Biodegradable and water-soluble are not two names for the same thing, and choosing the wrong one is common. The question to answer first is simple: does the pack need to disappear in water, or break down in a compost environment?
Water-soluble PVA film dissolves. Put it in water and the film is gone — that is what makes a detergent pod, a fishing bag or a hospital laundry bag work. The pack completes its job by vanishing in the wash or in the water it was thrown into.
Biodegradable and compostable film does not dissolve. It breaks down under composting conditions, over time, through biological action. It stays a solid object until then. That is the right behaviour for a dry product that is disposed of as waste.
| Specification | What we supply |
|---|---|
| Material route | Water-soluble PVA film, or biodegradable and compostable film for dry applications |
| Format | Bags and pouches, or film in rolls, made to your dimensions |
| Thickness | Set against the load and the barrier the product needs |
| Plain, or printed with branding and disposal information | |
| Product suitability | Assessed against your product — moisture, oil and shelf-life requirements |
| Target market | Material route chosen with the disposal rules of your market in mind |
The decision comes down to one question. Does the pack have to dissolve in water as part of how the product works? If yes — detergent pods, single-dose liquids, fishing bags, dye sachets, agrochemical packs, embroidery backing, laundry bags — then water-soluble PVA is the material, and no biodegradable film will do the job.
If the pack is handled dry, stays a solid object through its life and is disposed of as waste, then biodegradable or compostable film is the appropriate route. Barrier, shelf life and cost differ from PVA, and they have to be assessed against the actual product rather than assumed.
Where a customer needs both, we supply both, and we will tell you plainly which one fits your product rather than selling you the one we would rather make.
Tell us what you pack and how the pack is disposed of. We reply within one business day with a material recommendation and a sample plan. You test the samples on your own product. Bulk production starts only when the pack performs as agreed.
For the full comparison of the two routes, read PVA film vs biodegradable film: which one fits. For how dissolving grades are matched to water temperature, see PVA film grades: cold, warm or hot water?
The questions buyers ask most about this application.
No, and this is the most common misunderstanding. Water-soluble PVA film dissolves in water. Biodegradable film does not dissolve — it breaks down under composting conditions over time, remaining a solid object until it does.
When the pack has to dissolve in water as part of how the product works — detergent pods, single-dose liquids, fishing bags, dye sachets, agrochemical packs, embroidery backing and laundry bags. No biodegradable film can do that job.
When the pack is handled dry, stays solid through its life, and is disposed of as waste or compost. Barrier behaviour, shelf life and cost are assessed against the specific product rather than assumed.
Yes. We supply water-soluble PVA film and biodegradable or compostable film, and we will tell you which route fits your product rather than steering you to one.
What you pack — dry, moist or oily — plus how the pack is disposed of and where it is sold. Those three answers usually settle the material route before anything else is discussed.
Send your product, the pack size you need and your target quantity. We reply within one business day with a film recommendation, a sample plan and a quote.
Chat on WhatsAppor send the form — we reply within one business day
Sainsun PVA