阅读说明：本技术 一种低褶皱率数码条幅布的制备工艺 (Preparation process of digital banner fabric with low fold rate ) 是由 钱新园 于 2020-06-08 设计创作，主要内容包括：本发明公开了一种低褶皱率数码条幅布的制备工艺,属于数码条幅布领域,一种低褶皱率数码条幅布的制备工艺,通过在上浆步骤之前增加预上浆的步骤,通过粗纤维包的设置,进而可以将苎麻纤维颗粒洒落在湿润的坯布上,在此过程中,通过空心包下方对向匀速点的设置,在进行预上浆的步骤B时,对向匀速点处于不稳定状态可以发生左右错位移动形变,从而有效保证苎麻纤维颗粒缓缓随着不稳定的对向匀速点向下移动,从而便于苎麻纤维颗粒较为的均匀的洒落在坯料上,进而使得后期在上浆过程中,落在坯布上的苎麻纤维颗粒能够被封在浆膜内,进而显著增加条幅成品的韧性,有效降低条幅在使用过程中的褶皱率。(The invention discloses a preparation process of digital banner cloth with low fold rate, belonging to the field of digital banner cloth, the preparation process of digital banner cloth with low fold rate comprises the steps of pre-sizing before the sizing step, ramie fiber particles can be sprinkled on wet grey cloth through the arrangement of a coarse fiber bag, in the process, through the arrangement of opposite uniform points below a hollow core, when the pre-sizing step B is carried out, the opposite uniform points can generate left-right malposition movement deformation in an unstable state, thereby effectively ensuring that the ramie fiber particles slowly move downwards along with the unstable opposite uniform points, being convenient for the ramie fiber particles to evenly sprinkle on a blank, further ensuring that the ramie fiber particles falling on the grey cloth can be sealed in a sizing film in the sizing process at the later stage, further obviously increasing the toughness of a banner finished product, effectively reducing the wrinkle rate of the scroll in the using process.)

1. A preparation process of digital banner cloth with low fold rate is characterized in that: the method comprises the following steps:

s1, combined warping: the combined warping machine winds warp yarns of the polyester filaments on a driving shaft in parallel according to the specified length and width;

s2, shaft splicing: splicing the warped yarns as required;

s3, water-jet weaving: weaving by using a water jet loom and weft insertion by using the jet force of high-pressure water; because the weft insertion depends on water flow, hard friction does not exist in the weaving process of warp and weft filaments, and the quality of the fabric is good;

s4, shaping: firstly, pre-sizing the processed gray fabric, then coloring the pre-sized gray fabric by using a setting machine, coating the sizing agent on the colored gray fabric, heating and setting the sized gray fabric by using natural gas hot air circulation after the sizing agent is coated to form a size film, developing and drying moisture, wherein the drying temperature is about 200 ℃;

s5, calendering: heating the fabric to 80 ℃ by a calender, and enabling the fabric to achieve the effects of preventing fluff and leveling by the high pressure of the 100t calender so that the fabric is easy to print;

s6, slitting: and cutting the processed finished fabric according to the specification requirement, packaging and warehousing.

2. The preparation process of the digital banner fabric with low fold rate as claimed in claim 1, wherein the preparation process comprises the following steps: and finishing sizing synchronously while warping in the S1, wherein the warping requires equal tension of each warp yarn, the warp yarns are uniformly distributed on a beam, and the density, the arrangement and the like meet the requirements of the fabric specification.

3. The preparation process of the digital banner fabric with low fold rate as claimed in claim 1, wherein the preparation process comprises the following steps: the slurry starched in the S4 is prepared by mixing flour and water in a stirrer, cooking, and adding pigment.

4. The preparation process of the digital banner fabric with low fold rate as claimed in claim 1, wherein the preparation process comprises the following steps: the pre-sizing comprises the following steps:

A. spraying water mist on the surface of the processed grey cloth to keep the surface wettability of the grey cloth at 35-45%;

B. and rubbing the surface of the grey cloth by using the coarse fiber bag until ramie fibers in the coarse fiber bag fall off and fall on the surface of the grey cloth, and drying to enable the ramie fibers to be adhered to the surface of the grey cloth.

