JP2015110450A5

JP2015110450A5 -

Info

Publication number: JP2015110450A5
Application number: JP2015019800A
Authority: JP
Filing date: 2015-02-03
Publication date: 2015-07-30
Anticipated expiration: 2033-02-27

Claims

Overlaying the inner layers of a rectangular laminate having at least an outer layer, an intermediate layer made of aluminum, and an inner layer made of a heat-adhesive resin to form a laminate on the near side and a laminate on the back side,
The front and back laminates are thermally bonded to each other at the four peripheral edges including the left edge, the right edge, the upper edge, and the lower edge in the plan view of the laminate on the front side. The left edge thermal adhesive part, the right edge thermal adhesive part, the upper edge thermal adhesive part and the lower edge thermal adhesive part,
When the tearing opening provided between the left edge thermal bonding portion and the right edge thermal bonding portion is opened in the left-right direction, the cut surface of the front and back laminates forming the tear opening is formed. It is a four-side sealed type packaging bag that creates a step in the tear opening by making the outer shell different,
The opening means comprises a left-side opening start means, a right-side opening start means, and a step forming means sandwiched between these left-side and right-side opening start means,
The step forming means includes a front-side step forming cut line formed in an outer layer of the front-side laminated body and a back-side step forming cut line formed in an outer layer of the back-side laminated body. Has
The step forming cut line on the near side includes an arcuate cut line that swells upward and converges at a single point on the right side and branches from a point on the left side, and an arcuate cut line that bulges downward.
The back-side step forming cut line has a left-right direction at a position corresponding to an interval between the arc-shaped cut line that bulges upward and the arc-shaped cut line that bulges downward. It has a single score line that progresses to
A packaging bag characterized by that.

The left-side opening start means is
Notches or scars on the left side penetrating the near side and back side laminates constituting the left edge thermal bonding part, and
Left edge heat which is a score line formed in the outer layer of the near side laminated body constituting the left edge thermal bonding portion and proceeds in the right direction from the outer edge or the vicinity of the outer edge of the left edge thermal bonding portion. A plurality of cut lines on the front left side extending so as to approach each other at a position that does not reach the inner edge of the bonded portion;
Left edge heat which is a score line formed in the outer layer of the laminate on the back side constituting the left edge thermal bonding portion and proceeds in the right direction from the outer edge or the vicinity of the outer edge of the left edge thermal bonding portion. It is a combination of a plurality of cut lines on the left side extending so as to approach at a position that does not reach the inner edge of the bonded portion,
The right side opening start means is:
A right notch or scar group penetrating the near side and back side laminates constituting the right edge thermal bonding part; and
It is a score line formed in the outer layer of the near-side laminated body constituting the right edge thermal bonding portion, and proceeds to the left from the outer edge or the vicinity of the outer edge of the right edge thermal bonding portion, and the right edge heat. A plurality of cut lines on the right-hand side that extend so as to approach each other at a position that does not reach the inner edge of the bonded portion;
It is a score line formed in the outer layer of the back side laminated body constituting the right edge thermal bonding portion, and proceeds to the left from the outer edge or the vicinity of the outer edge of the right edge thermal bonding portion, and the right edge heat It is a combination of a plurality of cut lines on the back right side that extend so as to approach each other at a position that does not reach the inner edge of the bonded portion,
The packaging bag according to claim 1.

The cut line for step formation on the near side is
It is a cut line formed in the outer layer of the front-side laminated body, and proceeds in a right direction from a portion adjacent to the plurality of cut lines on the left side of the near side toward a point on the left side of the step forming line on the near side. One cut line on the left side before
  It is a cut line formed in the outer layer of the front-side laminate, and proceeds in the left direction from a portion adjacent to the plurality of cut lines on the right side toward the right point of the step forming line on the front side. And a single score line on the right side
  The back side step forming cut line is
  One point on the left side of a single cut line provided on the back side step forming cut line from a portion adjacent to the plurality of cut lines on the back left side, which is a cut line formed in the outer layer of the laminated body on the back side A single cut line on the left side that goes to the right toward
  One point on the right side of a single cut line provided on the back side step forming cut line from a portion adjacent to the plurality of cut lines on the right side, which is a cut line formed in the outer layer of the back side laminate. Further comprising a single cut line on the right side that proceeds leftward toward
The packaging bag of Claim 2 characterized by the above-mentioned.

The single left score line is connected to the central one of the multiple left score lines,
The one cut line on the back right side is connected to one central line of the plurality of cut lines on the right side,
One center line of the plurality of cut lines on the left side, one cut line on the left side, one cut line provided on the cut line for forming a step on the back side, and one on the right side The score line of the book and the center one of the plurality of score lines on the right side are arranged so as to form the same straight line.
The packaging bag according to claim 3.

In both the front side and back side laminates, the layers arranged on the inner layer side from the intermediate layer are all composed of an unstretched film and / or an unstretched resin layer.
The packaging bag according to any one of claims 1 to 4, wherein

A synthetic resin occlusion device comprising a male member of a ridge and a female member of a ridge that mesh with each other is provided at a position facing the inner surface of the lower side packaging bag than the opening means ,
Packaging bag according to any of claims 1-5, characterized in that it comprises a resealing function by occlusion and said female member and the male member.