Archive for February, 2001

PCL Packaging: Purchase of film plant from Uniplast

Thursday, February 22nd, 2001

PCL Packaging Corp., USA plans to expand into the southeastern United States by acquiring a polyethylene film plant in Jacksonville. Oakville, Ontario-based PCL has agreed to buy the plant from Uniplast Industries Co. The facility has five blown film lines capable of making 10 million to 12 million pounds of film per year.

Zumbach: Real-Time SPC on Tubing, Wire & Cable

Wednesday, February 21st, 2001

The new USYS 8000 is the most powerful extrusion monitor yet introduced by Zumbach Electronics Corp.It monitors up to eight sensors on lines for tubing, wire or cable and displays data on diameter, wall thickness,concentricity, capacitance, spark testing, and lump or neck-down detection. Data are shown with graphic icons on a 12-in., color LCD panel. Graphic labels reportedly make USYS 8000 easy to set up and configure for a particular extrusion line.

Alpha Marathon Technologies: Dual-Lip Ring Adjusts Each Air Flow Separately

Wednesday, February 21st, 2001

A new approach to tuning a dual-lip air ring is said to be the first to tune the two lip gaps independently. Dual-lip air rings are usually tuned by moving a single flange that adjusts the ratio of air between the two lip openings. The new Reciprocating Air Technology for the Millennium Air Ring from Alpha Marathon Technologies Inc., has knobs above and below the air ring, which independently adjust two control mechanisms. Alpha Marathon says this gives greater control of air velocity for better gauge control of very thin (0.4- to 3-mil) film. It reportedly also can help boost output by 20-30%.

Conair: PVC profile cutting device

Tuesday, February 20th, 2001

Conair in Pittsburgh has introduced a new PVC profile-cutting technology to the U.S. It is marketing the ProCut saw line from cpm GmbH, Germany. ProCut’s patented technology uses a very thin guillotine blade, which is kept under tension to stiffen it. This blade cuts through PVC profiles very slowly, taking 3-5 sec, depending on the size of the profile. This technology is creating no noise, heat or dust and leaving a smooth, polished-looking edge.

Erema: Knives with up to nine times longer life

Monday, February 19th, 2001

Adjustable pressure on the knives of a new water- ring pelletizer can give up to nine times longer service life, says Erema Plastic Recycling Systems. Its new HG Model pelletizers have a simplified knife holder with optional automatic pressure control, which maintains uniform knife pressure on the die plate, greatly reducing wear. HG pelletizers are suited to most thermoplastics, except nylon, PET or PP with over 100 MFI. Model HG 152 puts out 330 to 1300 lb/hr. Model HG 242 is for 880 to 3300 lb/hr. Model HG 80 runs up to 475 lb/hr but doesn’t have the knife-pressure option.

Macro Engineering: Extrusion Coating Line for PVdC in China

Monday, February 19th, 2001

Possibly the only commercial system for extrusion coating with PVdC is running in China. Its current use is coating 1-4 mils of PVdC onto 10- mil rigid PVC for pharmaceutical blister packs. The developmental line was built two years ago by Macro Engineering & Technology Inc. in Mississauga, Ont. It corporates options for coextrusion and lamination. Macro also built the Duranickel coating die, an oil-cooled coat-hanger design. The line runs a developmental coating grade of Saran from Dow Plastics. According to Macro, extrusion coating takes less expensive equipment to put a PVdC moisture barrier onto PVC than does the standard emulsion-coating route.

Rubicon: New Gear Pump for rubber extruder

Friday, February 16th, 2001

Rubicon, Germany has developed a new gear pump for rubber extruder. This gear pump in connection with a cold feed rubber extruder is the most suitable unit to make rubber profiles, strips and hoses with highest demands of dimension tolerances as well output stability. Such a pump can easily incorporated in an existing extrusion line between the extruder and the head. Especially in application with a vent extruder an overflowing of the vacuum Zone is completely avoided by that system even at high pressures. The extruder-gear pump unit stands for increasing of output, product quality and saves material cost.

Windmöller & Hölscher: New Insulated Multi-Level Internal Bubble Cooling System

Friday, February 16th, 2001

The problem is a quite common one in the blown film industry: After some time of production, volatile matters emanating from the film build up on the internal cooling elements. These deposits may be dragged along by the cooling air, with a resultant adverse effect on the quality of the film. This phenomenon is similar to misted-up windows in a car as a result of condensation. To maintain good film quality at all times, the extrusion line has to be shut down in order to clean the IBC elements of the detrimental deposits. Such clean-ups involve a great deal of effort and downtime.
Windmöller & Hölscher, Germany has recently come up with an answer to this problem by offering the market an insulated multi-level internal bubble cooling system.
Unlike the W&H IBC systems known so far, the new design is made out of insulation material. Extensive R&D and field tests have proved the combination of the different physical properties of the materials used in construction to dramatically reduce condensation with a resultant positive influence on film quality. According to companies using the new system, the run time between cleaning cycles has been dramatically extended (2 to 8 times or sometimes even 20 times, depending on the type of resins processed), compared to previous IBC concepts. The benefits to the film converter are quite obvious, reduced down-time and extended up-time as well as less start-up waste which results in resin savings. Due to the said advantages, return on investment is achieved within only a few months’ time.
The insulated IBC system is available as an option for new W&H VAREX® blown film lines and can also be supplied as a retrofit for existing VAREX® extruders.
The advantages of the new concept are so convincing that as many as 16 units could be sold within a short time world-wide.

Conair: Portable Chillers with Dual Pumps & Compressors

Thursday, February 15th, 2001

Conair, USA has introduced a new top-of-the-line, self-contained portable chillers which use separate pumps for process and recirculation flows. They are said to ensure consistent flow rate and pressure regardless of changes in system loading. Large models (20 hp and above) of these Series 3 chillers also have dual Copeland scroll compressors on two refrigeration circuits for maximum cooling capacity and operating efficiency. Compact brazed-plate condensers help keep footprints 40% smaller than competitive models. Series 3 ranges from 3.5 to 30 tons in air- and water-cooled models Features include hot-gas bypass on all compressors, PLC controls with plain-English displays, stainless-steel tanks and side panels, nonferrous plumbing, top air discharge on air-cooled models (to direct heated air away from operators), and full 3-yr warranty.

Ftex & Ikegai: Extrusion of PET sheet from undried bottle flake

Thursday, February 15th, 2001

Ftex, Inc. ,Japan, has jointly developed with Ikegai Corp., Japan,a two-stage reactive extrusion system for producing transparent PET sheet directly from undried bottle flake. The process uses technology developed by Dainippon Jushi Kenkyusho (DJK) Co. that quickly restores molecular weight (I.V.) lost during production of the original bottles from which the recycled flake was recovered. The system starts with a twin-screw extruder, into which a premix of PET flake and catalyst is fed. In this first stage, moisture and air are removed from the material, and the catalytic reaction is begun. The reaction is completed in a second- stage single-screw extruder that produces the sheet. Total residence time is 2-5 minutes. Ikegai has built a prototype machine and plans to build a larger model, capable of 1.2 million lb/yr.