Moisture and heat resistance test for adhesive

Evaluation of adhesive strength in high temperature and high humidity environments! Chemical analysis (FT-IR, GCMS, etc.) is also available to elucidate the degradation mechanisms of materials.

We conducted a "moisture and heat resistance test for adhesives" to investigate changes in adhesive strength due to the effects of moisture and heat. The test specimens were placed in a constant temperature and humidity testing machine, and after 500 hours, they were removed to measure the tensile shear adhesive strength. It is presumed that the adhesive strength decreased due to the swelling of the adhesive in a high-temperature and high-humidity environment. We can conduct various environmental tests and strength tests for various materials, not limited to adhesives. Additionally, we also provide chemical analysis to elucidate degradation mechanisms. [Test Results] - The adhesive strength (breaking stress) of the samples placed in a humid heat environment for 500 hours significantly decreased. - From the stress-strain curves of the tensile tests, a decrease in the modulus of elasticity was confirmed for both adhesives A and B. - It is presumed that the adhesive strength decreased due to the swelling of the adhesive in a high-temperature and high-humidity environment. *For more details, please download the PDF or feel free to contact us.

• Other Testing Contract

The time for celebration has come! The new production hall has started operations! While finishing work continues in other parts of the building, metal shavings are already being produced in the first machining center. Last Friday afternoon, employees and their families, along with companies involved in the construction, gathered to celebrate the achievements so far. Cold drinks, hot barbecue, and an ice cream stand were provided. During the celebration, many employees had the opportunity to tour the entire new building for the first time. Visitors were introduced to the new machines and improved logistics through guided tours of the production area. The new training room, the training center on the upper floor, and the latest conference room for customers were also unveiled. With this new building, Volkmann GmbH has secured an additional 4,500 square meters of production space. This expansion was very important, as the existing hall had already reached its limits due to the company's ongoing growth and increased production volume.

▶Issue: Before further processing the powder in the next stage (such as packaging machines), it is necessary to inspect for the presence of metal foreign objects using a metal detector. To achieve high sensitivity, the powder needs to be inspected through free fall, but due to low ceiling height and operational inconvenience, it is not possible to install the metal detector in the next stage. ▶Solution: The CEIA metal detector will be installed under a Volkmann vacuum conveyor and on a Volkmann mobile lift. The height-adjustable lift will allow the product discharge outlet of the metal detector to be adjusted to the appropriate height for the mobile container. Additionally, the vacuum conveyor can be lowered to a height that allows the mobile lift to pass through doors. The powder will be transported, for example, from an IBC container to the mobile lift and then to the metal detector via vacuum transfer. Metal foreign objects will be sorted and collected in a separate bottle. The inspected powder will be collected in a mobile container. Another vacuum conveyor is installed for the next stage, such as the packaging machine, from which the powder will be drawn from this container. Inspection and separation of metal parts can be conducted very close to the next stage, and it is also possible in more distant production areas.

The video shows that there is a tank at the bottom of the vacuum conveyor, and steam is constantly being released (in a simulated manner). If no measures are taken, the steam will enter the inside of the vacuum conveyor, condense into water droplets, and cause powder adhesion. Both our company and our customers have been troubled by such installations. This time, with the special module jointly developed with Minato Engineering Co., Ltd., we have succeeded in blocking the rising steam. From around the middle of the video, you can see that this function is turned on. You should be able to understand that the steam that was previously rising has disappeared. As a result, it has become possible to install equipment in a steam atmosphere, which was previously difficult to do, with peace of mind.

【Period: Ongoing until October 31, 2025】 For orders of 10 pieces or more: Dry T-shirt 1 piece @1,800 yen (tax included) Dry Polo Shirt 1 piece @2,300 yen (tax included) (Includes garment and one print location) For sizes 3L and above, an additional 550 yen An additional 550 yen for each additional print location Design and data production fees are required separately. (No fee if submitting complete data) We accept orders for various purposes such as events, teams, goods, souvenirs, and gifts, from one piece to mass production. We also have many other garments not listed. Please feel free to inquire.

September 1st to October 31st For events, exhibitions, and store promotions! A useful tote bag that makes a great gift Would you like to create a popular tote bag for promotional goods? We offer three convenient sizes. For more details, please contact us.