How Extrusion Blow Molding Differs From Injection Molding?

If you operate a business that has a requirement for specially formed plastic bottles or containers, such as for juice and water bottles or liquid soaps and shampoos, it’s to your benefit to understand the various manufacturing processes for making those bottles and containers. What follows is an explanation of the extrusion blow molding process and how it differs from injection molding. 

extrusion-blow-molding-process

Extrusion blow molding (EBM) is a manufacturing process whereby plastic is melted and extruded (that is, expelled to form a shape) into a hollow tube; a form or mold. (At this point of the process this material is generally referred to as a “parison,” which is a round melted mass that will then be molded; or formed.) The parison is held and sealed in the metal mold. Air is then blown into the mold thereby shaping it into the desired shape of the bottle or container. Once the plastic has cooled, the mold is opened and the part is discharged. There are two variations of extrusion blow molding: Continuous (with a constant extrusion of the parison) and Intermittent.

Injection molding (AmE or BrE), on the other hand, may seem similar but it is a different process. Injection molding is also a method of manufacturing products and parts by injecting material (such as plastic) into a mold. In this case, plastic in the form of pellets is melted and then injected (forced) into a mold where it cools and solidifies to the shape of the mold. The finished result is the exact copy of the mold.

Contact Details:

PET ALL MANUFACTURING INC.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Email: cmerrick@petallmfg.com

Blow Molding Purging Procedures

Purging your blow molding machine is necessary to ensure optimal performance and a superior end product. While there are some differences between standard and custom blow molders, the blow molding design is similar enough that there is no real impact on the purging process. Even when it comes to extrusion blow molding vs. injection blow molding, purging is essential.

Blow-Molding

Safety First

If you plan to purge standard or custom blow molders, safety is the number 1 priority. Therefore, be sure that you follow all required safety procedures before the startup and shutdown, regardless of the material. You need to don the appropriate protective clothing, gloves, and eyewear, and use a shield. If the machine has a vented barrel, clean the area around the plug and vent before sealing. 

Read more at the original source: http://www.petallmfg.com/blog/blow-molding-purging-procedures/

Contact Details:

PET ALL MANUFACTURING INC.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Email: cmerrick@petallmfg.com

 

How Does a Blow Molding Machine Work?

Of the many different machines used for manufacturing products, the blow molding machine is one of the most fascinating and useful. Known as extrusion blow molding, the simple explanation as to how this blow mold design works is that air is blown into a parison, shaping the hollow bottle as it inflates. However, there is much more to the plastic extrusion blow molding process.

Blow-Molding-Machine

The Blow Molding Process

The extrusion blow molding process produces plastic bottles of various sizes and shapes. Millions of people use these bottles daily for soda, water, cleaning products, food, and more. With this process, low-pressure air of around 25 to 150 psi is forced into a parison. Multiple materials are used, including Low-Density Polypropylene (LDPE), High-Density Polyethylene (HDPE), Polyvinyl Chloride (PVC), Polyethylene Terephthalate (PET), and Polypropylene (PP). 

View the original source: http://www.petallmfg.com/blog/how-does-a-blow-molding-machine-work/

Contact Details:

PET ALL MANUFACTURING INC.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Email: cmerrick@petallmfg.com

Injection Blow Molding (IBM) Machine: Know Your Part Well Before Sizing Machine and Tooling

The injection blow molding process is a good, reliable choice for producing challenging and delicate parts. Many factors need to be taken into account before purchasing an injection blow molding machine, including technology and price. 

injection blow molding machinery

Prior to selecting the blow molding resin, you also need to know the part’s specifications, the final weight, and the shot size. Typical IBM resins are HDPE, LDPE, PP, Nylon, etc.

Cycle time and shot size affect the IBM machine’s output. To conservatively predict the IBM machine’s maximum output, assume 90 percent of its highest screw speed. The extruder should have a low melt temperature, as heat increases during the cycle time. 

Continue reading at original source: http://www.petallmfg.com/blog/injection-blow-molding-ibm-machine-know-your-part-well-before-sizing-machine-and-tooling/

Contact Details:
PET ALL MANUFACTURING INC.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Email: cmerrick@petallmfg.com

Advantages of Extrusion Blow Molding

There are a tremendous number of benefits associated with extrusion blow molding (EBM) for the manufacturing of plastic products.

