CN111824577B - High resistant separates volatile material evidence of self sealss and seals appearance bag - Google Patents
High resistant separates volatile material evidence of self sealss and seals appearance bag Download PDFInfo
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- CN111824577B CN111824577B CN202010698761.4A CN202010698761A CN111824577B CN 111824577 B CN111824577 B CN 111824577B CN 202010698761 A CN202010698761 A CN 202010698761A CN 111824577 B CN111824577 B CN 111824577B
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- bag body
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- material evidence
- outer bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
Abstract
The utility model provides a high resistant separates self sealss volatility material evidence seal appearance bag, includes the outer bag body, outer bag body inboard is provided with the inlayer bag body, and inlayer bag body bottom and outer bag body bottom bind, inlayer bag body opening is higher than outer bag body opening, prevents that granule solid or liquid from remaining and sealing the clamp and reduce the storage bag leakproofness for seal appearance bag application range is more extensive, is provided with plastic film between the inlayer bag body and the outer bag body, and plastic film is located the opening part of the inlayer bag body and the outer bag body, and the plastic film both ends are in the same place with outer bag body coincidence part is glutinous, and outer bag body sack department internal surface binds and has sealed the clamp, outer bag body outside is provided with gaseous sample connection. When the investigator obtains evidence in a specific place, both volatile solid and liquid can be stored in a sealed manner, and gas can be stored for more than 3 months; the material evidence sample sealing bag is wholly transparent, and can perform appearance inspection on material evidence in the package to guarantee the integrity of an evidence chain.
Description
Technical Field
The invention belongs to the technical field of sample sealing bags for public safety, and particularly relates to a high-barrier self-sealing volatile material evidence sample sealing bag which can be used for sealing volatile material evidences such as criminal investigation, fire, explosion, leakage, environmental protection and the like so as to ensure the effective storage of key compounds and the integrity of an evidence chain.
Background
"in situ evidence" refers primarily to evidence expressed by the morphology of a substance in the field. The fixed protection of the on-site material evidence ensures the objective and real source and procedure legality of the on-site material evidence, and the legality of the on-site material evidence is continued in the subsequent examination and court trial application processes, so that the on-site material evidence plays a decisive role in finding out the truth of cases, protecting litigation and justice officials. Volatile material evidence is greatly involved in cases of criminal investigation, fire, explosion, leakage, environmental protection and the like, and the volatile material evidence is easy to lose and difficult to store, and the loss probability of the volatile material evidence is increased at the time interval of extracting the volatile material evidence from a field to laboratory identification, which brings difficulty to the accurate qualification of the cases. Therefore, in the packaging process, how to prevent the material evidence from volatilizing or ensure that the volatilized key compounds are not lost can be extracted and detected, and the key points of the material evidence packaging are located.
Taking the volatile material evidence of fire as an example, although the equipment for investigation in the fire scene is used for cleaning, extracting and analyzing and identifying the fire accident scene according to the 5.2.1.4 specification of the fire supervision technical equipment allocation (GB25203-2010), the equipment list has no clear specification description on the material structure of the material evidence sample sealing bag, so that the product quality of the material evidence sample sealing bag is uneven for a long time. The current popular sample sealing bag is made of conventional materials such as polypropylene and polyethylene, the packaging bag is good in transparency and good in water barrier property, but poor in gas barrier property, when a sample is filled with gas, the effective components of the material evidence are difficult to volatilize and dissipate in storage and transmission, and are easy to wear or stain and even to be tampered and damaged, so that the case is hindered from being examined by justice. The material evidence sample sealing bags in the prior criminal investigation, security surveillance and environmental protection fields face the same situation.
Metal/glass is a good organic gas compound barrier material, but in the practical application process of first-line case investigation, the extraction amount of the inspection material evidence is often large or the shape is not regular, the opening size and the storage space of the metal/glass tank body are limited, and the extraction material evidence is difficult to be contained in an integrity manner; meanwhile, the metal/glass tank body occupies a large space and is inconvenient to carry and use; under the high-humidity condition, the influence on the identification of chemical material evidence after the metal material is corroded is not clear, and pollution can be caused; the glass packaging tank is fragile in the transportation process, so that physical evidence can be scattered; finally, metal/glass cans with good sealability are costly. Therefore, the metal/glass tank body is used as a sample packaging device for inspection, and the material evidence sealing sample bag is mainly used in the actual work.
On the other hand, the existing material evidence sample sealing bag is sealed by adopting double faced adhesive tapes, so that the solid particles in the material evidence can be only guaranteed to be tightly packaged, volatile components in the material evidence are completely free of barrier property, and small particle solids and liquid in actual use inevitably remain in a sealing position during packaging, so that the sealing property is reduced, the bag opening can be opened without trace, and great hidden danger is brought to the integrity of an evidence chain.
