Equipment Information

Transcription

1 R275CD Equipment Information INDEX: DESCRIPTION AND KEY FEATURES LAYOUT NOMINAL TECHNICAL DATA CONFIGURATION Sealed Air GmbH Customer Systems Center D4 Park 4 CH-6039 Root-Längenbold Telephone: +41 (0) Telefax: +41 (0) Reg. U.S. Pat. & TM Off. Sealed Air Corporation All rights reserved. Printed in Switzerland The 9 Dot Logo and Sealed Air are registered trademarks of Sealed Air Corporation (US). No part of this manual may be reproduced or transmitted to any party without prior expressed written consent from Sealed Air Corporation.

2 1 Description and key features 1.1 Description The Cryovac Darfresh R275CD is one of the models (together with R175CD and R575CD) of the new generation of Multivac Darfresh packaging machines, jointly developed by Cryovac and Multivac. R275CD is designed for medium output capacity and a variety of pack sizes. Applications are typically high quality cuts of meat, processed meat, paté, fish, etc. The Darfresh process uses two films (webs) joined together to form the finished package. The edges of the lower web are gripped by chains and moved in cycles by the positioning drive, the lower web is heated and formed into trays in the forming station. The adjacent corner cutting device produces a loose edge on the pack to facilitate opening. The product is then loaded onto the formed trays either manually or automatically. The upper web is unwound and guided by chains through the pre-heating station, where it is softened by contact heat. With the next advance, both the upper and lower webs enter the skin station, the chamber is closed and evacuated. Once the upper web has been heated in the dome, it is total surface sealed to the lower web under vacuum without the formation of wrinkles. The cutting units separate the individual packs. The R275CD incorporates a memory for 200 program settings. All machine functions, temperature control, timers, etc. are controlled by microprocessors. Programming is simple and made via a soft touch control panel and LCD display. With this latest generation of machines special attention has been given to a perfect hygienic design both outside and inside the machine. All critical parts are treated against the corrosive environment often found in food production and packaging rooms. Designed with ergonomics, safety and hygiene in mind it is easy to use and clean, simple to maintain and meets all relevant European legislation for safety and hygiene. 1. The air in the sealing die and pack is evacuated. The preheated top web clings to the dome, is further heated and becomes flexible. 2. Soft ventilation lets the film slide into gaps and spaces. Full ventilation creates pressure, the bottom and top web are sealed to each other. 3. The dome opens. The top web covers the product skintight. Top and bottom web are sealed all around the product over the whole surface. 1.2 Key features The Darfresh films are available with different specifications to suit all skin packaging applications (see Film details, page 5). Easy-peel corner for consumer convenience Total surface sealing prevents juice migration and keeps surface decoration in place Stainless steel modular frame Hygienic design makes cleaning easy and effective Good access for maintenance Robust high quality build standard using food approved materials throughout Utilises well proven and reliable mechanical systems 2

3 2 Layout Nominal machine width (mm) Cut-off length (mm) Max. number of rows Max. pack depth (mm) Darfresh dome height (mm) Max. product height (mm) 320, 355, 420, 459, 466, 480, 520, , 50, Fig. 2-1, Layout 3

4 3 Nominal technical data 3.1 Machine dimensions Length, Width & Height See machine layout 3.2 Weight Weight of the machine depends on the machine specification 3.3 Utilities Compressed air Water Air type Clean and dry, oil free Pressure 7 bar Supply pipe diameter ¾" - 1" Consumption m 3 /h Connecting fitting 20 mm Inside dia. flexible pipe Pressure 2-4 bar Consumption 3 l/min Connecting fitting 8 mm Inside dia. flexible pipe Temperature max. 15 C Exit connection 8 mm Inside dia. flexible pipe Electrical Voltage No. of phases Frequency Power consumption Current protection 400 V 3 + earth + neutral 50 Hz * 19 kw (average value) * 80A up to 125A Note: * Power consumption and current protection are calculated upon machine configuration and dimension. Please refer to the technical datasheet delivered by Multivac at machine order confirmation. 4

5 3.3.4 Vacuum Main pump 220/80 m 3 /h (depending on product type and pipe length) Alternative booster pump: 500 m 3 /h (to be used with external vacuum pump) (depending on product type and pipe length) External vacuum pump 250 m 3 /h (depending on product type and pipe length) Connection 60 mm 3.4 Working characteristics Film details Width 320, 355, , 466, 480, 520, 560 mm Core diameter 6" Film type(s) Darfresh films (rigid, flexible, foam) Top Webs TL - For low profile products TS - For products with more pronounced contours TC - For products of average height and for in-pack cooking TH - For very high or very hard products TP - Printed film for low profile products Bottom Webs Semi-rigid films PS based, in combination with PET, are available in a wide choice of colours and metallic finished, or rigid foamed PP films Tray lower web dimensions Length Width max. pack dimensions max. product height max. dome height max. forming depth 400 mm 520 mm 520 x 400 mm protruding above chain level: 55 mm 50 mm (optional 60mm) 45 mm Functional details No. of operators No. of packs per cycle Working speed Noise level 1-3 depending on loading method depends on products and machine specification max. 12 cycles/min (depends on products and machine specification) 77 db (A) at operator's working position 5

6 4 Configuration 4.1 Standard configuration Tooling, to be specified at time of order. The following variables must be defined: Film width (320, 355, 420, 459, 466, 480, 520, 560 mm) Repeat length (cut-off length) 180/400 mm Sealing dome height (30, 50 and 60 mm) Tray (lower web) shape and depth (5 / 45 mm) Bottom web unwinder Forming station Corner cutting device Loading area Top web unwinder Top web pre-heating Skin station Transversal cutting device Longitudinal cutting device Film edge trim rewind RSW Discharge conveyor 600 mm MC - Drive advance system CRG Transport chain (stainless steel) Spare parts kit Manual Declaration of Conformity Pneumatic basic equipment Maintenance unit R ¾" Safety valve Pressure switch Valve assembly for forming station without forming system Fine filter for oil-free compressed air for forming Valve assembly for sealing station Noise muffling of machine Water circuit including flow switch and blow-off valve Note: Vacuum pump not included, dies and forming plates for forming and sealing dies not included Electric basic equipment Power supply main switch lockable in control cabinet door as standard Solid State Relay for heating circuits as standard 4 installed temperature control loops with Solid State Relay as standard 5 emergency stop buttons as standard, in each case at infeed and discharge, on operator and control cabinet side, as well as at operating terminal Wire indication in the control cabinet according to EN , marking of all individual wires optional, see chapter electric. 1 synchronization kept free for urgent retrofits 6

7 4.2 Machine options Main drive Bottom web gripper chain Top web gripper chain Print registration top web Package Lifting Automatic chain lubrication Discharge Control Network access to control system Operating data acquisition (BDE) Central lubrication system Cleaning 3 Web packages Print registration top web Print registration bottom web Jumbo roll Labelling on top or bottom of pack Corner cutting for Easy Opening (EZO) Discharge area additional modules Loading area additional modules Transversal serrating knife Longitudinal serrating knife Circular and shape cutting unit Vacuum pumps Options to run PP based bottom web Hot printer 4.3 Recommended line assembly The R275CD is a stand-alone unit, but can be used in conjunction with additional loading and discharge equipment. 7