Sealant for tinplate cover and preparation method thereof

A sealant and tinplate technology, applied in the direction of adhesive additives, non-polymer adhesive additives, polymer adhesive additives, etc., can solve problems such as damage and use restrictions, reduce costs, improve viscosity, and increase products volume effect

Inactive Publication Date: 2018-09-18
西峡景恒包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of phthalate plasticizers used in traditional polyvinyl chloride PVC bottle cap sealants has been proven to have certain damage to the human liver, and its use is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The present invention proposes a sealant for tinplate covers, and its raw materials are as follows in terms of mass percentage: 45.0% of PVC paste resin, 1.0% of light calcium powder, 0.6% of D505 foaming agent, and dioctyl terephthalate 35.4%, calcium zinc stabilizer 1.0%, acetyl tributyl citrate 12.0%, titanium dioxide 3.0%, simethicone 2.0%, wherein, the degree of polymerization of PVC paste resin is 1200, titanium dioxide is rutile type titanium dioxide, Acetyl tributyl citrate has a pH of 4.0.

[0017] The present invention also provides a kind of preparation method of sealant for tinplate cover, comprises the following steps:

[0018] S1. Select the agitator as an auxiliary tool, and control its temperature at 25 degrees Celsius. After completion, mix the calcium zinc stabilizer, acetylcitric acid and Tributyl fat, simethicone oil, D505 foaming agent and titanium dioxide are slowly put into the mixer in sequence, and then stirred at a speed of 500 rpm for 10 minu...

Embodiment 2

[0023] The present invention proposes a sealant for tinplate covers, and its raw materials are as follows in terms of mass percentage: 46.0% of PVC paste resin, 2.0% of light calcium powder, 0.5% of D505 foaming agent, and dioctyl terephthalate 31.0%, calcium zinc stabilizer 1.5%, acetyl tributyl citrate 13.5%, titanium dioxide 2.5%, simethicone 3.0%, wherein, the degree of polymerization of PVC paste resin is 1300, titanium dioxide is rutile type titanium dioxide, The pH of acetyl tributyl citrate is 4.5.

[0024] The present invention also provides a kind of preparation method of sealant for tinplate cover, comprises the following steps:

[0025] S1. Select the agitator as an auxiliary tool, and control its temperature at 30 degrees Celsius. After completion, mix the calcium zinc stabilizer, acetylcitric acid and Tributyl fat, simethicone oil, D505 foaming agent and titanium dioxide are slowly put into the mixer in turn, and then stirred at a speed of 550 rpm for 13 minutes...

Embodiment 3

[0030] The present invention proposes a sealant for tinplate covers, and its raw materials are as follows in terms of mass percentage: 47.5% of PVC paste resin, 3.0% of light calcium powder, 0.4% of D505 foaming agent, and dioctyl terephthalate 26.6%, calcium zinc stabilizer 2.0%, acetyl tributyl citrate 14.0%, titanium dioxide 2.0%, simethicone 4.5%, wherein, the degree of polymerization of PVC paste resin is 1400, titanium dioxide is rutile type titanium dioxide, Acetyl tributyl citrate has a pH of 5.0.

[0031] The present invention also provides a kind of preparation method of sealant for tinplate cover, comprises the following steps:

[0032] S1. Select the stirrer as an auxiliary tool, and control its temperature at 35 degrees Celsius. After completion, mix the calcium zinc stabilizer, acetylcitric acid and Tributyl fat, simethicone oil, D505 foaming agent and titanium dioxide are slowly put into the mixer in turn, and then stirred at a speed of 600 rpm for 13 minutes; ...

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Abstract

The invention discloses a sealant for a tinplate cover, and the sealant comprises the following raw materials by mass: 45.0-50.0% of PVC paste resin, 1.0-5.0% of light calcium powder, 0.2-0.6% of D505foaming agent, 20.8-35.4% of Dioctyl terephthalate, 1.0-3.0% of a calcium-zinc stabilizer, 12.0-15.0% of acetyl tributyl citrate, 1.0-3.0% of titanium dioxide and 2.0-5.0% of dimethyl silicone oil. The invention also provides a preparation method of the sealant for thre tinplate cover. The the strength of a product made of the sealant is enhanced, and at the same time, the sealant is non-toxic and tasteless, and is safer and healthier.

Description

technical field [0001] The invention relates to the technical field of food packaging equipment, in particular to a sealant for tinplate lids and a preparation method. Background technique [0002] Tinplate bottle caps are currently widely used bottle sealing caps. Bottle cap sealants are an indispensable and important material for sealing bottled products. Especially when used as bottled food seal caps, the requirements for bottle cap sealants are increasing. The higher the pressure, not only requires good sealing performance, but also requires no pollution to food and the environment. However, the use of phthalate plasticizers used in traditional polyvinyl chloride PVC bottle cap sealants has been proven to be harmful to the human liver, so its use is limited. PVC gaskets containing toxic plasticizers and additives are the culprits that have led to the banning of many domestic products, so it is urgent to use new materials and new methods to develop new environmentally fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J127/06C09J11/04C09J11/06C09J11/08
Inventor 王森彭长飞符冬王鸿雁
Owner 西峡景恒包装制品有限公司
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