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Wet-type PU (polyurethane) thin film attached with TPU (thermoplastic polyurethane) thin film

A film and wet technology, applied in the field of wet PU plus TPU film, can solve the problems of elasticity, toughness, wear resistance, cold resistance, easy cracking, cracking, not enough environmental protection, etc., so that it is not easy to crack and break , good fixation, prolonging the service life

Active Publication Date: 2014-02-12
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the fact that some toxic auxiliary materials such as DMF (dimethylformamide) are often added in the manufacturing process of the wet PU film, there are certain defects in its application. The DMF contained in it is not only not environmentally friendly, but also causes great harm to the human body. harm
In addition, its elasticity, toughness, wear resistance, cold resistance and other properties are still not enough to manufacture some high-demand products, and it is also easy to crack and break, and the cost is relatively high when used in bags, building materials, shoe materials and other products

Method used

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  • Wet-type PU (polyurethane) thin film attached with TPU (thermoplastic polyurethane) thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The wet PU attached TPU film provided by this embodiment includes a wet PU film layer 1 and a TPU film layer 2, and a hot melt adhesive layer 3 is also arranged between the wet PU film layer 1 and the TPU film layer 2.

[0046] Wherein, by weight percentage, TPU film comprises the following components:

[0047] Polyester thermoplastic polyurethane 93%;

[0048] Slip agent silicone oil 4%;

[0049] Antioxidant tetrakis[methylene-3,3',5-(di-tert-butyl-4-hydroxy-phenyl)propionate]pentaerythritol ester 0.5%;

[0050] Benzoic acid anti-ultraviolet agent 1%;

[0051] Stabilizer zinc stearate 1%;

[0052] Anti-hydrolysis agent carbodiimide 0.5%.

[0053] Among them, polyester thermoplastic polyurethane is prepared from polyester polyol, 4,4'-diphenylmethane diisocyanate (MDI) and 1,4-butanediol as raw materials.

Embodiment 2

[0055] The difference with embodiment 1 is:

[0056] By weight percentage, TPU film contains the following components:

[0057] Polyether thermoplastic polyurethane 88%;

[0058] Slip agent methyl silicone oil 5%;

[0059] Antioxidant N,N'-bis[[3-(3,5)-di-tert-butyl-4-hydroxyphenyl]propionyl]hexamethylenediamine 1%;

[0060] Xylene ketone anti-ultraviolet agent 2%;

[0061] Stabilizer calcium stearate 2%;

[0062] Anti-hydrolysis agent biscarbodiimide 2%.

[0063] Among them, polyether thermoplastic polyurethane is prepared from polytetrahydrofuran, toluene diisocyanate (TDI) and 1,4-butanediol as raw materials.

[0064] The rest are the same as those in the embodiments, and will not be repeated here.

Embodiment 3

[0066] The difference with embodiment 1 is:

[0067] By weight percentage, TPU film contains the following components:

[0068] Polyether thermoplastic polyurethane 98%;

[0069] Slip agent water-soluble silicone oil 1%;

[0070] Antioxidant tris[2,4-di-tert-butylphenyl]phosphite 0.2%;

[0071] Benzotriazole anti-ultraviolet agent 0.3%;

[0072] Stabilizer ethylene stearamide 0.3%;

[0073] Anti-hydrolysis agent polycarbodiimide 0.2%.

[0074] Among them, polyether thermoplastic polyurethane is prepared from polytetrahydrofuran, toluene diisocyanate (TDI) and 1,4-butanediol as raw materials.

[0075] The rest are the same as those in the embodiments, and will not be repeated here.

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Abstract

The invention belongs to the technical field of thin film products and in particular relates to a wet-type PU (polyurethane) thin film attached with a TPU (thermoplastic polyurethane) thin film. The wet-type PU (polyurethane) thin film attached with the TPU (thermoplastic polyurethane) thin film comprises a wet-type PU thin film layer, a TPU thin film layer and a hot melt adhesive layer arranged between the PU thin film layer and the TPU thin film layer. Compared with the prior art, the wet-type PU thin film attached with the TPU thin film has the advantages that a wet-type PU thin film is compounded with the TPU thin film, TPU can insulate toxic materials, like DMF (dimethyl formamide), contained in the wet-type PU thin film, and a user can not directly contact the wet-type PU thin film, so that environmental protection performance of the wet-type PU thin film can be greatly improved, and harm of the wet-type PU thin film to a human body is reduced; meanwhile, characteristics of TPU can be fully displayed, so that the wet-type PU thin film attached with the TPU thin film has good elasticity, toughness, abrasion resistance, cold resistance and the like, crack and fracture can be hardly produced, and cost for manufacturing products of bags, building materials, shoe materials and the like can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of film products, and in particular relates to a wet-type PU plus TPU film. Background technique [0002] PU is the abbreviation of English poly urethane, and its chemical Chinese name is "polyurethane". Wet PU film is a material with good air permeability, oil resistance, cold resistance, folding resistance and wear resistance, and has elasticity. It has been used as clothing, footwear and bags, as well as pipelines and conveyor belts. It has become increasingly Be affirmed by the market. [0003] However, due to the fact that some toxic auxiliary materials such as DMF (dimethylformamide) are often added in the manufacturing process of the wet PU film, there are certain defects in its application. The DMF contained in it is not only not environmentally friendly, but also causes great harm to the human body. harm. In addition, its elasticity, toughness, wear resistance, cold resistance and other propertie...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B27/06B32B27/40C08L75/04
Inventor 何建雄
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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