paper converting machine banner

Hyraulic Shaftless Unwinder Stand

A hydraulic shaftless unwinder is a type of unwinding system used in slitter rewinder machines to support and unwind heavy jumbo rolls of materials, such as paper, film, foil, and textile.

The system consists of a hydraulic power unit, a support structure, and a set of rollers to hold and guide the jumbo roll.

  • Max weight jumbo roll:1000.00kgs
  • Lifting : remote control
  • Chunk size: 3-inch and 6-inch
shaftless unwinder stand

Leading China Paper Converter Equipment

Paper converter equipment, also known as a slitter rewinder, is a machine that is designed to convert large rolls of paper or other materials into smaller rolls. The process involves cutting the material into the desired size and then rewinding it onto a new core.

Slitter rewinders are commonly used in industries such as packaging, printing, and converting. They can handle a wide range of materials, including thermal paper, kraft paper,plastic films, and metal foils. The machine can be configured to cut the material to a specific width, length, or shape, depending on the application.

Jota Machinery is a company with over 10 years of experience in the paper converter equipment industry. Our slitting machines are known for the high quality and reliability.

If you are interested in learning more about their equipment, you can contact us for more information.

water activated tape slitting machine

Fiberglass reinforced thermoplastic composite uni-directional tape is a high-performance material made by combining thermoplastic resins with fiberglass reinforcement in a unidirectional pattern.

Uni-directional prepreg tape is known for its exceptional strength, stiffness, and durability, making it ideal for use in a wide range of applications, including aerospace, automotive, and sporting goods.

  • Works for CFRT Thermoplastic Uni-directional Prepreg Tape and Other Material
  • Unique Shaftless Design
  • Max Unwinding Diameter is 1200mm
  • Equiped Automatic Unloading Device
JT-SLT-1300C paper cup bottom slitting machine
High Speed Paper Slitting Machine
JT-SLT-1400C WAT Tape Slitting Machine
Water Activated Tape / WAT Tape Printing Slitting Machine
JT-SLT-1600C Kraft Paper Slitting Machine
Kraft Paper Slitting Machine
Paper/Plastic Film Slitting Rewinding Machine
fully automatic themrmal paper slitting machine 370
Fully Automatic Thermal Paper Slitting Machine
thermal paper printing slitting machine
Thermal Paper Printing Slitting Machine
surface slitting rewinding machine 370
Narrow Width Surface Slitting Rewinding Machine
JT-SLT-900A 370
Max 300m/min Rewinding Speed Thermal Paper Slitting Machine
JT-SLT-900C 370
High Speed semi-automatic thermal paper slitting machine

Special Design (4)

Rewinding Effect (4)

  • kraft paper rewinding effect

    Kraft paper rolls are a popular type of packaging material used in various industries for their strength, durability, and versatility.

    Kraft paper rolls come in various thicknesses, widths, and lengths, and can be used for a wide range of packaging and wrapping applications.

    They are commonly used for shipping, packing, and protecting products, as well as for wrapping gifts, creating artwork, and crafting.

  • carbon epoxy tape rewinding 370

    Carbon epoxy prepreg uni-directional tape is a high-performance composite material made of carbon fiber and epoxy resin.

    The carbon fibers are arranged in a single direction to provide superior strength and stiffness in that direction.

    This material is commonly used in aerospace, automotive, and sporting goods industries where high strength and light weight are critical design requirements.

  • self adhesive tape 370

    Self-adhesive label rolls are a popular type of labeling solution used in various industries for their convenience and versatility.

    These label rolls are made of a pressure-sensitive adhesive material that allows them to stick to almost any surface.

    They come in various sizes, shapes, and materials, and can be custom-printed to meet the specific labeling needs of businesses.

  • WAT Tape Rewinding 370

    Water activated paper tape is an eco-friendly and sustainable alternative to traditional packaging tapes. It is biodegradable, recyclable, and made from renewable resources, making it an excellent choice for businesses looking to reduce their environmental impact.

    Water activated paper tape is commonly used in shipping, packaging, and storage applications.

Slitting Machine structure

unwinding stand 193
Unwinding Section
An unwinding stand is a machine used in the paper manufacturing industry to hold and unwind large paper rolls, or jumbo rolls.
slitting blade 193
Slitting Section
A slitting blade is a crucial component of a paper slitting machine that allows for precise cutting and splitting of paper into smaller, more manageable sizes.
PLC system
PLC System
PLC is a high precision digital computer used in industrial automation and control systems. It behalf of the brain of the human.
tension brake section
Tension Control Section
A magnetic powder brake is a type of braking mechanism that uses magnetic particles to transfer torque between a rotating shaft and a stationary component.
EPC section
EPC Section
Web guide system uses sensors to detect the web's position and adjust the guidance mechanism to ensure the material stays centered and aligned throughout the production process.
Rewinding section
Rewinding Section
Rewinding shaft are used to rewind and cut paper rolls to the desired size, making them ready for distribution.
workshop 1920 450
Korea client
Kim Jung From Korea
Touma From Japan
Touma From Japan
Walter from Germany
Walter from Germany
Joseph from USA
Joseph from USA
Luan from South Africa
Luan from South Africa
Fayez from Saudi Arabia
Fayez from Saudi Arabia
Johan from Sweden
Johan from Sweden
Mr.Tsai from Taiwan
Mr.Tsai from Taiwan

GSM: 3 Aspects to Understanding Paper Thickness

When it comes to paper, one of the most important factors to consider is its thickness.

The thickness of paper determines its weight, durability, and suitability for various applications.

