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A conveyor belt and food technology, which is applied in the field of rubber products, can solve the problems of unsatisfactory vulcanized rubber odor and hygienic requirements, lower food hygiene and safety, and conveyor belts are prone to odor, etc., so that it is not easy to breed microorganisms, and the odor and hygienic conditions are improved. , cleanliness and high sense of security
Active Publication Date: 2017-08-11
SHANDONG YANXIN ENVIRONMENTAL PROTECTION TECH CO LTD
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Summary
Abstract
Description
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Problems solved by technology
Due to the complex composition and many by-products generated during the heating and vulcanization process, the final produced conveyor belt is prone to odor and contains toxic chemicals, so the hygiene and safety of the food used for transportation is greatly reduced, and the vulcanizate odor and hygiene requirements are not ideal
Method used
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Examples
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Effect test
Embodiment 1
[0026] The food-contact conveyor belt includes a polyester fiber cloth layer, and the outer side of the polyester fiber cloth layer is covered with a covering glue, and the covering glue is made of the following raw materials:
[0028] The preparation method of the food-contactable conveyor belt adopts the following steps:
[0029] Mix EPDM rubber in an internal mixer at 50°C for 3 minutes, then add white carbon black, nano-calcium carbonate, 3M vulcanizing agent, zinc oxide and paraffin oil and mix at 120°C for 15 minutes to obtain a cover rubber , and then use a calender to evenly cover the outer side of the polyester fiber cloth layer with the covering glue to obtain the food-contactable conveyor belt.
Embodiment 2
[0031] The food-contact conveyor belt includes a polyester fiber cloth layer, and the outer side of the polyester fiber cloth layer is covered with a covering glue, and the covering glue is made of the following raw materials:
[0032] 90 kg of EPDM rubber, 20 kg of white carbon black, 20 kg of nano-calcium carbonate, 1 kg of 3M vulcanizing agent, 3 kg of zinc oxide, and 4 kg of paraffin oil.
[0033] The preparation method is the same as in Example 1.
Embodiment 3
[0035] The food-contact conveyor belt includes a polyester fiber cloth layer, and the outer side of the polyester fiber cloth layer is covered with a covering glue, and the covering glue is made of the following raw materials:
[0036] 110 kg of EPDM rubber, 40 kg of white carbon black, 40 kg of nano-calcium carbonate, 2 kg of 3M vulcanizing agent, 5 kg of zinc oxide, and 6 kg of paraffin oil.
[0037] The preparation method is the same as in Example 1.
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PUM
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Abstract
The invention relates to the technical field of rubber products, and particularly discloses a conveyor belt contactable with food. The conveyor belt contactable with the food comprises a polyester fiber cloth layer, wherein the outer side of the polyester fiber cloth layer is coated with covering rubber, and the covering rubber is prepared from raw materials in parts by weight as follows: 90-110 parts of an EPDM (ethylene-propylene-diene monomer), 20-40 parts of white carbon black, 20-40 parts of nano calcium carbonate, 1-2 parts of a 3M vulcanizing agent, 3-5 parts of zinc oxide and 4-6 parts of paraffin oil. The conveyor belt has the benefits as follows: components are simple, by-products produced in the vulcanizing process are greatly reduced, meanwhile, low-molecule substances contained in the rubber are reduced correspondingly, the smell and the sanitary condition of vulcanized rubber are obviously improved, and the sanitation safety is greatly improved; the finally produced conveyor belt is safe and reliable to use, is not colored when contacting with vegetables, medicinal materials and the like, is higher in cleanness and safety and can be widely used for conveying the vegetables, the food, articles for daily use and the like.
Description
[0001] (1) Technical field [0002] The invention relates to the technical field of rubber products, in particular to a conveyor belt that can be in contact with food. [0003] (2) Background technology [0004] At present, most of the rubber materials used in domestic food conveyor belts are produced by traditional techniques, and the raw rubber is mainly natural rubber and ordinary synthetic rubber. Due to the poor aging resistance of the raw rubber used, it is necessary to add a variety of anti-aging agents to enhance the aging resistance of the rubber compound, and the sulfur vulcanization system is generally used, which requires sulfur and various chemical additives to complete the vulcanization. There are often more than a dozen raw materials, and the rubber contains more sulfur. Due to the complex composition and many by-products generated during the heating and vulcanization process, the final produced conveyor belt is prone to odor and also contains toxic chemicals, s...
Claims
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Application Information
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