CN1757572A

CN1757572A - Unseal retaining and excellent reseal lid for sealing container

Info

Publication number: CN1757572A
Application number: CNA2005100959688A
Authority: CN
Inventors: 加川清二
Original assignee: KAGAWA ATSUYUKI
Current assignee: KAGAWA ATSUYUKI
Priority date: 2004-08-30
Filing date: 2005-08-29
Publication date: 2006-04-12
Also published as: KR20060050763A; TW200616856A

Abstract

A container sealing cap (2) comprises a tissue layer (204), a crimp plastic layer (201) and a local-removable layer (25), while the tissue layer (204) is arranged lower than the crimp plastic layer (201) and sealed on a container (1). The cap (2) is provided with a protrusion (21) on periphery edge, a couple of first half-cut portions (23a, 23b) at upper side of the protrusion (21) and a couple of second half-cut portions (27a, 27b) provided at lower side and extended from the first half-cut portions (23a, 23b). The local-removable layer (25) is arranged between the first and second half-cut portions.

Description

The seal of vessel lid of Kaifeng retentivity and resealability excellence

Technical field

Lid retentivity and resealability excellence, that be suitable for the container of instant food etc. the present invention relates to break a seal.

Background technology

Accommodate the lid of the container of the such instant food of cup instant noodles or instant parched flour, preferably when Kaifeng, pour hot water easily into, can encapsulate maintenance about 3 minutes simultaneously easily.In order when breaking a seal, to pour hot water easily into, need the lid in fully curling Kaifeng, maintenance Kaifeng state.In addition, in order to be easy to seal, the sealing again (flap portion) that needs lid combines with residual of lid or vessel easily, with encapsulation state maintenance flap portion again.

Retentivity about Kaifeng, the applicant formerly, as Figure 17 and shown in Figure 180, proposed for carrying out leak free lid 2 at the upper end of the vessel 1 of accommodating content lip portions 1a, it has the protrusion 21 of Kaifeng usefulness, be located at Kaifeng and tear initial point 22a with the both sides of

protrusion

21,22b, from respectively tearing

initial point

22a, 22b is to the Kaifeng of the linearity of tearing direction extension half cut part (half cut) 23a, 23b, to stop to use half cut part 24a with word shape of U in fact or circular-arc the tearing that becomes convex towards forming to tearing direction, 24b (WO2004/106189).

Shown in Figure 19 (the D-D section of Figure 18), lid 2 is for example to be made of the polyethylene layer 210 and the sealing layer 211 of PBT thin layer 201, bonding coat 202, the polyethylene layer 203 of extruding lamination, tissue layers 204, bonding coat 205, the polyethylene layer 206 that pushes lamination, PET thin layer 207, the black layer 208 of light-proofness, bonding coat 209, extruding lamination in order from upper face side.Each Kaifeng connects the polyethylene layer 203 of PBT thin layer 201, bonding coat 202 and extruding lamination with half cut

part

23a, 23b, arrives one one of tissue layers 204 (thickness of tissue layers 204 about at least 30%).

Therefore, if on draw back envelope with protrusion 21, as shown in figure 20, lid 2 is torn with half cut

part

23a, 23b along a pair of Kaifeng, can form banded flap portion 3.After pouring hot water under the state of pull-up flap portion 3, if seal cap 3 again, lateral edges 3a, the 3b engaging of

lateral edges

2a, 2b that the hot water of lid 2 is poured into mouthful and banded flap portion 3, all seal cap 3 again.

But known, because this lid 2 keeps (dead hold) property to pay layer having tissue layers 204 as static, the therefore rising deficiency of flap portion 3 sometimes.For this reason, the applicant is in order to ensure the rising of enough flap portions 3, as Figure 21～shown in Figure 23, the thermosealed lid 2 with static retentivity at the upper end of the vessel 1 of accommodating content lip portions 1a has been proposed, mainly has PBT thin layer 201 in order from the outside, tissue layers 204 and sealing layer 211, form protrusion 21 on one end of its outer edges, have and tear starting point 22a from the both sides that are formed on

protrusion

21,22b, half cut part 23a along the direction extension of following side direction Kaifeng, 23b and be located at local easily peel ply 25a on the outside of

protrusion

21,25b (WO2005/009868).

