Selection Guide for Barrier Films for High-Fat Ingredients: Key Points on Materials, Application Scenarios, and Costs for Coffee and Beverage Manufacturers

High-fat ingredients are susceptible to the effects of oxygen, light, and temperature, and their flavor and aroma are easily compromised by the oxidation of oils and fats. For coffee beans, ground coffee, creaming powder, beverage ingredients containing dairy components, etc., barrier performance is required that takes into account not only the shelf life but also temperature changes during transportation and display conditions at retail stores. The first step in selection is to sort out the deterioration factors of your company’s products and clarify the priority items among oxygen barrier properties, light-shielding properties, and oil resistance.

As material options, composite films using aluminum foil have high light-shielding and gas barrier properties, and are suitable for coffee products that focus on long-term storage and aroma retention. If transparency needs to be ensured, transparent barrier films vapor-deposited with alumina or silica are candidates. Multi-layer co-extruded films can easily be endowed with oil penetration prevention and impact resistance by adjusting the thickness structure. Seal strength, puncture resistance, printability, and running performance on automatic packaging machines also affect actual use, so it is advisable to conduct confirmation under conditions close to actual machine operation rather than relying solely on catalog values.

In terms of cost, with the increase in the structure of barrier layers and processing procedures, the material unit price tends to be higher than that of ordinary single-layer films. Especially when performing special vapor deposition, multi-layer structure processing, or small-batch printing and bag making, it is necessary to obtain quotations including setup and loss costs. In addition, if a structure that meets the required barrier performance while reducing the thickness of packaging materials is considered, benefits may also be obtained in terms of transportation efficiency and waste volume.

Regarding the procurement schedule, a certain amount of time is required from material grade selection, sample production, packaging suitability testing to quality confirmation. When launching new products or switching packaging materials, it is advisable to coordinate specifications with suppliers earlier than ordinary material ordering, and also confirm the inventory system and availability of alternative materials to ensure stable supply. Ultimately, it is important to comprehensively evaluate the product’s quality retention period, compatibility with the packaging line, and procurement conditions, and make selections that avoid over-performance.