  • Revolutionary and Innovative Technology – Because companies can now better meet the demands of their customers for plastic ware, blow molding is considered an innovative form of technology. Not only is manufacturing using this type of extrusion blow molding faster, it allows for higher-volume outputs. That means that mass production of plastic goods is quicker and more cost-effective.
  • Versatile – In addition to plastic containers that hold fluid, engineers have turned up the creativity level by designing a variety of unique applications and designs, including vehicle seal supports, flower pots, and fuel tanks, to name a few.

Continue reading at original source: http://www.petallmfg.com/blog/advantages-of-extrusion-blow-molding/

Contact Details:
PET ALL MANUFACTURING INC.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Email: cmerrick@petallmfg.com

Blow Molding: How It Works

Before going into detail as to how blow molding works, it helps to understand what it is. This manufacturing process is actually comprised of two parts. First is a parison, which is the starting tube made from molten plastic. The second part is the inflation of the tube, which is what molds the part or component into the desired shape.

Blow Molding - How It Works.jpg

This particular type of molding is used to make hollow plastic containers. Some examples include jars; containers; and bottles for milk, sports drinks, shampoo and conditioner, and so on. In other words, the containers that hold products used by millions of people around the world on a daily basis are created using this molding process.

This process offers many advantages. The blow molding method works well for creating complex shapes, production times are fast, and the empty plastic containers are recyclable.

There are three specific types of blow molding machines

Curious to know more? View original source: http://www.petallmfg.com/blog/blow-molding-how-it-works/

Contact Details:
Pet All Manufacturing Inc.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Email: cmerrick@petallmfg.com

Pet All Manufacturing, Inc – Type of Blow Molding Machinery Manufactured

While there are a number of good companies to consider, it is important that you choose a premier provider of cutting-edge blow molding equipment. When searching for the best blow molding manufacturers, you want a company that provides exceptional options, whether searching for an innovative injection blow molding machine or extrusion blow molding machine.

 blow-molding-machine4

Pet All Manufacturing offers an extensive line of blow molding machine for top leaders in both America and Canada. The product line includes a number of outstanding equipment options, each proudly displaying the Pet All name.

  • Leak Testers (used for leak-testing bottles)
  • Preform plastic injection molding
  • Plastic bottle molding machine
  • Reheat stretch molding machinery
  • Single-stage injection stretch blow molding machines

Originally shared at: http://www.petallmfg.com/blog/pet-all-manufacturing-inc-type-of-blow-molding-machinery-manufactured/

Contact Details:
Pet All Manufacturing Inc.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Web: http://www.petallmfg.com/
Email: cmerrick@petallmfg.com

Electric Injection Blow Molding

electric-injection-blow-molding

The CanMold brand, owned by Pet All Manufacturing is one of only 2 companies in the world offering fully electric injection blow molding machinery. We are the only company offering larger machines of 135 ton and 189 ton in full electric version.

The machine is offered in all the sizes shown in the attached chart and offers large advantages over standard hydraulic blow molding technology.  A few of these advantages are as follows:
  1. Power consumption on the 88 Ton machine (9 cavity mold with 150ml container) is 14.5 KW, whereas a standard machine, which is fully hydraulic, has a requirement of 27 KW.

  1. Production cycle is 2-3 seconds faster on the full electric than the standard hydraulic unit.

  1. The full electric uses no hydraulic oil and offers complete clean room cleanliness and no risk of product contamination from oil.

View Original Source: http://www.petallmfg.com/blog/electric-injection-blow-molding/

Contact Details:
Pet All Manufacturing Inc.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Web: http://www.petallmfg.com/
Email: cmerrick@petallmfg.com

Confusion in Blow Mold Machine Names

blow-mold-machine-names

  • Injection Blow Molding (IBM)
  • Extrusion Blow Molding (EBM)
  • Injection Stretch Blow Molding (ISBM)
  • Reheat Stretch Blow Molding (RHSB)

These terms are used on a daily basis in the plastic blow molding machine business.  They can be very confusing to blow molding machinery users.

Many users mix up Injection Stretch Blow Molding (ISBM) and Injection Blow Molding (IBM) in particular.  The difference between these two is the word “stretch”, which refers almost exclusively to PET which is stretched to give added strength.  HDPE and PP are rarely “stretched”, but injection blow molded without “stretch”.  The neck is injected, and the body blown in the same process (IBM).

View Original Source: http://www.petallmfg.com/blog/confusion-in-blow-mold-machine-names/

Contact Details:
Pet All Manufacturing Inc.
85 Royal Crest Court, Units 1 & 2 Markham,
Ontario, L3R 9X5
Phone: (905) 305-1797
Web: http://www.petallmfg.com/
Email: cmerrick@petallmfg.com