CN102212982A - Far infrared insect-proof and waterproof refreshing fruit packaging material produced by utilizing yellow soil and manufacturing method thereof - Google Patents
Far infrared insect-proof and waterproof refreshing fruit packaging material produced by utilizing yellow soil and manufacturing method thereof Download PDFInfo
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- CN102212982A CN102212982A CN201010145373XA CN201010145373A CN102212982A CN 102212982 A CN102212982 A CN 102212982A CN 201010145373X A CN201010145373X A CN 201010145373XA CN 201010145373 A CN201010145373 A CN 201010145373A CN 102212982 A CN102212982 A CN 102212982A
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Abstract
The invention discloses a method for manufacturing a fruit packaging material which is insect-proof and can prevent water seepage, promote fruit growth, improve health of fruit nutrition and is environmentally-friendly and the fruit packaging material prepared by using the method. The method comprises the following steps: uniformly mixing and stirring 10-29wt% of yellow soil, 10-39wt% of edible corn starch, 1-10wt% of illite and 50-69wt% of water, wherein the total weight percent is 100%; heating and boiling for 10-20 minutes at the temperature of 100-120 DEG C to get a yellow soil mixed solution; and applying a coating device to coat 10-20g of the yellow soil mixed solution per square meter on one side of raw paper and coat waterproof glue on the other side, and drying for getting the fruit packaging material. A bag manufactured by using the fruit packaging material has the effects of protecting fruits, preventing pests and birds from harming the fruits, promoting the fruit growth and improving the fruit quality. By using a packaging box manufactured by the fruit packaging material for storing the fruits, the shelf life can be prolonged, the water volatilization can be prevented, and the sweetness can be maintained.
Description
Technical field
The present invention relates to a kind of fruit packaging material and preparation method thereof, be specifically related to a kind of fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes and preparation method thereof that utilize.
Background technology
Fruit contain abundant mineral matter, vitamin, must amino acid and multiple organic acid and dietary fiber, the growth of human body and the health of keeping body are had important nutritive value.Improving constantly of people's living standard thereupon, the fruit of fresh, no disease and pest, no residual hazard more and more is subjected to consumer's favor.But promptly use the pesticide of the agricultural chemicals of national permissions to use such as Rogor, metrifonate, DDVP, still residual certain toxin on the fruits and vegetables of results as fruits and vegetables.
The fruit bag technology of rising in recent years has solved the problems referred to above to a certain extent.But also come with some shortcomings, wherein Zui Da problem is to solve " aqueous vapor " contradiction, and promptly outer rainwater and the agricultural chemicals of bag can not enter in the bag, and physiological water and the condensed water of water-in-bag fruit must be got rid of outside the bag, otherwise the temperature and humidity difference is too high in the bag, influences the quality of fruit.At present, existing fruit bag is divided into two kinds of materials, one, paper material, the fruit bag good permeability that this material is made, temperature and humidity difference in the bag is balance relatively, but it is inner to prevent that rainwater from entering the fruit bag, makes the fruit appearance form a large amount of fruit russeting, influence the growth quality and the outward appearance of fruit, directly cause economic worth to reduce; Two, high molecular film material, the fruit bag water proofing property that this material is made is fine, but gas permeability deficiency, the a large amount of physiological waters and the condensed water that produce during the fruit growing are not easy to evaporate, and in the bag, the ratio of the temperature and humidity that bag is outer is seriously unbalanced, temperature height in the bag, sunscald easily takes place, and the fruit meat that grows out is poor, and taste is not delicious yet.
Therefore search out a kind of not only good permeability, do not seep water, the insect protected bird pest, can also promote fruit growth, improve fruits nutrition and be worth, the material of safety, environmental protection is extremely urgent.
Summary of the invention
An object of the present invention is to provide a kind of making insect protected, water-impervious, can promote fruit growth, improve the fruits nutrition composition, can also prolong the fruit shelf-life, prevent moisture evaporation, keep that the fruit sugariness is very high, healthy, the method for the fruit packaging material of environmental protection and the fruit packaging material that prepare with this method.
The preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes of the present invention may further comprise the steps:
A) by mass fraction 100%, with loess 10～29%, edible corn starch 10～39%, illite 1-10% and water 50～69% mix, after stirring, under 100～120 ℃ of temperature, heating was boiled 10～20 minutes with this mixed liquor, obtained the loess mixed liquor;
B) use apparatus for coating, at every square metre of even coating 10～20g loess mixed liquor of a side of body paper, an other side evenly is coated with marine glue, conventional drying, thus obtain the fruit packaging material.
The preferred preparation by the following method of described marine glue by mass fraction 100%, with wax 0.1～0.3%, edible corn starch 10～40%, surplus are the component 89.9～59.7% of water, mix after 80～100 ℃ temperature, heating was boiled 10～20 minutes, formed marine glue.
Described loess is preferably used the natural red loess of 1200～1500 mesh sizes, quality better.
Described body paper is preferably 80～100g body paper, is suitable for the requirement of fruit packaging material, and 80～100g body paper is meant 80～100g/m
2
Described drying is to carry out drying according to the conventional method of this area, preferably carries out drying at 100～120 ℃.
Another object of the present invention has provided the bagging that fresh-keeping fruit packaging material of far infrared insect protected waterproof that a kind of usefulness utilizes loess to make are made, comprise square bag, side at the openend of bag is connected with leg-of-mutton cover plate, the bottom of sack is folding and form the corrugated bag end by interlayer more than two layers, with the bag surface of cover plate homonymy on be provided with the observation window that a transparent material covers in, on the bag surface of the relative side of transparent windows, be provided with and the corresponding seal of cover plate shape.
Use the fruit packaging material that said method is made, make the fruit bagging of different size size, be placed on the different fruits, as apple, pears, peach, muskmelon, mango, lemon, "Hami" melon, watermelon etc. by automatic packaging machine.Bagging generally can be enclosed within the result and just reach on the fruitlet of fortnight, and the growth of cause and effect reality constantly becomes big, so fruit bagging preferably has Telescopic, preferably fruit bagging is made the structure of corrugated multilayer interlayer for this reason.When fruit growth became big, the interlayer of bagging was also opened thereupon and is become big, can not influence growing of fruit.In order to observe conveniently, on fruit bagging, open an observation panel, seal with transparent plastic then, so that observe the growing state of fruit.
The method of applied science of the present invention is organically added the internal layer of being made by materials such as loess in the wrapper of fruit packaging material, this internal layer can be releasing far infrared, promotes the growth of fruit.Be placed on the fruit with the fruit bagging of routine and compare, after the sack that uses packaging material of the present invention to make was placed on the fruit, fruit can be grown fast, and sugar part content exceeds 20～30%, and water content exceeds 10～15%.It is indeformable that the wax of outer coating makes that sack has, impermeable characteristic, and the water in the bagging can volatilize away, thus well solved the steam problem in the fruit bag technology, can be good at protecting fruit.Therefore the bagging that uses fruit packaging material of the present invention to make has the protection fruit, prevents the injury to fruit such as insect, birds; promote fruit growth; the effect of fruit quality is provided; and the cover fruit is easy; recyclable repeatedly use; because of fruit and the fruit tree branch that entangles, situation about falling on the ground so can prevent the fruit deadweight.Put up stores of fruits with common carton and to compare, use fruit packaging material of the present invention to make packing box and put up stores of fruits, in fresh keeping time, shelf-life, prevent moisture evaporation and keep the effect of aspects such as sugariness will be better than common carton group far away.
Description of drawings
Fig. 1 is the structural representation of fruit bagging solid of the present invention;
Fig. 2 is the structural representation of fruit bagging backsight of the present invention;
Fig. 3 is a fruit bagging user mode schematic diagram of the present invention;
1, square bag, 2, cover plate, 3, the bag end, 4, seal, 5, diaphragm seal, 6, observation window, 7, fruit, 8, the branch of fruit tree.
