阅读说明：本技术 一种结构稳固式合成革及其制备方法 (Stable-structure synthetic leather and preparation method thereof ) 是由 刘以东 徐广梅 何双跃 崔庆 于 2021-07-23 设计创作，主要内容包括：本发明公开了一种结构稳固式合成革及其制备方法,包括基材层、装饰层、穿接纤维、封装层；本发明为了增加结构强度,在基材层的上端面设置多个均匀分布的基材层凸起柱,在装饰层的下端面设置多个均匀分布的装饰层凸起柱,将装饰层覆盖安装于基材层上端,使得多个装饰层凸起柱和多个基材层凸起柱依次相间分布,并且将多个装饰层凸起柱和多个基材层凸起柱通过多个穿接纤维进行穿接定位,实现穿接,将基材层和装饰层的四周通过封装层进行封装,使得整个结构更加稳固。(The invention discloses a structure-stabilized synthetic leather and a preparation method thereof, wherein the structure-stabilized synthetic leather comprises a substrate layer, a decorative layer, cross-linking fibers and a packaging layer; in order to increase the structural strength, the upper end surface of the substrate layer is provided with a plurality of uniformly distributed substrate layer protruding columns, the lower end surface of the decoration layer is provided with a plurality of uniformly distributed decoration layer protruding columns, the decoration layer is covered and installed at the upper end of the substrate layer, so that the plurality of decoration layer protruding columns and the plurality of substrate layer protruding columns are sequentially distributed at intervals, the plurality of decoration layer protruding columns and the plurality of substrate layer protruding columns are connected in a penetrating mode through a plurality of penetrating fibers for positioning, penetrating connection is achieved, the periphery of the substrate layer and the periphery of the decoration layer are packaged through the packaging layer, and the whole structure is more stable.)

1. The synthetic leather with a stable structure is characterized by comprising a substrate layer, a decorative layer, cross-linking fibers and a packaging layer; the upper end surface of the substrate layer is provided with a plurality of substrate layer protruding columns which are uniformly distributed; the substrate layer protruding columns are parallel to each other, and substrate layer spacing grooves are formed among the substrate layer protruding columns; the lower end surface of the decorative layer is provided with a plurality of uniformly distributed decorative layer raised columns; the decorative layer protruding columns are parallel to each other, and decorative layer spacing grooves are formed among the decorative layer protruding columns; the decorative layer is covered and arranged at the upper end of the base material layer; the plurality of decorative layer protruding columns and the plurality of substrate layer protruding columns are distributed at intervals in sequence; air gaps are formed between the plurality of decorative layer protruding columns and the plurality of substrate layer protruding columns which are distributed alternately in sequence; the decorative layer protruding columns are butted in the substrate layer spacing grooves, and the substrate layer protruding columns are butted in the decorative layer spacing grooves; the plurality of decorative layer protruding columns and the plurality of base material layer protruding columns are positioned in a penetrating mode through the plurality of penetrating fibers; the packaging layer is packaged and connected to the periphery of the base material layer and the periphery of the decoration layer; the cross-under fibers are glass fiber yarns coated with PVC resin.

2. The structurally-stabilized synthetic leather according to claim 1, wherein the substrate layer comprises the following components in parts by weight: 100 parts of PVC resin, 2-3 parts of stabilizer, 2-5 parts of foaming agent and 20-30 parts of calcium carbonate; the decorative layer comprises the following components in parts by weight: 100 parts of PVC resin, 30-40 parts of plasticizer and 5-10 parts of color cake; the packaging layer comprises the following components in parts by weight: 100 parts of PVC resin, 20 to 30 parts of flax fiber powder and 50 to 60 parts of plasticizer.

3. A structurally sound synthetic leather according to claim 2, wherein said plasticizer is dioctyl DOP phthalate.

4. The structurally stabilized synthetic leather of claim 2, wherein said PVC resin is a tri-type PVC resin.

5. A method of preparing a structurally stable synthetic leather according to claim 2, characterized by the steps of:

s1, preparing a substrate layer: feeding each component in the substrate layer into a stirrer for stirring, mixing and open-milling each component of the stirred substrate layer to obtain a paste of the substrate layer, feeding the paste of the substrate layer into a mold of the substrate layer for compacting, cooling and demolding to form the substrate layer with a plurality of uniformly distributed protruding columns of the substrate layer on the upper end surface;

