CN210553484U

CN210553484U - Transparent high-barrier steaming-resistant composite film

Info

Publication number: CN210553484U
Application number: CN201921385702.0U
Authority: CN
Inventors: 林新土; 陈曦; 贾露; 刘运锦; 牟青英; 郑伟; 李智尧; 廖贵何
Original assignee: Xiamen Changsu Industrial Co Ltd
Current assignee: Xiamen Changsu Industrial Co Ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-05-19
Anticipated expiration: 2029-08-23

Abstract

The utility model provides a transparent high separation resistant composite film who cooks, including six range upon range of lamination layer structures that add, its lamination layer structure is top layer, printing ink layer, the first adhesive layer that cooks resistant, separation nylon composite bed, the resistant adhesive layer that cooks of second and heat-seal layer from the extroversion in proper order. The utility model provides a transparent high-barrier boiling-resistant composite film, wherein the surface layer has excellent transparency and boiling-resistant performance, and simultaneously has the decorative effect of matte and frosted; the barrier nylon composite layer has excellent barrier property, can resist high-temperature cooking, and can endow the composite film with excellent puncture resistance and strength; the first boiling-resistant adhesive layer and the second boiling-resistant adhesive layer have excellent boiling resistance; the heat sealing layer can ensure that the composite film has good heat sealing performance. Adopt the utility model provides a pair of transparent high separation resistant composite film who cooks can obtain good separation effect to still have visual advantage and color printing decoration function.

Description

Transparent high-barrier steaming-resistant composite film

Technical Field

The utility model relates to a food package complex film technical field, in particular to a transparent high-barrier composite film resistant to cooking.

Background

At present, the common sterilization mode of food is high-temperature cooking sterilization. In general, heat treatment at 121 ℃ is a necessary condition for retort sterilization at high temperature. Therefore, for high-temperature steaming sterilization, a packaging material must have high barrier property and certain steaming resistance, so that the food can be stored at normal temperature for a long term, is convenient to transport and store, and is suitable for consumption requirements of modern society. At present, aluminum foil and aluminum-plastic composite materials are adopted for packaging a plurality of foods as barrier packaging materials, although the materials can meet the requirements of cooking and barrier, the aluminum-plastic materials have large brittleness and poor flexibility and are easy to break, so that the barrier property of the packaging is damaged, namely the barrier effect on gas, liquid and other permeants is weakened, and the quality and the safety of the foods are further influenced. In addition, the food package made of the material has the defect of poor visibility, so that consumers cannot clearly see whether the contents are intact or not, and the food package is not easy to popularize.

SUMMERY OF THE UTILITY MODEL

For solving the problem mentioned in the above-mentioned background art, the utility model provides a pair of resistant compound film who cooks of transparent high separation, including six range upon range of lamination layer structures that add, its lamination layer structure is top layer, printing ink layer, first resistant adhesive layer that cooks, separation nylon composite bed, the resistant adhesive layer that cooks of second and heat-seal layer from outside-in proper order.

Further, the surface layer is a matte layer.

Further, the lower surface of the surface layer is a corona treatment surface.

Further, the first cooking-resistant adhesive layer and the second cooking-resistant adhesive layer are cooking-resistant polyurethane adhesives.

Further, the barrier nylon composite layer comprises a first nylon layer, a second nylon layer, a barrier layer, a third nylon layer and a fourth nylon layer.

Further, the upper surface of the first nylon layer is a corona treatment surface evaporated with a silicon dioxide coating; the thickness of the silicon dioxide coating is 0.1-2 mu m.

Further, the barrier layer is an EVOH layer or an MXD6 layer.

Further, the heat sealing layer is a cooking-grade cast polypropylene film.

Further, the thickness of the surface layer is 10-20 μm; the thickness of the ink layer is 0.03-2 mu m; the thickness of the first cooking-resistant adhesive layer and the second cooking-resistant adhesive layer is 3-5 micrometers; the thickness of the heat sealing layer is 30-80 mu m.

Further, the thickness of the barrier nylon composite layer is 12-30 micrometers; the thickness of the barrier layer is 1-3 mu m.

