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Injection Molding (574) 272-3733
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Tag Archives: blow molding

Accurate Estimate for Plastic Molded Parts

How To Get an Accurate Estimate for Plastic Molded Parts

Accurate Estimate for Plastic Molded Parts

Are you a developer, designer or inventor of products that requires blow molded or injection molded plastic parts? Do you think you are ready to bring your new idea to market? Are you looking for a price quote for blow molding or injection molding for your new product?

SPI is regularly contacted by developers, designers and inventors, who’s products are at varying stages of development. More sophisticated and experienced customers may have 3D CAD files or prototype molds built before calling us. Some customers may have 2D drawings or a homemade prototype mocked up. While, still others bring only sketches or concepts. We have examples of each maturing into successful product launches.

While the appearance of the product or the visible parts may be well thought out, the function, material and plastic molded part design requires a great deal of exploration. Below, we discuss some of the design questions we consider to deliver Quality Parts at a Fair Price.

We have specific questions that need answers before SPI can provide an accurate estimate on part pricing. We look at ways to help design for ease of manufacture at both the part design as well as the tool design. Producing a clear and thorough estimate for plastic molded parts design and development requires a great deal of communication and expertise.

Before you are ready to manufacture your idea, these questions are important to consider:

What is the end use of your product?

  • Will the part be exposed to chemicals?
    If a product is going to be exposed to bleach, or ammonia or other chemicals, there are specific resins that we will recommend to used that will ensure the integrity of the plastic part over time and use.
  • Will your product hold food or beverages for human consumption?
    There are specific guidelines required for food safe storage products. Because of the stringent guidelines, not all injection molding or blow molding companies offer food safe plastic solutions.
  • Will your part be exposed to extreme temperatures or other environmental conditions?
    These considerations will allow your molder to offer recommendations of resins and special additives that may be used to allow your part to function under extreme conditions.

Specific Design Elements will determine best processing technology for Plastic Molded Parts

  • What are the dimensions of your plastic molded parts?
    The size and annual demand of your part will dictate which plastic molding process is required. SPI can help you determine the best processing technology for your product. Typically, small, complex parts such as handles for tools or pens are ideal for injection molding. Hollow objects such as bottle and beverage containers are best suited for blow molding. Where does your product fit? We can help.
  • How complex is your part? Will your part need to be flexible?
    Is your part a simple rectangle with one notch that will connect with another part? Does your part have multiple levels, notches, clips or bellows? Does your part start large and get progressively smaller? Do any elements of your part need to move or be removable? Is a portion hard, while another component pliable such as a clip that must be squeezed into a hole to later expand? The complexity of the design will dictate the type of material, time needed for the mold development and tooling.

What materials are best for your plastic molded part design?

  • Which polymers or resins are best for your product?
    If you are not familiar with the many types of plastic materials on the market, a qualified plastic molder can help you make the best selection. Once a molding engineer knows the end use of your product, the size, quantity, and processing technology, they should be able to offer options for the best material selection for your plastic molded parts.

As you can discern from the many questions posed above, there are many variables that will determine the best solution to manufacture, assemble and deliver your product. The manufacturing company you choose should be a partner in the success of your product. Give SPI Blow Molding or SPI Industries a call, we look forward to partnering with you to help launch your new product. We will support your success by delivering Quality Parts, On Time at a Fair Price.

New press for full service plastic parts manufacturer

SPI Industries Blow Molding Division Invests In New Equipment To Increase Capacity And Processing Capabilities

New press for full service plastic parts manufacturer

Leading Michigan | Indiana molder and full service plastics parts manufacturer, SPI Industries, has increased its capabilities significantly and upgraded its technology for prototypes and production with the purchase of a new press.

spi-blow-molding-pressThe new Impco B30 Press has been installed at SPI Industries’ manufacturing facility in Coloma, Michigan, and will provide an increase to capacity along with an increase in production speed. The installation of the new press with 5 lb accumulator, twin 2.5 lb heads, with manual and auto controller is part of SPI Industries 2014 major expansion project. Since the completion of a constructed 6,000 sq ft warehouse, SPI Blow Molding has stabilized and grown.  With increased demand for plastic manufacturing in Michigan and Indiana and throughout the Great Lakes Region, installation of the new press will allow SPI to keep up with increased demand.

