Injection mold processing is divided into several stages？

The injection molding process can be roughly divided into the following six stages

Clamping, glue, pressure maintaining and cooling, mould and products.

The above process again and again, can batch periodically to produce products. Thermosetting plastic and rubber molding including the same process, but a thermoplastic material barrel temperature is low, the injection pressure is higher, the mould is heated, finished material injection in the mold of the subject to curing or curing process, and then strike off membrane.

The trend of the current processing technology is developing towards the direction of the high and new technology, these technologies include: micro injection molding, high filling compound injection, water injection, mixed with a variety of special injection molding process, foam injection molding, mold technology, simulation technology, etc.

The temperature control

Injection molding equipment and mold

1．nitrogen-treated barrel temperature, injection molding process, the need to control the temperature of the cylinder temperature, nozzle temperature and mould temperature, etc. The first two main influence plastic plasticizing temperature and flow, and then a temperature is mainly influence plastic flow and cooling. Each kind of plastic flow with different temperature, the same kind of plastic, due to different sources or brand, the flow temperature and decomposition temperature is little different, this is due to the different average molecular weight and molecular weight distribution, plastic in different type of injection machine of plasticizing process is also different, so choose the cylinder temperature is not the same.

2. The nozzle temperature, nozzle temperature is usually slightly lower than expected tube maximum temperature, this is to prevent the molten material in straight through the nozzle may be "salivate phenomenon". Nozzle temperature also cannot too low, otherwise will cause early setting of melting and the nozzle clogging, or due to early coagulation material into the cavity affect the performance of the products.

3．Pictures of mold temperature, mold temperature inner performance and apparent impact on the quality of products. Mold temperature is determined by the size of the plastic, of crystalline products and structure, performance requirements, and other process conditions (melt temperature, injection speed and injection pressure, molding cycle, etc.).

Pressure control

In the process of injection molding pressure including plasticizing and injection pressure, and directly affects the quality of plasticizing and plastic products.

1．plasticizing pressure: (back pressure) adopts screw injection machine, screw at the top of the molten material in the screw rotating back pressure is called the plasticizing, which is also called back pressure. The size of the pressure can be found on the overflow valve to adjust the hydraulic system. In injection, the size of the plasticizing pressure is depending upon the design of the screw, the product quality requirements, and the type of plastic and needs to change, if the situation and the screw rotation speed is constant, increase plasticizing pressure will strengthen shearing action, which will raise the temperature of the melt, but will reduce the plasticizing efficiency, increase the current and leakage flow, increase the driving power.

In addition, increase plasticizing pressure often can make the melt temperature uniformity, color mixing and discharge gas in the melt. general

Injection molding in the operation of the pressure curve, the plasticizing pressure shall be on the premise of guarantee the products quality is lower, the better, the specific values are vary with the varieties of the plastic, but usually rarely more than 20 kg/cm2.

2. Injection pressure: in the current production, almost all the injection pressure of injection machine are in piston or screw at the top of the plastic

On the pressure (by oil pressure conversion) shall prevail. Injection pressure in injection molding, the role of is, to overcome the flow resistance of plastic flowing from cylinder cavity, given the rate of molten material molding and compaction of molten material.

CNMOULDING shows how internet can be used to deliver custom mold manufacturer service around the world

CNMOULDING offers plastic molding services for various industries, such as automotive, electronics, home appliances and others around the world using the internet.

China based CNMOULDING believes in using the latest technologies to develop and deliver plastic molds to their industrial clients across the world. The company now uses the internet to build custom molds as per client specifications and reduces the time and cost of designing and engineering molds.

Offering their efficient plastic injection molding service through the internet, CNMOULDING allows customers to send drawings via email. Based on the drawing, they provide quotation for the molding project within twenty-four hours, and the workers of CNMOULDING provide the mold drawing for approval after receiving the Purchase Order from the customer. Once the drawing is approved by the customer, they start manufacturing the mold and send it for the customer's approval again. When the customer approves the sample mold and makes the payment, the production of mold is started. Thereafter, the mold is shipped to the customer.

The spokesperson of the company reveals that their CNMOULDING Mould development and delivery process has been liked by several customers around the world. The internet based process is much faster and helps deliver the product as per the customer's specification. With a strict drawing and sample approval process, the product precisely meets the customer requirements. Moreover, they have a worldwide product delivery mechanism to ship products anywhere in the world.

CNMOULDING maintains a systematic and transparent PO procedure that allows customers to put a control on the product quality, cost and the production cycle. The faster is the approval process, the quicker will be the design and development of the plastic mold. The company has a vast experience in the injection molding and designing and engineering of molds for a number of industries. This is the reason why an industrial client can rely on their production technology and the product quality.

