Waterproof fineliner pens are a common writing tool, widely used in office, painting, handbooks, laboratory records and other scenes. Compared with ordinary signature pens, waterproof fineliner pens have stronger water resistance, and are not easy to blur or disappear due to water after writing. However, there are many types of waterproof fineliner pens on the market, and the quality is uneven. How to judge its waterproof effect? This article will introduce you to several simple and easy-to-use test methods, so that you can easily distinguish high-quality waterproof fineliner pens. At the same time, if you are looking for a waterproof fineliner pen supplier, you can also use these test methods to evaluate product quality and choose the most suitable product for you.
1. The basic principle of waterproof fineliner pens
Before understanding the test method, let's take a look at why waterproof fineliner pens are waterproof. waterproof fineliner pens on the market usually use water-resistant ink, which is mainly divided into the following categories:
Pigment ink: It uses tiny pigment particles that are insoluble in water. Even if it comes into contact with water after writing, the ink remains intact.
Quick-drying oily ink: This type of ink contains quick-drying ingredients, which quickly solidify after contact with paper and are not easily dissolved by water.
Gel ink: Although it uses water as a solvent, it will form a stable ink mark after drying, and it is highly water-resistant.
After understanding these basic principles, we can use different methods to test the performance of waterproof fineliner pens.
2. How to test waterproof fineliner pens?
Water drop test
Test method:
Write a few lines of text or draw a small pattern with a signature pen on ordinary paper.
Let it stand for 30 seconds to 1 minute to allow the ink to dry fully.
Dip a dropper or finger in water and drop it on the writing area to observe whether it is smudged or faded.
Evaluation criteria:
High-quality waterproof pen: After the water drop stays, the handwriting is clear and not blurred, and there is no obvious smudge or diffusion.
Poor-quality waterproof pen: After the water drop, the handwriting becomes lighter or diffuses, and is even washed away by water.
Soaking test
Test method:
Take a piece of paper and write text or patterns on it.
Soak the paper completely in water for 1-5 minutes to simulate accidental splashing or soaking.
Remove the paper, let it dry naturally or use a paper towel to absorb the moisture, and observe the changes in the handwriting.
Evaluation criteria:
Excellent waterproof pen: The handwriting is clear and not deformed, and even if the paper is wrinkled, it will not affect the recognition.
Poor quality waterproof pen: The handwriting becomes faint, blurred, or even disappears completely.
Wipe test
Test method:
After writing on the paper, wait for the ink to dry (usually 1-2 minutes).
Gently wipe the written part with a wet paper towel or wet cloth and observe the changes in the handwriting.
Evaluation criteria:
Excellent waterproof pen: The handwriting is complete, without blurring, smudges or falling off.
Poor quality waterproof pen: The handwriting will spread, blur or be wiped off.
Flush test
Test method:
Write on smooth surfaces such as glass, plastic, and metal.
Let the ink dry completely (it may take 5-10 minutes).
Gently rinse the written area with a tap and observe whether the handwriting falls off.
Evaluation criteria:
High quality waterproof pen: The handwriting is still clearly visible and there is no obvious loss.
Low-quality waterproof pen: The ink is washed away by water or partially disappears.
Alcohol or detergent test (solvent resistance test)
Test method:
Write on paper or smooth surface.
Spray the writing area with 75% alcohol or glass cleaner.
Wipe gently to see if the writing dissolves or fades.
Evaluation criteria:
High-quality waterproof pen: The writing remains intact and hardly changes.
Low-quality waterproof pen: The writing fades or disappears significantly.
Test on different papers
Papers of different materials will affect the performance of waterproof fineliner pens, so they can be tested on different papers:
Ordinary A4 paper: for daily office writing.
Notebook paper: Check whether it penetrates the back.
Coated paper (such as photo paper, or express delivery slip): observe the ink adhesion.
Waterproof synthetic paper: see if the ink can be firmly adsorbed.
High-quality waterproof pen: stable performance on a variety of papers, no smudges or ink penetration.
Poor-quality waterproof pen: severe penetration or smudges on some papers. 3. How to choose a high-quality waterproof fineliner pen?
When testing waterproof fineliner pens, we can judge the product quality from the following aspects:
Check the product description: Regular waterproof fineliner pen manufacturers will mark the ink type (pigment type, oil type or gel type) in detail and provide water resistance test data.
Measured waterproofness: You can use the method mentioned above to compare the waterproof performance of different brands and choose the product with the best waterproof performance.
Consider the applicable scenario: If it is used outdoors or in a laboratory environment, you should choose a waterproof fineliner pen with pigment ink, which has stronger water resistance.
Brand and reputation: Choose a waterproof fineliner pen supplier with a good reputation to ensure stable quality.
The quality of waterproof fineliner pens directly affects the writing experience and file preservation effect. Through water splashing tests, immersion tests, wiping tests, alcohol tests, and UV tests, we can comprehensively evaluate the actual performance of waterproof fineliner pens and choose products that suit our needs. Whether it is for office, painting,g or outdoor use, mastering these test methods can help you better judge the performance of waterproof fineliner pens. I hope the content of this article can help you choose the most suitable waterproof fineliner pen and make your writing more assured!
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