阅读说明：本技术 一种双面低温膜粘合性的配方及工艺 (Formula and process for double-sided low-temperature film adhesion ) 是由 袁齐阳 于 2019-02-20 设计创作，主要内容包括：本发明提供一种低成本高质量双面低温膜粘合性的配方及工艺,包括覆合层、填充层和芯材缠绕层形成外中内三层共挤薄膜,覆合层占比为30％,填充层占比为40％,芯材缠绕层占比为30％,覆合层包括质量比例为2：2：2：1的EVA、低密度线性聚乙烯和聚乙烯料和马来酸酐改性树脂为主要成分粘合剂,填充层包括质量比例为1：2：3的聚乙烯,低密度线性聚乙烯和再生料；芯材缠绕层包括聚乙烯、EAA,其质量比例为1：2,本发明在保证双面低温膜的高黏合度高剥离强度,避免了EAA低温膜的打皱,翘边,同时再生料的利用降低了生产成本。(The invention provides a formula and a process for low-cost high-quality double-sided low-temperature film adhesion, which comprises an outer layer, a middle layer and an inner layer which are formed by a cladding layer, a filling layer and a core material winding layer, wherein the cladding layer accounts for 30 percent, the filling layer accounts for 40 percent, the core material winding layer accounts for 30 percent, and the cladding layer comprises a material with the mass ratio of 2: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and maleic anhydride modified resin as main component adhesives, wherein the filling layer comprises the following components in mass ratio of 1: 2: 3 polyethylene, low density linear polyethylene and regrind; the core material winding layer comprises polyethylene and EAA, and the mass ratio of the polyethylene to the EAA is 1: 2, the invention ensures high bonding degree and high peeling strength of the double-sided low-temperature film, avoids the wrinkling and edge warping of the EAA low-temperature film, and reduces the production cost by utilizing the reclaimed materials.)

1. A formula of double-sided low-temperature film adhesiveness with low cost,

the method is characterized in that:

including covering layer, filling layer and core winding layer and forming interior three-layer coextrusion film in outer, the layer of covering accounts for than being 30%, and the filling layer accounts for than being 40%, and core winding layer accounts for than being 30%, it includes that the mass ratio is 2 to cover the layer: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and maleic anhydride modified resin are used as main component adhesives, and the adhesives account for 14% -16% of the proportion of the clad layer;

the filling layer comprises a mixture of a filler and a filler in a ratio of 1: 2: 3 polyethylene, low density linear polyethylene and regrind;

the core material winding layer comprises polyethylene and EAA, wherein the EAA accounts for 66% of the core material winding layer.

2. The double-sided low temperature film adhesive formulation according to claim 1, characterized in that: the adhesive of the laminating layer accounts for 14.2% of the laminating layer.

3. A low-cost double-sided low-temperature film adhesion process is characterized in that: the method comprises the following process steps:

s1: in the outer layer material mixer, the mass ratio of 2: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and novel adhesive are stirred for 3-5 minutes until the mixture is uniform, and the mixture is put into an outer charging barrel to be used as a material of a composite layer;

s2: in the middle layer material mixer, the mass ratio of 1: 2: 3, stirring the polyethylene, the low-density linear polyethylene and the reclaimed materials for 3-5 minutes until the mixture is uniform, and putting the mixture into a middle-layer charging barrel to serve as a material for a filling layer;

s3: in an inner layer stirrer, mixing a mixture of 2: 1, stirring the mixture of the EAA and the polyethylene for 3-5 minutes, and putting the mixture into an inner layer charging barrel to be used as a material for a core material winding layer;

s4: the layer thickness of the covering layer, the middle layer and the core material winding layer is controlled to be 30%, 40% and 30%;

s5: setting the heating temperature of three extruders of the inner layer, the outer layer and the middle layer to be 150 ℃, starting heating for 3 hours, and after the temperature is sufficiently stabilized and maintained, setting the heating temperature of a die head to be 145 ℃, heating for 3 hours, and after the temperature is stabilized and maintained;

and S6, starting the extruder, and setting the feeding amount of each extruder according to the proportion of the clad layer to be 30 percent, the proportion of the filling layer to be 40 percent and the proportion of the core material winding layer to be 30 percent to produce the novel aluminum strip low-temperature film.

Technical Field

The invention mainly relates to the field of aluminum-plastic composite belts, in particular to a formula and a process for bonding double-sided low-temperature films with low cost and high quality.

Background

The aluminum-plastic composite belt is characterized in that film hot-sticking is carried out on one side or two sides of the surface of the aluminum belt, insulation and sealing are realized, core materials are bonded when being wound, and a protection effect is achieved.

Disclosure of Invention

The invention provides a formula and a process for double-sided low-temperature film adhesion, and provides a formula and a process for double-sided low-temperature film adhesion aiming at the defects in the prior art.

A formula of low-cost double-sided low-temperature film adhesion comprises a cladding layer, a filling layer and a core material winding layer, wherein the cladding layer, the filling layer and the core material winding layer form an outer-middle-inner three-layer co-extruded film, the cladding layer accounts for 30%, the filling layer accounts for 40%, and the core material winding layer accounts for 30%;

the clad layer comprises the following components in a mass ratio of 2: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and maleic anhydride modified resin are used as main component adhesives, and the adhesives account for 14% -16% of the proportion of the clad layer;

the filling layer comprises a mixture of a filler and a filler in a ratio of 1: 2: 3 polyethylene, low density linear polyethylene and regrind;

the core material winding layer comprises polyethylene and EAA, wherein the EAA accounts for 66% of the core material winding layer.

