Glass pressing block for food contact material and product migration test

Abstract

The utility model relates to a glass pressing block for a food contact material and product migration test, which comprises a framework, a glass pressing block and a glass pressing block, the multiple supporting bodies are arranged on the same end face of the frame and located at the corners of the frame; each supporting body is of a hemispherical structure; the structure has the advantages of simplicity in operation, stable structure, small occupied space, easiness in cleaning and storage, and universality for sample size or material, and solves the problems that the sample cannot be completely separated and completely immersed due to sample floating caused by the fact that the density of the sample is lower than the density of a soaking solution.

Description

Technical Field

[0001] The utility model relates to a migration test of food contact materials and products, in particular to a glass pressing block for the migration test of food contact materials and products. Background Art

[0002] With the enrichment of material life, people's requirements for the strength and freshness of food contact materials have gradually increased, and the types of food contact materials have also become more diverse. In the process of contact with food, some components in food contact materials will gradually migrate into food, which will cause health hazards after human consumption. Therefore, food safety can be controlled by controlling the amount of related substances in food contact materials that migrate or remain in food.

[0003] At present, GB 5009.156-2016 "General Rules for Pretreatment Methods of Migration Tests for Food Contact Materials and Articles, National Food Safety Standard" (hereinafter referred to as "General Rules") has made detailed requirements for migration tests of food contact materials. However, in actual operation, the sample density is often lower than the density of the immersion liquid, which causes the sample to float and cannot be completely immersed. In addition, the glass beads, glass rods, and glass bead auxiliary tools mentioned in the "General Rules" will roll during the migration test and cannot completely press the sample due to their round, smooth, and small size, resulting in the problem that the sample cannot be completely separated and cannot be completely immersed. Auxiliary tools such as brackets are also only applicable to samples of specific sizes or materials due to their complex structures. Therefore, it is urgent to select more convenient and universal auxiliary tools to optimize the migration determination test. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to immerse the sample in the soaking liquid without rolling.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The utility model is a glass block for migration test of food contact materials and products, comprising: a frame, which is a regular polygonal structure; a plurality of support bodies, which are arranged at the same end surface of the frame and located at the corners of the frame; each of the support bodies is a hemispherical structure;

[0007] In this solution, the glass pressing block is pressed against the sample, and the sample is immersed in the immersion liquid by gravity. Specifically, the support body is in contact with the sample, and the entire glass pressing block is flat and the coverage area is increased, so that the glass pressing block will not slide relative to the sample;

[0008] In addition, the conventional design does not take into account the problem that the solution needs to be fully and evenly dispersed in the migration test. After improvement, the glass block itself is designed to be fully hollow (that is, there is space between the support body and the end face of the frame) and can press the sample. At the same time, there are hemispherical supports at the corners of the glass block to ensure that the immersion solution is fully and evenly dispersed, reducing the contact area between the support body and the sample.

[0009] When the sample is immersed in the soaking liquid, if the size of the tested sample is small, the sample will drill out from the hole formed in the middle of the frame and float during the soaking process; in addition, when the sample is made of some special materials, the soaking liquid will soak the middle of the sample and cause it to bulge, which may seriously cause the sample to bulge and break; in order to avoid the above situation, the utility model adopts a connecting rod connected to the inner side of the frame provided in the frame;

[0010] By setting a connecting rod, the connecting rod is located in the frame, so that the arched middle part of the sample will contact the connecting rod. The mesh hollow design formed by the connecting rod can clamp a small piece of sample to limit its continued floating; the connecting rod can limit the continued arching of the middle part of the sample; in addition, setting the connecting rod can strengthen the overall strength of the frame, increase the overall weight of the glass block, and then press the sample to prevent sliding.

[0011] In order to be able to press and hold multiple samples, the utility model adopts that the top and bottom end surfaces of the frame are both provided with the support body;

[0012] In this way, the upper and lower end surfaces of the glass block in this scheme are both provided with a support body, and the specific operation steps are: take a glass block and place it flat in an experimental container (the type of food simulant and the time of adding the food simulant are selected according to the selected migration test method), put a sample in it flatly, and then take another glass block and place it flat on the sample (if multiple samples need to be placed, then put the sample and the glass block of the present invention in turn to ensure that the surface of the sample is completely entered and the samples are kept completely separated), and then conduct a migration test; in this way, there is a sample between the upper and lower glass blocks, and there is a glass block between the two samples. For the glass blocks, the glass block at the bottom end surface plays a supporting role, and the glass block at the top end surface plays a pressing role.