Shown in Figure 23 (the E-E section of Figure 22), lid 2 for example is made of PBT thin layer 201, bonding coat 202, tissue layers 204, bonding coat 205, PBT thin layer 206, light-proofness China ink layer 208, bonding coat 209 and sealing layer 211 in order from upper face side.Upper face side at bonding coat 202 is provided with local easily peel ply 25a, 25b.Each Kaifeng connects sealing layer 211, bonding coat 209, light-proofness China ink layer 208, PBT thin layer 206, bonding coat 205 with

half cut part

23a, 23b from following side, arrives the part (thickness of tissue layers 204 about at least 30%) of tissue layers 204.

Therefore, if on draw back envelope with protrusion 21, as shown in figure 24, tissue layers 204 is torn with half cut

part

23a, 23b along two Kaifeng,

easy peel ply

25a, 25b in the part simultaneously, PBT thin layer 201 disengaging tissue layers 204.Therefore, flap portion 3 is made of total layer of portion 31 and crimpiness film section 32a, the 32b of central authorities.After pouring hot water under the state of pull-up flap portion 3, if seal cap 3 again, lateral edges 3a, the 3b engaging of

lateral edges

2a, 2b that the hot water of lid 2 is poured into mouthful and banded flap portion 3, the seal cap 3 again.

But, because crimpiness film section 32a, the 32b at the two ends of flap portion 3, constitute by PBT film with big crimpiness, so flap portion 3 single-piece crimpiness are also high, only lateral edges 3a, the 3b of

lateral edges

2a, 2b by engaging lid 2 and banded flap portion 3 are difficult to definitely seal cap 3 again.

Summary of the invention

, the objective of the invention is to for this reason, provide a kind of have keep the required enough static retentivities of Kaifeng state, can carry out simultaneously failure-free again leak free, be suitable for the lid of the container of instant food etc.

At above-mentioned purpose, the present inventor is through in-depth study, found that, (a) upper and lower surface at lid is provided with half cut part, if form the local stripping portion of peeling off the crimpiness plastic layer simultaneously, utilize the big crimpiness of flap portion, can realize excellent Kaifeng retentivity, by with remain in vessel on the hot water of lid pour engaging of mouthful edge part into, can realize excellent resealability, (b) is even after in integral body breaks a seal lid to the way in addition, if peel off big crimpiness plastic layer from the opposition side of the flap portion that obtains, also can suppress curling of flap portion, form sealing state again, finish the present invention thus.

Promptly, seal of vessel lid according to the 1st embodiment of the present invention, have tissue layers, crimpiness plastic layer, local easily peel ply, compare with described crimpiness plastic layer, described tissue layers is formed on downside, be sealed on the container, it is characterized in that: have, be located at protrusion on the neighboring, be located at a pair of the 1st half cut part of the both sides of described protrusion side located in the above with in the mode of from the way of described the 1st half cut part, extending below a pair of the 2nd half cut part of side, in addition, the easy peel ply in described part be located at the described the 1st and the 2nd half cut part between.

With in the lid, preferred in this seal of vessel, described the 1st half cut part has the degree of depth that surpasses described tissue layers, and described the 2nd half cut part has the degree of depth that arrives the easy peel ply in described part.

With in the lid, preferred in this seal of vessel, each comfortable approaching described the 2nd half cut part place of described the 1st half cut part is towards outside bending.

With in the lid, preferred, described crimpiness plastic layer is made of the polybutylene terephthalate film in this seal of vessel.

, preferred in this seal of vessel with in the lid, begin to have crimpiness plastic layer, tissue layers, bonding coat, easily openable plastic layer and sealing layer from upper face side, the easy peel ply in described part is located on the described bonding coat.Preferably, the easy peel ply in described part be positioned at the top of described bonding coat or below, or be positioned at the face identical with described bonding coat.Preferably, in the both sides of the easy peel ply in described part,, plastics (for example polyethylene) thin layer is set not expose the mode of tissue layers in release surface.

With in the example of lid, the 2nd half cut part is near the 1st half cut part in seal of vessel of the present invention, circular-arc extension.Especially preferred the 2nd half cut part is from the curved slot of the 1st half cut part, the slight gap of the being separated by circular-arc extension in ground.

Seal of vessel lid according to the 2nd embodiment of the present invention, has tissue layers, the crimpiness plastic layer, local easily peel ply, compare with described crimpiness plastic layer described tissue layers is formed on more downside, be sealed on the container, it is characterized in that: the 1st and the 2nd protrusion that possesses position on the diagonal line that is located at the neighboring, half cut part with the following side that is located at described the 2nd protrusion, in addition, the described relatively half cut part of the easy peel ply in described part is located at central side, and then by on draw described the 1st protrusion and described lid peeled off to midway from container, after forming flap portion, if on draw described the 2nd protrusion and utilize the part that the easy peel ply in described part will contain described crimpiness plastic layer to peel off from described lid, then seal described flap portion in fact again.

