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Molds for Plastics

1 Fittings
With over 250 plastic molds produced in the past two years for top name producers in the region in ASTM, DIN, and other standards, Sincere Tech has mastered high-performance fittings molds for PVC, PE, ABS and PPT with exceptional success. Typical high cavitation molds, optimized cooling, mechanically CAM actuated and hydraulic oil-free core movements, in addition to robustly built structures all contribute to the economic production of fittings, and an edge over the competition through low cycle times and a drastic improvement in the reliability & life of the mold. 

Crates, Garden Furniture, & large size molds
High-efficiency molds for crates of all sizes and applications including returnable bottles, vegetables, dairy, and other. 

Plastic Moulding and molds for garden furniture, air conditioning, recreational accessories, panels, and appliances

Medical Appliances, Caps & Closures Line 
If you competitively seek to mold a medical part or cap with exceptionally high quality ….Sincere Tech should be your source for engineering advise & tooling ……whatever type….tear-off, bump-off, pull-up, pop-up, flip top, press-on, tamper-evident, fool-proof, dethreaded, whatever shape and form…round, square, oval, oblong, sculptured, irregular….whatever number of cavitation…1, 2…. 24, 48, or even higher….Sincere Tech should be your source for engineering advise & molds….. just ask any of our big list of world-class clientele…

Plastic Molds

Injection-blown articles 
Sincere Tech is the regional leader in single and multi-stage injection-blow molding tooling, part design and system design for PET & Polypropylene. With projects executed with exceptional success for the client with machines such as HuskyTM, SidelTM, KruppTM, ADSTM, MagicTM, Nissei ASBTM, AOKITM, JomarTM, or other PET or PPR production or high-speed machine, Sincere Tech has provided all the required expertise and results no matter how difficult the application. Oval, irregular, bell-shaped, integrated handle, built-in handle.

Extrusion Blow Molds for Containers. 
Optimized cooling, optimized cycle times, reliable design, and competitive prices make Sincere Tech a prime supplier for extrusion blow molding parts and its peripherals.

Services 
Plastic Engineering Services 

Building on its expertise and experience in the different aspects of plastics technology, Sincere Tech offers many engineering services for plastics including functional part design, aesthetic design, plastic rheology analysis, plastic production consultancy, etc.

Automation and Turnkey Solutions
Recognizing the importance of integration in today’s manufacturing world, and utilizing its strong relations with machinery and automation system suppliers, Sincere Tech offers consultancy for turnkey and automated solutions including robotics, specialized systems of production, etc.

Plastic Mold Company

We are a plastic mold company, provide plastic molds and moding service.

the last year, An important customer came to ST Tooling from US, CA, requiring a new servcie palstic mold and plastic molding company.Driver’s Side Airbag Cover in critically short time. Initial parts from productive materials were required in only 4 weeks. Several rapid tooling processes were considered for this project. The PolySteel™ process was selected for the following reason:

  • Tool accuracy
  • Lowest cost
  • Fastest timing
  • Robust process

PolySteel™ is a new polymeric tooling process developed by ST Tooling of Fresno, CA. Tools are created directly from rapid prototype or other patterns. The material is highly loaded with steel (greater than 90% by weight). A very high degree of accuracy is maintained from the pattern due to negligible process shrinkage (.0002 in./in.). The resulting tools have exceptional strength and durability for injection molding applications. 

This major Original Equipment Manufacturer (OEM) had confidence the PolySteel™ process would work for this Airbag Cover project since PolySteel™ had already been proven successful with more abrasive materials requiring higher molding temperatures and pressures (such as ABS and Nylon 40% glass filled). 

Plastic Mold
Plastic Mold



The 12.5″ x 12.5″ x 6 Airbag Cover mold (317mm x 152mm) would normally require 8 separate components, 4 of which are slides. Due to the versatile nature of the PolySteel™ process the tool was produced with a 1-piece stripper plate, 2 core sections and 1 cavity, completely eliminating the need for slides, thus reducing total components by 50%. 

The part used to create the Airbag Cover mold was a stereolithography (SL) pattern. Since time was of the essence, the OEM’s in-house service bureau built the pattern over a weekend. Leather grain texture was applied to the exposed surface of the pattern using a special 2-day process. This greatly reduced the typical lead time required for conventional graining procedures. The PolySteel™ material was molded directly over the pattern without the need for machined inserts. The tool was constructed in a simple welded frame, which replaced the conventional mold base. Holes for the ejection system were molded in place. The characteristics of PolySteel™ made it possible to meet the demanding requirements of the Airbag Cover mold without the need for water cooling lines. Since the PolySteel™ process replicated the grain on the pattern, the parts produced from production intent materials were able to be used for show as well as deployment testing. 