The specific embodiment
Take the natural red loess of quality better, utilize reducing mechanism to wear into 1200 order sizes, weigh this kind loess 10g, edible corn starch 20g, illite 10g and water 60g mix above-mentioned substance, after stirring, under 100 ℃ of temperature, heating was boiled 20 minutes with this mixed liquor, obtained the loess mixed liquor.With wax 0.1g, edible corn starch 10g and water 89.9g, mix, after stirring, under 100 ℃ of temperature, heating was boiled 20 minutes, formed marine glue.The 100g body paper is sent into coating machine, be placed on both sides with on the good frame of bearing fixing, the last wheel diameter of coating machine is 250mm, wheel diameter is 200mm down, use the lower whorl of coating machine every square metre of loess mixed liquor that evenly is coated with 10g of downside at body paper, use the wheel of going up of coating machine marine glue evenly coated the downside of body paper, again through on the squeezing taken turns make marine glue well attached to body paper on.Through the upper and lower squeezing of taking turns, loess mixed liquor and marine glue are coated on the body paper uniformly, and smooth, smooth, carry out conventional drying then under 100 ℃, thereby obtain the fruit packaging material.These fruit packaging material are used the fruit bagging that automatic packaging machine is made the different size size according to demand.In the present embodiment, use sack such as Fig. 1 that above-mentioned fruit packaging material are made, shown in 2 and 3, this sack comprises square bag 1, side at the openend of bag is connected with leg-of-mutton cover plate 2, the bottom of sack is folding and form the corrugated bag end 3 by two layers of interlayer, with the bag surface of cover plate homonymy on be provided with the observation window 6 that a transparent plastic covers in, can observe the growing state of fruit 7 by this observation window, on the bag surface of the relative side of transparent windows 6, be provided with and the corresponding seal 4 of cover plate shape, in order well to seal cover plate, all respectively there is a diaphragm seal 5 the seal both sides.This sack is to use like this, fruit is loaded in the sack, cover plate is walked around the branch 8 of fruit tree, pass through double faced adhesive tape, make the seal bonding of cover plate and bag, then two diaphragm seals are clung on the cover plate, like this by glue, sack just is suspended on the fruit tree branch, can prevent fruit deadweight and situation about falling on the ground.
Bloom two weeks of back apple tree, after the sack of present embodiment being placed on the apple in two weeks after the The above results, compare through the contrast of same treatment with the bagging that use is common, the apple comparison of using the sack cover of present embodiment is shone more early ripe, no worm, and its sugar part content exceeds 20%, and water content exceeds 10%.
Take the natural red loess of quality better, utilize reducing mechanism to wear into 1500 order sizes, weigh this kind loess 29g, edible corn starch 10g, illite 10g and water 51g mix above-mentioned substance, after stirring, under 120 ℃ of temperature, heating was boiled 10 minutes with this mixed liquor, obtained the loess mixed liquor.With wax 0.3g, edible corn starch 40g and water 59.7g, mix, after stirring, under 120 ℃ of temperature, heating was boiled 10 minutes, formed marine glue.The 100g body paper is sent into coating machine, be placed on both sides with on the good frame of bearing fixing, the last wheel diameter of coating machine is 250mm, wheel diameter is 200mm down, use the lower whorl of coating machine every square metre of loess mixed liquor that evenly is coated with 20g of downside at body paper, use the wheel of going up of coating machine marine glue evenly coated the upside of paper, again through on the squeezing taken turns make marine glue well attached to body paper on.Through the upper and lower squeezing of taking turns, loess mixed liquor and marine glue are coated on the body paper uniformly, and smooth, smooth, carry out conventional drying then under 120 ℃, thereby obtain the fruit packaging material.These fruit packaging material are used the fruit bagging that automatic packaging machine is made the different size size according to demand.In the present embodiment, use cover bag constructions and embodiment 1 striking resemblances that above-mentioned fruit packaging material are made, just vary in size, bloom two weeks of back in peach, the sack of present embodiment is placed on the peach in two weeks after the The above results after, compare through the contrast of same treatment with using common bagging, the peach comparison of using the sack cover of present embodiment is shone more early ripe, no worm, and its sugar part content exceeds 25%, and water content exceeds 12%.
