CN1333309A - Sealed package composition and making method and use thereof - Google Patents
Sealed package composition and making method and use thereof Download PDFInfo
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- CN1333309A CN1333309A CN 01114726 CN01114726A CN1333309A CN 1333309 A CN1333309 A CN 1333309A CN 01114726 CN01114726 CN 01114726 CN 01114726 A CN01114726 A CN 01114726A CN 1333309 A CN1333309 A CN 1333309A
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Abstract
The present invention relates to a sealed package composite, its production method and application, and is characterized by that said package composite contains the following materials: (wt%) wax 45-90%, ethylene-vinyl acetate copolymer (EVA) 0-10%, polyolefine 2-25%, viscosity increaser 3-10%, plasticizer 3-20% and antioxidant 0.1-1%. The above-mentioned raw materials are proportioned, mixed and molten in the temp. range of 120-180 deg.C, and made into uniform transparent liquor, then evacuated and filtered, placed into forming tank to form the required shape, cooled so as to obtain the invented product. Said composite can be used on the sealing automatic package production line of sweets of gum candy, chewing sweets and throat-moistening sweets, etc. in the range of 90-110 deg.C.
Description
The present invention relates to a kind of sealed package composition and manufacture method thereof and purposes.The tackiness agent that this sealed package composition forms mainly is applicable on the moistureproof automatic packaging line of junior units such as chewing gum, throat smoothing candy, bubble gum.
Chewing gum, bubble gum and some throat smoothing candy all contain artificial sweetner and fillers such as seasonings or edible acid and CaCO3, these components are to moisture sensitive, if in storage, transportation, make moist, can cause beyond thought effect, such as losing sweet taste or acid and filler such as CaCO3 reaction and causing seasonings forfeiture seasoning effect: same, these components in the exsiccant environment, easily dry out and become fragile, hardening, cause mouthfeel poor.So sealing and protection against the tide are very important, in order to solve sealing problem such as make moist, U.S. Pat 4,384,004 makes capsule to chewing gum, its shortcoming is that each component of chewing gum can not fully combine, and U.S. Pat 4,656,039th is made laminate to chewing gum, promptly component centre layer to water sensitive, water insensitive component is placed on skin, and this way is complicated and make the combination effectively of each component, and the effect of generation is not obvious.Sugars such as present chewing gum, bubble gum, throat smoothing candy prolong method and the moisture preventive measure of tank bracket life-span and shelf-time and mainly still the necessary component of these carbohydrates are blended in a slice (piece) sugar effectively; carrying out junior unit with special wrapping paper then packs; the wrapping paper of this independently junior unit is wrapped up in steamed bun stuffed with sugar wherein; the joint of paper and paper needs a kind of material to come bonding and sealing; could the sugar in the paper be shielded like this; prevent to dry out, moistureproof dustproof, lucifuge is Protected from Heat.U.S. Pat 6,010,724 what tell about is a kind of wrapping paper of chewing gum, this wrapping paper has three coating adhesives, this tackiness agent is a kind of in acrylic latex, vinylformic acid, natural rubber, synthetic adhesive and the latex rubbers, and this class tackiness agent is time-consuming and expense is higher, and storage period is not oversize, and the easily sticking dust of this class tackiness agent influences packaging external appearance.The wrapping paper of carbohydrates such as present chewing gum, bubble gum generally refuels with Microcrystalline Wax or paraffin and seals and bonding, and U.S. Pat 5,116,686 usefulness oil and wax is as sealing agent and caking agent, and the construction that is used for the tunnel and cement etc. mix, and concur; If it is pure with carbohydrate wrapping papers such as oil and the next bonding chewing gum of wax, bubble gum, effect is not very desirable, because Microcrystalline Wax, paraffin, oil are because they self molecular weight is low, fusing point is not high, force of cohesion is little, when being in the damp and hot environment in south, the joint of wrapping paper can automatically spring open, thereby the quality of influence sugar: simultaneously, be exposed at paper outer wax and oil and can be stained with dust, pollute packaging external appearance.
