CN210477990U

CN210477990U - Straw cup seals complex film

Info

Publication number: CN210477990U
Application number: CN201921414972.XU
Authority: CN
Inventors: 曾文明; 陈灿; 吴晓龙; 吉娟; 陈政
Original assignee: Zhejiang Goldstone Packing Co ltd
Current assignee: Zhejiang Goldstone Packing Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-05-08
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to a packing field, concretely relates to straw cup seals complex film, including stacking surface printing layer, barrier layer and the interior rete of establishing in proper order, interior rete includes the heat-seal layer and is used for bearing the bearer layer on heat-seal layer, the bearer layer is located and is close to one side of barrier layer, the bearer layer is Polyethylene (PE) layer, the heat-seal layer is ethylene-vinyl acetate copolymer (EVA) layer. The utility model provides a straw cup seals complex film, PE film outward appearance is translucent, it has nontoxic, tasteless, odorless characteristics, the hygienic qualities is reliable, in addition, its melting point is low, good formability and heat seal nature have, EVA has better toughness, impact resistance and heat sealability, through forming interior rete with EVA and the compound preparation of PE, and use this interior rete in sealing the complex film, make and seal the complex film and can carry out fine heat-seal to the straw cup, thereby be favorable to the popularization and application of straw cup.

Description

Straw cup seals complex film

Technical Field

The utility model relates to a packaging material field, concretely relates to straw cup seals complex film.

Background

The straw is a general term of stem and leaf (ear) parts of mature crops, generally refers to the residual parts of wheat, rice, corn, potatoes, rape, cotton, sugarcane and other crops (generally coarse grain) after seeds are harvested, and is easy to obtain and convenient to degrade, so that the straw is gradually substituted for plastics to become a very good raw material for manufacturing containers along with the enhancement of environmental awareness of people.

But because the existing sealing film can not well seal the straw cup, the straw cup is inconvenient to carry, and the popularization of the straw cup applied to the disposable tableware is hindered to a certain extent.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that sealing membrane among the prior art can't seal the straw cup to provide a straw cup seals complex film.

In order to solve the technical problem, the utility model discloses a technical scheme does:

the utility model provides a straw cup seals complex film, includes the surperficial printing layer, barrier layer and the interior rete of establishing of stacking gradually, interior rete includes the heat-seal layer and is used for bearing the bearer layer on heat-seal layer, the bearer layer is located and is close to one side of barrier layer, the bearer layer is Polyethylene (PE) layer, the heat-seal layer is polyethylene-ethylene-vinyl acetate copolymer (EVA) layer.

Further, the thickness of the bearing layer is 20-50 μm.

Further, the thickness of the heat sealing layer is 15-30 μm.

Further, the surface printing layer is a polyethylene terephthalate (PET) layer.

Further, the thickness of the surface printing layer is 7-12 μm.

Furthermore, an ink layer is further arranged on one side, close to the blocking layer, of the surface printing layer.

Further, the barrier layer is an aluminum foil layer.

Further, the thickness of the barrier layer is 30-60 μm.

Furthermore, an adhesive layer is arranged between the surface printing layer and the blocking layer and between the blocking layer and the inner film layer.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a straw cup seals complex film, PE film outward appearance is translucent, it has nontoxic, tasteless, odorless characteristics, the hygienic qualities is reliable, in addition, its melting point is low, good formability and heat seal nature have, EVA has better toughness, impact resistance and heat sealability, through forming interior rete with EVA and the compound preparation of PE, and use this interior rete in sealing the complex film, make and seal the complex film and can carry out fine heat-seal to the straw cup, thereby be favorable to the popularization and application of straw cup.

2. The utility model provides a straw cup seals complex film, the PET film has intensity height, the rigidity is good, it is transparent, characteristics such as glossiness height, it is colourless, tasteless, nontoxic, have stronger toughness, and its tensile strength is 3 times of PC membrane, nylon membrane, impact strength is 3-5 times of BOPP membrane, there are fabulous wearability, folding endurance, resistant pinhole nature and tear resistance etc. the heat shrinkage is less, thereby can improve the heat sealability, the separation nature of packaging film material and the adhesive force of printing, in addition, the water absorption rate of PET film is low, has better water proofness, so the food that suitable packing water content is high; the aluminum foil is a soft metal film, not only has the advantages of moisture resistance, air tightness, shading, abrasion resistance, fragrance retention, no toxicity, no odor and the like, but also has elegant silvery white luster, is easy to print and process beautiful patterns and figures with various colors, has good barrier property, can be used as a packaging material to shield water vapor, air, ultraviolet rays, bacteria and the like, ensures that packaged materials are well protected, can ensure that steamed and cooked foods do not deteriorate for more than one year, has stable state at high temperature and low temperature, and has the characteristics of good mechanical property and compound adaptability. The sealing film is formed by matching PET, aluminum foil, PE and EVA, and the thickness of each layer is correspondingly set, so that the prepared straw cup sealing composite film has good heat sealing and barrier properties, and the popularization and application of the straw cup are facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 creative efforts.

Fig. 1 is a schematic structural diagram of a straw cup sealing composite membrane in embodiment 1 of the present invention.

Reference numerals:

1. a surface print layer; 2. a barrier layer; 3. an inner membrane layer; 31. a carrier layer; 32. a heat seal layer; 4. an ink layer; 5. and an adhesive layer.

