stable cooperative relationships with domestic and foreign customers and won their trust and praise.

If you are looking for a reliable Circular Slitter Blade manufacturer, we will be your first choice. Please feel free to contact us, we will be happy to provide you with quality products and services.

Our company got high appreciation from our customers by high quality, good reputation and reasonable prices at home and abroad. Welcome to contact us and visit our factory.



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