Bag for placing material evidence or sample and manufacturing method thereof

Abstract

The present invention relates to a bag holding material evidences or material samples and a production method. The present invention aims at resolving the prior art problem that the original state of material evidences is influenced to open the bag mouth and tear the protective membrane of a double-face adhesive tape by hands with troublesome operation and no proper production method is available to provide better congener bags. The key points of the technic proposal is that: the bag is characterized in that the bag body is made of plastic foil with sealing sides; the back side of the sealing line of one bag body side is provided with an easy-tearing line used for tearing the bag mouth; the back side surface of the easy-tearing line is provided with a reinforcing applying band which is provided with a metal line used for shaping assisting the bag mouth; and two pairs or more overhang hand holding parts are arranged on the reinforcing applying band. The production method is characterized in that: two layers of folding plastic foils are used; every side is sealed; the easy-tearing line is stamped; two segments of reinforcing applying bands are cut; a pair of overhang hand holding parts are joggled before cutting; the metal line is cut and the center of reinforcing applying band is put in; the reinforcing applying band is affixed; and after affixing another pair of overhang hand holding parts are formed beyond the two side parts of the bag body.

Description

technical field [0001] The invention provides an important item collection bag and a manufacturing method thereof, in particular to a bag containing physical evidence or material samples for on-site evidence collection or sampling and a manufacturing method thereof. Background technique [0002] At present, in various criminal and civil cases, especially in the criminal investigation work of the public security and procuratorial organs, it is often necessary to collect a lot of physical evidence at the scene of the case, send it to the appraisal or use it as a testimony. Due to the poor conditions and poor environment at the scene of the case, the physical evidence is easily worn or defaced, and easily tampered with and destroyed, which makes it difficult for the case to be solved or a fair trial. Therefore, it is very important to properly store and transfer the physical evidence collected at the scene of the case. At present, in the laboratory or laboratory work of inspect...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the existence of existing packaging bags containing physical evidence or objects, it is necessary to directly open the mouth of the bag and tear off the protective film of the double-sided tape by hand, so that it is easy to transfer the dirt and fingerprints on the hands of the operator It affects the original state of physical evidence, and it is troublesome to disassemble the mouth of the bag. At present, there is no suitable existing production method that can provide better bags of the same kind. The purpose of the present invention is to provide an improved bag for holding physical evidence. and its preparation method can overcome the defects of the prior art

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