From product and tool design, to shipment of finished goods, SPI is a full service plastic parts manufacturer poised for continued growth. By increasing its press production capacity, SPI’s customers will benefit from faster turn arounds and increased production quantities. From small runs to high volume injection or blow molding, SPI continues to be a good fit for a large variety of product developers.

SPI Blow Molding Engineer, Nick Kraus, said “By investing in the latest technology we are increasing our flexibility and production capabilities, along with automation for larger quantities. The new machine will work alongside SPI’s existing machines on the production line to significantly increase our volume and capacity”.

SPI Industries is a leading full service plastic parts manufacturer with blow molding and injection molding capabilities.  SPI processes basic polypropylenes and ethylenes to the increasingly popular, and difficult to master, clear polycarbonates. Providing high quality manufacturing services including prototype and pre-production of molds, product assembly, storage, and shipping, makes SPI the complete solution for plastic parts and products. The company designs and assembles molds for a wide range of customers in many industries including appliance, outdoor, recreation, hardware, healthcare, agricultural, furniture, safety and food storage.

For more information on how SPI Industries can help you as a top choice, full service plastic parts manufacturer and product fulfillment experts, visit moldedparts.com or call SPI Blow Molding at 269-849-3200 or for Injection Molding call 574-272-3733.

Made in Michigan – Oversized Blow Molded Plastic Tooth

Made in Michigan Art and Parts

Did you read about the oversized blow molded plastic tooth design that was created for an art installation? Did you know if was made in Michigan? SPI Blow Molding, Coloma, Michigan constructed the teeth for a toothquake. The toothquake resulted from the Tooth Fairy choosing to relocate from her gold dome in the sky to Northville, Michigan. IN case you missed it, the toothquake incident occurred during the Arts & Acts Celebration in Northville, Michigan on June, 17, 2016.

In advance of the celebration Dr Demray and his team researched blow molders from all over, including China. Thankfully, their research led them to SPI Injection Molding who then lead them to their sister company, SPI Blow Molding. Upon meeting the owners and engineers at SPI Blow Molding Dr, Demray and his team knew if they were going to get their oversized blow molded plastic tooth produced, SPI Blow Molding was the shop to do it. After the meeting Dr. Demray affirmed, “What great people” and a wonderful relationship was formed.

The Made In Michigan Toothquake Was a Success

Because the oversized blow molded plastic teeth were made in Michigan the art installation will be a significant addition to the Buy Michigan Now Festival to be held in Northville August 5th-7th. The structure is schooled to be in place for viewing at 371 E. Main St. – Northville, MI for the annual 4th of July parade, during the summer long Friday night Concert series in Town Square, for the Great Lakes Food, Art & Music Festival, the Heritage Festival, October in the ‘Ville and the Salute to Summer Festival. The Acci-DENTAL Masterpiece will come down in November, 2016.

The Acci-DENTAL Masterpiece is the cornerstone of an 8-month public awareness campaign focusing on children’s dental health. Dr. Demray is committed to educating parents about the importance of limiting sugar – exposing foods that have high hidden sugar content plus the importance of good oral hygiene… brush 2 x a day for 2 minutes and visit the dentist 2 x a year. This practice will contribute to a chid’s overall good health. In addition to the 3,333 teeth on display – Dr. Demray asked SPI to make 1,111 more – for an art exhibit to be held in February, 2017 – Children’s National Dental Health Month. Beginning July 1st parents, educators, heath care providers and anyone with an artistic flair can donate money to acquire a tooth,design it, return it temporarily for the exhibit and a chance to win. The suggested donation is $20. Details will be available are at toothfairyoverstock.com. A portion of the proceeds will go to the University of Detroit Mercy (UDM) Dental School Community Outreach Program. UDM has a mobile dental clinic that can go to the children, if they can’t come to the dentist.