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More than 100 Airbags Covers were molded in the PolySteel™ tool to meet initial requirements. Over the following month, the mold was used for parametric studies by revising the tear seam and changing the emblem embossment area. Modifications of this nature are accomplished quickly and easily in PolySteel™ tools. An additional 225 parts were then produced from three (3) alternate productive materials. 

Even with the premium paid for expedited delivery, the PolySteel™ tooling process still saved the OEM 12% in tool costs and even more significantly 80% in typical timing. This tooling technology played a key role enabling delivery of a new Driver’s Side Airbag Cover in a timely manner for a very important customer. 

Need plastic molds? contact us now

Plastic Molds

Working with plastic molds isn’t always easy, as mold maker at  hyx mold, know. The Plastic mold company offers plastic mold making and plastic molding services for the automotive, electric, home appliance, industrial, food package, and consumer products industries.

The company’s greatest challenge is to design and make the tooling and molds for custom injection molding parts. The majority of the plastic molding parts the company helps to develop are functional assemblies and complex tool actions, thin wall molding, 2k injection molding, over molding etc. 

“Customers expect us to help them reduce manufacturing costs through weight reduction and design for part and mold,” Panziera said. “We’re also expected to reduce development time to market of new products, and to validate design parameters through the use of CAE tools prior to the start of hard tooling.”

Design for automation means that the tools must be rugged enough to use again and again.

The CAE tools include plastic simulation software from Moldflow of Wayland, Mass.

The software enables engineers to reduce weight and to ensure that parts can be molded and can pass validation testing.

“Material reductions of even a few grams can provide significant cost savings,” Panziera said. “Cosmetic issues such as sink, warp, and blemishes can be addressed before tooling is produced, potentially saving thousands of dollars in tool revisions.”

For instance, a General Motors tier one automotive supplier recently approached Axiomatic for help with a troublesome chrome-plated, plastic inside-door handle, he said.

“The supplier had numerous problems with the gate blush and sink marks that only appeared after the parts had been plated. The high scrap rate and numerous tooling changes to attempt to remedy the problem were very costly,” Panziera said.

Axiomatic used Moldflow software to determine the best location, profile, and shape of the gate. The result was a dramatic reduction in scrap rate, to nearly zero, he said.

Want to know more information about plastic molds and injection molding, please go to http://www.plastic-industry.com/

Mold Builder

Mold Builder in America

The American Mold Builders Association, in conjunction with the group’s 30th anniversary in 2003, has announced the establishment of a new Mold Builder of the Year Award. This first annual event offers AMBA members the opportunity to nominate one of their peers or themselves for this prestigious honor.

The Mold Builder of the Year Award was created to recognize outstanding contributions made by an AMBA member. The recipient of the award will be an outstanding business leader, dedicated to the industry, and an active member of AMBA.

Mold builders tend to be ‘behind-the-scenes’ guys, so we want them to step forward and showcase the best of the best of the industry,” says Scott Harris, president of Harris Precision Mold in Tempe, Arizona, and president of the AMBA.

Criteria for eligible nominees can be found on the AMBA website. Nominations can be submitted by filling out the nomination form there, or from a mass e-mailing that is scheduled to be sent to all members of the organization. Three independent judges from the industry will review the nominations. The deadline for submitting nominations is January 15, 2003.

The Mold Builder of the Year will be honored at the upcoming AMBA Annual Convention in Amelia Island, Florida, March 18–23, 2003.

plastic mold builders
plastic mold builders

The American Plastic Mold Builders Association is the largest mold building trade organization in North America, with more than 400 members and 12 chapters in 35 states.go to one of China Mold builders by click https://www.hao-mold.com/

Advantages of hao-mold.com

Alon Zelzion has been named as the new vice president of marketing at hao-mold.com. He brings 23 years of marketing, business development and management experience to this major developer of CAD/CAM solutions for the tooling industry.

“Zelzion is an accomplished executive with extensive marketing and business experience,” says Nitzan Sapir, president and CEO of Cimatron. “His entrepreneurial spirit, his experience in international business, and his background in software in a number of industries make him an excellent choice to lead new initiatives in corporate marketing and business development.”

Through its data-to-steel product philosophy, Cimatron is committed to providing mold, tool, and die makers with comprehensive, cost-effective solutions that streamline manufacturing cycles, enable collaboration with outside vendors, and ultimately shorten product delivery time.