The objective of the invention is to overcome the deficiency of above-mentioned patent, a kind of sealed package composition and manufacture method thereof and purposes are provided.
Purpose of the present invention can reach by taking following measure: a kind of sealed package composition, its characteristics are: be made up of following material, content is by weight percentage: wax 45-90%, ethylene-vinyl acetate copolymer (EVA) 0-10%, polyolefine 2-25%, tackifier 3-10%, softening agent 3-20%, oxidation inhibitor 0.1-1%.
Foregoing a kind of sealed package composition, its characteristics also are:
Described wax is selected from beeswax, spermaceti, paraffin wax fully refined, used for packing foods paraffin or synthetic wax, and the fusing point of wax is at 54 ℃-110 ℃.
The vinyl acetate that contains 19-40% in the ethylene-vinyl acetate copolymer (EVA) by weight.
The melting index of ethylene-vinyl acetate copolymer (EVA) is 30-250g/10min.
Polyolefinic molecular-weight average is 1000-50000, and carbonatoms is 2-5.
Tackifier are selected from aliphatic hydrocarbon resin, hydrogenated fat hydrocarbon resin, hydrogenation firpene and highly hydrogenated rosin.
The softening temperature of tackifying resin is 80 ℃-115 ℃.
Softening agent is the oils of food grade, mainly is selected from food-level white oil, oleic acid (SILVER REAGENT), cochin oil, refining soya-bean oil, refining peanut oil.
The manufacture method of foregoing a kind of sealed package composition, be characterized in: measure raw material by weight percentage, under the temperature between 120-180 ℃, adding raw material and mixed melting become the liquid of homogeneous transparent, after vacuumizing filtration, put into and be shaped jar, form desired shape after, cooling becomes product.
The purposes of foregoing a kind of sealing compositions is characterized in: said composition is used for the sealing automatic packaging production line of sugars such as chewing gum, bubble gum, throat smoothing candy in 90 ℃-110 ℃ scope.
Compared with prior art, the present invention has following outstanding advantage:
1. because the present invention uses the polyolefine of good sealing effect, therefore composition in-20 ℃-45 ℃ temperature range is that the carbohydrate packing material of matrix has the better seal adhesive effect to various paper substrates or with paper, especially is fit to the packing of the independent junior unit on the automatic packaging production line of carbohydrates such as chewing gum, bubble gum.
2. owing to use an amount of softening agent, therefore the ductility and the plasticity of composition improve, when bonding junior unit overwrap, sprawled and come, all be covered with sealed package composition thereby whole weak point is sealed and grow to seal, not only bonding firm, and sealing effectiveness might as well, and the use of low-molecular-weight polyolefine such as polyisobutene and softening agent, increased the winter resistance of composition, in-20 ℃ environment, can keep not opening.
3. owing to use EVA resin and paraffin to cooperate use, the composition of Xing Chenging has bonding strength preferably to the wrapping paper that the surface is coated with polyester film or OPP film like this, and this bonding strength can guarantee that product is unlikely opening in the packed and transported process, simultaneously, polyolefine and EVA and paraffin blending with low softening point, therefore overcome as described above the shortcomings that prior art combinations viscosity is big, softening temperature is high such as United States Patent (USP), both economized in raw materials, saved the energy again.
4. cooperate with paraffin with tackifying resin, can accelerate curing speed, be used on the automatic packaging production line of carbohydrate, quick solidifying can be avoided the generation of " extension wax " phenomenon.So-called " extension wax " partly is bonded on the guide deflection sheave during by guide deflection sheave after being meant that the wax in the wax pond is applied on the wrapping paper.The use of tackifier has also improved the fusing point of composition, makes composition be unlikely opening in damp and hot weather, and tackifier can help composition to soak into polyester or OPP film or aluminium foil, makes bonding more firm.
