Composite membrane having stable friction coefficient and capable of being spurted with codes and preparation method of composite membrane

A technology of friction coefficient and composite film, which is applied in the field of stable friction coefficient and printable composite film and its preparation. The effect of improving stability

Inactive Publication Date: 2016-06-15
JIANGYIN SHENLONG PACKAGING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned migration amount and mig

Method used

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  • Composite membrane having stable friction coefficient and capable of being spurted with codes and preparation method of composite membrane
  • Composite membrane having stable friction coefficient and capable of being spurted with codes and preparation method of composite membrane
  • Composite membrane having stable friction coefficient and capable of being spurted with codes and preparation method of composite membrane

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Such as figure 1 As shown, the composite film with stable friction coefficient and code-spraying in Example 1 consists of outer layer 1 (PET polyester film), polyurethane adhesive layer 4, barrier layer 2 (aluminum foil), and polyurethane adhesive layer 4 from the outside to the inside. Polyethylene co-extruded film layer 3, polyethylene co-extruded film layer 3 includes corona treatment layer 31, core layer 32, heat sealing layer 33 from outside to inside; corona treatment layer, core layer and heat sealing layer are blown films Co-extruded. The thickness of the polyethylene co-extruded film layer is 50 μm; the thickness of the outer layer 1 PET polyester film is 12 μm, and the thickness of the barrier layer is 7 μm.

[0028] Example 1 without printing, the preparation process is:

[0029] S1: Preparation of polyethylene co-extruded film layer. The components of each layer are configured in proportions. The composition of the heat seal layer includes 0.5%...

Example Embodiment

[0032] Example 2

[0033] Such as figure 2 As shown, the difference between Example 2 and Example 1 is that in the composition of the heat seal layer, the weight percentage of the slip agent is 4.5%, the weight percentage of the inorganic anti-blocking agent silica is 0.5%, and the rest is linear low density polymer. A mixture of ethylene and low-density polyethylene, the weight percentage of linear low-density polyethylene in the polyethylene resin is 34%, and the mixing ratio of linear low-density polyethylene and low-density polyethylene in the corona treatment layer and the core layer is the same as that of the heat seal layer The outer layer is PET polyester printing film, the ink used is alcohol-soluble ink, and the PET polyester printing film includes PET polyester film and ink layer 5 from the outside to the inside.

[0034] The difference in preparation process is:

[0035] First, in the printing process of PET polyester film, at 50-60℃, use alcohol-soluble ink to print P...

Example Embodiment

[0037] Example 3

[0038] The difference between Example 3 and Example 2 is: in the composition of the heat seal layer, the weight percentage of the slip agent is 10%, the weight percentage of the inorganic anti-blocking agent silica is 2%, and the linear low density polyethylene in the polyethylene resin The weight percentage of the corona treatment layer and the core layer is the same as that of the heat-sealing layer.

[0039] The difference in preparation process is:

[0040] The coating amount of polyurethane two-component dry composite glue is 3.25gsm, the composite tension is controlled at 35%, the curing temperature of the composite film is 45℃, and the curing time is 48h.

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Abstract

The invention discloses a composite film with a stable friction coefficient and which can be coded. It includes an outer layer, a barrier layer and a polyethylene co-extrusion film layer from the outside to the inside, and the polyethylene co-extrusion film layer includes a corona treatment layer from the outside to the inside. , a core layer and a heat-sealing layer. The material composition of the heat-sealing layer mainly includes polyethylene resin and a slip agent. The slip agent is a silicone slip agent masterbatch with polyethylene as a carrier. In the present invention, silicone slippery agent is added to the polyethylene co-extrusion film heat-sealing layer located inside the film, and it is extruded to the surface and evenly distributed during processing by utilizing its incompatibility with the main material to achieve The purpose of reducing the friction coefficient, and the molecular weight is large. Under the high temperature conditions during the film aging, storage and use, the silicone resin with low surface energy will not migrate and precipitate, and improve the stability of the friction coefficient of the inner surface of the film. Unwinding The speed meets the requirements of high-speed packaging machines. The invention discloses a method for preparing a composite film suitable for stable friction coefficient and capable of coding.

Description

technical field [0001] The invention relates to the technical field of pharmaceutical packaging composite materials, and specifically relates to a composite film with a stable friction coefficient and which can be coded and a preparation method thereof. Background technique [0002] There are many types of packaging machines in the prior art, the degree of automation is getting higher and higher, and the packaging speed is getting faster and faster, so the requirements for flexible packaging composite films are getting higher and higher. The composite film for high-speed automatic packaging needs to have good smoothness to ensure that it can be packaged smoothly on the high-speed automatic filling machine. Therefore, the dynamic and static friction coefficient of the film surface should be relatively low, generally between 0.1 and 0.3. The slipperiness of the film is achieved by adding a slip agent. After the film is formed, the conventional erucamide slip agent migrates to ...

Claims

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Application Information

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IPC IPC(8): B32B15/20B32B15/09B32B15/085B32B27/18B32B7/10B32B33/00B32B37/12B32B38/00B32B38/14
CPCB32B15/20B32B7/10B32B15/085B32B15/09B32B27/18B32B33/00B32B37/1284B32B38/0036B32B38/145B32B2307/75
Inventor 俞国星孙永庆张继鸣
Owner JIANGYIN SHENLONG PACKAGING MATERIALS CO LTD
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