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Posts Tagged ‘Plastics’

Plastics Directory: a Source for Captivating Products, or Technology for Making Such Products

With its malleability (plasticity) and ability to accept different colors, plastic is a material that can convert even day-to-day utility articles into decor items. And a plastics directory is your one-stop resource for all kinds of highly saleable products (or the technology and equipment needed to make them).

A quick look at some typical plastic products reveals the huge variety possible.

The Compact Disc (CD) in your computer or video player

The jerry can you use to store different kinds of liquids

The kitchen balance you use to measure out cooking ingredients

The plastic film that shows off your products as they are

The intriguing and fascinating range of toys that your children, or you, play with

The sturdy components made with engineering plastic

Replicas that can reproduce an uncanny look of the originals, such as ivory carvings and silk clothing (rayon)

A good plastics directory is your source for products to sell (or use). Or if you prefer to produce the products, the plastics directory’s sections on plastic machineries, equipment and materials could help you locate several suppliers of these, and get competitive bids.

Plastics Directory – A Niche Directory

The discussion in the previous section illustrates how niche directories are particularly valuable for a niche audience. Persons interested in plastics products would find a plastics directory the ideal resource to locate products, equipment and ever services (like consultancy services) they are looking for.

Very often, the directories accommodate only businesses located in specific countries. For example, a UK Plastics Directory might only list suppliers in the UK. This is a way to promote the businesses in one’s own country. In fact, such niche directories are sometimes produced by regional development agencies seeking to promote the development of specific industries in their regions.

Another way such niche directories provide value to their users is through specialized categories. Whereas a general business directory might have a single category like plastics, or a few categories like plastic machinery, plastic products and plastic materials, a niche directory could have more elaborate categorization.

For example, here is one classification system adopted by a plastics directory:

Plastic Films

Plastic Flow Control Equipment

Plastic Hardware

Plastic Injections Molding Tooling & Services

Plastic Materials

Plastic Packaging Machines, Equipment & Supplies

Plastic Products

Plastic Raw Materials & Supplies

Plastic Safety Equipment

Plastic Sheeting

Resins

(Source: http://www.plastics-malaysian.com/ )

It would be evident that with the above kind of categorization, specific users could organize their searching much more purposefully.

One way for the niche directories to add even more value is through how-to articles, market news and other resources of business interest. Such a plastics directory could be a complete resource for those interested in plastics.

Conclusion

A plastics directory is a good example of a niche directory. Such niche directories could provide much greater value to a niche audience than a general business directory. For example, more specialized and elaborate classification, tailored to the particular industry, would help readers to quickly locate the precise products or services they want. Supplemented with how-to articles, market development news, and such resources, these niche directories could add even more value.

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Chinese Markets for Injection Molded Plastics

China’s demand for injection molded plastics has grown at a fast pace in the past decade. In the next five years, both production and demand will continue to grow. This new study examines China’s economic trends, investment environment, industry development, supply and demand, industry capacity, industry structure, marketing channels and major industry participants. Historical data (1995, 2000 and 2005) and long-term forecasts through 2010 and 2015 are presented. Major producers in China are profiled.

This report examines China’s macroeconomic trends, investment environment, injection molded plastic industry structure and capacity, production and demand, end-use market consumption trends, distribution channels and principal industry participants. Long-term forecasts for major injection molded plastics production such as casting mould,mold making,plastic injection mold and demand are included.

Key producers are profiled. Top Chinese injection molded plastics producers are listed in the producer directory section. Most primary and secondary research was done in China in order to access up-to-date government regulations, market information and industry data.

Data was collected from Chinese government publications, Chinese language newspapers and magazines, Chinese chemical industry associations (including Chinese plastic industry associations, local governments’ chemical industry bureaus) and plastic industry publications. Interviews were conducted with Chinese industry experts, university professors, and plastic container producers in China.

