Manufacturing method of electrostatic shielding multilayer film

A multi-layer structure, electrostatic shielding technology, applied in the fields of magnetic/electric field shielding, chemical instruments and methods, lamination, etc., can solve the limitations of saleability, the high cost of the sealable polyolefin layer 1b, and the difficulty of commercializing new materials, etc. problems, to achieve the effect of reducing production costs

Inactive Publication Date: 2010-01-20
高国兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, using this technical solution, the cost of the sealable polyolefin layer 1b as the innermost layer or base layer is too expensive, and the commercialization of this new material is more difficult, and its marketability is limited

Method used

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  • Manufacturing method of electrostatic shielding multilayer film
  • Manufacturing method of electrostatic shielding multilayer film
  • Manufacturing method of electrostatic shielding multilayer film

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] As shown in Figure 1, in order to realize the electrostatic shielding multilayer structure film of the first embodiment of the invention, the specific manufacturing method is as follows:

[0037] The polyolefin layer 1 and the innermost skin layer 6 are coextruded from two sublayers of different materials in a single blown film extruder, the coextrusion of the innermost skin layer having a thickness between 5 microns and 25 microns gives the polyolefin base layer and The innermost surface layer, wherein a permanent non-migrating antistatic chemical additive is added in the innermost surface layer, and the permanent antistatic chemical additive is a polymeric material based on polyamide / polyether block material, and the concentration of the chemical additive is 5 % to 20%, such as pelestat made by Sanyo, will give 10 7 to 10 11 ohm permanent antistatic properti...

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Abstract

The invention discloses a manufacturing method of electrostatic shielding multilayer structural film, comprising following steps: 1) extruding together to obtain a polyolefin basic layer and an innermost surface composite layer , wherein a permanent non-migration anti-electrostatic chemical additive is added to the innermost surface; 2) attaching the polyolefin basic layer and an opposite surfaceof the innermost layer to a bonding layer; 3) then attaching the bonding layer to a metalized polyester layer formed by combining a metal layer and a polyester layer, wherein the metal layer contactsthe bonding layer so as to obtain an electrostatic shielding multilayer structural film with thinner innermost layer and capability of permanently non-migration electrostatic resistance. This method can reduce the production cost and thereby having commercial popularization.

Description

technical field [0001] The invention relates to a method for manufacturing an electrostatic shielding multilayer structure film, in particular to a method for manufacturing an electrostatic shielding multilayer structure film with a permanent antistatic innermost surface layer. Background technique [0002] Based on prior art knowledge, hygroscopic migrating chemical additives are first added to bulk polyolefin in granular form, and then these mixed components are extruded in a standard blown film machine to form a polyolefin layer or film, which is known as A method of antistatic (or more precisely static dissipative) impregnation. The additive will slowly migrate to the surface of the membrane and absorb moisture in the air to form a layer of water molecules that can conduct away the electrostatic charge on the surface of the membrane, therefore, the migratory electrostatic charge characteristic reproduce. However, it is important to note that additives will migrate to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/02B32B37/12B32B38/00B32B15/09B32B27/20H05K9/00
CPCB32B15/08B32B27/08B32B27/18B32B27/304B32B27/306B32B27/32B32B27/36B32B27/365B32B27/40B32B2250/24B32B2255/10B32B2255/205B32B2307/21B32B2307/41B32B2307/412B32B2307/414B32B2439/00B32B2439/80Y10T428/2495
Inventor 高国兴
Owner 高国兴
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