Multi-layer hot-pressing composite membrane and preparation method thereof

A technology of composite diaphragm and lamella, applied in the field of orthodontic treatment, can solve the problems of good economic benefit and difficult to control the thickness of lamella, and achieve the effect of good economic benefit, reduction of production cost and guarantee of orthodontic effect.
CN110920186AInactive Publication Date: 2020-03-27上海马可菲斯医疗技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海马可菲斯医疗技术有限公司
Publication Date
2020-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a multi-layer hot-pressing composite membrane and a preparation method thereof, wherein the multi-layer hot-pressing composite membrane comprises a plurality of prefabricatedsheet layers, and the sheet layers are sequentially arranged from top to bottom and are spliced into an integrated structure through hot pressing. The problem that the thickness of the sheet layers isdifficult to control is effectively solved, and the thickness of each sheet layer is accurately controlled, so that the hardness of the prepared membrane is consistent with the set hardness, the correction effect is ensured, a plurality of extrusion devices are not needed, and the economic benefit is good.
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Description

technical field

[0001] The invention relates to the field of orthodontics, in particular to a multilayer hot-pressed composite membrane and a preparation method thereof. Background technique

[0002] With the development of society, oral invisible orthodontic technology is widely used because of its transparent appearance, convenient wearing and removal and other factors. In order to increase the transparency, tensile strength, toughness and elasticity of the invisible orthodontic film, the existing invisible orthodontic technology combines three layers The sheets are co-extruded into a composite diaphragm. In actual use, in order to adjust the hardness of the diaphragm, the hardness of the diaphragm is usually changed by adjusting the thickness of each layer.

[0003] In the prior art, as disclosed in the patent CN108394152A, three extruders are used to extrude sheets with a set thickness at the same time, and then the extruded sheets are rolled into a film by three-roll ro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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