A printable magnetic composite film and its preparation method

A technology of composite film and printing layer, applied in the direction of magnets, permanent magnets, magnetic objects, etc., can solve the problems of increasing material costs and process costs of pasting glue, affecting the service life of printing materials, and limited adhesion of double-sided tapes. Achieve improved anti-aging properties, high suction power, avoid scratches or scratches

Active Publication Date: 2020-11-10
HENGDIAN GRP DMEGC MAGNETICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above method still has certain disadvantages. The printing material must first be combined with the soft magnetic material through double-sided tape, which increases the cost of materials and the process cost of pasting.
At the same time, due to the existence of the double-sided adhesive layer, the thickness of the entire material is increased
In addition, the double-sided adhesive has limited adhesion, which greatly affects the service life of printing materials

Method used

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  • A printable magnetic composite film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The composite film is mainly divided into three layers: the upper layer is the protective layer, the middle layer is the magnetic receiving layer, and the lower layer is the printing layer. The protective layer is used to protect the magnetic receiving layer. The specific material is varnish, and the thickness of the protective layer is 1 micron. , the thickness of the magnetic layer is 0.05 mm, and the printing layer is PVC film.

[0035] The magnetic receiving layer is a composite material composed of soft magnetic powder, polymer binder and auxiliary materials, wherein the soft magnetic powder is Mn-Zn ferrite powder, and the average particle size of the ferrite powder is 2.3 microns; The binder is polyurethane; the auxiliary material is a silane coupling agent.

[0036] In parts by weight, the magnetic receiving layer contains 600 parts of soft magnetic powder, 100 parts of polymer binder, and 5 parts of auxiliary materials.

[0037] The preparation method is as fo...

Embodiment 2

[0046] The difference from Example 1 is that the magnetic receiving layer contains 600 parts of soft magnetic powder, 100 parts of polymer binder, and 10 parts of auxiliary materials. Other processes and formulations are the same as in Example 1.

Embodiment 3

[0048] The difference from Example 1 is that the magnetic receiving layer contains 1000 parts of soft magnetic powder, 120 parts of polymer binder, and 5 parts of auxiliary materials. Other processes and formulations are the same as in Example 1.

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Abstract

The invention discloses a printable magnetized composite film and a preparation method thereof. The printable magnetized composite film comprises three layers: the upper layer is a protective layer, the middle layer is a magnetized layer and the lower layer is a printing layer; the protective layer is used to protect the magnetized layer and the protective layer has a thickness of 1 to 2 micrometers; the magnetized layer has a thickness of 0.01 to 0.1 mm; materials of the protective layer comprise varnish; and the magnetized layer comprises the following components in parts by weight: 600-1000parts of soft magnetic powder, 80-120 parts of a polymer binder and 0-10 parts of an auxiliary material. The obtained printable magnetized composite film can reduce the thickness of an entire magnetic printing material on one hand, and can avoid the phenomenon that the magnetic printing material cannot be used due to the failure of a double-sided adhesive on the other hand, and has high suction and an anti-aging characteristic.

Description

technical field [0001] The invention relates to the field of magnetic printing materials, in particular to a printable magnetic-receiving composite film and a preparation method thereof. Background technique [0002] With the rapid development of printing technology, digital printing has gradually become the mainstream. This printing technology can directly print digital files such as patterns and text on the computer on substrate materials, such as paper, PP, PVC, oilcloth, etc. Since the printing substrate is not absorbent, when it is necessary to paste the printed material, it is usually necessary to attach glue or tape to the back so that it can be adsorbed on the background board. However, this method will bring many inconveniences. For example, the printed materials are easily wrinkled and damaged during the posting process, and the operation is inconvenient; the printed materials usually need to be destroyed when removing them, and it is not easy to clean the backgro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/44H01F7/02B29D7/01
CPCB29D7/01B41M5/44H01F7/0236
Inventor 刘立东郝斌蒋劭培杜军杰
Owner HENGDIAN GRP DMEGC MAGNETICS CO LTD
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