Plastic Tooling Company

Plastic Tooling Company-PTC

PTC, the Plastic tooling company best known for its Pro/Engineer mechanical design software, and Mensch und Maschine Software AG, a European distributor of computer-aided design software, have signed an agreement that allows Mensch und Maschine to become a major distributor of Pro/Engineer and PTC’s next-generation product, Pro/Engineer Wildfire.

For 18 years, Mensch und Maschine has provided computer-aided design solutions and expertise to European businesses through its reseller network. Its most important market is mechanical design, which contributed about half of its 2001 revenue of €146.8 million. Mensch und Maschine plans to have its network of resellers capable of selling Pro/Engineer Wildfire within the first few months of the product’s introduction in early 2003.

Says PTC president C. Richard Harrison, “This agreement is tangible evidence of the progress PTC has made in the execution of our distribution strategy, where we have been working to focus our direct sales force on large accounts and build a strategic, productive indirect channel to reach smaller businesses in the discrete manufacturing industry.”

Harrison continues, “Mensch und Maschine is a market-leading player that will provide additional marketing expertise, infrastructure and reseller influence to help us enhance our sales coverage of the smaller manufacturing companies in Europe. We expect that this will result in an improvement in the revenue contribution from our channel program while lowering relative cost of sales.”

Plastic tooling company in China today is servicing to the world market, if you are looking for supplier that could support your business in plastic molded parts, then you could go find some of plastic tooling companies to support you, we are here to recomend you one called DONGGUAN SINCERE TECH CO.LTD. who is professiona plastic tooling company offer plastic molds and injection molding service over 15 year, go to https://www.plasticmold.net/ to get more infomation

Plastic Molding Company

Plastic Molding Company

Plastic molding is a popular method that is used when manufacturing toys, injections, and other plastic products. In fact, many of the plastic products that we use on a daily basis (like our cellphones) are manufactured by a process called preform molding. in that case if you need and type of custom plastic molding parts then you need plastic mold maker and plastic molding company to support your business.DONGGUAN SINERE TECH CO.LTD will be the best option for you.

In the year 1872, the injection molding machine was introduced; the process that it uses later became knowns as blow molding. This technology proved to be essential in the manufacturing of plastic bottles, and in recent years, the molding industry has seen rapid growth due to a number of technological advancements. Now there are a number of different types of molding machines available to help companies manufacture plastic cap molds, bottle cap molds, bottle closure molds, and more.

Most of the plastic products that preform molding customer uses today have complex shapes. Therefore, to get the optimal shape for their products, they must utilize the services of an innovative and technologically advanced preform molding manufacturer. Using advanced technology enables the manufacturer to provide their clientele attractive shapes for their various products.

plastic mold

plastic mold

The manufacturers who use modern technology for their plastic molds cause less environmental damage; for example, the preform bottle Cap Mold can be reused and recycled. An added benefit to this eco-friendly practice is the reduction of costs, in this way they are able to charge less money for their plastic molds.

When individuals are looking for the best preform mold manufacturers for their plastic products, it is important to look for certain traits. For example, it is essential to give credit to the mold manufacturers who spend a lot of time, resources, and who use the latest technology in order to design and purchase the tools that they need. If that manufacturer is able to provide its clientele with budget-friendly methods and technical expertise, then it is wise to invest your resources in their product.

Another consideration when choosing the perfect preform molding supplier for your needs is experience. If a company has been manufacturing plastic bottle molds or bottle cap molds for over five years, then you can be sure that it is a trusted company and that it is safe to do business with them. A good way to get your hands on this type of information is to check out client reviews and testimonials. In addition, most reputable plastic mold manufacturers tend to provide high quality products at a suitable price. So, before choosing your supplier, check out some of their products to see if it is worth your investment.

Thermoset Compression Molding

Thermoset Compression Molding

Thermoset compression molding is historically the most common method of molding thermosetting resins; it is certainly the oldest, and many existing molds are of this type. Compression molds typically have a single cavity, although dual-cavity and even multi-cavity molds are possible.

A preheated preform is placed in the open mold

As the mold closes, the preform is compressed and starts to flow

The heated mold is held shut until the resin cures …

… then the mold is opened and the finished part ejected.

What characterizes compression molding is the method of charging the mold with resin: the plastic resin is placed directly in the bottom cavity of the open, heated mold, and then the top half of the mold is closed down on the resin under tremendous pressure, causing the resin to flow throughout the cavity until it completely fills the now-closed mold and assumes the shape of the finished part.

