CN213977510U

CN213977510U - Novel environmental protection self-adhesive film

Info

Publication number: CN213977510U
Application number: CN202022777967.4U
Authority: CN
Inventors: 张建林; 张黎明
Original assignee: Suzhou Rongdaxin New Material Technology Co ltd
Current assignee: Suzhou Rongdaxin New Material Technology Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-08-17
Anticipated expiration: 2030-11-26

Abstract

The utility model provides an among the novel environmental protection self-adhesive film, the viscidity on self-adhesive layer is big and only glues mutually with self, does not give any other material bonding, and the bonding of self-adhesive layer to the backing layer when substrate and isolation layer effectively prevent the rolling, conveniently unreels, wherein, chooses for use modified SEBS in the self-adhesive layer, anti-oxidant and mobility improver preparation to form to SEBS elastomer material is the main component, makes the self-adhesive film have good viscous stability and ageing resistance and good processing property after adding modified SEBS.

Description

Novel environmental protection self-adhesive film

Technical Field

The utility model relates to a food package field, it is comparatively concrete, relate to a novel environmental protection self-adhesive film.

Background

SEBS is a linear triblock copolymer with polystyrene as a terminal segment and an ethylene-butylene copolymer obtained by hydrogenation of polybutadiene as a middle elastic block. SEBS does not contain unsaturated double bonds, so the SEBS has good stability and aging resistance. The SEBS has excellent ageing resistance, plasticity and high elasticity, can be processed and used without vulcanization, can reuse leftover materials, and is widely used for producing high-grade elastomers, plastic modification, adhesives, lubricating oil tackifiers, fillers and sheath materials of wires and cables and the like. The SEBS has good weather resistance, heat resistance, compression deformation resistance and excellent mechanical property. In addition, the SEBS has a higher melting point, can have a relatively stable molten state at a high temperature, can improve the melt strength of the self-adhesive layer at the high temperature, and avoids the self-adhesive layer from being damaged.

At present, the existing food packaging material is generally adhered by means of adhesive auxiliary agents such as double-sided adhesive, and when the packaging is disassembled, the residual adhesive is adhered to food and pollutes the food, or the adhesive is adhered too firmly, so that the packaging material has to be damaged to take the food out when the packaging is disassembled, the food pollution can be caused, the degradation degree of the adhesive auxiliary agents is low, and the environment is polluted.

SUMMERY OF THE UTILITY MODEL

In order to the above circumstances, the utility model provides an among the novel environmental protection self-adhesive film, the viscidity on self-adhesive layer is big and only glues mutually with self, does not give any other material bonding, and the bonding of self-adhesive layer to the backing layer when substrate and isolation layer effectively prevent the rolling, conveniently unreels, wherein, chooses for use modified SEBS in the self-adhesive layer, anti-oxidant and mobility improver preparation to form to SEBS elastomer material is the principal ingredients, makes the self-adhesive film have good viscidity stability and ageing resistance and good processing property after adding modified SEBS.

The utility model provides a novel environmental protection self-adhesive film which characterized in that: comprises a substrate 1, a self-adhesive layer 2 and an isolating layer 3 from top to bottom in sequence.

The base material 1 is made of one of PET, PP and paper.

The isolation layer 3 adopts a release film, and the release film can be one of a PE release film, a PET release film, an OPP release film and a composite release film.

The self-adhesive layer 2 is made of modified SEBS, and is prepared from 99.1-99.5 wt% of SEBS elastomer, 0.3-0.8 wt% of antioxidant and 0.1-0.2 wt% of fluidity improver.

The performance parameters selected by the SEBS elastomer are as follows: the density is 0.7-1.0kg/m³The weight ratio of styrene to ethylene butylene is 10/90-15/85, the solvent index is 4.0g/10min-5.0g/10min, the hardness is 40A-45A, the tensile strength is 9.0N/m-11.0N/m, the elongation is 900% -980%, and the 300% tensile strength MPA is 1.0.

The thickness of the base material 1 is 25-45 μm, the thickness of the self-adhesive layer 2 is 5-8 μm, and the thickness of the isolation layer 3 is 25-45 μm.

The technical scheme for synthesizing the novel environment-friendly self-adhesive film comprises the following steps:

the material of the self-adhesive layer 2 is placed into an extruder 4 and is stirred for 2.5-4 hours at the temperature of 200-280 ℃ through a co-extrusion processing technology, the mixture is swelled and uniformly mixed to finally obtain uniform and stable modified SEBS, the modified SEBS is extruded out of a die head 41 after being prepared, is extruded into a space between a curing feed wheel 8 and a first pressure-boosting wheel 5 which are provided with a base material 1 through the die head 41, is attached to the base material 1 after being clamped and flattened by the first pressure-boosting wheel 5 and the curing feed wheel 8, then enters a space between a curing discharge wheel 7 and a second pressure-boosting wheel 6 which are provided with an isolation layer 3 after being drawn by a drawing pressure-boosting wheel to enable the non-attached surface of the modified SEBS to be in contact with the isolation layer 3, and is finally wound by a winding roller 9 to obtain the environment-friendly self-adhesive film.

The first pressure-assisted wheel 5 and the second pressure-assisted wheel 6 are silicone rubber pressure-assisted wheels.

Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage: the utility model discloses an among the environmental protection self-adhesive film, self-adhesive layer 2's viscidity is big and only glues mutually with self, do not give any other material bonding, self-adhesive layer 2 is to the bonding of backing layer when substrate 1 and isolation layer 3 effectively prevent the rolling, the convenient deconvolution, wherein, select in the self-adhesive layer 2 to use modified SEBS, anti-oxidant and mobility improver preparation to form, use SEBS elastomer material as the essential element, make the self-adhesive film have good viscous stability and ageing resistance and good processing property after adding modified SEBS.

Drawings

Fig. 1 is a schematic structural view of an aluminum-plastic composite film according to an embodiment.

Fig. 2 is a schematic structural view of an aluminum-plastic composite film according to an embodiment.

Description of main components:

the following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

A synthesis method of a novel environment-friendly self-adhesive film comprises the following specific processes: the material of the self-adhesive layer 2 is placed into an extruder 4 and is stirred for 2.5-4 hours at the temperature of 200-280 ℃ through a co-extrusion processing technology, the material is swelled and mixed uniformly to finally obtain uniform and stable modified SEBS, the modified SEBS is extruded out of a die head 41 after being prepared, the modified SEBS is extruded through the die head 41 to enter between a curing feeding wheel 8 and a first pressure-boosting wheel 5 which are provided with a base material 1, the modified SEBS is attached to the base material 1 after being clamped and flattened by the first pressure-boosting wheel 5 and the curing feeding wheel 8, then the modified SEBS enters between a curing discharging wheel 7 and a second pressure-boosting wheel 6 which are provided with an isolation layer 3 after being drawn by a drawing pressure-boosting wheel, so that the non-attached surface of the modified SEBS is in contact with the isolation layer 3, and finally the modified SEBS is wound by a winding roller 9 to obtain the environment-friendly self-adhesive film, wherein the first pressure-boosting wheel 5 and the second pressure-boosting wheel 6 are silicon rubber pressure-boosting wheels. The technical solution of the present invention will be further described with reference to the following examples.

Detailed description of the preferred embodiment 1

The utility model provides a novel environmental protection self-adhesive film, from top to bottom includes substrate 1, self-adhesive layer 2 and isolation layer 3 in proper order, wherein, the material of self-adhesive layer 2 is modified SEBS, by weight percent, is prepared by 99.1% SEBS elastomer, 0.8% antioxidant and 0.1% mobility improver, the material of substrate 1 is PET, select PE from the type membrane, wherein, the thickness of substrate 1 is 25 mu m, the thickness 5 mu m of self-adhesive layer 2, the thickness 25 mu m of isolation layer 3.

Specific example 2

The novel environment-friendly self-adhesive film sequentially comprises a base material 1, a self-adhesive layer 2 and an isolation layer 3 from top to bottom, wherein the self-adhesive layer 2 is made of modified SEBS and is prepared from a SEBS elastomer accounting for-99.5 wt%, an antioxidant accounting for 0.3 wt% and a fluidity improver accounting for 0.2 wt%, the base material 1 is made of PP, and PET (polyethylene terephthalate) release film is selected from the release film, wherein the thickness of the base material 1 is 30 micrometers, the thickness of the self-adhesive layer 2 is 7 micrometers, and the thickness of the isolation layer 3 is 30 micrometers.

Specific example 3

A novel environment-friendly self-adhesive film sequentially comprises a base material 1, a self-adhesive layer 2 and an isolating layer 3 from top to bottom, wherein the self-adhesive layer 2 is made of modified SEBS and is prepared from 99.3 wt% of SEBS elastomer, 0.5 wt% of antioxidant and 0.2 wt% of fluidity improver, the base material 1 is made of paper, and the releasing film is a laminating releasing film; wherein, the thickness of the base material 1 is 45 μm, the thickness of the self-adhesive layer 2 is 8 μm, and the thickness of the isolation layer 3 is 45 μm.

The utility model discloses an among the environmental protection self-adhesive film, self-adhesive layer 2's viscidity is big and only glues mutually with self, do not give any other material bonding, self-adhesive layer 2 is to the bonding of backing layer when substrate 1 and isolation layer 3 effectively prevent the rolling, the convenient deconvolution, wherein, select in the self-adhesive layer 2 to use modified SEBS, anti-oxidant and mobility improver preparation to form, use SEBS elastomer material as the essential element, make the self-adhesive film have good viscous stability and ageing resistance and good processing property after adding modified SEBS.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a novel environmental protection self-adhesive film which characterized in that: comprises a base material (1), a self-adhesive layer (2) and an isolating layer (3) from top to bottom in sequence.

2. The novel environment-friendly self-adhesive film according to claim 1, wherein: the base material (1) is made of one of PET, PP and paper.

3. The novel environment-friendly self-adhesive film according to claim 1, wherein: the isolation layer (3) adopts a release film.

4. The novel environment-friendly self-adhesive film according to claim 1, wherein: the self-adhesive layer (2) is made of modified SEBS.

5. The novel environment-friendly self-adhesive film according to claim 1, wherein: the thickness of the substrate (1) is 25-45 μm.

6. The novel environment-friendly self-adhesive film according to claim 1, wherein: the thickness of the self-adhesive layer (2) is 5-8 μm.

7. The novel environment-friendly self-adhesive film according to claim 1, wherein: the thickness of the isolation layer (3) is 25-45 μm.