SPI Industries is proud to have been a part of Dr. Demray’s life mission to share the message of preservation to children early in life. If you have a plastic product or part that you would really like to have made in Michigan and it needs blow molded please give SPI Blow Molding a chance to review the scope of your project. We pay attention to all of the details and design each plastic piece so each molded cavity is filled and will meet or exceed the highest quality standards and tolerances. Give us a call today.

AcciDENTAL Masterpiece – New Product Inventions as Art

New Product Inventions as Art Blow molded Plastic Teeth

At SPI Industry molding facilities we are fascinated with the creativity and ingenuity of new product inventions.  Product developers create new designs of existing products as well as completely new products that are designed to make life easier, more efficient, safer, or more attractive for everyone. We see all new product inventions as art!

Recently, we received the most unique new plastic molding product request yet. SPI Injection Molding and SPI Blow Molding have produced a full gamut of new product inventions from plastic game pieces, plastic home decorations, plastic parts for appliances, molded parts for healthcare, and many more but this new plastic product concept was a first.  It wasn’t too unusual when the SPI Injection plant in South Bend, Indiana received a request to produce a large plastic tooth. What was unusual was the story behind the tooth.

plastic blow molded teethNew Product Inventions as Art Installations

The over 3000 molded plastic teeth were needed to create a toothquake! The toothquake was represented in the form of a 23’ x 26’ wide waterfall from the second story windows of an old Victorian that is home to the dental office of Dr. Demray. The tooth quake, we learned, was a result of the seismic activity that arose from the relocation of everybody’s favorite childhood messenger, the Tooth Fairy. The Tooth Fairy was staying at Dr. Demray’s offices temporarily while her new warehouse was being constructed. As each night passed, the increase in children’s teeth could no longer be contained and caused a toothquake Friday, June 17, 2016.

Dr. Demray was the most obvious choice when the Tooth Fairy was in need of temporary living quarters. Throughout his over 40 year career Dr. Demray’s mission has been to educate kids about good oral care. Demray’s commitment to share the message of bone preservation and dental care to children is also demonstrated in his cast of characters such as Betsy Floss and Miss Ginger Vitis. These characters participate in parades and school presentations sharing the importance of good oral care for kids. Ever seeking new ways to bring dental care education to the forefront, Dr. Demray decided an art installation of thousands of teeth in a cascading waterfall from his second story offices would be impactful. As a long time Art & Acts supporter, Dr. Demray planned the art exhibit reveal for the opening day of the 2016 Northville Arts & Acts celebration.

When the concept was conceived Dr. Demray and his staff hoped the teeth would be made in the United States. When Dr. Demray’s staff contacted SPI Industries they called SPI Injection Molding plant in South Bend, Indiana. After a short discussion it was determined SPI Blow Molding plant in Coloma, Michigan would be the best approach for the production and molding of the plastic teeth.

SPI Blow Molding understood the teeth would be used to help educate kids on the importance of dental care. The SPI team quickly learned their efforts would also be paramount in the relocation of the Tooth Fairy to Northville, Michigan. This was no ordinary plastic tooth to be used in dental displays or for training for the dental industry!

Fulfillment of the order in time for the Arts & Acts Celebration in Northville set to begin June 17, 2016 was a fun and rewarding experience for the SPI Industry team.

Do you have new product inventions, art installations or even a new twist on an old product that needs attention to detail and experienced engineers to construct? Give SPI Injection or SPI Blow Molding a call today. We’d love to sink our teeth into it.

Read more about how Dr. Demray’s future plans for the teeth to benefit dental care awareness in future blogs.

Benefits of Thermoplastic Elastomers for Injection Molded Goods

Benefits of Thermoplastic Elastomers

Also referred to as thermoplastic rubber, thermoplastic elastomers (TPE) have become increasingly popular for a wide spectrum of products and applications. Below we cover some of the benefits of Thermoplastic Elastomers and how they have changed the look and feel of many products on the market today.

Consider household and personal care items you have purchased recently. Hand held goods for personal and industrial use such as tools, utensils and toys, that are manufactured with TPEs have soft, smooth handles that make gripping much more comfortable.

From toothbrushes, to spatulas, to screwdrivers and new rubber ducks, many new products are manufactured with this long lasting plastic and durable rubber combination. The tactile feel of thermoplastic elastomers is just one of the popular benefits to end users.

