Abstract:Spicy sausage is a common snack food, most of which contains liquid components similar to oil. It is often packaged in a stretched form, and oil leakage often occurs at the heat seal after packaging is completed. This not only affects the image of the product, but also has a negative impact on the quality of the spicy sausage. This article utilizes the intelligent electronic tensile testing machine independently developed and designed by Jinan Languang Electromechanical Technology Co., LtdXLW(PC)Testing the heat sealing strength of the stretch packaging of spicy sausage, analyzing the testing principle, equipment parameters, and brief testing process of the equipment, has certain reference significance for spicy sausage production enterprises to solve the problem of oil leakage in heat sealing.

KeywordsSpicy sausage, meat products, stretch packaging, plastic composite film, intelligent electronic tensile testing machine, sealing, oil leakage, aluminum-plastic composite film, aluminum plated composite film, sealing edge, heat sealing strength, heat sealing strength, sealing strength

1Meaning

Spicy sausage has a unique (separated) taste, high content of protein, fat and other components, and contains some oily liquid components. Its color and aroma are tempting, and it is a common food for people to send meals during leisure travel. In the bright development prospects of spicy sausage, incidents such as oil leakage from heat sealed edges that affect quality and safety occur from time to time. Mild cases involve the oil components inside the packaging penetrating into the heat sealed edges, while severe cases involve the oil components directly seeping out of the packaging. This not only reduces the brand image of the product, but may even lead to quality problems such as mold and swelling of the spicy sausage, seriously affecting the competitiveness of the enterprise's products.

image1 Slight oil leakage phenomenon in hot sealing

2Current situation

(1)The commonly used packaging form for spicy sausages is stretch packaging. The packaging bag consists of a cover film and a bottom film. After inserting the spicy sausages, the cover film and bottom film are formed through heat sealing technology. This packaging form has the advantages of beauty, easy use, and consumers can directly see the color and shape of the spicy sausage.

(2)At present, the testing standards for the heat sealing strength of plastic film packaging bags mainly refer to the standard situationQB/T 2358-1998Test method for heat sealing strength of plastic film packaging bags.

3Sample

A spicy sausage packaging bag with oil leakage problem for a certain brand.

4Experimental equipment

The experimental equipment used to test the heat sealing strength of packaging bags in this article isLabthinkLan GuangXLW(PC)Intelligent electronic tensile testing machine.

image2 XLW(PC)Intelligent electronic tensile testing machine

4.1Test principle

XLW(PC)The intelligent electronic tensile testing machine includes two fixtures, one of which is a movable fixture(Moving fixture)A fixed fixture is equipped with force and displacement sensors on the moving fixture. During the experiment, the two ends of the sample are clamped onto two fixtures, and the two fixtures move relative to each other. During the movement of the moving fixture, the force sensor automatically records the force changes during the process of the heat sealed edge being damaged.

4.2 Equipment parameters

l 500 NThe50 NTwo specifications of force sensors are available for selection, with a testing accuracy of0.5The level effectively ensures the accuracy of the experimental results.

l According to relevant standards, the equipment is provided50 mm/minThe100 mm/minThe150 mm/minThe200 mm/minThe250 mm/minThe300 mm/minThe500 mm/minSeven test speeds can be freely set according to the requirements of the test standards.

l 1000 mmThe ultra long travel can fully test materials with high deformation rates.

l Intelligent configurations such as limit protection, overload protection, automatic return, and power-off memory ensure user safety during operation.

l A testing machine integrates seven independent testing programs including stretching, peeling, tearing, etc., providing users with a variety of testing options.

4.3 Scope of Application

(1)This equipment can be used for testing the tensile properties, breaking force, tensile strength and deformation rate, tear resistance, peel strength, heat sealing strength, puncture resistance and other indicators of plastic films, composite films, thin films and other materials; Can be used for puncturing infusion bag caps, soft rubber bottle stoppers, and oral liquid caps/Testing of tensile strength; Can be used for testing product and packaging performance such as tape unwinding force, plastic bottle pressure resistance, combination cap and opening force of jelly cup, yogurt cup cap film, etc.

(2)This device can meet the requirementsISO 37TheGB/T 10004-2008TheGB 8808TheGB/T 1040.1-2006 ~ GB/T 1040.4-2006TheGB/T 1040.5-2008TheQB/T 2358TheQB/T 1130TheASTM D 882TheASTM D 1938TheASTM D 3330wait20Other relevant domestic and international standards.

5Experimental operation steps

(1)Cut the width from the four heat sealed edges of the packaging bag where oil leakage occurs15 mmThe expansion length is100 mmThe sample strip10One.

(2)Set parameters such as sample width and test speed.

(3)Clamp the two ends of the sample strip onto two fixtures, and the long axis direction of the sample strip should coincide with the centerline of the two fixtures.

(4)Click on the start experiment option, and the experiment will begin. The instrument automatically records the force values during the test process and calculates the test results.

6Test results

The test result shows that the average heat sealing strength of the upper edge is4.632 N/15mmThe average heat sealing strength of the lower edge is3.016 N/15mmThe average heat sealing strength of the left edge is5.917 N/15mmThe average heat sealing strength of the right edge is7.361 N/15mmThe low heat sealing strength values of the four heat sealed edges are the main reason for the oil leakage problem in the spicy sausage packaging bag.

7Summary

The sealing and heat sealing effect of packaging bags is a key factor related to whether there will be air leakage, liquid leakage, oil leakage and other problems in the packaging bags,XLW(PC)The intelligent electronic tensile testing machine can be professionally used for testing the heat sealing strength of packaging bags. The test results are accurate, the test accuracy is high, and the operation is simple. At the same time, the instrument can also be used for testing multiple properties such as peel strength, puncture resistance, tensile strength, and deformation rate of packaging bags, with a very high cost-effectiveness.LabthinkLanguang has always been committed to providing professional testing services and equipment to global customers, focusing on solving packaging related problems for customers. Learn moreLabthinkLan Guang's testing equipment and services can be accessed on the website of Jinan Lan Guang CompanyView specific information about the device or callconsulting service The more we understand, the more we trust! Jinan Languang Electromechanical Technology Co., Ltd. is willing to enhance technical exchanges and cooperation with enterprises and institutions in the industry through this opportunity.