Paper plastic bags have become the Packaging of choice for products that need both rugged strength and a premium printed surface. At Zhejiang Saiqiang Plastic Co., Ltd., we manufacture paper plastic composite bags that combine the clean, natural look of kraft paper with the tear resistance of PP woven fabric — a combination that protects your product and elevates your brand.
Our paper plastic laminated sacks are built in layers: a kraft paper outer layer provides an excellent printing surface, while the PP woven inner layer delivers high tensile strength. The two are bonded with a food-grade adhesive, so the paper face does not delaminate when the bag is filled, dropped or stacked. An optional PE film liner of 30 to 80 microns creates an effective moisture barrier, keeping contents dry and fresh during storage, handling and long-distance shipping. This composite structure makes our kraft woven composite bags stronger than pure paper bags and more premium than plain woven sacks.
| Specification | Range | Notes |
| Outer paper | 50 – 100 gsm | White bleached or natural brown kraft; heavier paper takes deeper print |
| Woven core | 50 – 120 gsm | Carries the load; raise the weight for 25 kg and 50 kg fills |
| Inner liner | PE, 30 – 80 microns | Optional; needed for hygroscopic powders and food contact |
| Capacity | 1 kg – 50 kg | Retail packs and industrial sacks from one construction |
| Bag styles | Back-sewn, side-gusseted, block bottom, valve, open-mouth | Match the style to your filling line, not the other way round |
| Printing | Flexographic, up to 8 colours | Full-surface coverage on the paper face |
As a paper plastic bag supplier working with brand owners in export markets, we offer custom printed paper plastic bags with sharp, full-colour flexographic printing for your logo, artwork, barcode and product information. Whether you need kraft woven composite bags for retail shelves or industrial paper plastic composite bags for bulk goods, the paper surface holds fine type and dense colour blocks that plain woven fabric cannot reproduce.
Our paper plastic bags are widely used for pet food and animal feed, cement and dry mix, seeds, flour and grains, chemical powders, fertilizers, sugar and food ingredients. With custom sizes and fabric weights, we match the bag to your filling line and your end users needs.
Fine powders are the other natural home for this construction. A composite bag for pigment — titanium dioxide, carbon black or iron oxide — carries the load on the woven core while the paper face keeps the print crisp and the surface clean, and an inner liner stops fine dust migrating through the seams.
Start from the fill weight, not the bag size. A 25 kg sack of dense pigment needs a heavier woven core than a 25 kg sack of flour, because the same weight takes far less volume and pushes harder on the seams. Set paper weight by print demand: 50 to 70 gsm suits one or two colours, while photographic artwork reads better on 80 to 100 gsm. Add a PE liner of 30 to 80 microns when the product cakes or loses potency in humid air, and skip it when the product must breathe. Choose the style by filling method: valve for automatic lines, open-mouth for manual sewing, block bottom where the bag must stand. Confirm a 1.2 m loaded drop test, because paper-to-woven bond strength decides whether a seam survives handling.
The costliest error is specifying paper weight and forgetting the woven core: paper controls how the bag looks, the core controls whether it survives the pallet. The second is adding a liner to a product that must breathe — freshly milled flour releases moisture and will sweat inside sealed PE. The third is artwork without bleed or trapping, which means a reprint once plates are cut. The fourth is running one size across several pack weights, then finding the 50 kg version tears at the gusset. And note the minimum: 500 pieces per size and print run.
There is no single list price, because four variables move the number: bag size, paper weight from 50 to 100 gsm, woven core weight, and the number of print colours up to eight. An inner PE liner adds a further step. Send your dimensions, fill weight and annual volume and we will quote the exact construction rather than a generic range. Minimum order is 500 pieces per size.
Products that need strength and a clean printed face: cement and dry mix, animal feed, flour, rice, sugar, seeds, chemical powders, titanium dioxide and other pigments. Retail packs from 1 kg through industrial 50 kg sacks use the same construction, so a brand can keep one look across its whole range without changing suppliers.
Yes. We print flexographically in up to eight colours directly on the kraft paper face, which handles logos, fine type, barcodes and large solid areas. Supply vector artwork with bleed and we will return a proof before plates are cut. Uncoated natural kraft shifts colours slightly warmer than white paper, so ask for a paper-matched proof.
Minimum order is 500 pieces per size and print run, which keeps a trial order affordable before you commit to volume. To start, send the bag dimensions, target fill weight, product type and monthly volume. We confirm the construction, send a sample for filling trials, and only then schedule production.
Tell us the fill weight and the market you sell into, and we will recommend the paper weight, woven core and liner that fit. You can review the full specification range or send your bag dimensions for a quotation.
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