5. The preparation process of the digital banner fabric with low fold rate as claimed in claim 4, wherein the preparation process comprises the following steps: and the drying standard in the step B is that the surface wettability of the grey cloth is kept at 10-15%.

6. The preparation process of the digital banner fabric with low fold rate as claimed in claim 1, wherein the preparation process comprises the following steps: the coarse fiber bag comprises a hollow bag body (1), ramie fiber particles (2) are filled in the hollow bag body (1), a plurality of uniformly distributed opposite uniform-speed points (3) are fixedly connected to the inner bottom end of the hollow bag body (1), and one ends, close to each other, of the two adjacent opposite uniform-speed points (3) are in contact with each other.

7. The preparation process of the digital banner fabric with low fold rate as claimed in claim 6, wherein the preparation process comprises the following steps: the hollow pericardium is characterized in that a porous flexible layer (4) is fixedly connected to the lower end of the hollow pericardium (1), and the porous flexible layer (4) is made of a hydrophobic microporous material.

8. The preparation process of the digital banner fabric with low fold rate as claimed in claim 6, wherein the preparation process comprises the following steps: the opposite uniform-speed point (3) comprises two cross struts (31) fixedly connected with the inner bottom end of the hollow pericardium (1), hollow microspheres (32) connected to the end parts of the two cross struts (31) and non-elastic connecting ropes (33) fixedly connected between the two hollow microspheres (32), and the two cross struts (31) are distributed in a mutually crossed mode.

9. The preparation process of the digital banner fabric with low fold rate as claimed in claim 8, wherein the preparation process comprises the following steps: the hollow microspheres (32) are made of elastic hollow materials, and the filling limiting balls (5) are placed inside the hollow microspheres (32).

10. The preparation process of the digital banner fabric with low fold rate as claimed in claim 9, wherein the preparation process comprises the following steps: the filling limiting ball (5) is made of a rigid structure, and the diameter of the filling limiting ball (5) is more than 90% of the inner diameter of the hollow microsphere (32).

Technical Field

The invention relates to the field of digital banner cloth, in particular to a preparation process of digital banner cloth with low fold rate.

Background

The banner cloth is one of the most widely used cloth consumables in demand, and is mainly used for indoor and outdoor banner, flag, curtain, scenery picture and the like. Also commonly called "advertising cloth" because it uses synthetic fibers as a substrate.

The material is soft and is suitable for hanging. Banner cloth, laser banner cloth, color ribbon banner cloth, oxford banner cloth, glossy banner cloth, coated cloth, laser banner machine color ribbon, laser banner machine carbon ribbon, full automatic banner cloth, and aldley color ribbon banner machine. The advertising cloth is subdivided into: four series of laser ribbon banner cloth, manual silk screen printing banner cloth, full-automatic machine printing cloth and thermal transfer printing banner cloth have the following colors: red, blue, green, pink, yellow and so on

The special cloth for the laser scroll machine is characterized in that: the thickness is about 12 threads, the printing ink is bright, the surface is super flat, the adhesive force of a color band is good, and the printing effect is good. Product introduction: the main breadth: color 50cm, 60cm, 70cm, 90cm, 120cm, 150 cm: scarlet, golden yellow, sky blue, sapphire blue, fruit green, pink, white black, yellow. Product description: each roll is about 400 meters, which is enough meters, and the error is less than 2 percent. The color is a conventional color, and the special color needs to be customized. The woven banner cloth printed by the machine with the weft of 110D and the weft of 15 shuttles has high thickness, high fastness, hard hand feeling, no bottom penetration during silk printing and capability of customizing a variety with soft hand feeling. The method is mainly used for manually screen-printing the banner. The banner cloth uses solvent-based ink, has better waterproofness and outdoor weather resistance, and is used for outdoor picture display. In cloth portrait materials, banner cloth is the most expensive one, because of its light weight, good effect, convenient post processing and making, and outdoor picture making all adopts banner cloth.

