JP4920380B2 - Plastic bag body - Google Patents

Description

  The present invention relates to a synthetic resin bag body provided with a slider for opening and closing a re-openable / closable male and female bite type chuck provided at an opening of the bag body.

  A synthetic resin bag body comprising two body film on the front and back, side seals on the left and right sides, and a male and female bite type chuck that is opened and closed by a slider at an opening is well known.

In the conventional slider, the inner guide for opening and closing the chuck is located on the end surface of the slider body on the chuck closing end side. Therefore, at the closed end of the chuck, the inner guide is in contact with the side seal portion and is located between the male and female claws of the chuck, and can not be completely engaged to the chuck end, and there is a gap between the inner guide and the chuck end, This gap impairs airtightness. Further, at the open end of the chuck, the slider comes into contact with the side seal portion, and the slider protrudes to the inside of the bag body from the side seal width. For this reason, the opening width of the chuck is shortened by the dimension that the slider protrudes, and there is a problem that the inclusion cannot be easily put in and out.
JP 2001-130594 A JP-A-2-242748

  An object of the present invention is to provide a synthetic resin bag body with a slider that can ensure air-water tightness and easily take in and out inclusions.

  The present invention for solving the above-mentioned problems is a male-female occlusion type chuck comprising two body films on the front and back sides, side seals applied to the left and right sides, and opening / closing operation by a slider in the opening as described in claim 1 In order to open and close the chuck, the inner guide provided on the slider is formed at a central portion in the sliding direction of the slider so as to be inclined in the chuck closing direction. An upward inclined guide was formed, and at the closed end of the chuck, the slider was lifted through the inner guide by the inclined guide, the inner guide was removed from the chuck, and the closed end of the chuck was engaged to eliminate the gap. It is characterized by.

  According to a second aspect of the present invention, in the synthetic resin bag body according to the first aspect, the side seal on the open end side of the chuck is formed with a cutout portion into which the slider moved to the open end of the chuck is inserted.

  The synthetic resin bag body according to any one of claims 1 to 2, wherein an easy peel tape is provided on the inside of the bag from the position of the chuck.

  According to the present invention, when the slider is moved to the closed end of the chuck, the slider is lifted via the inner guide by the upward inclined guide formed at the closed end of the chuck, the inner guide is removed from the chuck, and the chuck end is separated from the chuck. Air / water tightness is ensured because the male and female bite completely. Also, at the open end of the chuck, the slider moved to the open end of the chuck is immersed in the notch formed in the side seal on the open side of the chuck, so that the slider protrudes from the side seal width to the inside of the bag body. The chuck opens over the entire width, and has the effect that the inclusion can be easily taken in and out. In addition, by providing an easy peel tape on the inside of the bag from the chuck position, it is possible to obtain light shielding, dust proofing, and the effect of preventing the contents from flowing out. Therefore, it is possible to identify whether or not the bag is in an unopened state.

  The best mode for carrying out the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a synthetic resin bag made of two back body films and provided with side seals 2a and 2b on the left and right sides. 4 is provided.

  In the present invention, an inner guide 6 provided on the slider 5 for opening and closing the chuck 4 is formed at the center of the slider 5 in the sliding direction so as to be inclined in the closing direction of the chuck 4. An upward inclined guide 7 is formed on 4a.

  The closed end 4a of the chuck 4 and the inclined guide 7 are located within the range of the width B1 of the side seal 2a on the closed end 4a side of the chuck 4, and the inclined guide 7 presses the end of the chuck 4 with ultrasonic waves. As a result, an upward inclination is obtained.

  Further, according to the present invention, the side seal 2b on the open end 4b side of the chuck 4 is formed with a notch 8 into which the slider 5 moved to the open end 4b of the chuck 4 is immersed. For example, when the width B2 of the solid seal of the side seal 2b is 15 mm, the notch 8 is formed by setting the width B3 of the solid seal 2c on the open end 4b side of the chuck 4 to 7 mm. Thereby, the notch part 8 with a width of 8 mm is obtained, and the slider 5 having a total length of about 7 mm can be immersed in the notch part 8.

  Further, in the present invention, in addition to the above configuration, an easy peel tape 9 is provided in the bag body from the position of the chuck 4.

