CN103192560A - Food and medicine conveyor belt and making method thereof - Google Patents
Food and medicine conveyor belt and making method thereof Download PDFInfo
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- CN103192560A CN103192560A CN201210004459XA CN201210004459A CN103192560A CN 103192560 A CN103192560 A CN 103192560A CN 201210004459X A CN201210004459X A CN 201210004459XA CN 201210004459 A CN201210004459 A CN 201210004459A CN 103192560 A CN103192560 A CN 103192560A
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Abstract
The invention relates to a food and medicine conveyor belt and a making method thereof. The conveyor belt is a four-layer structure conveyor belt formed by compounding a food grade silica gel coat, a mesh fabric interlayer, a soft PVC layer and a compact fabric substrate which are sequentially arrayed from top to bottom. The food and medicine conveyor belt is made through a hot pressing and coating technology. The preparation method comprises the following steps: setting the mesh fabric and the compact fabric, carrying out hot pressing compounding of the set mesh fabric and compact fabric and PVC, and coating the surface by a food grade silica gel to form a finished product. Compared with conveyor belts in the prior art, the conveyor belt provided by the invention has the advantages of long service life, low cost, reaching of food and medicine contact standards, and suitableness for the food and medicine fields.
Description
Technical field
The present invention relates to a kind of silica gel conveying belt, especially relate to a kind of food and medicine conveyer belt and preparation method thereof.
Background technology
Conveyer belt is that the important set of ribbon conveyer is wanted parts, the main carrying material that plays a part, since ribbon conveyer have transmission efficiency height, handling safety, easy to use, safeguard characteristic of simple, be widely used in greatly having improved production efficiency in the industrial production streamline.
The kind of conveyer belt is more, can be divided into fabric core conveyor belt, integral fabric belt carcass, steel cable core conveying belt, steel mesh conveyer belt and steel cable conveyor belt according to the difference of conveyer belt belt carcass.Wherein textile belt belongs to light-duty conveyer belt, is mainly used in the lower occasion of load-bearing, and it is several to mainly contain duck belt carcass, polyamide fibre canvas belt carcass, polyester canvas belt carcass, aramid fiber canvas belt carcass, integral fabric belt carcass etc.
Food in the market, medicine is mainly the PU material with conveyer belt, because PU conveyer belt commonly used is the environment-friendly type polyester TPU of easily biological-degradable on the market, the cellular construction of its open chain can allow air therefrom to walk, this molecular structure characteristics cause its attack to microorganism responsive especially, thereby cause the spore of fungi and bacterium to deposit therein, so still have defective in antibiotic application scenario of having relatively high expectations, Chinese patent CN102167212A discloses a kind of fresh food and has carried with antibiotic polyether-type TPU conveyer belt and manufacture method thereof, adds the antibacterial effect that nano silver antimicrobials improves conveyer belt in TPU; Chinese patent CN201494878 discloses a kind of grocery trade silica gel conveying belt, by the dacron skeleton as sandwich layer, in dacron skeleton upper and lower surface coated with silica gel as the top layer, this technical scheme adopts silica gel to have better anti-bacterial effect as the top layer, but the adhesiveness of top layer silica gel is bad, easily peel off, and the creep-resistant property of this conveyer belt and service life are unsatisfactory.
Summary of the invention
Purpose of the present invention provides a kind of long service life, cost low for the defective that overcomes above-mentioned prior art and exist, reach contact food, the drug standards, is applicable to food and medicine conveyer belt of food, medicine field and preparation method thereof.
Purpose of the present invention can be achieved through the following technical solutions: a kind of food and medicine conveyer belt, this conveyer belt is the four-layer structure conveyer belt of the food-grade silica-gel coating, mesh fabric intermediate layer, PVC softwood layer and the compound composition of densified fabric bottom that are arranged in order from top to bottom.
