CN101391673A

CN101391673A - Single slice plastic bottle cap

Info

Publication number: CN101391673A
Application number: CNA200710046065XA
Authority: CN
Inventors: 韩明; 王士春; 邱诚韡; 施舒扬
Original assignee: ZIRI PACKAGE CO Ltd SHANGHAI
Current assignee: ZIRI PACKAGE CO Ltd SHANGHAI
Priority date: 2007-09-17
Filing date: 2007-09-17
Publication date: 2009-03-25

Abstract

The utility model discloses a single-sheet plastic bottle cap; a plurality of blades 3 are arranged on a loop that is close to the bottom inside an anti-theft ring 2 in the cap 1, thickness Delta of a connection part between the anti-theft ring 2 and the blades 3 is controlled between 0.25 and 0.45 mm. Compared with the prior art, the single-sheet plastic bottle cap has following remarkable advantages: as the thickness Delta of the connection part between the anti-theft ring 2 and the blades 3 is controlled between 0.25 and 0.45 mm, the blades can be easily turned over when the bottle cap is led into a bottle opening, thus lowering the resistance when leading the bottle cap into the bottle opening, avoiding the phenomenon of high and deflected caps, greatly improving racking performance and lowering defective cap ratio.

Description

Single-piece plastic bottle cap

Technical field

The invention belongs to a kind of bottle cap, particularly to the improvement of Bottle cap structure.

Background technology

Anti-theft bottle cap in the market, its theft-prevention structure are generally fold type and two kinds of structures of hook-type.

The theft-prevention structure of selling off formula is the retaining ring that blocks bottleneck by the blade that stretches out from the anti-theft ring inboard, and anti-theft ring is stayed on the bottleneck to reach theft-proof purpose.This flanging theft-prevention structure is being done the time spent, causes easily to turn in the blade and lose anti-theft effect, has reduced theftproof performance.

The theft-prevention structure of hook-type is the barb type bayonet socket that stretches out by the anti-theft ring inboard, blocks below the retaining ring end of bottleneck by the magnitude of interference between the internal diameter of overhead kick and the retaining ring external diameter, and anti-theft ring is stayed on the bottleneck to reach theft-proof purpose.This structure causes unfavorable conditions such as high lid, askew lid easily in the pouring process of beverage, not only influence the production loss but also reduce security of products.

Summary of the invention

The present invention overcomes the shortcoming that above-mentioned prior art exists, and provides a kind of blade that has step that stretches out from anti-theft ring to block the single-piece plastic bottle cap that the retaining ring reaches theft-proof effect.

Purpose of the present invention is realized by following technical scheme.A kind of single-piece plastic bottle cap is characterized in that, the inboard of anti-theft ring 2 is provided with several blades 3 near bottom one circle in the bottle cap 1, and the thickness δ of the junction of anti-theft ring 2 and blade 3 is controlled at 0.25～0.45mm.

The present invention compared with prior art has tangible advantage and good effect.The thickness δ of the junction of anti-theft ring 2 and blade 3 is controlled at 0.25～0.45mm, bottle cap blade when entering bottleneck can easily be overturn, reduced the resistance that bottle cap enters bottleneck, avoid producing the phenomenon of height, askew lid, improve the can performance greatly, reduced the generation of bottle cap fraction defective.

Description of drawings

1 lid, 2 anti-theft ring, 3 blades, 4 edges, 5 steps, 6 bottlenecks, 7 retaining rings.

Accompanying drawing 1 is a structural representation of the present invention.

Accompanying drawing 2 is running condition structural representations of the present invention.

Accompanying drawing 3 is accompanying drawing 2 partial enlarged drawings.

The specific embodiment

Single-piece plastic bottle cap, the inboard of anti-theft ring 2 is provided with several blades 3 near bottom one circle in the bottle cap 1, and the thickness δ of the junction of anti-theft ring 2 and blade 3 is controlled at 0.25～0.45mm.

There is an edge 4 outer, top of blade 3, and the height H of edge 4 is 0.5～1.0mm, and the thickness M of edge 4 is 0.25～0.35mm.During use, edge 4 exceeds the bottom of bottleneck 6 retaining rings 7.Edge 4 and vane tip plane have formed step 5, and during use, edge 4 is stuck in the bottom of bottleneck 6 retaining rings 7.Step 5 produces theftproof performance with 7 effects of bottleneck 6 retaining rings, and anti-theft ring 2 was stayed on the bottleneck 6 when bottle cap was opened, and played theft-proof effect.

When bottle cap is opened, anti-theft ring 2 can break away from bottleneck 6 with bottle cap 1, step 5 blocks the bottom of bottleneck 6 retaining rings 7, make blade 3 play the effect of support, edge 4 exceeds the bottom of retaining ring 7 simultaneously, can prevent that blade from inwardly overturning, blade 3 outside upsets can make edge 4 be subjected to the support of anti-theft ring 2 inwalls, the inside and outside upset of blade all is restricted, making step 5 tightly block bottleneck 6 retaining rings 7 does not allow anti-theft ring 2 break away from bottleneck 6, improved the theftproof performance of bottle cap so greatly, more more reliable than existing theft-prevention structure.Step 5 produces theftproof performance with 7 effects of bottleneck 6 retaining rings, and anti-theft ring was stayed on the bottleneck when bottle cap was opened.

Claims

1, a kind of single-piece plastic bottle cap is characterized in that, the inboard of anti-theft ring (2) is provided with several blades (3) near bottom one circle in the bottle cap (1), and the thickness δ of the junction of anti-theft ring (2) and blade (3) is controlled at 0.25～0.45mm.

According to the described single-piece plastic bottle cap of claim 1, it is characterized in that 2, there is an edge (4) outer, top of blade 3, the height H of edge (4) is 0.5～0.8mm, and the thickness M of edge (4) is 0.25～0.35mm; During use, edge (4) exceeds the bottom of bottleneck (6) retaining ring (7).

According to the described single-piece plastic bottle cap of claim 2, it is characterized in that 3, the top plan of edge (4) and blade (3) has formed step (5), during use, be stuck in the bottom of bottleneck (6) retaining ring (7).