Plastic Industry Slitting And Cutting Blades
1.Industry application of slitting blades
1)Packaging industry: Cutting blades are used for producing food packaging films, plastic bags, etc., requiring high cutting accuracy and no burrs.
2)Electronics industry: When cutting electronic materials such as insulating films and conductive films, wear-resistant blades should be used to reduce dust pollution.
3)Recycling field: The plastic film shredder blade can cut the waste film into small pieces, which is convenient for subsequent melting granulation or direct recycling.
4)Material type adaptation:
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Plastic film: |
Flat and round blade slitting machines are widely used for precise slitting of PE, PP, PVC and other films, ensuring that the width and edge flatness of packaging materials meet production requirements. |
|
Composite film and metal foil: |
Round blades (such as slitting machine round blades) are suitable for cutting aluminum foil, copper foil, and multi-layer composite films, reducing material deformation through high-speed rotation. |
|
High viscosity material: |
The pneumatic slitting knife can handle soft PVC, adhesive tape and other materials, and achieve stable cutting through air pressure regulation. |
5)Process requirement adaptation
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Thin walled material cutting: |
Long strip blades or elastic blades are used for cutting plastic sheets and films, with low cutting resistance and low energy consumption. |
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Hard plastic cutting: |
Alloy embedded blades are suitable for engineering plastics (such as ABS, PC) or materials containing fiberglass, improving wear resistance and extending lifespan. |
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Alien cutting: |
Irregular blades (such as wavy or trapezoidal) can be customized for cutting special products such as pipes and irregular parts. |
6)Typical Scenario
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Industrial waste treatment: |
The shredder blade is used to cut waste plastic products (such as plastic film and pipes) to improve recycling efficiency. |
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Precision component production: |
Combination blade (main blade+auxiliary blade) synchronously completes rough cutting and finishing of plastic parts, meeting high-precision requirements |
|
type |
design characteristics |
advantage |
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Square knife cutting |
The blade is fixed on the knife holder and can be vertically cut by lifting and lowering. It is suitable for general plastic films such as ABS and PE, and is recommended to use double-sided blades for cutting thicknesses below 70 μ m (to improve edge flatness) |
Suspended slitting operation is convenient and suitable for thin materials (such as 0.01-0.1mm aluminum foil) |
|
Round knife cutting |
Hard alloy (YG8-YG15) or high-speed steel (W6Mo5Cr4V2), with a wear resistance life 5 times that of ordinary steel, suitable for continuous slitting production lines (such as BOPP film, metallized film) |
Dynamically adjust the blade spacing (0.1-0.3mm) and optimize the cutting accuracy in conjunction with the sieve mesh frame |
|
PE film slitting |
The circular blade slitting machine cuts large rolls of PE film into packaging films with a width of 3-5mm, with smooth edges and no burrs |
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ABS electronic waste cutting: |
The combined blade synchronously completes crushing and cutting, with a particle accuracy of ± 0.2mm, and is directly used for injection molding raw materials. |
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PVC pipe cutting: |
Customized cutting of pipe waste with irregular blades, suitable for the production of recycled particles in the construction industry. |
By adapting the types and process parameters of slitting and cutting blades, the diverse processing needs of the plastic industry can be efficiently met.
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Type |
Material |
Applicable scenarios |
|
High speed steel cutting knife |
W6Mo5Cr4V2（HRC55-58） |
Intermittent cutting of bubble wrap and PE sheet |
|
Alloy tool steel blade |
Cr12MoV（HRC58-62） |
High load cutting of mixed plastics containing impurities |
|
Hard alloy coated knife |
Tungsten carbide matrix (YG series) |
Industrial grade continuous operation (such as PVC woven bags) |
Cutting scenario: For high-speed continuous cutting, circular blades are preferred; High viscosity materials are suitable for pneumatic slitting knives.
Cutting scene: Hard materials are selected with alloy edged blades; Thin walled materials are recommended with elongated blades.
Adjustable knife holder: supports vertical cutting position adjustment (such as bubble film cutting device), suitable for different size requirements.
Multi claw interlocking design: reduces material adhesion (such as nylon/PVC scraps) and improves cutting stability.
Regularly clean the surface residue of the blade to avoid material adhesion affecting cutting quality.
Check the wear of the blade, and replace the hard alloy blade locally to reduce costs.
When cutting high hardness materials, it is necessary to control the cutting pressure to prevent blade breakage.
Plastic slitting and cutting blades need to be selected comprehensively based on material characteristics (thickness, hardness), operating mode (intermittent/continuous), and cost budget:
Cutting scenario: For thin films, circular cutting is preferred (for hard alloy materials), while for thick plates, square cutting is preferred (for Cr12MoV alloy steel).
Cutting scenario: For high-precision requirements, an adjustable tool holder scheme is recommended, and for mixed materials, multi jaw staggered blades are recommended.
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Plastic Slitting And Cutting Blades FAQs
What are plastic slitting blades and where are they used in the plastic industry?
Plastic slitting blades are precision cutting tools designed to slice plastic films, sheets, and plates in industries such as packaging, electronics, and recycling. They ensure high cutting accuracy, burr-free edges, and uniform thickness of processed materials. These blades are essential for high-speed production lines, automated cutting systems, and industrial recycling processes, providing stable performance for both thin films and thick plastic plates.
How do plastic cutting blades function in the packaging industry?
