Classic packaging film is a laminate: PET on the outside for strength and printing, PE on the inside for sealing. Strong, cheap, versatile \u2014 and non-recyclable, because the two different plastics are permanently bonded; recyclers reject it as waste. Exports to Europe now demand recyclable packaging; local retailers are starting to ask. The industry's answer: three families of sustainable films, each one changing how packaging machines operate.<\/p>\n
Sustainable position on the internal product map Sustainable packaging solutions<\/a>; practices of the snack industry in the field Sustainable practices in the snack food industry<\/a>.<\/p>\n A material (polyethylene) from the outside in, with a thin EVOH barrier layer in the middle that accepts recycled flow. Seals at a higher temperature than standard laminates (approximately 130\u2013160 \u00b0C) and with a narrower sealing window \u2014 the machine jaws need to be recalibrated, not replaced. This is the top choice for export brands' dry bags: chips, cereal, coffee.<\/p>\n Paper with a thin barrier layer (dispersible or PE separable). Machine effects: stiff paper \u2014 the forming shoulders of vertical form-fill-seal (VFFS) machines and flow pack forming plates require adjustment; the sealing jaws press differently; rejection rates (film tears, misaligned seals) increase during the first week of changeover. After tuning, the paper runs steadily\u2014but speed drops 10\u201320% compared to plastic on most lines. Comparison of horizontal format in Flow pack packaging machine<\/a>.<\/p>\n Plant-based films (PLA, PBAT, starch) that decompose in compost facilities. Not a universal solution: weaker moisture barrier, limited shelf life for the film itself (store in a cool, dark place and use within 6\u201312 months), and the highest price per kg. Compost certification comes from the film supplier \u2014 ask for documentation, don't accept verbal claims. Suitable for tea sachets, pouches, and short-shelf-life products.<\/p>\nThree sustainable film families<\/h2>\n
1. Mono-PE \u2014 fully recyclable<\/h3>\n
2. Laminated paper \u2014 natural image<\/h3>\n
3. Compostable \u2014 for proper application<\/h3>\n
| Family<\/th>\n | Can be reused<\/th>\n | Obstacle<\/th>\n | Film costs<\/th>\n | Machine trouble<\/th>\n<\/tr>\n<\/thead>\n |
|---|---|---|---|---|
| Old PET\/PE laminate<\/td>\n | no<\/td>\n | tall<\/td>\n | cheapest<\/td>\n | Common reference<\/td>\n<\/tr>\n |
| Mono-PE<\/td>\n | yes (PE stream)<\/td>\n | moderately high<\/td>\n | +10-30%<\/td>\n | Just adjust the temperature.<\/td>\n<\/tr>\n |
| Laminated paper<\/td>\n | yes (paper flow)<\/td>\n | simple<\/td>\n | +20-50%<\/td>\n | shoulder\/plate + speed<\/td>\n<\/tr>\n |
| Compost<\/td>\n | Compost, not recycling<\/td>\n | low-to-moderate<\/td>\n | highest<\/td>\n | Lock + tight security<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nWhat's changed on the machine \u2014 and what hasn't<\/h2>\nPractical conclusion: Existing machines can almost always change film.<\/strong> \u2014 what's expensive is the setup and testing time, not the machinery. A machine supplier who refuses to run a film-stamping test on your line is telling you something.<\/p>\n Premium bag format with a zipper and an internal valve. Pre-formed bag packaging machine<\/a> Also tracing the monomaterial configuration \u2014 the zipper structure being the same as the bag body becomes a prerequisite for recycling. General specifications of the in-family machine. automatic packaging machine<\/a>.<\/p>\n Can my old VFFS machine run mono-PE?<\/strong><\/p>\n J: Almost always, yes \u2014 set the jaw temperature (higher) and pressure; a trial roll test confirms it within a day. The cost is in parameters and time, not machinery.<\/p>\n Paper suitable for vertical VFFS?<\/strong><\/p>\n J: Suitable for the grooved forming shoulder, with speed reduced by 10\u201320%. The horizontal flow pack format is more paper-friendly because the pull force is lower \u2014 see the comparison in the flow pack article.<\/p>\n Is a mono-PE barrier enough for coffee?<\/strong><\/p>\n J: For 200\u2013250 g coffee bags with one-way valves, mono-PE with EVOH achieves a shelf life of 9\u201312 months\u2014determined by oxygen testing of your blend. The finest aromas still favor the AL laminate.<\/p>\n Does compost film spoil if stored for a long time?<\/strong><\/p>\n J: Yes \u2014 compost is designed to expire. Store it cool, dark, and dry, and use it within 6\u201312 months of the roll date; buying small amounts more often is better than buying a full pallet at once.<\/p>\n Sustainable packaging solutions<\/a> | Sustainable practices in the snack food industry<\/a> | Flow pack packaging machine<\/a> | Pre-formed bag packaging machine<\/a><\/p>\n |