Finally, because the existing packaging bag and glass/iron can do not consider the special requirements of volatile material evidence identification experiment operation, and a sampling port is not prefabricated, the laboratory identification has to be unpacked for inspection, and the atmosphere volatilized into the bag/iron can is diffused, so that the further loss of the effective components is caused.
Therefore, the invention provides a generation of high-barrier self-sealing volatile material evidence sample sealing bag.
Disclosure of Invention
Aiming at the defects of the existing product, the invention provides the material evidence sample sealing bag which has high barrier property and field sealing function, does not influence the sealing property when filled with small-particle solid and liquid, can retain a disassembly trace after a sealing opening is disassembled, has a self-sealing gas sampling opening and can retain internal gas for 3 months. Meanwhile, the material evidence packaging bag has transparency, and can be used for carrying out appearance inspection on packaged material evidence so as to ensure the integrity of an evidence chain.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high resistant separates self sealss volatility material evidence seal appearance bag, includes the inlayer bag body, the outer bag body, plastic film, seals and presss from both sides and gaseous sample connection, outer bag body inboard is provided with the inlayer bag body, and inlayer bag body bottom binds with outer bag body bottom, inlayer bag body opening is higher than outer bag body opening, prevents that granule solid or liquid from remaining and sealing and pressing from both sides and reduce the storage bag leakproofness for seal appearance bag application range more extensive, be provided with plastic film between the inlayer bag body and the outer bag body, and plastic film is located the opening part of the inlayer bag body and the outer bag body, and the plastic film both ends are in the same place with outer bag body coincidence part bondings, and outer bag mouth department internal surface binds and has sealed the clamp, outer bag body outside is provided with gaseous sample connection.
The plastic film upper end is less than inlayer bag body opening setting, and the plastic film bottom is less than the sealing and presss from both sides the setting.
The gas sampling port is a round soft silica gel gas sampling port.
The sealing clamp is of a hinge structure with interference magnitude, and can realize instant self-sealing.
The plastic film is a polyethylene film with pressure-sensitive adhesive coated on both sides, the polyethylene film with the pressure-sensitive adhesive coated on both sides is clamped when the sealing clamp is sealed, a trace is left when the bag mouth is repeatedly opened and sealed, and the air tightness of the seal can be increased due to the flowability of the pressure-sensitive adhesive.
The inner bag body is a high-strength polymer plastic bag, is puncture-resistant and can store sharp objects.
The outer plastic bag is a multi-layer composite plastic bag, is high temperature resistant, has high barrier property, and can store internal gas for more than 3 months.
The invention has the beneficial effects that: when the investigators obtain evidence in a specific place, volatile solid, small-particle solid or liquid can be stored in a sealed manner, and gas can be stored for more than 3 months; by coating pressure-sensitive adhesive on the two sides of the plastic film, a trace can be left when the closed seal is opened under any condition, so that other people are prevented from destroying evidence and being unaware; and the residue of small-particle solid or liquid during packaging does not influence the sealing tightness; through set up gaseous sample connection in the outer bag body, can not open and seal a kind bag and directly carry out the sample appraisal. The material evidence sample sealing bag is wholly transparent, and can perform appearance inspection on material evidence in the package to guarantee the integrity of an evidence chain.
Drawings
FIG. 1 is a schematic view of a high-barrier self-sealing sample sealing bag for volatile material evidence according to the present invention;
FIG. 2 is an exploded view of a high barrier self-sealing volatile material evidence sample-sealing bag according to the present invention;
1. an inner bag body; 2. a plastic film; 3. a sealing clip; 4. an outer bag body; 5. a gas sampling port.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples.
As shown in figures 1 and 2, a high-barrier self-sealing volatile material evidence sample sealing bag comprises an inner bag body 1, an outer bag body 4, a plastic film 2, a sealing clamp 3 and a gas sampling port 5, wherein the inner bag body 1 is arranged on the inner side of the outer bag body 4, the bottom end of the inner bag body 1 is bonded with the bottom end of the outer bag body 4, the opening of the inner bag body 1 is higher than the opening of the outer bag body 4, small solid particles or liquid is prevented from remaining in the sealing clamp 3 to reduce the sealing property of the storage bag, so that the sample sealing bag has a wider application range, the plastic film 2 is arranged between the inner bag body 1 and the outer bag body 4, the plastic film 2 is arranged at the openings of the inner bag body 1 and the outer bag body 4, the two ends of the plastic film 2 are bonded with the outer bag body 4 in a superposition part, the sealing clamp 3 is bonded on the inner surface of the opening of the outer bag body 4, the gas sampling port 5 communicated with the outer bag body 4 is arranged on the outer side of the outer bag body 4, the gas sampling port 5 is a round soft silica gel gas sampling port.
