JP3263893B2 - A bag with a jaw having a tearing means - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a male / female bite claw type jaw.
The present invention relates to a synthetic resin bag having an upper portion of the jig which can be torn along a longitudinal direction of the jig.

[0002]

2. Description of the Related Art In a bag made of synthetic resin, a resealable jaw is provided at a site to be opened, and an upper part of the jaw is provided with a planned tear line which allows the jaws to be torn along the longitudinal direction. Japanese Patent Publication No. 46-22679, Japanese Utility Model Publication No. 52-18254, Japanese Unexamined Patent Publication No. 2-205559, and the like.
It is well known as disclosed in JP-A-2-269658 and JP-B-5-66861.

[0003]

The V-shaped cut notches provided at both ends of the tear line disclosed in each of the above publications have wide side plates for bonding both sides of the bag body.
V-shaped cut with a length shorter than the width of the side seal so as to be located in the inside of the side seal.

[0004] In the case of a notch in which a V-shaped cut is made with a short length in the wide side seal as described above, the airtightness of the bag body before the tear line is torn,
Watertightness is ensured, but when a V-shaped cut notch is provided in an extremely narrow side seal that performs welding and fusing at the same time, it is cut beyond the narrow side seal width, and it is a wide side seal. However, when a notch having a length exceeding the width is provided, the inside and outside of the bag communicate with each other via the notch, and the airtightness and watertightness of the bag are not ensured.

Further, in the bag disclosed in the above publication, when the release of the zipper open after opening tear tear scheduled line, between tear scheduled line below after tearing the zipper upper film Is gripped with a fingertip as a gripping piece, and the bite of the male and female bite claw is released by applying a pulling force to the left and right, but this right and left pulling force concentrates on the end of the jaw tool and its surroundings, Since this is repeatedly performed, the bag is broken from the end of the jaw and a weak portion around the end. This is especially true for very narrow side seals.

An object of the present invention is provided with a snap zipper into the opening proposed site, the top of the zipper is, a bag that has a tearable along the longitudinal direction of the zipper, the ends of the tear planned portion In the bag body provided with a notch, airtightness of the bag body,
This is to ensure watertightness and to reinforce the end of the jaw to prevent the bag from being broken from the end of the jaw and its peripheral portion.

[0007]

The gist of the present invention to achieve the above object is to provide a bag with a jaw with a notch in which the upper part of the jaw is located at an end of a portion to be torn.
In the bag body which can be torn along the longitudinal direction of the jaw tool, the notch is used to bond the bonding portions on both sides of the bag body.
Length approximately equal to the width or length exceeding the bonding width of the bonding part
So that it surrounds the periphery of this notch
A point-bonded portion with a predetermined width of muscle bonding for reinforcing action near the end of the jaw tool is provided.

[0008] A point-bonded portion by streak bonding with the predetermined width.
Below the expected tear line,
Adjust the straight line distance to the holding
It has an adhesive portion that is equal to the inside of the upper edge of the
You.

[0009] A point-bonded portion by streak bonding with the predetermined width
Below the expected tear line,
Adjust the straight line distance to the holding
Adhesive part located closer than the inner edge of the upper part
are doing.

[0010]

According to the above construction, the peripheral portion of the notch is provided.
By a point bonding portion due to muscle adhesion of a predetermined width, the bag both
Even if the notch width of the adhesive part on the side (side seal width) is narrow and equal to or exceeds this width,
Even if it is a wide side seal and a notch with a length exceeding the width is provided, the inside and outside of the bag does not communicate with each other via this notch, and the airtightness and watertightness of the bag are ensured,
The linear distance between the snap zipper open- gripping portion, the adhesive portion above than equal to or over the edge inside said point bonded portion with the point bonded portion on the inner side from the edge below the tear will line located near the tear scheduled line It tore at the time of release of the zipper open after opening, receiving and dispersing the force pulling to the left and right gripper for release opening zipper, or actively
Receiving, directly to breakage of the end portion and the peripheral portion thereof snap zipper
It acts to prevent contact and indirectly .

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a bag made of synthetic resin, 2 is an adhesive portion (side seal portion) on both sides of the bag 1, 3 is a jaw,
Reference numeral 4 denotes a scheduled tear line on the upper part of the jaw 3 that enables tearing along the longitudinal direction of the jaw 3. For example,
Grooves or score lines as shown in FIGS. 2 and 3 are suitable.

