CN101225286B - Self-sticky cold-seal adhesive and preparation method thereof - Google Patents
Self-sticky cold-seal adhesive and preparation method thereof Download PDFInfo
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- CN101225286B CN101225286B CN2008100184283A CN200810018428A CN101225286B CN 101225286 B CN101225286 B CN 101225286B CN 2008100184283 A CN2008100184283 A CN 2008100184283A CN 200810018428 A CN200810018428 A CN 200810018428A CN 101225286 B CN101225286 B CN 101225286B
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Abstract
The invention relates to a self-bonding cold seal adhesive and the preparation method. The self-bonding cold seal adhesive comprises natural latex, assistant operating fluid and purified water. Calculated according to weight percent, the compound is as follows: the natural latex 41.98 to 59.14%, the assistant operating fluid 7.02 to 7.17%, and the purified water 33.69 to 50.89%; wherein, the assistant operating fluid comprises 35.0 to 50.8% purified water, 7.0 to 11.0% nonionic emulsifier, 33.3 to 51.0% polyethylene glycol, 4.0 to 5.0% rubber antiaging powder, and 0.7 to 0.9% zinc oxide. The preparation method of the self-bonding cold seal adhesive comprises following steps: preparing the assistant operating fluid, then preparing the self-bonding cold seal adhesive. The preparation method of the self-bonding cold seal adhesive has the advantages of simple operation, stable quality of product, innocuity of the self-bonding cold seal adhesive, avoidance of adhesion when the adhesive layer is contacted with other articles, greatly improved packaging speed of woundplast and reduced production cost.
Description
Technical field
The present invention relates to a kind of self-sticky cold-seal adhesive and preparation method thereof.This self-sticky cold-seal adhesive is applicable to the internal packing paper of production internal packing paper, particularly adhesive bandage.
Background technology
China has introduced the production line of adhesive bandage adhesive plaster in 1985, adhesive bandage internal packing paper need limit the production of adhesive bandage product greatly from external import at that time.Though developed the pressure sensitive cold-seal adhesive subsequently, solved the problem of import adhesive bandage internal packing paper, but, the adhesive bandage internal packing paper that uses this pressure sensitive cold-seal adhesive to produce, be easy to generate adhesion phenomenon, can cause final adhesive bandage product rejection when serious, also influence the production rate of streamline.Be head it off, when producing adhesive bandage internal packing paper, another side at the adhesive bandage internal packing paper that applies the pressure sensitive cold-seal adhesive, apply one deck release agent again, like this, not only increased operation sequence and product cost, and the phenomenon that still can stick together sometimes, adhesive bandage quality product and price problem are not resolved yet.
Summary of the invention
First purpose of the present invention is, provides a kind of glue-line to contact adhesion with other article, is applicable to adhesive bandage internal packing paper and nontoxic self-sticky cold-seal adhesive.
The technical scheme that realizes first purpose of the present invention is: a kind of self-sticky cold-seal adhesive, be characterized in by natural emulsion, back work liquid and purify waste water and form, percentage ratio meter by weight, the consumption of each component is: natural emulsion 41.98%～59.14%, back work liquid 7.02%～7.17%, purify waste water 33.69%～50.89%, wherein, back work liquid is by purifying waste water 35.0%～50.8%, nonionic emulsifier 7.0%～11.0%, polyoxyethylene glycol 33.3%～51.0%, rubber is prevented old powder 4.0%～5.0%, zinc oxide 0.7%～0.9% is formed.
Above-mentioned self-sticky cold-seal adhesive, its solids content are 38～45% (weight), and viscosity is 30～33 centipoises.
In the above-mentioned self-sticky cold-seal adhesive, described natural emulsion viscosity is 55～80 centipoises, and its solids content is 50～75% (weight).
In the above-mentioned self-sticky cold-seal adhesive, the nonionic emulsifier of forming described back work liquid is an alkylphenol polyoxyethylene, and the anti-old powder of rubber is a 2-mercaptobenzimidazole, and the molecular-weight average of polyoxyethylene glycol is 400～600.
Second purpose of the present invention be, a kind of method for preparing above-mentioned self-sticky cold-seal adhesive is provided, and be simple to operate, constant product quality.
