How to Verify Metal and Glass Ink Adhesion Before Scaling Up

Before increasing production, check ink adhesion on samples that reflect the actual metal or glass part and the planned printing process. Use the intended surface condition, printing method, and production settings, then review both adhesion and print appearance. Shichuangli’s product information lists several printing methods for its PP ink, but it does not specify a metal- or glass-specific test procedure or acceptance limit.

Start with Representative Samples

A trial is most useful when it mirrors the planned production setup. Print on the intended metal or glass material, using the same surface preparation, printing method, and process conditions expected for the production run. After processing, inspect whether the print stays attached and whether its appearance is consistent.

Document the material, surface condition, printing method, process used, and inspection results. Keep accepted samples as references. If the substrate or process changes, evaluate the revised combination before relying on the earlier result.

What the Product Data Does and Does Not Confirm

Shichuangli lists its PP ink as item SCL-00YM, supplied at a net weight of 1,000 g per piece. Available colors are black, white, red, blue, yellow, and green. Listed printing methods include screen printing, pad printing, offset printing, and screen flexographic printing.

The product information names applications such as shampoo bottles, cosmetic bottles, stationery products, and batteries, but does not specifically identify metal or glass substrates. It also does not state curing settings, a durability-test method, or a pass/fail threshold for adhesion. Ask the supplier to confirm suitability and agree on an evaluation method for your particular material and application.

Sample Review and Production Readiness

Application Context

Shichuangli describes printing work across consumer products, electronics and household appliances, automotive parts, and packaging. Its stated PP ink applications include packaging and consumer-product examples such as shampoo and cosmetic bottles. These references indicate relevant printing contexts, but do not establish adhesion performance on every metal or glass surface.

The company profile also lists IECEx certificate IECEx PTB 05.0006X for an electromagnetic valve and trademark registrations related to printing equipment. Neither is presented as certification of PP ink adhesion on metal or glass. A case involving a Saudi Arabian hotel-product distributor describes screen printing, heat-transfer printing, and hot stamping on different materials; it is not a documented adhesion test for this ink.

Frequently Asked Questions

Does the product information verify adhesion on metal and glass?

No. The supplied data does not name metal or glass as applicable substrates or report substrate-specific adhesion results. Test the ink on the materials used for your product and confirm suitability with the supplier.

Which printing methods are listed?

The product information lists screen printing, pad printing, offset printing, and screen flexographic printing. Confirm which method fits the part and planned production process.

What should be settled before scaling up?

Confirm the substrate and its surface condition, the printing method and process conditions, how samples will be inspected, and the acceptance criteria. The supplied data does not define a test protocol or numerical pass threshold.

Recommendation

Base the move to volume on a trial using the intended metal or glass part and production process. Record the results for adhesion and appearance, retain an approved sample, and agree on application-specific acceptance criteria with the supplier. Shichuangli states that it offers OEM/ODM customization and technical training. For guidance on this PP ink and a particular substrate, contact support@shichuanglimachine.com.

About Shichuangli

Dongguan Shichuangli Zhihui Technology Co., Ltd. is based in Huangjiang Town, Dongguan, Guangdong. Established in 2008, the company combines printing-equipment design, research and development, production, sales, and technical training. Its factory training base covers more than 1,600 square meters, and its products include printing equipment and supporting materials such as inks. Listed credentials include IECEx certificate IECEx PTB 05.0006X for an electromagnetic valve and trademark registration certificate 42347920 for printing-related goods; these do not certify PP ink adhesion on metal or glass. The company has also described work with a Saudi Arabian hotel-product distributor.