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Patent Searching and Data


Title:
ENVELOPE
Document Type and Number:
WIPO Patent Application WO/2017/024797
Kind Code:
A1
Abstract:
An envelope comprises a front board (11), a back board (12) and a sealing board (110). A tearing strip (111), an adhesive region and an anti-theft line (113) are formed on the sealing board (110). The front board (11) and back board (12) are both cardboards having a multi-layer structure, and a surface of the corrugated cardboards is coated with a plastic thin film. In the present invention, a multi-layer corrugated cardboard is used to improve the hardness and stiffness of the envelope itself, and the plastic thin film ensures that the envelope has resistance to moisture and water. In addition, a double-sided tape having a superior initial adhesion, strong holding power and high peel strength is used for sealing, and the tearing strip is employed for opening, such that the envelope has secure sealing and is easy to open, and reuse of the envelope is facilitated. Moreover, delivery security of an object contained in the envelope is guaranteed by adding an anti-theft cut portion having a closed region torn upon opening of the envelope.

Inventors:
CHANG JIANG (CN)
Application Number:
PCT/CN2016/076487
Publication Date:
February 16, 2017
Filing Date:
March 16, 2016
Export Citation:
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Assignee:
CHANG JIANG (CN)
International Classes:
B65D27/14; B65D27/38; B65D65/38
Foreign References:
CN203780978U2014-08-20
CN105015903A2015-11-04
CN204979601U2016-01-20
CN2902922Y2007-05-23
JP3365995B22003-01-14
DE19908868A12000-09-14
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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