COMPRESSION MOLDING WORKS

The compression action itself generates heat, and in conjunction with the heat of the plastic mold, raises the temperature of the resin to the point where a chemical reaction called “crosslinking” takes place. It is this crosslinking that gives thermoset molded parts their characteristic strength, hardness and rigidity.

The heated mold is held closed for sufficient time to ensure that the crosslinking reaction is complete; this is called “curing,” and the length of time required for the cure cycle is almost entirely dependent on the wall thickness of the finished part. The thicker the part at its maximum cross section, the longer the curing time required for a given mold temperature.

Thermoset molding resins typically come in a powder or granulated form. Metering the correct amount of resin (called the “shot”) into the mold is accomplished in one of two ways. One is called “preforming” and the other is called “direct charging.”

PREFORMING
In preforming, the exact amount of raw resin required to completely fill the mold (plus a small excess percentage to allow for squeeze-out) is compressed into uniform “pills” — sometimes called “hockey pucks” in industry slang, because that’s what the larger ones look like. These preformed “pills” of resin are produced in batches prior to molding using machines called, appropriately enough, preformers. Preforms are made in various sizes, depending on the size of the mold.

PREHEATING
Just before use, these preformed pills are warmed up in a preheater — which is essentially an industrial-strength microwave oven — which softens the pill into a pliable, dough-like consistency so that the resin will flow more easily under compression. In the molding process, one of these preformed, preheated pills of resin is placed in the bottom cavity of the mold, and the mold is closed, compressing the softened resin into the shape of the mold. (Exceptions to preheating include Bulk Molding Compound (BMC) materials, which are typically formed in logs or used in bulk and are normally molded cold.)

DIRECT CHARGING
Direct charging is used in situations where the mold cavity is too small, too shallow, or too convoluted, to conveniently accept a preform. In these cases, a measured scoop of cold resin is distributed directly into the open mold cavity.

INSERTS
Metal inserts — electrical contacts, female threaded holes, male threaded studs, bushings, and the like — can be placed in the mold cavities, using holes or locator pins, prior to molding. Under compression, the plastic resin flows around these inserts, molding them into the finished piece. Even though thermoset plastics are machinable to a degree, the judicious use of molded-in metal inserts can often eliminate costly secondary operations and add value to the finished parts.

Metal inserts can be molded into the bottom surface, the top surface, or both surfaces of the finished parts. They can even extend completely through the piece. In cases where the inserts are especially small, or cannot be properly supported within the mold, they can be epoxied in as a secondary operation.

THERMOSET COMPRESSION MOLDING:
ADVANTAGES and DISADVANTAGES

In general, thermoset compression molding is well suited for larger pieces of relatively simple design with large, well-anchored inserts. A properly designed and well maintained compression mold will produce very little scrap, and through the use of preheated preforms, total cycle times can rival those of injection molding, plastic molding company

On the PLUS side …

  • Less expensive molds. Compression molds are generally less expensive than other types, both in initial cost and in maintenance.
  • Tighter tolerances, made possible by relatively small shrinkage. Because of the way direct compression packs the preheated preform into the mold, the result is a denser piece that tends to cure solid to the exact dimensions of the mold cavity, without “relaxing back” to create shrinkage. (Exception: dimensions across the parting line are harder to control.)
  • Less scrap can lower material costs.
  • Low-volume jobs are more economical, due to the simplier process and reduced start-up times. Compression jobs can be cycled in and out of the workflow more quickly, and on shorter notice.

On the MINUS side …

  • Heavier flash than other methods is possible. Deflashing is a secondary operation that may add to both labor costs and scrap loss.
  • Labor costs vs. cure time trade-offs. Labor costs can be reduced by using BMC materials and other cold molding techniques which forego preheated preforms, but the cure cycles will be longer.
  • Parting line thicknesses can vary making dimensions across the parting line more difficult to control tightly.
  • Metal inserts may be flashed, leading to more labor-intensive deflashing and clean up.
  • Deep, small diameter holes are difficult to mold reliably; in general, cored holes should be limited to 2.5 times their diameter in depth.

Typical Applications

Thermoset compression moldings are all around you. From the knobs on your stove to the electrical boxes in a jumbo jet — if it’s plastic, hard, rigid, heat-scratch-and-chemical-resistant, an electrical insulator, and it’s got molded-in metal inserts, and it’s black (or shades of reddish brown) — chances are it’s a thermoset molded product.

