CN201472828U

CN201472828U - Wrapping joint

Info

Publication number: CN201472828U
Application number: CN200920301145XU
Authority: CN
Inventors: 陈贵宁; 刘华; 伊万
Original assignee: QUANLIN PACKAGE CO Ltd SHANDONG
Current assignee: Greatview Aseptic Packaging Shandong Co Ltd
Priority date: 2009-03-09
Filing date: 2009-03-09
Publication date: 2010-05-19
Anticipated expiration: 2019-03-09

Abstract

The utility model relates to a wrapping joint comprising a first thin sheet (1), a second thin sheet (2) and a first sealing strip (10), the first thin sheet (2) and the second thin sheet (2) are respectively provided with innermost layers (16, 26) made of thermoplastic plastics contacting to food which is ready to pack and outermost layers (11, 21) made of thermoplastic plastics contacting to the outside; the innermost layer (16) at the tail end of the first thin sheet (1) and the outermost layer (21) at the head end of the second thin sheet (2) are lapped and agglutinated; the first sealing strip (10) is used for sealing the tail end of the first thin sheet (1), and is formed into a whole with the innermost layers (16, 26) of the first thin sheet (1) and the second thin sheet (2).Thus, the tail end of the first thin sheet (1) can not directly contact to the food. The joints of the two wrapping thin sheets are stably connected, so the joints can not be partly or thoroughly tackless to protect the continuance of filling production, and food in a wrapping container can not be polluted.

Description

A kind of packing joint

Technical field

The utility model relates to a kind of packing joint design, relates in particular to a kind of packing transverse joint structure.

Background technology

Aseptic packaging (Aseptic packaging) is a kind ofly to prevent that germ from entering the work programme of the packing of product in pouring process and after the can, be meant that packaged liquid food passes through the sterilization of short time before packing, then under aseptic condition promptly under all aseptic condition of packing material, packed article, packing auxiliary appliance, in aseptic environments, fill a kind of packing technique with involution.

Product after the aseptic packaging; the germ, toxin and the germ that do not contain easy breeding; do not need anti fouling composition; and packing container can prevent the secondary invasion of bacterium or germ, and its special protection performance is more effective slows down the unnecessary variation of product because of producing with air, other gas, peculiar smell and light mutual action.Even under the condition of not having refrigeration, product still may be preserved considerable time.

Packing container material in the present sterile filling, make by laminate wrapping material, this laminate wrapping material comprises by the multilayer material lamination holistic belt packing that are composited, not easily separated, wherein comprise at least: a firm supporting layer of strengthening packing container that reaches, keep liquid quality and the thermoplastic inner layer of carrying out heat sealing, between supporting layer and innermost layer innermost layer, isolation layer is arranged, starvation and sunlight and prevent that the product taste runs off, the conductive layer when also being high-frequency induction simultaneously.Herd dislike to dodge as Fig. 1 Jing An and worriedly herd that to shoot a glance at now that the polished ㄓ of mulberry reward food copies be to hold together

Come Laos and then rampant? 1,21, supporting

layer

12,22, the first viscous layers 13,23, isolation layer 14,24, the second

viscous layers

15,25,

innermost layer

16,26.

The belt packing, further be wound in the rolling packing, in the beverage products package production, the rolling packing trail and become band, banded packing are shaped to ellipticity on working direction, the ellipticity packing further are shaped to the cylindrical packages material, and dual-side is by the vertical envelope of longitudinal lap joint, and form a pipe.

Pipe is in the horizontal sealing of one end, and fills required content, and the residue of pipe is held corresponding horizontal sealing, cuts the horizontal sealing zone by cutting knife then, to form single packing container.

But,, the packing two ends after the excision need be bonded into continuous packing by the mode that seals owing to, need to have in the continuous packing part unit excision of fault at the packing production process.In pouring process, because the limited length of U.S. coil type packing, when last coil packing material uses up, the termination of the packing of next volume need be sealed into continuous packing with the tail end of last coil packing material, with the continuity of assurance can.If the undressed packing in the termination of packing are cutting edge, in sterile filling, packing directly overlap when forming horizontal joint, can expose to the content of finished product packing.And packing supporting layer 12 contains absorbing material, and as paper or cardboard, content can be inhaled in the packing, and is softening thereby packing are corroded, even danger such as leakage occurs.In addition, in aseptic packaging, isolation layer 14 contains metal, and as aluminium foil, this does not have the cutting edge of protection not contact in inclusion, must be protected with some mode, because metal pair food has negative effect.