s2, preparing a decorative layer: feeding the components in the decorative layer into a stirrer for stirring, mixing and open milling the stirred components of the decorative layer to obtain a decorative layer paste, feeding the decorative layer paste into a decorative layer die for compacting, cooling and demoulding to form the decorative layer with a plurality of uniformly distributed decorative layer protruding columns on the upper end surface;

s3, preparing cross-linking fibers: PVC resin is coated on the glass fiber yarns, and the cross-linking fibers are obtained after cooling;

s4, cross-under: covering and installing the decorative layer on the upper end of the substrate layer, then placing the decorative layer on the heating plate for heating, wherein the decorative layer protruding columns and the substrate layer protruding columns are sequentially distributed at intervals, air gaps are formed between the decorative layer protruding columns and the substrate layer protruding columns in sequential distribution at intervals, then sequentially penetrating and connecting the penetrating and connecting fibers on the decorative layer protruding columns and the substrate layer protruding columns, penetrating and connecting the decorative layer protruding columns and the substrate layer protruding columns through the penetrating and connecting fibers, and stopping heating after the penetrating and connecting are finished;

s5, packaging: and (3) feeding the components in the packaging layer into a stirrer for stirring, mixing and open-milling the stirred components of the packaging layer to obtain a packaging layer paste, coating the packaging layer paste on the periphery of the decorative layer and the base material layer, and cooling to obtain the synthetic leather.

6. The method of producing a structurally stable synthetic leather according to claim 5, wherein the temperature of the heating plate in step S4 is 70 to 80 ℃.

Technical Field

The invention relates to synthetic leather with a stable structure and a preparation method thereof.

Background

With the continuous development of society, the living standard of people is increasingly improved, and the requirements of people on the living environment are also increasingly improved. At present, the cushion for indoor wall decoration and sofa seat is mainly used for decorating synthetic leather and natural leather, and as the natural leather is restricted by natural conditions, the consciousness of protecting animals is gradually strengthened all over the world, and the natural leather is gradually reduced year by year. At present, the domestic synthetic leather of decorating of development on the market generally includes decorative layer and substrate layer, and decorative layer and substrate layer are formed through mixing of various modifiers of PVC resin mixture, then carry out the hot pressing laminating with decorative layer and substrate layer, but, the gas permeability of such decorative leather is poor, and the use impression is not good, and decorative layer and substrate layer laminating insecure moreover, and the structure steadiness is poor.

Disclosure of Invention

Aiming at the defects of the prior art, the invention solves the problems that: provides the structurally stable synthetic leather with good structural stability and air permeability and the preparation method thereof.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a synthetic leather with a stable structure comprises a substrate layer, a decorative layer, cross-linking fibers and a packaging layer; the upper end surface of the substrate layer is provided with a plurality of substrate layer protruding columns which are uniformly distributed; the substrate layer protruding columns are parallel to each other, and substrate layer spacing grooves are formed among the substrate layer protruding columns; the lower end surface of the decorative layer is provided with a plurality of uniformly distributed decorative layer raised columns; the decorative layer protruding columns are parallel to each other, and decorative layer spacing grooves are formed among the decorative layer protruding columns; the decorative layer is covered and arranged at the upper end of the base material layer; the plurality of decorative layer protruding columns and the plurality of substrate layer protruding columns are distributed at intervals in sequence; air gaps are formed between the plurality of decorative layer protruding columns and the plurality of substrate layer protruding columns which are distributed alternately in sequence; the decorative layer protruding columns are butted in the substrate layer spacing grooves, and the substrate layer protruding columns are butted in the decorative layer spacing grooves; the plurality of decorative layer protruding columns and the plurality of base material layer protruding columns are positioned in a penetrating mode through the plurality of penetrating fibers; the packaging layer is packaged and connected to the periphery of the base material layer and the periphery of the decoration layer; the cross-under fibers are glass fiber yarns coated with PVC resin.

Further, the substrate layer comprises the following components in parts by weight: 100 parts of PVC resin, 2-3 parts of stabilizer, 2-5 parts of foaming agent and 20-30 parts of calcium carbonate; the decorative layer comprises the following components in parts by weight: 100 parts of PVC resin, 30-40 parts of plasticizer and 5-10 parts of color cake; the packaging layer comprises the following components in parts by weight: 100 parts of PVC resin, 20 to 30 parts of flax fiber powder and 50 to 60 parts of plasticizer.