The upper end of the plastic film 2 is lower than the opening of the inner bag body 1, and the bottom end of the plastic film 2 is lower than the sealing clip 3.
The sealing clamp 3 is of a hinge structure with interference magnitude, and can realize instant self-sealing.
The double-sided coating of plastic film 2 has pressure-sensitive adhesive, and plastic film 2 that double-sided coating pressure-sensitive adhesive is cliied when sealing clamp 3 seals, leaves the trace when the sack is opened repeatedly and seals, and the mobility of pressure-sensitive adhesive also can make the gas tightness of sealing increase.
The inner bag body 1 is a high-strength polymer plastic bag, is puncture-resistant and can store sharp objects.
The outer plastic bag is a multi-layer composite plastic bag, is high temperature resistant, has high barrier property, and can store internal gas for more than 3 months.
A method for using a high-barrier self-sealing volatile material evidence sample sealing bag is characterized in that when an investigator obtains evidence in a specific place, a material evidence is placed into a space formed by an inner bag body 1 of the material evidence sample sealing bag through a sealing clamp 3, and then a bag opening is sealed through the sealing clamp 3; when needs extract the material evidence and examine time measuring, pass gaseous sample connection 5 through the needle and prick the hourglass with inlayer bag body 1 to pass the hole on gaseous sample connection 5 and the inlayer bag body 1 through sampling tool and take out some with the material evidence and detect, then seal through the circular soft silica gel of gaseous sample connection 5.
Example 1
The inner layer bag body 1 is made of high-density polyethylene, the outer layer bag body 4 is made of an EVOH-PE-PA6 co-extrusion material, the plastic film 2 is a polyethylene film with double surfaces coated with pressure-sensitive adhesive, the sealing clamp 3 is of a hinge structure with interference, and the gas sampling port 5 is a soft silica gel gas sampling port.
The performance test is as follows: water vapor barrier property 8.9cm3/m324 h; oxygen barrier property 11.3cm3/m324 h; alcohol barrier property 50cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 118 percent; the normal-temperature tensile strength of the material evidence sample sealing bag is 60.2 MPa; haze 17.2%; dart impact 120.5 g; the quality loss of the stored product (saturated gasoline cotton) is 10 percent within 3 months of the storage period.
Example 2
Example 2 differs from example 1 in that the outer pouch 4 material is a PVDF-PE-EVOH-PE-PA11 co-extruded material.
The performance test is as follows: water vapor barrier property 4.3cm3/m324 h; oxygen barrier property 4.1cm3/m324 h; alcohol barrier property of 10.8cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 117.6 percent; the tensile strength of the material evidence sample sealing bag at normal temperature is 62.3 MPa; haze 20.9%; dart impact 135.1 g; the quality loss of the storage material (saturated gasoline cotton) is 5.7 percent within 3 months of the storage period.
Example 3
Example 3 differs from example 1 in that: the outer bag body is made of PE-EVA-PVDC-EVA-EVOH-PE-PA6 co-extrusion material.
The performance test is as follows: water vapor barrier property 3.7cm3/m324 h; oxygen barrier property 4.1cm3/m324 h; alcohol barrier property 6.7cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 112.8 percent; the tensile strength of the material evidence sample sealing bag at normal temperature is 57.3 MPa; haze 27.6%; dart impact 132.1 g; the quality loss of the storage material (saturated gasoline cotton) is 4.2 percent within 3 months of the storage period.
Example 4
Example 4 differs from example 1 in that: the outer bag body 4 is made of PVDC-EVA-SBS-EVOH-PP-PE-PA12 co-extrusion material.
The performance test is as follows: water vapor barrier property 4.3cm3/m324 h; oxygen barrier property 3.9cm3/m324 h; alcohol barrier property 5.5cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 129.1 percent; the tensile strength of the material evidence sample sealing bag at normal temperature is 62.5 MPa; haze 30.1%; dart impact 132.1 g; the quality loss of the storage material (saturated gasoline cotton) is 4.2 percent within 3 months of the storage period.
Example 5
Example 5 differs from example 1 in that: the outer bag body 4 is made of PVDF-PE-PA11-PE-EVOH-PVDF-PE-HIPS-PE-PA6 co-extrusion material.