In the packaging industry, plastic cutting blades are widely used to process PE/PP films, laminated films, and plastic bags. High-speed circular blades or alloy-edged blades ensure precise and clean cuts, minimize material deformation, and reduce burr formation. Proper blade selection improves production efficiency, reduces downtime, and maintains high-quality standards in food and consumer goods packaging.
Can PVC slitting knives handle high-viscosity or thick plastic materials?
Yes, PVC slitting knives are designed for hard, high-viscosity, or thick plastic sheets. Pneumatic slitting knives or alloy-edged circular blades are recommended for such materials, while Cr12MoV square blades are suitable for thick plates and multi-layer films. Using the correct blade type ensures smooth cutting, prevents material tearing, and extends blade service life.
How are plastic slitting blades applied in the electronics industry?
In electronics manufacturing, wear-resistant plastic cutting blades cut insulating films, conductive films, and flexible polymer sheets used in circuit boards and displays. These blades reduce dust generation, prevent contamination of sensitive electronic components, and maintain high precision cutting, which is critical for adhesive films and high-performance plastic laminates.
What are the advantages of high-speed plastic blades in plastic recycling processes?
High-speed plastic blades efficiently shred waste films, sheets, and composite materials into small, uniform pieces. This improves downstream processes such as melting, granulation, and extrusion, and enhances recycling efficiency and raw material utilization. High-speed operation also reduces energy consumption and minimizes material waste, making it ideal for large-scale industrial recycling plants.
How does adjustable knife holder technology improve plastic cutting blade performance?
Adjustable knife holders allow vertical and lateral positioning of plastic slitting blades, ensuring consistent cut width and thickness for various materials like bubble films, PVC sheets, and multi-layer plastics. This technology reduces material adhesion, cutting resistance, and production downtime, while improving cutting accuracy for high-precision packaging or electronic components.
Plastic Granulator Knives for Size Reduction Systems
Our plastic granulator knives are designed for demanding recycling and plastic reprocessing applications. Featuring wear-resistant carbide tips and advanced alloy compositions, these industrial-grade knives withstand the abrasive nature of filled, reinforced, and engineering-grade plastics. The precision-balanced cutting edges ensure consistent particle size output while reducing power consumption. As experienced granulator blade manufacturers, we provide knives that deliver extended service life and reliable performance in both central and beside-the-press granulation systems worldwide.
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Plastic Shredder BladePlastic crusher blades have become a key link in the plastic resource utilization industry chain by adapting to different equipment (such as single axis and double axis crushers) and scene requirements. Mainly used in the plastic recycling industry, agricultural environmental protection, industrial waste resource utilization, and multi industry collaborative applications. -
Plastic Granulator BladePlastic granulator blades can handle various materials such as general plastics, engineering plastics, high-temperature materials, and recycled materials. They are widely used in the packaging industry, electronic appliances, automotive parts, medical industry, and other industries. By selectively selecting blade types and process parameters, plastic granulator blades can efficiently adapt to different industries and material needs, achieving high-quality particle production. -
Meat ChopperThe meat chopper in the food industry is widely used in meat processing plants, restaurants and central kitchens, home and small commercial scenes, special food processing and other scenes. Through professional design and intelligent control, the processing efficiency is improved while food safety is guaranteed, covering the needs of the whole industry chain from industrial to home scenes. -
Scrap Steel Crusher BladeThe blade of the scrap steel crusher has the characteristics of high-strength material and wear resistance, clever structural design, corrosion resistance and thermal stability. Through advanced technologies such as high-strength crushing and material sorting, it has become the core tool for achieving a "crushing sorting regeneration" closed-loop in the metal recycling industry chain. It can process various forms of scrap steel such as automotive scrap, steel bar waste, and industrial metal waste. -
Wood Industry Saw Blade KnifeThe application of saw blades in the wood industry covers the entire process of wood processing, and its core function is to achieve efficient utilization of materials and improve the quality of finished products through precise cutting. Applied in various fields such as cutting and cutting, sheet metal processing and composite profile processing, fine trimming and forming processing, rough processing and efficient slitting of logs in furniture manufacturing. -
Guillotine Shear BladesThe blade of the hydraulic shearing machine is the core cutting component of the hydraulic shearing machine. Its function and working process: It consists of a moving upper blade and a fixed lower blade. The upper blade is driven by a hydraulic system to apply shear force to the metal sheet, while the lower blade provides support. The blade gap is adjusted reasonably, and the shear stress is used to break and separate the sheet according to the set size, thus achieving its cutting function. -
Hss Circular Saw BladesHigh speed steel circular saw blade (HSS circular saw blade) is an efficient tool specifically designed for metal cutting. When used in conjunction with a specialized metal circular saw machine, it can cover diverse processing needs from thin plates to thick materials by adjusting the tooth pitch and line speed. It has become the core tool for cutting, slotting, and other processes in metal processing, especially suitable for efficient production in fields such as automotive, aviation, and machinery manufacturing. -
Steel Mill SpacerIn the slitting process of metal thin plates such as stainless steel, aluminum plates, and copper plates, as well as in the slitting of cold-rolled steel plates, hot-rolled steel plates, and pickled plates, spacers and washers are used to control the spacing between slitting blades and adjust the horizontal gap between upper and lower blades to ensure the accuracy of slitting width and cutting stability. They are indispensable components in widely used production. Welcome to ask us related questions
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