A kind of preparation method of food and medicine conveyer belt, the step of this method is as follows:
1) with mesh fabric, densified fabric respectively through knitting framing shaping machine stentering forming;
2) with the front applying mesh fabric of PVC softwood, after the reverse side applying densified fabric, compound through vulcanizing press hot pressing;
3) apply layer food level silica gel at the mesh fabric upper surface, after the products obtained therefrom side applies layer food level silica gel, send into the curing oven moulding then, can make finished product.
Described mesh fabric, densified fabric are nylon material, and thickness is 0.1-0.3mm, and mesh fabric is provided with fine and closely woven mesh, and mesh size is 0.01mm * 0.01mm-0.05mm * 0.05mm, grammes per square metre 100-150g/m
2, densified fabric is the casing play of 900-1200D.
Described PVC softwood is the PVC soft sheet material, and thickness is 2-4mm, preferred lead-free PVC soft sheet material.
The raw material of described food-grade silica gel comprises following component and weight portion content: the two component liquid silastic 75-85 weight portions of coating, food-grade calcium carbonate 15-25 weight portion.
Described coating is two high temperature vulcanized silica gel of component condensed type with two component liquid silastics, comprise A component and B component, wherein the A component is hydroxy-end capped polysiloxanes rubber and ethyl orthosilicate crosslinking agent, the B component is the tin octylate catalyst, and the weight portion ratio of A component and B component is 1: 1 or 10: 1.
Preferred 1: 1 of the weight portion ratio of described A component and B component.
The preparation method of described food-grade silica gel is for drying by the fire 4-8h with food-grade calcium carbonate earlier in baking oven, oven temperature is 90-110 ℃, take by weighing the coating of corresponding weight by each formula rate with two component liquid silastics and food-grade calcium carbonate, stir namely in the adding mixer.
Described step 2) the compound process conditions of the hot pressing in are temperature 160-175 ℃, time 15-20min.
The temperature of the curing molding in the described step 3) is 110-140 ℃, and the time is 2-8min.
Compared with prior art, the present invention has the following advantages:
1) the food and medicine conveyer belt contact food of the present invention's preparation, the top layer food-grade silica gel of medicine are the very high linear macromolecule elastomeric materials that contains silicon oxygen bond of a kind of heat endurance, it has the performance of excellent anti-ozone aging, oxygen aging, light aging and Weather, and the heavy metal of food-grade silicon rubber (in Pb) content is lower than 0.5ppm, the product n-hexane evaporation residue＜400mg/L after the coating.Compare used PU foodweb on the market, additive, anti-microbial property and sanitation and hygiene performances such as the anti-hydrolytic performance of the food and medicine conveyer belt of the present invention's preparation, the grease of anti-the animal or plant are more excellent, and precipitate still less in the use.Be not stained with food in the conveyer belt use, be easy to clean, and the top layer be smooth smooth, can not occur clinging the phenomenon of transported material in course of conveying.
2) the present invention creatively is combined into a kind of food and medicine conveyer belt with food-grade silica gel, nylon wire lattice fabric, PVC film, nylon densified fabric.Compared with prior art, both solved the TPU used for conveyer belt can not reach the food-grade standard in fresh food transportation sanitation and hygiene and hydrolysis aspect problem, solved simultaneously that the anti-weak acid of existing silica gel conveying belt, alkali, organic solution, animal and plant, mineral oil and fatty performance are weak, that tension is torn intensity is low, shortcoming such as yielding, and the food-grade layer of silica gel thickness that directly contacts with food is big, difficult drop-off.
3) the food and medicine conveyer belt of the present invention preparation adopts the PVC material as core material, the foodweb cost that has increased textile armature and PVC bottom is lower, tension tearing strength height, creep-resistant property are good, not yielding, thickness evenly, long service life; Be to be coated on the mesh fabric with fine and closely woven mesh owing to food-grade silica gel simultaneously, the silica gel difficult drop-off, it is big to adhere to layer of silica gel thickness.
4) the food and medicine conveyer belt employing nylon densified fabric of the present invention's preparation is bottom, contacts with transmission system with supporter, has excellent properties such as anti-skidding, wear-resisting.