The utility model provides a transparent high-barrier boiling-resistant composite film, wherein the surface layer adopts an extinction polyethylene glycol terephthalate film which has excellent transparency and boiling-resistant performance and simultaneously has the decorative effect of matte and frosted; the barrier nylon composite layer has excellent barrier property, can resist high-temperature steaming at 121 ℃, and can endow the composite film with excellent puncture resistance and strength; the first boiling-resistant adhesive layer and the second boiling-resistant adhesive layer adopt a boiling-resistant polyurethane adhesive, so that the cooking-resistant performance is excellent; the heat sealing layer can ensure that the composite film has good heat sealing performance, is not damaged after high-temperature cooking treatment, can reduce the influence of moisture on the blocking layer, and improves the moisture resistance and the gas barrier property of the composite film. Adopt the utility model provides a pair of transparent high separation resistant composite film who cooks can obtain good separation effect, can guarantee the food quality in the packing to visual advantage and color printing decoration function still have.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of the structure of the transparent high-barrier cooking-resistant composite film provided by the utility model.

Reference numerals:

100 first nylon layer 101 silica coating 110 second nylon layer

120 third nylon layer 130 fourth nylon layer 140 first boiling resistant adhesive layer

150 second boiling-resistant adhesive layer 160 surface layer 170 ink layer

180 barrier layer 190 heat seal layer

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

FIG. 1 is a schematic view of a structure of a transparent high-barrier cooking-resistant composite film provided by the present invention; as shown in fig. 1, the utility model provides a resistant compound film who cooks of transparent high separation includes that six range upon range of adds membranous layer structures, and its membranous layer structure is top layer 160, printing ink layer 170, first resistant adhesive layer 140 that cooks, separation nylon composite bed 200, the resistant adhesive layer 150 that cooks of second and heat-seal layer 190 in proper order from outside to inside.

In specific implementation, the transparent high-barrier boiling-resistant composite film sequentially comprises a surface layer 160, an ink layer 170, a first boiling-resistant adhesive layer 140, a barrier nylon composite layer 200, a second boiling-resistant adhesive layer 150 and a heat-sealing layer 190 from outside to inside; wherein, the surface layer 160 has the transparent and boiling-resistant performance, and simultaneously, the composite film can play the decorative effect of matte and frosted; the barrier nylon composite layer 200 can ensure that the composite film has excellent barrier property to oxygen, fragrance or other pungent smells and the like and can resist high-temperature cooking; the first and second steam resistant

adhesive layers

140 and 150 have steam resistance; the heat sealing layer 190 can ensure that the composite film has good heat sealing performance, and the deterioration of the product caused by contact with substances such as water, gas and the like is avoided.

Preferably, the surface layer 160 is a matte layer.

Preferably, the lower surface of the skin layer 160 is a corona treated surface.

In specific implementation, a person skilled in the art can adopt the extinction polyethylene terephthalate film as an extinction layer, the transparent width of the extinction polyethylene terephthalate film is 10-2000 mm, the transparency is good, and the extinction polyethylene terephthalate film can bear the high temperature of 121 ℃; the lower surface of the surface layer 160 may be corona-treated to better adhere the water-based ink or the UV ink to the lower surface of the surface layer 160, thereby forming the ink layer 170.

Preferably, the first steam-resistant adhesive layer 140 and the second steam-resistant adhesive layer 150 are steam-resistant polyurethane adhesives.

In specific implementation, a person skilled in the art may use the existing high temperature and boiling resistant polyurethane adhesive as the first boiling resistant adhesive layer 140 and the second boiling resistant adhesive layer 150. Preferably, a cooking grade polyurethane adhesive disclosed in the patent name "a cooking resistant matte composite packaging film" (publication number CN204936398U) is used.

Preferably, the barrier nylon composite layer 200 includes a first nylon layer 100, a second nylon layer 110, a barrier layer 180, a third nylon layer 120, and a fourth nylon layer 130.

Preferably, the upper surface of the first nylon layer 100 is a corona treatment surface evaporated with a silicon dioxide coating 101; the thickness of the silicon dioxide coating 101 is 0.1-2 μm.

Preferably, the barrier layer 180 is an EVOH layer or an MXD6 layer.

