Preparation method of adhesive resin for multilayer coextruded plastic composite hose

A composite hose and multi-layer co-extrusion technology, which is applied to the preparation of adhesive resin for multi-layer co-extruded plastic composite hose, and the bonding of polyethylene/ethylene-vinyl alcohol copolymer multi-layer co-extruded plastic composite hose In the field of multi-layer, it can solve the problems of delamination and non-existence of composite hoses, which affect product quality and production efficiency, and achieve the effect of high bonding strength, excellent bonding performance and less crystal points

Active Publication Date: 2015-02-18
HEYUAN PLG MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the bonding strength is not enough, the composite hose will delaminate, seriously affecting product quality and production efficiency
At present, the adhesive resin used in domestic production of multi-layer co-extruded plastic composite hose is mainly Japanese adhesive resin, and there is no such adhesive resin in China.

Method used

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  • Preparation method of adhesive resin for multilayer coextruded plastic composite hose

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw material formulation of the adhesive resin composition for multi-layer co-extruded plastic composite hose (the following proportions are weight percent content) is as follows:

[0027] 50% Linear Low Density Polyethylene

[0028] 15% functionalized modified linear low density polyethylene

[0029] 20% ethylene-butylene copolymer elastomer

[0030] 15% LDPE

[0031] 0.08% thermal oxygen stabilizer

[0032] The above-mentioned components are extruded and granulated by plasticizing and blending with a twin-screw extruder. The length-to-diameter ratio of the extruder is L / D=40:1, and the processing temperature is 150-230°C. Adhesive resin for multi-layer co-extruded plastic composite hose.

Embodiment 2

[0034] The raw material formulation of the adhesive resin composition for multi-layer co-extruded plastic composite hose (the following proportions are weight percent content) is as follows:

[0035] 40% Linear Low Density Polyethylene

[0036] 20% functionalized modified linear low density polyethylene

[0037] 22% ethylene-octene copolymer elastomer

[0038] 18% LDPE

[0039] 0.1% thermal oxygen stabilizer

[0040] The above-mentioned components are extruded and granulated by plasticizing and blending with a twin-screw extruder. The length-to-diameter ratio of the extruder is L / D=40:1, and the processing temperature is 150-230°C. Adhesive resin for multi-layer co-extruded plastic composite hose.

Embodiment 3

[0042] The raw material formulation of the adhesive resin composition for multi-layer co-extruded plastic composite hose (the following proportions are weight percent content) is as follows:

[0043] 37% Linear Low Density Polyethylene

[0044] 23% functionalized modified linear low density polyethylene

[0045] 20% ethylene-butylene copolymer elastomer

[0046] 20% LDPE

[0047] 0.12% thermal oxygen stabilizer

[0048] The above-mentioned components are extruded and granulated by plasticizing and blending with a twin-screw extruder. The length-to-diameter ratio of the extruder is L / D=40:1, and the processing temperature is 150-230°C. Adhesive resin for multi-layer co-extruded plastic composite hose.

[0049] Table 1 shows the performance comparison data of the bonding resin obtained in the above examples and similar products in Japan.

[0050] Table 1

[0051]

[0052] The products of Example 1, Example 2, and Example 3 and Japanese bonding resin were used to make f...

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Abstract

The invention discloses a preparation method of an adhesive resin for a multilayer coextruded plastic composite hose. The adhesive resin comprises the following raw materials in percentage by weight: 30%-70% of linear low density polyethylene (LLDPE), 10%-30% of functionalized modified LLDPE, 10%-30% of vinyl elastomer, 5%-20% of low density polyethylene (LDPE) and 0.01%-1% of a thermal oxidation stabilizer. The adhesive resin is prepared by extruding and pelletizing in a twin-screw extruder through a plasticizing blending process. The adhesive resin disclosed by the invention is used for the adhesive layer of the multilayer coextruded plastic composite hose of polyethylene (PE)/ethylene-vinyl alcohol copolymer (EVOH), and is excellent in processability, good in heat resistance and few in crystal points, and in particular, excellent in adhesive property; as a result, a good adhesive layer material is provided for the multilayer coextruded plastic composite hoses.

Description

technical field [0001] The invention belongs to the field of polymer functional materials, relates to the technical field of hot melt adhesives, in particular to a method for preparing an adhesive resin for multi-layer co-extruded plastic composite hoses, which is mainly used for polyethylene (PE) / ethylene-vinyl alcohol copolymerization The adhesive layer of the multi-layer co-extruded plastic composite hose of EVOH. Background technique [0002] In recent years, plastic composite hose has gradually developed into an internationally advanced packaging container. The product is non-toxic and tasteless, hygienic and convenient to use, bright in color, beautiful in surface color, and low in price. Widely used in the packaging of cosmetics, medicine, food, detergent and other daily necessities, it can highlight the value of the product. The tube packaging is economical and convenient, easy to carry, suitable for containing lotions and gels. With the rapid development of the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J123/06C09J151/06C09J11/06
Inventor 范德辉黄昌政吴雪生
Owner HEYUAN PLG MATERIALS
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