The existing banner cloth has poor toughness, and the restoring capability after the banner cloth is deformed to generate wrinkles is poor, so that the banner cloth can wrinkle after being folded and extruded accidentally, and the using effect of the banner cloth as the advertisement cloth is influenced.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a preparation process of a digital banner fabric with low fold rate, which adds a pre-sizing step before a sizing step, through the arrangement of the coarse fiber bag, the ramie fiber particles can be sprinkled on wet grey cloth, in the process, through the arrangement of the opposite uniform-speed points below the empty pericardium, when the pre-sizing step B is carried out, the opposite uniform velocity point is in an unstable state and can be displaced and deformed left and right, thereby effectively ensuring that ramie fiber particles slowly move downwards along with the unstable opposite uniform velocity point, facilitating the ramie fiber particles to uniformly fall on the blank, further ensuring that ramie fiber particles falling on the grey cloth can be sealed in the size film in the sizing process at the later stage, thereby obviously increasing the toughness of the finished banner product and effectively reducing the wrinkle rate of the banner in the using process.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A preparation process of digital banner cloth with low fold rate comprises the following steps:

s1, combined warping: the combined warping machine winds warp yarns of the polyester filaments on a driving shaft in parallel according to the specified length and width;

s2, shaft splicing: splicing the warped yarns as required;

s3, water-jet weaving: weaving by using a water jet loom and weft insertion by using the jet force of high-pressure water; because the weft insertion depends on water flow, hard friction does not exist in the weaving process of warp and weft filaments, and the quality of the fabric is good;

s4, shaping: firstly, pre-sizing the processed gray fabric, then coloring the pre-sized gray fabric by using a setting machine, coating the sizing agent on the colored gray fabric, heating and setting the sized gray fabric by using natural gas hot air circulation after the sizing agent is coated to form a size film, developing and drying moisture, wherein the drying temperature is about 200 ℃;

s5, calendering: heating the fabric to 80 ℃ by a calender, and enabling the fabric to achieve the effects of preventing fluff and leveling by the high pressure of the 100t calender so that the fabric is easy to print;

s6, slitting: and cutting the processed finished fabric according to the specification requirement, packaging and warehousing.

Furthermore, sizing is synchronously completed while warping is performed in the S1, the warping requires that the tension of each warp is equal, the warp is uniformly distributed on a beam, the density, the arrangement and the like meet the requirements of fabric specifications, and the tightness of the finally obtained finished banner is effectively ensured to be uniform, so that the marks printed on the banner are more uniform and clear.

Further, the slurry in the step S4 is prepared by mixing flour and water in a mixer, cooking, and adding pigment.

Further, the pre-sizing comprises the following steps:

A. spraying water mist on the surface of the processed grey cloth to keep the surface wettability of the grey cloth at 35-45%;

B. and rubbing the surface of the grey cloth by using the coarse fiber bag until ramie fibers in the coarse fiber bag fall off and fall on the surface of the grey cloth, and drying to enable the ramie fibers to be adhered to the surface of the grey cloth.

Furthermore, the drying standard in the step B is that the surface wettability of the grey cloth is kept at 10-15%, so that the surface of the blank has a certain wettability, the adhesion between the ramie fibers and the blank can be effectively ensured, and the phenomenon that the ramie fibers fall off before formal sizing is effectively avoided.

