Starlinger - Technology for Polywoven Pinch Bags PP*STAR

What is perfect consumer packaging all about? It should protect the content, make the product appealing to the buyer, and be eco- nomic in production. For the packaging of dry bulk goods destined for the end-consumer market, there is one solution that meets all requirements head on: PP*STAR ® . The PP*STAR ® concept unites the best qualities of woven polypropylene tape fabric and printed BOPP film to create a cutting- edge packaging material for dry bulk goods sold in the retail sector. Designed as pinch bottom bags, PP*STAR ® bags are perfectly suited for packaging dry pet food or fertil- izer, but also meet the requirements of other products such as seeds, flour, sugar, or rice. Light, strong, attractive, eco-friendly The trend in packaging materials goes to- wards reducing their weight – less weight means less input material. The result: lower raw material costs and a positive environ- mental impact. The challenge in reducing the weight of a packaging material is to maintain its impor- Cutting-edge packaging for dry bulk consumer goods tant properties such as tensile strength and tear resistance, while at the same time the material layer becomes thinner and lighter. In applications where bulk goods are pack- aged in bigger quantities, and especially if these goods need adequate protection against environmental influences or break- age, there has been no way around multi- wall paper bags or thick plastic sacks. Until now. A composite of BOPP-laminated polypropylene tape fabric like PP*STAR ® is strong enough to carry high quantities of content, making multiple-layer packaging no longer a necessity. An average single- layer PP*STAR ® bag that holds 25 kg of content weighs only 118 g – a weight reduction of more than 55 % compared to a 4-ply paper sack of the same size. Pinch bottom with a special touch The Starlinger PP*STAR ® bag is a pinch bottom bag made of polypropylene tape fabric that is covered with printed BOPP (biaxially oriented polypropylene) film. Its unique strength and stability derive from the special characteristics of tape fabric: in the extrusion process the polypropylene tapes are stretched and oriented which increases their tensile strength. Then tubu- lar tape fabric is produced out of them. In the next step, BOPP film – reverse printed to protect the print motif – is bonded to the tape fabric by means of a tie layer of finely extruded polypropylene. The result: an attractive, lightweight and break-proof packaging solution with unrivalled tear growth resistance and punch strength. From bottle to pinch bottom bag With Starlinger’s woven PET packaging production technology it is possible to pro- duce PP*STAR ® bags out of virgin PET as well as rPET pellets and PET bottle flakes. Made of PET/rPET tape fabric bonded with reverse printed BOPET film, PP*STAR ® PET bags have • • an excellent aroma barrier • • a stunning shelf appearance • • higher stiffness – lighter, thinner bags, and improved handling on filling lines • • are made of recycled material and can be recycled again • • are food-safe thanks to Starlinger PET deconatmination technology. Today’s trend in packaging materials – be it paper or plastic – is towards reducing their weight. A logical step: Less weight means less input material and waste and thus pro- vides a way to reduce production costs.

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