One unit of measurement used to express paper thickness is GSM.

In this article, we will discuss GSM and its significance in paper production.

What is GSM?

GSM stands for “grams per square meter” and is a measure of paper’s weight.

It represents the weight of one square meter of paper in grams.

For example, a paper with a GSM of 100 means that one square meter of that paper weighs 100 grams.

The higher the GSM, the thicker and heavier the paper is.

Exchange GSM to Microns

To convert GSM to microns (also called micrometers), you can use a simple formula:

Thickness in microns = (GSM/grams per square meter) x 1000

For example, to convert 120 GSM paper to microns, you can use the following formula:

Thickness in microns = (120/grams per square meter) x 1000 = (120/80) x 1000 = 150 microns

How to measure paper thickness?

There are various methods of measuring paper thickness, but the two most commonly used are micrometer and caliper.


A micrometer is a precision instrument that measures thickness by applying a constant pressure to the paper’s surface and measuring the distance between the two points of contact.


It provides a highly accurate measurement of paper thickness and is commonly used in the paper industry.


A caliper is another tool used to measure paper thickness.

It has two jaws that are used to grip the paper, and the distance between the jaws represents the paper’s thickness.


While less precise than a micrometer, a caliper can still provide an accurate measurement of paper thickness.

Understanding GSM in relation to paper types:

Now that we have an understanding of what GSM is and how it is measured, let’s look at how it relates to different types of paper.

35-55 GSM paper

This is the thinnest form of regular paper, commonly used for newspapers,thermal paper roll,flyers, and other lightweight applications.

jumbo roll

It is fragile and tears easily, but its low cost makes it a popular choice for large print runs.

90-120 GSM paper

This is the average weight of regular office A4 paper or copy paper.

A4 paper

It is thicker and more durable than 35-55 GSM paper, making it suitable for printing documents, forms, and letters.

130-250 GSM paper

This weight is commonly used for promotional posters, brochures, and flyers.

It is thicker than regular office paper and has a more professional look and feel.

260-300 GSM paper

This weight is thicker but still bendable and is commonly used for high-end brochures or magazines.

It has a premium look and feel and is suitable for printing high-quality images.

350-450 GSM paper

This is the heaviest and most rigid card weight, which will easily stand under its own weight.

It is commonly used for business cards, invitations, and other high-end printed materials.


GSM is an important factor in paper production and determines its weight, thickness, and durability.

Understanding GSM and how it relates to different types of paper is crucial when choosing the right paper for your printing needs.


Whether it’s lightweight newspaper or heavy-duty business cards, GSM is a key factor to consider.

What is A4 paper thickness?

The thickness of A4 paper can vary depending on the weight or grammage of the paper.

A standard A4 paper typically has a thickness of around 0.1 millimeters.

However, the weight of the paper can affect the thickness.

For instance, A4 paper with a weight of 80 grams per square meter (gsm) is thicker than A4 paper with a weight of 70gsm.

Generally, higher the weight or grammage, the thicker the paper.

How do you convert GSM to pounds?

The formula for converting GSM (grams per square meter) to pounds is:

Weight in pounds = (Weight in GSM x 0.00220462)

To use this formula, you simply need to multiply the weight in GSM by the conversion factor of 0.00220462. For example, if you have a paper with a GSM of 55, the weight in pounds would be:

Weight in pounds = (55 x 0.00220462) = 0.12125 pounds per square meter

Conversely, if you want to convert a weight in pounds to GSM, you can use the formula:

Weight in GSM = (Weight in pounds / 0.00220462)

By using these formulas, you can easily convert between GSM and pounds, which can be useful in a variety of industries where the weight of materials is important to consider.

Is 200 gsm paper thick?

GSM stands for “grams per square meter” and it is a measure of the weight or thickness of paper or cardstock.

Generally speaking, a higher GSM value indicates a thicker and heavier paper.

Therefore, a 200 gsm paper is considered to be relatively thick and heavy compared to standard printer or copy paper which is typically 80-90 gsm.

It is commonly used for printing brochures, business cards, invitations, and other similar applications that require a more substantial and durable paper.

However, it is important to note that the thickness of a paper also depends on other factors such as the material used, the finish, and the manufacturing process.

So while 200 gsm paper is generally considered thick, it may not be suitable for all applications and it’s always best to check the specific requirements of your project before selecting a paper.

How to know paper thickness?

One of the simplest methods for determining paper thickness is to cut a 1-square piece of the paper and weigh it.

This weight can then be used to determine the paper’s thickness, which is commonly measured in GSM (grams per square meter).

How do you know if paper is thick or thin?

As a professional, it is important to be able to accurately determine the thickness of paper in order to make informed decisions regarding printing, packaging, and other applications.

There are several methods that can be used to determine paper thickness, including tactile inspection, GSM measurement, and weight comparison.

One way to assess paper thickness is through tactile inspection, where you can physically touch and feel the paper to determine whether it feels thick or thin.

However, this method can be subjective and may not provide accurate measurements.

A more precise method is to check the GSM measurement, which is often marked on the packaging of the paper.

GSM refers to grams per square meter and indicates the weight of the paper per unit area.

Generally, a higher GSM indicates a thicker paper.

Another method is to compare the weight of a square of the paper.

The heavier the weight of a square, the thicker the paper is likely to be.

For example, a paper with a weight of 200gsm is generally thicker than a paper with a weight of 55gsm.

Overall, using a combination of these methods can help you accurately determine the thickness of paper and make informed decisions when choosing paper for various applications.

Send Your Inquiry Today
Quick Quote
Scroll to Top