Using the internet, CNMOULDING intends to offer convenience and a simple way of getting custom molds for industries around the world.

we are also offer Dies casting and blister mold

In Coal-Powered China, Electric Car Surge Fuels Fear of Worsening Smog

Automakers' latest projections for rapid growth of China's green car market have added to concerns of worsening smog as the uptake of electric vehicles powered by coal-fired grids races ahead of a switch to cleaner energy.

Volkswagen AG plans 15 new-energy models over 3-5 years, its China chief told a green car conference in Beijing on Saturday, predicting - like the government - that Chinese production of electric and plug-in hybrid vehicles would grow almost six times to 2 million annually by 2020.

At the same event, BYD Co Ltd's chairman told media that the Chinese automaker's electric vehicle sales would double in each of the next three years.

The government has been promoting electric vehicles to cut the smog that frequently envelops Chinese cities, helping sales quadruple last year and making China the biggest market, the finance minister said at the conference. Less than 1 percent of passenger cars are now new energy, but the pace of growth raises their potential to worsen smog.

A series of studies by Tsinghua University, whose alumni includes the incumbent president, showed electric vehicles charged in China produce two to five times as much particulate matter and chemicals that contribute to smog versus gas-engine cars. Hybrid vehicles fare little better.

"International experience shows that cleaning up the air doesn't need to rely on electric vehicles," said Los Angeles-based An Feng, director of the Innovation Center for Energy and Transportation. "Clean up the power plants."

China plans to convert the grid to renewable fuel or clean-coal technology as part of efforts to cut carbon emissions by 60 percent by 2020.

That will speed the green impact of electric vehicles, said environmental science professor Huo Hong at the elite Tsinghua university. But that goal will be "really difficult to achieve."

Tsinghua's studies call into question the wisdom of aggressively promoting vehicles which the university said could not be considered environmentally friendly for at least a decade in many areas of China unless grid reform accelerates.

China's industry, environment and science ministries, which devise most new energy vehicle policies, did not respond to requests for comment. BYD and Volkswagen declined to immediately comment.

POLICY MISMATCH

To promote new-energy vehicles, the government has offered various incentives in recent years including tax breaks, and set targets such as having 5 million new-energy vehicles on the road by 2020 - more than 8 times the current number.

Authorities in some cities particularly affected by smog have gone further. Beijing and Tianjin, for instance, have exempted new-energy vehicles from limits on the number of new cars granted license plates, and exempted them from driving restrictions that other cars face on certain days of the week.

This month, the industrial Hebei province decreed that all new residential complexes must have car-charging facilities.

In western Beijing, 62-year-old retired truck and taxi driver Zhang Zhijun bought a BYD Tang hybrid last month and plans to trade in his gas-engine Toyota Corolla for an electric car for short rides like taking his grandson to school.

"Right now smog is very heavy in China. This way, if everyone does their part, it will definitely cut down on pollution," Zhang said.

But Beijing, Tianjin and Hebei are all more than 90 percent reliant on coal for energy, Tsinghua's research showed.

Huo and academics point out that, at the very least, the proliferation of electric vehicles pushes more sources of pollution away from heavily populated urban centers.

Whatever the impact, Qin Lihong, president of startup electric automaker NextEV, said cleaning the grid would be the quickest route to clear skies.

"It's much easier for society to make hundreds of power plants better than change the hundreds of millions of cars in thousands of cities," he said.

About us:

We are a company specialized in various plastic injection mould & molding technology stationed here in shanghai ,china. we build company since 1997, our major field of activities is production of steel molds for plastic injection mould and injection molding of plastic parts in variety of designs, material and appliance. Additional service includes OEM/ODM manufacturing .

Plastics in Electronics Components: Technologies and Global Markets

- Analyze current and likely future sizes of thermoplastics and thermosetting polymer markets, broken down by component and by type.

- Learn about the use of plastics in electronic components.

- Identify major material suppliers and key processors.

- Review important new technologies, as well as changes in legislation and industry standards and norms that may have significant effects on markets for electronic components.

Highlights

- The global electronic component totaled 3.6 billion pounds in volume in 2014. This market should reach nearly 3.8 billion pounds in 2015 and more than 4.4 billion pounds by 2020, demonstrating a compound annual growth rate (CAGR) of 3.3% from 2015 to 2020.

- The global thermoplastic market should reach nearly 2.7 billion pounds n 2015 and 3.2 billion pounds by 2020, with a CAGR of 3.8% for 2015-2020.