Furthermore, the coarse fiber bag comprises a hollow bag body, ramie fiber particles are filled in the hollow bag body, a plurality of uniformly distributed opposite uniform-speed points are fixedly connected to the inner bottom end of the hollow bag body, and two adjacent opposite uniform-speed points are in mutual contact with one end close to each other, so that when the step B is performed, the hollow microspheres in mutual contact can play a certain limiting role, the occurrence of the condition that the ramie fiber particles fall too fast is effectively reduced, the occurrence of the condition that the ramie fiber particles are not prone to cause the phenomenon that the ramie fiber particles adhered to the local part of the grey cloth are too many due to the fact that the ramie fiber particles fall too fast is effectively controlled, the distribution uniformity of the ramie fiber particles on the grey cloth is effectively guaranteed, and the wrinkle resistance of the finished banner is better.

Furthermore, the lower end of the hollow bag is fixedly connected with the porous flexible layer, so that the damage to the grey cloth is not easily caused when the hollow bag is in friction contact with the grey cloth, the service life of the hollow bag is effectively guaranteed, the porous flexible layer is made of hydrophobic microporous materials, the porous flexible layer is not easy to absorb water on the grey cloth when the hollow bag is in friction with the grey cloth, the adhesiveness of the grey cloth to ramie fiber particles is effectively guaranteed, the tenacity of a scroll obtained in the later stage is stronger, the wrinkle resistance of the scroll is better, and the probability of the wrinkle is lower when the hollow bag is used.

Furthermore, the opposite uniform velocity points comprise two cross supporting rods fixedly connected with the inner bottom end of the hollow bag, hollow microspheres connected with the end parts of the two cross supporting rods and an inelastic connecting rope fixedly connected between the two hollow microspheres, the inelastic connecting rope can effectively limit the positions of the two hollow microspheres, so that the two hollow microspheres are not easy to displace greatly when the step B is carried out, and further, the situation that ramie fiber particles fall too fast due to too large gaps between the hollow microspheres which are in mutual contact is effectively avoided, the two cross supporting rods are distributed in a mutual crossing manner, so that the opposite uniform velocity points can be in an unstable state when the step B is carried out, the ramie fiber particles can move in a left-right staggered manner, the ramie fiber particles can move downwards through the gaps between the hollow microspheres which are in contact, the ramie fiber particles can uniformly fall on the blank, and the wrinkle resistance of the produced banner finished product is better, effectively reducing the wrinkle rate of the scroll in the using process.

Furthermore, the hollow microspheres are made of elastic hollow materials, so that when the step B is carried out, the hollow microspheres can deform to a certain degree, ramie fiber particles fall conveniently, and the filling limiting balls are placed inside the hollow microspheres.

Furthermore, the filling limiting ball is made of a rigid structure, the diameter of the filling limiting ball is more than 90% of the inner diameter of the hollow microsphere, the filling limiting ball can provide certain supporting force for the deformed hollow microsphere inside, deformation of the hollow microsphere is effectively prevented from being too large, and the falling speed of ramie fiber particles is further effectively controlled not to be too fast.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the scheme, the pre-sizing step is added before the sizing step, the coarse fiber bag is arranged, and then ramie fiber particles can be scattered on wet grey cloth, in the process, through the arrangement of opposite uniform-speed points below the hollow bag, when the pre-sizing step B is carried out, the opposite uniform-speed points can be in an unstable state and can be subjected to left-right dislocation movement and deformation, so that the ramie fiber particles are effectively guaranteed to slowly move downwards along with the unstable opposite uniform-speed points, the ramie fiber particles can be scattered on blanks uniformly, and further, the ramie fiber particles falling on the grey cloth can be sealed in a sizing film in the later sizing process, the toughness of finished banner products is obviously increased, and the wrinkle rate of the banner in the using process is effectively reduced.

(2) The sizing is finished synchronously while warping is carried out in S1, the warping requires that the tension of each warp yarn is equal, the warp yarns are uniformly distributed on a beam, the density, the arrangement and the like meet the requirements of fabric specifications, and the tightness of the finally obtained finished banner is effectively ensured to be uniform, so that the marks printed on the banner are more uniform and clear.

(3) The slurry of the S4 is prepared by mixing flour and water in a stirrer, cooking, adding pigment and mixing.