China's utility model patent CN1272226C specification sheets discloses a kind of will being used in moulding, produce the method that first and second thin slices of pre-rennet pressure packing of the sealed package goods of dumpable food are bonded together in the perfusion and the packaging machine of seal type, each thin slice comprises at least one fiber basic unit, this fiber basic unit has first side that has covered at least one first polymeric layer, this first polymeric layer define one will with the inside face of Food Contact to be packaged, comprise that also one has covered second side of at least one the second polymer layer, this the second polymer layer define one will with the outside face of Food Contact to be packaged, described method comprise the steps: (1) by at the described inside face of described first thin slice along a predetermined direction setting, an end that keeps this first thin slice; (2) end of described second thin slice of cutting is surperficial to form cutting down; (3) the described cutting down surface with described second thin slice is stacked on the described end of described first thin slice, and the described outside face of described second thin slice contacts with the described inside face of described first thin slice simultaneously; (4) the following cutting surface with described second thin slice is adhered on the described end of described first thin slice, one joint wherein is provided, at this joint, the described inside face of described first thin slice and the described inside face of described second thin slice limit holistic, continuous inside face together.The horizontal joint of the packing that obtain by this method, because layer as " the fiber basic unit " that go up except " first polymeric layer " and " the second polymer layer " on " cutting surface down " do not have thermoplastic plastic, when engaging heat-sealing, the limited thermoplastic plastic of these layers and another sheet surface can not bondingly well be integral, in pouring process and later storage and transport process, this horizontal joint partly or entirely comes unglued easily, can have a strong impact on the continuity of production or pollute the interior food of packing container.

The utility model content

Technical problem to be solved in the utility model provides a kind of packing joint, the horizontal joint that can guarantee two packing thin slices engages firmly, can partly or entirely not come unglued, guarantee the continuity that can is produced, and the interior food of container can not polluted after forming packing container.

For solving the problems of the technologies described above, the utility model provides a kind of packing joint, comprise first thin slice and second thin slice, first thin slice and second thin slice have respectively and the innermost layer of being made by thermoplastic plastic of Food Contact to be packaged and the outermost layer of being made by thermoplastic plastic that contacts with the external world; The outermost layer overlap joint of the innermost layer of this first thin slice tail end and the second thin slice head end is also bonding; Wherein, it also comprises first sealing band of being made by thermoplastic plastic, and this first sealing band seals the described first thin slice tail end and forms one with the innermost layer of first thin slice and second thin slice.

As a kind of improvement of the present utility model, it also comprises second sealing band of being made by thermoplastic plastic, and this second sealing band seals the described second thin slice head end and forms one with the outermost layer of first thin slice and second thin slice.

As a kind of improvement of the present utility model, described first sealing band is made by one or more the material in polyethylene, polypropylene, polyamide, polyethylene terephthalate, polybutylene terephthalate, the polycarbonate.

As a kind of improvement of the present utility model, described second sealing band is made by one or more the material in polyethylene, polypropylene, polyamide, polyethylene terephthalate, polybutylene terephthalate, the polycarbonate.

The utility model compared with prior art, because this first sealing band seals the described first thin slice tail end and forms one with the innermost layer of first thin slice and second thin slice, therefore the first thin slice tail end can direct contact food, the horizontal joint of two packing thin slices engages firmly, can partly or entirely not come unglued, guarantee the continuity that can is produced, and the interior food of container can not polluted after forming packing container.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Fig. 1 is the structural representation of existing a kind of packing joint.

Fig. 2 is the structural representation of a kind of packing joint first embodiment of the utility model.

Fig. 3 is the structural representation of a kind of packing joint second embodiment of the utility model.

The specific embodiment

Shown in Figure 2 is a kind of packing joint first embodiment of the utility model, comprises first thin slice 1 and second thin slice 2, first sealing band 10.

First thin slice 1 is followed successively by by (from top to bottom) outward inward: uppermost layer 11, supporting layer 12, the first viscous layers 13, isolation layer 14, the second viscous layers 15, innermost layer 16.Uppermost layer 11, innermost layer 16 are made by thermoplastic plastic, for example: polyethylene (PE), polypropylene polyolefin such as (PP), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or the like, be preferably and select low density polyethylene (LDPE) (LDPE) for use.

Supporting layer 12 is mainly played a supporting role, and can select for use by what kraft pulp was made to have higher-strength and a lower hygroscopic food stage paper roll, according to making the needed width customization of packing container or cutting into needed width.