- The global thermoset market should total nearly 1.1 billion pounds in 2015 and 1.2 billion pounds by 2020, with a CAGR of 2.0% through 2020.

Introduction & Scope

INTRODUCTION

OBJECTIVES

This study focuses on the use of plastics in electronic components. It considers the wide range of thermoplastics and thermosetting polymers (including polyurethanes) that are being used in electronic components found in industrial, automotive and consumer electronics. It reviews the most recent developments in these materials that respond to the changing needs of the markets, and it analyzes the current and likely future sizes of these markets, broken down by component and by polymer type.

SCOPE AND FORMAT

This study covers all electronic components where plastics are used to a significant extent. It concentrates on components produced by injection molding, compression molding and encapsulation. It does not cover wire and cable, films used in capacitors or recording media, or enclosures. The study also identifies major material suppliers and key processors. It reviews important new technologies, as well as changes in legislation and industry standards and norms that may have significant effects on markets for electronic components, and it looks at interpolymer competition.

REASONS FOR DOING THE STUDY

Overall, plastics consumption in electronic components had been growing at rates well above those of growth in gross domestic product for many years. Electronic products have invaded virtually all areas of our personal and business lives, and their levels of sophistication continue to increase. The amount of electronics in automobile control, driver assist and infotainment systems is rising rapidly. Cloud computing is carried out on a massive scale, and now the Internet of Everything is connecting devices as well as people. At the same time, the tendency of many personal electronics to become fashion items has reduced product life cycles, with each new product generation putting new demands – in performance and especially cost – on the materials that go into them. In addition, the increasing visibility of electronic devices, most notably in mobile devices (smartphones and tablets), has been a key driver in pushing electronics companies to use more "environment-friendly" technologies and materials in their products.

About us

We are a company specialized in various plastic injection mould & molding technology stationed here in shanghai ,china. we build company since 1997, our major field of activities is production of steel molds for plastic injection mould and injection molding of plastic parts in variety of designs, material and appliance. Additional service includes OEM/ODM manufacturing . 

Industrial Gases for Plastic & Injection mold Market Worth 6.31 Billion USD by 2020

The report "Industrial Gases for Plastic & Injection mold  Industry Market by Gas Type (Nitrogen, Carbon Monoxide, Carbon Dioxide, Others), Process (Injection Molding, Extrusion, Foaming, Blow Molding), Storage & Distribution and Transportation, End Use - Global Forecast to 2020" The industrial gases for the plastic & injection mold  industry size is estimated to grow from USD 4.89 Billion in 2015 to USD 6.31 Billion by 2020, at a CAGR of 5.24% from 2015 to 2020.

The global industrial gases for the plastic & injection mold  industry is driven by factors such as strong growth in the beverage, automobile, packaging, construction, and manufacturing sectors among others. Advancements in terms of product innovations and technologies in the market are expected to create strong investment opportunities.

Nitrogen to be the largest market segment of industrial gases for plastic & injection mold  industry during the forecast period

Nitrogen is projected to contribute the largest market share during the forecast period. Gases such as carbon dioxide and carbon monoxide have wide applications in the beverage, automobile, packaging, healthcare, and construction sectors. The nitrogen segment is projected to be the fastest-growing market, and is expected to grow at the highest CAGR in the next five years. Nitrogen is widely used in industrial and manufacturing applications for the purposes of purging, inerting, sterilizing, and tank blanketing, and flushing.

Injection molding is the fastest-growing segment due to wide application in manufacturing process

Industrial gases for the plastic and injection mold  industry, by process, are segmented into four processes, namely, injection molding, extrusion, foaming, and blow molding. Injection molding accounted for the largest market share in 2014 and is the most widely used method for processing plastic and injection mold  into end products. The high versatility and application of injection molding makes it the fastest market during the forecast period.

China is expected to attain the largest market share in the Asia- Pacific industrial gases for the plastic & injection mold  industry

China is expected to have the largest market share and dominate the Asia- Pacific industrial gases for the plastic & injection mold  industry from 2015 to 2020. China, the largest manufacturer and supplier of industrial gases for the plastic & injection mold  industry, exhibits high potential growth opportunities. The key driver for this market is the rapidly growing Chinese industries such as manufacturing, electrical & electronics, automobile, and healthcare industries along with the growing construction market.

Speak to Analyst: www.chinamoldmaker.org 

The scope of the report covers detailed information regarding the major factors influencing the growth of the industrial gases for the plastic & injection mold  industry such as drivers, restraints, challenges, and opportunities. A detailed analysis of the key industry players has been done to provide insights into their business overview, products and services, key strategies, and recent developments associated with the market.

