Cover Image
close this bookThe Packaging of Fruit Juice and Non-Carbonated Fruit Drinks (CDI, 1998, 87 p.)
close this folderIII. THE DIFFERENT TYPES OF PACKAGING
close this folderB - LONG SHELF-LIFE PRODUCTS WITH PRESERVATIVES
View the document(introduction...)
View the document6. Polyethylene film pouch
View the document7. PVC bottle
View the document8. PET bottle

(introduction...)

Definition:

These products can be kept at room temperature for several months thanks to the presence of chemical preservatives. Most of these products are mainly fruit drinks with addition of sugar and water.

Principle:

This type of treatment is mainly used for fruit drinks with a greater degree of dilution; the pH being often greater than 5, it is necessary to decrease it to less than 4.2. The preservative is usually added before pasteurisation and processing is carried out at low temperature. The preservatives are selected on the basis of two criteria:

· The prevention of the development of bacteria, mould or yeasts in the product.
· The prevention of the effects of oxidation on the product.

Advantages:

· Simple technology and installation
· Possibility of packaging for low output production (reduced initial investment)
· Possibility to choose cost-effective packaging materials (PE bag)
· Product can be stored at room temperature

Disadvantage:

· Use of chemical additives (see annex 3)

6. Polyethylene film pouch

TECHNICAL FILING-CARD N° 6

B - Cold packaging with preservative

DATA

DESCRIPTION

REMARK

Description

The pouch is pre-formed from a film, filled, sealed and dated/coded by the same machine

The film can be transparent rendering product visible

Composition

LDPE* film, thickness 70 to 90 microns

Film is presented as a reel, 18 to 20 kg, protected by a plastic envelop

Cost price

1.75 to 2 $./kg of film or 0.5 to 0.63 p. for 1 pouch 200 ml (3.5 gr.)

The least expensive packaging material; this film is manufactured in some African countries

Shelf-life

3 to 4 weeks (poor barrier to oxygen and UV rays)

Inventory turnover must be fast (max. 1 week from production to consumption)

Volume

Any volume is possible from 60 ml to 1 litre

The most common are the small volumes up to 200 ml

Packaging machine output

500 pouches/hr for the smallest, then 750, 1200, 1500, 2200 etc., up to 12000 pouches/h

All packaging machines are automatic ("form, fill & seal")

Capital investment for packaging machines

From £ 12.5 k for the smallest up to £250 k for the larger packaging machines.


Recommended or essential outer pack

Plastic crate 10 to 20 litres or plastic bags 2 to 5 litres.


Positioning of the product on the market

- The product is distributed through itinerant vendors equipped with an insulated box; this system is the cheapest and the most adapted for the informal distribution
- Can be stored in deep freezers and sold as "lolly", especially appreciated by children.

The product is first of all a refreshing drink to be sold at the best price. It is processed from fruit concentrate or flavour, strongly diluted, sweetened and sometimes coloured, then packed into very small volumes (60 to 200 ml)

Positioning in relation to the environment

The best packaging material (100 % incinerable without release of chlorine)

It is advised to provide vendors with dustbins in order to collect the empty pouches after drinking

* See glossary


N° 6: Plastic pouch from a film


N° 6: Polyethylene Film Pouch

7. PVC bottle

TECHNICAL FILING-CARD N° 7

B - Cold packaging with preservative

DATA

DESCRIPTION

REMARK

Description

Square, round or rectangular-shaped bottle with grooves to strengthen mechanical resistance

Dull crystalline colour which can be tinted (blue, green)

Composition

- Food "compound" composed of a blending of PVC* resins + additives (stabilisers, lubricant, anti-UV, colouring)
- PE or PP cap with inviolability device

Cost price

Approx. 0.93 £./kg foods compound for one bottle of:

Summary for 1 bottle ¼ l


- 1,5 litre (45 gr.):

4.25 p.

- body:

144


- 1 litre (30 gr.):

2.75 p.

- cap:

0.88


- ¼ litre (15 gr.):

1.44 p.

- label:

0.25


- Cap:

0.88 p.

total:

2.57 pence


- Label:

0.25 p.



Shelf-life

3 to 6 months

Impermeability and inviolability of the bottle determine good preservation and consumer security

Volume

1.5 litres, 1 l, ½ l, ¼ l

Also available in 5 & 10 litres

Bottle production

Blow-moulding from 500 bottles/hr

Packaging machine output

From 500 l/hr

Capital investment for the smallest machines

- Blow-moulding of the bottle: £ 81.25 k
- Blow-moulding of the cap: £ 110 k
- Packaging line (filling, capping, labelling) £56 k

- Price of 1 mould: approx. £5 k
- For the smallest production, it is advisable to buy the ready-made cap

Recommended or essential outer pack

Shrinkable film, carton, pallet


Positioning of the product on the market

Fruit drink mainly designed for family consumption (large volume/low cost); this type of packaging is mostly used for mineral water

More and more replaced by PET

Positioning in relation to the environment

- Manufacturing waste is reinjected into the compound
- Bottles are destroyed by incineration (problem of hydrochloric acid rejection)

PVC is now forbidden in most European countries

* See glossary


N° 7: PVC bottle

8. PET bottle

TECHNICAL FILING-CARD N° 8

B - Cold packaging with preservative

DATA

DESCRIPTION

REMARK

Description

Squared, round or rectangular-shaped bottle; PET* has excellent mechanical resistance and gas proof qualities; its appearance is close to glass

Bottle production is composed in 2 stages(8):
a) injection at 270°C into a mould to obtain a small-sized pre-form (see picture)
b) hot stretching of the pre-form at less than 100°C followed by the air blowing

Composition

- PET: polyethylene terephtalate
- PE or PP cap with inviolability device


Cost price

Pre-form cost:

Summary bottle ¼ litre

- 1,5 litre:

> 11.25 p.

- body:

5 p.


- 1 litre:

> 8.13 p.

- cap:

0.88


- 1/2 litre:

> 6.25 p.

- label:

0.25


- 1/4 l:

> 5 p.

total approx.

6.13 pence


- Cap:

0.88 p.

Only the larger sizes are worthwhile


- Label:

0.25 p.


Shelf-life

More than 6 months

Volume

1.5 litres, 1 l, ½ l, ¼ l, 200 ml

Packaging machine output

From 600 litres/hr

Capital investment for the smallest machines

- Bottle manufacturing plant from the pre-form 600 l/hr: £ 212.5 k
- Packaging line (filling, capping, labelling): £ 56.25 k

For a small production, it is advisable to buy the ready-made cap

Recommended or essential outer pack

Shrinkable film, carton, pallet


Positioning of the product on the market

Fruit drink designed mainly for family consumption (large volume/low cost); Competition with the drink-can (small volume)

Replaces the PVC, mainly on the mineral water market

Positioning in relation to the environment

- Possibility of recycling for the same or a secondary utilisation
- Bottles are destroyed by incineration (good calorific power)

Test-production of textile from the recycled PET fibre

* See glossary


N° 8: PET Bottle