Detection method of non-woven fabric bag

Abstract

The invention relates to the technical field of non-woven fabric bag detection, in particular to a non-woven fabric bag detection method which comprises the following steps: step 1, appearance quality inspection and dimensional deviation detection; 2, physical performance detection, including tensile and tear strength testing; 3, analyzing harmful substances and detecting corrosion resistance; 4, performing food-grade safety detection and medical application detection; and step 5, flame retardance detection. Through appearance quality inspection and dimensional deviation detection, a tensile machine is adopted to measure breaking strength and tearing strength, the external force bearing capacity of the bag body is evaluated, heavy metal and chemical residues are detected, it is ensured that environmental protection standards are met, the acidity and alkalinity of cloth are tested, and stimulation generated when the cloth is in contact with food or skin is avoided; according to the method, the antibacterial property, hygroscopicity and coloring agent safety are tested, sterility, microbial barrier property and biocompatibility are verified, and flame retardance is detected, so that the method has the advantages of being comprehensive in detection and good in practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of non-woven bag detection, and in particular to a non-woven bag detection method. Background Art

[0002] Non-woven bags are made from chemical fibers such as polypropylene (PP) or polyester (PET) through non-woven technology (such as spunbond, needle punching, hot rolling, etc.). They are characterized by the fact that they do not require traditional textile processes and are formed directly through the directional or random arrangement of fibers to form a fiber mesh structure, which is then reinforced mechanically or chemically.

[0003] Currently, most of the existing testing methods for non-woven bags are not comprehensive, the testing is not thorough, and the practicality is poor. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present invention provides a non-woven bag detection method, which has the advantages of comprehensive detection and good practicality, and solves the above problems.

[0006] (2) Technical solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A method for detecting non-woven bags comprises the following steps:

[0009] Step 1: Appearance quality inspection and dimensional deviation detection;

[0010] Step 2: Physical properties testing including tensile and tear strength testing;

[0011] Step 3: Hazardous substance analysis and corrosion resistance testing;

[0012] Step 4: Food-grade safety testing and medical use testing;

[0013] Step 5: Flame retardancy test.

[0014] Preferably, the step 1 is to observe whether the surface is clean, free of oil stains, damage or burrs, whether the printed pattern is clear and complete, check the flatness of the bag and the front and back alignment, use measuring tools to measure the length, width, thickness and other parameters of the bag, compare with the design specifications, and ensure that the deviation is within the allowable range.

[0015] Preferably, in step 2, a tensile testing machine is used to measure the breaking strength and tearing strength to evaluate the bag's ability to withstand external forces.

[0016] Preferably, the step 2 also includes seam strength and lifting tests, wear resistance and load-bearing tests, wherein the seam strength and lifting tests: test the limit value of the tensile force that the seam can withstand to ensure that the seam is not untied or broken; simulate the durability under the load-bearing state through the lifting test; load-bearing test: observe whether the bag body is deformed or damaged according to the nominal load-bearing loading test; verify the impact resistance through the drop test (bottom / horizontal).

[0017] Preferably, the step three ensures compliance with environmental protection standards by detecting heavy metals and chemical residues, and tests the pH value of the fabric to avoid irritation when it comes into contact with food or skin.

[0018] Preferably, the step 4 tests the antibacterial properties, hygroscopicity and safety of the dye to ensure no contamination risk, and verifies the sterility, microbial barrier properties and biocompatibility.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the present invention provides a method for detecting non-woven bags, which has the following beneficial effects:

[0021] 1. The present invention ensures that the deviation is within the allowable range through appearance quality inspection and dimensional deviation detection, uses a tensile tester to measure the breaking strength and tear strength to evaluate the bag's ability to withstand external forces, detects heavy metals and chemical residues to ensure compliance with environmental protection standards, tests the pH value of the fabric to avoid irritation when in contact with food or skin, tests the antibacterial performance, hygroscopicity and dye safety to ensure there is no pollution risk, verifies sterility, microbial barrier performance and biocompatibility, and also performs flame retardancy testing. Therefore, this method has the advantages of comprehensive detection and good practicality.

