JIS K 7136 Light Transmission Testing of Plastic Office Products

The JIS K 7136 test standard is a critical tool in evaluating the optical properties of plastic office products. This method specifically assesses light transmission through transparent or semi-transparent plastics used in office equipment such as binders, folders, and other stationery items. Understanding how much light can pass through these materials is essential for ensuring both functionality and aesthetic appeal.

The test procedure involves measuring the amount of visible light that passes through a specified thickness of plastic sheet. The measurement typically covers wavelengths from 380 to 780 nanometers, which correspond to the visible spectrum. Compliance with JIS K 7136 ensures that products meet the performance requirements set by Japanese industry standards.

The process begins with careful selection and preparation of specimens. Specimens are cut into standard sizes and shapes as specified in the standard. It is crucial to ensure uniform thickness across all samples for accurate testing results. Once prepared, the specimens are placed between two parallel plates within a specially designed instrument that measures light intensity.

The instrument operates by shining a controlled source of white light onto one side of the specimen and measuring the amount of light transmitted through it on the opposite side. This measurement is compared against reference values defined in JIS K 7136 to determine compliance. Variations in lighting conditions or sample thickness can significantly affect results, underscoring the importance of precise control over test parameters.

In real-world applications, this testing method helps manufacturers optimize material choices and manufacturing processes to achieve desired optical properties. For instance, companies aiming for high opacity might adjust their formulations accordingly. Additionally, it allows for consistent quality across different batches or suppliers by providing a standardized measurement process.

Compliance with JIS K 7136 can enhance brand reputation among consumers who value the transparency and clarity of office products. It also supports regulatory compliance in markets where these standards are enforced. By adhering to this test method, companies demonstrate their commitment to quality control and consumer satisfaction.

Applied Standards
Standard Number	Title	Year Published
JIS K 7136	Light Transmission of Plastic Sheets and Films (Transparent or Semi-transparent)	2021

Frequently Asked Questions

What is the purpose of JIS K 7136 Light Transmission Testing?

The primary purpose of this test is to evaluate the optical properties of plastic materials used in office products. Specifically, it measures how much visible light passes through a specified thickness of these plastics.

Who needs to perform JIS K 7136 testing?

Quality managers, compliance officers, R&D engineers, and procurement personnel involved in the development or manufacturing of office products may need to conduct this test.

What kind of equipment is required for JIS K 7136 testing?

Specialized instruments designed specifically for measuring light transmission through plastic materials are necessary. These devices provide controlled sources of white light and precise measurement capabilities.

How long does the JIS K 7136 testing process take?

The duration can vary depending on factors like sample size and equipment availability, but typically it takes around two to three days from preparation of specimens to final analysis.

What are the consequences of non-compliance with JIS K 7136?

Non-compliance could lead to product recalls, legal action, and damage to brand reputation. It may also result in penalties imposed by regulatory bodies.

How does JIS K 7136 testing benefit manufacturers?

It ensures consistent quality across different batches or suppliers, supports regulatory compliance, and enhances brand reputation by demonstrating a commitment to quality control.

Can JIS K 7136 testing be adapted for other types of plastic materials?

Yes, while the standard is primarily focused on transparent or semi-transparent plastics used in office products, it can be adapted for similar materials across various sectors.

What are some common challenges faced during JIS K 7136 testing?

Common challenges include achieving uniform thickness in specimens, maintaining consistent lighting conditions, and ensuring precise measurements. Proper training of personnel is key to overcoming these obstacles.