What You Need To Know About Plastic Injection Molding

Nowadays, more and more people- along with their businesses -are using plastic injection molding for several purposes in their everyday lives. But, most don’t know what goes on behind the scenes of manufactured products, nor the method used to do it. Plastic injection molding is used to create some of the most prominent things in our lives and it’s important to know a little bit about it.

The first part of the injection molding process includes heating up the plastic until it is soft enough to be injected into a mold. Then, the moving and fixed platens of the injection molding machine hold the molding tool together under pressure as the soft, molten plastic is injected into it. After all of the plastic has been injected into the mold, more pressure is applied from the mold itself to ensure that all cavities are filled. The plastic parts are then allowed to cool and solidify within the mold. Once the plastic is fully cooled and a guaranteed solid, the mold tool separates, releasing it from the pressure it had been using to hold it together. Lastly, air blast, rods, or a plate is used to aid in the ejection of the completed plastic mold from the injection molding tool. This process is then repeated with any other molds that need to be made. From the time the plastic begins to heat to the time that it is ejected as an individual plastic replication of the mold is the entire plastic injection molding process.

Now, you know of the process that goes on to create the manufactured plastic products that you use today. It’s extremely important to know and appreciate, and without it, we wouldn’t have some of the most important things in our world today.

About our company:

We are a company specialized in various plastic injection mould & molding technology stationed here in shanghai ,china. we build company since 1997, our major field of activities is production of steel molds for plastic injection mould and injection molding of plastic parts in variety of designs, material and appliance. Additional service includes OEM/ODM manufacturing

China injection Mold quality control points

1，In the process of mould processing quality control

1. Mold parts processing quality control.

1) for each part drawings, technical requirements, completion time requirements; Did not note tolerances size used 1/2 it12 tolerance grade or match.

2) machining personnel shall be in accordance with the requirements of parts drawing size, and asked after machining self-inspection, and specified on the drawing

Self-check result and date (signature). For measurements, the introspection of artifacts, once found fault inspection the size of the workpiece, the losses caused by twice to punish processors output, and order as soon as possible to complete reproduction of the workpiece.

3) fitter group machining all outside the scope of the cooperation, should be arranged by the workshop processing, finish machining JingJian

Returned to the bench after inspection qualified team, by the fitter leader acceptance, and output by the workshop management personnel registration processing personnel.

4) fitter team internal processing parts, the team leader is responsible for the control of the processing quality, and indicate the likely on the drawings

The size of the changes.

2. The quality control of mold assembly

1) assembly fitter are responsible for the quality of a complete set of mold, fitter carefully check before assembly parts quality (including the materials

Heat treatment, machining quality), for the unqualified parts may affect the whole mold quality, should change in time or reprocessed.

2) fitter carefully crafted in the assembly process, to ensure that the mold assembly accuracy, make it to the design requirements of using

Life, the production efficiency, produce comply with the design requirements of qualified products.

3) after completion of assembly, responsibility fitter mold of a complete set of self-inspection again carefully, to ensure the success of the test qualified, after inspection

Open the mould, fill in test application form, hand in workshop management.

4) workshop staff after receiving the application form to arrange the designer and is responsible for the fitter for mould quality inspection together, sign a release

Try to arrange after see mold.

2， The mold factory quality requirements:

1. Mould installation neat all parts according to relevant requirements, reliable, complete accessories, parts for on-site installation, must have a written procedures.

2. Mold production of products subject to quality inspection, comply with the design requirements or customer requirements.

3. The mould all sports institutions, all should guide sliding flexible, motion is stable and reliable, fit clearance, appropriate and factory processing lubrication.

4. The mold parting surface and all molding surface, factory should make antirust processing. 5. Die appearance and installation dimensions, deal with the following conditions:

1) the edge of the template should be 2 x45 "chamfering, mounting surface should be smooth level off, should not have prominent screw head, pin

Head, burr and injury.

2) the reference Angle of mould should be seal on mould number, there is no lifting and moving mold, rings with screw

Pit.

3) the size of the tooling parts, shall comply with the selected models.

4) separate surface except the guide sleeve hole, pin hole, all the holes in the process of mould manufacturing process, screw hole should be blocked

Plug and parting surface level.

The workshop managers and designers should be the factory mold for detailed inspection, signing after confirm qualified mold certificate, registered fitter output by workshop management personnel.

quality control is very important for our company,Because Product quality is the lifeline of the enterprise

more information www.cnmoulding.com www.plastic-injectionmoulding.com