[0013] The beneficial effects of the utility model are as follows: the utility model is a glass pressing block for migration test of food contact materials and products. The structure has the advantages of simple operation, stable structure, small space occupation, easy cleaning, easy storage, and universality for sample size or material. It also solves the problem that the sample floats and cannot be completely separated or completely immersed due to the sample density being lower than the immersion liquid density. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is the coordination diagram of two glass blocks and the sample;

[0017] In the figure: 1-glass block, 2-frame, 3-support body, 4-connecting rod, 5-sample. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] like Figure 1 As shown, the utility model is a glass block 1 for migration test of food contact materials and products, for a glass sample 5 of rectangular structure, comprising: a frame 2, which is a regular quadrilateral structure; four support bodies 3, which are arranged at the same end surface of the frame 2 and located at the corners of the frame 2; each support body 3 is a hemispherical structure, that is, the structure is in a top view. shape, with two hemispherical supports 3 at the four corners;

[0020] In this solution, the glass block is pressed against a rectangular sample 5, and the sample 5 is immersed in the immersion liquid by gravity. Specifically, the support body is in contact with the sample 5, and the entire glass block is flat and the coverage is increased, so that the glass block will not slide relative to the sample 5.

[0021] In addition, the conventional design does not take into account the problem that the solution needs to be fully and evenly dispersed in the migration test. After improvement, the glass block itself is designed to be fully hollow (that is, there is space between the support body and the end face of the frame) and can press the sample. At the same time, there are hemispherical supports at the corners of the glass block to ensure that the immersion liquid is fully and evenly dispersed, reducing the contact area between the support body and the sample 5.

[0022] like Figure 1 As shown, when the sample is immersed in the soaking liquid, when the size of the tested sample is small, the sample will drill out from the hole formed in the middle of the frame and float during the soaking process; in addition, when the sample is made of some special materials, the soaking liquid will soak the middle of the sample and cause it to bulge, which may seriously cause the sample to bulge and break; in order to avoid the above situation, the utility model adopts a connecting rod 4 connected to the inner side of the frame 2 provided in the frame 2;

[0023] By setting a connecting rod, the connecting rod is located in the frame, so that the arched middle part of the sample will contact the connecting rod. The mesh hollow design formed by the connecting rod can clamp a small piece of sample to limit its continued floating; the connecting rod can limit the continued arching of the middle part of the sample; in addition, setting the connecting rod can strengthen the overall strength of the frame, increase the overall weight of the glass block, and then press the sample to prevent sliding.

[0024] like Figure 2 As shown, in order to be able to press and hold multiple samples 5, the utility model uses four support bodies 3 on the top and bottom end surfaces of the frame 2;

[0025] In this way, the upper and lower end surfaces of the glass block in this scheme are both provided with a support body, and the specific operation steps are: take a glass block and place it flat in an experimental container (the type of food simulant and the time of adding the food simulant are selected according to the selected migration test method), put a sample 5 flat, and then take another glass block and place it flat on top of the sample 5 (if multiple samples need to be placed, then put the sample 5 and the glass block of the present invention in turn to ensure that the surface of the sample 5 is completely entered and the sample 5 is kept completely separated), and then conduct a migration test; in this way, there is a sample 5 between the upper and lower glass blocks, and there is a glass block between the two samples 5. For the glass blocks, the glass block at the bottom end surface plays a supporting role, and the glass block at the top end surface plays a pressing role.

[0026] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A glass block for migration test of food contact materials and products, characterized in that: include: A frame, which is a regular polygonal structure; A plurality of support bodies, which are arranged at the same end surface of the frame and located at the corners of the frame; Each of the supporting bodies is a hemispherical structure.

2. The glass block for migration test of food contact materials and products according to claim 1, characterized in that: A connecting rod connected to the inner side of the frame is arranged in the frame.

3. The glass block for migration test of food contact materials and products according to claim 1, characterized in that: The support body is disposed on the top and bottom end surfaces of the frame.

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