Lid, container with lid, combination of lid and container, and method for manufacturing lid

Abstract

A lid, a container with a lid, a combination of the lid and the container, and a method for manufacturing the lid, which are capable of suppressing moisture permeation into fibers constituting the lid and capable of bonding the container and the lid by a sealing method even when the types of resin forming a resin coating layer formed on the surface of the container are varied. The lid is formed so as to be in contact with a container having an edge, and is formed of a blank material, the blank material includes a fiber sheet including fibers formed of a paper-based material, and a resin material is attached to at least some of the fibers forming an inside of the fiber sheet.

1 . A lid formed so as to be in contact with a container having an edge, and is formed of a blank material, wherein
 the blank material includes a fiber sheet including fibers formed of a paper-based material, and   a resin material is attached to at least some of the fibers forming an inside of the fiber sheet.   
     
     
         2 . The lid according to  claim 1 , comprising:
 a joining region corresponding part that corresponds to a region joined to the container along the edge of the container; and   a lid region corresponding part that is configured by a portion inside the joining region corresponding part, wherein   the resin material is attached to at least some of the fibers forming an inside of the fiber sheet at least in a portion corresponding to the joining region corresponding part.   
     
     
         3 . The lid according to  claim 2 , comprising:
 a penetrating part that is cut from one surface to the other of the blank material, wherein   a cross section of the fiber sheet is exposed on a circumferential surface part of the penetrating part, and the resin material is exposed on at least a part of the cross section.   
     
     
         4 . The lid according to  claim 3 , comprising:
 an inclined part that has the circumferential surface part of the penetrating part as an end part and inclined upward in a direction away from the end part.   
     
     
         5 . The lid according to  claim 4 , wherein
 a density of the fibers comprising the fiber sheet in the inclined part is higher at a position closer to the end part of the inclined part.   
     
     
         6 . The lid according to  claim 3 , wherein
 the lid region corresponding part is provided with a weakened part that guides a separation position in the lid region corresponding part, and   the weakened part includes a plurality of the penetrating parts and at least one continuous part formed between at least two of the penetrating portions.   
     
     
         7 . The lid according to  claim 6 , wherein
 the continuous part has a half-cut structure.   
     
     
         8 . The lid according to  claim 6 , wherein
 the weakened part radially forms the plurality of penetrating portions around the continuous part.   
     
     
         9 . The lid according to  claim 3 , wherein
 the lid region corresponding part includes a base part having a small opening part having an opening area smaller than an opening surrounded by the edge of the container, a small lid portion that opens and closes the small opening part, and a hinge part that connects the base part and the small lid part,   the small lid part is configured to be rotatable with respect to the base part with the hinge part as an axis, and   at least a part of the penetrating portion is formed at a boundary position between an outer circumferential edge of the small lid part and an opening edge of the small opening part.   
     
     
         10 . The lid according to  claim 9 , wherein
 a knob part is provided on an upper surface side of the small lid part.   
     
     
         11 . The lid according to  claim 10 , wherein
 the knob part includes a tab member, and   the tab member is joined to the upper surface side of the small lid part.   
     
     
         12 . The lid according to  claim 9 , comprising:
 a holding structure that holds the small lid part in a state where the small opening part is opened by rotating the small lid part with respect to the base part with the hinge part as an axis.   
     
     
         13 . The lid according to  claim 9 , wherein
 an extension is formed on an outer circumferential edge of the base part, and   the base part and the extension are integrally formed of the blank material.   
     
     
         14 . The lid according to  claim 13 , wherein
 the hinge part is formed between the extension and a tip of the small lid part.   
     
     
         15 . The lid according to  claim 9 , comprising:
 a holding structure that holds the small lid part in a state where the small opening part is opened by rotating the small lid part with respect to the base part with the hinge part as an axis, wherein   a knob part is provided on an upper surface side of the small lid part,   the knob part is provided with a claw part,   an extension is formed on an outer circumferential edge of the base part, and   the extension and the claw part form the holding structure.   
     
     
         16 . The lid according to  claim 1 , wherein
 a raised part is formed.   
     
     
         17 . The lid according to  claim 1 , wherein
 at least a part of the resin material is impregnated between at least a part of the fibers.   
     
     
         18 . A container with a lid, comprising:
 the lid according to  claim 1 ; and   the container having the edge, wherein   the lid is joined to the container.   
     
     
         19 . A combination of a lid and a container, comprising:
 the lid according to  claim 1 ; and   the container having the edge.   
     
     
         20 . A method for manufacturing a lid, the method comprising:
 an immersion step of immersing a fiber sheet in an immersion liquid containing a resin material; and   a drying step of drying the fiber sheet containing the immersion liquid.   
     
     
         21 . The method for manufacturing a lid according to  claim 20 , wherein
 a shaping process of shaping the fiber sheet containing the immersion liquid is performed in a middle of the drying step or before the drying step.