CN101503536A - Insect-preventing air-conditioning preservative film for food - Google Patents
Insect-preventing air-conditioning preservative film for food Download PDFInfo
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- CN101503536A CN101503536A CNA2008101538143A CN200810153814A CN101503536A CN 101503536 A CN101503536 A CN 101503536A CN A2008101538143 A CNA2008101538143 A CN A2008101538143A CN 200810153814 A CN200810153814 A CN 200810153814A CN 101503536 A CN101503536 A CN 101503536A
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Abstract
A vermin-proof modified atmosphere preservative film for foodstuff is prepared by the following steps: by taking sumithion, Chuliangan and pepper dextrin, polyethylene wax, an antistatic agent, a lubricant, calcium carbonate, a titanate coupling agent, a plasticizer and low density polyethylene resin as raw materials; coating and dispersing, melt blending, extruding and granulating to prepare vermifugal master batches; and then adding the vermifugal master batches to the low density polyethylene resin at a ratio of 10-15% for film blowing and forming. The film can be used for producing bags with certain specifications for storing foodstuff; due to slow release of vermicide in the film and combination with spontaneous modified atmosphere physical vermin-proof property of foodstuff respiration, compared with the low density polyethylene film with the same thickness, the film has obvious repelling effect on imago of stored grain pests such as maize weevil, lesser grain borer and confused flour beetle; no residue of the vermicide is detected after packaging rice, maize and wheat for 3 months, the film has no food safety problem as a packaging material for food and is a common, safe, high-efficiency and low cost vermin-proof storage manner for foodstuff.
Description
Technical field
The invention belongs to the preparation method of new function plastic packing film, is insect-preventing air-conditioning preservative film for food of combining of a kind of spontaneous controlled-atmosphere with function for expelling pests and grain and preparation method thereof specifically.
Background technology
In the grain storage process, grain usually can be subjected to the harm of grain storage pest, loses quite serious.The loss that China causes because of insect pest every year is about the 3%-5% of total output of grain, and the grain storage of some under-developed areas can cause the loss of 10%-40% every year because of insect.Grain storage pest is not only eaten into the grain food, has increased the grain loss, but also reduces the eating quality and the nutritive value of grain.In recent years, countries in the world are paid much attention to the control of grain storage pest.Obtaining bigger progress aspect development and the agent of development of new insecticide for grains storage, grain protecting agent, vegetable insecticide, inert dust and the biological control technical study.The compound plastic film that contains sterilant that state is extrapolated, light touches mould insect prevention bag.Grain protectant grain storage peace that China promotes and deoxidation type family foodstuff preservation bag etc., though can both reach the effect of insect protected, also there are many shortcomings in above-mentioned technology.For example compound plastic film complex manufacturing, the cost height, and sterilants such as grain storage peace all are directly to admix in the grain, and grain is had certain pollution, be not only the quality of grain is descended to some extent, and the medicament of grain and goods is residual that HUMAN HEALTH is also had certain negative impact.
For quickening China's grain storage pest controlling technical progress, reduce the loss of grain in producing, storing, use for reference advanced foreign technology, consult a large amount of patents and research paper, according to China's national situation, it is remarkable to have developed a kind of repellent effect to main grain storage pest, and production technique is simple, popularize easily, safety, efficiently, grain insect prevention storage mode cheaply.
Summary of the invention
The purpose of this invention is to provide a kind of in the common polythene plastic film course of processing, the interpolation through blending dispersion, coupling processing, melt blending is extruded the preparation method of the insect-preventing air-conditioning preservative film for food that pelletizing and blowing forms.
Content of the present invention: insect-preventing air-conditioning preservative film for food is characterized in that:
Prescription: part grain storage peace of the Sumithion of 2-3 part, 2-3, the Chinese prickly ash dextrin of 4-5 part, the polyethylene wax of 1.5-2 part, the static inhibitor of 0.8-1 part, the opening agent of 0.5-0.7 part, the lime carbonate of 2-3 part, the ldpe resin of 75-90 part.
Wherein: static inhibitor: polyethylene oxide (20) Zerol.