Historical data includes 1995, 2000 and 2005. Long-term development trends are projected to the years 2010 and 2015. Economic models and quantitative methods are applied in this report to project market demand and industry trends.

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Rapid Plastics – Injection Molding?S Basics

Injection molding is a manufacturing technique for making parts from both thermoplastic and thermosetting plastic materials. Heated, fluid plastic is injected at high pressure into a plastic mold, which is the opposite of the desired product shape. Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of car.The process of injection molding can be described in four simple steps. These include Plasticizing, Injection, Chilling, and Ejection. Each of these steps is different from the other and the right procedure is required for the successful completion of the total process.

These steps can be discussed as follows:

Plasticizing
IT involves the conversion of the polymer material from its normal hard granular form at room temperatures, to the liquid which is necessary for injection at its correct melting temperature.

Injection
This is the stage during which this melt is introduced into a plastic mold to completely fill a cavity or cavities.

Chilling
It is the act of removing heat from the melt to convert it from a liquid consistency back to its original rigid state.

Ejection
The ejection phase is the last phase where the removal of the cooled, molded part from the plastic mold cavity is done.

Pelletized or powdered materials that are used in injection molding machines are mostly:

o Ethylene
o Polystyrene
o Polycarbonate
o Polypropylene
o Acrylonitrile-Butadiene-Styrene (ABS)
o Nylon

The use of these basic steps in sequence or as a cycle is the process of injection molding done to obtain or manufacture parts. Cycle time usually ranges from 10 to 100 seconds and are controlled by the cooling time of the melted plastic. The melted plastic comes from hard rapid prototype plastic pellets that are fed into the hopper of the injection-molding machine. The pellets or plastic powder is melted inside the machine and then forced into the mold through a nozzle by a long screw within a heated cylinder. It is the most common method of production, with some commonly made items including bottle caps and outdoor furniture. Injection molding typically is capable of tolerances.

Plastic molding applications are used in medical field like components for blood analyzer equipments, heart pump parts, orthopedic devices and custom knee braces. In automotive engineering it is used for mechanical levers, gears, gaskets and switches. It is also used for aerospace, automotive, avionics and computer components.

Rapid Prototyping – EMS USA provides rapid prototype services, such as Stereolithography (SLA), rapid tooling, and rapid manufacturing.

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Machine Vision Applications in Plastics Injection Molding

In the manufacture of consumer products, quality control is of utmost importance. In most instances where manual processes are involved, the individual who operates the machinery also performs this task. In injection molding, for instance, this means ensuring the correct orientation and quality of print on the manufactured parts and components. In manually operated equipment, this inspection process presents a challenging task because often, after prolonged hours of work, fatigued operators will insert labels inside the molding dies in improper orientation, resulting in rejected parts. In other cases, because of the heat in the molding process, if there is excess ink on the labeling equipment, the prints may be smeared or distorted. Machine operators occasionally miss or overlook quality issues. To alleviate this inspection and operation problem, it is now possible to incorporate vision systems which will ease the inspection task for the operators, allowing them to concentrate more on the manufacturing process. Vision systems provide means by which continuous and autonomous inspection can be achieved during production.

Computer vision techniques are increasingly being used as alternative methods to conventional inspection and monitoring applications, due to their simplicity and ease of set-up, relative insensitivity to ambient noise, noninvasive means of gathering information on objects without contact, marking or specimen preparations, and the potential for online applicability.1″3 Machine vision has continued to play a major role in the integration of automated manufacturing, both from a quality and inspection perspective to more advanced applications such as motion control and robot guidance. For example casting mould,mold making,plastic injection mold etc.The role of machine vision in providing solutions to manufacturing automation has been recognized by both researchers and engineers in industry.

In the plastics manufacturing industry, vision applications have been used mainly to inspect the quality of molded parts, especially for missing features or badly formed sections. Although fairly automated, the plastics molding industry still has a large component of its operations carried out manually, especially for medium- and low-volume rates of production. For instance, the placement of print template or metallic parts to be included in the finished product is still done manually. Under such circumstances, it is possible to have a wrongly inserted print template which would result in the rejection of the part.