The speed and the ease of processing for plastic injection molding and plastic blow molding also makes it a popular choice for manufacturers and molders. Thermoplastic elastomers can be used in countless extrusion and injection molded applications. When compared to traditional resins, thermoplastic elastomers can be molded in shorter cycles to allow for quick turn round of molded goods.

TPE is also a solution for products that need to perform in a variety of temperatures including plastic products that will be exposed to the outdoors.

ADVANTAGES and BENEFITS OF THERMOPLASTIC ELASTOMERS INCLUDE:

  • Processing ease and speed
  • Design flexibility
  • Lower fabrication and production costs
  • Lower energy consumption
  • Resistance to solvent and abrasion
  • Resistance to weathering
  • Improved product performance
  • Shorter cycle time
  • Lower part costs per finished piece
  • Broader range in product density
  • Product consistency
  • Environmentally Friendly – recyclable scrap
  • Resistance to heat and cold
  • Can be injection molded, blow molded and thermoformed

These benefits of TPEs are just some of the reasons SPI Blow Molding and SPI Injection Molding recommend thermoplastic elastomers for a wide range of products and part design applications customers bring to us. Molding custom plastic parts with top grade TPEs that can save time and money as well as stand up to seasonal climate change is important to our customers.

Do you have a product or part that could benefit by incorporating thermoplastic elastomers? Give us a call today. SPI Injection Molding and SPI Blow Molding experts will consult with you and your team to determine if thermoplastic elastomers could save you time and money on your next part design project.

molded plastic parts manufacturing 3D prototype

Understanding Molded Plastic Parts Manufacturing: From Concept To Fulfillment


Molded-Plastic-Parts-Manufacturing-3d-prototypeWhen you’re looking to design a plastic part or entire plastic product, the process generally follows a simple series of steps. However, the method of production you end up using may be any one of several which is determined by the geometry of the part and the functional requirements placed upon it. It’s important to understand molded plastic parts manufacturing.

Fortunately, the steps are pretty straightforward once you understand the sequence of events needed to take a project from an initial idea to a final part design and manufacturing process. Below is a simple road map to consider and some examples of a couple of the most common molded plastic parts manufacturing methods.  Go from initial design to a completed product.

1. Coming Up With A Design 

The first step is coming up with a design for your plastic molded part. This can begin with something as simple as a sketch on the back of a napkin. Your initial design should ultimately incorporate enough detail to have an engineer draw up a 3D Model of your proposed plastic part. This is the beginning point from which you will make all the changes and refine the initial ideas into a working representation of your parts. Also from this drawing you may want to get an actual prototype built.

During this phase it is very helpful to work with a design team, which generally includes engineering, sales and manufacturing technical expertise, to assist with finalizing your design and preparing it for the next phase of the process. It’s important to define what type of testing needs to be done to prove out the feasibility of your part design and functionality.

2. Determine the molding process to be used.

injection molded plastic parts

Screw Driver Set — Tools/Hardware

blow molded plastic bellows

Bellows

During this phase you’ll need to decide which type of molding method will be best for your product. The type of plastic molding process selected will depend upon your initial design, quantities needed and overall functionality of the part. There are several plastic molding processes available.  Five of the more common general broad categories are Injection Molding, Blow Molding, Rotational Molding, Extrusion Molding and Thermoset Molding.  Each of these processes have more specific sub groups of processes within them.  The general category is all you will need at the beginning of your project. From these categories you will quickly narrow to the primary molding process most appropriate to your part.

Two of the most common forms of molding plastic include blow molding and injection molding. Injection molding is used to produce parts made with a simple open and close function of the mold. Wall thickness and close tolerances can generally be held more consistent with injection molding than blow molding.  Blow molding is used to produce hollow plastic parts and can accommodate unusual shapes.  Both injection molding and blow molding can use a very wide range of resin materials that exhibit a similar wide range of physical properties, both visually and to the touch.  Impact strength, flexible toughness, pliability, and many other characteristics can be achieved by both injection and blow molding.

