In the silicone industry, to meet the user experience of the majority of consumers, multi-color products have always been the best-selling products, the process is used in silicon materials bonding and plastic bonding.
1. Soft and hard plastic two-color design
In the silicon bonding area, several silicon materials will be used to achieve different color silicon, different rubber components, so the multi_k color process is commonly used and is quite popular.
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Coal chemical projects are still high fever
At the end of September 2009, the State Council approved and forwarded the “Several Opinions on Suppressing Overcapacity and Repeated Construction in Some Industries and Leading the Healthy Development of Industries†submitted by 10 ministries and commissions (No. 38), clearly stating that no new arrangements should be made in principle for the next three years. Modern coal chemical pilot project. Just a dozen days, the domestic coal chemical industry has reported so much good news, people have to be more confident in the coal chemical industry. On October 19th, Shan Xiize's "532" coal chemical project signed an agreement with a total investment of 10.25 billion yuan. The construction project includes 5 million tons of coal mines, 3 million tons of methanol and 2 million tons of methanol, and the goal is to become the largest coal chemical project in the country. At present, the project has completed the initial investment of more than 40 million yuan.
According to November 3, Shenhua Group Co., Ltd. and Dow Chemical Co., Ltd. jointly build an annual output of 3.32 million tons of methanol and 1.22 million tons of methanol to olefins, which will become the world's single largest coal chemical project. According to December 5, the signing ceremony for the memorandum of cooperation between China National Development and Investment Corporation and China Petrochemical Corporation was held in Beijing. The two sides will jointly invest in the construction of coal mining, coking and coal-to-olefin projects in the Yili area of ​​Xinjiang, etc... This series of investment scale records has been refreshed, which fully proves that regardless of how much the central government's warnings have been raised, the enthusiasm for launching projects across regions or expanding coal chemical projects remains high.
The methanol industry market continues to rise
The increase in heating demand for coal and natural gas in winter has led to insufficient supply of raw materials for domestic methanol companies and load operation at installation sites. The price of coal has also risen. Under this expectation, costs have been transmitted to downstream methanol and dimethyl ether, and the cost of chemical companies across the country is expected to increase significantly. In the later period, due to excessive price rises and excessive prices, the downstream profit margins are compressed, and market growth may slow down. However, the import volume will continue to remain low, natural gas supply will be tight and market supply problems will remain. In the short term, the domestic methanol market will still be expected to continue. Join the high pace.
Fertilizer industry market advance recovery period
At present, fertilizer industry information, China's export tariffs for off-season fertilizers in 2010 may be slightly reduced. From January 1, 2010, 10% of the export tariffs on urea and phosphate fertilizers may be slightly reduced to 7%, and the tariffs will remain unchanged during the peak season. Therefore, it is expected that the introduction of this policy will probably stimulate the early entry of the fertilizer market economy into the recovery period, especially the urea industry is expected to be optimistic.
Current organic fertilizers, bio-organic fertilizers, and microbial fertilizers are the sunrise industries that experts are optimistic about, businesses are optimistic about, farmers welcome, and the government supports. With the adjustment of domestic planting structure and the improvement of farmers' scientific fertilization level, new fertilizers such as organic fertilizers, bio-organic fertilizers, and microbial fertilizers will once again usher in development opportunities in Guangdong.
According to industry sources, some domestic chemical products are suspected of excessive recovery, such as liquefied gas, LDPE, acetone, although the market is better, rose by nearly 20% in just one month.
The two materials must have a certain temperature difference in the melting point. Generally, it is recommended to reach 60°. It is recommended to be at least 30°. The melting temperature of the first shot material is high. Generally, the first shot is PC or PC/ABS, and the second shot is TPU or TPE, PC thickness is 0.6-0.7mm, soft rubber part thickness is required to be 0.4mm or more.
Try to widen the contact area, make grooves to increase the adhesion, or use the core for the first shot, and the second part of the material is injected into the first shot. The surface of the first shot is as rough as possible.
2. Material compatibility
Multi-color injection molded mating materials must meet two basic compatibility conditions. They are compatible with the adhesive compatibility and processing.
3. Transparent and non-transparent two-shot design
(1) Double shot design of small lenses
The first shot is non-transparent, and the second shot is made of a lens. The first shot uses a PC with a high melting point and the second shot uses a PMMA.
(2) Transparent and non-transparent bijective design for decoration
The first shot is a non-transparent material, the second shot is a transparent material, and the non-transparent material is generally a high temperature of the PC material of SABIC, and the second shot transparent material is PMMA or PC. The PC needs to be sprayed with UV to protect it. PMMA can choose uv or fortification. If there are characters on the surface, you must choose UV
A new round of the chemical industry warmer market entered the adjustment pattern at the end of the year
According to the report of the China Securities News on December 8, the Chinese economy has continued to enter a period of warming since 2009. In particular, the demand for the chemical market in November has shown signs of obvious recovery, and the demand for many upstream products has increased significantly. Not only the most profitable industries such as petrochemical products can be seen, but many not-so-intuitive chemical raw materials have also been improved. In many industries, capacity utilization rate is increasing, gross margin is rising, and performance is improving. In particular, the change in weather in November also stimulated the chemical market to pick up one of the trends. At the end of 2009, HC Chemical Network will take you to see which chemical industry will enter the warmer period earlier.