JPS61284418A - Manufacture of molded vessel - Google Patents

Abstract

PURPOSE:To obtain easily a molded vessel whose quality and commodity value are high, by a method wherein a deformation based on extension and shrinkage to be applied to a sheetlike base material at a molding stage of the same is absorbed and the sheetlike base material having a picture pattern through which the picture pattern in a predetermined form is expressed in the molded vessel is used. CONSTITUTION:The title method is to use a sheetlike base material which absorbs a deformation base on extension and shrinkage to be applied to the sheetlike base material, which is a molding material, at a molding stage and possesses a picture pattern through which the picture pattern in a predetermined and well-regulated form is expressed in only a molding vessel. The sheetlike base material is mainly constituted of a unit material of a film or composite film made of synthetic resin, as for the picture pattern, though it may be applied to either the surface or back of the film made of synthetic film, which is molding raw materials, in case of the sheetlike base material composed of the composite film, it is desirable to constitute the title method so that the picture pattern lies on the inside of the outside film.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a molded container using a sheet-like base material having a pattern as a molding material.

[Prior Art] A molded container using a sheet-like base material having a picture pattern as a molding material requires stretching of the sheet-like base material,
Shrinkage is often involved, and the well-ordered pattern on the sheet-like base material appears distorted on the molded container, resulting in an unsightly appearance and a factor that lowers the product value.

[Means for Solving the Problems] The method for manufacturing a molded container of the present invention includes a molding method that involves stretching and shrinking the sheet-like base material having the picture pattern, that is, a vacuum forming method, In a method of obtaining a molded container by a molding method such as a compression molding method or a deep drawing molding method, the pattern on the sheet-like base material absorbs the deformation due to the expansion and contraction that the sheet-like base material undergoes during the molding step. It uses a picture pattern.

That is, in the method for manufacturing a molded container of the present invention, the sheet-like base material, which is the molding material, absorbs the deformation caused by expansion and contraction that occurs during the molding stage, and a pattern with a predetermined orderly shape appears for the first time in the molded container. This method utilizes a sheet-like base material having a picture pattern to be obtained.

Therefore, in the method for manufacturing a molded container of the present invention, a sheet-like base material having a deformed pattern that offsets the deformation due to expansion and contraction that is applied to the sheet-like base material, which is a raw material for molding, during the molding step of the molded container to be obtained is used. Since the sheet-like base material is used, the molding means for molding the sheet-like base material having a specific pattern, the shape and size of the molded container obtained from the sheet-like base material, etc. .

This is determined in advance according to the picture pattern.

The sheet-like base material of the present invention is mainly composed of a single synthetic resin film or a composite film, and the pattern is not attached to either the front or back side of the synthetic resin film that is the raw material for molding. However, in the case of a sheet-like base material made of a composite film, it is preferable that the pattern is present on the inner surface of the outer film.

[Operations and effects of the present invention] The method for producing a molded container of the present invention includes a molding method that involves stretching and shrinking a molding raw material made of a sheet-like base material, that is, a vacuum forming method, a pressure forming method, and a deep drawing method. A molded container is obtained by molding the sheet-like base material using a molding method such as It is said to be a transformed pattern that can only be expressed in an orderly manner when it undergoes expansion and contraction.

Therefore, in the method for manufacturing a molded container of the present invention, sheet-like base materials having different patterns must be prepared depending on the molding means used and the shape and size of the molded container to be obtained. However, since the desired product, the molded container, has an orderly pattern without distortion, it is easy to obtain molded containers of high quality and high commercial value.
It is something that is effective.

Claims (1)

[Claims] A method for obtaining a molded container comprising a bottom and a peripheral wall rising from the periphery of the bottom by molding a sheet-like base material having a picture pattern using a molding method that involves stretching and shrinking the sheet-like base material. , as the sheet-like base material,
Molding characterized by using a sheet-like base material having a picture pattern that absorbs the deformation caused by the expansion and contraction that the sheet-like base material undergoes during the molding step, and that allows a picture pattern of a predetermined shape to be expressed in the molded container. Method of manufacturing containers.