The performance test is as follows: water vapor barrier property 2.5cm3/m324 h; oxygen barrier property 1.5cm3/m324 h; alcohol barrier property 3.1cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 117.5 percent; the tensile strength of the material evidence sample sealing bag at normal temperature is 62.2 MPa; haze 30.5%; dart impact 280.9 g; the quality loss of the storage material (saturated gasoline cotton) is 2.3 percent within 3 months of the storage period.
Example 6
Example 6 differs from example 1 in that the inner bag body 1 is made of a syndiotactic polypropylene film and the outer bag body 4 is made of a PVDF-PE-EVOH coextruded material.
The performance test is as follows: water vapor barrier property 5.2cm3/m324 h; oxygen barrier property 4.7cm3/m324 h; alcohol barrier property 19.7cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 131.8 percent; the tensile strength of the material evidence sample sealing bag at normal temperature is 51.7 MPa; haze 19.7%; dart impact 123.7 g; the quality loss of the storage material (saturated gasoline cotton) is 6.1 percent within 3 months of the storage period.
Example 7
Example 7 differs from example 1 in that: the inner bag body is made of PA6, and the outer bag body is made of EVOH-PE-PA12-PE-PVDC co-extrusion material.
The performance test is as follows: water vapor barrier property 5.3cm3/m324 h; oxygen barrier property 4.6cm3/m324 h; alcohol barrier property 8.7cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 136.2 percent; the material evidence sample-sealing bag is oftenThe tensile strength at warm stretching is 66.7 MPa; haze 22.7%; dart impact 129.6 g; the quality loss of the storage material (saturated gasoline cotton) is 5.1 percent within 3 months of the storage period.
Example 8
Example 8 differs from example 1 in that: the inner bag body is made of nylon 12, and the outer bag body is made of PP-PE-PA66-PE-EVOH-PVDC-PE-SIS-PE-PVDC co-extrusion material.
The performance test is as follows: water vapor barrier property 2.1cm3/m324 h; oxygen barrier property 1.8cm3/m324 h; alcohol barrier property 3.9cm3/m324 h; the elongation at break of the material evidence sample sealing bag at normal temperature is 122.3 percent; the tensile strength of the material evidence sample sealing bag at normal temperature is 56.8 MPa; haze 25.5%; dart impact 320.9 g; the quality loss of the storage material (saturated gasoline cotton) is 3.1 percent within 3 months of the storage period.
Claims (6)
1. A high-barrier self-sealing volatile material evidence sample sealing bag is characterized by comprising an inner bag body, an outer bag body, a plastic film, a sealing clamp and a gas sampling port, wherein the inner bag body is arranged on the inner side of the outer bag body, the bottom end of the inner bag body is bonded with the bottom end of the outer bag body, the opening of the inner bag body is higher than the opening of the outer bag body, the plastic film is arranged between the inner bag body and the outer bag body and is positioned at the openings of the inner bag body and the outer bag body, the two ends of the plastic film are bonded with the overlapped parts of the outer bag body, the sealing clamp is bonded on the inner surface of the opening of the outer bag body, and the gas sampling port is arranged on the outer side of the outer bag body;
the plastic film is a polyethylene film with pressure-sensitive adhesive coated on both sides, the polyethylene film with the pressure-sensitive adhesive coated on both sides is clamped when the sealing clamp is sealed, a trace is left when the bag mouth is repeatedly opened and sealed, and the air tightness of the seal can be increased due to the flowability of the pressure-sensitive adhesive.
2. A high barrier self-sealing volatile material evidence specimen envelope of claim 1 wherein: the plastic film upper end is less than inlayer bag body opening setting, and the plastic film bottom is less than the sealing and presss from both sides the setting.
3. A high barrier self-sealing volatile material evidence specimen envelope of claim 1 wherein: the gas sampling port is a round soft silica gel gas sampling port.
4. A high barrier self-sealing volatile material evidence specimen envelope of claim 1 wherein: the sealing clip is of a hinge structure with interference magnitude.
5. The high barrier self-sealing volatile material evidence sample sealing bag according to claim 1, characterized in that: the inner bag body is a high-strength polymer plastic bag.
6. A high barrier self-sealing volatile material evidence specimen envelope of claim 1 wherein: the outer plastic bag is a multi-layer composite plastic bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010698761.4A CN111824577B (en) | 2020-07-20 | 2020-07-20 | High resistant separates volatile material evidence of self sealss and seals appearance bag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010698761.4A CN111824577B (en) | 2020-07-20 | 2020-07-20 | High resistant separates volatile material evidence of self sealss and seals appearance bag |
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| CN111824577A CN111824577A (en) | 2020-10-27 |
| CN111824577B true CN111824577B (en) | 2022-05-03 |
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| CN111824577A (en) | 2020-10-27 |
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