(4) The drying standard in the step B is that the surface wettability of the grey cloth is kept at 10-15%, so that the surface of the blank has a certain wettability, the adhesion between the ramie fibers and the blank can be effectively ensured, and the phenomenon that the ramie fibers fall off before formal sizing is effectively avoided.

(5) The coarse fiber package includes empty pericardium, the intussuseption of hollow package is filled with ramie fiber granule, hollow package inner bottom end fixedly connected with a plurality of evenly distributed's subtend uniform velocity point, two adjacent subtend uniform velocity point one end contact each other that is close to each other, make when carrying out step B, the hollow microsphere of mutual contact can play certain limiting action, effectively reduce the emergence of the too fast condition that ramie fiber granule dropped, and then effective control ramie fiber granule is difficult for causing the too many condition of ramie fiber granule of adhesion on the grey cloth part because of the whereabouts is too fast to take place, effectively guarantee the distribution uniformity of ramie fiber granule on the grey cloth, and then make the off-the-shelf anti fold of scroll nature better.

(6) The lower end of the hollow bag is fixedly connected with the porous flexible layer, so that the damage to the gray fabric is not easily caused when the hollow bag is in friction contact with the gray fabric, the service life of the hollow bag is effectively guaranteed, the porous flexible layer is made of hydrophobic microporous materials, the hollow bag is not easy to absorb moisture on the gray fabric when the hollow bag is in friction with the gray fabric, the adhesiveness of the gray fabric to ramie fiber particles is effectively guaranteed, the tenacity of a scroll obtained in the later stage is stronger, the wrinkle resistance of the scroll is better, and the probability of the wrinkle is lower when the hollow bag is used.

(7) The opposite uniform velocity points comprise two cross supporting rods fixedly connected with the inner bottom end of the hollow bag, hollow microspheres connected with the end parts of the two cross supporting rods and an inelastic connecting rope fixedly connected between the two hollow microspheres, the inelastic connecting rope can effectively limit the positions of the two hollow microspheres, so that the two hollow microspheres are not easy to generate larger displacement when the step B is carried out, the situation that ramie fiber particles fall too fast due to too large gaps between the hollow microspheres in mutual contact is effectively avoided, the two cross supporting rods are mutually and crossly distributed, the opposite uniform velocity points can be in an unstable state when the step B is carried out, the ramie fiber particles can move leftwards and rightwards in a staggered manner, the ramie fiber particles can conveniently pass through the gaps between the hollow microspheres in mutual contact to move downwards, the ramie fiber particles can be conveniently and uniformly sprinkled on a blank, and the wrinkle resistance of a produced strip product is better, effectively reducing the wrinkle rate of the scroll in the using process.

(8) The hollow microspheres are made of elastic hollow materials, so that when the step B is carried out, the hollow microspheres can deform to a certain degree, ramie fiber particles fall conveniently, and the filling limiting balls are placed inside the hollow microspheres.

(9) The spacing ball of intussuseption is made for rigid structure, and the spacing ball diameter of intussuseption is more than 90% of hollow microsphere internal diameter, and the spacing ball of intussuseption can provide certain holding power for the hollow microsphere of deformation in inside, and then effectively guarantees that the deformation volume of hollow microsphere can not be too big, and further effective control ramie fiber granule's falling speed can not be too fast.

Drawings

FIG. 1 is a principal flow diagram of the present invention;

FIG. 2 is a schematic structural view of a finished banner fabric of the present invention;

FIG. 3 is a schematic diagram of the construction of a coarse fiber bale of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic structural diagram of an opposite uniform velocity point according to the present invention.

The reference numbers in the figures illustrate:

1 hollow pericardium, 2 ramie fiber particles, 3 opposite uniform-speed points, 31 cross struts, 32 hollow microspheres, 33 inelastic connecting ropes, 4 porous soft layers and 5 filling limiting balls.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.