Take the natural red loess of quality better, utilize reducing mechanism to wear into 1300 order sizes, weigh this kind loess 10g, edible corn starch 39g, illite 1g and water 50g mix above-mentioned substance, after stirring, under 110 ℃ of temperature, heating was boiled 15 minutes with this mixed liquor, obtained the loess mixed liquor.With wax 0.2g, edible corn starch 30g and water 69.8g, mix, after stirring, under 110 ℃ of temperature, heating was boiled 15 minutes, formed marine glue.The 80g body paper is sent into coating machine, be placed on both sides with on the good frame of bearing fixing, the last wheel diameter of coating machine is 250mm, wheel diameter is 200mm down, use the lower whorl of coating machine every square metre of loess mixed liquor that evenly is coated with 15g of downside at body paper, use the wheel of going up of coating machine marine glue evenly coated the upside of body paper, again through on the squeezing taken turns make marine glue well attached to body paper on.Through the upper and lower squeezing of taking turns, loess mixed liquor and marine glue are coated on the body paper uniformly, and smooth, smooth, carry out conventional drying then under 110 ℃, thereby obtain the fruit packaging material.These fruit packaging material are used the fruit bagging that automatic packaging machine is made the different size size according to demand.In the present embodiment, use cover bag constructions and embodiment 1 striking resemblances that above-mentioned fruit packaging material are made, just vary in size, bloom two weeks of back at "Hami" melon, the sack of present embodiment is placed on the "Hami" melon in two weeks after the The above results after, compare through the contrast of same treatment with using common bagging, the "Hami" melon comparison of using the sack cover of present embodiment is shone more early ripe, no worm, and its sugar part content exceeds 30%, and water content exceeds 15%.
Take the natural red loess of quality better, utilize reducing mechanism to wear into 1400 order sizes, weigh this kind loess 15g, edible corn starch 25g, illite 5g and water 55g mix above-mentioned substance, after stirring, under 115 ℃ of temperature, heating was boiled 18 minutes with this mixed liquor, obtained the loess mixed liquor.With wax 0.15g, edible corn starch 20g and water 79.85g, mix, after stirring, under 115 ℃ of temperature, heating was boiled 18 minutes, formed marine glue.The 90g body paper is sent into coating machine, be placed on both sides with on the good frame of bearing fixing, the last wheel diameter of coating machine is 250mm, wheel diameter is 200mm down, use the lower whorl of coating machine every square metre of loess mixed liquor that evenly is coated with 13g of downside at body paper, use the wheel of going up of coating machine marine glue evenly coated the upside of body paper, again through on the squeezing taken turns make marine glue well attached to body paper on.Through the upper and lower squeezing of taking turns, loess mixed liquor and marine glue are coated on the body paper uniformly, and smooth, smooth, carry out conventional drying then under 100 ℃, thereby obtain the fruit packaging material.These fruit packaging material are used the fruit bagging that automatic packaging machine is made the different size size according to demand.In the present embodiment, use cover bag constructions and embodiment 1 striking resemblances that above-mentioned fruit packaging material are made, just vary in size, bloom two weeks of back at muskmelon, the sack of present embodiment is placed on the muskmelon in two weeks after the The above results after, compare through the contrast of same treatment with using common bagging, the muskmelon comparison of using the sack cover of present embodiment is shone more early ripe, no worm, and its sugar part content exceeds 28%, and water content exceeds 13%.
Take the natural red loess of quality better, utilize reducing mechanism to wear into 1300 order sizes, weigh this kind loess 12g, edible corn starch 16g, illite 3g and water 69g mix above-mentioned substance, after stirring, under 105 ℃ of temperature, heating was boiled 12 minutes with this mixed liquor, obtained the loess mixed liquor.With wax 0.25g, edible corn starch 25g and water 74.75g, mix, after stirring, under 115 ℃ of temperature, heating was boiled 13 minutes, formed marine glue.The 100g body paper is sent into coating machine, be placed on both sides with on the good frame of bearing fixing, the last wheel diameter of coating machine is 250mm, wheel diameter is 200mm down, use the lower whorl of coating machine every square metre of loess mixed liquor that evenly is coated with 18g of downside at body paper, use the wheel of going up of coating machine marine glue evenly coated the upside of body paper, again through on the squeezing taken turns make marine glue well attached to body paper on.Through the upper and lower squeezing of taking turns, loess mixed liquor and marine glue are coated on the body paper uniformly, and smooth, smooth, carry out conventional drying then under 100 ℃, thereby obtain the fruit packaging material.These fruit packaging material are used the fruit bagging that automatic packaging machine is made the different size size according to demand.In the present embodiment, use cover bag constructions and embodiment 1 striking resemblances that above-mentioned fruit packaging material are made, just vary in size, bloom two weeks of back in lemon, the sack of present embodiment is placed on the lemon in two weeks after the The above results after, compare through the contrast of same treatment with using common bagging, the lemon comparison of using the sack cover of present embodiment is shone more early ripe, no worm, and its sugar part content exceeds 20%, and water content exceeds 10%.