3. Prototype Your Design

During the prototyping phase, if your budget allows, you’ll develop a plastic prototype that will resemble the final molded plastic part. The plastic prototype may be created using rapid prototype resin printing, soft tooling, or use single cavity pull-ahead tooling.  There are many prototype processes available today.  The design team will determine the best fit for your project.

The budget for your project will also influence the number of times you can afford to go back and forth between your mock-up design and initial prototype. You want to keep the number of iterations to a minimum.  You will be working closely with the designers and product engineers at this stage.  The manufacturing team will play a large role in guiding what can and cannot be molded using the various plastic molding technologies.

Once you’ve finalized your prototype you’ll move forward to getting the final mold designed for your plastic part or product. You will now be working with tool design engineers to determine the most appropriate way for your part to be arranged in the actual tool, also referred to as the mold.  This process should, if at all possible, include the manufacturing technical team to determine how a tool, or mold, should be designed to run properly in the molding equipment from which the part will ultimately be produced.

4. Manufacture Your Item

The plastic manufacturing company you use to produce your final plastic part will depend upon many factors.  The type of molding you’re going to use for your final product, such as size of part and annual projected quantities will lead you to the group of processors for consideration. Most manufacturing facilities have specific specialties at which they excel.  Some plastic molding companies do just the part manufacturing.  Others do secondary assembly.  Some manufacturing companies take the process all the way to finished goods.  Fulfillment including packaging and shipping is not available from all molded plastic part manufacturers. You will also want to discuss the volume of parts each plastic manufacturer can handle. Small plastic manufacturing plants may not be suited well for large volumes.  Others specialize in short run, highly technical molding.  SPI Blow Molding is one of the Custom Industrial Molders capable of very difficult challenges.  We range from high volume parts for the agricultural industry to low volume parts for the Medical Industry.  Large tanks for the recreational vehicle industry to small injection molded parts for the electronics industry. SPI Industries’ injection molding resume covers a very diverse range of products from plumbing fixtures to freight securement systems.

Early discussions with potential manufacturers about volume, turn around, types of plastic resins available and fulfillment is highly recommended. It’s important to work with a plastics manufacturing facility that has experience producing similar style plastic parts, or is proficient in the style of plastic molding your product requires. You will also want to consider if you simply need parts or if you need the project handled from concept to completion. You may consider location of a plastic molding facility. SPI Industries and SPI blow molding are located in the South West Region of Lower Michigan and North West Region of Indiana. SPI Plants produce plastic molded parts for companies located in more than simply the Great Lakes Region. Our customers are located throughout the country.   Depending on the needs of the customer, location is not always the most important criteria.

5. Package The Goods

Once your molded plastic parts haplastic product fulfillment. products in boxes ready to shipve been produced they may then be packaged and delivered to your facility for assembly and further distribution, or could be delivered directly to your customers.  Discuss in detail your overall need for assistance with any and all steps in the manufacturing process.

Determine the role of your molded plastic part in the overall production of your finished goods. For instance, if the molded part is just one of many components and requires additional assembly or further steps in the production process, a decision must be made as to who will do the additional work. It could be the molder or it could be you as the customer. Talk to your plastic parts manufacturer about assembly capabilities offered. Secondary operations are now offered by most plastic molders. SPI Industries and SPI Blow molding offer assembly and final processing for several customers.  From single part production to total contract manufacturing and fulfillment, whereby we ship directly to your customers from your orders supplied daily.

If the molded plastic part is a standalone product you’ll be able to immediately distribute the parts to your customers. This is generally not the case.

Some manufacturing facilities will handle all of the shipping for you, while other facilities will simply deliver the finished product to you, and you will have to handle the delivery and shipping to your customers.

If you’re ready to make a mock-up design, a plastic prototype, or have a question about the manufacturing process, get in contact with SPI Industries or SPI Blow Molding today. We can help guide you through the entire molded plastic parts manufacturing process.

