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A product and film layer technology, applied in the direction of layered products, duplication/marking methods, synthetic resin layered products, etc., can solve the problem of difficult imaging of polyolefin films

Active Publication Date: 2014-04-16
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyolefin films are difficult to image, so it may be necessary to apply additional image-receiving layers, such as ink-receiving layers, toner-receiving layers, primer layers, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 11

[0071] *Example 11 using CAB3b

[0072] Table 1B: Results - Effect of various polyurethane resins, CAB and CAP resins

[0073]

[0074] *Breaks at elongation less than 50%.

[0075] Table 2A: Formulation - Effect of various PU:CAB and PU:CAP ratios

[0076] example

PU1

CAB3a

CAP1

17

60

40

0

18

45

55

0

19

30

70

0

[0077] 20

15

85

0

21

90

0

10

22

75

0

25

23

60

0

40

24

45

0

55

25

30

0

70

26

15

0

85

[0078] Table 2B: Results - Effect of various PU:CAB and PU:CAP ratios

[0079]

[0080] *Breaks at elongation less than 50%.

[0081] Table 3B: Results - Effect of Plasticizer Content

[0082]

[0083] Table 4A: Formulation - Effect of polymeric plasticizer

[0084] example

PU1

CAP1

CAP3

A1

A2

31

...

example 66

[0104] Example 66: Solvent cast membranes of the invention

[0105] The coating solution was prepared by combining 80% (w / w) N,N-dimethylformamide, 11% (w / w) PU1 and 9% (w / w) CAP3 in a closed container, and the container It was placed on a roll at 25°C for 16 hours, then it was heated at 65°C for 4 hours, followed by an additional 24 hours at 25°C on a roll. A viscous cloudy solution was obtained. The solution was coated onto a 96.5 micron (0.0038 inch) thick, untreated polyester film substrate using a 305 mm (12 inch) wide notched bar coater set at a gap of 0.41 mm (0.016 inch). The coated polyester substrate was dried at 65°C for 6 hours to obtain an approximately 75 micron (0.003 inch) thick film of the present invention on the polyester substrate. The film was carefully removed from the polyester base and the print density of the film was evaluated as described above. The results are shown in Table 9 below.

[0106] Table 9: Results - Print Density

[0107]

example 67

[0109] Multilayer films were prepared by coextruding the following layers:

[0110] 1. The first layer is a 1.0 mil blend of 55% by weight PU1 and 45% by weight CAP4,

[0111] 2. The second layer is 0.2 mil maleated polyethylene (available from Dow Chemical Co. under the trade designation Amplify GR209),

[0112]3. The third layer was 2.55 mils of 70 wt% Low Density Polyethylene (Equistar Petrothene NA271009 from LyondellBasell Corporation) and 30 wt% PolyOne 15077White CC00038580 White Pigment Masterbatch (PolyOne 15077White CC00038580White Pigment Masterbatch) (from PolyOne Corporation), a mixture of

[0113] 4. The fourth layer was 0.25 mil ethylene-acrylic acid copolymer (available from Dow Chemical Co. under the trade designation Primacor 1410).

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Abstract

The present application is directed to articles useful as graphic films. Specifically, the present application is directed to an article comprising a film layer, the film layer comprising a polymer blend comprising a thermoplastic polyurethane and a cellulose ester, and an ink layer adjacent to at least one surface of the film. In some embodiments, the cellulose ester is a cellulose acetate butyrate. In some embodiments, the cellulose ester is a cellulose acetate propionate.

Description

technical field [0001] The present invention relates to film articles, methods for their preparation and their use as graphic films. Background technique [0002] Graphical films are used, for example, to apply designs such as images, graphics, text and / or information to windows, buildings, road surfaces or vehicles (e.g., cars, vans, buses, trucks, trams, etc.) For advertising or decorative purposes, for example. Many of these surfaces, such as cars, are irregular and / or uneven. [0003] For graphic films, it is desirable to have a film that conforms to a curve, depression or protrusion on the surface of the substrate so that the film can be stretched around the curve or protrusion or can be pressed down into the depression without breaking the film or delamination. This property is often referred to as conformability. It is also desirable that the film not delaminate or peel (ie, blister) from the substrate surface after application. Graphical films can also be imagea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44C1/20B44C1/00B44C3/02
CPCB05D7/00B41M1/30B41M5/0047B32B38/145B44C1/00B32B2307/75B32B2307/518B44C3/02B32B33/00B32B27/00B41M5/0064B41M5/0052B32B2307/712B44C1/20Y10T428/24901Y10T428/24802B41M5/5281
Inventor 罗纳德·S·斯蒂尔曼约翰·A·尼尔森基思·R·莱昂
Owner 3M INNOVATIVE PROPERTIES CO
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