Method of manufacturing in-mold decorative molded article

Patent metadata

Field	Value
Publication number	US-11007689-B2
Application number	US-201916255185-A
Country	US
Kind code	B2
Filing date	Jan 23, 2019
Priority date	Feb 8, 2018
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

A method of manufacturing an in-mold decorative molded article includes supplying an in-mold transfer foil to a metal mold, injecting and cooling a molding resin and taking out an molded article formed of the molding resin cooled and cured in the metal mold in which a clear layer and a transfer layer having a decorative figure in the in-mold transfer foil are integrated on the surface by opening the mold, molding the molded article integrally with a cutting portion not necessary for a target product inside the metal mold by the molding resin at an outer periphery of the product and arranging a boundary of a printing region of the clear layer in the in-mold transfer foil in the cutting portion so as to be larger than the outer periphery of the product.

First claim

What is claimed is:

1. A method of manufacturing an in-mold molded article, the method comprising:
supplying an in-mold transfer foil to a metal mold, the in-mold transfer foil including a clear layer formed in a first layer on an in-mold raw fabric that is configured by forming a mold releasing layer and a primer layer on a base material film, the clear layer having transparency and lower extensibility than the base material film, and a pattern is printed in second and subsequent layers on the in-mold raw fabric;
clamping the metal mold, injecting and cooling a molding resin, and taking out a molded article formed of the molding resin that has cooled and cured in the metal mold, wherein the clear layer and a transfer layer having the pattern in the in-mold transfer foil are integrated on a surface of the molded article by opening the mold;
molding the molded article integrally with a cutting portion inside the metal mold by the molding resin at an outer periphery of a target product, wherein the cutting portion is not necessary for the product; and
arranging a boundary of a printing region of the clear layer in the in-mold transfer foil in the cutting portion so as to be larger than the outer periphery of the product.

2. A method of manufacturing an in-mold molded article, the method comprising:
forming an in-mold transfer foil in which a clear layer is formed in a first layer on an in-mold raw fabric that is configured by forming a mold releasing layer and a primer layer on a base material film,
wherein the clear layer is formed by using curable ink, and, in second and subsequent layers on the in-mold raw fabric, a layer in which a frame pattern is formed, a non-printing region is included, and all printing layers necessary for design expression are formed,
wherein the second and subsequent layers are printed in a smaller region than a size of the molded article;
forming a cutting portion larger than a product size in an outer peripheral portion of the molded article so as to be larger than a printing region of the layer in which the frame pattern is formed so as to obtain a product shape by cutting; and
arranging the layer in which the frame pattern is formed so that a boundary of the printing region is positioned in the cutting portion.

3. The method of manufacturing the in-mold molded article according to claim 2 ,
wherein the in-mold transfer foil is formed by a screen printing method.

4. The method of manufacturing the in-mold molded article according to claim 2 , further comprising:
forming the clear layer also in regions including recognition marks and recognition lines provided in the in-mold transfer foil for positioning control between the metal mold and the in-mold transfer foil.

5. The method of manufacturing the in-mold molded article according to claim 2 , further comprising:
forming recognition marks and recognition lines in the in-mold transfer foil in the second and subsequent layers on the in-mold raw fabric for positioning control between the metal mold and the in-mold transfer foil.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Nakagawa Takashi
• Sugino Yuuki

Classifications

• B29C45/14

  incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles {(B29C45/1671 takes precedence)} · CPC title

• B29C2045/1784

  Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for · CPC title

• B44C1/105

  comprising an adhesive layer (decalcomania B44C1/16; adhesive tapes C09J7/20) · CPC title

• B29C2793/0027

  Cutting off · CPC title

• B44C1/1712

  Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive · CPC title