The 1st seal of vessel lid of the present invention, pour the portion of tearing that mouth engage, the stripping portion of peeling off the part of high crimpiness plastic layer into owing to having the flap portion that obtains of Kaifeng and the hot water on the lid, so can utilize the hot water of the Kaifeng retentivity of excellence of high crimpiness formation and lid to pour the resealability of mouthful edge part and the excellence that engages formation of the edge part of flap portion into simultaneously.Therefore, the mode that can the time be easy to pour into hot water with Kaifeng remains on the state of abundant rising with flap portion, in addition, only by flap portion is turned back to original position, just can engage fully with lid when insulation, can keep sealing state more really.

The 2nd seal of vessel lid of the present invention, because only by from a side protrusion integrally breaks a seal lid to the way, peel off high crimpiness plastic layer from the opposition side of the flap portion that obtains simultaneously, just can suppress curling of flap portion, so after pouring hot water into, can form sealing state more easily really.

Description of drawings

Fig. 1 is the lid of expression according to one embodiment of the invention, (a) be birds-eye view, (b) being the birds-eye view of half cut part above the expression, (c) is the ground plan of the half cut part below the expression, (d) is the birds-eye view of the state of the flap portion that forms of 180 ° of expansion Kaifeng of expression.

Fig. 2 is the A-A amplification profile of Fig. 1.

Fig. 3 is the B-B amplification profile of Fig. 1.

Fig. 4 is the amplification profile of the X part of presentation graphs 2.

Fig. 5 is the C-C section-drawing of Fig. 4.

Fig. 6 is the amplification profile of other layer formation of expression lid.

Fig. 7 is illustrated in Kaifeng to be mounted on behind the lid of the Fig. 1 on the cup instant noodles container block diagram of leak free state again.

Fig. 8 is illustrated in Kaifeng to be mounted on behind the lid of the Fig. 1 on the cup instant noodles container block diagram of leak free state again.

Fig. 9 is the lid of representing according to another embodiment of the present invention, (a) is birds-eye view, (b) is the birds-eye view that the state of the flap portion that expands Kaifeng formation is spent in expression 180.

Figure 10 is the lid of expression according to another other embodiment of the present invention, (a) is birds-eye view, (b) is expression 180.The birds-eye view of the state of the flap portion that expansion Kaifeng forms.

Figure 11 is the lid of expression according to another other embodiment of the present invention, is the birds-eye view that expression is mounted on the state on the circular instant parched flour container (a), (b) is its birds-eye view.

Figure 12 is that expression will be mounted on the birds-eye view of the state on the square instant parched flour container according to the lid of another other embodiment of the present invention.

Figure 13 is the lid of expression according to another other embodiment of the present invention, (a) is the birds-eye view that expression is mounted on the state on the circular instant parched flour container, (b) is expression 180.The birds-eye view of the state of the flap portion that expansion Kaifeng forms.

Figure 14 is the birds-eye view of expression according to the lid of another other embodiment of the present invention.

Figure 15 is the lid that is illustrated in the Figure 14 that mounts on the cup instant noodles container, (a) be to represent partly to break a seal lid, the lateral plan of the state that raises for pouring, (b) be the lid that Kaifeng is decontroled in expression, half turns back to the lateral plan of the state of original state, (c) be the crimpiness plastic film layers of expression by the opposition side of Kaifeng lid, the lateral plan of the state of the lid in hermetic unit Kaifeng again.

Figure 16 is the birds-eye view of expression according to the lid of another other embodiment of the present invention.

Figure 17 is the block diagram of expression one example lid in the past.

Figure 18 is the birds-eye view of the lid of expression Figure 17.

Figure 19 is the D-D section-drawing of Figure 18.

Figure 20 is the block diagram of the state in expression lid Kaifeng of being mounted on the Figure 17 on the container.

Figure 21 is the block diagram of another example of expression lid in the past.

Figure 22 is the birds-eye view of the lid of expression Figure 21.

Figure 23 is the E-E section-drawing of Figure 22.

Figure 24 is the block diagram of the state in expression lid Kaifeng of being mounted on the Figure 21 on the container.