5) preparation method of food and medicine conveyer belt provided by the invention is with the PVC film two layers of fabric of directly fitting, and operating procedure is simple, and continued operation is strong, manufacturing process is comparatively simple, one presses one to be coated with, and saves production cost, avoids the loaded down with trivial details technology of traditional two cloth, two plastic structures palpus second glue spreading secondary drying.
Description of drawings
Fig. 1 is the cross-sectional view of conveyer belt of the present invention;
Fig. 2 is preparation technology's flow chart of food and medicine conveyer belt of the present invention.
Among the figure: 1 is the food-grade silica-gel coating, and 2 is the mesh fabric intermediate layer, and 3 is PVC softwood layer, and 4 is the densified fabric bottom.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1～3
As shown in Figure 1, a kind of food and medicine conveyer belt is the four-layer structure conveyer belt of the food-grade silica-gel coating 1, mesh fabric intermediate layer 2, PVC softwood layer 3 and the densified fabric bottom 4 compound compositions that are arranged in order from top to bottom.
As shown in Figure 2, this food and medicine conveyer belt adopts hot pressing and coating processes to be made, and its production procedure is in regular turn: mesh fabric and densified fabric typing, compound with PVC hot pressing, with food-grade silica gel coating surface layer, finished product.Its concrete steps are:
The first step: (Taizhou city is unified into cloth industry Co., Ltd, and mesh size is 0.01mm * 0.01mm, grammes per square metre 120g/m with the mesh fabric of nylon material
2) and densified fabric (Taizhou city is unified into cloth industry Co., Ltd, 1000D) through tentering and the thermal finalization under the process conditions of 160 ℃ of drying room operating temperatures, speed 40m/min of knitting framing shaping machine;
Second step: with the front applying mesh fabric of leadless environment-friendly PVC softwood (Zhenjiang Tian Run plastic cement Co., Ltd, thickness 2mm), after the reverse side applying densified fabric, 170 ℃ of temperature, hot pressing is compound under the time 20min through vulcanizing press;
The 3rd step: apply layer food level silica gel at the mesh fabric upper surface, send into the curing oven moulding then after the products obtained therefrom side applies layer food level silica gel, temperature is 120 ℃, and the time is 3min, can make finished product.
Wherein, food-grade silica gel is filled a prescription as table 1:
Table 1
Wherein, coating is with two component liquid silastics (Shenzhen molecular material Co., Ltd that hits new peak, trade mark HTCS-1310H) be two high temperature vulcanized silica gel of component condensed type, the A component is hydroxy-end capped polysiloxanes rubber and ethyl orthosilicate crosslinking agent, and the B component is the tin octylate catalyst; Food-grade calcium carbonate is provided by Shanghai, river, Shanghai titanium white heavy chemicals Co., Ltd.
Food-grade silica gel production method is as follows:
Earlier food-grade calcium carbonate is dried by the fire 5h in baking oven, oven temperature is 100 ℃.Take by weighing the coating of corresponding weight by the prescription among each embodiment with two component liquid silastics and food-grade calcium carbonate, stir in the adding mixer, namely can be used for applying.
The food and medicine conveyer belt that above-mentioned three embodiment make is tested test result such as table 2 according to HG/T 2818-1996:
Table 2
PU foodweb on the market is carried out food, drug safety detection by the USAFDA standard, result such as table 3 with the food and medicine conveyer belt that above-mentioned three embodiment make as a comparison case:
Table 3
As shown in Table 3, the silica gel conveying belt amount of separating out under various conditions in each case study on implementation all is less than the desired limit value of standard, obviously be better than the PU foodweb, this novel foodstuff medicine conveyer belt safety non-toxic, meet hygienic requirements, harmless, meet U.S. FDA food safety and sanitation standard fully.