5. the composition among the present invention is applicable on the automatic packaging production line of the various carbohydrates of packing with paper or Composite Paper such as chewing gum, bubble gum and throat smoothing candy, is used for fast sealing and bonding.The tank bracket life-span with the bonding carbohydrate junior unit of sealed package composition of the present invention is long, period of storage is long, resistance to air loss good, and sugar neither can make moist and be bonded on the wrapping paper, also can not dry out in dry environment and becomes dry crisp.
Describe the present invention below in conjunction with embodiment:
Table 1 is that the material of embodiments of the invention 1～5 is formed, and the percentage composition of kind of material.
The proportioning raw materials of table 1 composition
The raw material that uses among the embodiment 1-5 is respectively as known from Table 1:
(1) component A
A1:60 full refining petroleum wax, 60 ℃ of fusing points are produced by CNPC's blue continent oil-refining chemical head factory.
A2: beeswax, produce or provide by chemical industry station, Tianjin.
A3:C80, f-t synthetic wax, 80 ℃ of softening temperatures, chemical industry company limited produces by the husky rope Pacific Ocean, South Africa.
(2) B component
B1: polyisobutene, molecular-weight average are 9200, produces by Jilin Chemical Industry Company rubber institute demonstration plant,
B2: Atactic Polypropelene, its softening temperature are 108 ℃, are produced by West Germany.
(3) component C
C1: food-level white oil, produce by the Fushun petroleum chemical plant.
C2: oleic acid, produce by Shenyang reagent two factories.
(4) component D
D1:PRF2-80 is the C5 hydrogenated petroleum resin, and softening temperature is 70 ℃-80 ℃, is produced by Ethylene Plant in Qilu Lu Hua chemical plant.
D2: height perhydrogenated rosin glyceride 85 types, softening temperature is 85 ℃, is produced by U.S. He Ke man of great strength company.
(5) component E
E1:BHT, antioxidant 264 is produced by Beijing auxiliary agent head factory.
E2:BHA, oxidation inhibitor is produced by U.S. EASTMAN company.
(6) component F
F1:EVA 40W is the multipolymer of ethylene-vinyl acetate, and wherein the content of vinyl acetate is 40% (weight), and melting index is 50g/min, is produced by Mitsui Du Pont.
F2:EVA28/150 is the multipolymer of ethylene-vinyl acetate, and wherein the content of vinyl acetate is 28% (weight), and melting index is 150g/min, is produced by Beijing Organic Chemical Plant.
Table 2 is part of detecting results of the embodiment of the invention 1～5.
Table 2 test-results
| Embodiment | ????1 | ????2 | ????3 | ????4 | ????5 | ????6 |
| Melt drop temperature, ℃ | ????60 | ??63.5 | ????56 | ????58 | ??64.5 | ????60 |
| Melt viscosity (99 ℃), CPS | ??63.5 | ??57.6 | ????50 | ??48.5 | ??40.1 | ??13.7 |
| Penetration degree (25 ℃), mm/10? | ????14 | ????13 | ????15 | ????18 | ????17 | ????18 |
| Color? | ?＜0.5 | ?＜0.5 | ?＜0.5?? | ?＜0.5 | ???＜1 | ?＜0.5 |
| " sudden and violent mouthful " experiment | Imperforation | Imperforation | Imperforation | Imperforation | Imperforation | Opening is arranged |
As can be seen from Table 2: sealed package composition fusing point of the present invention is similar with packing wax commonly used, is convenient to fusing like this, need not change the process conditions that packed production line originally; The melt viscosity of sealed package composition of the present invention makes more like this that bonding firmly experiment does not have opening to show as " sudden and violent mouthful " than packing wax commonly used, and packing wax commonly used has opening to occur sometimes.
Table 3 is gas-tightness test results of the embodiment of the invention 1～5.
