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White core white board, scientifically known as Solid Bleached Sulfate (abbreviated as SBS), is a high-grade paperboard made from 100% bleached sulfate wood pulp. The surface layer, core layer and bottom layer all consist of homogeneous pure white fibers. Due to its overall pure white color and fine texture, it is sometimes mistakenly called "ivory board", but there are fundamental differences in raw materials and core layer color between the two. With its pure texture and excellent adaptability, SBS has become a core material in the field of high-end packaging.
Core Feature: Dual excellence in quality and performance
- **Ultra-pure appearance**: The entire surface is pure white without any impurities or color variations. The whiteness and brightness are outstanding, and it is accompanied by a fine and uniform coating layer. Whether it is CMYK four-color printing or spot color stamping, it can accurately reproduce the color gradations, making the patterns and text clear and sharp. The minimalist design and high-contrast visual effect fully demonstrate sophistication.
- **Stable Adaption Process**: Excellent surface strength, perfectly compatible with mainstream processes such as offset printing and UV printing. It also supports various post-processing operations such as die-cutting, creasing, laminating, and embossing. The product is less prone to edge cracking after forming and has good rigidity, providing ample space for packaging creativity.
- **Safety and Compliance Attributes**: Made from raw wood pulp without using recycled fibers. It complies with food contact standards and can be directly used for packaging of foods such as chocolate and tea. Some grades hold FSC/PEFC environmental certifications, meeting the requirements for green packaging.
**Specifications and Applicable Scenarios**
The common weight range is 200 - 400 g/square meter. It can be customized according to your needs. The mainstream types are divided into two categories:
- **C1S (Single Side Coating)**: Suitable for scenarios where only the outer surface requires printing or decoration, such as ordinary daily care product packaging boxes and low-end gift outer packaging.
- **C2S (Double Side Coating)**: Appropriate for high-end packaging where both the inside and outside need to be presented elaborately or where direct contact with food is involved, such as cosmetic sets, chocolate gift boxes, and luxury product inner boxes.
It is widely applied in fields such as cosmetics and fragrances, high-end food, gift packaging, and pharmaceutical packaging, and has also extended to more high-end scenarios. For example, the outer packaging of lipstick sets and perfume collections, when combined with gold stamping and embossing techniques, can quickly enhance the brand's quality; for premium tea and nut gift boxes, using it ensures both exquisite appearance and product quality preservation; for pharmaceutical folding paper boxes, it can meet both hygiene and printing requirements. Additionally, premium snack gift boxes (such as imported chocolate and cookie gift boxes) can highlight the product's high-end positioning with its pure texture; high-end stationery gift boxes and customized greeting cards can present delicate graphics and convey sentiments through their excellent printing compatibility. It should be noted that some high-end health supplement gift boxes may also choose SBS when pursuing ultimate texture, but more often it is based on specific design requirements and budget considerations.
**Key Points for Purchase and Use**
When purchasing, it is necessary to pay special attention to indicators such as whiteness, stiffness, and coating uniformity. It is recommended to obtain sample papers in advance for printing tests to confirm the compatibility of color and process; when storing, it is suggested to keep the relative humidity of the environment between 45% and 55%, avoiding drastic fluctuations, to prevent the paper from curling or deforming, and ensuring the stability of packaging processing effects.
The white core and white card, with their pure quality and all-round adaptability, have become the cornerstone of high-end packaging in terms of texture, helping brands convey value through packaging and achieving a dual upgrade in terms of visual and experiential aspects.