The technical scheme that realizes second purpose of the present invention is: a kind of method for preparing above-mentioned self-sticky cold-seal adhesive is characterized in that the liquid of preparation back work earlier, refabrication self-sticky cold-seal adhesive;
The concrete steps of preparation back work liquid are as follows:
1. by purifying waste water 35.0%～50.8%, nonionic emulsifier 7.0%～11.0%, polyoxyethylene glycol 33.3%～51.0%, rubber is prevented old powder 4.0%～5.0%, zinc oxide 0.7%～0.9%, take by weighing respectively purify waste water, the anti-old powder of nonionic emulsifier, polyoxyethylene glycol, rubber and zinc oxide, standby;
2. purify waste water from taking by weighing, get wherein 32～38% purify waste water to put into and soak a bucket A, put into the zinc oxide and the anti-old powder of rubber that all take by weighing then, after stirring, leave standstill immersion and made soak solution A at least in 7 days; Purify waste water from taking by weighing, get wherein 25～30% purify waste water to put into and soak a bucket B, put into the polyoxyethylene glycol and the emulsifying agent that all take by weighing then, after stirring, leave standstill immersion and made soak solution B at least in 7 days;
3. purify waste water from taking by weighing, getting wherein 20～22% purifies waste water and puts into mixing tank and start stirrer, under agitation, soak solution A that successively 2. step is made and soak solution B all are added in the mixing tank, and again with remaining purifying waste water of having taken by weighing, residual soak solution A and soak solution B all transfers in the mixing tank in bucket A and the immersion bucket B with soaking, stirred at least 45 minutes then, after the filtration, gained leaches thing and is back work liquid, stores standby;
The concrete steps of preparation self-sticky cold-seal adhesive are as follows:
1. be 41.98%～59.14% by natural emulsion, back work liquid is 7.02%～7.17%, and purifying waste water is 33.69%～50.89%, takes by weighing natural emulsion, back work liquid respectively and purifies waste water, and is standby;
2. purify waste water from taking by weighing, get wherein 50% purify waste water and be placed in the mixing tank and start stirrer, under agitation, add successively the back work liquid taken by weighing, 60% take by weighing natural emulsion, 30% take by weighing and purify waste water and remaining natural emulsion, having taken by weighing to purify waste water with residue more all transfers to natural emulsion residual in the container and back work liquid in the mixing tank, continue then to stir at least 45 minutes, after the filtration, gained leaches thing and is self-sticky cold-seal adhesive of the present invention.
In the above-mentioned method for preparing self-sticky cold-seal adhesive, 2. the step of preparation self-sticky cold-seal adhesive carries out under subzero 5 ℃ to 4 ℃ above freezing.
The above-mentioned method for preparing self-sticky cold-seal adhesive, the solids content of the self-sticky cold-seal adhesive that makes are 38～45% (weight), and viscosity is 30～33 centipoises.
In the above-mentioned method for preparing self-sticky cold-seal adhesive, the nonionic emulsifier that is used to prepare back work liquid is an alkylphenol polyoxyethylene, and the anti-old powder of rubber is a 2-mercaptobenzimidazole, and the molecular-weight average of polyoxyethylene glycol is 400～600.
In the above-mentioned method for preparing self-sticky cold-seal adhesive, the natural emulsion viscosity that is used to prepare self-sticky cold-seal adhesive is 55～80 centipoises, and its solids content is 50～75% (weight).
Technique effect of the present invention: self-sticky cold-seal adhesive of the present invention is the shortcoming that exists according to existing tackiness agent, again appropriate selects each component, its proportioning appropriately arranged in pairs or groups, and the back determines, particularly the natural emulsion with appropriate ratio has replaced synthetic latex, make to bond between the self-sticky cold-seal adhesive glue-line, and with other article adhesions.Therefore, when producing adhesive bandage internal packing paper with self-sticky cold-seal adhesive of the present invention, another side at adhesive bandage internal packing paper need not to apply release agent, contact the phenomenon that sticks together never again with other article, reduced production process, save the time, reduced cost, also guaranteed the quality of adhesive bandage product.Simultaneously, the package speed of adhesive bandage is improved greatly, test shows, the adhesive bandage internal packing paper that uses the pressure sensitive cold-seal adhesive to produce, package speed is 200 adhesive bandages of per minute, and the adhesive bandage internal packing paper that uses self-sticky cold-seal adhesive of the present invention to produce, package speed is 3500 adhesive bandages of per minute, improve production efficiency greatly, more can adapt to requirement high-speed automated, the mechanize streamline; Self-sticky cold-seal adhesive of the present invention carries out local excitation test and abnormal toxicity test through the Changzhou institute for drug control, and the result shows that abnormal toxicity test is up to specification, and is nontoxic, local excitation test (rabbit leg muscle injection) requirement up to specification.Self-sticky cold-seal adhesive preparation method of the present invention, simple to operate, can guarantee the steady quality of the self-sticky cold-seal adhesive produced.