Table 3 gas-tightness test result
As known from Table 1:
The wax that is used for the embodiment of the invention 1～5 selects white natural wax, paraffin and synthetic wax, and natural wax comprises beeswax, shellac wax, spermaceti, carnauba wax, gama wax, ouricury wax etc., the preferred beeswax of natural wax, spermaceti; Melting point of paraffin wax is 50-68 ℃, and preferred paraffin is full training of vital essence system paraffin and used for packing foods paraffin No. 54, No. 56, No. 58 and No. 60; Synthetic wax comprises macromolecule wax, fischer-tropsch wax H1 and C80 (derive from husky Suo Huagong Pacific Ocean company limited) and the Poly Propylene Wax of fusing point between 97-110 ℃, these waxes can a kind of independent use, also can two to three kinds of also use, but the total amount of wax should be 45-90% (weight), is preferably 45-75% (weight).
The EVA multipolymer that is used for the embodiment of the invention 1～5 contains vinyl acetate 19-40%, is preferably 33-40%; The melting index of EVA is 30-250g/10min, is preferably 50-150g/10min.Alternative EVA for Chinese Shanghai chemical research institute produce 28/250, Beijing Organic Chemical Plant produce 28/150, the EVA-800 of Hyundai, the KC-10 of SUMITOMO CHEMICAL, 420,220 and the 40W etc. of Mitsui Du Pont.The present composition can be selected wherein a kind of EVA for use, also can use with by several EVA, notes when using with can being lower than 19% or be higher than 40% with preceding EVA content, should be in aforementioned range but mix the overall EVA content in back; Melting index is also like this.The use range of these multipolymers in the present composition is about 0-10% (weight), is preferably 2-5% (weight).
The polyolefine that is used for the embodiment of the invention 1～5, its molecular-weight average are 3000-10000, and alternative polyolefine has middle molecular weight polyisoprene iso-butylene, the about 3000-4000 of molecular weight; High molecular weight polyisobutylene, molecular weight are 9000-10000; Atactic Polypropelene, the about 115-130 of softening temperature etc.These polyolefine amount ranges in the present invention is 2-20% (weight), is preferably 8-16% (weight).
The softening agent that is used for the embodiment of the invention 1～5 is preferably the refining oils of food grade, and for example food-level white oil is refined mineral oil, cochin oil, refining soya-bean oil, oleic acid (SILVER REAGENT) and refining peanut wet goods (generally on sale on these oils markets).The amount ranges of softening agent in the present composition is 3-10% (weight), is preferably 3-5% (weight).
The tackifier that are used for the embodiment of the invention 1～5 are selected from aliphatic hydrocarbon resin, hydrogenated fat family tree fat, hydrogenation pinane (terpene) alkene and highly hydrogenated rosin, its ring and ball softening point is about 80-115 ℃, these tackifying resins comprise: (derive from Idemitsu Petrochemical Co., Ltd) they are petroleum resin of hydrogenation for C5 petroleum resin (deriving from Ethylene Plant in Qilu Lu Hua chemical plant), P-100 and P-115; They are petroleum resin of hydrogenation for S-100A and SU-100 (deriving from Hyundai); KF-398 (deriving from GuangZhou, China), they are hydriding terpenes; Height perhydrogenated rosin glyceryl ester 85 types (85 ℃ of softening temperatures), (deriving from U.S. He Ke man of great strength), and a kind of staybelite of Hunan China product.The use range of these tackifier in the present composition is 3-20% (weight), is preferably 5-10% (weight).
Composition in the embodiment of the invention 1～5 can be by using the regulation of the consumption of oxidation inhibitor to add oxidation inhibitor about food in the CNS, as: 2,6-di-tert-butyl-4-methy phenol (BHT), butylhydroxy anisole (BHA), its consumption is generally 0.1-1%.
The performance index of sealed package composition of the present invention are: fusing point is about 55-65 ℃; Melt viscosity is about 40-80CPS for 99 ℃; The packaging operation temperature is 85-120 ℃; The end-use temperature scope is-20 ℃-45 ℃; About 12-18mm/10 during 25 ℃ of penetration degrees; There is not mechanical impurity; There is not irritating smell.
