Published On: Thu, May 5th, 2011

Hema will showcase new GW weight filler at Interpack

At Interpack which will be held in Düsseldorf, Germany between May 12-18, Hema, a subsidiary company of Sidel (Tetra Laval group) that designs, manufactures and sells filling systems for

complex liquid foods as well as for industrials and cosmetics, is going to present its new GW weight filler for vegetable oil packaging, and a GWm model specialized for milk or liquid diary products packaging.


The GW net-weight filler is equipped with the latest generation of weight sensors, according to Hema. The sensors are made entirely of stainless steel and can be used for volumes up to five liters. They have IP69K protection against dust and water penetration.

Hema says that the offset valve makes the GW weight filler a flexible machine for processing both liquid and more viscous products. Its dosing precision is optimized thanks to an innovative level regulation system, and quick tool changeovers make this an ergonomic machine. Due to its small chamber, savings on water and cleaning solutions help to lower both costs and environmental footprint. The GW model can reach output speeds of up to 60,000 bottles per hour.

The GWm model is adapted to liquid dairy products, whether fresh or Extended Shelf Life (ESL) up to 60 days. Because of its new universal nozzle, the GWm can fill foamy liquids like milk, as well as more viscous products such as drinkable yogurt with fruit bits or soft cereals up to 5x5x5mm in size, without the need to change the nozzle tip. This nozzle is available for volumes ranging from 80ml to one gallon. This helps to save a considerable amount of time during product changeover, and the absence of human intervention inside the machine prevents any contamination or the need to use long cleaning and decontamination cycles. The hygienic design of the GWm meets the expectations of the dairy industry and complies with 3A, EHEDG and FDA standards. It enables use of a laminar flow layout. At the end of production, cleaning cycles (CIP-COP) and sterilization cycles at 115°C (SIP-SOP) are fully automated.

Both models are available in the Combi version, offering an integrated solution for blow molding, filling and capping of liquid foods and household products in PET containers. This system limits the pieces of equipment required, while improving package hygiene and increasing production reliability. Coupled with the dry decontamination technology for preforms known as Predis, the Combi GWm is generally used with sensitive products that require the highest level of hygiene.

Hema also proposes fillers in which one turret is used for a thick product and a second turret for a thinner one. This design meets the needs for two-phase products, the manufacturer says.

This synchrobloc has four turrets: first, rinsing and volumetric filling for the viscous phase with fruit bits up to 20x20x20mm in size, then weight filling for the liquid phase with pulp up to 5x5x5mm in size and finally capping. Package sterilization is done with peracetic acid (PAA) and capsule decontamination with pulsed light. The filling chamber is under filtered air. Depending on the chosen recipe and the volume to dose on each carrousel, machine speed can range from 150 to 500 packages per minute. This configuration enables the filling of a multitude of dairy products such as yogurts, two-phase foods, cream desserts and fruit sauces. The first synchrobloc in ultra-clean configuration was recently delivered to a major European dairy group, according to Hema.


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