Envelopes (C4), self-adhesive strip, possibility to have 100% recycled

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Envelopes (C4), self-adhesive strip,  possibility to have 100% recycled

Technical Parameter

Details

Envelope Type

C4 size

Adhesive Feature

Self-adhesive strip, providing easy closure without the need for additional glue or adhesive materials

Material Composition

Base material: Can be made from 100% recycled paper if specified. The recycled paper is typically sourced from post - consumer waste paper, which is processed and refined to meet the required strength and quality standards for envelope production. coating (if any): For the self - adhesive strip, it may have a special adhesive coating that is designed to adhere firmly to the envelope flap while still allowing for a clean and secure seal. The coating should be non - toxic and compliant with relevant environmental and safety regulations.</li></ul>

Dimensions

standard C4 envelope width, which is approximately 229mm)

Capacity

Suitable for enclosing A4 size documents or items of similar dimensions without overcrowding or damaging the contents. Can typically hold multiple sheets of paper, brochures, small packages, etc., depending on their thickness and bulk.

Tensile Strength

The envelope material should have a sufficient tensile strength to withstand normal handling during mailing, such as being sorted, stacked, and transported. For recycled paper envelopes, the tensile strength is engineered to be comparable to non - recycled counterparts, usually with a minimum tensile strength of [Z] N/m (Newtons per meter) in both the machine and cross - machine directions to prevent tearing.

Moisture Resistance

<ul><li>Surface treatment (if applicable): May have a water - resistant coating or finish to protect the contents from minor moisture exposure during transit. This coating helps to repel water droplets and reduces the risk of ink smudging or paper warping due to humidity.</li><li>Absorption rate: The paper used in the envelope should have a low moisture absorption rate. For example, it may absorb no more than [M]% of its weight in moisture over a specified period (e.g., 24 hours) under standard humidity conditions (e.g., 50% relative humidity at 23°C), ensuring that the envelope maintains its structural integrity and the contents remain dry. </li></ul>

Printing Compatibility

The envelope surface is compatible with various printing methods, such as offset printing, digital printing, and screen printing. It can accept different inks and toners, allowing for customization with logos, addresses, and other graphics. The recycled paper material is treated to ensure good ink adhesion and color reproduction, resulting in clear and vibrant printed images and text.

Environmental Certification

If made from 100% recycled materials, it may carry relevant environmental certifications, such as the Forest Stewardship Council (FSC) Recycled label. This indicates that the recycled content in the envelope meets the strict standards of the FSC for responsible forest management and recycling practices. Other possible certifications could include the Programme for the Endorsement of Forest Certification (PEFC) Recycled, which also validates the sustainable sourcing and recycling aspects of the product.