Wholesale 18mm Stationery Utility Knife Manufacturers

What specific materials are used for cutting with the 18mm stationery utility knife?

Efficient cutting of paper materials
In the field of office and stationery, the most common use of 18mm stationery utility knives is to cut paper materials. Such knives are usually equipped with SK5 or high-carbon steel blades, which are sharp and wear-resistant. They can easily cut a variety of materials such as copy paper, cardboard, kraft paper, handmade paper, painted paper, etc., ensuring smooth cuts and no rough edges.
For scenes where a large number of paper documents are processed or handicrafts are made, the 18mm series of utility knives developed by Ningbo Chuangxin Institute have specially optimized the blade angle and slide rail damping to ensure that users can cut smoothly and safely at high speeds.
Fine cutting of plastic film and PVC sheet
With the rise of e-commerce and packaging industries, the demand for slitting of soft plastic materials (such as PE film, PVC film, shrink film, etc.) has grown rapidly. Traditional scissors often cannot provide sufficient precision and efficiency, and 18mm stationery utility knives show great advantages in this field.
Ningbo Chuangxin uses a slide rail system made of precision molds, with a multi-section breakpoint blade design, so that the blade is not easy to slip when cutting plastic film, and the blade can be flexibly broken and always remain sharp. For slightly harder plastic materials, such as PVC boards, EVA foam, acrylic films, etc. with a thickness of about 0.5mm, stable cutting can also be achieved without edge collapse.
High-load application of cardboard and corrugated paper
The 18mm wide blade has a larger contact surface and higher structural strength than the 9mm utility knife, which is particularly suitable for relatively strong packaging materials such as high-density cardboard and corrugated boxes. In the warehousing and logistics industry, it is perfect for daily operations such as unpacking, unpacking, and trimming.
In Ningbo Chuangxin's industrial-grade product line, many 18mm stationery utility knives adopt a non-slip grip design, and some models are also equipped with an automatic locking system to effectively prevent the blade from sliding out during high-intensity cutting to ensure user safety.
Compatible cutting of fabric and leather
Although traditional fabric cutting usually relies on scissors or professional fabric cutters, for informal occasions such as handmade DIY or light industrial workshops, 18mm stationery utility knives can easily handle thin canvas, Oxford cloth, leather edge materials, sponge lining and other materials.
Ningbo Chuangxin's engineering design team specifically investigated the sharpness and blade angle required for cutting fabric fibers, and achieved smooth cutting of flexible materials without drawing or residual edges without sacrificing blade durability.
Fast processing of wood thin boards and light foam boards
In decoration or model making, it often involves cutting of light wood boards (such as plywood, veneer boards) and foam boards (KT boards, foam boards). Compared with power tools, 18mm stationery utility knives provide a more flexible, convenient and low-cost processing method.
Ningbo Chuangxin uses high-hardness blades to process hot-pressed and glued wooden corners, combined with a solid blade shell structure, so that the knife does not shake or deflect during the cutting process, which is convenient for users to accurately control the cutting route. In response to the fracture and dust problems of foam materials, our company has also made professional adjustments to the sharp angle of the blade and the pressure of the blade.
Multi-purpose solutions for office and handicrafts
In addition to the common materials mentioned above, 18mm stationery utility knives are also widely used in the following fields:
Photography/advertising industry: cutting spray-painted canvas, photo paper, etc.;
Education industry: student arts and crafts production;
Home decoration DIY: cutting wallpaper, floor film, etc.;
Architectural model production: processing of corrugated plastic board, transparent sheet, etc.

Compared with other sizes (such as 9mm or 25mm), what are the advantages of 18mm stationery utility knife?

Size comparison: Why is 18mm just right?
9mm: suitable for delicate work, but with greater restrictions
The 9mm utility knife is widely used in delicate scenes such as office documents, paper cutting, and student DIY because of its lightness and easy control. Despite its small size, its blade width and strength are limited, and it is not competent for cutting thicker or harder materials, and it is easy to break or even hurt your hands.
25mm: High load capacity, but loss of flexibility
25mm knives have wider blades and sturdy blade bodies, and are often used in construction, industrial packaging and heavy material cutting. However, they are large in size, heavy in weight, inconvenient to carry, and not suitable for frequent or detailed operations. The operating flexibility is much lower than that of small-sized knives.
18mm: The golden balance of strength and flexibility
The 18mm stationery utility knife is exactly between 9mm and 25mm, combining the advantages of both:
It has stronger cutting strength than 9mm and can handle medium-hard materials such as thick cardboard, plastic board, PVC, foam, leather, etc.;
It is lighter and more flexible than 25mm, suitable for daily office, warehouse packaging, electrical maintenance, advertising installation, decoration accessories and other scenarios;
The blade length, structural strength and grip design are more balanced and versatile, which is an ideal transition solution for "daily use and professional tasks".
Comprehensive advantages from product performance to practical application
1. Wider cutting capabilities
The 18mm series of utility knives launched by Ningbo Chuangxin use high-strength SK5 or high-carbon steel blades. Through fine heat treatment and fine grinding processes, they ensure that they can still cut easily when facing thick cartons, foam boards, soft PVC, KT boards and other materials without slipping or tearing.
2. The structural design is more stable and safer
Compared with the common simple slide rails of 9mm, Ningbo Chuangxin's 18mm products use a reinforced push-blade slide rail system, a thickened knife clamp structure, and an automatic locking device. Even in long-term or high-load operations, they can keep the blade stable and improve safety.
3. Better ergonomics and good operating feel
The handle of 18mm stationery utility knives is generally designed to fit the hand better. Ningbo Chuangxin's products have been further upgraded in terms of shell materials, providing options such as non-slip rubber, comfortable touch, and thickened tails. They are suitable for long-term use and reduce fatigue, which is far better than the thin-handled 9mm knives.
4. Strong adaptability and easy maintenance
The 18mm blade is easy to replace and is compatible with most general blade heads. Some models of Ningbo Chuangxin are also equipped with spare blade bins and anti-accidental touch safety structures, which ensure sharpness while also taking into account the convenience of maintenance and use.