Solid Bleached Sulfate C1S Paperboard for Premium Packaging

What Is SBS C1S Paperboard?

Solid Bleached Sulphate (SBS) is a high-quality paperboard made from virgin wood pulp, with a brilliant white surface. SBS C1S paper has one coated side, providing a good base for vibrant, high-quality printing, and an uncoated side that can be used for writing or custom finishes. Its strength and printability make it ideal for luxury packaging and high-end product presentation.

Why Is C1S Paper The Best For Premium Packaging?

C1S paper is a unique product in the high-end packaging market thanks to its exceptional characteristics:

• Bright colours: The glossy coated surface makes logos and graphics vivid and bright.

• Flexibility: Customisable: It is ideal for custom coatings and finishes, such as embossing, foil stamping and spot UV.

• Strength and durability: C1S paper is made of SBS fibres, which make the packaging strong and durable and keep products safe during handling and shipping.

• Bright white surface: The SBS type has a bright white surface that can be printed on in great detail for branding and product information.

Put simply, SBS C1S paper offers the visual appeal, durability and versatility required for high-end packaging solutions.

Key Benefits Of C1S Paper

• Environmentally friendly: It is made from recyclable materials and is manufactured using a biodegradable, chemical-free process, which will attract environmentally-conscious consumers.

• Durability and strength: It provides durability against damage, moisture and wear, making it suitable for fragile products such as cosmetics and chocolates.

• Bright prints: The glossy finish makes colours richer and creates clear, bright images that are ideal for luxury branding.

• Cost efficiency: It uses less ink and accelerates the production process, making it cost-effective for large-scale packaging.

C1S Paper Is Ideal For Packaging

C1S paper is the perfect combination of strength, appearance and flexibility, whether it is used for luxury folding cartons, custom paper bags or protective inserts. High-quality printing is possible on its glossy side, and custom finishes can be applied to the uncoated side. C1S paper is ideal for packaging high-end products as it is durable and has a sophisticated appearance. This makes it suitable for a wide range of industries, such as cosmetics, electronics and gourmet products.

Technical Guide: Selecting the Right GSM for Your Packaging Requirements

GSM And Its Effect On Packaging

GSM (grams per square metre) is an important factor to consider when choosing C1S paper for packaging, as it determines thickness, durability, and suitability for various packaging applications. Selecting an appropriate GSM ensures that your packaging will be as durable and attractive as possible.

Lower GSM values produce lighter, more pliable paper, which is ideal for custom bags and sleeves. Higher GSM values produce stronger, more rigid paper, which is better suited to demanding tasks such as folding cartons or heavy-duty packaging.

GSM Table For C1S Paper

The following guide outlines the application of various GSM levels to thickness and the typical uses of C1S paper.

Finding the Right GSM for Your Packaging Needs

Low to mid-range GSM (210–250 g/m²)

For lighter packaging solutions, 210–250 g/m² is preferred:

• 210 gsm (0.27 mm): Suitable for lightweight paper bags, sleeves or product covers that need to be durable, flexible and economical.

• 250 gsm (0.33 mm): It is more durable and ideal for box inserts, book covers, and paper bags that require strength without compromising flexibility.

Higher GSM (300–400 g/m²)

The thickness and rigidity of the paper are directly proportional to the GSM. Therefore, 300–400 g/m² C1S paper is appropriate for more demanding packaging.

• 300 gsm (0.40 mm): It is strong enough to fold cartons or boxes used in high-end packaging to make products look good and provide protection.

• 350–400 g/m² (0.48–0.55 mm): These heavy-duty types are the best choice for high-value electronics, luxury items and cosmetics due to their high strength and structural integrity.

GSM selection: Industry Examples

• Luxury packaging: The 350–400 g/m² C1S paper is thick and durable, making it ideal for high-end cosmetics, perfumes, and tech products. The packaging is made of a durable material that gives the product a high-end appearance.

• Retail paper bags: For retail bags, 210–300 g/m² C1S paper is used. It is durable enough for frequent use, yet lightweight and affordable for retailers.

• Box inserts: 250–400 g/m² C1S paper provides the necessary sturdiness to ensure the safety of products in boxes, as well as the desired appearance of protection and professionalism.

C1S vs. C2S Paper

C1S (coated on one side)

• Weight and thickness: Usually between 210–400 g/m², though some mills offer weights as low as 170 g/m² and as high as 550 g/m². C1S is typically 0.1–0.15 mm thicker than C2S of equal mass and is more rigid.

• Colour: C1S is less white than C2S on the coated surface, although luxury packaging can be made very white using high-quality C1S.

• Printing performance: C1S provides good image quality on one side, but the reverse side is uncoated, which makes colours appear darker due to ink absorption.

• Coating: C1S only has simple finishes on the back, such as machine varnish and aqueous finishes.

• Cost: C1S is cheaper than C2S because it is easier to produce.

It is best suited to custom folding cartons, white paper bags and inserts that require only one printed side and are less expensive.

C2S (Coated Two Sides)

• Weight/thickness: generally 80–400 g/m². Although C2S has a denser paper fibre structure, it is thinner than C1S of the same weight.

• Colour: The colour is usually whiter than C1S, which is why it is a good choice when a product requires bright colour representation on both sides.

• Printing performance: C2S offers consistent, rich colour on both sides and lower ink absorption, making it suitable for double-sided printing.

• Coating: Coatings can be applied to both sides, providing a greater variety of finishes.

• Cost: C2S is more expensive due to the increased complexity of production.

• Best suited to: brochures, catalogues, book covers and other high-quality, double-sided printed materials.

The Environmental Impact And Sustainability Of C1S Paper

C1S paper is sustainable because it is both recyclable and biodegradable. It is produced using virgin or recycled fibres, which minimises waste and the consumption of resources. Compared to C2S, C1S uses fewer materials and coatings and reduces its carbon footprint. FSC- and PEFC-certified, C1S helps brands address the increasing demand for environmentally friendly packaging, in line with sustainability objectives, improving their image as environmentally friendly and gaining customer loyalty.

Conclusion

C1S paper provides durable, high-quality images and is sustainable at a cost-effective level. Boost your brand with attractive, durable packaging materials that are environmentally friendly. Contact Winpack Printing today to start designing your own packaging and demonstrate your commitment to quality and the environment.