Embodiment 4
A kind of preparation method of food and medicine conveyer belt, the step of this method is as follows:
1) with mesh fabric, densified fabric respectively through knitting framing shaping machine stentering forming, wherein: described mesh fabric, densified fabric are nylon material, and thickness is 0.1mm, and mesh fabric is provided with fine and closely woven mesh, mesh size is 0.05mm * 0.05mm, grammes per square metre 100/m
2, densified fabric is the casing play of 1200D.
2) with the front applying mesh fabric of PVC softwood, compound through vulcanizing press hot pressing after the reverse side applying densified fabric, the compound process conditions of hot pressing are 160 ℃ of temperature, time 20min; Described PVC softwood is the lead-free PVC soft sheet material, and thickness is 4mm.
3) apply layer food level silica gel at the mesh fabric upper surface, send into the curing oven moulding then after the products obtained therefrom side applies layer food level silica gel, the temperature of curing molding is 110 ℃, and the time is 8min, can make finished product.
The preparation method of described food-grade silica gel is for drying by the fire 4h with food-grade calcium carbonate earlier in baking oven, oven temperature is 110 ℃, takes by weighing two component liquid silastic 75 weight portions of coating then, and food-grade calcium carbonate 25 weight portions stir namely in the adding mixer.
Embodiment 5
A kind of preparation method of food and medicine conveyer belt, the step of this method is as follows:
1) with mesh fabric, densified fabric respectively through knitting framing shaping machine stentering forming, wherein: described mesh fabric, densified fabric are nylon material, and thickness is 0.3mm, and mesh fabric is provided with fine and closely woven mesh, mesh size is 0.02mm * 0.02mm, grammes per square metre 150g/m
2, densified fabric is the casing play of 900D.
2) with the front applying mesh fabric of PVC softwood, compound through vulcanizing press hot pressing after the reverse side applying densified fabric, the compound process conditions of hot pressing are 175 ℃ of temperature, time 15min; Described PVC softwood is the lead-free PVC soft sheet material, and thickness is 2mm.
3) apply layer food level silica gel at the mesh fabric upper surface, send into the curing oven moulding then after the products obtained therefrom side applies layer food level silica gel, the temperature of curing molding is 140 ℃, and the time is 2min, can make finished product.
The preparation method of described food-grade silica gel is for drying by the fire 8h with food-grade calcium carbonate earlier in baking oven, oven temperature is 90 ℃, takes by weighing two component liquid silastic 85 weight portions of coating then, and food-grade calcium carbonate 15 weight portions stir namely in the adding mixer.
Claims (10)
1. a food and medicine conveyer belt is characterized in that, this conveyer belt is the four-layer structure conveyer belt of the food-grade silica-gel coating, mesh fabric intermediate layer, PVC softwood layer and the compound composition of densified fabric bottom that are arranged in order from top to bottom.
2. the preparation method of a food and medicine conveyer belt as claimed in claim 1 is characterized in that, the step of this method is as follows:
1) with mesh fabric, densified fabric respectively through knitting framing shaping machine stentering forming;
2) with the front applying mesh fabric of PVC softwood, after the reverse side applying densified fabric, compound through vulcanizing press hot pressing;
3) apply layer food level silica gel at the mesh fabric upper surface, after the products obtained therefrom side applies layer food level silica gel, send into the curing oven moulding then, can make finished product.
3. the preparation method of a kind of food and medicine conveyer belt according to claim 2, it is characterized in that, described mesh fabric, densified fabric are nylon material, thickness is 0.1-0.3mm, mesh fabric is provided with fine and closely woven mesh, mesh size is 0.01mm * 0.01mm-0.05mm * 0.05mm, grammes per square metre 100-150g/m
2, densified fabric is the casing play of 900-1200D.
4. the preparation method of a kind of food and medicine conveyer belt according to claim 2 is characterized in that, described PVC softwood is the PVC soft sheet material, and thickness is 2-4mm, preferred lead-free PVC soft sheet material.
5. the preparation method of a kind of food and medicine conveyer belt according to claim 2, it is characterized in that, the raw material of described food-grade silica gel comprises following component and weight portion content: the two component liquid silastic 75-85 weight portions of coating, food-grade calcium carbonate 15-25 weight portion.
