Low-temperature hot-melt pressure-sensitive adhesive for disposable hygienic product and preparation method thereof

A hygienic product, low-temperature heating technology, applied in the direction of adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve problems such as equipment failure, difficulty in removal, and reduced production efficiency, so as to save machine maintenance costs , good initial tack and stickiness performance, the effect of reducing maintenance costs

Active Publication Date: 2016-10-26
GUANGDONG RURGA NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] At present, most of the hot-melt pressure-sensitive adhesives produced by domestic and foreign manufacturers are used at a temperature of 160°C to 180°C. When used at this temperature, some problems will arise: First, the materials to be bonded to sanitary napkins and diapers are subject to certain restrictions. Many materials that are not resistant to high temperatures cannot be used. If the use temperature is lowered, that is, when the temperature of the melt glue is controlled at a low temperature (<160°C), it is easy to cause "reglue" phenomenon, that is, the glue is applied to the sanitary napkin under this temperature condition. After use, the glue on the sanitary napkin will be transferred to the underwear during use, making it difficult to remove and causing pollution
Secondly, hot-melt pressure-sensitive adhesives are heated repeatedly in the temperature range of 160°C to 180°C, which is prone to aging and decomposition, making the glue turn yellow. Rubber nozzles, etc., cause equipment failure and produce a large amount of waste products. Therefore, equipment needs to be shut down for maintenance on time during production, which will inevitably reduce production efficiency and increase production costs.
Finally, the use of hot-melt pressure-sensitive adhesives at high temperatures can easily cause personnel burns. At the same time, long-term heating at high temperatures consumes a lot of energy and increases production costs.

Method used

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  • Low-temperature hot-melt pressure-sensitive adhesive for disposable hygienic product and preparation method thereof
  • Low-temperature hot-melt pressure-sensitive adhesive for disposable hygienic product and preparation method thereof
  • Low-temperature hot-melt pressure-sensitive adhesive for disposable hygienic product and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The low-temperature hot-melt pressure-sensitive adhesive for disposable hygiene products contains the following components in mass percentage: SBS rubber 13.7%; modified rosin resin 55.5%; naphthenic oil 29.3%; polyethylene wax 1%; antioxidant 0.5% .

[0040] The special low-temperature hot-melt pressure-sensitive adhesive for disposable sanitary products described in this embodiment is prepared by the following method:

[0041] (1) 10.0% SBS rubber (the model is Taiwan Rubber SBS4265), 3.7% SBS rubber (the model is Yuehua 188), 15% naphthenic oil (the model is 4010 produced by Karamay), 0.5% antioxidant (the model is 1010, 168) Mix evenly, heat to 140-150°C, continuously stir and vacuumize to -0.08mpa until the material is completely melted;

[0042] (2) In the above-mentioned melted material, add 55.5% modified rosin resin (the model is KOMO-KF399S), 14.3% naphthenic oil (the model is 4010 produced by Karamay), 1% polyethylene wax (the model is H-110 ), keep the hea...

Embodiment 2

[0048] The low-temperature hot-melt pressure-sensitive adhesive for disposable hygiene products contains the following components in mass percentage: SBS rubber 13.7%; modified rosin resin 55.5%; naphthenic oil 29.3%; polyethylene wax 1%; antioxidant 0.5% .

[0049] (1) Mix 15% naphthenic oil (type 4010 produced by Karamay), 6% SBS (4270 rubber), 7.2% SBS (188 rubber), 0.3% antioxidant (type 1010, 168), and heat To 140 ~ 150 ℃, continuous stirring and vacuuming to -0.1mpa, until the material is completely melted;

[0050] (2) In the above-mentioned melted material, add 16% naphthenic oil (4010 produced by Karamay), 34% hydrogenated petroleum resin (Lanhua C5 2#), 20.5% hydrogenated petroleum resin (5600), 1% Fischer-Tropsch wax (H1), keep the heating temperature at 120-130°C, stir evenly, wait until it is completely melted, vacuumize until there are no bubbles, and the resulting mixture is a low-temperature adhesive for petroleum-based disposable sanitary products.

[0051] ...

Embodiment 3

[0056] The low-temperature hot-melt pressure-sensitive adhesive for disposable hygiene products contains the following components in mass percentage: SIS 10%; SBS 20%; modified rosin resin 40%; naphthenic oil 24.5%; 56# semi-refined wax 5%; Oxygen 0.5%.

[0057] Example 3 The low-temperature hot-melt pressure-sensitive adhesive for disposable sanitary products is prepared by the following method:

[0058](1) Mix 10% SIS, 20% SBS, 12% naphthenic oil, and 0.5% antioxidant evenly, heat to 140-150°C, continuously stir and evacuate to -0.06mpa until the material is completely melted;

[0059] (2) Add 40% modified rosin resin, 12.5% ​​naphthenic oil, and 5% polyethylene wax to the above-mentioned melted materials, keep the heating temperature at 130-140°C, stir evenly, and wait until all materials are completely melted, pump Vacuum until there are no air bubbles to obtain the special low-temperature hot-melt pressure-sensitive adhesive for disposable sanitary products.

[0060] Th...

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Abstract

The invention discloses a low-temperature hot-melt pressure-sensitive adhesive for a disposable hygienic product. The low-temperature hot-melt pressure-sensitive adhesive is prepared from 10-30wt% of styrenic thermoplastic elastomer, 40-60wt% of tackifying resin, 15-35wt% of naphthenic oil, 0.1-1.0wt% of antioxidant, and selectively 0.1-5wt% of wax. The low-temperature hot-melt pressure-sensitive adhesive has appropriate melt viscosity, good initial bonding performance, persistent bonding performance, operative weldability, heat resistance and the like within the using temperature range from 120 DEG C to 130 DEG C, carbonization is effectively reduced, the equipment failure rate is lowered, the production efficiency is improved, ageing and decomposition of the tackifying resin and the other constituents are reduced, and the environment pollution is reduced. The invention further discloses a preparation method for the hot-melt pressure-sensitive adhesive.

Description

technical field [0001] The invention relates to a low-temperature hot-melt pressure-sensitive adhesive and a preparation method thereof, in particular to a low-temperature hot-melt pressure-sensitive adhesive for disposable sanitary products and a preparation method thereof. Background technique [0002] Disposable sanitary products refer to various daily necessities that are discarded after one use, are in direct contact with the human body, and are used for the purpose of human hygiene or health care. For example, feminine hygiene products (sanitary napkins / pads, etc.), diapers (baby diapers and adult incontinence products), medical products (surgical gowns / medical mattresses, gloves, shoe covers, masks) and pet products (pet pads and pet urine Pants), etc., the appearance must be neat and tidy, conform to the inherent shape of the sanitary product, and must not have abnormal odors and foreign objects. It must not cause adverse irritation, allergic reaction and other dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J193/04C09J157/02C09J153/02C09J191/00C09J11/06
CPCC08L2205/02C08L2205/025C08L2205/035C09J11/06C09J157/02C09J193/04C08L53/02C08L91/00C08L23/06C08K5/1345C08K5/526C08L91/06
Inventor 万诚李锡威
Owner GUANGDONG RURGA NEW MATERIAL TECH
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