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Hot melt adhesive for non-setting adhesive label capable of being adhered below zero and preparation method of hot melt adhesive

A hot-melt adhesive and label technology, applied in the direction of adhesives, adhesive types, oil/fat/wax adhesives, etc., can solve the problems of easy warping of self-adhesive labels, increased processing difficulty, and non-sticky colloids, etc. problems, to achieve the effect of improving processing performance and use performance, excellent low temperature performance, and not easy to leak oil

Pending Publication Date: 2022-07-22
FOSHAN XINTAO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, general label adhesives are only suitable for use at room temperature. Once used at low temperature and freezing, the self-adhesive label will be degummed and the colloid will not stick.
Increasing the viscosity of the adhesive can improve the low-temperature viscosity to a certain extent, but the edge of the self-adhesive label is prone to warping at low temperature, and oil leakage occurs at high temperature, and due to the excessive viscosity, the processing difficulty is increased and the die-cutting performance is poor.

Method used

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  • Hot melt adhesive for non-setting adhesive label capable of being adhered below zero and preparation method of hot melt adhesive
  • Hot melt adhesive for non-setting adhesive label capable of being adhered below zero and preparation method of hot melt adhesive
  • Hot melt adhesive for non-setting adhesive label capable of being adhered below zero and preparation method of hot melt adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A sub-zero adhesive hot-melt adhesive for self-adhesive labels, comprising the following components by weight percentage:

[0027]

[0028] The naphthenic oil has a viscosity of 120-160 cps at 40°C.

[0029] The diblock content of the SIS rubber was 75%.

[0030] The petroleum tackifying resin is C5 petroleum resin, and the softening point of the petroleum tackifying resin is 100°C.

[0031] The softening point of the rosin tackifying resin is 100°C.

[0032] The phenolic antioxidant is tetrakis[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester.

[0033] The phosphite antioxidant is tris[2.4-di-tert-butylphenyl]phosphite.

[0034] The preparation method of the hot-melt adhesive for the sub-zero adhesive label comprises the following steps:

[0035] After heating the reaction kettle to 160℃, the naphthenic oil, SIS rubber, phenolic antioxidant, phosphite antioxidant and petroleum tackifying resin accounting for 40% of the total petroleum...

Embodiment 2

[0037] A sub-zero adhesive hot-melt adhesive for self-adhesive labels, comprising the following components by weight percentage:

[0038]

[0039] Phosphite antioxidant 0.5%.

[0040] The naphthenic oil has a viscosity of 120-160 cps at 40°C.

[0041] The diblock content of the SIS rubber is 70%.

[0042] The petroleum tackifying resin is a C5 / C9 copolymer resin, and the softening point of the petroleum tackifying resin is 100°C.

[0043] The softening point of the rosin tackifying resin is 100°C.

[0044] The phenolic antioxidant is tetrakis[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester.

[0045] The phosphite antioxidant is tris[2.4-di-tert-butylphenyl]phosphite.

[0046] The preparation method of the hot-melt adhesive for the sub-zero adhesive label comprises the following steps:

[0047] After heating the reaction kettle to 165℃, the naphthenic oil, SIS rubber, phenolic antioxidant, phosphite antioxidant and petroleum tackifying resin...

Embodiment 3

[0049] A sub-zero adhesive hot-melt adhesive for self-adhesive labels, comprising the following components by weight percentage:

[0050]

[0051] The naphthenic oil has a viscosity of 120-160 cps at 40°C.

[0052] The diblock content of the SIS rubber was 65%.

[0053] The petroleum tackifying resin is C9 petroleum resin, and the softening point of the petroleum tackifying resin is 105°C.

[0054] The softening point of the rosin tackifying resin is 105°C.

[0055] The phenolic antioxidant is 2,6-di-tert-butyl-p-cresol.

[0056] The phosphite antioxidant is tris[2.4-di-tert-butylphenyl]phosphite.

[0057] The preparation method of the hot-melt adhesive for the sub-zero adhesive label comprises the following steps:

[0058] After heating the reaction kettle to 155℃, add naphthenic oil, SIS rubber, phenolic antioxidant, phosphite antioxidant and petroleum tackifying resin accounting for 50% of the total petroleum tackifying resin, 50% of the total amount of rosin tackifyi...

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Abstract

The invention discloses a hot melt adhesive for a non-setting adhesive label capable of being adhered below zero and a preparation method thereof, and relates to the technical field of hot melt adhesives. Comprising the following components in percentage by weight: 20%-30% of naphthenic oil, 30%-40% of SIS rubber, 30%-40% of petroleum tackifying resin, 2%-6% of rosin tackifying resin, 0.1%-1% of a phenolic antioxidant and 0.1%-1% of a phosphite antioxidant. According to the invention, the SIS rubber is used as a base material, proper cohesion is provided, good wettability is also considered, the content of the tackifying resin is controlled, and excellent adhesion performance is maintained at low temperature. According to the formula of the hot melt adhesive, through reasonable matching of all the components, the hot melt adhesive keeps excellent adhesive force performance at low temperature, oil seepage is not prone to occurring, die cutting and waste discharging are easy, and labels made of the hot melt adhesive can be effectively bonded at the temperature of minus 10 DEG C.

Description

technical field [0001] The invention belongs to the technical field of hot-melt adhesives, and in particular relates to a hot-melt adhesive for self-adhesive labels with sub-zero bonding and a preparation method thereof. Background technique [0002] Compared with traditional labels, self-adhesive labels have the advantages of no glue, no paste, no water, no pollution, and save labeling time. They have a wide range of applications and are convenient and fast. Self-adhesive labels, also known as self-adhesive label materials, are made of paper, film or other special materials and are coated with adhesive on the back. [0003] From the varieties that appear on the market, the adhesives used for label sticking can be divided into three categories: pressure-sensitive adhesives, hydrosols and water-rewettable adhesives. Generally, pressure-sensitive adhesives have the characteristics of high initial adhesion, holding force, good adhesion to most packaging materials, etc., and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J157/02C09J191/00C09J11/08C09J11/06
CPCC09J153/02C09J11/08C09J11/06C08L2201/08C08L57/02C08L93/04C08L91/00C08K5/526C08K5/1345
Inventor 李忠卢森潘斌毅
Owner FOSHAN XINTAO NEW MATERIAL TECH
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