6. the preparation method of a kind of food and medicine conveyer belt according to claim 5, it is characterized in that, the preparation method of described food-grade silica gel is for drying by the fire 4-8h with food-grade calcium carbonate earlier in baking oven, oven temperature is 90-110 ℃, take by weighing the coating of corresponding weight by each formula rate with two component liquid silastics and food-grade calcium carbonate, stir namely in the adding mixer.
7. according to the preparation method of a kind of food and medicine conveyer belt described in claim 5 or 6, it is characterized in that, described coating is two high temperature vulcanized silica gel of component condensed type with two component liquid silastics, comprise A component and B component, wherein the A component is hydroxy-end capped polysiloxanes rubber and ethyl orthosilicate crosslinking agent, the B component is the tin octylate catalyst, and the weight portion ratio of A component and B component is 1: 1 or 10: 1.
8. the preparation method of a kind of food and medicine conveyer belt according to claim 7 is characterized in that, preferred 1: 1 of the weight portion ratio of described A component and B component.
9. the preparation method of a kind of food and medicine conveyer belt according to claim 2 is characterized in that, described step 2) in the compound process conditions of hot pressing be temperature 160-175 ℃, time 15-20min.
10. the preparation method of a kind of food and medicine conveyer belt according to claim 2 is characterized in that, the temperature of the curing molding in the described step 3) is 110-140 ℃, and the time is 2-8min.
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| CN201210004459.XA CN103192560B (en) | 2012-01-06 | 2012-01-06 | Food and medicine conveyor belt and making method thereof |
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| CN201210004459.XA CN103192560B (en) | 2012-01-06 | 2012-01-06 | Food and medicine conveyor belt and making method thereof |
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| CN103192560B CN103192560B (en) | 2017-01-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524863A (en) * | 2021-07-20 | 2021-10-22 | 李秋语 | Annular conveying belt manufacturing process and annular conveying belt |
| CN114249008A (en) * | 2020-09-22 | 2022-03-29 | 安徽御壶匠农业科技有限公司 | Wine gourd structure and manufacturing process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1067065A2 (en) * | 1999-07-08 | 2001-01-10 | Chemfab Corporation | Flexible composites and metods for making the same |
| CN101830335A (en) * | 2010-05-06 | 2010-09-15 | 上海永利带业股份有限公司 | Conveyer belt taking warp-knitted bi-axial fabric as framework and manufacturing method thereof |
| CN102285519A (en) * | 2011-04-28 | 2011-12-21 | 上海永利带业股份有限公司 | Light conveyer belt for seed industry and manufacturing method thereof |
-
2012
- 2012-01-06 CN CN201210004459.XA patent/CN103192560B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1067065A2 (en) * | 1999-07-08 | 2001-01-10 | Chemfab Corporation | Flexible composites and metods for making the same |
| CN101830335A (en) * | 2010-05-06 | 2010-09-15 | 上海永利带业股份有限公司 | Conveyer belt taking warp-knitted bi-axial fabric as framework and manufacturing method thereof |
| CN102285519A (en) * | 2011-04-28 | 2011-12-21 | 上海永利带业股份有限公司 | Light conveyer belt for seed industry and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249008A (en) * | 2020-09-22 | 2022-03-29 | 安徽御壶匠农业科技有限公司 | Wine gourd structure and manufacturing process thereof |
| CN113524863A (en) * | 2021-07-20 | 2021-10-22 | 李秋语 | Annular conveying belt manufacturing process and annular conveying belt |
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| CN103192560B (en) | 2017-01-18 |
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Denomination of invention: Food and medicine conveyor belt and making method thereof Effective date of registration: 20191202 Granted publication date: 20170118 Pledgee: Chuzhou economic and Technological Development Corporation Pledgor: Shanghai Jieshijie New Materials (Group) Co., Ltd. Registration number: Y2019980000815 |