Blocked blow molding system offers energy savings

Jessica Hobrook

Published: February 27, 2012 6:00 am ET

Related to this story

Topics Materials Sustainability Packaging Blow Molding Molds/Tooling Product News NPE 2012
Companies & Associations

LAS VEGAS (Feb. 27, 12:05 p.m. ET) — With rising energy and material prices, many companies are looking for ways to cut costs without sacrificing quality.

KHS Corpoplast GmbH recently introduced its blocked blow molding system — a combination blower, filler, and capper unit that can be used in PET applications.

The InnoPet Blofill blocked system is designed to increase efficiency and cut costs, said Bj"ern von Lengerke, general sales manager for KHS, during a presentation at The Packaging Conference.

“You can blow your own package and you can fill it right away in line. By doing so, you can reduce the packaging costs and increase the advantages on the logistics side,” he said in a Feb. 7 presentation at the Las Vegas conference.

The system connects the blower directly to the filler and capper unit, cutting out the air conveyer, bottle rinser and other components. Instead, a multi-functional star wheel conveys the bottles from blower to filler by way of a transfer block. The block separates the dry blow molder from the wet filler and includes an airlock with constant air flow.

“You make sure the wet side, the humid side from the filling side isn’t entering the stretch blow molder, because the stretch blow molder doesn’t like that,” von Lengerke said.

The base system can be used for water or other non-carbonated soft drinks and can make up to 72,000 bottles per hour.

With some modification, the system can also be used for carbonated beverage applications and hot fill applications at 185-190° F.

A cooling system – a star wheel equipped with a set number of spray nozzles – can cool bottles bases from approximately 167° F to 131° F. This eliminates the risk of stress fracturing, which is a common deterrent to using blocked systems, von Lengerke said.

“There are less and less arguments against blocked systems like this,” he said.

The cooling system can be modified based on production needs, is efficient and has low water consumption, he added.

The Blofill blocked system can make several bottle types at maximum speed, giving users a flexibility that was not available with previous blocked models, von Lengerke said. New heating technology also cuts down on start up time and reduces pre-form losses.

Temperature restrictions can make the system difficult for some hot fill applications in the US, but with some adjustments can be used for a variety of juices, teas, and other drinks, he said.

Because blocked systems like the Blofill eliminate the traditional air conveyer, they have several advantages over standard systems, von Lengerke said.

The machine can handle delicate light-weight pre-forms, even in hot-fill applications. The design also saves space and uses less energy, an important consideration in plants in Europe and Asia, and companies can save on human resources costs because the system only requires one operator, he said.

The blocked blower and filler unit may be less efficient than separate blower and fillers, but standard lines are limited by their least efficient component – often the air conveyer, von Lengerke said. In these cases, blocked systems can be more efficient than traditional ones.


Comments

Blocked blow molding system offers energy savings

Jessica Hobrook

Published: February 27, 2012 6:00 am ET

Post Your Comments


Back to story


More stories

Image

Commerce Department agrees to investigate PET dumping complaint

April 1, 2015 1:42 pm ET

UPDATED — A flood of alleged low-priced PET resin imports has led three U.S. PET makers to seek anti-dumping duties.    More

Image

Fire at Texas plant could impact polypropylene market

April 1, 2015 11:21 am ET

UPDATED — No injuries were reported in a March 30 fire at an ExxonMobil Chemical propylene unit in Beaumont, Texas — but the incident...    More

Image

Solegear raising funds as it debuts on TSX Venture stock exchange

April 1, 2015 11:08 am ET

A fledgling bioplastics company has raised capital for growth and obtained a listing on the TSX Venture stock exchange.    More

Image

Lanxess merges PU additives into Rhein Chemie division

April 1, 2015 9:17 am ET

German resin company Lanxess AG has combined the activities of the former Rhein Chemie and its Lanxess functional additives business into a new Rhein ...    More

Image

North American Pipe unit lab to focus on 'modern, innovative' formulations

March 31, 2015 3:25 pm ET

North American Specialty Products LLC — a unit of North American Pipe Corp. — has opened a new material science lab in Leola, Pa.    More

Market Reports

Trends in Resin Distribution

The growth of the North American resin distribution market is undeniable - and industry analysts are confident that growth will continue in 2015 and beyond.

This new report analyzes market trends and provides data on historical sales trends for PE (distribution and resellers), PolyOne Distribution figures, U.S. ethylene expansions based on shale gas and natural gas production by category to 2035.

Learn more

Plastics Recycling Trends in North America

This report is a review and analysis of the North American Plastics Recycling Industry, including key trends and statistics based on 2013 performance. We examine market environment factors, regulatory issues, industry challenges, key drivers and emerging trends in post-consumer and post-industrial recycling.

Learn more

Plastics in Mexico - State of the Industry Report

This report analyzes the $20 billion plastics industry in Mexico including sales of machinery & equipment, resins and finished products.

Our analysts provide insight on business trends, foreign investment, top end markets and plastics processing activity. The report also provides important data on exports, production, employment and value of plastics products manufactured.

Learn more

Upcoming Plastics News Events

June 2, 2015 - June 3, 2015Plastics Financial Summit - Chicago 2015

September 16, 2015 - September 18, 2015Plastics Caps & Closures - September 2015

More Events