Fluid container, recycling method of fluid container, method for piercing cover film of fluid container, piercing jig, and method for manufacturing fluid container

A method for recycling a used fluid container, the fluid container having a hole through which a fluid is introduced and a cover film welded or bonded to the fluid container in such a manner as to cover the hole, the method comprising:

• piercing the cover film by sticking a blade body having a conical distal end into a covering area of the cover film covering the hole from the distal end of the blade body;
• refilling the fluid container with the fluid through the opening in the cover film;
• and
• sealing the opening using a sealing member.

A method for recycling a used fluid container, the fluid container having a hole through which a fluid is introduced and a cover film welded or bonded to the fluid container in such a manner as to cover the hole, the method comprising:

• forming a cut in the cover film in such a manner as to provide a cut piece supported in a cantilever manner in a covering area of the cover film that covers the hole;
• forming an opening in the cover film by causing the cut piece to hang down in the hole;
• refilling the fluid container with the fluid through the opening in the cover film;
• and
• sealing the opening using a sealing member.

A method for recycling a used fluid container, the fluid container having a hole through which a fluid is introduced and a cover film welded or bonded to the fluid container in such a manner as to cover the hole, the method comprising:

• preparing a cutting member having a blade body;
• piercing the cover film by passing the cutting member through the cover film to form a cut in the cover film by means of the blade body, wherein the blade body is shaped in such a manner as to form the cut shaped substantially identical with a cross section of the blade body in a direction perpendicular to a penetrating direction when the cutting member penetrates the cover film;
• refilling the fluid container with the fluid through the opening;
• and
• sealing the opening by a sealing member.

An apparatus for manufacturing a reusable fluid container by refilling a used fluid container with a fluid, the fluid container including a hole through which the fluid is introduced and a cover film welded or bonded to the fluid container in such a manner as to cover the hole, the apparatus comprising:

• a cutting member having a blade body, wherein the cutting member is passed through the cover film to form a cut in the cover film by means of the blade body, thereby forming an opening in the cover film, and wherein the blade body is shaped in such a manner as to form the cut substantially identical with a cross section of the blade body in a direction perpendicular to a penetrating direction when the cutting member penetrates the cover film;
• a filling device that fills the fluid container with the fluid through the opening;
• and
• a sealing device that seals the opening using a sealing member.