In some cases, due to process variations, a particular plastic part may posses a smudged or faint print. These latter quality problems are often not easy to detect in the processing of plastics. In this paper, the application of a smart vision system in the automatic detection of poor or improperly oriented print templates is presented. The method used to detect improper orientation is based on edge detection and feature identification. More advanced algorithms like segmentation, template matching, and character recognition are utilized for ensuring proper print quality.

To achieve machine vision successfully, and implement the use of computer software, the viewing area must be represented in digital form.The purpose of image acquisition therefore is to capture the optical data and change it to a form that will facilitate convenient and efficient processing using a computer. An image is typically embedded within a viewing area covered by the video capturing mechanism or sensor. The most common type of capturing mechanism is the charged coupled device (CCD). When a light source hits an object, it is reflected to the sensor through appropriate lenses. The photons cause electrical charges to be created in the CCl), thus generating analog signals on a 2-D array. The intensity of the charge at each discrete point in the 2-D array is proportional to the photon energy impinging on that point, determining the brightness or intensity of the light. Therefore a typical optical image system is a continuous 2-D function, h(x,y) whose value at any pair of spatial coordinates represented by the Cartesian coordinate system (x,y) is the intensity of light at that point. The continuous function h(x,y) must be quantized (or digitized) so that it can be easily processed by computer.

The most common method of digitization is a combination of spatial and amplitude quantization in which the viewing area is divided into a matrix of m by n cells or pixels: m and ç are integers. The image is sampled at these discrete points in the viewing area. Each pixel is then assigned a numerical value that is a digital representation of the initial analog value. h(x,y). through the analog-to-digital (A/D) conversion system.The numerical value will depend on the bit resolution of the A/D converter which in turn determines the number of gray-scale levels in which the image can be represented. Therefore the new image data, I(m.n). will have values between O (dark or lowest intensity) and 2^sup r^-l. where r is the bit resolution of the A/D converter.The acquired image must then be filtered to remove any noise, and enhanced for analysis.This stage is known as processing. There are five common types of operational approaches for primary processing of pixels.

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Plastics Injection Molding

We are agents for a variety of Hong Kong and China owned factories.

Our primary business is plastic injection tools and moulded parts.  This part of the business has grown very rapidly during the last 2 years and we have now formed a joint venture with our China based toolmaker to provide a more complete service in-house; toolmaking, moulding and assembly.  

For plastic components, our significant benefits include:

low tooling cost,

very quick turn-around time with an average job taking 35-40 days for the first samples,

both toolmaking and moulding done in-house,

our own assembly factory provides the facilities to do light assembly of plastic and metal components, specialised packaging and other value added services.

Because of these benefits, we have been able to assist many customers by helping them get their new products to market quickly and economically.

For some other customers, we have made single cavity trial tools to allow them to test a concept of a new/complex product before they proceed further with multi-cavity tooling.

While our name is Short Run Plastics, we do much much more than this and many of our plastic moulding jobs are of significant volume.

In addition to the plastics, we also offer a broad range of metalwork and other components and services as listed in the menus above.

 We are based in Hong Kong and currently supply customers in Australia, UK, Austria and the USA.

Our suppliers are all located in southern China, typically within 3 hours travelling from Hong Kong. 

If you are looking for something that is not listed on our web site, please do not hesitate to contact us and we will give you a prompt reply as to whether we can assist you or not.  We concentrate on southern China where most products are available but not all.

“Micromold, Inc. specializes in small, intricate precision plastic and metal injection molding for a variety of applications spanning numerous industries. www.micromoldinc.com Please take a moment to browse our web site. If you have any questions, special requirements or would like to request a quote, please call us at (951) 684-7130

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