How To Make A Plastic Mold For Plastic Products and Parts

make a plastic Injection mold for plastic logistic loadbars

Injection molded plastic logistic load bars

Most people within the plastics industry are familiar with creating a mold for plastic products. Or, at least have a general understanding of the process that goes into it. However, some general confusion still exists with product designers, engineers, and other professionals about the ins and outs of the process. There are a number of methods to make a plastic mold for products that will be used for manufacturing multiple quantities of products. Each method will take different amounts of financial investment and time. The steps below will get you moving in the right direction to create your very own plastic mold.

1. Determine Quantity

What’s the quantity of plastic products you’ll be producing? The number of parts and custom plastic pieces you need will determine the type of molding you use, and the manufacturer you work with.

Most manufacturers require that your entire build be at least 100,000 parts or greater. If this number is too high then you may have to shop around until you find the right manufacturer who is willing to do the job for you. Contact SPI Blow Molding or SPI Industries today to discuss quantities, larger plastic blow molded pieces or plastic injection molded pieces can be produced at lower quantities and still be cost effective.

2. Your Budget

What will your budget be for this plastic mold? Your budget for your project should include the design and creation of your mold, as well as future modifications.

Your budget can also influence the method of plastic molding you use, as some are cheaper than others. Also, the more complex your overall design, the more expensive the process is going to be.

3. Overall Size and Design

The type of plastic molding your project will require will be determined by the size and design of your product. You can also adapt your design to use a specific plastic molding process. For instance, when using injection molding you’ll generally have to have a smaller design. While, blow molding is usually used to create products, such as, containers, tubes and bottles.

4. Project Materials

Your project design will influence the materials and types of plastics that need to be used. Sometimes, designs will have a specific material that needs to be used for the product to function, while other times the materials can be more flexible.

Make sure you speak with your manufacturer to ensure you’re using the right material for the job.

Plastic Molding Methods Available

There are a variety of plastic molding methods, which can be used based upon your unique project specifications.

make-a-plastic-mold-blow-molded-bellows

Blow molded plastic bellows

The most commonly used methods to make a plastic mold are:

  • Injection molding
  • Blow molding
  • Compression molding
  • Gas Assist Molding
  • Film Insert Molding
  • Rotational Molding
  • Thermoforming

By going through the process above you’ll have every specification you require to build the perfect plastic mold for your product. This isn’t a process you’ll want to rush, as a simple design flaw can have you starting the entire process again from scratch.

If you’re ready to make a plastic mold or product, or have a question about the process, contact SPI today. No question or project is too challenging for our team! We can help to guide first time product inventors through the plastic molding process, or implement a unique solution for a product redesign that your are considering.

Difference Between Injection Molding and Blow Molding

Difference-Between- Injection-Molding-and-Blow-MoldingMost people in the plastics manufacturing industry are familiar with both blow injection molding and blow molding these days. However there is still some confusion by product designers and engineers new to the industry about the difference between injection molding and blow molding . The blow molding process has become a standard for specific applications and understanding the differences between these two plastic molding processes can save design, prototyping and production time. This of course results in money savings and increases the speed of completion and delivery of your plastic part.

There are several significant differences between injection molding and blow molding:

  • manufacturing process itself
  • tolerances and margins of error
  • design considerations
  • role of the process for intended result

Main difference between injection molding and blow molding:

  • Injection molding – produces a part that is solid such as a reusable coffee cup lid
  • Blow molding – produces hollow parts such as water bottles

The blow molding process can produce plastic parts with very complex shapes. However to achieve this the wall thickness may vary from place to place depending on how much the material has to stretch when it is being blown. The thickness of a plastic part created through injection molding is determined by the relationship of the mold and the core.

You will be farther ahead if you are able to determine the best molding process for your plastic product in the product development stage. 

Be prepared to answer a lot of questions from plastic mold engineers:

  • How is your plastic part going to function?
  • Is it a stand alone item?
  • Is it a part that connects to other parts or works in tandem with other parts to achieve a result?
  • Does it need to pivot, move, expand, condense?
  • Is the weight critical to the function?
  • Will the part need to withstand extreme levels of cold or heat?
  • Does the item need to adjust to specific pressure levels or PSI?
  • Will the part hold fluids?
  • Does it need to be food safe?
  • Does it need to be flexible or does it need to be solid and rigid?
  • What length does the part need to be, width, depth?