Detailed Description

The following examples are provided for better understanding of the present invention, and are not limited to the best mode, and do not limit the scope and content of the present invention, and any product that is the same or similar to the present invention, which is obtained by combining the features of the present invention with other prior art or the present invention, falls within the scope of the present invention.

The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.

Example 1

As shown in fig. 1, the present embodiment relates to a straw cup sealing composite film, which includes a surface printing layer 1, a barrier layer 2 and an inner film layer 3 stacked in sequence.

Wherein, the inner membrane layer 3 includes heat-seal layer 32 and bearing layer 31, and bearing layer 31 is used for bearing heat-seal layer 32, and bearing layer 31 is located the one side that is close to barrier layer 2, and is specific, and bearing layer 31 is the PE layer, and heat-seal layer 32 is the EVA layer, and the EVA can be through crowded scribbling or hot melt scribble and coat on bearing layer 31. The thickness of the bearing layer 31 is 20-50 μm, and the thickness of the heat sealing layer 32 is 15-30 μm.

The surface printing layer 1 is a polyethylene terephthalate (PET) layer. The thickness of the surface printing layer 1 is 7-12 μm. For making the straw cup seal the complex film and can show the information of packing the content, in this embodiment, still be provided with printing ink layer 4 on surface printing layer 1, printing ink layer 4 is located surface printing layer 1 and is close to the one side of barrier layer 2, and printing ink layer 4 is used for showing characters or pattern information. In other embodiments, to further make the information displayed by the ink layer 4 more visible to consumers, a matte oil layer may be disposed on the surface print substrate 1, the matte oil layer being disposed on a side of the surface print substrate 1 away from the barrier layer 2.

The barrier layer 2 is an aluminum foil layer, and the thickness of the barrier layer 2 is 30-60 μm.

In this embodiment, the surface printing layer 1, the barrier layer 2 and the inner film layer 3 are all compounded in a sticking manner, so that an adhesive layer 5 is further arranged between the surface printing layer 1 and the barrier layer 2 and between the barrier layer 2 and the inner film layer 3, the adhesive layer 5 is a polyurethane adhesive layer 5, and in order to ensure the bonding effect of the two materials, the coating weight of the adhesive is selected to be 3-6g/m²Is most preferred.

The principle of use of this embodiment is generally as follows:

the PE film is semitransparent, has the characteristics of no toxicity, no odor and reliable sanitary performance, has low melting point and excellent formability and heat seal property, the EVA has better toughness, impact resistance and heat seal property, the PET film has the characteristics of high strength, good rigidity, transparency, high glossiness and the like, is colorless, tasteless and non-toxic, has stronger toughness, the tensile strength of the PET film is 3 times that of a PC film and a nylon film, the impact strength of the PET film is 3-5 times that of a BOPP film, has excellent wear resistance, folding resistance, pinhole resistance, tear resistance and the like, has smaller heat shrinkage, and can improve the heat seal property, the barrier property and the printing adhesion of a packaging film material; the aluminum foil is a soft metal film, not only has the advantages of moisture protection, air tightness, shading, abrasion resistance, fragrance preservation, no toxicity, no odor and the like, but also because it has elegant silvery luster, is easy to print and process beautiful patterns and figures with various colors, has good barrier property of aluminum foil, can shield water vapor, air, ultraviolet rays, bacteria and the like as a packaging material, leads the packaged objects to be well protected, can ensure that the steaming food does not deteriorate for more than one year, and the aluminum foil has the characteristics of stable state at high temperature and low temperature, good mechanical property and composite adaptability, an inner film layer 3 is prepared by compounding EVA and PE, the inner film layer 3 is matched with PET and aluminum foil to form a sealing film, and the thickness of each layer is correspondingly set, so that the prepared straw cup sealing composite film has better heat sealing and barrier properties, and is favorable for popularization and application of the straw cup.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a straw cup seals complex film, its characterized in that, includes and piles up surperficial printing layer (1), barrier layer (2) and interior rete (3) of establishing in proper order, interior rete (3) are including heat-seal layer (32) and be used for bearing layer (31) of heat-seal layer (32), bearing layer (31) are located and are close to one side of barrier layer (2), bearing layer (31) are the polyethylene layer, heat-seal layer (32) are ethylene-vinyl acetate copolymer layer.

2. Straw cup sealing composite film according to claim 1, characterized in that the thickness of the carrier layer (31) is 20-50 μm.

3. The straw cup-seal composite film according to claim 1 or 2, wherein the thickness of the heat-seal layer (32) is 15-30 μm.

4. The straw cup seal composite film according to claim 1, wherein the surface printing layer (1) is a polyethylene terephthalate layer.

5. The straw cup sealing composite film according to claim 4, wherein the thickness of the surface printing layer (1) is 7-12 μm.

6. The straw cup sealing composite film according to claim 5, wherein an ink layer (4) is further arranged on one side of the surface printing layer (1) close to the barrier layer (2).

7. The straw cup seal composite film according to claim 1, wherein the barrier layer (2) is an aluminum foil layer.

8. The straw cup seal composite film according to claim 7, wherein the thickness of the barrier layer (2) is 30-60 μm.

9. The straw cup sealing composite film according to claim 1, wherein an adhesive layer (5) is further arranged between the surface printing layer (1) and the barrier layer (2) and between the barrier layer (2) and the inner film layer (3).