Embodiment
Below in conjunction with embodiment the present invention is further described in detail, but is not limited to this.
Used raw material unless otherwise indicated is commercially available industrial goods among the embodiment.
Self-sticky cold-seal adhesive of the present invention is by natural emulsion, back work liquid and purify waste water and form, percentage ratio meter by weight, and the consumption of each component is:
Natural emulsion 41.98%～59.14%, back work liquid 7.02%～7.17% purifies waste water 33.69%～50.89%;
Wherein, back work liquid is by purifying waste water 35.0%～50.8%, nonionic emulsifier 7.0%～11.0%, and polyoxyethylene glycol 33.3%～51.0%, rubber is prevented old powder 4.0%～5.0%, zinc oxide 0.7%～0.9% is formed.
Embodiment 1 preparation self-sticky cold-seal adhesive
The liquid of preparation back work earlier, the refabrication self-sticky cold-seal adhesive;
The concrete steps of preparation back work liquid are as follows:
1. press table 1 prescription, take by weighing respectively purify waste water, nonionic emulsifier, polyoxyethylene glycol, the anti-old powder of rubber and zinc oxide, standby;
Table 1
| Component | Material name and specification | Consumption (shared %) |
| Purify waste water | Meet purifying waste water of medicinal standard | 70kg(35.08％) |
| Nonionic emulsifier | Polyoxyethylene nonylphenol ether | 20kg(10.03％) |
| Polyoxyethylene glycol | Polyoxyethylene glycol, molecular-weight average 400～600 | 100kg(50.13％) |
| Rubber is prevented old powder | 2-mercaptobenzimidazole | 8kg(4.01％) |
| Zinc oxide | Zinc oxide (medicinal) | 1.5kg(0.75％) |
2. get 25kg purifying waste water and put into and soak a bucket A from taking by weighing, put into the zinc oxide and the anti-old powder of rubber that all take by weighing then, after stirring, leave standstill immersion and made soak solution A at least in 7 days; Get 20 purifying waste water again and put into and soak a bucket B from taking by weighing, put into the polyoxyethylene glycol and the emulsifying agent that all take by weighing then, after stirring, leave standstill immersion and made soak solution B at least in 7 days;
3. get 15 again purifying waste water and put into mixing tank and start stirrer from taking by weighing, under agitation, the soak solution A and the soak solution B that successively 2. step are made all are added in the mixing tank, again with remaining purify waste water (10) that taken by weighing, residual soak solution A and soak solution B all transfers in the mixing tank in bucket A and the immersion bucket B with soaking, and stirs at least 45 minutes then, after the filtration, gained leaches thing and is back work liquid, stores standby;
The concrete steps of preparation self-sticky cold-seal adhesive are as follows:
1. press table 2 prescription, take by weighing respectively purify waste water, natural emulsion and back work liquid, standby;
Table 2
| Component | Material name and specification | Consumption (shared %) |
| Purify waste water | Meet purifying waste water of medicinal standard | 100(35.09％) |
| Component | Material name and specification | Consumption (shared %) |
| Natural emulsion | Natural emulsion, 55～80 centipoises, its solids content is 50～75% (weight) | 165(57.89％) |
| Back work liquid | Self-control | 20(7.02％) |
2. get 50 purifying waste water and be placed in the mixing tank and start stirrer from taking by weighing, under agitation, add back work liquid 20, the natural emulsion 100 taken by weighing successively, purify waste water 30 and remaining natural emulsion 65, purifying waste water with residue 20 all transfers to natural emulsion residual in the container and back work liquid in the mixing tank again, continue then to stir at least 45 minutes, after the filtration, gained leaches thing and is self-sticky cold-seal adhesive of the present invention, its solids content is 38～45% (weight), and viscosity is 30～33 centipoises.The equal controlled temperature of this step operation 2. carries out under subzero 5 ℃ to 4 ℃ above freezing.