In specific implementation, a person skilled in the art can use multilayer co-extrusion biaxial stretching to prepare the first nylon layer 100, the second nylon layer 110, the barrier layer 180, the third nylon layer 120 and the fourth nylon layer 130 into the barrier nylon composite layer 100, and the barrier nylon composite layer 100 has good barrier property, has excellent barrier property on oxygen, fragrance or other pungent smells, and can resist high-temperature steaming at 121 ℃; the upper surface of the first nylon layer 100 can be subjected to corona treatment, and the silicon dioxide coating 101 is evaporated on the corona treatment surface, wherein the thickness of the silicon dioxide coating 101 is controlled to be 0.1-2 mu m, so that the adhesive force of the ink layer 170 in a high-temperature cooking state is improved by utilizing the adsorption effect of silicon dioxide, and meanwhile, the barrier property of the composite film can also be improved; EVOH or MXD6 can be used as the barrier layer 180 of the present composite film. The first nylon layer 100, the second nylon layer 110, the third nylon layer 120, and the fourth nylon layer 130 are transparent nylon films.

Preferably, the heat seal layer 190 is a cooking grade cast polypropylene film.

In particular embodiments, one of ordinary skill in the art can use a cooking grade cast polypropylene film. The cooking-grade cast polypropylene film has excellent transparency, can resist high-temperature cooking at 121 ℃, and has good air tightness.

Preferably, the thickness of the surface layer 160 is 10 to 20 μm; the thickness of the ink layer 170 is 0.03-2 μm; the thickness of the first boiling-resistant adhesive layer 140 and the second boiling-resistant adhesive layer 150 is 3-5 μm; the thickness of the heat sealing layer 190 is 30-80 μm.

Preferably, the thickness of the barrier nylon composite layer 200 is 12-30 μm; the thickness of the barrier layer 180 is 1-3 μm.

Although terms such as barrier layer, heat seal layer, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A transparent high-barrier cooking-resistant composite film is characterized in that: the multilayer composite heat-seal adhesive comprises a six-layer laminated film structure, wherein the film structure sequentially comprises a surface layer (160), an ink layer (170), a first steam-resistant adhesive layer (140), a barrier nylon composite layer (200), a second steam-resistant adhesive layer (150) and a heat-seal layer (190) from outside to inside.

2. The transparent high-barrier cooking-resistant composite film according to claim 1, wherein: the surface layer (160) is a matting layer.

3. The transparent high-barrier cooking-resistant composite film according to claim 1, wherein: the lower surface of the surface layer (160) is a corona treatment surface.

4. The transparent high-barrier cooking-resistant composite film according to claim 1, wherein: the first boiling-resistant adhesive layer (140) and the second boiling-resistant adhesive layer (150) are boiling-resistant polyurethane adhesives.

5. The transparent high-barrier cooking-resistant composite film according to claim 1, wherein: the blocking nylon composite layer (200) is a co-extrusion nylon composite film and comprises a first nylon layer (100), a second nylon layer (110), a blocking layer (180), a third nylon layer (120) and a fourth nylon layer (130).

6. The transparent high-barrier cooking-resistant composite film according to claim 5, wherein: the upper surface of the first nylon layer (100) is a corona treatment surface evaporated with a silicon dioxide coating (101); the thickness of the silicon dioxide coating (101) is 0.1-2 mu m.

7. The transparent high-barrier cooking-resistant composite film according to claim 5, wherein: the barrier layer (180) is an EVOH layer or an MXD6 layer.

8. The transparent high-barrier cooking-resistant composite film according to claim 1, wherein: the heat sealing layer (190) is a cooking-grade cast polypropylene film.

9. The transparent high-barrier cooking-resistant composite film according to claim 1, wherein: the thickness of the surface layer (160) is 10-20 mu m; the thickness of the ink layer (170) is 0.03-2 mu m; the thickness of the first boiling-resistant adhesive layer (140) and the second boiling-resistant adhesive layer (150) is 3-5 mu m; the thickness of the heat sealing layer (190) is 30-80 mu m.

10. The transparent high-barrier cooking-resistant composite film according to claim 5, wherein: the thickness of the barrier nylon composite layer (200) is 12-30 mu m; the thickness of the barrier layer (180) is 1-3 mu m.