CN206374309U - A kind of PET film - Google Patents

Abstract

The utility model discloses a kind of PET film, including pet layer, the pet layer laminating is provided with thickening layer, the edge of the thickening layer is heat-sealed in the pet layer, and outlet passageway is provided between the thickening layer and pet layer, and the utility model is rational in infrastructure, mainly by setting thickening layer, and outlet passageway is provided between thickening layer and pet layer, then reaching can prevent from being punctured by sharp food, the purpose that can also vacuumize.

Description

A kind of PET film

Technical field

The utility model is related to sack field, more particularly to a kind of PET film.

Background technology

PET film is usually applied to make vacuum packaging bag, first is made to have on Bag Making Machine by two layers of PET film and opens The packaging bag of mouth, then food is put into packaging bag from opening, then vacuumized and sealed on vacuum packing machine.It is right There is the food of sharp portion in being put into chicken feet etc. in packaging bag, then when being vacuumized, sharp portion, which is contradicted, arrives packaging bag Inwall, easily causes and pierces through packaging bag, so as to impact packaging for foodstuff, transport and eat.

Utility model content

The purpose of this utility model is to provide a kind of PET film, and reaching can prevent from being punctured by sharp food, can also take out The purpose of vacuum.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of PET film, including pet layer, the pet layer laminating are provided with thickening layer, the edge heat-sealing of the thickening layer Outlet passageway is provided between the pet layer, the thickening layer and pet layer.

By using above-mentioned technical proposal, thickening layer is stacked with pet layer, and its edge is sealed on pet layer, and thickening layer is improved The structural strength of packaging bag, with certain cutting resistance, the food that can prevent chicken feet etc. has sharp portion is punctured；Due to Chamber is formed between thickening layer and pet layer, but the present embodiment is provided with outlet passageway on thickening layer, so in vacuum packaging When being vacuumized on machine, the air between thickening layer and pet layer can be extracted from through hole, finally reach the mesh vacuumized 's.

Preferably, the edge of the thickening layer side is heat-sealed in the pet layer, and the outlet passageway is to pass through Wear some through holes for being opened in thickening layer.

By using above-mentioned technical proposal, when vacuumizing, gas can be extracted out of some through holes, Jin Er Realize in packaging bag to be vacuum state to a certain extent.

Preferably, the thickening layer is rectangle, and the edge on its length direction is heat-sealed in the pet layer, and institute State between edge and pet layer of the outlet passageway on the thickening layer width.

By using above-mentioned technical proposal, when vacuumizing, gas can be from the edge on thickening layer width It is extracted between pet layer, and then realizes in packaging bag to be vacuum state to a certain extent.

Preferably, a diameter of 1 ~ 1.5mm of some through holes.

By using above-mentioned technical proposal, prevent through hole too small without using vacuumizing, also avoiding through hole excessive, claw etc. Bone, which remains unchanged, to puncture packaging bag, and disclosure satisfy that above-mentioned condition in 1 ~ 1.5mm.

Preferably, the side of the pet layer towards thickening layer is laminating nylon layer.

By using above-mentioned technical proposal, nylon layer is polyamide material, and on the one hand it has certain mechanical property, body It is now abrasion resistance properties, while it is presented as chemical reagent resistance again with certain chemical property, when touching on food Also it is not easy to be corroded during additive, further prevents PET film to be punctured.

Preferably, the pet layer has cast polypropylene film layer back to thickening layer side is laminating.

By using above-mentioned technical proposal, cast polypropylene film layer is presented as heat resistance, is sterilized to food high temperature Cheng Zhong, its heat resistance is able to maintain that entirety is not deformed upon.

Preferably, it is provided with bond layer between pet layer and the cast polypropylene film layer.

By using above-mentioned technical proposal, pet layer can be bonded together by bond layer with cast polypropylene film layer.

Preferably, bond layer is provided between the pet layer and nylon layer.

By using above-mentioned technical proposal, pet layer can be bonded together by bond layer with nylon layer.

Preferably, the cast polypropylene film layer has waterproof layer back to pet layer side is laminating.

By using above-mentioned technical proposal, carried out in retort after high temperature sterilization, it is necessary to enter to food sprinkling cooling water Row cooling, and the waterproof layer set can avoid cooling water from infiltrating through inside film.

In summary, the utility model has the advantages that：One is by setting thickening layer, and in thickening layer Outlet passageway is provided between pet layer, then reaching can prevent from being punctured by sharp food, the purpose that can also vacuumize； Secondly when preventing that cold water from cooling down for that can be played by the waterproof layer of setting, water is penetrated into film.

Brief description of the drawings

Fig. 1 is the structural representation of the present embodiment；

Fig. 2 is Fig. 1 I portions enlarged drawing.

