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China Factory Suppliers Screen Printing Squeegee - Essential Tool for Ink Transfer in Screen Printing Process
Definition and Function
Its main functions include:
Transfer the ink onto the substrate through a screen.
Scrape off excess ink from the screen.
Maintain contact between the screen and the substrate.
Adapt to substrates of different shapes.
Materials and Characteristics
The common screen printing scraper is made of polyurethane rubber, which has the following characteristics:
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Solvent resistance
Able to resist the erosion of various chemical solvents.
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Wear resistance
Long service life, suitable for high-precision printing.
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Hardness range
The hardness is usually between 55-90 Shore A, divided into three types: soft, medium, and hard.
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Elasticity
Good resilience ensures even distribution of ink during the printing process.
Selection and application of scraper
Choosing a suitable scraper requires consideration of the following factors:
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Hardness
Scrapers with high hardness are suitable for high tension wire mesh, while scrapers with low hardness are suitable for low tension wire mesh.
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Ink performance
Select the length, thickness, and hardness of the scraper based on the viscosity, fineness, and hardness of the ink.
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The performance of the substrate
Hard or uneven substrates are suitable for using softer scrapers.
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Printing requirements
When a large amount of ink needs to be transferred to the substrate, a softer scraper should be used.
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Printing pressure
When the pressure is high, it is not suitable to use a scraper that is too soft.
Product Details
Structure and size of scraper
Blade
The sharpness and straightness of the blade directly affect the printing quality.
Effective height
Usually refers to the part where the scraper extends from the handle, generally not less than 2cm.
Size
Common scraper lengths include 1000mm, 2000mm, 3000mm, etc. The width and thickness can be selected according to specific needs.
Use and maintenance
Usage tip: The angle, pressure, and speed of the scraper can all affect the printing effect.
Maintenance: Regularly check the sharpness and straightness of the blade, and if necessary, polish or replace it.
The selection and use of screen printing scrapers have a significant impact on printing quality. Proper selection and maintenance of scrapers can significantly improve printing results and production efficiency.
Frequently Asked Questions (FAQ)
What are the primary functions of a screen printing scraper?
The main functions of a scraper are to transfer ink onto the substrate through a screen, scrape off excess ink, maintain uniform contact between the screen and substrate, and adapt to substrates of different shapes.
What materials are screen printing scrapers typically made of?
Common screen printing scrapers are made of high-quality polyurethane rubber, which provides excellent solvent resistance, wear resistance, elasticity, and ranges in hardness from 55 to 90 Shore A.
How do I choose the correct hardness for a scraper?
Scrapers with high hardness are recommended for high-tension wire mesh, while softer scrapers are better suited for low-tension wire mesh or when printing on hard, uneven substrates.
What are the standard sizes available for screen printing scrapers?
Common scraper lengths include 1000mm, 2000mm, and 3000mm. The width, thickness, and effective height (which should be at least 2cm from the handle) can be selected based on specific application needs.
How do printing pressure and ink performance affect scraper selection?
You must select the scraper's length, thickness, and hardness based on the ink's viscosity and fineness. Additionally, softer scrapers should not be used under high printing pressure, but are ideal when a large amount of ink needs to be transferred.
What maintenance is required to ensure optimal printing results?
You should regularly check the sharpness and straightness of the blade. If the blade becomes worn or uneven, it must be polished or replaced to maintain high printing quality and efficiency.
Industry specific attributes
Material |
100% Polyester |
Weave Type |
Plain |
Elasticity |
low |
Printing |
Polyester Screen Printing |
Monofilament Style |
Yes |
Product Name |
Polyester Silk Screen Printing Mesh |
Color |
White Yellow |
Length |
50m/roll |
Application |
Screen Printing Industry |
Thickness |
46-693um Printing Mesh |
Roll width |
60-368cm |
Feature |
Heat Resistance |
Aperture |
31-1300micron |
Packaging Details
Food Grade 100 Micron Polyamide Nylon Filter Mesh For Soya Milk :
1.30-100m/roll in PVC bag
2.2-8 rolls per carton
3.waterproof bags outside
4.package belt strengthen