Among the figure: 1-container (body), 2-lid, 2a, 2b-hot water is poured the edge part of mouth into, 21-Kaifeng protrusion, 22a, the 22b-otch, 23a, 23b, 26a, 26b, 26a ', 26b '-the 1st half cut part, 24a, 24b-tears and stops to use half cut part, 25,25a, the local easily peel ply of 25b-, 27,27a, 27b-the 2nd half cut part, 28,28 '-mark, 29a, the bending seam of 29b-the 1st half cut part, 201-crimpiness plastics (PBT) thin layer, 202,205, the 209-bonding coat, 203,206, the 210-polyethylene layer, the 204-tissue layers, 207-rigidity plastics (PBT) layer, 208-light-proofness China ink layer, 211-sealing layer, 3-flap portion, 3a, the edge part of 3b-flap, the total layer portion of 31-, 32,32a, the part that 32b-is made of crimpiness plastic film layers (and tissue layers), 121-peels off and uses protrusion, 122-コ word shape joint-cutting, the 123-otch, the exfoliated resin of 125-, 127-the 3rd half cut part, 221-peels off and uses protrusion, 222-to be located at the half cut part of peeling off with on the protrusion.

The specific embodiment

Below, with reference to the structure of description of drawings lid of the present invention, but special version only otherwise in advance, for Figure 17～identical position, position shown in Figure 24, additional phase with cross reference number.Therefore, here with reference to the explanation of Figure 17～lid shown in Figure 24.

[1] structure of lid

(1) the 1st lid

Fig. 1 represents the 1st lid of the present invention.Be mounted on the lid 2 on the cup instant noodles container 1, have: be located at the pair of notches 22a, the 22b that break a seal with on the both sides of protrusion 21; Extend to the Kaifeng direction from pair of

notches

22a, 22b, from the way at a pair of the 1st half cut part (constituting) of a 29a, 29b bending by

parallel portion

23a, 23b and rake 26a, 26b; The 2nd half cut part 27a, the 27b that extend obliquely from the crease of the 1st half cut part.Between rake 26a, the 26b of the 1st half cut part and the 2nd half cut

part

27a, 27b, there are local easily peel ply 25a, 25b.The neighboring of the lid 2 that intersects at the straight line with the terminal part that links the 2nd half cut

part

27a, 27b is provided with mark 28,28.As Fig. 1 (b) and (c), the 1st half cut

part

23a, 26a and 23b, 26b are formed on the upper face side of lid 2, and the 2nd half cut

part

27a, 27b are formed on the following side of lid 2.

In Fig. 2 and example shown in Figure 3, lid 2 is made of the polyethylene layer 210 and the sealing layer 211 of the polyethylene layer 206b of the polyethylene layer 206a of the polyethylene layer 203 of crimpiness plastics (PBT) thin layer 210, bonding coat 202, extruding lamination, tissue layers 204, extruding lamination, bonding coat 205, extruding lamination, rigidity plastics (PBT) layer 207, light-proofness China ink layer 208, bonding coat 209, extruding lamination.The 1st half cut

part

23a, 26a and 23b, 26b above lid 2, connect crimpiness plastics (PBT) thin layer 201, bonding coat 202, polyethylene layer 203, tissue layers 204 and polyethylene layer 206a, arrive bonding coat 205.But, the portion of tearing is formed under the jagged situation, the 1st half cut

part

23a, 26a and 23b, 26b also can finish at one one of tissue layers 204 (thickness of tissue layers 204 about at least 30%).In addition, the 2nd half cut

part

27a, 27b side below lid 2 connects polyethylene layer 210, bonding coat 209, light-proofness China ink layer 208, rigidity plastics (PBT) layer 207 and the polyethylene layer 206b of sealing layer 211, extruding lamination, arrives bonding coat 205.

In example shown in Figure 4, between a pair of

polyethylene layer

206a, 206b between tissue layers 204 and the rigidity plastics thin layer 207, form bonding coat 205, the part of bonding coat 205 becomes local easily peel ply 25b.Local easily peel ply 25b, as shown in Figure 5, the fissility resin 125 with point-like is evenly distributed in the structure on the bonding coat 205.But local easily peel ply also is not limited to this, also can be the upper face side of bonding coat 205 or below side, the fissility resin bed of film like coating.

