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Chuck tape and packaging bag with chuck tape

A clamping band and band-shaped technology, which is applied in the field of clamping bands, can solve the problems of poor forming stability of the clamping band, difficult heat sealing, shape distortion of the occlusal part, etc., to achieve good shape stability and prevent shape loss , Good effect of re-opening and closing

Inactive Publication Date: 2007-05-30
IDEMITSU UNITECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the configuration of the conventional clamping tape, as described above, it is necessary to adjust the sealing layer according to the type of the sealant layer (innermost layer) of the base film constituting the bag body, which is a layer to be thermally welded to the clamping tape. The sealing part of the clamping tape is used separately. For example, when the sealing part of the clamping tape is made of polyethylene, if the sealant layer of the bag body is made of polyethylene resin, heat sealing can be performed well, but in this sealant Difficult to heat seal when layer is polypropylene
[0008] In addition, in the clamp band having a structure in which the resin constituting the occlusal part and the resin of the sealing part shown in Patent Document 1 are formed of different resins, there is another problem, that is, the shapeability of the clamp band during manufacture. Even after molding, the molding stability is poor, and the shape of the occlusal part may be out of shape.

Method used

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  • Chuck tape and packaging bag with chuck tape
  • Chuck tape and packaging bag with chuck tape
  • Chuck tape and packaging bag with chuck tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Regarding the clamp band of the shape shown in FIG. 2, the resin constituting the sealing portion and the base portion (including the occlusal portion) is set as follows, and the resin is co-extruded using two extrusion molding machines, thereby The clamping band of the present invention is obtained.

[0087] In addition, regarding the physical properties of the resin, the melting point was measured in accordance with JIS K7121, the density was measured in accordance with JIS K7121, and the melt flow rate (MFR) was measured in accordance with JIS K7210 (190°C or 230°C, 21.18N load) To measure.

[0088] (Resin used: sealing part)

[0089] The use density is 898kg / m 3 , MFR is 3.5g / 10 minutes, melting point is the metallocene linear low-density polyethylene (α-olefin is 1-hexene. Examples 2-6 are the same) (100% by mass of the whole) with a melting point of 90°C ).

[0090] (Resin used: base part)

[0091] The use density is 900kg / m 3 . MFR is 7.0 g / 10 minutes, and ...

Embodiment 2

[0094] Except for the resin that constitutes the sealing part, the use density is 900kg / m 3 , MFR is 4.0g / 10min, melting point is 95 ℃ metallocene-based linear low-density polyethylene (100% by mass of the whole), using the same method as in Example 1, the clamping of the present invention was produced. bring.

Embodiment 3

[0096] In addition to the resin that constitutes the sealing part, the density is 900kg / m 3 , MFR is 4.0g / 10min, metallocene-based linear low-density polyethylene with a melting point of 95°C is 70% by mass of the whole, and the density is 900kg / m 3 The clamping belt of the present invention was produced in the same manner as in Example 1, except that metallocene-based linear low-density polyethylene having an MFR of 20 g / 10 minutes and a melting point of 93° C. was 30% by mass of the whole.

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Abstract

A chuck tape easily and stably manufacturable, capable of developing excellent adhesive strength irrespective of the type of the sealant layer (innermost layer) of a base film forming a bag body, and having the excellent shapability of a clamping part in manufacturing the chuck tape and a packaging bag with the chuck tape. The chuck tape (1) comprises a male member (11) and a female member (12). Band-like base parts (13) forming the chuck tape (1) comprise seal parts (14) and base body parts (15). A resin forming the base body parts (15) has a melting point higher than that of a resin forming the seal parts (14), and the resin forming the seal parts (14) contains a metallocene-based straight chain low-density polyethylene with a density of 920 kg / m<3> or less and a melt flow rate of 5.0 g / 10 min. or less by 50 wt.% or more.

Description

technical field [0001] The present invention relates to an unsealable and resealable clamping band disposed at an opening of a bag body, and a packaging bag with the clamping band having the same. Background technique [0002] Generally, as a package for packaging various items such as food or medical products, a packaging bag with a clamping belt is used, and a pair of belt-shaped clamps formed by a male member and a female member and interlocked with each other are arranged relative to the opening of the bag. The tight band (engaging member) is set to be freely openable and closable in the engaged state. [0003] In addition, as a method of manufacturing a packaging bag with a clamping band that can freely implement the opening and closing of such an opening, the following method is generally widely used. The base film forming the part is heat-sealed to the clamping band. [0004] For the resin constituting such a clamp band, the same resin as the innermost layer of the ...

Claims

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Application Information

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IPC IPC(8): A44B19/16B65D33/25
CPCB65D33/2508A44B19/16B65D33/2541Y10T24/45168B65D33/25
Inventor 田中研一片田亮南波芳典
Owner IDEMITSU UNITECH CO LTD
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