The test of splendid attire fruit:
1, on April 22nd, 2008, distinguish splendid attire random choose a certain number of apple, watermelon, banana, tomato, cucumber, mushroom, cabbage, mango and bergamot pear as processed group with the packing box that fruit packaging material of the present invention are made, organize in contrast with apple, watermelon, banana, tomato, cucumber, mushroom, cabbage, mango and bergamot pear the processed group same number with common carton is the splendid attire random choose respectively.Place under the indoor natural conditions and handle.Every day weigh, the fine or not degree of checking the fruit of control group and test group.Through observing after a while, its result is as follows:
Table 1: the apple splendid attire is table as a result
| Initial situation | The situation on May 8 | ||
| Experimental group | 12 of intact apples, gross mass 5.56 | Rot | 1 |
| Control group | 12 of intact apples, gross mass 5.08 | Rot | 2 |
Table 2: the watermelon splendid attire is table as a result
| Initial situation | The situation on May 8 | |
| |
2 of intact watermelons, gross mass 6.25kg | Cut and taste, also keep certain sweet |
| Control group | ||
| 2 of intact watermelons, gross mass 5.79kg | Cut and taste, spoiled |
Table 3: the banana splendid attire is table as a result
| Initial situation | The situation on May 8 | |
| Experimental group | 20 in intact banana, gross mass 4.87kg | Taste, also keep certain sweet taste |
| Control group | 20 in intact banana, gross mass 4.53kg | Taste, spoiled |
Table 4: the tomato splendid attire is table as a result
| Initial situation | The situation on May 3 | |
| Experimental group | 15 in intact tomato, gross mass 2.55 |
1 tomato putresces |
| Control group | 15 in intact tomato, gross mass 2.39 |
5 tomatoes putresce |
Table 5: the cucumber splendid attire is table as a result
| Initial situation | The situation on April 30 | |
| |
8 of intact cucumber, gross mass 2.67kg | Weight reduces 3.26% |
| |
8 of intact cucumber, gross mass 2.10kg | Weight reduces 3.67% |
Table 6: the mushroom splendid attire is table as a result
| Initial situation | The situation on April 28 | The situation on April 30 |
| Experimental group | 26 of intact mushrooms, gross mass 1.50kg | A part putresces | Weight reduces 13.3% |
| Control group | 26 of intact mushrooms, gross mass 1.20kg | Major part putresces | Weight reduces 15.8% |
Table 7: the cabbage splendid attire is table as a result
| Initial situation | The situation on April 30 | |
| |
2 of intact cabbages, gross mass 1.98kg | Weight reduces 3.5% |
| |
2 of intact cabbages, gross mass 1.69kg | Weight reduces 4.7% |
Table 8: the mango splendid attire is table as a result
| Initial situation | The situation on April 30 | |
| Experimental group | 12 of intact mango, gross mass | Weight reduces 3.3%, has 1 to putresce |
| 2.97kg | ||
| Control group | 12 of intact mango, gross mass 2.63kg | Weight reduces 3.7%, has 2 to putresce |
Table 9: the bergamot pear splendid attire is table as a result
| Initial situation | The situation on April 30 | |
| Experimental group | 14 of intact bergamot pears, gross mass 2.25kg | Do not have and rot |
| Control group | 14 of intact bergamot pears, gross mass 2.11kg | Four putresce |
By above-mentioned test as can be seen, after using fruit packaging material of the present invention and making packing box, splendid attire fruit is compared with control group, and its fresh keeping time prolongs, and the shelf-life also prolongs, and can delay the volatilization of moisture, keeps the sugariness of fruit.