Preparation of compositions is under the temperature between 120-180 ℃, adds the liquid that raw material and mixed melting become homogeneous transparent, after vacuumizing filtration, puts into and is shaped jar, become out the shape of being wanted after, cooling becomes product.By the product that the present composition forms, the color off-white, transparent and glossy, do not have mechanical impurity, have no irritating odor.Its hygienic standard satisfies among the FDA the regulation of food product pack level paraffin and used for packing foods polythene material, also meets in the CNS regulation to food product pack level paraffin and used for packing foods polythene material.The product that is formed by the present composition is specially adapted on the independent junior unit automatic packaging production line of carbohydrates such as chewing gum, bubble gum, throat smoothing candy, the finished product of packing out has that resistance to air loss is good, moisture-proof hot good, low temperature resistant, be not covered with dust, advantage such as the tank bracket life-span is long, storage period is long.
The data of table 2, table 3 are to adopt following common detection method to obtain, and belong to non-limiting example.
1. melt viscosity
The mensuration of melt viscosity is with Bu Luoke Field rotational viscosimeter, model: the DV-II type, use No. 31 rotor, and rotating speed is 60.
2. fusing point
The temperature of lag phase appears for the first time in the paraffin sample that cooling has been melted under defined terms on cooling curve, be melting point of paraffin wax.In paraffin sample process of cooling, temperature of per 15 seconds records, when for the first time occur five total continuously poor when being no more than 0.1, be lag phase for the first time, the mean value of five consecutive numbers is the fusing point of institute's test specimens.
3. penetration degree
The fusing sample is heated to the above about 20 ℃ of impouring containers of its condensation point, under controlled conditions, and with its air cooling.Then, sample is adjusted to test temperature in bath, under 100 gram load, inserts 5 seconds of sample with the standard pin of penetrometer.The numerical value that shows on the penetrometer is institute's measured value.
4. color
Sample is injected container, and the coloured glass disk of arranging from the 0.5-8.0 value with a standard light source compares, with the look that equates number as the look of this sample number.If the sample color can not find between the color of exact match, then report higher in two a colors color.
5. resistance to air loss
On the sealed packet wiring, randomly draw packaged sugar (at least 4), in the middle of the sugar surface, prick a hole with punch tool, the clamper that does not have an end graduated cylinder with the lower end band is clamped sugar then, foraminous simultaneously is fixed on the clamper and makes it to seal up, and contacts with graduated cylinder below the sugar of atresia, and graduated cylinder and sugar are immersed in the water, if emit bubble, showing has gas leakage, and water enters graduated cylinder and picks up counting, and the volume that entered the water of graduated cylinder in 1 minute surpasses 10 milliliters then for defective.Bubble-tight quality is weighed with disqualification rate, and the calculating of disqualification rate is divided by test sugar sum with defective sugar number.
6. " sudden and violent mouthful " experiment
Packaged sugar is put into 40 ℃ continuously baking 2 hours of thermostat container, see and longly seal and lack and whether seal opening that this experiment is used for weighing the performance of product moisture-proof thermal environment.
The preparation of compositions of embodiment 1,2,3,4,5 among the present invention is that the raw material that weighs up weight is put into blend tank, is warming up to 140 ℃, raw material is all melted and stirs, and through vacuum filtration, is configured as the shape of being wanted.Embodiment 6 is a present chewing gum factory packing wax comparatively commonly used, and embodiment 7 is the moistureproof methods of the used layering of present chewing gum.