Opening agent: amine hydroxybenzene.
Preparation technology's method of described insect-preventing air-conditioning preservative film for food: by the prescription of described insect-preventing air-conditioning preservative film for food, with Sumithion, grain storage peace, the Chinese prickly ash dextrin is composite is placed in the stirrer, adds PE wax, blending dispersion is made raw material I after 20 minutes; Lime carbonate is placed stirrer, add the titanate coupling agent coupling processing and make raw material II after 30 minutes; Then raw material I and raw material II are mixed to be placed on to mix in the high-speed mixer being placed in the twin screw extruder melt blending and extruding and be cut into the expelling parasite master batch, add LDPE resin, static inhibitor, opening agent and softening agent then, place upwards blowing film forming of inflation film manufacturing machine.
Characteristics of the present invention: insect-preventing air-conditioning preservative film for food of the present invention is tested through China Packaging Research ﹠ Test Center, and fracture longitudinal tensile strain degree reaches 863%, and contrast improves 5%, and transverse tensile strength is that contrast improves 11%, and rate of perviousness reduces by 9%, saturating O
2Rate reduces by 18%, CO
2Transmitance has increased by 2%, and by the national health check, has studied the repellent effect to main grain storage pest sitophilus zea-mais, confused flour beetle, lesser grain borer simultaneously.The result shows: the repellent effect to 3 kinds of main grain storage pest sitophilus zea-maises, lesser grain borer, confused flour beetle adult is remarkable, and average scattering ratio is respectively 78.15%, 74.56%, 82.03%.And its production technique is simple, popularizes easily, safety, efficiently, grain insect prevention storage mode cheaply.
The physicals analysis of insect-preventing air-conditioning preservative film for food
The sanitary index standard of insect-preventing air-conditioning preservative film for food
Insect-preventing air-conditioning preservative film for food is to the scattering ratio of 3 kinds of grain storage pest adults
Figure of description
Fig. 1 is insect-preventing air-conditioning preservative film for food preparation method's a process flow sheet
Embodiment
Example one: material: Sumithion, grain storage peace, Chinese prickly ash dextrin, PE wax, static inhibitor: polyethylene oxide (20) Zerol, opening agent: amine hydroxybenzene, lime carbonate, titanate coupling agent, softening agent and LDPE resin:
The employing compositing formula is: with weight ratio
2 kilograms of Sumithions,
2 kilograms of grain storage peaces,
4 kilograms in Chinese prickly ash dextrin,
1.5 kilograms of polyethylene waxs,
0.8 kilogram in static inhibitor,
0.5 kilogram of opening agent,
2 kilograms in lime carbonate,
75 kilograms of ldpe resins.
The preparation method is according to filling a prescription Sumithion, grain storage peace, Chinese prickly ash dextrin and master batch in stirrer, and rotating speed is: 150r/min, and temperature is: 65 ℃, the adding molecular weight is 2000 PE wax, and blending dispersion is made raw material I after 20 minutes; With particle diameter is that the lime carbonate of 0.1-1um places stirrer, and rotating speed is: 200r/min, and temperature is: 70 ℃, add the titanate coupling agent coupling processing and make raw material II after 30 minutes; Then raw material I and raw material II are mixed to be placed on to mix in the high-speed mixer being placed in the twin screw extruder melt blending and extruding and be cut into the expelling parasite master batch, add LDPE resin, static inhibitor, opening agent and softening agent then, place upwards blowing film forming of inflation film manufacturing machine.
Each section temperature of wherein extruding twin screw extruder in the pelletizing process is respectively: die head: 90 ℃; I district: 105 ℃; II district: 119 ℃; III district: 131 ℃; IV district: 140 ℃.
The film forming screw speed of blowing is 45r/min, and four sections temperature of its twin screw extruder are successively: the I district: 100 ℃, II district: 145 ℃, III district: 160 ℃, 180 ℃.
Example two: compositing formula is:
3 kilograms of Sumithions,
3 kilograms of grain storage peaces,
5 kilograms in Chinese prickly ash dextrin,
2 kilograms of polyethylene waxs,
1 kilogram in static inhibitor,
0.7 kilogram of opening agent,
3 kilograms in lime carbonate,
90 kilograms of ldpe resins.