Fig. 6 represents another formation of lid 2 of the present invention.In this example, local easily

peel ply

25a, 25b are as the part formation of the bonding coat 202 between a pair of polyethylene layer 203a, the 203b that are located between crimpiness plastic film layers 201 and the tissue layers 204.Therefore, the parallel portion of the 1st half cut part (not shown), upper face side from lid 2, connect crimpiness plastic film layers 201, polyethylene layer 203a, bonding coat 202, polyethylene layer 203b and tissue layers 204, arrive bonding coat 205,

rake

26a, 26b in addition connect crimpiness plastic film layers 201 and polyethylene layer 203a from the upper face side of lid 2, arrive knitting layer 202.Other the 2nd half cut

part

27a, 27b, side below lid 2, connect sealing layer 211, polyethylene layer 210, bonding coat 209, light-proofness China ink layer 208, rigidity plastics thin layer 207, polyethylene layer 206, bonding coat 205, tissue layers 204 and polyethylene layer 203b, arrive knitting layer 202.

Therefore, as shown in Figure 7, if on draw back envelope with protrusion 21, lid 2 is peeled off from the upper end lip portions 1a of container 1,

parallel portion

23a, 23b along the 1st half cut part tear, if arrive

intersection point

29a, 29b, by the 2nd half cut

part

27a, 27b and local easily

peel ply

25a, 25b, than tissue layers 204 more the part of upper face side separate with the part of specific rigidity plastics (PET) thin layer 207 more following sides.Because parallel portion 23a, the 23b of the 1st half cut part penetrate into polyethylene layer 206a from crimpiness plastic film layers 201, therefore cut off rigidity plastics thin layer 207 below it etc. easily.Therefore, the hot water on the residual lid 2 is poured mouth into and is had

complete edge part

2a, 2b, and flap portion 3 also has

complete edge part

3a, 3b simultaneously.As shown in Figure 8 because only edge part 2a, the 2b by pushing lid 2 and edge part 3a, the 3b of flap portion 3 just can engage fully, so can be really seal cap 3 again.

In addition, on the zone of the easy peel ply 25a in part, 25b, owing in the both sides of the total layer of portion 31 of flap portion 3, only adhere to the crimpiness part 32a, the 32b that constitute by crimpiness plastic film layers 201 and tissue layers 204, so the crimpiness of flap portion 3 is very big in fact.So under the state of original state of Kaifeng lid 2, cup instant noodles container 1 has the opening of enough pouring hot water into.So, lid 3 of the present invention is all excellent aspect Kaifeng retentivity and resealability two.

(2) the 2nd lids

The 2nd lid 2 shown in Figure 9 is except that parallel portion 23a, the 23b of the 1st half cut part and the 2nd half cut

part

27a, 27b roughly are positioned on the straight line, identical in fact with the 1st lid.In this routine lid 2, by on draw back envelope with protrusion 21, can form flap portion 3 easily.

(3) the 3rd lids

The 3rd lid 2 shown in Figure 10, remove behind rake 26a, the 26b of the 1st half cut part, parallel portion 26a ', 26b ' move on, the terminal part of parallel portion 26a ', 26b ' does not arrive the neighboring of lid 2, in fact near the terminal part of parallel portion 26a ', 26b ' immediate, form U word shape or circular-arc tearing and stop with beyond half cut part 24a, the 24b, identical in fact with the 1st lid.In this structure, because as a whole, the 1st half cut part is very long, so have excellent resealability.

(4) the 4th lids

The 4th lid 2 shown in Figure 11 is the lids that are mounted on the instant parched flour usefulness container 1.This lid 2, pour interruption-forming protrusion 121 into except that having hot water with the opposition side neighboring on the diagonal line of protrusion 21 in Kaifeng, pour into beyond the otch 123 of コ word shape joint-cutting 122 that interruption-forming uses and both sides having a plurality of hot water on the protrusion 121, identical in fact with the 1st lid.28 ' expression hot water is poured the Kaifeng boundary of interruption-forming with protrusion 121 into.

コ word shape joint-cutting 122 bodies are opened in the 2003-285881 communique as the spy and to be put down in writing, and are known.Each コ word shape joint-cutting 122 is made of a pair of straight line and their circular-arc connecting part, and the peristome of the コ word of joint-cutting 122 is towards lid 2.In addition, the front end of コ word shape joint-cutting 122 is positioned at the sealing of lid 2.If on carry protrusion 121 because the part that surrounds of コ word shape joint-cutting 122 is with regard on the untouched upper end lip portions 1a that is sealed in container 1,, forms hot water and pour mouth into so lid 2 cuts off from the line part linearity of コ word shape joint-cutting 122.

