How to detect cosmetic packaging materials（1）

Cosmetic packaging testing items mainly include: barrier performance testing (gas transmission rate test and water vapor transmission rate test), friction coefficient (material surface smoothness), tensile strength and elongation, peel strength, heat seal strength (heat seal strength) ), sealing and leakage testing, impact resistance testing, thickness testing, solvent residue testing, printing quality testing, etc.

(1) Barrier performance testing of cosmetic packaging testing equipment

Barrier property refers to the barrier effect of packaging materials on gas (such as oxygen), liquid (vapor) and other permeates. Barrier performance is an important factor affecting the quality of products during the shelf life. The instrument information list is as follows:

1. Perme-dm2/330 dual-detection gas transmission rate tester: differential pressure and equal pressure dual-method test, used for plastic film, composite film and other films, sheet materials and finished container gas transmission rate test. Three-cavity independent, automatic, temperature control, arbitrary temperature data fitting, support for local area network data centralized management, patented product.

2. Perme-ox2/230 oxygen transmission rate test system: Coulomb principle, isobaric method to test the oxygen permeability of films, sheet materials, bottles, bags, cans, boxes and other packaging containers. Host and satellite models, one host can be connected to nine satellites, and 30 samples can be tested at the same time.

3. The vac-v series differential pressure method gas permeation instrument is used for the measurement of o2, n2, co2 and other gas permeance of plastic film, sheet, composite film and other materials. Principle of differential pressure method. This series has vac-v1, vac-v2, vac-v3 and other models.

4. Perme-w3/330 water vapor transmission rate test system: used to determine the water vapor transmission rate of films, sheet materials and packaging containers such as bottles, bags, cans, boxes, etc. Host and satellite models, one host can be connected to nine satellites, and 30 samples can be tested at the same time.

5. Tsy-t series moisture permeability tester: testing the water vapor transmission rate of various packaging materials and polymer products such as films and composite films; temperature control, fully automatic; computer monitoring, gravimetric principle. This series has tsy-t1h, tsy-t1l, tsy-t3 and other models.

(2) Testing of cosmetic packaging strength

Strength testing includes packaging material tensile strength, composite film peel strength, heat seal strength, tear strength, puncture resistance and other indicators. Tensile strength refers to the maximum stress that the material can withstand before it breaks. Testing can effectively solve the packaging damage and fracture caused by external force due to insufficient mechanical strength of the selected packaging material. Peel strength, also called composite strength, is to detect the bonding strength between layers in the composite film. If the bonding strength is too low, problems such as leakage caused by separation of the layers during packaging use are very likely to occur. Heat seal strength is to detect the strength of the seal. During the storage and transportation of the product, if the heat seal strength is too low, it will cause problems such as cracking of the heat seal and leakage of the contents. Puncture resistance is an index for evaluating the puncture resistance of packaging against hard objects.

The corresponding testing instrument information is as follows:

1. xlw series intelligent electronic tensile testing machine: peeling, tensile test, heat sealing strength test, tearing performance professional test for films, composite films, adhesives, adhesive tapes, etc. The series has a total of xlw, xlw(b), xlw(m), xlw(pc), xlw(g) and other models.

2. bld-200s electronic peeling tester: film, composite film, adhesive, adhesive tape, etc. peeling, tensile test, heat-sealing strength test; standard specification 200n (100n, 50n, 30n), micro-printing, computer communication interface.

3. hst-h3 heat sealing tester: sample preparation for film heat sealing strength test, pressure, temperature and time are adjustable. It adopts single-chip microcomputer control and intelligent operation; temperature adopts pid high-precision components to ensure accurate and reliable temperature.

4. rtd-r2 heat sealing gradient meter: It can prepare samples of plastic film, flexible packaging composite film and other materials at 5 groups of independent temperatures at one time, and heat seal 5 groups of samples at a time, with high efficiency.

(3) cosmetic packaging sealing performance test

The sealing performance test can ensure that the sealing of the entire product package is intact, and prevent the leakage of the product from causing deterioration of the packaged product due to the poor sealing performance.

1. mfy-01 sealing tester: vacuum chamber is used to test the reliability of packaging and sealing. Microcomputer control, panel operation, digital setting test parameters, fully automatic test.

2. lssd-0 leakage and sealing strength tester: testing the heat-sealing strength and sealing integrity of packaging bags, plastic bottles, packaging containers, intelligent testing process, liquid crystal display, statistical communication; positive pressure principle.

(4) Analysis of headspace gas in cosmetic packaging

The hga-01 headspace gas analyzer is used for the determination of oxygen and carbon dioxide gas content and mixing ratio in sealed packaging bags, bottles, cans and other packaging; suitable for rapid and accurate measurement of packaging parts in production lines, warehouses, laboratories and other occasions The content and proportion of the gas components are evaluated to guide production and ensure that the shelf life of the product can be achieved.