Answering these questions when designing and manufacturing any item is good a idea. With items requiring plastic molding the large variety of plastics to choose from, the importance of accuracy, and the difference between injection molding and blow molding it’s best to determine these answers as soon as possible. When one millimeter size difference can make the item usable or unusable for its intended purpose, accuracy and creative solutions are required. That’s why we have engineers, right?

Custom Plastic Molding Solutions

Because of the many variable in producing molded plastic parts, nearly every part we produce requires a custom solution. Engineers review all variables based on the end use of the product.

Variables to consider in Molded Part Production:

  • type of plastic used
  • flexibility or strength
  • psi pressure rate required
  • withstand temperatures levels – hot or cold
  • wall thickness
  • product dimensions

Once these variables are considered the whole process will go much smoother and quicker. The use of 3D printers in the prototype stage helps to reduce time too. Designing molds and fine tuning them to perfection can take a few tries but once complete production can begin.

When injection molding is determined to be the best process for your plastic part once you have an approved mold you’re practically golden. The injection molding process begins, the product is produced and there is very little concern of production issues with the injection process.

Therein lies another difference between injection molding and blow molding. In the blow molding process getting the mold perfect is only part of the battle. During the blow molding production process there are many variables manufacturers must pay attention to. The iterative nature of the blow molding process lends itself to production variables.

Periodically checking the production line is important for quality control. If the plastic is stretched too much small pin holes or cracks in seals can result. Checking for wall thickness uniformity to ensure they are within the tolerances needed for the part to behave as it is intended is also critical. As an example, a plastic bellows is made to collapse when pressure is applied and then expand back to it’s original form once pressure is released. Consistent wall thickness helps the bellows to function correctly. If the plastic bellows collapses on one end faster than the other because the wall is thinner your plastic part may wear out quicker and may not function smoothly. Having sold process control systems in place will produce consistent parts with high quality function.

Blow Molding Production Concerns:

  • pinhole leaks
  • leaking seals
  • flexibility or strength
  • velocity or pressure of blown air
  • speed of the mold closing
  • process temperature
  • wall thickness
  • poor function
  • consistent product dimensions

You can learn more about the various plastic molding processes that are applicable to your product or new invention at Plastic news.

Do you have a new plastic product invention and you aren’t sure about which plastic mold process is the best solution for your item? Give SPI a call today, our engineers love a challenge! We will help guide you in the most appropriate and cost efficient plastic molding solution for your unique requirements.

SPI Blow Molding Breaks Ground Expands Fulfillment Services

SPI Blow Molding expansion - fulfillment services department  Coloma, MI, SPI Blow Molding LLC, a custom blow molding company is increasing building capacity to implement fulfillment services.

SPI Blow Molding is the sister company to SPI Industries, a custom injection molder in South Bend, Indiana,

The expansion is taking place in two phases. The first is a smaller 2,400 square foot storage building meant to house fixtures and support equipment to the blow molding and fulfillment functions. Construction of this initial phase began in October of this year and should be completed by mid-December.

The second phase, which will be connected to the northwest corner of the current production plant, will be 6,000 square feet. Its primary uses will be secondary assembly, warehousing of work in process and finished goods as well as providing additional capacity for customer supplied components. All of these functions provide added capacity to perform complete fulfillment services for SPI’s valued customers. SPI hopes to begin construction on the larger structure during the spring of 2015.

When both phases have been completed, SPI Blow Molding will have enhanced its ability to mold, assemble, box and ship products to their customers. Products can be fully assembled and drop shipped to end users. Companies can then choose to have blow molded plastic parts shipped to another of their production facilities, a distribution center or directly to their customers. Multiple loading docks allow for ease in large shipments and receiving. Shipments will be transported throughout the United States and overseas.

SPI Blow Molding Fulfillment Services Capabilities:

  • Manufacture, assemble, inspect, package, and ship final products
  • Drop ship orders to our clients’ customers
  • Ability to warehouse products for our customers
  • Dock to stock shipping
  • Ability to use third party transport, mail and delivery systems

SPI Blow Molding provides fulfillment services for The Best Bins Company, headquartered in Minneapolis. SPI currently produces, assembles, warehouses and distributes their bulk food container product line. The bulk container is used for dispensing coffee beans, candies and a wide variety of bulk food items. Having all these capabilities and fulfillment services under the control of the SPI production plants has improved efficiency and saved Best Bin Company both time and money.

