CN205661108U

CN205661108U - Easily tear epiphragma

Info

Publication number: CN205661108U
Application number: CN201620518167.1U
Authority: CN
Inventors: 胡钢; 王庆
Original assignee: Jiangyin Green Packing Material Co Ltd
Current assignee: Jiangyin Green Packing Material Co Ltd
Priority date: 2016-05-31
Filing date: 2016-05-31
Publication date: 2016-10-26
Anticipated expiration: 2026-05-31

Abstract

The utility model provides an easily tear epiphragma, by outer to in proper order interior includes resistant layer, barrier layer and the heat -seal layer of waiting, characterized by: make by the LLDPE thin layer on resistant time layer and heat -seal layer, resistant time layer distributes and has the antistatic particle, the barrier layer is made by the EVOH thin layer, and EVOH film both sides face all is equipped with the corona layer to through corona layer and resistant layer and the heat -seal layer veneer of waiting. This scheme provides an easily tear epiphragma, is difficult for taking static in the production process, and is safer.

Description

Easy-to-peel cover film

Technical field

This utility model relates to synthetical plastics film field, particularly to Easy-to-peel cover film.

Background technology

Easy-to-peel cover film is applicable to the sealing of the open-mouth of jellies product, can incite somebody to action when people eat under certain external force Epiphragma tears off from surface of shell.

Easily tore film generally includes outermost weathering layer, and middle barrier layer and the hot sealing layer of inner side, weathering layer is mainly adopted Being glued on barrier layer by PET film, although PET film has preferable mechanical performance, and obdurability is that all thermoplasticity is moulded In material best, but its easy static electrification, the most still there is no suitable anti-static method.So cause co-extrusion in process of production Electrostatic on Easy-to-peel cover film outer surface belt out, workman easily gets an electric shock when touching thin film, causes production accident.

Utility model content

The purpose of this utility model is to provide a kind of Easy-to-peel cover film, is difficult to bring electrostatic in production process, safer.

Above-mentioned purpose of the present utility model has the technical scheme that a kind of Easy-to-peel cover film, by the most extremely Include that weathering layer, barrier layer and hot sealing layer, described weathering layer and hot sealing layer are made by LLDPE thin layer the most successively, described resistance to Waiting layer and antistatic additive particle is distributed, described barrier layer is made up of EVOH thin layer, and EVOH thin film two sides are equipped with corona layer, And it is glued with weathering layer and hot sealing layer by corona layer.

By using technique scheme, LLDPE thin film has the puncture resistance of excellence, and its tolerance to cold tool is better than Other thin film, are resistant to lower temperature；Certainly the most important thing is that it can well coexist with antistatic additive particle, improve weathering layer Electrical conductivity so that it is rapidly electric discharge and prevent the accumulation of electrostatic；It is to utilize it preferable that hot sealing layer is also adopted by LLDPE thin-film material Heat sealability, as long as reaching the minimum envelope temperature that rises just have good heat seal strength, sealing is easily torn and contamination resistance is strong.

Preferably, described weathering layer thickness is identical with hot sealing layer thickness.

By using technique scheme, thickness is identical, then epiphragma lateral symmetry is uniform, is difficult to when gluing tilt, flat Whole degree is well.

Preferably, described weathering layer is by weather-proof internal layer LLDPE thin film and weather-proof outer layer LLDPE film hot compacting, described Antistatic additive particle is distributed in weather-proof outer layer LLDPE thin film.

By using technique scheme, double-decker is avoided the lacerated wound on surface to extend to barrier layer, is caused barrier layer It is exposed to service life reduction in the external world.

Preferably, described hot sealing layer is by sealing internal layer LLDPE thin film and heat-sealing outer layer LLDPE film hot compacting.

By using technique scheme, heat-sealing outer layer LLDPE thin film deforms after hot-pressing, owing to hot sealing layer is double-deck knot Structure, the deformation of heat-sealing outer layer is heat-sealed internal layer and cuts off, do not easily causes the deformation of barrier layer.

Preferably, described barrier layer is made up of EVOH thin film.

By using technique scheme, EVOH thin film not only shows fabulous processing characteristics, and to gas, gas Taste, spice, solvent etc. present the blocking effect of excellence.

Preferably, described Easy-to-peel cover film gross thickness is at 25-30 micron.

By using technique scheme, for jellies food epiphragma, due to without load-bearing, blocked up more waste material Material；Thickness then processes more difficulty, the epiphragma structure of the most this multilamellar less than 25 microns.

Preferably, described barrier layer thickness is at 10-15 micron.

By using technique scheme, this thickness can the most effectively play iris action, and have bigger surplus and divide Dispensing weathering layer and hot sealing layer, it is ensured that the additionally functional realiey of two-layer.

Preferably, described heat-sealing internal layer thickness is more than heat-sealing outer layer thickness.

By using technique scheme, the thicker deformation that can fully absorb and weaken heat-sealing outer layer of heat-sealing internal layer thickness Amount, reduces its impact on barrier layer deformation.

Preferably, described weathering layer outer surface is coated with one layer of nanometer titanium dioxide coating.

By using technique scheme, during child's dyestripping, easily the dirt of weatherable outer surface is brought into jelly package In, and nano titanium oxide has preferable self-cleaning function, it is ensured that weathering layer outer surface clean, edible relatively sanitary.

Accompanying drawing explanation

Fig. 1 is that epiphragma coordinates the schematic diagram on Fruit yelly case;

Fig. 2 is the sectional view in A-A direction in Fig. 1.

