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In-mold label with separable part

An in-mold label and label technology, which can be applied to stamps, instruments, identification devices, etc., and can solve problems such as loosening and reduced adhesion

Inactive Publication Date: 2005-11-02
YUPO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the back surface is subjected to surface activation treatment so as to be sufficiently compatible with the ink and when printed with the ink, the adhesion between the separable part and the labeled container is greatly reduced and thus there arises a problem that the separable part is easily loose from the surface of the labeled container

Method used

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  • In-mold label with separable part
  • In-mold label with separable part
  • In-mold label with separable part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088]

[0089]

[0090] The catalyst was prepared according to the method disclosed in JP-A 61-130314. Specifically, to 2.0 mmol of ethylene-bis(4,5,6,7-tetrahydroindenyl) zirconium dichloride complex was added methylaluminoxane (purchased from Toyo Stofer). This was diluted to 10 liters with toluene, and thus a catalyst solution was prepared. Using this solution, polymerization was carried out as follows: A mixture of ethylene and 1-hexene in which the 1-hexene content was 80% by weight was fed into a 1.5 liter capacity stirred autoclave type continuous reactor. The pressure inside the reactor is maintained at 1,600kg / cm 2 , the reaction temperature is 160°C.

[0091] After the reaction, an ethylene / α-olefin copolymer (with a 1-hexene content of 22% by weight) was obtained with an MFR of 18 g / 10 min and a density of 0.898 g / cm 3 And the Q value is 1.9. There is a peak in the TREF elution curve of this polymer with a peak temperature of 50°C. H / W of this peak temper...

Embodiment 2

[0119] An in-mold label having a separable portion and a labeled resin container were prepared in the same manner as in Example 1 except that a lubricant was applied to 60% of the area of ​​the separable portion. In this blown container, the label print did not fade, and the label neither shrunk nor bubbled. Additionally, the detachable portion of the label does not come loose from the container.

Embodiment 3

[0121] In the method of Example 1, after the aqueous solution is applied to the surface layer of the film, the aqueous solution containing only 1.0% by weight of the quaternary nitrogen-containing acrylic terpolymer (a) is applied to the back of the film, thereby forming An antistatic layer is formed on both sides. The wettability index of the surface of the heat-sealing resin layer on the back side of the film was 50 mN / m. Others are as shown in Example 1, and an in-mold label having a separable portion and a labeled resin container can be manufactured in the same manner as in Example 1. In the blown containers thus obtained, the label print did not fade and the label neither shrunk nor bubbled. Additionally, the detachable portion of the label does not come loose from the container.

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PUM

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Abstract

The present invention relates to an in-mold label, which comprises a thermoplastic resin film base layer and a heat-sealing resin layer, wherein the wettability index of the surface of the thermoplastic resin film base layer and / or the surface of the heat-sealing resin layer is 34mN / m to 73mN / m m, the label comprises a label body and a detachable part, a tearable perforation is provided between the label body and the detachable part, and when the label is adhered to the For containers, the adhesion strength between the separable part and the container is 80gf / 10mm to 270gf / 10mm. The in-mold label can be printed on both sides, and the detachable portion of the label does not come loose from the container during shipping and use of the labeled container. The detachable portion can be easily torn from the container without rupture.

Description

technical field [0001] The present invention relates to an in-mold label having a detachable portion, which is adhered to a thermoplastic resin container while manufacturing the container, the thermoplastic resin container being manufactured by a mode of differential pressure molding or blow molding. Background technique [0002] Some in-mold labels are known for use in an in-mold process in which a label is placed in a mold in advance, a thermoplastic resin is introduced into the mold, and injection molding, blow molding, differential pressure Forming or foam molding forms the container while adhering the label to the manufactured container (see JP-A 58-69015 and EP-A 254,923). [0003] As an example of such a label, an in-mold label having a detachable coupon ticket or the like is proposed (see JP-A 6-51701, 6-95593, 6-308886). Several methods have been proposed to design such labels with a detachable portion so that buyers who buy back labeled products can easily tear of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F3/00
Inventor 船户孝西泽孝利椎名真树
Owner YUPO CORP
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