SPI Blow Molding provides custom molds and class-A molded parts in a variety of colors. SPI Blow Molding resin capabilities include: High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), Polypropylene, K-Resin, Styrolux, Ethyl Vinyl Acetate (EVA), Polyurethane, Nylon, PETG, and Polycarbonate. Nutraceutical and food products are blow molded from an FDA approved resin.

Along with manufacturing custom molds and molding parts, SPI Blow Molding is a complete manufacturing, fulfillment and distribution center. Newly installed equipment and warehousing space will allow SPI to comfortably offer manufacture, assemble, inspect, package and ship final products.

Expanding SPI Blow Molding’s current manufacturing plant footprint to house the new fulfillment services department will also open up several new jobs to the area.

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SPI’s mission is to provide the best custom molding experience for the injection and blow molded requirements of its valued customers. This experience involves flawless support culminating in successful global product delivery. SPI’s core software, mechanical, and human technologies insure future profitability and growth to its employees, community and customers. SPI’s commitment is embodied in its value statement and quality policy.

SPI Blow Molding molds the HDPE Buzz Ball Football game table that was awarded 2nd place at the Annual Society of Plastics Engineers’ (SPE) Awards. The award was granted in the Industrial Blow Molding Division of the 2nd annual blow molded parts competition. The ABC, SPE Blow Molding competition showcases the latest innovations and advancements in the blow molding industry. The competition was held in conjunction with the 30th Annual ABC and SPE Blow Molding Conference in Chicago, October 5-7, 2014.

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Media Contact for SPI Blow Molding
John Doster 269-488-2752
john.doster@moldedparts.com
3930 Bessemer Rd
Coloma, MI 49038
blow molded game table football

Blow Molded HDPE Table Scores 2nd Place in Industrial Blow Molding Awards

blow molded game table footballSPI Blow Molding molds the HDPE Buzz Ball Football game table that was awarded 2nd place at the Annual Society of Plastics Engineers’ (SPE) Awards. The award was granted in the Industrial Blow Molding Division of the 2nd annual blow molded parts competition. The ABC, SPE Blow Molding competition showcases the latest innovations and advancements in the blow molding industry. Entries in 14 categories for packaging and industrial applications are judged on molding design, manufacturing, material application, sustainability and commercial use. The competition was held in conjunction with the 30th Annual ABC and SPE Blow Molding Conference in Chicago, October 5-7, 2014.

ABC Blow molded parts competition 2014Features of the blow molded HDPE table that caught the judges eye were the configuration of the tackoffs for the blow molded area on the top of the game table as part of the extra deep design.

The Buzzball Table game is a sliding-triangle football game that is a take off of the old folded paper football competitions we played on our school desks and school cafeteria tables back in the day. As you see by photos this blow molded table is similar in size to a foosball table but has adjustable folding legs to allow for portability and storage. These product features were considerations during the mold design process along with the desire to reduce any concerns of warping.

industrial blow molded tackoffsEd Wu of 99Studio Inc. in Naperville, Illinois. along with Alex Lopex of Amiplex, Inc. in Miami, Florida are the designers of the table. Wu has worked with SPI Blow Molding staff for many years and always delivers fun and challenging designs for our blow molding engineers. Always up for a challenge, SPI appreciates the recognition for the work the entire team put in to achieve the award winning results.

industrial-blow-molding-HDPEOther 2014 Blow Molding Competition awards were given to Amcor rigid plastics for the Jack Daniels PET flasks under the blow molded packaging cateogry. First place in the industrial blow molding category was awarded to Coleman Co, inc. for their Esky 135-quart blow molded HDPE cooler.

We’re setting our sights on 1st for blow molding awards 2015! Be sure to check back to see how we score. Give us a call today to discuss ways we can create blow molded packing products or blow molded industrial product solutions.