A notch 5 is provided at an end of the tear line 4. The notch 5 may be a V-shaped cut or a slit (not shown) as shown, but the length thereof is substantially equal to the bonding width of the bonding portion 2 or the length of the bonding portion 2.
The length exceeds the bonding width of In the case of a tearing device utilizing the properties of the uniaxially stretched film, the position of the scheduled tearing line 4 is determined only by the location of the notch.

[0013] Then, this peripheral portion of the notch 5 Roh
In this case, a point adhesive portion (partial adhesive portion) 6 is provided to insulate the switch 5 from the inside of the bag body and to directly and indirectly reinforce the vicinity E of the end of the jaw 3. In addition, the reinforcement of the vicinity E of the end portion of the jaw 3 is different depending on the setting mode of the point bonding portion 6. However, in the case of the bag with the jaw, a pinhole at the time of bag-making or use is not provided. It is desirable that the portions of F1 to F3, which easily cause the bag breakage, be reinforced in a manner described later.

The point bonding portion 6 is a streak bond having a predetermined width provided so as to surround the peripheral portion of the notch 5 across the tear line 4 at the peripheral portion of the notch 5.
You . An upper end of the point bonded portion 6 is close to the upper end of the bag body 1, or has a contact <br/> attachment part that overlaps the upper end of the bag body 1.

Further, in addition to the isolation from the inside of the bag body, the point bonding portion 6 for reinforcing the vicinity E of the end portion of the jig 3 has the following configuration. When releasing the zipper 3 open after opening tore scheduled line 4 tearing, as shown in Figure 5, is gripped with the fingertips over the film of the zipper 3 as zipper open- gripping unit 7, the right and left The bite of the male and female bite nails is released by applying a pulling force to the female.

The gripping points for gripping by the fingertips the zipper open- gripping unit 7 is generally the central portion P1 to as shown in Figure 4 is shifted a little to the left or right from the central portion P1 Position P2.

[0017] Therefore, in the lower than expected line 4 tearing said point bonded portion 6, straight line distance A1, A2 or zipper open- gripping part 7 with the gripping point of the central portion P1 of the zipper open- gripping part 7 Linear distances B1 and B2 from the grip point at a position P2 slightly displaced to the left or right from the center P1
Has an adhesive portion 6a that is equal to the inside Q of the upper edge of the point adhesive portion below the predetermined tearing line 4.

The point bonding portion 6 has a tear line 4
In a more downward, the central portion P1 of the zipper open- gripping part 7
The straight line distance B1, B2, the tear will of the gripping point of the straight line distance A1, A2 or position displaced a little from the central portion P1 to one of the right and left zipper open- gripping portion 7 P2 of the gripping point The bonding portion 6a of A1> A2 and B1> B2 located closer to the point bonding portion upper edge inner side Q below the line 4 may be used.

The linear distance A between the zipper open- gripping part 7
1, A2 or B1, B2,
For more adhesive portion 6a of the lower point bonded portion on the inner side from the edge Q and more equally or on edge inside said point bonded portion located near A1> A2, B1> B2, the zipper open <br/> release It is preferable that they are partially connected by an adhesive line having substantially the same linear distance from the grip portion 7.

Since the present invention is configured as described above, before the tear line 4 as shown in FIG. 1 is torn , the streak bonding of a predetermined width applied to the peripheral portion of the notch 5 is performed.
Since the notch 5 and the inside of the bag are separated by the point bonding portion 6, the bonding portions 2 (side seal portions) on both sides of the bag 1 are narrow, and the notch 5 having a width equal to or exceeding this width is used. Even if a notch with a length exceeding the width of a wide adhesive portion (side seal portion) is provided, the inside and outside of the bag do not communicate with each other via the notch 5. The airtightness and watertightness of the bag 1 are ensured.