Embodiment 2 usefulness self-sticky cold-seal adhesive of the present invention prepares adhesive bandage
Adopt the printing coating process at the self-sticky cold-seal adhesive of the present invention that paper surface coating embodiment 1 makes, make adhesive bandage internal packing paper and cut out standby on request;
On adhesive bandage adhesive plaster production line, the adhesive bandage internal packing folder of cutting out with two-layer process to the adhesive bandage adhesive plaster in the centre, finish internal packing through press seal to adhesive bandage, the actual measurement package speed is 3500 adhesive bandages of per minute, adhesion phenomenon does not appear in wrapping process.Promptly make the adhesive bandage finished product behind the dress box.
In order to compare, prepare adhesive bandage with existing pressure sensitive cold-seal adhesive:
Adopt existing coating process, use the pressure sensitive cold-seal adhesive to make adhesive bandage internal packing paper, cut out standby on request;
On adhesive bandage adhesive plaster production line, the adhesive bandage internal packing folder of cutting out with two-layer process to the adhesive bandage adhesive plaster in the centre, finish internal packing through press seal to adhesive bandage, the actual measurement package speed is 200 adhesive bandages of per minute, has adhesion phenomenon to take place during wrapping process.Promptly make existing adhesive bandage finished product behind the dress box.
This shows that self-sticky cold-seal adhesive of the present invention aspect adhesion inhibiting properties and adhesive bandage package speed, obviously is better than existing pressure sensitive cold-seal adhesive.
The self-sticky cold-seal adhesive of the invention that 3 couples of embodiment 1 of embodiment make carries out local excitation test and abnormal toxicity test
Entrust the Changzhou institute for drug control to carry out local excitation test (rabbit leg muscle injection) with reference to " pharmacological experimental method ", consequently the bone musculus quadriceps in injection portion there is no stimulation phenomenons such as hyperemia, oedema, scleroma, sex change, necrosis, and is up to specification;
Entrust the Changzhou institute for drug control to carry out abnormal toxicity test with reference to " two appendix of Chinese Pharmacopoeia nineteen ninety version ", consequently mouse is all not dead, up to specification in 48 hours.
Prove that thus self-sticky cold-seal adhesive of the present invention is nontoxic.
Self-sticky cold-seal adhesive of the present invention not only is used for the adhesive bandage overwrap, also can be used for plaster production and is expected to further expand to other field.
Claims (5)
1. a method for preparing self-sticky cold-seal adhesive is characterized in that, self-sticky cold-seal adhesive is by natural emulsion, back work liquid and purify waste water and form, percentage ratio meter by weight, and the consumption of each component is:
Natural emulsion 41.98%～59.14%, back work liquid 7.02%～7.17% purifies waste water 33.69%～50.89%;
Wherein, back work liquid is by purifying waste water 35.0%～50.8%, nonionic emulsifier 7.0%～11.0%, and polyoxyethylene glycol 33.3%～51.0%, rubber is prevented old powder 4.0%～5.0%, zinc oxide 0.7%～0.9% is formed;
The liquid of preparation back work earlier, the refabrication self-sticky cold-seal adhesive;
The concrete steps of preparation back work liquid are as follows:
1. by purifying waste water 35.0%～50.8%, nonionic emulsifier 7.0%～11.0%, polyoxyethylene glycol 33.3%～51.0%, rubber is prevented old powder 4.0%～5.0%, zinc oxide 0.7%～0.9%, take by weighing respectively purify waste water, the anti-old powder of nonionic emulsifier, polyoxyethylene glycol, rubber and zinc oxide, standby;
2. purify waste water from taking by weighing, get wherein 32～38% purify waste water to put into and soak a bucket A, put into the zinc oxide and the anti-old powder of rubber that all take by weighing then, after stirring, leave standstill immersion and made soak solution A at least in 7 days; Purify waste water from taking by weighing, get wherein 25～30% purify waste water to put into and soak a bucket B, put into the polyoxyethylene glycol and the nonionic emulsifier that all take by weighing then, after stirring, leave standstill immersion and made soak solution B at least in 7 days;
