PS, BOPS ,HIPS ,The Versatile Application of PS Film in Food Blister Packaging and Seedling Trays

1. Introduction

In the modern world, packaging materials play a vital role in protecting and preserving various products.

 PS film, with its unique characteristics, has found extensive use in both food blister packaging and seedling trays. The food industry demands packaging that not only keeps food fresh and safe but also presents it attractively to consumers. In the horticulture industry, for instance, seedlings require an environment in the seedling trays that provides an ideal temperature for development. PS film has continually provided a sure way to all these variant requirements.

2. Properties of PS Film
2.1 Physical Properties

The clarity of PS film is very great, and transparency is good;. The great clarity allows consumers to view clearly the food product packaged in this pack format with improved presentation of goods to choice or selection by the end consumers. In fresh fruits and vegetable or bakery products, 

where freshness is everything, a PS film's clear package will allow good content to be shown through this packing form. A fair film is relatively less dense which translates to less cost with applications in high-volume packages of food. 

The polymer exhibits good stiffness and also gives very good dimensional stability to the packs and therefore protects the packed goods and retains its shape on handling and transportation.

2.2 Chemical Properties

PS is chemically inactive, hence it has no reaction with most foods contained in it. This nature of PS is one welcome option in food packaging since maintaining food integrity and safety depends so much on this property.

 It is resistant to acids, bases, and many common solvents; thus, it is suitable for packaging a wide variety of food products. In seedling trays, the chemical stability of PS film allows it to resist the action of fertilizers, pesticides, and other chemicals in use within horticulture without degradation or leaching harmful substances into the soil or affecting the growth of the seedlings.