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Labeled molded object obtained by in-mold labeling and in-mold label

An in-mold forming and labeling technology, applied in synthetic resin layered products, instruments, layered products, etc., can solve the problems of labels falling off and not being able to be reused.

Active Publication Date: 2007-12-05
YUPO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, with this technology, the label is not completely attached to the molded body, so this technology has the disadvantage that the label will fall off naturally
In addition, if a large amount of adhesive is used to enhance adhesion, the adhesive will remain on the molded body after separating the molded body from the label, and there is a disadvantage that it cannot actually be reused.

Method used

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  • Labeled molded object obtained by in-mold labeling and in-mold label
  • Labeled molded object obtained by in-mold labeling and in-mold label

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0078] Examples, comparative examples, and test examples are given below to describe the present invention in more detail.

[0079] The materials, amount, ratio, operation, etc. shown below can be appropriately modified within the scope not exceeding the spirit of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below.

[0080] Table 1 summarizes the resin compositions used in the production examples of the present invention.

[0081] Table 1

[0082] Material name

preparation example 1

[0083] (Preparation Example 1) Preparation of surface treatment agent

[0084] In a reactor equipped with a reflux condenser, a thermometer, a dropping funnel, a stirring device and a gas introduction pipe, 500 parts by weight of diallylamine hydrochloride (60% by weight aqueous solution) and 13 parts by weight of acrylamide ( 40% by weight aqueous solution) and 40 parts by weight of water, and the temperature in the system was increased to 80°C while being filled with nitrogen. Under stirring, 30 parts by weight of the polymerization initiator ammonium persulfate (aqueous solution with a concentration of 25% by weight) was added dropwise over 4 hours through a dropping funnel. After the dropping, the reaction was continued for 1 hour to obtain a viscous light yellow liquid. Take 50 g of this liquid substance and pour it into 500 ml of acetone to produce a white precipitate. The precipitate was filtered and thoroughly washed twice with 100 ml of acetone, and then vacuum dried to o...

manufacture example 1

[0088] (Manufacturing example 1) Manufacturing 1 of base layer A

[0089]After kneading the thermoplastic resin composition a with an extruder set at 230°C, it is supplied to an extrusion die set at 250°C, extruded into a sheet shape, and then cooled by a cooling device to obtain the product No stretch film. The unstretched sheet was heated to 140°C and stretched 4 times in the longitudinal direction. After kneading the thermoplastic resin c with an extruder set at 250°C, it was extruded into a sheet, and then laminated on the back side of the above-mentioned 4-fold stretched film. In addition, the thermoplastic resin composition d was set at 250 After kneading in an extruder at ℃, extruded into a sheet shape, and then laminated on the surface of the above-mentioned 4-fold stretched film to obtain a laminated film with a three-layer structure. Then, the laminated film of the three-layer structure was cooled to 60°C, heated again to about 140°C using a tenter dryer, and stretched 1...

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PUM

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Abstract

A labeled molding (E) obtained by in-mold labeling which comprises a molding (D) and, attached thereto, an in-mold label (C) comprising a base layer (A) comprising a thermoplastic resin and a heat-sealing layer (B) comprising a heat-sealing resin and a water-soluble binder, characterized in that even when the labeled molding (E) is immersed in 40 DEG C water for 4 days, the in-mold label (C) does not separate from the molding (D). This labeled molding (E) combines label adhesion with suitability for delabeling.

Description

Technical field [0001] The present invention relates to an in-mold body with a label and a label for in-mold molding used for manufacturing the same. More specifically, the present invention relates to a label for in-mold molding (C) and a labeled in-mold body (E) containing a base layer (A) and a heat seal layer (B), the base layer (A) containing a thermoplastic resin , The labeled in-mold molded body (E) has the in-mold molding label (C) on the molded body (D), and the in-mold molding label (C) and the molded body ( D) has good adhesion, and the labeled in-mold molded body (E) has excellent detachability under specific conditions. Background technique [0002] Molding of polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyamide, polycarbonate, polystyrene, etc. The product has light weight, strong drop resistance, impact resistance, etc. Compared with glass and ceramics, this kind of molded produ...

Claims

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Application Information

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IPC IPC(8): B29C49/24B32B27/00G09F3/10
Inventor 小池弘饭田诚一郎山中昌月
Owner YUPO CORP
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