T/SZPA 003-2024 Express envelope loop sealing tape

Scope

Scope: This document specifies the material requirements, technical requirements, and marking, packaging, transportation, and storage requirements for express envelope recyclable sealing stickers, and provides inspection methods. This document is applicable to the production and inspection of express envelope recyclable sealing stickers. Main technical content: 1. Material requirements for cardboard: Grey-backed coated white cardboard shall be used, and the cardboard shall meet the technical requirements in Table 1. 2. Material requirements for adhesives: Non-solvent adhesives shall be used. Benzene in the adhesive shall not exceed 100 mg/kg, toluene and dodecane shall not exceed 1000 mg/kg, and halogenated hydrocarbons shall not exceed 1000 mg/kg. 3. Material requirements for release paper: Release paper suitable for the characteristics of the adhesive used shall be selected. When in use, the release paper should be able to be easily torn off. 4. Technical requirements for appearance, specifications, dimensions, adhesive tapes, and easy-tear tapes are specified. 5. Technical requirements for printing quality: 5.5.1 The printed images and text should be clear and complete. 5.5.2 The requirements for solid-color printing shall comply with the general product specifications given in Table 5 of GB/T 7705—2008. 5.5.3 The requirements for dot-matrix printing shall comply with the general product specifications given in Table 6 of GB/T 7705—2008. 5.5.4 The overprint error of images and text shall comply with the general product specifications given in Table 4 of GB/T 7705—2008.

Development Information

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