PCB News - PCB products can be marked with environmental protection labels

At present, the EU is not a compulsory regulatory system to affix environmental labels, but the EU will continue to expand the number of products required to obtain the labels, and will gradually move towards the mandatory implementation of the regulatory phase. European companies have already adopted environmental labeling as a Important means in marketing strategy. Faced with "green barriers", the PCB industry must effectively establish its own green line of defense to meet the needs of international green business. How to plan ahead and overcome barriers to win the market?

1. The understanding of restricted metals and substances is based on the analysis of their potential hazards to the human body.

1.1 Six types of hazardous substances

1.1.1 Lead (Pb)

Highly hazardous substances, which enter the human body through the respiratory tract and digestive tract mainly in the form of dust and smoke. It is quickly absorbed through the respiratory tract, about 20-30% enters the blood cycle, and about 5-10% is absorbed through the digestive tract. Some studies have shown that lead is toxic, damages the human body’s replication performance, and accumulates in the human body, causing neurological disorders, and adversely affecting the blood system and kidneys; it also pollutes water, soil and air.

1.1.2 Cadmium (Cd)

Cadmium is a by-product of zinc extraction. It is mostly used in electroplating and manufacturing alloys, solders, dyes and paint pigments, as well as in the manufacture of plastics. There is no such plating in the CB industry. Studies have shown that cadmium can cause renal system disorders, resulting in human bone softening, joint pain, bone dismantling and bone deformation, and affect the effectiveness of the human body’s beneficial elements, causing liver and kidney damage, emphysema, respiratory tract, endocrine, and blood vessel fatification Other diseases are carcinogens and induce prostate cancer.

1.1.3 Mercury (Hg)

Metallic mercury enters the human body from the respiratory tract in the form of vapor, which is less absorbed by the skin, but more absorbed when the skin is damaged; it is not absorbed by the digestive tract; mercury vapor easily enters the human body through the alveolar membrane and dissolves in the blood. The content is more in the kidneys. And enter the brain tissue through the blood-brain barrier. It can suppress the function of the human protease system, and cause abnormal reactions, cause nephrotic syndrome, cause immune damage, central nervous system damage, lung failure, and cause abnormal reproductive function.

1.1.4 Chromium (Cr6+) Hexavalent chromium is banned by the European Union because it can cause cancer or mutation. Cr6+ is often used as chromic acid in the electronics industry.

Cr6+ is for swallowing humane poisons/inhaling humane poisons, skin contact may cause sensitivity; it is more likely to cause genetic genetic defects; inhalation will cause cancer and have lasting harm to the human body, but metallic chromium, trivalent or tetravalent chromium does not have these toxicity .

1.1.5 Polybrominated biphenyls/polybrominated diphenyl ethers

The dioxin produced by is extremely toxic and very undisturbed. It belongs to a class of carcinogens, because it is extremely difficult to separate and cannot be excreted after being ingested by the human body, thus severely threatening human health.

1.2 Six hazards of hazardous substances

Brominated flame retardants PBB and PBDE will produce highly toxic dioxins in the case of incomplete combustion

The mechanism of dioxin harmful to human health is roughly divided into four aspects:

1. It produces effects similar to endocrine hormones in the human body.

2. The effect of destroying the normal secretion of endocrine hormones in the human body.

3. Destroy the process of synthesis and metabolism of the human body secreting hormones.

4. Destroy the synthesis and metabolism of endocrine hormone receptors.

leads to the reduction of human immune function, changes in reproductive and genetic functions, susceptibility to malignant tumors, etc.

From this we pay more attention to these substances, pay more attention to our environment, and pay more attention to our health.

2. The understanding of halogen-free and lead-free and restriction and prohibition

The ROHS directive restricts the use of six major hazardous substances, which requires an accurate understanding of the meaning of the directive.

1. Prohibited to use:

It is forbidden to intentionally use a specific chemical substance, and it is allowed to exist in the form of impure substance, but its use as the concentration of impure substance is restricted.

2.1 Lead limit value <100ppm is lead-free

2.2 Cadmium limit value <5ppm

2, 3 mercury limit value 1000ppm

2.4 Chromium (") limit value 1000ppm

2,5 PDD／? BDE limit value 1000ppm

2.6 Halogen-free chlorine (C1) (Br) content is less than 0.09% (wt).

2.7 Explanation of limit value

Since November 1999, the Japanese PCB Industry Association (JPGA) has announced the implementation of six halogen-free copper clad laminate standards. This is the world’s first homework standard for halogen-free copper clad laminates. It is the first time in this series of standards. The “halogen-free” characteristics of copper clad laminates are defined: the definition standard that the chlorine content or the bromine content is less than 0.09wt% was later cited in the drafting of related or similar standards by the European Union and the United States; IEC also defines this Include the scope of its standards. In 2000, the IPC promulgated IPC-4101 "Specifications for Rigid and Multilayer Printed Board Substrates" also included the halogen-free standard value IPC-4101/92, 93, 94, 95

2. Restricted use:

promises to intentionally use a certain chemical substance or promises to exist in the form of a relatively large amount of impurities, and its usage or content usage restrictions have certain restricted uses.

contain control:

It is agreed to intentionally use a specific chemical substance, and the content is limited by mistake, but it is necessary to explain the content, the content and the purpose of the content and other information purposes.

3. ICP detection method for six major substances

There are a variety of testing methods for the six major substances, which can be divided into soluble and insoluble testing methods. The testing method must be clear when sending for testing, otherwise it will be deemed invalid.

4. How to apply for testing for PCB products

4.1 Raw materials and product ICP inspection presentations provided by raw material manufacturers (the content of the presentation must correspond to the list of raw materials one by one, and the validity period of the presentation is 1 year). These ICP testing lectures must be published by recognized third-party organizations.

4.2 Application test process

4.2.1 Request an application form

You should get in touch with any of the above two tests and ask for it (application form, application test procedure, test product quotation, and test cycle).

5. How do PCB companies establish an environmental quality assurance system

In order to make the printed board production process, the products can continue to meet the environmental substance control standards, and meet the RBOS regulations and customer requirements. PCB companies should establish an effective environmental quality assurance system. The program documents can be shared with existing ISO or QS system documents.

6. Understand China's environmental labeling system

Eco-labeling is known as the "environmental labeling system" in China. In May 1994, the country established the China Environmental Labeling Product Certification Committee (CCEL), which is responsible for monitoring and governance under the guidance of the former National Quality and Technical Supervision Bureau and the State Environmental Protection Agency. The purpose of the third-party certification program and the China Environmental Labeling Program is to serve as a supplementary tool for compulsory environmental protection flows, and to reduce the pressure on the environment caused by production through market forces. In addition, the plan seeks to increase public awareness of the environmental impact of consumer products and promote the commercialization of environmentally friendly products. The country began to implement environmental label certification in 1994, and its biggest feature is the strict environmental requirements for the entire production cycle of products from design, production, use to disposal. At the end of 2002, China's environmental labeling has launched certification of 46 categories of products in the fields of home appliances and other fields. 46 technical requirements for environmental labeling products have been promulgated, and PCB testing is currently included in the certification plan.