Composite flannelette capable of being embossed

Abstract

The utility model provides composite flannelette capable of being embossed, which comprises a flannelette surface layer and a shape-preserving layer, a plurality of flannelette-shaped bulges are arranged on the surface of one side of the flannelette surface layer, and the surface of the other side of the flannelette surface layer and the shape-preserving layer are compounded into an integral structure through a compounding process; the bending rigidity of the shape-preserving layer is higher than that of the suede layer, and the bending rigidity of the shape-preserving layer is 20 mN.m to 50 mN.m; the creep rate of the shape maintaining layer does not exceed 5% after 1000 hours under the conditions that the environment temperature ranges from-10 DEG C to 60 DEG C, and the environment pressure is one atmospheric pressure. The shape-preserving layer with limited performance and the flannelette are compounded into a whole, so that the maintaining time of the embossing effect on the flannelette is prolonged; the shape maintaining layer has good shaping capacity, and the embossed concave-convex grain edge is clear; according to the composite flannelette, the fluffy convex structure of the suede layer is reserved, and the soft touch feeling and the heat preservation performance are not affected; the device is also suitable for various compound technologies, and the matched compound technology can be selected according to the actual situation.

Description

Technical Field

[0001] The utility model relates to a composite velvet cloth, in particular to an embossable composite velvet cloth. Background Art

[0002] The core feature of flannel is the dense pile structure covering its surface. Common forms include short pile, long pile and velvet. This structure gives flannel excellent thermal insulation and a soft touch. However, in the field of flannel embossing, there is a technical pain point that the embossing effect has a short maintenance period: when long-staple natural fiber flannel is used in conjunction with a cold pressing process, the embossed pattern lacks clarity and is extremely easy to deform, which means the effect is poor and not long-lasting; even if short-staple synthetic fiber flannel is used in conjunction with a hot pressing process, the effective maintenance period of its clear embossing effect is only about 6 months. In response to the above technical difficulties, the present utility model has successfully achieved an extension of the maintenance time of the embossing effect on flannel by targeted optimization of the flannel structure. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the utility model provides a composite velvet cloth which can be embossed.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an embossed composite velvet cloth, characterized in that it includes a suede layer and a shape-retaining layer, one side surface of the suede layer is provided with a plurality of velvet-like protrusions, and the other side surface is composited with the shape-retaining layer into an integrated structure through a composite process; the bending stiffness of the shape-retaining layer is higher than that of the suede layer, and the bending stiffness of the shape-retaining layer is 20mN·m to 50mN·m; the creep rate of the shape-retaining layer does not exceed 5% after 1000 hours under the conditions of an ambient temperature of -10°C to 60°C and an ambient pressure of one atmosphere.

[0005] The beneficial effects of this utility model include: providing an embossable composite fleece fabric, which successfully achieves a prolonged embossing effect by combining a performance-limited shape-retaining layer with the fleece fabric; the shape-retaining layer is made of a material with excellent shaping properties, resulting in clear edges of the embossed concave and convex patterns; and the composite fleece fabric retains the velvety raised structure of the suede surface layer, maintaining its soft touch and warmth-retaining properties. This utility model also features a simple structure, easy processing, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0007] Figure 1 It is a structural diagram of the utility model; DETAILED DESCRIPTION

[0008] The utility model will be made further detailed illustration in combination with the drawings and specific embodiment, but the embodiment does not make any form's limitation to the utility model.

[0009] As Figure 1 Indicated:

[0010] A kind of embossable composite velvet, it is characterized in that, including velvet layer 1 and shape retaining layer 2, the one side surface of velvet layer 1 is equipped with several velvet-like protrusions 11, it is equipped with several velvet-like protrusions 11 because the velvet-like protrusion 11 structure retains the soft touch and warm performance of traditional velvet, the length, density of velvet-like protrusion 11 can be adjusted according to actual application requirement (such as when being used for clothing fabric, velvet-like protrusion length is preferably 0.5mm to 2mm;When being used for home decoration fabric, velvet-like protrusion length can be set to 2 to 5mm).

[0011] The bending stiffness of the shape retaining layer is higher than that of the velvet layer 1, and the bending stiffness of the shape retaining layer 2 is 20mN·m to 50mN·m (preferably the bending stiffness is 35mN·m). The bending stiffness of the shape retaining layer 2 is higher than that of the velvet layer 1, which is to avoid being "flattened" by the velvet layer 1, but it should not be too high, otherwise it will result in too hard hand feeling of the finished product. The creep rate of the shape retaining layer 2 after 1000 hours under the condition that the environmental temperature is-10℃ to 60℃ (preferably the environmental temperature is 25℃) and the environmental pressure is one atmosphere is not more than 5%. As the core support layer of the composite velvet, the key performance directly determines the durability of the embossing effect. This performance index ensures that the embossing structure will not slowly deform due to material creep in different use environments (such as low temperature in winter and high temperature in summer) and long-term use, thereby prolonging the maintenance period of the embossing effect.

[0012] Preferably, the shape retaining layer 2 is a modified PP film or a modified epoxy resin composite material. These two materials have excellent shape retaining properties and can support the velvet embossing effect for a long time.

[0013] A manufacturing process of an embossable composite velvet, the composite process includes hot melt adhesive film compounding, immersion compounding, wet compounding and dry compounding.

