Posted: April 7th, 2010
Injection Blow Machinery
These machines inject mold a preform onto core rods and then index the core rods to a blow station to blow the container. Machines are typically 3-4 stations to allow for condition and part removal. They are utilized extensively for very small containers such as pharmaceutical and hotel shampoo type containers. Major manufacturers are Jomar, Procrea and Milacron.
PROS:
- Scrapless process meaning no flash to trim and no regrind
- Typically suited for containers .5 litre and smaller
- Capable of running a wide range of materials
- High quality injection molded neck finish
CONS:
- Very high tooling cost per container typically cost 40-50% of the machine cost
- Difficult to run coinjection or multilayer
- Minimum cycle time typically 15 seconds
- Can not do handleware
Back to Blow Molding Process Comparison.
Tags: Hotel Shampoo Containers, Pharmaceutical
Posted in Blow Molding, Structural Plastics / Injection Blow | No Comments »
Posted: April 7th, 2010
Injection Stretch Blow (2-Step)
This process is also almost 100% for PET applications. The processes utilizes preforms made on a stand-alone injection molding machine, stored and then reheated and stretch blow similar to the 1-step process above. Here, however, the preforms are blown at a lower temperature allowing the maximum amount of biaxial orientation and therefore the maximum strength to weight ratios. The reheat process can be for ultra high output type applications such as carbonated soda bottles while other machines can be smaller for medium to high production requirements. Major machinery manufactures include Sidel and Krupps.
PROS:
- Can be very high speed production (40,000 containers / hour)
- Produces a very high strength-to-weight ratio container
- Can purchase or make preforms
- Primarily PET material
- Machines for low and medium volume application are becoming available
CONS:
- Can not mold handleware
- Not capable of polyolefins
- Must have a separate preform mold and injection molding machine or purchase preforms
- For low volume production, if special design preform is required, cost can be expensive
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Tags: High Volume, PET
Posted in Blow Molding, Structural Plastics / Injection Blow | No Comments »
Posted: April 7th, 2010
Reciprocating Screw (Intermittent Extrusion)
This is the most popular and cost effective method to produce lightweight dairy, juice and water containers. In this process the extruder feed screw reciprocates similar to an injection molding machine. The molds are stationary under the die head and simply open and close but do not shuttle. As the screw moves forward, the parison is pushed out into the molds for blowing. For lightweight containers, cycle times can be very fast with some under 5 seconds. Major machinery manufactures include Rocheleau and Uniloy.
PROS:
- Very fast cycle time capabilities
- Simple machine motions since clamps do not move
- Capable of 16 cavities small bottles or 8 gallons. Smaller models available
- Relative low cost per cavity
- Can easily run homo polymers and very low melt temperatures
CONS:
- Limited to monolayer applications
- Primary materials are HDPE and limited amount of PP
- Difficult to parison program
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Tags: Dairy Containers
Posted in Blow Molding | No Comments »
Posted: April 12th, 2009
NPE 2009 – Booth # S36054
Wilmington Machinery continues to develop unique proprietary machines for new applications. Can’t find the right machine to do your job? Wilmington Machinery experience might be just what you need to separate your company from the competition. Wilmington Machinery’s approach allows you to own your own unique technology and gives you all exclusive rights to the new process. That is a significant competitive advantage!
Wilmington Machinery understands your needs and how to define, create specifications, design, build, validate, train and document. This approach has proven highly successful in building, thermoforming, extrusion, injection, blow molding and hybrid type proprietary systems. Visit Booth S36054 to discover how Wilmington Machinery has, for more than forty years, helped diverse customers with proprietary machinery needs.
2009 NPE Wilmington Machinery Booth: # S36054
To set up an appointment at the show contact:
Jeff Newman
Wilmington Machinery
4628 Northchase Parkway NE
Wilmington, NC 28405
910.452.5090 x104
Email: jnewman@wilmingtonmachinery.com
Tags: NPE
Posted in Custom / Proprietary Machinery, News / Tradeshows | 1 Comment »
Posted: April 12th, 2009
NPE 2009 – Booth # S36054
The Wilmington Machinery LUMINA line has been significantly improved with a simplified nozzle / manifolding system, streamlined independent sequence nozzle control, larger platens and electric extruder drives.
Wilmington Machinery is a recognized leader in the manufacture of structural foam injection molding machinery for the production of structural plastic parts up to 300 lbs. and 10 ft. in length. Wilmington Machinery’s unique Versafil sequential injection system allows precise molding of multiple yet completely different parts at the same time and true independent nozzle control.
Important product line attributes for the LUMINA include:
- Two-stage extrusion/injection
- Sequential injection
- Multi-nozzle injection with modular manifolds
- Independent nozzle control
Wilmington Machinery will evaluate a processor’s needs and recommend an appropriate system from their extensive Lumina series. Should application needs fall outside its standard product offering, Wilmington Machinery provides years of proven expertise in customizing processing equipment and systems to meet all technical requirements for optimum economic results.
LUMINA systems are currently available for immediate shipping.
2009 NPE Wilmington Machinery Booth: # S36054
To set up an appointment at the show contact:
Russ La Belle
Wilmington Machinery
4628 Northchase Parkway NE
Wilmington, NC 28405
910.452.5090
Email: russ@wilmingtonmachinery.com
Tags: LUMINA, NPE, Versafil
Posted in News / Tradeshows, Structural Plastics / Injection Blow | 1 Comment »