  • Aerospace — an aircraft terminal housing is just one example where thermoset moldings provide the excellent dielectric properties, lightweight rigidity, and dimensional stability required by precision in-flight systems.
  • Household Appliances — a blower fan blade for a residential clothes dryer illustrates the ability of thermoset compression molded products to meet critical density and dimensional stability requirements.
  • Industrial Machinery — an adjustment wheel for an industrial milling machine displays the rugged workhorse qualities of a typical thermoset compression molding.

Other Molding Methods

Compare with Thermoset Transfer Molding, which is similar to compression molding, but with important differences.

Compare also with Thermoset Injection Molding, a familiar process in thermoplastics, now equally applicable to many thermoset materials.

Injection Molded Products

Injection Molded Products

Quashnick Tool works closely with customers to develop products which can be molded accurately and economically. Employing SPC, Six Sigma and working toward ISO certification, we supply our customers with injection molded parts that consistently exceed their dimensional, aesthetic and performance requirements. Our staff strives to meet our customers scheduling and production needs and we stand behind our products 100%. Please review the following molded part categories for more information and contact us if we can assist you with your next project.

With our fully equipped Production Plastic Molding department we are able to sample and troubleshoot problem molds, run hand-load and overmolded parts as well as multi-cavity, high production molds. As a custom molding facility we have experience working with a large variety of polymers ranging from standard commodity resins like Polypropylene to more challenging grades of engineering resins such as PEEK and LCP. Over the past 35 years, Quashnick Tool Corporation has been involved in hundreds of projects relating to each of the following fields:

  • Medical Disposables
  • Medical Devices
  • Automotive
  • Consumer Products
  • Electronics
  • Computer & Peripheral Devices
  • Connectors
  • Telecommunications
  • Space & Military
  • In-Mold Decorating
  • Micro Molding

Our emphasis, as directed by Mr. Quashnick himself, has always been quality and accuracy. This is reflected in both the Injection Molds we manufacture as well as the Molded Plastic Parts they produce.

Plastic Injection Molding for the Medical, Biotech and Hightech industries.

For 39 years Quashnick Tool Corporation has developed custom injection molding for the who’s who of technology companies in the greater San Francisco Bay Area.
Knowing what’s at stake when it comes to developing and maintaining quality plastic injection molds and the parts produced is the secret to their continued success. They realize that when companies begin new designs of molded materials, significant corporate R&D, engineering, manufacturing, administrative and support resources are at stake. Any redundant or rework efforts will add cost, delay time –to- market, and may upset medical device trials and qualification.


With this reality in mind they work with you to look as far ahead as possible in foreseeing and side-lining potential pitfalls in a successful molding program. Quality Pros think of it as it “FEMA” in action. They do this specifically by drawing from their 39 years of experience, merging extensive design and materials experience, with state of the art corporate management and sophisticated engineering and project management skills.
Whether you are looking to work with extremely tight time lines, wish to minimize development risks, want to keep manufacturing local in the greater Bay Area, or you are looking to save costs by building tools at a qualified QTC offshore partner, it pays to have a well versed and professional organization shepherd you through the process.
They’ve delivered success for several hundred companies in the greater Bay Area since 1971. They will deliver success for you.

Quashnick Tool Corporation was founded by State Certified Journeyman Tool Maker and past President, Terry Quashnick and his wife Jeanette in 1973. For the first eleven years they specialized in the design and construction of injection molds. In 1984 they added injection molding to the business.

Inducted into the Society of Plastic Engineers Hall of Fame in 1998.

In 2008, Terry assumed the role of CEO/CTO to focus on technical development when Ed Baker joined the firm as President and COO.

After 37 years of operation, QTC remains a custom manufacturer with two divisions and has built a team of versatile and experienced employees to meet any customer’s injection molding needs.

The tooling division specializes in the construction of complex plastic molds built to very high tolerances.  Technology is an important component at QTC and the company continues to invest in the latest machinery and metrology equipment to maintain our reputation for competitiveness and quality.  Also incorporated in the tooling division is one of the most advanced computer aided mold design facilities in Northern California, which utilizes the latest versions of Pro/Engineer, AutoCAD, SolidWorks and SURFCAM.

As the industry has changed, QTC has changed with it, with a focus on clean manufacturing and producing higher volumes of complex medical parts, in addition to custom work. The molding facility currently operates eleven state of the art injection molding presses ranging from 35 to 230 tons across the entire spectrum of resins from polypropylene to engineering resins.

Today, QTC operates using lean business processes, ISO level documentation, six sigma problem solving tools and a total team concept, to seamlessly integrate mold design, mold construction and plastic molding operations, and assure we deliver quality parts to our worldwide customer base.