(5) the 5th lids

The 5th lid 2 shown in Figure 12 is the lids that are mounted on the square instant parched flour usefulness container 1.The structure of lid 2 itself is identical with the 4th lid.

(6) the 6th lids

The 6th lid 2 shown in Figure 13 between intersection point 29a, the 29b of parallel portion 23a, the 23b of the 1st half cut part and rake 26a, 26b, forms the 2nd half cut part 27.The 2nd half cut part 27 roughly parallel portion 23a, the 23b with the 1st half cut part is vertical.Beyond it, the 6th lid is identical with the 4th lid.

In rake 26a, the 26b of the 1st half cut part, owing to compare with the peeling force on the easy peel ply 25 in part, the disruption characteristic of rigidity plastics thin layer 207, light-proofness China ink layer 208 and sealing layer 211 significantly improves, so, just partly cause peeling off of easy peel ply 25 in the zone that surrounds by two

rake

26a, 26b and the 2nd half cut part 27.Because mainly the part 32 that is made of crimpiness plastic layer 201 becomes the root of flap portion 3, so flap portion 3 has big crimpiness.Therefore, this lid 2 has excellent Kaifeng retentivity and resealability.

In this example, rake 26a, the 26b of the 1st half cut part are very short, but because the local easily width of peel ply 25 of

rake

26a, 26b decision, therefore can be according to the requirement of the crimpiness of flap portion 3, length and the angle of inclination of

suitable decision rake

26a, 26b.

(7) the 7th lids

The 7th lid 2 shown in Figure 14, on the neighboring on the diagonal line, have Kaifeng and use protrusion 221 with peeling off with protrusion 21, peeling off with on the protrusion 221, can definitely carry out the half cut part of peeling off 222 at the easy peel ply 25 in part and be formed on side below the lid 2.In this example, local easily peel ply 25 roughly extends to the position nearby of the mark 28 of central authorities, but the local easily end of peel ply 25 does not limit.The local easily position in lid 2 of peel ply 25 can be Fig. 2 or position shown in Figure 3.

Shown in Figure 15 (a), with protrusion 21, peel off lid 2 to mark 28 in the last Kaifeng of carrying from container 1, erect the flap portion 3 of generation, after pouring hot water into, if unclamp hand, then shown in (b), flap portion 3 will turn back to original position, but because static retentivity forms the original state in Kaifeng a little.Therefore, if on carry and peeling off with protrusion 221, peel off the crimpiness part 35 that mainly constitutes by crimpiness plastic layer 201 and tissue layers 204 from lid 2, shown in (c), crimpiness part 35 is significantly curling, as its antagonistic force, and the 3 obvious upper end lip portions 1a of flap portion near container 1.Therefore, can pour sealing again behind the hot water easily into.Its reason is indeterminate, but can think to form by crimpiness plastic layer 201 intrinsic character.

(8) the 8th lids

The 8th lid 2 shown in Figure 16, same with the 4th lid 2 shown in Figure 11, be the lid that is mounted on the instant parched flour usefulness container 1.This lid 2 is, (a) the 1st half cut part is by from otch 22a, the 1st parallel portion 23a that 22b extends, 23b, from the 1st parallel portion 23a, the rake 26a that the front end of 23b extends, 26b, from rake 26a, the 2nd parallel portion 26a ' that the front end of 26b extends, 26b ' constitutes, (b) the 2nd half cut part 27 is from the 1st

parallel portion

23a, 23b and rake 26a, the circular-arc extension of the intersection point of 26b, (c) at the 2nd parallel portion 26a ', the slight gap of being separated by on the extended line of 26b ' ground forms U word shape or circular-arc tearing stops to use half cut

part

24a, 24b, (d) extend the 3rd half cut part 127 from the incision 123 of コ word shape joint-cutting 122 and both sides, in addition, have and the identical in fact shape of the 4th lid 2.

Small interval d is set between the 1st

parallel portion

23a, 23b and

rake

26a, 26b, and the 1st half cut part and the 2nd half cut part 27 are not communicated with.When opening the flap of lid 2 by the 2nd circular-arc half cut part 27, it mouthful is half elliptic that the hot water that is formed by the 1st

parallel portion

23a, 23b and the 2nd half cut part 27 of the 1st half cut part is poured into, even between the 1st

parallel portion

23a, 23b and the 2nd half cut part 27, have the part of no half cut part, also link smoothly.Therefore, can see attractive in appearancely that hot water pours mouth into.In addition, by the 3rd half cut part 127, lid 2 can cut off from コ word shape joint-cutting 122 and otch 123 straight lines, obviously forms hot water and pours mouth into.

