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Glue for packaging food moisture-proof agent and preparation method thereof

A moisture-proof agent and packaging technology, applied in the field of food moisture-proof agent packaging glue and its preparation, can solve the problems of sour taste, food quality damage, packaging bag damage, etc., to ensure food safety, good bonding effect, avoid the effect of destruction

Active Publication Date: 2018-04-24
浙江固特新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are EVA, EAA series of adhesives used in food moisture-proof agents, and other series such as pressure-sensitive adhesives. The cost of EVA and EAA is relatively low, but the acetic acid group will be partially decomposed, with a sour taste, affecting food quality, and adhesion to PET film. The knot effect is not obvious
The pressure-sensitive adhesive is soft and sensitive to temperature. It is easily affected by high temperature during transportation, resulting in a decrease in the strength of the adhesive, which can easily lead to damage to the packaging bag, thereby deteriorating the quality of the food.

Method used

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  • Glue for packaging food moisture-proof agent and preparation method thereof
  • Glue for packaging food moisture-proof agent and preparation method thereof
  • Glue for packaging food moisture-proof agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]

[0027] Preparation method: Step 1: Heat the stirring tank to 110°C, add paraffin wax and PE wax in proportion, and stir until completely melted; Step 2: Add silane-modified atactic polyolefin and rich Propylene-containing random polyolefin; Step 3: Open the vacuum valve to make the vacuum degree -0.1~0.5MPa, stir until completely melted, and keep warm for 10-30min; Step 4: Close the vacuum valve, add C5 hydrogenated petroleum after venting Vacuumize the resin and partially differentiated hydrogenated tackifying resin until it melts completely; Step 5: Turn off the heating, wait until the temperature drops to 110°C, and discharge.

Embodiment 2

[0029]

[0030] Preparation method: Step 1: Heat the stirring tank to 110°C, add paraffin wax and PE wax in proportion, and stir until completely melted; Step 2: Add silane-modified atactic polyolefin and rich Propylene-containing random polyolefin; Step 3: Open the vacuum valve to make the vacuum degree -0.1~0.5MPa, stir until completely melted, and keep warm for 10-30min; Step 4: Close the vacuum valve, add C5 hydrogenated petroleum after venting Vacuumize the resin and partially differentiated hydrogenated tackifying resin until it melts completely; Step 5: Turn off the heating, wait until the temperature drops to 110°C, and discharge.

Embodiment 3

[0032]

[0033] Preparation method: Step 1: Heat the stirring tank to 110°C, add paraffin wax and PE wax in proportion, and stir until completely melted; Step 2: Add silane-modified atactic polyolefin and rich Propylene-containing random polyolefin; Step 3: Open the vacuum valve to make the vacuum degree -0.1~0.5MPa, stir until completely melted, and keep warm for 10-30min; Step 4: Close the vacuum valve, add C5 hydrogenated petroleum after venting Vacuumize the resin and partially differentiated hydrogenated tackifying resin until it melts completely; Step 5: Turn off the heating, wait until the temperature drops to 110°C, and discharge.

[0034] Product performance parameters:

[0035] Viscosity (180°C): 1800mpa.s;

[0036] Softening point: 84°C;

[0037] Tensile strength: 3MPa;

[0038] Elongation at break: 200%;

[0039] Ice-water mixture: not brittle;

[0040] 3 hours at 170°C: no yellowing.

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Abstract

The invention specifically relates to an adhesive for a food desiccant package and a preparation method of the adhesive. Raw materials of the adhesive comprise a certain ratio of paraffin, PE wax, silane-modified random polyolefin, random polyolefin rich in propylene, a C5 hydrogenated petroleum resin, and a partially-disproportionated hydrogenated tackifying resin. The preparation method comprises: step I, raising the temperature of a stirred tank to 110 DEG C, adding paraffin and PE wax according to a ratio, and performing stirring till the materials are fully melt; step II, adding silane-modified random polyolefin and polyolefin rich in propylene when the temperature of the stirred tank is raised to 140 DEG C; step III, opening a vacuum valve to make the vacuum degree be -0.1 MPa to 0.5 MPa, performing stirring till the materials are totally melt, and performing thermal insulation for 30 min; step IV, closing the vacuum valve, adding the C5 hydrogenated petroleum resin and the partially-disproportionated hydrogenated tackifying resin after venting, and performing vacuum pumping till the materials are totally melt; and step V, closing heating, reducing the temperature to 110 DEG C, and performing discharging.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and specifically refers to an adhesive for food moisture-proofing agent packaging and a preparation method thereof. Background technique [0002] With the rapid development of the economy and the continuous progress of the society, people's living standards are also constantly improving, and the requirements for the quality of life are also increasing, especially in food, which is related to people's direct health. More attention has been paid to environmental protection, so hot melt adhesives for food moisture-proof packaging have been developed. [0003] At present, there are EVA, EAA series of adhesives used in food moisture-proof agents, and other series such as pressure-sensitive adhesives. The cost of EVA and EAA is relatively low, but the acetic acid group will be partially decomposed, with a sour taste, affecting food quality, and adhesion to PET film. The knot effect is also not obvio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/26C09J123/10C09J157/02C09J191/06
Inventor 陈慧王欣蕊邵宝有邵晓巍吴添园
Owner 浙江固特新材料科技股份有限公司