Claims (7)
1. a preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes is characterized in that, may further comprise the steps:
A) by mass fraction 100%, with loess 10～29%, edible corn starch 10～39%, illite 1-10% and water 50～69% mix, after stirring, under 100～120 ℃ of temperature, heating was boiled 10～20 minutes with this mixed liquor, obtained the loess mixed liquor;
B) use apparatus for coating, at every square metre of even coating 10～20g loess mixed liquor of a side of body paper, an other side evenly is coated with marine glue, conventional drying, thus obtain the fruit packaging material.
2. the preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes according to claim 1, it is characterized in that, described marine glue prepares by the following method, by mass fraction 100%, with wax 0.1～0.3%, edible corn starch 10～40%, surplus is the component 89.9～59.9% of water, mix after 80～100 ℃ temperature heats and boiled 10～20 minutes, and form marine glue.
3. the preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes according to claim 1 and 2 is characterized in that described loess is the natural red loess of 1200～1500 mesh sizes, quality better.
4. the preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes according to claim 1 and 2 is characterized in that described body paper is 80～100g body paper.
5. the preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes according to claim 1 and 2 is characterized in that described drying is to carry out drying under 100～120 ℃ of temperature.
6. far infrared insect protected waterproof fruit packaging material that the preparation method of utilizing the fresh-keeping fruit packaging material of far infrared insect protected waterproof that loess makes according to claim 1 is made.
7. bagging that utilizes the fresh-keeping fruit packaging material of the described far infrared insect protected of claim 6 waterproof to make, comprise square bag, it is characterized in that, side at the openend of bag is connected with leg-of-mutton cover plate, the bottom of sack is folding and form the corrugated bag end by interlayer more than two layers, with the bag surface of cover plate homonymy on be provided with the observation window that a transparent material covers in, on the bag surface of the relative side of transparent windows, be provided with and the corresponding seal of cover plate shape.
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| CN201010145373XA CN102212982A (en) | 2010-04-09 | 2010-04-09 | Far infrared insect-proof and waterproof refreshing fruit packaging material produced by utilizing yellow soil and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103802370A (en) * | 2012-11-07 | 2014-05-21 | 叶均 | Corrugated carton prepared using loess |
| CN107409869A (en) * | 2017-05-16 | 2017-12-01 | 李王贻 | A kind of fig insect prevention patch and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1105081A (en) * | 1994-06-10 | 1995-07-12 | 许玲 | Grape fresh-keeping paper |
| CN1185303A (en) * | 1996-12-14 | 1998-06-24 | 中国科学院新疆生物土壤沙漠研究所 | HIgh-effective proservative paper for grapes |
| CN1605242A (en) * | 2004-11-17 | 2005-04-13 | 徐世慧 | Fruit bag with metal wire capable of being transversely bound |
| CN101058959A (en) * | 2006-04-18 | 2007-10-24 | 韩昌制纸株式会社 | The manila paper and production method of colorfule paper board using environment-friendly material |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1105081A (en) * | 1994-06-10 | 1995-07-12 | 许玲 | Grape fresh-keeping paper |
| CN1185303A (en) * | 1996-12-14 | 1998-06-24 | 中国科学院新疆生物土壤沙漠研究所 | HIgh-effective proservative paper for grapes |
| CN1605242A (en) * | 2004-11-17 | 2005-04-13 | 徐世慧 | Fruit bag with metal wire capable of being transversely bound |
| CN101058959A (en) * | 2006-04-18 | 2007-10-24 | 韩昌制纸株式会社 | The manila paper and production method of colorfule paper board using environment-friendly material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103802370A (en) * | 2012-11-07 | 2014-05-21 | 叶均 | Corrugated carton prepared using loess |
| CN107409869A (en) * | 2017-05-16 | 2017-12-01 | 李王贻 | A kind of fig insect prevention patch and preparation method thereof |
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Application publication date: 20111012 |