阅读说明：本技术 一种湿巾盖专用背胶及其制备方法 (special gum for wet tissue cover and preparation method thereof ) 是由 付旭超 王玉娟 李娜 于 2019-08-15 设计创作，主要内容包括：本发明公开了一种湿巾盖专用背胶及其制备方法,涉及粘胶生产技术领域,针对现有背胶容易粘附灰尘导致变黑,影响背胶的美观性,而且随着长时间使用会影响背胶的粘性的问题,包括以下重量份的原料：水性增粘剂3-7份；粘度调节剂1-5份；抗氧剂2-6份；增白剂0.5-1份；乙烯30-55份；乙烯丙烯酸酯共聚物15-30份；醋酸乙烯共聚物10-15份。本发明本发明制得的背胶不仅具有较好的美观性,可以减低背胶收到灰尘的影响,而且还方便背胶的抗断裂延伸性,减低胶体的老化速度,同时具有较好的流动性,提高胶体的粘性。(The invention discloses a special back adhesive for a wet tissue cover and a preparation method thereof, relates to the technical field of adhesive production, and aims to solve the problems that the existing back adhesive is easy to adhere dust to cause blackening, the attractiveness of the back adhesive is influenced, and the viscosity of the back adhesive is influenced along with long-time use, and the back adhesive comprises the following raw materials in parts by weight: 3-7 parts of a water-based tackifier; 1-5 parts of a viscosity regulator; 2-6 parts of an antioxidant; 0.5-1 part of whitening agent; 30-55 parts of ethylene; 15-30 parts of ethylene acrylate copolymer; 10-15 parts of vinyl acetate copolymer. The back adhesive prepared by the invention has good aesthetic property, can reduce the influence of dust on the back adhesive, is convenient for fracture elongation resistance of the back adhesive, reduces the aging speed of the adhesive, has good fluidity and improves the viscosity of the adhesive.)

1. The special back glue for the wet tissue cover is characterized by comprising the following raw materials in parts by weight:

。

2. The special back adhesive for wet tissue covers as claimed in claim 1, wherein the aqueous tackifier is an aqueous tackifying resin.

3. The special back adhesive for wet tissue covers as claimed in claim 1, wherein the viscosity modifier is selected from paraffin wax, microcrystalline wax and polyethylene wax.

4. the special back adhesive for wet tissue covers as claimed in claim 1, wherein the whitening agent is a fluorescent whitening agent.

5. The preparation method of the special back adhesive for the wet tissue cover as claimed in claim 1, characterized by comprising the following steps:

s1, adding ethylene in the reaction kettle in proportion, adding ethylene acrylate copolymer and vinyl acetate copolymer to melt various reactants together, and keeping the temperature in the reaction kettle at 165-175 ℃;

S2, preparing a stirring kettle, heating to 50 ℃, adding paraffin wax in proportion to melt the paraffin wax, heating the stirring kettle to 70 ℃, adding microcrystalline wax to melt the paraffin wax and the microcrystalline wax together, heating the stirring kettle to 125 ℃, adding polyethylene wax to melt the paraffin wax and the microcrystalline wax together, and finally completely melting the three components together;

s3, pouring the molten paraffin, microcrystalline wax and polyethylene wax in the stirring kettle in the S2 step into the reaction kettle in the S1 step, fully stirring the molten paraffin, microcrystalline wax and polyethylene wax, and continuously keeping the temperature at 165-175 ℃;

S4, reducing the temperature in the reaction kettle to 80 ℃, adding the water-based tackifier and the whitening agent in proportion, fully stirring, and reacting in the reaction kettle for 30 minutes;

S5, stopping vacuumizing, then emptying, finally detecting whether the colloid is generated by melting, and stopping heating;

And S6, checking each item of data to prepare glue.

6. the preparation method of the special back adhesive for the wet tissue cover as claimed in claim 1, wherein a glass rod is used for drainage when the molten paraffin, the microcrystalline wax and the polyethylene wax in the stirring kettle are poured into the reaction kettle.

Technical Field

the invention relates to the technical field of viscose production, in particular to a special back glue for a wet tissue cover and a preparation method thereof.