Table 3 has been listed " resistance to air loss " experimental result, and by the air leakage of 4 loaf sugars of randomly drawing and resistance to air loss disqualification rate as can be seen: the resistance to air loss of sealed package composition of the present invention is better, and it is few and the resistance to air loss disqualification rate is low to show as its air leakage; And packing wax commonly used is because its Polyolefin and adhesiveproperties that does not contain tool stopping property ethylene-vinyl acetate copolymer preferably, and the sugar air leakage that causes its sealed packet to take on is big, the resistance to air loss disqualification rate is higher and " sudden and violent mouthful " experiment is general; Simultaneously, the resistance to air loss of layering sugar neither be optimal, though its air leakage less than packing wax commonly used, " resistance to air loss " disqualification rate is slightly larger than packing wax.
It can also be seen that use temperature a wider range of sealed package composition of the present invention by table 3, even temperature raises 20 ℃, its resistance to air loss disqualification rate of the sugar of packing out is very low.And the packing wax of prior art is after service temperature raises, and its resistance to air loss descends, and shows as " resistance to air loss " disqualification rate and raises more.
Claims (10)
1. sealed package composition is characterized in that: form by following material, content by weight percentage: wax 45-90%, ethylene-vinyl acetate copolymer (EVA) 0-10%, polyolefine 2-25%, tackifier 3-10%, softening agent 3-20%, oxidation inhibitor 0.1-1%.
2. a kind of sealed package composition as claimed in claim 1 is characterized in that: described wax is selected from beeswax, spermaceti, paraffin wax fully refined, used for packing foods paraffin or synthetic wax, and the fusing point of wax is at 54 ℃-110 ℃.
3. a kind of sealed package composition as claimed in claim 1 is characterized in that: the vinyl acetate that contains 19-40% in the ethylene-vinyl acetate copolymer (EVA) by weight.
4. a kind of sealed package composition as claimed in claim 1 is characterized in that: the melting index of ethylene-vinyl acetate copolymer (EVA) is 30-250g/10min.
5. a kind of sealed package composition as claimed in claim 1 is characterized in that: polyolefinic molecular-weight average is 1000-50000, and carbonatoms is 2-5.
6. a kind of sealed package composition as claimed in claim 1 is characterized in that: tackifier are selected from aliphatic hydrocarbon resin, hydrogenated fat hydrocarbon resin, hydrogenation firpene and highly hydrogenated rosin etc.
7. a kind of sealed package composition as claimed in claim 1 is characterized in that: the softening temperature of tackifying resin is 80 ℃-115 ℃.
8. a kind of sealed package composition as claimed in claim 1 is characterized in that: softening agent is the oils of food grade, mainly is selected from food-level white oil, oleic acid (SILVER REAGENT), cochin oil, refining soya-bean oil, refining peanut oil.
9. the manufacture method of a kind of sealed package composition as claimed in claim 1, it is characterized in that: measure raw material by weight percentage, under the temperature between 120-180 ℃, adding raw material and mixed melting become the liquid of homogeneous transparent, after vacuumizing filtration, put into and be shaped jar, form desired shape after, cooling becomes product.
