QB 2358-1998 Heat Bonding Strength Test Method for Plastic Film Packaging Bags

The so-called hot joint strength is the tensile strength
of the hot joint seam when the hot joint is used.

So how to test the heat bonding strength of packaging materials? Shandong Puchuang Industrial Technology Co.
, Ltd.
through the test standards to narrate for you! QB 2358-1998 Plastic Film Packaging Bag Heat Bonding Strength Test Method: Select Equipment: ETT-AM Electronic Tensile Testing Machine Sampling Position: Respectively, on the side, back, top and bottom of the plastic film packaging bag, and the heat binding site is vertically taken as a sample of the hot bonding specimen, which is used as the hot combination specimen
on the side, back, top and bottom of the package.

Shape and size: specimen width (15 + 0.
1) mm, unfolding length (100 + 1) mm, if the unfolding length is less than (100 + 1) mm, as shown in Figure 2.
, with adhesive tape bonded with the same material as the bag, so that the sample unfolding length meets the (100 soil 1) mm requirements
.

Number of samples: 10 samples from each hot bonding site, at least 3 plastic film bags
.

Specimen measurement: the specimen width is measured using a vernier caliper; The specimen length is measured
using a ruler.

Test steps: The specimen after state adjustment, with the heat bonding site as the center, opens at 180 °, and the two ends of the specimen are sandwiched on the two fixtures of the testing machine, and the axis of the specimen should coincide with the centerline of the upper and lower fixtures, and the tightness is required to be suitable to prevent the specimen from slipping off or breaking in the fixture before the test
.

The distance between fixtures is 50 mm, the test speed is (300+20) mm/min, and the maximum load
in case of specimen fracture is read.

If the specimen is broken in the fixture, the specimen is invalid and another specimen is taken for refill
.

Result calculation: The experimental results are calculated by the arithmetic mean of 10 specimens as the heat bonding strength of the site, expressed in N/15mm, and three significant digits are
taken.

Test report The name, material, and specifications
of plastic film packaging bags.

Test conditions: the position of the sample in the plastic film packaging bag and the arithmetic average, maximum, minimum value of the heat bonding strength of each position
.

When the heat bonding strength is greater than the breaking tensile force of the plastic film, it should be explained
.