[2] layer of lid constitutes

The layer formation of lid 2 of the present invention do not limit, but in example shown in Figure 2, describes for main layer.

(a) crimpiness plastic film layers

Be located at the crimpiness plastic film layers 201 in the outside of the tissue layers 204 of paying static retentivity, preferably constitute, more preferably polybutylene terephthalate (PBT) by mylar.The not only static retentivity of PBT film is good, and gas barrier and resistance to effect of heat are also excellent.In addition, even owing to also do not produce pernicious gas with burning later, so post-processing is also easy.

The thickness of PBT film is preferably in about 5～50 μ m.Make the thickness of PBT film be lower than 5 μ m and have any problem technically,, only increase the cost of lid, do not have other meaning even surpass about 50 μ m.The preferred thickness of PBT film is 10～30 μ m.

Crimpiness plastic film layers 204 preferably under the elongation state that keeps elastic recovering force, is bonded on the tissue layers 204.Thus, can pay crimpiness to flap portion 3.

(b) transparent resin coating

If on PBT thin layer 201 transparent resin coating is set, then PBT thin layer 201 absorbs fine concave-convex surface and obtains the transparency and high-resolution.Therefore, the printed layers of seeing by PBT thin layer 201 is beautiful and distinct.Transparent resin also can be water-soluble or non-water-soluble, but not with an organic solvent on this point, preferably water miscible.As water-soluble transparent resin, can enumerate polyvinyl alcohol for example, cellulose-based poly-mer.Polyvinylpyrrolidone, polyethylene glycol, polyacrylamide etc.Also can utilize modified polyvinyl alcohols such as anion, cation, acetal, also can be ethylene-vinyl alcohol copolymer, polyvinyl acetate part alkali compound etc. in addition.The polymeric level of polyvinyl alcohol is preferably below 1000.

As water-insoluble transparent resin.Can give an example acrylic resin, urethane resin, epoxy resin, polystyrene resin, the unsaturated acrylic resin of UV cured property, UV cured property beta-unsaturated esters resin, polycarbonate resin etc.

The thickness of transparent resin coating does not limit, but preferred 1～5 μ m, more preferably 2～4 μ m.If the thickness of transparent resin coating is lower than 1 μ m, the raising deficiency of the distinctiveness of printing, in addition, if surpass 5 μ m, cost height.

(c) tissue layers

Tissue layers 204 has the function of paying layer as static retentivity.

(d) rigidity plastics thin layer

Rigidity plastics thin layer 207 preferably is made of the PET film.For improving the straight line easily openable of lid 2,, preferably adopt an orientation or two different PET film of the degree of orientation as the PET film.In addition, if on rigidity plastics thin layer 207, form a plurality of parallel in fact wire traces and/or a plurality of minute aperture, can improve the straight line easily openable of lid 2.The direction of the straight line easily openable of lid 2, preferably parallel with the 1st half cut part 23a, 23b.Its thickness just can as long as suit as required to set.

(e) light-proofness China ink layer

For preventing the rotten of daylight or the ultraviolet instant food that causes, lid 2 has light-proofness China ink layer 208.The light-proofness China ink so long as contain the China ink of black such as carbon black for example or dark coloured pigment or dyestuff, is not particularly limited.Light-proofness China ink layer 208 has when burning environment is had no adverse effects, and the metal that also has simultaneously in can enough metal detector monitoring containers be the advantage of foreign matter.In addition according to circumstances, also can replace light-proofness China ink layer 208 with aluminium foil.

(f) sealing layer

The sealing layer 211 of heat seal on the lip portions 1a of the upper end of vessel 1 is made of sealing film or thermometal.Sealing film is made of polyethylene, no extended polypropylene, ionomer, polystyrene etc.This outer sealing layers 211 preferably has easy fissility.

