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TPU (Thermoplastic Polyurethane) film for garment hot stamping and production process thereof

A production process and garment technology, applied in the field of TPU film for garment hot stamping and its production process, to achieve the effect of enhancing peel strength and avoiding quality and health problems

Pending Publication Date: 2022-07-01
泉州市星达鞋服材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is no good solution and control method for the residue of DMF and other organic solvents caused by dry veneer processing. The solvent is used to erode the wet-laid base, so as to achieve good adhesion between the dry-laid surface layer and the wet-laid base, and to achieve the effect of integrating the hand feeling, surface texture and color effect of synthetic leather

Method used

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  • TPU (Thermoplastic Polyurethane) film for garment hot stamping and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present embodiment provides a production process of a TPU film for garment hot stamping, comprising the following steps:

[0024] S1. Preparation of TPU base: Coat a high-melting TPU film with a melting point of 180°C on a high-melting point TPU film with a melting point of 100°C. The melted liquid hot-melt adhesive of the low-melting TPU particles, after cooling, compound the PE protective film, and wind it up for use.

[0025] S2. Preparation of dry surface layer: coating the surface layer PU slurry on the surface of the release paper, the coating amount is 120g / m 2 , the viscosity at 20 ° C is 3000cps, then dried at 125 ° C until the solvent is completely volatilized, and rolled for use; the surface layer PU slurry is composed of the following components in parts by weight: 40 parts of solvent, 40 parts of polyurethane resin LT -95 100 parts, 5 parts of color paste, the solvent is DMF.

[0026] S3, extrusion compounding: unwinding the TPU base, coating 20g / m aft...

Embodiment 2

[0030] The present embodiment provides a production process of a TPU film for garment hot stamping, comprising the following steps:

[0031] S1. Preparation of TPU base: Coat a high-melting point TPU film with a melting point of 160°C on a high-melting point TPU film with a melting point of 95°C. The liquid hot melt adhesive after melting of the low-melting point TPU particles, after cooling, compound the PE protective film, and wind it up for use.

[0032] S2. Preparation of dry surface layer: coating the surface layer PU slurry on the surface of the release paper, the coating amount is 150g / m 2 , the viscosity at 20°C is 3000cps, and then dried at 120°C until the solvent is completely volatilized, and the roll is ready for use; the surface layer PU slurry is composed of the following components in parts by weight: 30 parts of DMF, 20 parts of MEK, polyurethane 120 parts of resin LT-95, 8 parts of color paste.

[0033] S3, extrusion compounding: unwinding the TPU base, coati...

Embodiment 3

[0037] The present embodiment provides a production process of a TPU film for garment hot stamping, comprising the following steps:

[0038] S1. Preparation of TPU base: Coat a high melting point TPU film with a melting point of 175°C on a high melting point TPU film with a melting point of 105°C. The melted liquid hot-melt adhesive of the low melting point TPU particles, after cooling, compound the PE protective film, and wind it up for use.

[0039] S2. Preparation of dry surface layer: coating the surface layer PU slurry on the surface of the release paper, the coating amount is 100g / m 2 , the viscosity at 20 ° C is 2500cps, then dried at 130 ° C until the solvent is completely volatilized, and the roll is ready for use; the surface layer PU slurry is composed of the following components in parts by weight: 30 parts of solvent, 30 parts of polyurethane resin LT -95 100 parts, color paste 4 parts, the solvent is MEK.

[0040] S3, extrusion compounding: unwinding the TPU bas...

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Abstract

The production process comprises the following steps: S1, coating a high-melting-point TPU film with a liquid hot melt adhesive formed by melting low-melting-point TPU particles, cooling, compounding with a protective film, and rolling for later use; coating the surface layer PU slurry on the surface of release paper, drying until the solvent is completely volatilized, and rolling for later use; s3, extrusion compounding: unwinding a TPU substrate, coating hydroxyl-terminated acrylic resin on the surface of the high-melting-point TPU film after corona, extruding and casting a bonding layer resin melt on the surface of the hydroxyl-terminated acrylic resin through a double-stage screw extruder, compounding with a dry-method surface layer, and finally winding to obtain the high-melting-point TPU film. The adhesive layer resin melt is a mixture of solvent-free polyurethane resin and aliphatic isocyanate. According to the invention, organic solvent residues existing in a semi-dry sticking process are overcome, and the peel strength of the TPU substrate and the bonding layer is enhanced.

Description

technical field [0001] The invention belongs to the technical field of TPU materials, and in particular relates to a TPU film for clothing hot stamping and a production process thereof. Background technique [0002] The conventional processing methods of solvent-based polyurethane synthetic leather are mainly divided into two parts: wet bass processing and dry veneer processing. Chinese published patent document (CN102229272A) discloses a new type of TPU synthetic leather production process. First, a high melting point TPU film and a lower melting point hot melt adhesive particle are selected, and then the hot melt adhesive particle is heated to a completely molten liquid state, It is evenly coated on the back of the TPU film, and after cooling to a certain extent, the PE plastic film is laminated to protect the hot-melt adhesive, and the semi-finished TPU synthetic leather is obtained; the dry bonding layer with excellent adhesion is used to dissolve PU resin in MEK In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/40B32B33/00B32B7/12B32B7/06B32B27/32B32B27/08B32B27/06B32B27/10B32B29/00B32B37/12B32B37/10B32B38/00B44C1/17
CPCB32B27/40B32B33/00B32B7/12B32B7/06B32B27/32B32B27/08B32B27/10B32B29/00B32B37/12B32B37/10B32B38/0008B44C1/1729B32B2255/10B32B2255/26
Inventor 庄刚松
Owner 泉州市星达鞋服材料有限公司
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