3. purify waste water from taking by weighing, getting wherein 20～22% purifies waste water and puts into mixing tank and start stirrer, under agitation, soak solution A that successively 2. step is made and soak solution B all are added in the mixing tank, and again with remaining purifying waste water of having taken by weighing, residual soak solution A and soak solution B all transfers in the mixing tank in bucket A and the immersion bucket B with soaking, stirred at least 45 minutes then, after the filtration, gained leaches thing and is back work liquid, stores standby;
The concrete steps of preparation self-sticky cold-seal adhesive are as follows:
1. be 41.98%～59.14% by natural emulsion, back work liquid is 7.02%～7.17%, and purifying waste water is 33.69%～50.89%, takes by weighing natural emulsion, back work liquid respectively and purifies waste water, and is standby;
2. purify waste water from taking by weighing, get wherein 50% purify waste water and be placed in the mixing tank and start stirrer, under agitation, add successively the back work liquid taken by weighing, 60% take by weighing natural emulsion, 30% take by weighing and purify waste water and remaining natural emulsion, having taken by weighing to purify waste water with residue more all transfers to natural emulsion residual in the container and back work liquid in the mixing tank, continue then to stir at least 45 minutes, after the filtration, gained leaches thing and is self-sticky cold-seal adhesive of the present invention.
2. the method for preparing self-sticky cold-seal adhesive according to claim 1 is characterized in that, 2. the step of preparation self-sticky cold-seal adhesive carries out under subzero 5 ℃ to 4 ℃ above freezing.
3. the method for preparing self-sticky cold-seal adhesive according to claim 1 is characterized in that, the solids content of the self-sticky cold-seal adhesive that makes is 38～45% (weight), and viscosity is 30～33 centipoises.
4. the method for preparing self-sticky cold-seal adhesive according to claim 1, it is characterized in that, the nonionic emulsifier that is used to prepare back work liquid is an alkylphenol polyoxyethylene, and the anti-old powder of rubber is a 2-mercaptobenzimidazole, and the molecular-weight average of polyoxyethylene glycol is 400～600.
5. the method for preparing self-sticky cold-seal adhesive according to claim 1 is characterized in that, the natural emulsion viscosity that is used to prepare self-sticky cold-seal adhesive is 55～80 centipoises, and its solids content is 50～75% (weight).
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| CN2008100184283A CN101225286B (en) | 2008-01-31 | 2008-01-31 | Self-sticky cold-seal adhesive and preparation method thereof |
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| CN101225286B true CN101225286B (en) | 2010-06-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559094B (en) * | 2012-01-16 | 2013-06-19 | 无锡信达胶脂材料有限公司 | Cold sealing adhesive for food and medicines |
| CN106236367A (en) * | 2016-08-04 | 2016-12-21 | 湖南慈辉医疗科技有限公司 | A kind of manufacture method of medical ice pad |
| CN107083212A (en) * | 2017-05-25 | 2017-08-22 | 句容市兴武包装有限公司 | A kind of flexible packaging film cold seal glue and preparation method thereof |
| CN109777322A (en) * | 2018-12-21 | 2019-05-21 | 南京斯瑞奇医疗用品有限公司 | A method of improving natural emulsion base adhesive self-adhesion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403519A (en) * | 2002-10-23 | 2003-03-19 | 广东省造纸研究所 | Cold-pressurized adhesive paper tape |
| CN1946824A (en) * | 2004-02-17 | 2007-04-11 | 伯斯蒂克公司 | Cohesive coating for snack food packaging |
-
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- 2008-01-31 CN CN2008100184283A patent/CN101225286B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403519A (en) * | 2002-10-23 | 2003-03-19 | 广东省造纸研究所 | Cold-pressurized adhesive paper tape |
| CN1946824A (en) * | 2004-02-17 | 2007-04-11 | 伯斯蒂克公司 | Cohesive coating for snack food packaging |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2003-119443A 2003.04.23 |
| 张世宽等.一种新型软塑包装材料－－冷封材料.塑料科技35 8.2007,35(8),116-117. |
| 张世宽等.一种新型软塑包装材料——冷封材料.塑料科技35 8.2007,35(8),116-117. * |
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