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Transparent note sheet and method for manufacturing same

A sheet and note technology, which is applied to chemical instruments and methods, container of unadhered notepad-like single sheets, identification devices, etc., can solve problems such as difficult adjustment of fine protrusions, and achieve excellent writability , the effect of low haze

Inactive Publication Date: 2015-08-05
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for these finishing methods, handling equipment is required, and it is not easy to adjust the fine protrusions and depressions

Method used

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  • Transparent note sheet and method for manufacturing same
  • Transparent note sheet and method for manufacturing same
  • Transparent note sheet and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

example

[0122] The present invention will be further explained with reference to the following illustrative examples and comparative examples of the present invention.

[0123] Examples 1 to 24

[0124] In Examples 1 to 24, primer-treated polyethylene terephthalate (PET) film (MELINEX TM 618, available from U.S. DuPont Teijin Film Co., Ltd.) as a substrate to make the note of the present invention, the film has a width of about 9 inches (22.86 cm) and a thickness of about 5 thousandths of an inch (0.127 mm). Used as a resin substrate.

[0125]As shown in Table 1, the coating layer precursor was made of a commercially available UV-curable acrylic resin hardcoat material (906 Hardcoat, manufactured by 3M), which can be Used alone or mixed in a blend of propoxylated (2) neopentyl glycol diacrylate (SR9003, manufactured by Sartomer, LLC).

[0126] Use with Figure 5 In the continuous manufacturing system configured in the manufacturing system system shown in , the resin coating lay...

example 4

[0143] A photomicrograph of the fine relief structure of the front surface of the Example 4 note sheet is in Figure 11 shown in .

[0144] For each of Examples 1 to 24, manufacturing conditions (composition ratio of coating material, film thickness of coating layer precursor), unevenness formation evaluation (surface roughness and distance between adjacent peaks), optical characteristics (transmittance and haze), and writability are shown in Table 1.

example 1

[0145] The optical properties of the note sheet of Example 1 and a commercially available film-type marker used in Comparative Example are shown in Table 2.

[0146] Haze values ​​and values ​​(R a / NNp) in Figure 12 shown in . Also, writability and value (R a / NNp) in Figure 13 shown in .

[0147]

[0148] [Table 2]

[0149] sample

Haze (%)

Transmittance(%)

Example 1

29.9

94.0

Comparative example 1

85.16

79.18

Comparative example 2

77.67

97.01

Comparative example 3

66.80

96.40

[0150] Examples 25 to 41

[0151] In Example 25, the primer-treated PET film (MELINEX TM 618, commercially available from DuPont Teijin Films, USA) was used as the substrate, the film having a width of about 9 inches (22.86 cm) and a thickness of about two thousandths of an inch (0.0508 mm). In addition, a commercially available ultraviolet-curable acrylic resin hard coat material (906HC, manufactured...

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Abstract

A note sheet comprising: (1) a substrate having a first main face and a second main face; (2) a writing receptive layer on the first main face of the substrate, the writing receptive layer having an exposed face or writing surface having a fine relief structure; and (3) at least one segment of repositionable pressure-sensitive adhesive layer on at least a portion of the second main face; wherein the substrate and writing receptive layer having a visible transmittance of at least about 80% and a haze of not more than about 60%. Also a method for making such sheets.

Description

technical field [0001] The present invention relates to a transparent note sheet having a writable front surface and a back surface with a pressure sensitive adhesive layer; and to a method for making the transparent note sheet. Background technique [0002] Note sheets with writable front and back surfaces are widely used as communication tools in business or learning environments, as marking tools for indicating specific parts of documents, and more. The back surface has a pressure sensitive adhesive. agent layer. [0003] Examples of such products include products such as the 3M Company Sheet products such as memos, notes, markers, etc. known by the brand. For these products, information can be written on the front surface of the sheet and can be attached to the desired adherend. Alternatively, these note sheets can be used as markers to mark specific parts of a bonded body, such as documents, pages in a book, etc.; Be peeled / removed without destroying the bond. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B42D5/00B32B27/26G09F3/00
CPCB42D5/003C08J7/04Y10T428/24355Y10T428/24372B05D3/007B05D7/50
Inventor 丰田敦志罗伯特·A·亚帕尔米切尔·A·F·约翰逊戴维·M·马利弗雷德里克·J·古斯塔夫森兰·H·刘杨宇
Owner 3M INNOVATIVE PROPERTIES CO