[0014] The hot melt adhesive film compounding includes the following steps:

[0015] Step one: clean and dry the shape retaining layer 2 and the velvet layer 1, remove surface oil stains or impurities, ensure that the adhesive film can be effectively attached, and avoid delamination after compounding;

[0016] Step two: sandwich the solid hot melt adhesive film between the velvet layer 1 and the shape retaining layer 2, melt the adhesive film by heating (the heating temperature depends on the adhesive film material), and at the same time, apply a pressure of 0.1MPa to 0.5MPa (preferably 0.3MPa). After cooling, the adhesive film is solidified to form the final composite velvet.

[0017] Hot melt adhesive film composite process has the advantages of no solvent, environmental protection, fast curing speed, high bonding strength, suitable for continuous batch production, etc.

[0018] Impregnation composite includes the following steps:

[0019] Step one: clean and dry the shape-retaining layer 2 and the pile layer 1, remove surface oil stains or impurities, ensure that the impregnating agent can fully penetrate, and avoid delamination after compounding;

[0020] Step two: place the pretreated shape-retaining layer 2 into the impregnating agent, which can be impregnated by vacuum impregnation, pressure impregnation or heating impregnation, to ensure that the shape-retaining layer 2 is uniformly wrapped and filled with the impregnating agent;

[0021] Step three: stack the impregnated shape-retaining layer 2 and the pile layer 1 according to the design, and press or mold to make the layers tightly combined, and at the same time, the impregnating agent is solidified to form the final composite pile fabric.

[0022] Impregnation composite can replace expensive high-end materials by ordinary base material plus functional treatment, achieving high performance with low cost; the material treated by impregnation composite has few defects and stable performance, which can significantly prolong the service life of the product and reduce replacement and maintenance costs; the key equipment of impregnation composite (such as continuous impregnation machine and automatic composite production line) can realize continuous and large-scale processing, with stable production capacity, which is suitable for industries such as fabric that require mass production; the above shows the advantages of impregnation composite process.

[0023] Wet composite includes the following steps:

[0024] Step one: clean and dry the shape-retaining layer 2 and the pile layer 1, remove surface oil stains or impurities, ensure that the adhesive can effectively adhere, and avoid delamination after compounding;

[0025] Step two: evenly coat the liquid adhesive on the surface of the shape-retaining layer 2 and the pile layer 1 in contact;

[0026] Step three: the coated shape-retaining layer 2 and the pile layer 1 immediately enter the composite roller group, and the shape-retaining layer 2 and the pile layer 1 are tightly combined under a pressure of 0.3 MPa to 0.8 MPa (preferably a pressure of 0.5 MPa);

[0027] Step four: the preliminarily combined composite film enters the drying channel, and the solvent in the adhesive is removed by hot air (the temperature of the hot air is adjusted according to the type of the adhesive) to make the adhesive molecules crosslink to form a stable adhesive layer, and finally form the composite pile fabric.

[0028] Wet composite process has the advantages of high composite firmness, wide base material compatibility, and good product flatness.

[0029] Dry composite includes the following steps:

[0030] Step one: clean, dry, remove surface oil or impurities of the shape retaining layer 2 and the pile layer 1;

[0031] Step two: evenly coat the adhesive on the surface of the shape retaining layer 2 and the pile layer 1 by the anilox roller and the doctor blade;

[0032] Step three: the substrate enters the drying channel, and is dried in three sections of low temperature 40-60 DEG C (preferably 50 DEG C), medium temperature 60-80 DEG C (preferably 70 DEG C) and high temperature 80-100 DEG C (preferably 90 DEG C);

[0033] Step four: the shape retaining layer 2 and the pile layer 1 are bonded by the composite roller heated to 40-60 DEG C (preferably 50 DEG C) and the pressure roller;

[0034] Step five: the composite pile cloth is placed in the curing chamber, the temperature of the curing chamber is kept at 25-50 DEG C (preferably 35 DEG C), and is placed for 24-72 hours (preferably 48 hours), to form the final composite pile cloth.

[0035] The dry composite process has the advantages of high composite firmness, wide applicable substrate range, good product flatness, strong process controllability and the like.

[0036] The utility model provides a kind of embossing composite pile cloth, material with shape retaining is compounded on pile cloth, successfully prolongs the embossing effect maintenance time on pile cloth;The material selection of shape retaining layer has good setting ability, and the edge of concave-convex line after embossing is clear;Composite pile cloth retains the pile-like protruding structure of pile layer, soft touch and warm-keeping performance are not affected;The utility model is also adapted to a variety of composite processes, and can select the composite process of adaptation according to actual situation.

[0037] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, so as to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0038] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. An embossable composite fleece, characterized in that: The invention comprises a suede layer (1) and a shape-retaining layer (2), wherein one side surface of the suede layer (1) is provided with a plurality of suede-like protrusions (11), and the other side surface is composited with the shape-retaining layer (2) through a composite process to form an integral structure; the bending stiffness of the shape-retaining layer (2) is higher than that of the suede layer (1), and the bending stiffness of the shape-retaining layer (2) is 20mN·m to 50mN·m; and the creep rate of the shape-retaining layer (2) does not exceed 5% after 1000 hours under the conditions of an ambient temperature of -10°C to 60°C and an ambient pressure of one atmosphere.

2. The embossable composite fleece according to claim 1, characterized in that: The shape-retaining layer (2) is a modified PP film or a modified epoxy resin composite material.

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