Further, the plasticizer is DOP dioctyl phthalate.

Further, the PVC resin is a three-type PVC resin.

A preparation method of synthetic leather with stable structure comprises the following steps:

s1, preparing a substrate layer: feeding each component in the substrate layer into a stirrer for stirring, mixing and open-milling each component of the stirred substrate layer to obtain a paste of the substrate layer, feeding the paste of the substrate layer into a mold of the substrate layer for compacting, cooling and demolding to form the substrate layer with a plurality of uniformly distributed protruding columns of the substrate layer on the upper end surface;

s2, preparing a decorative layer: feeding the components in the decorative layer into a stirrer for stirring, mixing and open milling the stirred components of the decorative layer to obtain a decorative layer paste, feeding the decorative layer paste into a decorative layer die for compacting, cooling and demoulding to form the decorative layer with a plurality of uniformly distributed decorative layer protruding columns on the upper end surface;

s3, preparing cross-linking fibers: PVC resin is coated on the glass fiber yarns, and the cross-linking fibers are obtained after cooling;

s4, cross-under: covering and installing the decorative layer on the upper end of the substrate layer, then placing the decorative layer on the heating plate for heating, wherein the decorative layer protruding columns and the substrate layer protruding columns are sequentially distributed at intervals, air gaps are formed between the decorative layer protruding columns and the substrate layer protruding columns in sequential distribution at intervals, then sequentially penetrating and connecting the penetrating and connecting fibers on the decorative layer protruding columns and the substrate layer protruding columns, penetrating and connecting the decorative layer protruding columns and the substrate layer protruding columns through the penetrating and connecting fibers, and stopping heating after the penetrating and connecting are finished;

s5, packaging: and (3) feeding the components in the packaging layer into a stirrer for stirring, mixing and open-milling the stirred components of the packaging layer to obtain a packaging layer paste, coating the packaging layer paste on the periphery of the decorative layer and the base material layer, and cooling to obtain the synthetic leather.

Further, the temperature of the heating plate in the step S4 is 70 to 80 ℃.

The invention has the advantages of

1. In order to increase the structural strength, the upper end surface of the substrate layer is provided with a plurality of uniformly distributed substrate layer protruding columns, the lower end surface of the decoration layer is provided with a plurality of uniformly distributed decoration layer protruding columns, the decoration layer is covered and installed at the upper end of the substrate layer, so that the plurality of decoration layer protruding columns and the plurality of substrate layer protruding columns are sequentially distributed at intervals, the plurality of decoration layer protruding columns and the plurality of substrate layer protruding columns are connected in a penetrating mode through a plurality of penetrating fibers for positioning, penetrating connection is achieved, the periphery of the substrate layer and the periphery of the decoration layer are packaged through the packaging layer, and the whole structure is more stable.

2. According to the invention, the substrate layer spacing grooves are formed among the substrate layer protruding columns, the decorative layer spacing grooves are formed among the decorative layer protruding columns, so that air gaps are formed among the decorative layer protruding columns and the substrate layer protruding columns in sequence in a staggered manner, air guide gaps are formed inside the substrate layer and the decorative layer, and flax fibers are added into the packaging layer, so that the packaging layer has certain air permeability, and thus, air flow is formed between the inside of the substrate layer and the decorative layer and the outside, and the air permeability and the moisture exhaust performance of the whole material are improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged schematic view of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1 and 2, the synthetic leather with a stable structure comprises a substrate layer 1, a decoration layer 2, cross-linking fibers 3 and a packaging layer 4; the upper end face of the substrate layer 1 is provided with a plurality of substrate layer protruding columns 11 which are uniformly distributed; the substrate layer protruding columns 11 are parallel to each other, and substrate layer spacing grooves 12 are formed among the substrate layer protruding columns 11; the lower end surface of the decorative layer 2 is provided with a plurality of decorative layer convex columns 21 which are uniformly distributed; the decorative layer protruding columns 21 are parallel to each other, and decorative layer spacing grooves 22 are formed among the decorative layer protruding columns 21; the decorative layer 2 is covered and arranged at the upper end of the substrate layer 1; the decorative layer protruding columns 21 and the base material layer protruding columns 11 are distributed at intervals in sequence; air gaps 5 are formed between the decorative layer protruding columns 21 and the base material layer protruding columns 11 in sequence in a distributed mode at intervals; the decorative layer protruding column 21 is butted in the substrate layer spacing groove 12, and the substrate layer protruding column 11 is butted in the decorative layer spacing groove 22; the decorative layer protruding columns 21 and the base material layer protruding columns 11 are positioned in a penetrating mode through penetrating fibers 3; the packaging layer 4 is packaged and connected to the periphery of the substrate layer 1 and the decoration layer 2; the cross-under fibers 3 are glass fiber yarns coated with PVC resin. The substrate layer comprises the following components in parts by weight: 100 parts of PVC resin, 2 parts of stabilizer, 2 parts of foaming agent and 20 parts of calcium carbonate; the decorative layer comprises the following components in parts by weight: 100 parts of PVC resin, 30 parts of plasticizer and 5 parts of color cake; the packaging layer comprises the following components in parts by weight: 100 parts of PVC resin, 20 parts of flax fiber powder and 50 parts of plasticizer. Further, the plasticizer is DOP dioctyl phthalate. Further, the PVC resin is a three-type PVC resin.

