The common structures of 300g kraft paper boxes include slotted paper boxes, nested paper boxes and folding paper boxes. The slotted paper box is composed of a piece of corrugated cardboard, which is formed by stapling or gluing to form the main body of the paper box, and the swing cover can be easily opened and closed; the nested paper box is composed of several parts, usually an outer box and an inner box, which are assembled by nesting and are suitable for packaging larger or heavier items; the folding paper box can be folded up when not in use to save storage space, and then unfolded when in use.

Quality standards for producing 300g kraft paper boxes:

Appearance quality:

The surface of the paper box is flat, without obvious wrinkles, damage, stains and color difference. The printed pattern and text are clear and accurate, without defects such as missing printing and ghosting. The shape of the paper box is regular, the four corners are vertical, and the sides are parallel.

Dimensional accuracy:

The length, width and height of the paper box meet the design requirements, and the dimensional deviation is controlled within the specified range. The size deviation of ordinary cartons is allowed to be between ±3-±5mm, and the specific value depends on the specifications and usage requirements of the cartons.

Physical properties:

including compressive strength, bursting strength, puncture strength and other indicators. The compressive strength of 300g kraft cartons is usually required to be between 1500-2500N, the bursting strength is about 2.0-3.0kPa, and the puncture strength is between 4-6J.

When choosing, it is necessary to consider the characteristics, weight, mode of transportation and other factors of the packaged items to ensure that the carton can provide good protection and packaging effect.

What items are suitable for packaging in 300g kraft paper box?

Mechanical parts:

Various mechanical parts made of metal or plastic materials, such as auto parts, industrial equipment accessories, etc.;

Daily necessities:

liquid daily necessities such as shampoo and shower gel, as well as collective packaging of daily necessities such as toothpaste, toothbrushes, and towels;

Crafts:

Crafts such as ceramics and glass products can also be packaged in cartons after taking buffering protection measures.

For the convenience of users, the size specifications can be customized.

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