Background

wet wipes are moist paper towels used to wipe skin. Wet wipes on the market can be roughly divided into two categories: one is that the skin care product is sterilized, but cannot sterilize other articles, contains skin care ingredients, and can only be used for moistening and maintaining the skin. The other type is a disinfection wet tissue which not only can be used for disinfecting, but also can be used for disinfecting other articles, and can be used for disinfecting or sterilizing skin scratches, scratches and the like. When purchasing wet tissues, the functions and the positioning of the wet tissues need to be seen clearly.

Wet piece of cloth is generally placed and is deposited in the wrapping bag, and the sack of wrapping bag can set up wet piece of cloth lid and seal, and wet piece of cloth is covered and then can be coated one deck gum and supplementary sealed, and the gum that commonly uses generally adopts the hot melt adhesive to be the viscose, and traditional hot melt adhesive viscose is stained with the dust easily when using, leads to the viscose to turn black, is unfavorable for the pleasing to the eye of gum, and the long viscidity that influences the gum of live piece of cloth lid for this reason we have provided a special gum of wet piece of cloth lid and preparation method.

Disclosure of Invention

The back glue special for the wet tissue cover and the preparation method thereof provided by the invention solve the problems that the existing back glue is easy to adhere dust to cause blackening, the attractiveness of the back glue is influenced, and the viscosity of the back glue is influenced along with long-term use.

in order to achieve the purpose, the invention adopts the following technical scheme:

The special back glue for the wet tissue cover comprises the following raw materials in parts by weight:

Preferably, the aqueous tackifier is an aqueous tackifier resin.

preferably, the viscosity modifier is paraffin wax, microcrystalline wax and polyethylene wax.

preferably, the whitening agent is a fluorescent whitening agent.

a preparation method of a special back adhesive for wet tissue covers comprises the following steps:

s1, adding ethylene in the reaction kettle in proportion, adding ethylene acrylate copolymer and vinyl acetate copolymer to melt various reactants together, and keeping the temperature in the reaction kettle at 165-175 ℃;

S2, preparing a stirring kettle, heating to 50 ℃, adding paraffin wax in proportion to melt the paraffin wax, heating the stirring kettle to 70 ℃, adding microcrystalline wax to melt the paraffin wax and the microcrystalline wax together, heating the stirring kettle to 125 ℃, adding polyethylene wax to melt the paraffin wax and the microcrystalline wax together, and finally completely melting the three components together;

s3, pouring the molten paraffin, microcrystalline wax and polyethylene wax in the stirring kettle in the S2 step into the reaction kettle in the S1 step, fully stirring the molten paraffin, microcrystalline wax and polyethylene wax, and continuously keeping the temperature at 165-175 ℃;

s4, reducing the temperature in the reaction kettle to 80 ℃, adding the water-based tackifier and the whitening agent in proportion, fully stirring, and reacting in the reaction kettle for 30 minutes;

s5, stopping vacuumizing, then emptying, finally detecting whether the colloid is generated by melting, and stopping heating;

and S6, checking each item of data to prepare glue.

Preferably, when the molten paraffin, the microcrystalline wax and the polyethylene wax in the stirring kettle are poured into the reaction kettle, a glass rod is used for draining.

compared with the prior art, the invention has the following beneficial effects:

1. By adding the fluorescent whitening agent into the raw materials, the surface of an object can reflect light under the condition that the fluorescent whitening agent is illuminated, so that the gum can keep better finish all the time in the using process, and the attractiveness of the product is improved;

2. Three tackifying raw materials of paraffin, microcrystalline wax and polyethylene wax are added in equal proportion, so that the viscosity of the back adhesive is increased, and the set ethylene acrylate copolymer and vinyl acetate copolymer increase the tensile strength and the fracture elongation resistance of the back adhesive, reduce the aging speed of the adhesive and have better fluidity.

in conclusion, the back adhesive prepared by the invention has better aesthetic property, can reduce the influence of dust on the back adhesive, is convenient for the fracture elongation resistance of the back adhesive, reduces the aging speed of the adhesive, and has better fluidity and improved adhesive property.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.