Example 2

As shown in fig. 1 and 2, the synthetic leather with a stable structure comprises a substrate layer 1, a decoration layer 2, cross-linking fibers 3 and a packaging layer 4; the upper end face of the substrate layer 1 is provided with a plurality of substrate layer protruding columns 11 which are uniformly distributed; the substrate layer protruding columns 11 are parallel to each other, and substrate layer spacing grooves 12 are formed among the substrate layer protruding columns 11; the lower end surface of the decorative layer 2 is provided with a plurality of decorative layer convex columns 21 which are uniformly distributed; the decorative layer protruding columns 21 are parallel to each other, and decorative layer spacing grooves 22 are formed among the decorative layer protruding columns 21; the decorative layer 2 is covered and arranged at the upper end of the substrate layer 1; the decorative layer protruding columns 21 and the base material layer protruding columns 11 are distributed at intervals in sequence; air gaps 5 are formed between the decorative layer protruding columns 21 and the base material layer protruding columns 11 in sequence in a distributed mode at intervals; the decorative layer protruding column 21 is butted in the substrate layer spacing groove 12, and the substrate layer protruding column 11 is butted in the decorative layer spacing groove 22; the decorative layer protruding columns 21 and the base material layer protruding columns 11 are positioned in a penetrating mode through penetrating fibers 3; the packaging layer 4 is packaged and connected to the periphery of the substrate layer 1 and the decoration layer 2; the cross-under fibers 3 are glass fiber yarns coated with PVC resin. The substrate layer comprises the following components in parts by weight: 100 parts of PVC resin, 3 parts of stabilizer, 4 parts of foaming agent and 25 parts of calcium carbonate; the decorative layer comprises the following components in parts by weight: 100 parts of PVC resin, 35 parts of plasticizer and 7 parts of color cake; the packaging layer comprises the following components in parts by weight: 100 parts of PVC resin, 25 parts of flax fiber powder and 55 parts of plasticizer. Further, the plasticizer is DOP dioctyl phthalate. Further, the PVC resin is a three-type PVC resin.

Example 3

As shown in fig. 1 and 2, the synthetic leather with a stable structure comprises a substrate layer 1, a decoration layer 2, cross-linking fibers 3 and a packaging layer 4; the upper end face of the substrate layer 1 is provided with a plurality of substrate layer protruding columns 11 which are uniformly distributed; the substrate layer protruding columns 11 are parallel to each other, and substrate layer spacing grooves 12 are formed among the substrate layer protruding columns 11; the lower end surface of the decorative layer 2 is provided with a plurality of decorative layer convex columns 21 which are uniformly distributed; the decorative layer protruding columns 21 are parallel to each other, and decorative layer spacing grooves 22 are formed among the decorative layer protruding columns 21; the decorative layer 2 is covered and arranged at the upper end of the substrate layer 1; the decorative layer protruding columns 21 and the base material layer protruding columns 11 are distributed at intervals in sequence; air gaps 5 are formed between the decorative layer protruding columns 21 and the base material layer protruding columns 11 in sequence in a distributed mode at intervals; the decorative layer protruding column 21 is butted in the substrate layer spacing groove 12, and the substrate layer protruding column 11 is butted in the decorative layer spacing groove 22; the decorative layer protruding columns 21 and the base material layer protruding columns 11 are positioned in a penetrating mode through penetrating fibers 3; the packaging layer 4 is packaged and connected to the periphery of the substrate layer 1 and the decoration layer 2; the cross-under fibers 3 are glass fiber yarns coated with PVC resin. The substrate layer comprises the following components in parts by weight: 100 parts of PVC resin, 2 parts of stabilizer, 5 parts of foaming agent and 30 parts of calcium carbonate; the decorative layer comprises the following components in parts by weight: 100 parts of PVC resin, 40 parts of plasticizer and 10 parts of color cake; the packaging layer comprises the following components in parts by weight: 100 parts of PVC resin, 30 parts of flax fiber powder and 60 parts of plasticizer. Further, the plasticizer is DOP dioctyl phthalate. Further, the PVC resin is a three-type PVC resin.