First viscous layer 13, second viscous layer 15 are selected thermoplastic plastic for use, for example: polyethylene (PE), polypropylene polyolefin such as (PP), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or the like, be preferably and select low density polyethylene (LDPE) (LDPE) for use.

Isolation layer 14 mainly plays the effect of oxygen barrier resistance light, can adopt metal level, and aluminium foil for example perhaps hinders the thermoplastic plastic PVAC polyvinylalcohol of light.Also can adopt in order to add light-absorbing particle or pigment the thermoplastic plastic layer, described light-absorbing particle or pigment are black pigment or or particle, for example carbon black granules that generally adopts in the packaging for foodstuff industry.

Similarly, second thin slice 2 is followed successively by by (from top to bottom) outward inward: uppermost layer 21, supporting layer 22, the first viscous layers 23, isolation layer 24, the second viscous layers 25, innermost layer 26.Uppermost layer 21, innermost layer 26 are made by thermoplastic plastic, for example: polyethylene (PE), polypropylene polyolefin such as (PP), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or the like, be preferably and select low density polyethylene (LDPE) (LDPE) for use.

Supporting layer 22 is mainly played a supporting role, and can select for use by what kraft pulp was made to have higher-strength and a lower hygroscopic food stage paper roll, according to making the needed width customization of packing container or cutting into needed width.

First viscous layer 23, second viscous layer 25 are selected thermoplastic plastic for use, for example: polyethylene (PE), polypropylene polyolefin such as (PP), polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), or the like, be preferably and select low density polyethylene (LDPE) (LDPE) for use.

Isolation layer 24 mainly plays the effect of oxygen barrier resistance light, can adopt metal level, and aluminium foil for example perhaps hinders the thermoplastic plastic PVAC polyvinylalcohol of light.Also can adopt in order to add light-absorbing particle or pigment the thermoplastic plastic layer, described light-absorbing particle or pigment are black pigment or or particle, for example carbon black granules that generally adopts in the packaging for foodstuff industry.

First sealing band 10 is made by one or more the thermoplastic material in polyethylene, polypropylene, polyamide, polyethylene terephthalate, polybutylene terephthalate, the polycarbonate.

First thin slice 2 and second thin slice 2 have respectively and the innermost layer of being made by thermoplastic plastic (16,26) of Food Contact to be packaged and the outermost layer of being made by thermoplastic plastic 11,21 that contacts with the external world; Outermost layer 21 overlap joint of the innermost layer 16 of this first thin slice, 1 tail end and second thin slice, 2 head ends is also bonding, and these first sealing band, 10 described first thin slice, 1 tail ends of sealing also form one with the

innermost layer

16,26 of first thin slice 1 and second thin slice 2.Like this, first thin slice, 1 tail end can direct contact food, and the horizontal joint of two packing

thin slices

1,2 engages firmly, can partly or entirely not come unglued, and guarantees the continuity that can is produced, and form that the food in the container can not polluted behind the packing container.

Shown in Figure 3 is a kind of packing joint second embodiment of the utility model, comprises first thin slice 1 and second thin slice 2, first sealing band 10, second sealing band 20.This embodiment is different with first embodiment to be: second sealing band 20 described second thin slice, 2 head ends of sealing also form one with the outermost layer (11,21) of first thin slice 1 and second thin slice 2.Second sealing band 20 is made by one or more the thermoplastic material in polyethylene, polypropylene, polyamide, polyethylene terephthalate, polybutylene terephthalate, the polycarbonate.

Claims

1. packing joint, comprise first thin slice (1) and second thin slice (2), first thin slice (2) and second thin slice (2) have respectively and the innermost layer of being made by thermoplastic plastic (16,26) of Food Contact to be packaged and the outermost layer of being made by thermoplastic plastic (11,21) that contacts with the external world; The innermost layer (16) of this first thin slice (1) tail end is also bonding with outermost layer (21) overlap joint of second thin slice (2) head end; It is characterized in that: it also comprises first sealing band of being made by thermoplastic plastic (10), this first sealing band (10) described first thin slice (1) tail end of sealing and with innermost layer (16,26) the formation one of first thin slice (1) and second thin slice (2).

2. the packing joint shown in claim 1, it is characterized in that: it also comprises second sealing band of being made by thermoplastic plastic (20), this second sealing band (20) described second thin slice (2) head end of sealing and with outermost layer (11,21) the formation one of first thin slice (1) and second thin slice (2).