01 / OPTION
Base and capacity
The base needs to support the product; height allows the required closing space.
Discuss your requirements ↗Plastrum / Self-opening paper bags (SOS bags)
Base opened.
Goods inside.
Bag ready.
Block-bottom SOS paper bags suit packing goods and takeaway food. We select dimensions, paper and printing according to contents and filling method.
Dimensions, material and printing tailored to your project.
From idea to delivery.One contact for your entire order.
Product example. The exact solution and design are agreed with you to suit your project.
Over 25 years of packaging experienceManufacturer selected for your projectOrder and delivery coordination
01 / Your options
Three choices. Your solution.
We combine use, material and design into a suitable solution.
02 / OPTION
Paper and contents
Paper properties are selected according to product weight, moisture and fat content.
Discuss your requirements ↗
03 / OPTION
Filling and logo
Bag opening and design are matched to hand or machine filling.
Discuss your requirements ↗02 / A considered solution
Base opened. Goods inside. Bag ready.
Include product, bag dimensions, fill weight, closing method, quantity and printing.
Discuss your requirements ↗- Use and dimensions
- We start with the product and how the packaging will be used.
- Material and construction
- We select a suitable solution for the required strength, protection and appearance.
- Printing and artwork
- Add a logo or artwork reference. We agree the technical options before production.
- Quantity and deadline
- Provide the quantity and delivery date you need. We confirm order terms in the quotation.
03 / Easy to order
From your requirements to delivery.
01
Send your brief
Describe the use, quantity and deadline. Add a sample, drawing or artwork.
02
We compare solutions
We select suitable production options and prepare a quotation.
03
We confirm the details
We agree the specification, any sample, printing and delivery schedule.
04
We coordinate your order
We liaise with the manufacturer and arrange delivery to the agreed destination.
04 / Good to know
Questions before you order.
We clarify the important details before production starts.
How does barrier paper differ from kraft paper?
Kraft is a standard choice for many applications. Barrier paper adds grease and moisture resistance for products containing oil or moisture.
Can SOS bags carry our logo?
Yes. Flexographic printing in up to 8 colours can add logos or full designs.
Are SOS bags suitable for food?
Yes, with a paper grade documented as suitable for the intended food contact, including bakery and dry products.
What is the minimum order quantity?
The minimum depends on dimensions, material, printing and production method. Include your required quantity; the exact minimum is confirmed in the quotation.
When will my order arrive?
Include your required arrival date. Production and delivery timing are confirmed after the specification and artwork are agreed.
Open detailed technical information and product description
Technical overview of self-opening paper bags (SOS bags): materials, construction, printing and lead times.
Technical information
Minimum order quantity
- Printed production: from 5,000–10,000 pieces, depending on construction
- Digital printing on stock products: from 50 pieces
- Custom designs and sizes quoted per project
Dimensions and construction
- Upright block-bottom SOS construction
- Wide base for stable filling and transport
- Different heights and widths to suit requirements
- Flap or open-top options
- Straight sides for orderly filling and stacking
Materials
- Kraft paper 60–90 g/m², brown or white
- Food-contact paper for bakery and dry products
- Barrier paper for grease- and moisture-resistant applications
- Materials with documentation for the intended food-contact use
Printing options
- Flexographic printing in 1–8 colours
- Pantone references for brand colour matching
- CMYK printing for detailed designs
- Logos, full designs and repeating patterns
- Large print area on smooth bag surfaces
Finishing
- Natural or matt kraft paper
- Reinforced base for stability
- Perforated and folded options
- Different opening and closure options
Lead times
- Typical standard production: 3–6 weeks
- Seasonal variation is possible
- Urgent orders by agreement with the producer
Artwork files
- CMYK, 300 dpi
- Bleed: 3–5 mm
- File formats: PDF, AI, EPS
- Technical checks and artwork preparation support
Applications
- Bakery and confectionery products
- Dry foods and retail goods
- Cafés and takeaway services
- Gifts and handmade products
- Grocery and delicatessen packaging
Self-opening paper bags — choosing the material and size
Self-opening paper bags, also known as SOS bags, provide efficient, stable packaging where fast workflows, easy handling and consistent quality matter. Custom sizes and personalised printing are available. Select the paper grade to suit your product.
Paper type, food-contact suitability and barrier properties
Kraft paper (60–90 g/m², brown or white) is a standard choice offering strength and foldability. Food-contact paper suits bakery and dry products where material purity and food-contact suitability matter. Barrier paper provides grease and moisture resistance where oil or moisture would otherwise penetrate ordinary paper.
Dimensions and construction
The block-bottom SOS construction allows the opened bag to stand upright, making filling convenient on production lines and in retail settings. A wide base supports stable filling and transport. Different heights and widths, open-top or flap options and straight sides support orderly filling and stacking.
Branded SOS paper bags
Flexographic printing in up to 8 colours and Pantone references support logos and brand designs; CMYK printing suits detailed artwork. The smooth construction provides a large print area for logos, full designs and repeating patterns.
Applications
Bakery and confectionery products: food-contact materials selected to protect product quality.
Dry foods and retail goods: strong construction for efficient packing.
Cafés and takeaway services: quick, practical packaging.
Gifts and handmade products: attractive branded paper bags.
Grocery stores and delicatessens: packaging that complements product quality.
Plastrum — your paper bag partner in the Baltic and Nordic countries
Plastrum coordinates production with European partners and helps select materials, dimensions and printing for your technical requirements and packing process. We aim to match practical performance with your brand identity.
Frequently asked questions
How does barrier paper differ from kraft paper?
Kraft is a standard choice for many applications. Barrier paper adds grease and moisture resistance for products containing oil or moisture.
Can SOS bags carry our logo?
Yes. Flexographic printing in up to 8 colours can add logos or full designs.
Are SOS bags suitable for food?
Yes, with a paper grade documented as suitable for the intended food contact, including bakery and dry products.
Can the bag stand during filling?
Yes. The opened block-bottom SOS construction allows the bag to stand upright for convenient filling.
05 / Tell us about your project
Request a quotation
Include product, bag dimensions, fill weight, closing method, quantity and printing. You do not need to have every detail decided yet.
Berni Valge · Plastrumberni@plastrum.ee ↗+372 514 0521
Plastrum selects a suitable manufacturer and coordinates the order and delivery.
Self-opening paper bags (SOS bags)
Describe your requirements in the message. Attach artwork, a photo or a specification.
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