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Bead planting technique used for high-strength reflecting film production

A technology of reflective film and bead planting, which is applied in the direction of optics, optical components, and devices for coating liquid on the surface, etc. It can solve the problems of overlapping floating beads on the surface of bead planting, achieve enhanced retroreflective performance, increase density, and increase contact area Effect

Active Publication Date: 2010-04-21
CHANGZHOU HUA R SHENG REFLECTIVE MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: aiming at the problem that the charged surface of the glass microspheres in the air-flow distribution beads in the existing bead planting process causes overlapping floating beads on the bead planting surface, the present invention provides a bead planting process

Method used

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  • Bead planting technique used for high-strength reflecting film production
  • Bead planting technique used for high-strength reflecting film production

Examples

Experimental program
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Effect test

example 1

[0020] Select glass microspheres with a particle size of 60 microns to 90 microns and a refractive index Nd=1.93, conduct destaticizing treatment on qualified glass microspheres, and then put them into an oven to preheat the glass microspheres to 85~90°C, and then put them Into the high-position bead tank, the glass beads are added at a constant speed, and then fall from the high-position bead tank into the bead planting tank, and the glass beads are negatively charged by the electrostatic device in the bead planting tank.

[0021] A 50-micron thick polyethylene terephthalate (BOPET) film is selected as the bead-planting base film, and a 25-micron-thick peelable adhesive layer is coated on the BOPET film to form a bead-planting film, which is then dried in a drying tunnel. , There is static electricity on the film-moving roller of the drying tunnel, and the bead-planting film is positively charged when it passes through the film-moving roller. When the bead planting film passe...

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Abstract

The invention relates to the reflecting film manufacturing technique field, in particular to a high-strength reflecting film electrostatic bead-planting technique. Through adopting the static plantingtechnique and temperature control, glass beads can be plunged into an adhesive layer on the planting film, and the plunged depth is one third to half of the microsphere diameter. The technique can solve the problem that the glass bead surface electrification in air current bead distribution, can cause the bead-planting surface to overlap with floating beads in the existing bead-planting technique,thereby greatly improving the density of the glass microsphere and enhancing back reflection performance.

Description

technical field [0001] The invention relates to the technical field of reflective film production, in particular to a bead planting process for high-strength reflective film. Background technique [0002] Reflective film can be divided into two categories: glass bead type and micro prism according to its different retroreflection principles. The most important process in the production of glass bead type reflective film is the bead planting link. The traditional process mostly uses the method of directly contacting the bead planting surface with the static glass beads, which is easy to cause uneven distribution of glass beads and cannot be arranged closely. Layers of microbeads overlap, which seriously wastes raw materials and affects the brightness of reflection. In addition, cold lamination is generally used, and the sinking depth of glass microbeads is not easy to grasp. The bead planting process is the most important link in the production of glass bead type reflective ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/128B05D5/00
Inventor 陆亚建周跃明姚岳忠冉科
Owner CHANGZHOU HUA R SHENG REFLECTIVE MATERIAL
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