[0022] 2. The present invention also includes seam strength and lifting tests, wear resistance and load-bearing tests, among which the seam strength and lifting tests: test the limit value of the tensile force that the seam can withstand to ensure that the seam is not untied or broken; simulate the durability under the load-bearing state through the lifting test; load-bearing test: observe whether the bag body is deformed or damaged according to the nominal load-bearing loading test; and verify the impact resistance through the drop test. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The present invention relates to a method for detecting a non-woven bag, comprising the following steps:

[0025] Step 1: Appearance quality inspection and dimensional deviation detection, observe whether the surface is clean, free of oil, damage or burrs, whether the printed pattern is clear and complete, check the flatness of the bag and the front and back alignment, use measuring tools to measure the length, width, thickness and other parameters of the bag, compare with the design specifications, and ensure that the deviation is within the allowable range;

[0026] Step 2: Physical performance testing includes tensile and tear strength testing, using a tensile testing machine to measure breaking strength and tear strength to evaluate the bag's ability to withstand external forces;

[0027] Step 2 also includes seam strength and lifting tests, wear resistance and load-bearing tests. The seam strength and lifting tests: test the limit of tensile force at the seam to ensure that the seams are not untied or broken; the lifting test simulates the durability under load; the load-bearing test: observe whether the bag is deformed or damaged according to the nominal load-bearing load test; and the drop test (bottom / horizontal) verifies impact resistance.

[0028] Step 3: Hazardous substance analysis and corrosion resistance testing: By testing for heavy metals and chemical residues to ensure compliance with environmental standards, the fabric's pH level is tested to prevent irritation when in contact with food or skin.

[0029] Step 4: Food-grade safety testing and medical use testing, testing antimicrobial properties, hygroscopicity and dye safety to ensure there is no contamination risk, and verifying sterility, microbial barrier properties and biocompatibility;

[0030] Step 5: Flame retardancy test.

[0031] The beneficial effects of the present invention are as follows: the present invention ensures that the deviation is within the allowable range through appearance quality inspection and dimensional deviation detection, uses a tensile tester to measure the breaking strength and tear strength, evaluates the bag's ability to withstand external forces, and ensures compliance with environmental protection standards by detecting heavy metals and chemical residues. The pH of the fabric is tested to avoid irritation when in contact with food or skin, and the antibacterial performance, hygroscopicity and dye safety are tested to ensure no pollution risk. Sterility, microbial barrier performance and biocompatibility are verified, and flame retardancy testing is also performed. It also includes seam strength and lifting tests, wear resistance and load-bearing tests, among which the seam strength and lifting tests: test the limit value of the tensile force at the seam to ensure that the seam is not debonded or broken; simulate the durability under load-bearing conditions through lifting tests; load-bearing test: observe whether the bag is deformed or damaged according to the nominal load-bearing loading test; and verify impact resistance through a drop test. Therefore, this method has the advantages of comprehensive testing and good practicality.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting non-woven bags, characterized in that: The following steps are involved: Step 1: Appearance quality inspection and dimensional deviation detection; Step 2: Physical properties testing including tensile and tear strength testing; Step 3: Hazardous substance analysis and corrosion resistance testing; Step 4: Food-grade safety testing and medical use testing; Step 5: Flame retardancy test.

2. The method for detecting a non-woven bag according to claim 1, wherein: The first step is to observe whether the surface is clean, free of oil stains, damage or burrs, whether the printed pattern is clear and complete, and use measuring tools to measure the length, width, thickness and other parameters of the bag, compare them with the design specifications, and ensure that the deviation is within the allowable range.

3. The method for detecting a non-woven bag according to claim 1, wherein: In the second step, a tensile testing machine is used to measure the breaking strength and tearing strength to evaluate the bag's ability to withstand external forces.

4. The method for detecting a non-woven bag according to claim 1, wherein: The step 2 also includes seam strength and lifting tests, wear resistance and load-bearing tests, among which the seam strength and lifting tests: test the limit value of the tensile force that the seam can withstand to ensure that the seam is not untied or broken; simulate the durability under the load-bearing state through the lifting test; load-bearing test: observe whether the bag body is deformed or damaged according to the nominal load-bearing loading test; and verify the impact resistance through the drop test.

5. The method for detecting a non-woven bag according to claim 1, wherein: Step three ensures compliance with environmental standards by testing heavy metals and chemical residues, and tests the pH of the fabric to avoid irritation when it comes into contact with food or skin.

6. The method for detecting a non-woven bag according to claim 1, wherein: The fourth step tests the antimicrobial properties, hygroscopicity and safety of the dye to ensure there is no risk of contamination and to verify the sterility, microbial barrier properties and biocompatibility.