Example 4

As shown in fig. 1 and 2, a method for preparing a structurally stable synthetic leather comprises the following steps:

s1, preparing a substrate layer 1: sending each component in the substrate layer into a stirrer for stirring, mixing and open-milling each component of the stirred substrate layer to obtain a paste of the substrate layer, sending the paste of the substrate layer into a mold of the substrate layer for compacting, cooling and demolding to form the substrate layer with a plurality of uniformly distributed protruding columns of the substrate layer on the upper end surface.

S2, preparing a decorative layer 2: and feeding the components in the decorative layer into a stirrer for stirring, mixing and open milling the stirred components of the decorative layer to obtain a decorative layer paste, feeding the decorative layer paste into a decorative layer die for compacting, cooling and demolding to form the decorative layer with a plurality of uniformly distributed decorative layer protruding columns on the upper end surface.

S3, preparing the cross-linking fibers 3: and (3) coating PVC resin on the glass fiber yarns, and cooling to obtain the cross-under fibers.

S4, cross-under: the decoration layer 2 is covered and installed at the upper end of the substrate layer 1 and then placed on the heating plate to be heated, the decoration layer protruding columns 21 and the substrate layer protruding columns 11 are sequentially distributed at intervals, air gaps 5 are formed between the decoration layer protruding columns 21 and the substrate layer protruding columns 11 in sequential distribution at intervals, then the cross-under fibers are sequentially connected to the decoration layer protruding columns and the substrate layer protruding columns in a cross-under mode, the decoration layer protruding columns and the substrate layer protruding columns are connected in a cross-under mode through the cross-under fibers, and heating is stopped after the cross-under is finished; the temperature of the heating plate in step S4 is 70 to 80 ℃, preferably 75 ℃, which is beneficial for facilitating the insertion of the cross-linking fibers after the softening of the substrate layer and the decoration layer.

S5, packaging: and (3) feeding the components in the packaging layer into a stirrer for stirring, mixing and open-milling the stirred components of the packaging layer to obtain a packaging layer paste, coating the packaging layer paste on the periphery of the decorative layer and the base material layer, and cooling to obtain the synthetic leather.

In order to increase the structural strength, a plurality of uniformly distributed substrate layer protruding columns 11 are arranged on the upper end surface of a substrate layer 1, a plurality of uniformly distributed decorative layer protruding columns 21 are arranged on the lower end surface of a decorative layer 2, the decorative layer 2 is covered and installed on the upper end of the substrate layer 1, the decorative layer protruding columns 21 and the substrate layer protruding columns 11 are sequentially distributed at intervals, the decorative layer protruding columns 21 and the substrate layer protruding columns 11 are positioned in a penetrating mode through a plurality of penetrating fibers 3, penetrating connection is achieved, the periphery of the substrate layer 1 and the periphery of the decorative layer 2 are packaged through a packaging layer 4, and the whole structure is more stable.

According to the invention, the substrate layer spacing grooves 12 are formed among the substrate layer protruding columns 11, the decorative layer spacing grooves 22 are formed among the decorative layer protruding columns 21, so that the air gaps 5 are formed among the decorative layer protruding columns 21 and the substrate layer protruding columns 11 in sequence in an alternate distribution manner, so that the air guide gaps are formed inside the substrate layer 1 and the decorative layer 2, and in addition, the flax fibers are added into the packaging layer 4, so that the packaging layer 4 has certain air permeability, so that the air flow is formed between the inside of the substrate layer 1 and the decorative layer 2 and the outside, and the air permeability and the moisture exhaust property of the whole material are improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.