Reference：1st, pet layer；2nd, thickening layer；3rd, outlet passageway；4th, nylon layer；5th, cast polypropylene film layer；6th, glue Connect oxidant layer；7th, waterproof layer.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.Wherein identical parts identical accompanying drawing Mark is represented.It should be noted that the word "front", "rear", "left", "right", the "up" and "down" that are used below in description refer to It is the direction in accompanying drawing, word " bottom surface " and " top surface ", " interior " and " outer " are referred respectively to towards or away from particular elements geometry The direction at center.

Embodiment 1：Referring to Fig. 1 and Fig. 2, a kind of PET film, including pet layer 1 and the thickening layer for being arranged on the side of pet layer 1 2, thickening layer 2 is located at inner side when making packaging bag, directly contacts food.

Pet layer 1 has a laminar flow to prolong layer of polypropylene foil 5, cast polypropylene film 5 body of layer back to the side of thickening layer 2 is laminating It is now heat resistance, in food high temperature disinfecting process, its heat resistance is able to maintain that entirety is not deformed upon, pet layer 1 and curtain coating Carried out by bond layer 6 laminating between layer of polypropylene foil 5, bond layer 6 is epoxy resin adhesive, adhering with epoxy resin Agent has bonding force, pet layer 1 can bond together with cast polypropylene film layer 5, while between the two almost without gas Bubble；There is waterproof layer 7 back to the side of pet layer 1 is laminating in cast polypropylene film layer 5, waterproof layer 7 is polyethylene film Layer.There is one layer of nylon layer 4 towards the side of thickening layer 2 is laminating in pet layer 1, nylon layer 4 is polyamide material, bag can be prevented Pack is worn, while being also not easy to be corroded when it touches the additive on food.

Thickening layer 2 is also made up of PET material, and its area is less than pet layer 1, and it is stacked with pet layer 1, while passing through surrounding Edge is sealed on pet layer 1, and outlet passageway 3 is provided between thickening layer 2 and pet layer 1, and outlet passageway 3 is to be opened on thickening layer 2 Some a diameter of 1mm to 1.5mm through hole.The packaging with opening is first made in the present embodiment on heat sealing machine and Bag Making Machine Bag, the present embodiment be provided with thickening layer 2 side be arranged in, be put into packaging bag chicken feet etc. have sharp portion food When, thickening layer 2 can improve the structural strength of packaging bag, prevent packaging bag from being punctured by food.And carried out on vacuum packing machine When vacuumizing, the air between thickening layer 2 and pet layer 1 can be extracted from through hole, finally reach the purpose vacuumized.

Embodiment 2：A kind of PET film, is with the difference of embodiment 1, and thickening layer 2 is rectangle, thickening layer 2 Edge on length direction is heat-sealed in the pet layer 1, and outlet passageway 3 is the edge and PET on the width of thickening layer 2 Between layer 1, when being vacuumized on vacuum packing machine, the air between thickening layer 2 and pet layer 1 can be from the two of thickening layer 2 Side is extracted, and finally reaches the purpose vacuumized.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims (9)

1. a kind of PET film, including pet layer（1）, the pet layer（1）Laminating is provided with thickening layer（2）, it is characterised in that institute State thickening layer（2）Edge be heat-sealed in the pet layer（1）, the thickening layer（2）With pet layer（1）Between be provided with outlet passageway （3）.

2. a kind of PET film according to claim 1, it is characterised in that the thickening layer（2）The edge heat of side It is encapsulated in the pet layer（1）, and the outlet passageway（3）For through being opened in thickening layer（2）Some through holes.

3. a kind of PET film according to claim 2, it is characterised in that the thickening layer（2）It is rectangle, its length Edge on direction is heat-sealed in the pet layer（1）, and the outlet passageway（3）Positioned at the thickening layer（2）On width Edge and pet layer（1）Between.

4. a kind of PET film according to claim 3, it is characterised in that a diameter of 1 ~ 1.5mm of some through holes.

5. a kind of PET film according to claim 4, it is characterised in that the pet layer（1）Towards thickening layer（2）One Side is laminating nylon layer（4）.

6. a kind of PET film according to claim 5, it is characterised in that the pet layer（1）Back to thickening layer（2）Side It is laminating to have cast polypropylene film layer（5）.

7. a kind of PET film according to claim 6, it is characterised in that the pet layer（1）With cast polypropylene film Layer（5）Between be provided with bond layer（6）.

8. a kind of PET film according to claim 7, it is characterised in that the pet layer（1）With nylon layer（4）Between set There is bond layer（6）.

9. a kind of PET film according to claim 8, it is characterised in that the cast polypropylene film layer（5）Back to Pet layer（1）Side is laminating waterproof layer（7）.