Example three: compositing formula is:
2.5 kilograms of Sumithions,
2.5 kilograms of grain storage peaces,
4.5 kilograms in Chinese prickly ash dextrin,
1.8 kilograms of polyethylene waxs,
0.9 jin in static inhibitor,
0.6 jin of opening agent,
Lime carbonate 2.5,
80 jin of ldpe resins.
Claims (2)
1, a kind of insect-preventing air-conditioning preservative film for food is characterized in that:
Compositing formula is: with weight ratio
Sumithion 2-3 part,
Grain storage peace 2-3 part,
Chinese prickly ash dextrin 4-5 part,
Polyethylene wax 1.5-2 part,
Static inhibitor: 0.3~1.5 part of polyethylene oxide (20) Zerol,
Opening agent: 0.3~1.0 part of amine hydroxybenzene
Lime carbonate 2-3 part,
Ldpe resin 75-90 part.
2. insect-preventing air-conditioning preservative film for food preparation technology method according to claim 1: preparation method: with Sumithion, grain storage peace, the Chinese prickly ash dextrin is composite is placed in the stirrer, adds PE wax, blending dispersion is made raw material I after 20 minutes; Lime carbonate is placed stirrer, add the titanate coupling agent coupling processing and make raw material I I after 30 minutes; Then raw material I and raw material II are placed high-speed mixer to mix to be placed on the twin screw extruder melt blending to extrude and be cut into the expelling parasite master batch, add LDPE resin, opening agent and static inhibitor functional materials then, place upwards blowing film forming of inflation film manufacturing machine at last:
Each section temperature of wherein extruding twin screw extruder in the pelletizing process is respectively: die head: 90-100 ℃; I district: 100-110 ℃; II district: 115-123 ℃; III district: 128-135 ℃; IV district: 140-142 ℃;
During the blowing film forming: the screw speed of twin screw extruder is 45r/min; Wherein four sections temperature are successively: the I district: 100 ℃, II district: 145 ℃, III district: 160 ℃, IV district: 180 ℃.
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CNA2008101538143A CN101503536A (en) | 2008-12-08 | 2008-12-08 | Insect-preventing air-conditioning preservative film for food |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102617906A (en) * | 2012-02-09 | 2012-08-01 | 西华大学 | Storage, sterilization and pest preventing freshness-keeping film for broad bean, and preparation method thereof |
CN104558744A (en) * | 2013-10-21 | 2015-04-29 | 广东美的厨房电器制造有限公司 | Master batch for plastic product as well as preparation method, plastic product and preparation method of master batch |
CN113637251A (en) * | 2021-08-23 | 2021-11-12 | 河南天丰生物科技有限公司 | Insect-proof modified material for tobacco storage and application thereof |
CN114984781A (en) * | 2022-05-06 | 2022-09-02 | 山东恒鹏卫生用品有限公司 | Composite film for grain storage and packaging and preparation method thereof |
-
2008
- 2008-12-08 CN CNA2008101538143A patent/CN101503536A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102617906A (en) * | 2012-02-09 | 2012-08-01 | 西华大学 | Storage, sterilization and pest preventing freshness-keeping film for broad bean, and preparation method thereof |
CN104558744A (en) * | 2013-10-21 | 2015-04-29 | 广东美的厨房电器制造有限公司 | Master batch for plastic product as well as preparation method, plastic product and preparation method of master batch |
CN113637251A (en) * | 2021-08-23 | 2021-11-12 | 河南天丰生物科技有限公司 | Insect-proof modified material for tobacco storage and application thereof |
CN114984781A (en) * | 2022-05-06 | 2022-09-02 | 山东恒鹏卫生用品有限公司 | Composite film for grain storage and packaging and preparation method thereof |
CN114984781B (en) * | 2022-05-06 | 2024-03-08 | 山东恒鹏卫生用品有限公司 | Composite film for grain storage and packaging and preparation method thereof |
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Open date: 20090812 |