Blow Molding
Blow molding is used in the manufacture of hollow plastic parts, creating common components like PET bottles, HDPE jugs, and jerry cans. Variations on the process include extrusion blow molding (EBM), injection blow molding (IBM), and injection stretch blow molding (ISBM).
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ESSENTIAL READING
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How to Extrusion Blow Mold PHA/PLA Blends
You need to pay attention to the inherent characteristics of biopolymers PHA/PLA materials when setting process parameters to realize better and more consistent outcomes.
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Avoid Four Common Traps In Granulation
Today, more than ever, granulation is an important step in the total production process. Our expert explains a few of the many common traps to avoid when thinking about granulators
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Understanding the ‘Science’ of Color
And as with all sciences, there are fundamentals that must be considered to do color right. Here’s a helpful start.
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Solve Four Common Problems in PET Stretch-Blow Molding
Here’s a quick guide to fixing four nettlesome problems in processing PET bottles.
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Follow These Steps to Purge Accumulator-Head Blow Molders
Preventive purging with a commercial product between resins or colors and during normal shutdown and startup cycles can prevent excessive loss of resin and production time.
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What Blow Molders Say About All-Electric Machines
They are well established in Europe, but molders in North America are just beginning to come around to all-electrics’ improved performance, maintenance, cleanliness, and—yes— energy efficiency. Here’s first-hand testimony, from the U.S. and abroad.
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Latest Blow Molding News And Updates
Lighter, Higher Performance Base Design for Premium rPET Bottles
Sidel’s StarLITE-R Premium base for thicker rPET bottles ensures bottle stability in high-speed production, while saving energy.
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Circular Network for Returnable Cosmetics and Personal Care Bottles
Stock reusable PET and glass bottles are provided to brands in Europe, along with consumer drop-off and collection points, labeling codes to identify bottles for reuse, cleaning technology, and recyclers to handle caps and pumps.
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Uniloy Appoints Technology Leader and Eastern Regional Manager
Chris LaBombarbe and Chris Weinrich have joined the company.
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Brewer Chooses Quick-Change Flexibility to Blow Wide Range of PET Beer Bottles
Beermaster Brewery found a “universal” stretch-blow machine from PET Technologies enables multiple changes per day among four sizes of beer bottles.
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End-to-End Quality Management For Aseptic PET Beverage Bottling
Sidel introduces Qual-IS comprehensive quality system to merge all QC activities in PET aseptic beverage bottling, from the preform blowing to laboratory management.
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Graham Packaging Commercializes Technology for Lightweighting Blow Molded Handleware
Graham Packaging’s “AccuStrength” technology for selectively reinforcing extruded parisons with vertical ribs now has a commercial application in laundry detergent.
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Featured Posts
Custom Molder Pivots When States Squelch Thriving Single-Use Bottle Business
Currier Plastics had a major stake in small hotel amenity bottles until state legislators banned them. Here’s how Currier adapted to that challenge.
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NPE2024 Wrap-Up: Sustainability Dominates Show Floor News
Across all process types, sustainability was a big theme at NPE2024. But there was plenty to see in automation and artificial intelligence as well.
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Use Interactive Production Scheduling to Improve Your Plant's Efficiencies
When evaluating ERP solutions, consider the power of interactive production scheduling to effectively plan and allocate primary and secondary equipment, materials and resources on the overall production capacity of the business and conclude that this is a key area that cannot be overlooked.
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For Extrusion and Injection-Blow Molders, Numerous Upgrades in Machines and Services
Uniloy is revising its machinery lines across the board and strengthening after-sales services in tooling maintenance, spare parts and tech service.
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Blow Molder with a Mission: CKS Packaging Shares Gains Of Its Phenomenal Growth
From three machines in 1986 to 27 plants nationwide today, this family-owned processor has prospered through unwavering customer service, committed employees and dedicated service to its community.
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Breaking News From NPE2024
Here is a firsthand report of news in injection molding, extrusion, blow molding and recycling not previously covered.
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FAQ: Blow Molding
What Are Common PET Stretch-Blow Molding Problems and How Can I Fix Them?
Common problems:
1. Pearlescence and haze
2. Insufficient top-load strength
3. Insufficient base clearance or rocker bottom
4. Drop-impact failure
Fixes: https://www.ptonline.com/articles/solving-four-common-problems-in-pet-stretch-blow-molding
How to Fix Uneven Wall Thickness in Stretch Blow Molding?
There are a number of conditions that must be maintained in order to achieve the described result. Following are the various issues that can skew wall thickness, in order of relevance:
Off-center gate
Uneven heating or cooling
Small stretch ratios
Part failure along the parting line is related to material processing conditions, parison geometry, molding conditions, mold design, or a combination of these factors. Developing the optimal material shape inside the part at the pinch-off is a key to building parting-line integrity.
Blow Molding Supplier Categories
- Rebuilt Screws or Barrels
- Thermoformers
- Automation/Systems Integration
- Platens
- Thermoforming Molds
- Extrusion Blow Molding Machines
- Recycling--Purchasing Scrap or Waste Plastics
- Blow Molds
- Technical and Trade Associations
- Pre-expanders, Polystyrene Bead
- Trimmers, Deflashers for Blow Molding
- Custom Compounding, Formulating--Thermoplastics
- Stretch-Blow Molding Machines
- Barrier Surface Treatment
- Plastics Trade Shows/Conferences
- Machine Alignment Services
- Nonferrous Metals for Molds
- Machinery Rebuilding
- Training Programs in Plastics
- Mold/Die Management Systems
- Shipping & Logistics
- R&D, Training Institutes
- Rebuilt Motors and Drives
- Injection Molds
- Mold Steels
- Injection Blow Molding Machines
- Prototyping Services
- Dip-Blow or Compression-blow Molding Machines
- Cutting, Stamping, Trimming Dies
- Mold/Tooling Simulation and Analysis Services
- Quick-mold-change Equipment
- Mold Making and Repair Equipment
- Parison Programmers
- Mold Components
- Custom Machine Builders
- Injection Blow Molds
- Custom Size-reduction (Grinding) Services
- Consultants - Design, Manufacturing, Purchasing
- Presses, Polystyrene Bead
- Spray Coating Systems (for Bottles)
- Rotational Molds
- Part/Mold Inspection or Digitizing
- Inserts
- Materials Testing Services
- Accumulators (Melt)
- Hydraulic Oil Filtering/Reclaim Service
- Structural Foam Machines (for Thermoplastics)
- Tool Engraving, Texturing Equipment
- Publishers of Plastics Information (Books, Reports, CDs)
- Mold Texturing, Tool Engraving
- Mold Evacuation Systems
- Mold Grease
- Rotational Molding Machines
- Machine Installation Services
- Hard Facing, Surface Treating of Tooling, Equipment
- Mold/Tooling Design Services
- Compression/Transfer Molds
- Business Services for Plastics (Finance, Insurance, Leasing)
- Mold-cleaning and Maintenance Chemicals
- Nonmetallic Tooling Materials
- Hot Runner Components
- Radiation Processing Services
- Machine Maintenance Services
- Used Molds
- Used Machinery
- Environmental Monitoring and Analysis
- Equipment Cleaning Services
- Custom Decorating/Finishing Services
- Foam Molds
- Compression/Transfer Presses
- Prototype Molds
- Scanning & Metrology Services