As sealing film, can use the laminate film that for example has vinyl and low molecular weight polyethylene film.So the lamination polyethylene foil is for example sold as 760FD (eastern thunder built up membrane (strain) manufacturing).As sealing film, also can use the film that constitutes by ethylene-vinyl acetate copolymer (EVA) and poly compound in addition.In addition, also can use straight chain shape copolymer [density (JIS K6922): 0.870～0.910g/cm by the alpha-olefin of ethene and carbon number 3～18 ³, MFR (JIS K6921,190 ℃, 2.16kg load): 1～100g/10 branch], and the sealing film that constitutes of polystyrene constituent.

(g) bonding coat

Bonding coat does not limit, and for example can use amino bonding coat (RU-40, ロッ Network ペィ Application ト Co., Ltd. make).

(h) local easily peel ply

Form the local easily material of peel ply 25 (25a, 25b), be acrylic resin, amilan, alkide resin, butyral resin, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, nitrocotton.Also can add a spot of silicon, paraffin etc. as required.Easily peel ply can form by print the China ink that contains above-mentioned material on thin paper or PBT film.Local easily peel ply 25 also can form by top or following the going up that is coated on bonding coat, but the also easy fissility resin of rectangular distribution point-like in bonding coat as shown in Figure 5.Owing to local easily peel ply 25 must accurately be located with the 1st and the 2nd half cut part, so when forming the paper in reel (laminated body) of lid, preferably, utilize method making such as intaghlio printing by mating with the printed layers of tissue layers or plastic sheeting.

As mentioned above, with reference to description of drawings the present invention, but the present invention is not limited to this, in the scope that does not break away from aim of the present invention, can carry out numerous variations.Position in the layer of for example local easily peel ply as long as a side who peels off has high crimpiness, can be positioned at any place.In addition, as long as the local easily size of peel ply is suitable definite just passable according to desired crimpiness.The leaning angle of other the 1st half cut part and the 2nd half cut part is as long as suit to determine just can according to the crimpiness of flap portion and the relation of easy fissility.

Claims

1. a seal of vessel lid has tissue layers, crimpiness plastic layer, local easily peel ply, compares with described crimpiness plastic layer described tissue layers is formed on more downside, is sealed on the container, it is characterized in that possessing:

Be located at the protrusion of neighboring;

In the both sides of described protrusion, a pair of the 1st half cut part of side located in the above;

Be located in the mode of from the way of described the 1st half cut part, extending below a pair of the 2nd half cut part of side,

The easy peel ply in described part be located at the described the 1st and the 2nd half cut part between.

2. seal of vessel lid as claimed in claim 1 is characterized in that:

Described the 1st half cut part has the degree of depth that surpasses described tissue layers, and described the 2nd half cut part has the degree of depth that arrives the easy peel ply in described part.

3. seal of vessel lid as claimed in claim 1 or 2 is characterized in that: each comfortable approaching described the 2nd half cut part place of described the 1st half cut part is towards outside bending.

4. as any one described seal of vessel lid in the claim 1～3, it is characterized in that: described crimpiness plastic layer is made of the polybutylene terephthalate film.

5. as any one described seal of vessel lid in the claim 1～4, it is characterized in that: begin to have crimpiness plastic layer, tissue layers, bonding coat, easily openable plastic layer and sealing layer from upper face side, the easy peel ply in described part is located on the described bonding coat.

6. seal of vessel lid as claimed in claim 5 is characterized in that: the easy peel ply in described part be positioned at the top of described bonding coat or below, or be positioned at the face identical with described bonding coat.

7. seal of vessel lid as claimed in claim 6 is characterized in that: the both sides at the easy peel ply in described part are provided with plastic film layers.

8. as any one described seal of vessel lid in the claim 1～7, it is characterized in that: the 2nd half cut part is near the 1st half cut part, circular-arc extension.

9. seal of vessel lid as claimed in claim 8 is characterized in that: the 2nd half cut part is from the curved slot of the 1st half cut part, the slight gap of being separated by and circular-arc extension.

10. a seal of vessel lid has tissue layers, crimpiness plastic layer, local easily peel ply, compares with described crimpiness plastic layer described tissue layers is formed on more downside, is sealed on the container, it is characterized in that:

Possess the 1st and the 2nd protrusion of position on the diagonal line that is located at the neighboring and be located at the half cut part of the following side of described the 2nd protrusion,

The described relatively half cut part of the easy peel ply in described part is located at central side, and then by on draw described the 1st protrusion and described lid peeled off to midway from container, after forming flap portion, if on draw described the 2nd protrusion and utilize the part that the easy peel ply in described part will contain described crimpiness plastic layer to peel off from described lid, then seal described flap portion in fact again.