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Preparation method for hose sheet by multilayer co-extrusion

A multi-layer co-extrusion and hose technology, applied in the direction of chemical instruments and methods, lamination, layered products, etc., can solve the problems that cannot meet the requirements of hose production, and achieve the effect of avoiding wire drawing and ensuring quality

Inactive Publication Date: 2015-12-02
SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through one or more layers of self-adhesive material layer on the innermost side of the bubble, the bubble can be effectively bonded after being folded, which doubles the thickness of the traditional co-extrusion blown bubble and doubles the number of functional layers, not only The functional characteristics of the sheet are improved, and sheets with different functional characteristics can be adjusted and combined, and the thickness can be doubled at the same time, which can fully meet the thickness requirements of hose production and overcome the problem that the thickness of traditional co-extrusion films cannot meet the requirements of hose production. defect

Method used

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  • Preparation method for hose sheet by multilayer co-extrusion
  • Preparation method for hose sheet by multilayer co-extrusion
  • Preparation method for hose sheet by multilayer co-extrusion

Examples

Experimental program
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Embodiment 1

[0034] The method for preparing hose sheet by multi-layer co-extrusion adopts figure 1 Production equipment shown, image 3 For the structure of the air cushion roller that this embodiment adopts, the concrete steps of this embodiment are:

[0035] (1) The extruder and the die mouth extrude the bubble of the multi-layer co-extrusion film, the sizing cage outside the bubble above the die mouth is cooled by the air ring to determine the diameter of the bubble, and the 2 air cushion rollers above the sizing cage spray out The airflow supports the floating film bubble; the film thickness of the film bubble is 240 μm; the sizing cage and the air cushion roller cool the film bubble, so that the film bubble has a certain structural strength, and determine its fixed diameter and film thickness; at the same time, The film bubble is floated by the air support of the air cushion roller and the sizing cage, which will not cause friction with the film bubble, avoid the phenomenon of wire ...

Embodiment 2

[0046] On the basis of embodiment 1, the preferred embodiment of the present invention is the method for preparing hose sheet by multi-layer coextrusion, and its specific steps are:

[0047] The film thickness of the film bubble in step (1) is 100 μm;

[0048] The temperature of the heating roller in step (3) is 40°C;

[0049] The temperature of the cooling roll in step (4) is 15°C.

[0050] The bubble has an 11-layer structure, and the innermost layer of the bubble is provided with 2 self-adhesive material layers, and the self-adhesive material layers are EVA and Surlyn resin respectively. The thickness of the tube sheet was 200 μm.

[0051] All the other parts are identical to Example 1.

Embodiment 3

[0053] On the basis of embodiment 1, the preferred embodiment of the present invention is the method for preparing hose sheet by multi-layer coextrusion, and its specific steps are:

[0054] The film thickness of the film bubble in step (1) is 200 μm;

[0055] The temperature of the heating roller in step (3) is 78°C;

[0056] The temperature of the cooling roll in step (4) is 6°C.

[0057] The bubble has a 9-layer structure, and a layer of self-adhesive material is provided on the inner side of the bubble, and the self-adhesive material layer is Surlyn resin. The thickness of the tube sheet was 400 μm.

[0058] All the other parts are identical to Example 1.

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Abstract

The present invention relates to a preparation method for a hose sheet by multilayer co-extrusion. The method is characterized by: using an extruder and a die orifice to blow bubble by multilayer co-extrusion, wherein the bubble has a 5-11 layer structure, the bubble at least comprises a self-adhesive material layer, and an innermost layer is the self-adhesive material layer; and a cylindrical bubble being laminated into a double-layer sheet structure when the bubble entering into a heating nip roller, the double-layer sheet structure passing through the self-adhesive material layer to adhere to an integrated structure by a heating roller, and through cooling and rolling to obtain the hose sheet, wherein layer number of the hose sheet is two times of the layer number of the bubble. The hose sheet prepared by the method is uniform in thickness, and components of each layer can be adjusted according to the performance requirements of the hose; each layer of the hose sheet forms a chiral symmetry structure, thereby doubling the quantity of function layers with a better functional property; and the thickness of the film can be doubled to 100-460 [mu]m, and the thickness thereof can meet the hose production requirements.

Description

technical field [0001] The invention relates to a method for preparing a hose sheet, in particular to a method for preparing a hose sheet by multilayer co-extrusion. Background technique [0002] The sheets used in the preparation of hoses are all obtained from cylindrical films prepared by blow molding and extruding tubes. Multi-layer co-extrusion technology is a widely used and mature production method, but the Cylindrical membranes have the following problems: First, the diameter of the cylindrical membrane is fixed, and it is not possible to easily adjust the diameter to prepare sheets of different specifications; thirdly, its production efficiency is low; finally, when producing cylindrical membranes There are few materials that can be selected, and it is impossible to adjust the materials of different layers to achieve the adjustment of various characteristics and functions of the hose sheet. The production efficiency, production cost and product quality of the hose a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/00B32B37/06B32B37/10B32B37/08B32B7/10B32B27/08B32B27/32B29C47/06
CPCB32B37/003B29C48/18B32B7/10B32B27/08B32B27/32B32B37/06B32B37/08B32B37/10
Inventor 杨伟
Owner SUNRISE PACKAGING MATERIAL JIANGYIN CO LTD
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