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Foamed biaxially oriented thermosensitive film

A biaxially stretched, heat-sensitive film technology, used in layered products, synthetic resin layered products, temperature recording methods, etc., can solve the problems of limited surface wax strength, poor scratch resistance of materials, damage to printer recording needles, etc. Achieve the effect of perfect printing sensitivity, perfect weather resistance and good color development performance

Active Publication Date: 2020-09-04
无锡和烁丰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it also has inherent disadvantages. Due to the limited strength of the wax on the surface, it will appear exposed after being scratched by a mechanical needle, resulting in poor scratch resistance of the material.
In addition, the higher color temperature often leads to damage to the printer's recording needle, which affects its wide application.
[0006] In the prior art, the above-mentioned color development process has the defects of complex process and high cost, and there is no precedent for directly using polypropylene film to prepare heat-sensitive film

Method used

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  • Foamed biaxially oriented thermosensitive film

Examples

Experimental program
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Embodiment 1

[0041] The preparation method is as follows: Prepare the raw materials of each layer according to the requirements; the matting material is melted by the extruder and extruded as the upper surface layer, the extrusion temperature is 220 degrees, the last extrusion temperature of the surface layer is 220 degrees, the core layer extrusion temperature is 240 degrees, the next time The extrusion temperature of the surface layer is 250 degrees, and the extrusion temperature of the lower surface layer is 220 degrees. After the melts are filtered through the filter respectively, they are merged to form a casting body at five layers using a coat hanger die head, and the temperature of the die head is 250 degrees. The melt enters the water tank for cooling after being cooled into sheets by the quenching roller of the casting machine. The temperature of the quenching roller is 30 degrees, and the temperature of the water tank is 35 degrees. The cooled material enters the longitudinal st...

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Abstract

The invention relates to a foamed biaxially oriented thermosensitive film which is mainly used for an adhesive sticker label surface material. The foamed biaxially oriented thermosensitive film comprises a multilayer structure, and comprises at least one white layer and a color layer with other colors except white, wherein the white layer is a foaming layer, the color layer is a non-foaming layer,the white layer is located on the color layer, the color development density before heating is A, after the film is heated, the white layer melts and shrinks to show the color layer, the thermosensitive function is achieved, the color development density after heating is B, the (B-A) is larger than or equal to 0.5, and the color development density measurement energy level is 20 energy level. Thebiaxially oriented thermosensitive film has good color development performance, relatively perfect printing sensitivity and perfect weather resistance, and can store printing information close to permanence.

Description

technical field [0001] The invention relates to a foamed biaxially stretched heat-sensitive film, which is mainly used for self-adhesive label surface materials. It specifically relates to the formulation and preparation method of a five-layer co-extruded biaxially stretched heat-sensitive film, and belongs to the technical field of heat-sensitive films. Background technique [0002] Diversification of information and expansion of demand have promoted research and development of various recording materials in the field of information recording, and various materials have been put into practical use. Among them, use of a heat-sensitive recording material is advantageous because: (1) it allows an image to be easily recorded using a heating method, (2) the corresponding device can have a simple mechanism and can be easily reduced in size; and (3) Easy to operate and cheap. [0003] Therefore, heat-sensitive recording materials are widely used in various fields, including data...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/06B32B27/08B32B27/18B32B27/20B32B27/24B32B27/36B32B5/18B32B33/00B41M5/36C08J5/18C08L23/14C08L67/02C08K3/36C08K3/26C08L23/16C08L23/12B29C69/02B29C48/08B29C48/18B29C44/20B29C55/14
CPCB29C55/143B29L2009/00B32B27/065B32B27/18B32B27/20B32B27/24B32B27/32B32B33/00B32B2266/025B32B2266/0264B41M5/36B29C48/0012B29C48/0018B29C48/0022B29C48/08B29C48/18C08J5/18C08J2323/12C08J2323/14C08J2323/16C08J2467/02C08K3/26C08K3/36C08K2003/265
Inventor 钱昇阳姜烨朱小峰徐波
Owner 无锡和烁丰新材料有限公司
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