CN105151494A

CN105151494A - Multistrand sealing anti-explosion plastic zipper used on plastic packaging bag

Info

Publication number: CN105151494A
Application number: CN201510604616.4A
Authority: CN
Inventors: 段永平; 范为祎
Original assignee: SHANGHAI SUNBRIGHT BAG MAKING MACHINE CO Ltd; Jinggangshan Gyy Industry Co Ltd
Current assignee: Hangzhou Sotry Automatic Control Tech Co ltd
Priority date: 2015-09-22
Filing date: 2015-09-22
Publication date: 2015-12-16
Anticipated expiration: 2035-09-22
Also published as: CN105151494B

Abstract

The invention relates to a multistrand sealing anti-explosion plastic zipper used on a plastic packaging bag. The multistrand sealing anti-explosion plastic zipper comprises a slider, upper concave and convex sealing strands, lower concave and convex sealing strands, and an easily tearable opening part, wherein the slider is matched with the upper concave and convex sealing strands, the slider and the upper concave and convex sealing strands are positioned on the upper part of the zipper, and the easily tearable opening part is positioned on the lower part of the zipper. The multistrand sealing anti-explosion plastic zipper is characterized in that the lower concave and convex sealing strands are arranged in the middle of the zipper, the distance between the upper concave and convex sealing strands and the bottom of a heat-seal part is A, the distance between the bottom of the heat-seal part and the lower concave and convex sealing strands is B, the distance between the bottom of the heat-seal part and the easily tearable opening part is C, and A is greater than B, and C is greater than A. According to the multistrand sealing anti-explosion plastic zipper, the multiple concave and convex sealing strands are adopted, and the positions of the concave and convex sealing strands are specially treated, so that the easily tearable opening part at the lower part of the zipper has small possibility of cracking, and therefore, a consumer obtains safe guarantee.

Description

Be used in the multiply sealed explosion-proof plastic fastener on plastic packaging bag

Technical field

The invention belongs to packing technique field, be specifically related to a kind of multiply sealed explosion-proof plastic fastener be used on plastic packaging bag.

Background technology

Plastic fastener is in the past sub-thread sealed plastic slide fastener (Fig. 5), because before being less than in customer's hand, easily openable mouth place cannot open, see easily openable mouth place, run off to prevent the object of splendid attire, when filling object or carrying, the sub-thread place of sealing can pop (Fig. 6) by object, easily openable mouth place bottom slide fastener can be popped simultaneously, produces waste product.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, provide a kind of novel multiply sealed explosion-proof plastic fastener be used on plastic bag, overcome the deficiency of plastic fastener in the past.

The present invention includes foxy, upper male and female sealing stock, lower male and female sealing stock and easily openable mouth place, foxy and upper male and female seal stock and match, both are positioned at the top of slide fastener, and the below of slide fastener is easily openable mouth place, it is characterized in that: in the middle part of slide fastener, be provided with lower male and female sealing stock; If the distance bottom upper male and female sealing stock and heat-sealing place is A, the distance sealing stock bottom heat-sealing place with lower male and female is B, is C with the distance at easily openable mouth place bottom heat-sealing place, then A is greater than B and C is greater than A.

Furtherly, described lower male and female sealing stock has two strands, and two gangs of lower male and female sealing stock next-door neighbours are arranged.

Beneficial effect of the present invention: owing to have employed multiple male and female sealing stock, and carried out special processing to the position of male and female sealing stock, the easily openable mouth below slide fastener is not easily popped, and customer will obtain safe guarantee.

Accompanying drawing explanation

Fig. 1 a is section drawing of the present invention;

Fig. 1 b is easily openable mouth place enlarged drawing in Fig. 1 a;

Fig. 2 is perspective view of the present invention;

Fig. 3 is the partial cross section figure that zipper fabrication of the present invention becomes sack;

Fig. 4 is that the present invention manufactures sack, the partial cross section figure of contingent situation when filling object or carrying;

Fig. 5 is zipper segment section drawing and major ingredient welded section figure in the past;

Fig. 6 is that the situation of sack generation when filling object or carrying made by slide fastener in the past;

Fig. 7 manufactures shaping sack.

Detailed description of the invention

The present invention is further illustrated below in conjunction with accompanying drawing.

See shown in Fig. 1 a, Fig. 1 b, Fig. 2, Fig. 3 and Fig. 7, the preferred embodiments of the present invention comprise slippery fellow 1, upper male and female sealing stock 2, first time male and female sealing stock, 3, second time male and female sealing stock 4 and easily openable mouth place 5.Foxy and upper male and female seal stock and match, and both are positioned at the top of slide fastener, and the below of slide fastener is U-shaped, and it is easily openable mouth place, with the easily openable mouth of acute angle, are provided with first time male and female sealing stock, second time male and female sealing stock in the middle part of slide fastener; First time male and female sealing stock, second time male and female sealing stock are disposed adjacent.In order, male and female seal the distance bottom stock and heat-sealing place is A, the distance sealing stock with first time male and female bottom heat-sealing place is B, be C with the distance at easily openable mouth place bottom heat-sealing place, then require that A is greater than B and C is greater than A, A is greater than the pulling force that B makes lower male and female seal stock will to alleviate suffered by upper male and female sealing stock, and C is greater than A and can ensures that easily openable mouth is in after male and female sealing stock pops and can not rupture at once simultaneously.Heat-sealing place in the present embodiment is slide fastener and upper slice major ingredient 7, the place that bottom sheet major ingredient 8 connects, also i.e. weld 6.Also show through explosion-proof impact test repeatedly simultaneously; when the restriction of above-mentioned distance makes filling object or carries; first impact lower male and female sealing stock; see Fig. 4; impact upper male and female sealing stock again, so just protect easily openable mouth place 5 and can not pop, for greater safety; add male and female sealing stock 4 in the present embodiment, form two strands of male and female sealing stocks.

Claims

1. be used in the multiply sealed explosion-proof plastic fastener on plastic packaging bag, comprise foxy, upper male and female sealing stock, lower male and female sealing stock and easily openable mouth place, foxy and upper male and female seal stock and match, both are positioned at the top of slide fastener, the below of slide fastener is easily openable mouth place, it is characterized in that: in the middle part of slide fastener, be provided with lower male and female sealing stock; If the distance bottom upper male and female sealing stock and heat-sealing place is A, the distance sealing stock bottom heat-sealing place with lower male and female is B, is C with the distance at easily openable mouth place bottom heat-sealing place, then A is greater than B and C is greater than A.

2. multiply sealed explosion-proof plastic fastener according to claim 1, is characterized in that: described lower male and female sealing stock has two strands, and two gangs of lower male and female sealing stock next-door neighbours are arranged.