  The operation of the present invention having the above structure will be described. In FIG. 1, A shows a state in which the slider 5 is moved to the closed end 4 a of the chuck 4, B shows a state in which the slider 5 is moved in the middle of the longitudinal direction of the chuck 4, and C shows the slider 5. Shows a state in which it is moved to the open end 4 b of the chuck 4.

  Therefore, in the state A in which the slider 5 is moved to the closed end 4 a of the chuck 4, the inner guide 6 that is inclined in the closing direction of the chuck 4 is formed at the center of the sliding direction of the slider 5. Since it is located within the range of the width B 1 of the side seal 2 a on the closed end 4 a side, it slides upward by the inclined guide 7 to lift the slider 5, and the inner guide 6 is removed from the chuck 4. As a result, the closed end 4a of the chuck 4 is engaged with the male and female claws, and the gap at the chuck closed end 4a of the slider 5 is eliminated to ensure complete air-water tightness. Therefore, conventionally, the air / water tight seal under the chuck, which is formed above the side seal 2a on the closed end 4a side of the chuck 4 in order to cover the gap at the chuck closed end of the slider 5 and maintain the air / water tightness, is unnecessary.

  Further, in the state C in which the slider 5 is moved to the open end 4 b of the chuck 4, the slider 5 enters the notch 8 within the range of the width B 2 of the side seal 2 b on the open end 4 b side of the chuck 4. As a result, the slider 5 moved to the open end 4b of the chuck 4 is held within the range of the width B2 of the side seal 2b, and the slider 5 does not protrude to the inside of the bag body, and the chuck 4 extends over the entire width. It can be opened and the inclusions can be easily put in and out.

  Further, by providing the easy peel tape 9 on the inside of the bag from the position of the chuck 4, in addition to the above-mentioned effects, the effects of light shielding, dust proofing, and preventing the outflow of contents can be obtained, and the easy peel welding is once peeled off. Then, since it does not usually re-adhere, it can be identified whether or not the bag is in an unopened state, and tampering can be prevented.

  As described above, in the present invention, the inner guide 6 provided on the slider 5 is formed at the center of the slider 5 in the sliding direction so as to be inclined in the closing direction of the chuck 4, and the inclined end 4 a of the chuck 4 is inclined upward. By forming the guide 7, when the slider 5 is moved to the closed end 4 a of the chuck 4 and the chuck 4 is closed, the chuck end is completely engaged with the male and female without any gap, so that air-tightness can be secured. Since the slider 5 moved to the open end 4a of the chuck 4 is immersed in the cutout portion 8 in the side seal 2b on the open end 4b side of the slider 4, the slider 5 is positioned so as to protrude inside the bag body from the width of the side seal 2b. The chuck 4 opens over its entire width, and the contents can be easily taken in and out, and an easy peel tape 9 is provided on the inside of the bag from the position of the chuck 4. The Rukoto, shading, dustproof, leakage of the contents, to prevent tampering, is obtained by solving the problems with conventional slider synthetic resin bag body has.

  The present invention can be applied to both the flat bag type and the stand type of the bag body.

The figure which shows the principal part of the bag body opening part of this invention Perspective view of slider Fig. 2 arrow view Figure 2 arrow view Fig. 2 arrow view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Synthetic resin bag 2a Side seal 2b Side seal 3 Opening part 4 Chuck 4a Chuck closed end 4b Chuck open end 5 Slider 6 Inner guide 7 Inclined guide 8 Notch 9 Easy peel tape

Claims (3)

  In a synthetic resin bag body comprising two body film, front and back, side seals on the left and right, and a male and female bite type chuck that is opened and closed by a slider at the opening, provided on the slider to open and close the chuck The inner guide is inclined at the center of the slider sliding direction in the chuck closing direction, and an upwardly inclined guide is formed at the chuck closing end. A synthetic resin bag, wherein the slider is lifted through the guide and the inner guide is removed from the chuck so that the closed end of the chuck is engaged to eliminate the gap.   The synthetic resin bag body according to claim 1, wherein a notch portion into which the slider moved to the open end of the chuck is inserted is formed in the side seal on the open end side of the chuck.   The synthetic resin bag according to any one of claims 1 to 2, wherein an easy peel tape is provided in the bag from the position of the chuck.

Images