PERBANDINGAN DAYA REKAT ADHESIVE SOLVENT BASE, SOLVENT FREE DAN WATER BASE PADA KEMASAN FROZEN FOOD BERBAHAN NYLON - LLDPE

ABSTRAK
Multilayer flexible packaging is an important solution in maintaining the quality and safety of Frozen food products during distribution and storage. Adhesives play a crucial role in bonding plastic films such as Nylon and LLDPE, especially in the face of extreme conditions such as low temperatures. This study aims to compare the performance of three types of Adhesive, namely solvent-based, solvent-free, and water-based, used on Nylon-LLDPE-based packaging structures. Tests were conducted through several methods, such as bonding strength, sealing strength, and visual observation of the possibility of delamination after storage at -18°C for 12 days. Results showed that the solvent-free Adhesive gave the best overall performance, with very strong bonding strength (could not be separated manually), the highest initial sealing strength (6084.9 gf), and no delamination symptoms during storage. The solvent-based Adhesive performed moderately well but experienced a gradual decrease in sealing. Meanwhile, the water-based Adhesive had the lowest performance with the appearance of delamination symptoms after one week of storage. Based on the results of this study, solvent-free Adhesive is recommended as the best choice for Frozen food packaging made from Nylon-LLDPE as it has high resistance to low temperature and is environmentally friendly. without generating VOC emissions.
Keywords: Adhesive, lamination, solvent-free, nylon, LLDPE, Frozen food.

Kemasan fleksibel multilayer merupakan solusi penting dalam menjaga kualitas dan keamanan produk makanan beku selama proses distribusi dan penyimpanan. Adhesive atau perekat memiliki peran krusial dalam mengikat antar lapisan film plastik seperti Nylon dan LLDPE, terutama dalam menghadapi kondisi ekstrem seperti suhu rendah. Penelitian ini bertujuan untuk membandingkan kinerja tiga jenis Adhesive, yaitu solvent-based, solvent-free, dan water-based, yang digunakan pada struktur kemasan berbahan dasar Nylon-LLDPE. Pengujian dilakukan melalui beberapa metode, seperti uji kekuatan daya rekat (bonding strength), kekuatan segel (sealing strength), serta pengamatan visual terhadap kemungkinan terjadinya delaminasi setelah penyimpanan di suhu –18 °C selama 12 hari. Hasil menunjukkan bahwa Adhesive solvent-free memberikan kinerja paling unggul secara keseluruhan, dengan daya rekat sangat kuat (tidak dapat dipisahkan secara manual), kekuatan sealing awal tertinggi (6084,9 gf), dan tidak menunjukkan gejala delaminasi selama penyimpanan. Adhesive solvent-based menunjukkan performa cukup baik namun mengalami penurunan sealing secara bertahap. Sementara itu, Adhesive water-based memiliki performa terendah dengan munculnya gejala delaminasi setelah satu minggu penyimpanan. Berdasarkan hasil penelitian ini, Adhesive solvent-free direkomendasikan sebagai pilihan terbaik untuk kemasan makanan beku berbahan Nylon-LLDPE karena memiliki ketahanan tinggi terhadap suhu rendah serta ramah lingkungan tanpa menghasilkan emisi VOC.
Kata kunci: Adhesive, laminasi, solvent-free, nylon, LLDPE, Frozen food.