Further, the zipper of the straight line distance A1, A2 or B1, B2 and open- gripping unit 7, equal to the point bonded portion on the inner side from the edge Q of lower than the tear will line 4 or the point bonded portion on the rim inner Q than is situated near the A1> A2, B1> B2 tear adhesive portion 6a of the lower than expected line 4, as shown in Figure 5 after opening tear tear scheduled line 4, release opens the zipper the use gripper 7 grips with the fingertips, zipper when open release gripping unit 7 to release the zipper 3 open by pulling the right and left, left and right tension of the zipper open- gripping part 7 snap zipper 3 Is absorbed before reaching the end of the jig, and in addition, the concentration force acting on the adhesion part 6a is dispersed and reduced, thereby preventing the point adhesion part 6 and the end of the jig 3 and the surrounding area from being broken, and It acts to reinforce the vicinity E of the end.

The point bonding portion 6 formed by streaking with a predetermined width is
Below the scheduled tear line, the gripper for releasing the jaw
7 with a point below the scheduled tear line.
Has an adhesive portion 6a that is equal to the inside of the upper edge of the
By making the left and right pulling force equal,
6a and the upper edge of the point bonding portion below the tear line
It is dispersed to the inside Q
When the adhesive bond 6 is below the tear line,
The straight line distance between the tool release grip 7 and the tearing line
Positioned closer to the lower point than the inner edge Q
To be torn due to having an adhesive portion 6a
Pull left and right on the inside Q of the upper edge of the point bonding part below the line
Before the influence of the force
The force is received by 6a.

The latch receiving this action of absorbed before reaching the left and right tension of the gripping portion 7 release opens the zipper on the end of the zipper 3 by the adhesive portion 6a, the state naturally close to the bonding portion 6a is a point
The linear distance between the jaw release grip 7 and the
Take it as a continuous line as shown
Doing so increases the dispersion effect.

[0024]

As described above, according to the present invention, the opening schedule
Comprising a zipper at the site, the upper portion of the zipper is in the bag which is the tearable along the longitudinal direction of the zipper, the adhesive width of the adhesive portion of the bag body sides to the ends of the tear planned portion the notch is substantially equal to or longer provided, isolates the internal pouch in the peripheral portion of the notch, and occlusal Gutan unit
Since the structure is provided with a point bonding part for reinforcing the vicinity, the bonding part on both sides of the bag body is narrow, and even if it is a notch equal to or exceeding this width, a wide bonding part Even if a notch with a length exceeding that width is provided,
Airtight bag body, together with the watertight is secured, the end portion and the peripheral direct its zipper, it is indirectly reinforced, zipper pull pinholes or zipper open- gripping portion during bag manufacturing the right and left the open <br/> the ends of the zipper by pulling force when discharge preventing breakage of the weaker portion of its periphery, has the advantage of extending the service life of the zipper with bags, in particular It becomes possible to provide a bag with a jaw tool having a tearing means for a side seal having an extremely narrow bonding width such as fusion bonding.

[Brief description of the drawings]

FIG. 1 is a front view of a bag of the present invention.

FIG. 2 is a sectional view taken along line CC of FIG.

FIG. 3 is a sectional view taken along line DD of FIG. 1;

FIG. 4 is below the gripping point and tearing line when the jaw is released
Straight line with the inside of the upper edge and the lower part
Illustration of distance-related configuration

5 is a perspective view of the zipper open release state of the present invention bag

[Explanation of symbols]

1 bag 2 bonded portion (side sealing portions) 3 zipper 4 tear scheduled line 5 notch 6 points adhesive portion (portion bonded portion) bonded portion below the 6a tear scheduled line 7 zipper open- gripping portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 33/00 B65D 33/25

Claims (3)

(57) [Claims] The upper part of the jaw of the bag body with the jaw is torn.
In the bag body which can be torn along the longitudinal direction of the jig by the notch located at the end of the expected place, the notch is substantially equal to the bonding width of the bonding portion on both sides of the bag body.
Length or a length exceeding the bonding width of the bonding part.
Around the periphery of this notch
A bag body with a zipper having a tearing means, wherein a point bonding portion is provided by streaking with a predetermined width for reinforcing the vicinity . 2. Point bonding by streaking of the predetermined width.
The part below the expected tear line is the grip for releasing the jaw.
Adjust the straight line distance to the holding
It has an adhesive part that is equal to the inside of the upper edge of the int adhesive part
A bag with a jaw having the tearing means according to claim 1. 3. Point bonding by streaking the predetermined width.
The part below the expected tear line is the grip for releasing the jaw.
Adjust the straight line distance to the holding
Adhesive part located closer than the inner edge of the upper part
An articulation tool having a tearing means according to claim 1.
Bag.