Preferably, the adhesive of the cover layer accounts for 14.2% of the cover layer.

A low-cost double-sided low-temperature film adhesion process,

s1: mixing the raw materials in a mixer according to the mass ratio of 2: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and novel adhesive are stirred for 3-5 minutes until the mixture is uniform, and the mixture is put into an outer charging barrel to be used as a material of a composite layer;

s2: mixing the raw materials in a mixer according to the mass ratio of 1: 2: 3, the polyethylene, the low-density linear polyethylene and the reclaimed materials are used as a new formula and are stirred for 3-5 minutes until the mixture is uniform, and the mixture is put into a middle-layer charging barrel and used as a material for a filling layer;

s3: in a stirrer, mixing a mixture of 2: 1, stirring the mixture of the EAA and the polyethylene for 3-5 minutes, and putting the mixture into an inner layer charging barrel to be used as a material for a core material winding layer;

s4: the layer thickness of the covering layer, the middle layer and the core material winding layer is controlled to be 30%, 40% and 30%;

s5, setting the heating temperature of the three extruders of the inner layer, the outer layer and the middle layer to be 150 ℃, starting heating for 3 hours, and setting the heating temperature of the die head to be 145 ℃, heating for 3 hours, and keeping the temperature when the temperature is stable;

and S6, starting the extruder, and setting the feeding amount of each extruder according to the proportion of the clad layer to be 30 percent, the proportion of the filling layer to be 40 percent and the proportion of the core material winding layer to be 30 percent to produce the novel aluminum strip low-temperature film.

The invention relates to a production process of a formula for low-temperature film adhesiveness of an aluminum-plastic composite belt, which comprises a whole set of processes of uncoiling, bonding, preheating, hot-paste compounding, hot-drying curing, cooling, loop storage, coiling and uncoiling from the selection of materials. The invention provides a method for making the aluminum-plastic composite belt product stable in comprehensive performance, free of adhesive film, high in peeling strength between the aluminum belt and the plastic film, remarkably reduced in production cost, ensured in product performance and improved in product appearance quality.

The invention has the beneficial effects that: the high adhesion degree of the double-sided low-temperature film is improved, the adhesion with an aluminum tape is good, the high peel strength of the double-sided low-temperature film is ensured to reach 7.1N/CM, and the adhesion strength is high when the core material is wound to reach 20N/CM.

Detailed Description

A formula of low-cost double-sided low-temperature film adhesion comprises a cladding layer, a filling layer and a core material winding layer, wherein the cladding layer, the filling layer and the core material winding layer form an outer-middle-inner three-layer co-extruded film, the cladding layer accounts for 30%, the filling layer accounts for 40%, and the core material winding layer accounts for 30%;

the clad layer comprises the following components in a mass ratio of 2: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and maleic anhydride modified resin are used as main component adhesives, and the adhesives account for 14% -16% of the proportion of the clad layer;

the filling layer comprises a mixture of a filler and a filler in a ratio of 1: 2: 3 polyethylene, low density linear polyethylene and regrind;

the core material winding layer comprises polyethylene and EAA, wherein the EAA accounts for 66% of the core material winding layer.

Preferably, the adhesive of the cover layer accounts for 14.2% of the cover layer.

The coating layer accounts for 30%, the filling layer accounts for 40%, and the core material winding layer accounts for 30%. By the arrangement of the proportion, the EAA content of the winding layer is reduced, membrane material wrinkling is avoided, and the product quality of the composite belt is improved.

The adhesive accounts for 14% of the proportion of the clad layer, and the EVA accounts for 28% of the proportion of the clad layer. By the arrangement of the proportion, the film flatness is improved and the adhesion between the composite layer and the filling layer is improved while the peeling between the film and the aluminum strip is ensured.

The proportion of EAA in the core material winding layer is 66%. By the aid of the proportion, the adhesive property of the winding layer is guaranteed, production cost is reduced, and the phenomenon of film material wrinkling is avoided.

A low-cost double-sided low-temperature film adhesion process,

s1: mixing the raw materials in a mixer according to the mass ratio of 2: 2: 2: 1, EVA, low-density linear polyethylene, polyethylene material and novel adhesive are stirred for 3-5 minutes until the mixture is uniform, and the mixture is put into an outer charging barrel to be used as a material of a composite layer;

s2: mixing the raw materials in a mixer according to the mass ratio of 1: 2: 3, the polyethylene, the low-density linear polyethylene and the reclaimed materials are used as a new formula and are stirred for 3-5 minutes until the mixture is uniform, and the mixture is put into a middle-layer charging barrel and used as a material for a filling layer;

s3: in a stirrer, mixing a mixture of 2: 1, stirring the mixture of the EAA and the polyethylene for 3-5 minutes, and putting the mixture into an inner layer charging barrel to be used as a material for a core material winding layer;

s4: the layer thickness of the covering layer, the middle layer and the core material winding layer is controlled to be 30%, 40% and 30%;

s5, setting the heating temperature of the three extruders of the inner layer, the outer layer and the middle layer to be 150 ℃, starting heating for 3 hours, and setting the heating temperature of the die head to be 145 ℃, heating for 3 hours, and keeping the temperature when the temperature is stable;

and S6, starting the extruder, and setting the feeding amount of each extruder according to the proportion of the clad layer to be 30 percent, the proportion of the filling layer to be 40 percent and the proportion of the core material winding layer to be 30 percent to produce the novel aluminum strip low-temperature film.

The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.