Reference: 1, weathering layer;1a, weathering internal layer LLDPE thin film；1b, weather-proof outer layer LLDPE thin film；2, barrier layer； 2a, corona layer；3, hot sealing layer；3a, heat-sealing internal layer LLDPE thin film；3b, heat-sealing outer layer LLDPE thin film；4, nano titanium oxide is coated with Layer；5, antistatic additive particle.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail.

As it is shown in figure 1, a kind of Easy-to-peel cover film, it plays obstruct extraneous dirty for covering at jellies plastic housing upper surface Dye also can facilitate the tearing off when edible.

As in figure 2 it is shown, Easy-to-peel cover film ecto-entad is mainly made up of three functional layers, respectively weathering layer 1, barrier layer 2 With hot sealing layer 3；Weathering layer 1 barrier layer 2 relative with hot sealing layer 3 is symmetrical set, i.e. weathering layer 1 identical with hot sealing layer 3 thickness and Being all double-decker, double-deck material is all LLDPE thin film and makes；The double-layer structure of weathering layer 1 is respectively weather-proof internal layer LLDPE thin film 1a and weather-proof outer layer LLDPE thin film 1b, both are hot-forming, are distributed anti-on weather-proof outer layer LLDPE thin film 1b Electrostatic agent particle 5.The double-layer structure of hot sealing layer 3 is respectively heat-sealing internal layer LLDPE thin film 3a and heat-sealing outer layer LLDPE thin film 3b, Both are hot-forming and heat-sealing internal layer thickness is more than heat-sealing outer layer thickness.

Wherein, Easy-to-peel cover film gross thickness is between 25-30 micron, and relatively thin film clarity is good, it is easy to observe fruit jelly Box interior flesh；Barrier layer 2 is made up of EVOH thin film, and thickness, between 10-15 micron, plays relatively stable iris action； One layer of nano titanium oxide 4 coating, edible fruit jelly more health also it is coated with at weathering layer 1 outer surface.

Wherein, it is respectively provided with corona layer 2a in barrier layer two sides, to increase its surface roughness so that it is with hot sealing layer 3 And weathering layer is the most glued.

Here LLDPE is the english abbreviation of linear low density polyethylene (LLDPE), and linear low density polyethylene (LLDPE) is structurally different In general Low Density Polyethylene, because there is not long-chain branch.The linearity of LLDPE depends on the not syngenesis of LLDPE and LDPE Produce the course of processing.LLDPE, generally under lower temperature and pressure, is total to by ethylene and senior a alkene such as butylene, hexene or octene It is polymerized and generates.The LLDPE polymer that polymerization process generates has the molecular weight distribution more narrower than general LDPE, has line simultaneously Property structure makes it have different rheological behaviors.The melt flow characteristics of LLDPE adapts to the requirement of new technology, particularly uses thin film Expressing technique, can the high-quality LLDPE product of output.LLDPE is applied to all of traditional market of polyethylene, enhance anti-stretch, anti- Penetrate, shock resistance and the performance of anti tear, make LLDPE be suitable to make thin film.

Here EVOH is the abbreviation of ethylene-vinyl alcohol copolymer, polyvinyl processability and vinyl alcohol is polymerized The iris action of thing combines, and ethylene-vinyl alcohol copolymer not only shows fabulous processing characteristics, and to gas, gas Taste, spice, solvent etc. present the blocking effect of excellence.Owing to same ethylene combines, there is heat stability, intercept containing EVOH The laminated vessel of layer 2 can reuse completely.

This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but As long as all being protected by Patent Law in right of the present utility model.

Claims

1. an Easy-to-peel cover film, includes weathering layer (1), barrier layer (2) and hot sealing layer (3) the most successively, it is characterized in that: institute Stating weathering layer (1) and hot sealing layer (3) is made by LLDPE thin layer, described weathering layer (1) is distributed antistatic additive particle (5), Described barrier layer (2) is made up of EVOH thin layer, and EVOH thin film two sides are equipped with corona layer (2a), and by corona layer (2a) Glued with weathering layer (1) and hot sealing layer (3).

Easy-to-peel cover film the most according to claim 1, is characterized in that: described weathering layer (1) thickness and hot sealing layer (3) thickness phase With.

Easy-to-peel cover film the most according to claim 2, is characterized in that: described weathering layer (1) is by weather-proof internal layer LLDPE thin film (1a) hot-forming with weather-proof outer layer LLDPE thin film (1b), it is thin that described antistatic additive particle (5) is distributed on weather-proof outer layer LLDPE In film (1b).

Easy-to-peel cover film the most according to claim 3, is characterized in that: described hot sealing layer (3) is by heat-sealing internal layer LLDPE thin film (3a) with heat-sealing outer layer LLDPE film hot compacting.

Easy-to-peel cover film the most according to claim 4, is characterized in that: described barrier layer (2) is made up of EVOH thin film.

Easy-to-peel cover film the most according to claim 5, is characterized in that: described Easy-to-peel cover film gross thickness is at 25-30 micron.

Easy-to-peel cover film the most according to claim 6, is characterized in that: described barrier layer (2) thickness is at 10-15 micron.

Easy-to-peel cover film the most according to claim 7, is characterized in that: described heat-sealing internal layer thickness is more than heat-sealing outer layer thickness.

Easy-to-peel cover film the most according to claim 1, is characterized in that: described weathering layer (1) outer surface is coated with one layer of nanometer Coating of titanium dioxide (4).