10. the purposes of a kind of sealing compositions as claimed in claim 1, it is characterized in that: said composition is used for the sealing automatic packaging production line of sugars such as chewing gum, bubble gum, throat smoothing candy in 90 ℃-110 ℃ scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011147261A CN1181138C (en) | 2001-05-23 | 2001-05-23 | Sealed package composition and making method and use thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011147261A CN1181138C (en) | 2001-05-23 | 2001-05-23 | Sealed package composition and making method and use thereof |
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| CN1333309A true CN1333309A (en) | 2002-01-30 |
| CN1181138C CN1181138C (en) | 2004-12-22 |
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| CNB011147261A Expired - Fee Related CN1181138C (en) | 2001-05-23 | 2001-05-23 | Sealed package composition and making method and use thereof |
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| CN102936418A (en) * | 2011-08-16 | 2013-02-20 | 江苏泰尔新材料科技有限公司 | Antiskid wax for surfboards and its preparation method |
| CN103509498A (en) * | 2013-09-18 | 2014-01-15 | 滁州市光威化工有限公司 | Lead and zinc-containing slag and hot melt adhesive composition |
| CN103980849A (en) * | 2014-06-04 | 2014-08-13 | 福州大学 | EVA (ethylene-vinyl acetate) hot-melt adhesive material and preparation method thereof |
| CN104177844A (en) * | 2014-08-22 | 2014-12-03 | 昆明中药厂有限公司 | Traditional Chinese medicine inner package material as well as preparation method and application thereof |
| CN105018026A (en) * | 2015-08-05 | 2015-11-04 | 复旦大学 | Nail-painting binder and preparation method thereof |
| CN107254256A (en) * | 2017-06-28 | 2017-10-17 | 中国航发南方工业有限公司 | Sealing with wax and preparation method thereof for frock working face |
| CN109735118A (en) * | 2019-01-05 | 2019-05-10 | 青岛马基泰商贸有限公司 | A kind of environment protection colour sealing wax and preparation method thereof, application |
| CN110437798A (en) * | 2019-08-07 | 2019-11-12 | 广州市德馨蜡制品有限公司 | It is packed for bonding wax and its preparation method and application |
| CN110699037A (en) * | 2019-10-29 | 2020-01-17 | 厦门鼎宏热熔胶有限公司 | High-strength and temperature-resistant wax-based hot melt adhesive and preparation method thereof |
| CN115354495A (en) * | 2022-09-14 | 2022-11-18 | 中粮工程装备（张家口）有限公司 | Felt filling sealing impregnation medium and preparation and application methods thereof |
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2001
- 2001-05-23 CN CNB011147261A patent/CN1181138C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102936418A (en) * | 2011-08-16 | 2013-02-20 | 江苏泰尔新材料科技有限公司 | Antiskid wax for surfboards and its preparation method |
| CN103509498A (en) * | 2013-09-18 | 2014-01-15 | 滁州市光威化工有限公司 | Lead and zinc-containing slag and hot melt adhesive composition |
| CN103980849A (en) * | 2014-06-04 | 2014-08-13 | 福州大学 | EVA (ethylene-vinyl acetate) hot-melt adhesive material and preparation method thereof |
| CN103980849B (en) * | 2014-06-04 | 2015-12-02 | 福州大学 | A kind of EVA hot-melt adhesive material and preparation method thereof |
| CN104177844A (en) * | 2014-08-22 | 2014-12-03 | 昆明中药厂有限公司 | Traditional Chinese medicine inner package material as well as preparation method and application thereof |
| CN105018026A (en) * | 2015-08-05 | 2015-11-04 | 复旦大学 | Nail-painting binder and preparation method thereof |
| CN107254256A (en) * | 2017-06-28 | 2017-10-17 | 中国航发南方工业有限公司 | Sealing with wax and preparation method thereof for frock working face |
| CN109735118A (en) * | 2019-01-05 | 2019-05-10 | 青岛马基泰商贸有限公司 | A kind of environment protection colour sealing wax and preparation method thereof, application |
| CN109735118B (en) * | 2019-01-05 | 2023-10-24 | 青岛马基泰商贸有限公司 | Environment-friendly color sealing wax and preparation method and application thereof |
| CN110437798A (en) * | 2019-08-07 | 2019-11-12 | 广州市德馨蜡制品有限公司 | It is packed for bonding wax and its preparation method and application |
| CN110699037A (en) * | 2019-10-29 | 2020-01-17 | 厦门鼎宏热熔胶有限公司 | High-strength and temperature-resistant wax-based hot melt adhesive and preparation method thereof |
| CN115354495A (en) * | 2022-09-14 | 2022-11-18 | 中粮工程装备（张家口）有限公司 | Felt filling sealing impregnation medium and preparation and application methods thereof |
| CN115354495B (en) * | 2022-09-14 | 2024-08-09 | 中粮工程装备（张家口）有限公司 | Felt filling sealing impregnating medium and preparation and application methods thereof |
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| Publication number | Publication date |
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| CN1181138C (en) | 2004-12-22 |
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