Langfang design printed envelopes

Envelope generally refers to people for regular mail, the contents of an exchange of letters the conservative document pouch-like information, is made of rectangular paper. Operational envelope machine requires paper must have high tensile strength and tear, in order to avoid breaks, cracking. Because the envelopes are widely used in the production of this form of life, not just used to hold letters, like red envelopes, CD bags, buttons, bags, glasses, bags and other bags. Envelope specifications :() length × width front: Line 2 (B6) envelope: 176 × 125mm 5 号 (DL) Envelope: 220 × 110mm 6 号 (ZL) envelope: 230 × 120mm 7 号 (C5) Envelope: 229 × 162mm 9 号 (C4) envelope: 324 × 229mm envelope paper: the general use of 80g-150g of offset paper, kraft paper (natural kraft paper, white kraft paper), according to different functions, but also useful art paper, coated paper and so on.