An article comprising a film on a carrier or release substrate

A technology of products and substrates, applied in the field of products containing films on carrier substrates or peeling substrates, capable of solving problems such as reducing applicability

Active Publication Date: 2015-04-22
HENKEL KGAA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, exposure to moisture such as occurs under high humidity conditions and/

Method used

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  • An article comprising a film on a carrier or release substrate
  • An article comprising a film on a carrier or release substrate
  • An article comprising a film on a carrier or release substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0243] Material

[0244] 900 is a film-forming ethylene-vinyl acetate copolymer with a vinyl acetate content of about 90% by weight, commercially available from Lanxess AG, Leverkusen, Germany.

[0245] 2123 is a solution of film-forming (meth)acrylate copolymer in ethyl acetate, commercially available from Henkel AG & Co. KGaA, Düsseldorf, Germany.

[0246] Neopentyl 2-cyanoacrylate (NCA) is a solid cyanoacrylate (melting point 41 °C) and can be synthesized according to WO2010 / 023229.

[0247] 2-(2-phenylethyl) cyanoacrylate (PheCA) is a solid cyanoacrylate (melting point 30-32°C) and can be prepared in a solvent using 2-phenyl cyanoacetate, formaldehyde and a catalyst according to Knoevenagel method followed by a cracking process for synthesis. Suitable syntheses can be found in Sato, Mitsuyoshi, Okuyama and Toshio, Jpn. Kokai Tokkyo Koho (1994) and JP 06192202A.

[0248] Release substrate 1 (RS 1 ) is a polyester film with a thickness of 50 μm covered on both sides w...

Embodiment 1

[0287] The curable film of Tape 1 exhibited high initial tack and excellent pressure sensitive adhesion at 23°C. The curable film can be fully cured by exposing the film to a temperature of 65°C for 1 hour followed by a temperature of 23°C for 24 hours. The glass transition temperature (T g ) is -40°C, and the glass transition temperature of the cured film (T g ) is 15°C. For curable films, a storage modulus G' of 3.10 was observed 3 Pa.

[0288] In Table 1 several material properties of Adhesive Tape 1 are given.

[0289] Table 1

[0290]

[0291] The importance of the curing process is further shown in Table 2, where different curing conditions were used. High shear strengths were only observed when the samples were exposed to conditions that would cause the curable film to cure.

[0292] Table 2

[0293]

Embodiment 2

[0295] The curable film of Tape 2 exhibited very high initial tack and very good pressure sensitive adhesion at 23°C. Curable films can be fully cured by exposing the film to a temperature of 65°C for 1 hour followed by a temperature of 23°C for 24 hours.

[0296] In Table 3 several material properties of Tape 2 are given.

[0297] table 3

[0298]

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Abstract

The present invention relates generally to an article comprising a curable film on a release substrate and/or carrier substrate. More particularly, the curable film comprises at least one specific cyanoacrylate monomer and at least one film forming (co)polymer. The article may take the form of a label, a single-sided tape, a transfer tape or a double-sided tape.

Description

technical field [0001] The present invention relates to articles comprising a curable film on a carrier substrate and / or a release substrate, wherein the film comprises at least one specific cyanoacrylate monomer and at least one film-forming (co)polymer . Background technique [0002] Tapes and labels are attractive products from a consumer standpoint because they are easy to handle and store, and they can be used in a wide range of bonding and masking applications, including bonding electrical, electronic, aerospace and audio / video part. [0003] Pressure sensitive adhesives are a common component of tapes. Pressure sensitive adhesives are viscoelastic materials and are available as transfer tapes without a carrier, or as single- or double-sided tapes based on a carrier. They remain tacky for a long period of time and adhere to surfaces, even to difficult-to-bond surfaces such as polyethylene or polypropylene, requiring only minimal pressure. Often, they can be removed...

Claims

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Application Information

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IPC IPC(8): C09J4/00C09J7/00C09J7/02C09J7/35
CPCC09J4/06C09J7/0203C09J7/35
Inventor C·麦卡德尔E·S·肖K·范维克赵立刚A·施奈德A·汉斯约里P·彼得里克R·多曼斯基V·谢弗S·W·谢弗
Owner HENKEL KGAA
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