Shrink-Wrapping Machine

Perform general operational controls verification testing. 

Operate system throughout the range of operating design specifications of shrink-wrapping speed, temperature, and vacuum, or the range of intended use. 

Verify that all safety devices of the shrink-wrapping machine are operating as specified in the manual. 

Perform controller security challenges to verify that specified parameters cannot be altered without appropriate supervisory control. 

Perform inspection to check the shrink-wrapping on each product as per SOP. 

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Shrink wrapping machine Over printing machine Trays and rack washer Autoclave (steam sterilizer)... 

To describe the procedure for validation of the shrink wrapping and bundling machine to ensure that it meets installation, operational, and performance qualification requirements... 

For a shrink wrapping and bundling machine, the following critical points can generally be identified ... 

The next machine on the line is the packer, which collates the bottles into the required sales unit (often 12 or 24 bottles). Sales units are generally shrink-wrapped trays, cardboard cartons or crates for returnable bottles. These are stacked on pallets for ease of distribution and storage. 

To gain maximum efficiency from a production line it is normal for the machinery upstream and downstream of the filler to ran faster than the filler and to provide accumulation between machines so that minor stoppages (for example changing the shrink-wrap reel) can be accommodated without stopping the filler. Figure 8.9 illustrates this for the factory layout shown in Figure 8.8. 

Polyethylene, as LDPE, LLDPE or a mixture or blend involving combinations of LDPE, MDPE, HDPE, EVA, etc., finds a wide usage in bags, sacks, sachets, overwraps, shrink wraps, stretch wraps, etc. Most deep freeze packs, for example, use LDPE or an LDPE mixture which is produced from a reel on a form fill seal type machine. However, as many of these packs are up to 100% printed, even ink of 2-5 Pm could be considered as a separate layer which modifies some of the physical and chemical properties. As all polyolefins need a surface (oxidative) treatment to ensure a good print key, this or any other surface treatment process may further modify the film properties. 

The first machine in any such shrink-wrap packaging line is an automatic palletizer which, for this purpose, must be able to complete the stack — composed of five-sack layers - with a final layer containing only three (or four) sacks. 

Skin packaging is a combination of a pol3mier film sleeve with a bottom liner (cardboard or sheet polymer). The article is placed on the card liner and is wrapped into the inhibited shrinkage sleeve (Fig. 2.55a). The film ends are fixed on the card, which can also be made of an inhibited material. During heating the film shrinks skin tight around the article. Skin packaging is used for small-size machine parts, spares, tools etc. 

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