Multilayer electronic cutter film for image graphics

A technology for cutting films, thin films, applied in the direction of processes for producing decorative surface effects, layered products, synthetic resin layered products, etc.

Inactive Publication Date: 2000-05-24
3M CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems of PVC described above lead to the idea of ​​replacing it with polymer materials

Method used

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  • Multilayer electronic cutter film for image graphics
  • Multilayer electronic cutter film for image graphics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0111] Examples 1-3, Cutting and Removal Tests

[0112] Formulations A-C were each made into a multilayer film of the present invention using conventional blown film coextrusion methods. Each of the three extruders (corresponding to the respective layers 12, 14 and 16) feeds the melt formulation to an annular die where it is melt bonded into a layer consisting of three distinct layers. A single melt stream in the form of a sleeve. For each example, the melt from the "top" extruder formed the wear layer, the melt from the "middle" extruder formed the core layer, and the melt from the "bottom" extruder formed the adhesive primer layer. The molten polymer sleeve is blown to its final diameter and thickness by introducing air into the sleeve and clamping it between the die and nip rolls at the top of the blown film tower. The film sleeve is then cut into two flat film rolls, the adhesive base coat of each film is corona treated and wound onto a core. The resulting specimens wer...

Embodiment 4 and comparative example 5

[0117] Embodiment 4 and comparative example 5, adhesive primer test

[0118] Films 60 microns (0.0024") thick were produced using Formulation A and Comparative Formulation B, corona treated non-Surlyn TM on one side and laminated to the acrylate copolymer adhesive and release liner as described above. The film was then cut into 25 mm (1") strips and attached to an aluminum panel. After 24 hours, the film / adhesive tape was removed from the aluminum panel by pulling the film 180° from the aluminum panel. Implementation The film / adhesive laminate of Example 4 could be removed cleanly with no adhesive remaining on the aluminum plate, while the adhesive layer of the film / adhesive laminate of Comparative Example 5 debonded from the film and bonded A layer of the agent remains on the aluminum panel. This is called 100% adhesive transfer and indicates poor adhesion of the adhesive to the film. This test shows that the primer contained in Formulation A The layer can provide improved ...

Embodiment 9

[0127] Example 9: Formulation A was processed into a 90 micron (0.0035") thick and corona treated film using the blown film process, which was laminated to an acrylate copolymer adhesive and silicone coated as described above. When the film was rubbed with a 3M PA-1 plastic applicator, very few scratches were visible to the naked eye, and the film was considered acceptable for image graphics applications.

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Abstract

A multilayer polyolefin film for use as an electronic cutter film is disclosed. The film provides improved abrasion and graffiti resistance, and adhesive anchorage versus a comparable single layer film while still maintaining excellent cutting properties. The film also shows excellent resistance to ''surface impressions'', which are a major problem for traditional vinyl-containing electronic cutting films.

Description

field of invention [0001] This invention relates to adhesive backed films for electronic cutting to form image patterns. background of the invention [0002] Electronically cut films are used to form image patterns and characters on the surface of the film by using a computer-driven cutter or stylus. Commercially available electronic cutting equipment includes Gerber Scientific Products of Manchester, Connecticut and Zund Systemtechnik AG, Altstatten Switzerland. [0003] Polyvinyl chloride (PVC) is often used as the film in this electronic cutting application because it is easy to cut with computer-driven knives, and when properly formulated for outdoor use, it provides good appearance and good durability . [0004] Typically, a computer-driven cutter is used to cut the laminated web consisting of the pigmented polyvinyl chloride-containing film / adhesive / carrier liner in the desired pattern. After cutting, the unwanted film / adhesive is removed from the carrier liner, lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B44C1/16
CPCB44C1/162B32B27/32B32B7/06B32B7/12B32B27/08B32B27/306B32B27/308B32B2250/24B32B2331/04
Inventor J·O·埃姆斯兰特D·L·雷尼尔D·L·弗莱明
Owner 3M CO
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