阅读说明：本技术 一种再生纤维素类织物后整理剂及后整理工艺 (After-finishing agent and after-finishing process for regenerated cellulose fabric ) 是由 王力民 孙红玉 刘晓敏 盛春英 贾荣霞 王静茹 孙沙沙 李兴华 于琦 刘玉娥 郭 于 2020-08-21 设计创作，主要内容包括：本发明涉及纺织技术领域,具体涉及一种再生纤维素类织物后整理剂及后整理工艺,所述后整理剂包括防缩防皱加工树脂、催化剂、纤维保护剂、水性聚氨酯和柔软剂；所述后整理工艺为将织物浸于前述后整理剂中轧树脂,烘干后在纤维不膨化状态下焙烘交联。使用本发明后整理剂及后整理工艺能防止再生纤维素类织物湿水溶胀发硬,提高湿强强度,可大大提升再生纤维素类织物的服用性能,为再生纤维素类织物的广泛应用奠定基础。(The invention relates to the technical field of spinning, in particular to a post-finishing agent and a post-finishing process for regenerated cellulose fabrics, wherein the post-finishing agent comprises shrink-proof and crease-resistant processing resin, a catalyst, a fiber protective agent, waterborne polyurethane and a softening agent; the post-finishing process comprises the steps of soaking the fabric in the post-finishing agent, rolling resin, drying, and then baking and crosslinking under the condition that the fiber is not expanded. The after-finishing agent and the after-finishing process can prevent the regenerated cellulose fabric from swelling and hardening by wet water, improve the wet strength, greatly improve the wearability of the regenerated cellulose fabric and lay a foundation for the wide application of the regenerated cellulose fabric.)

1. The post-finishing agent for the regenerated cellulose fabric is characterized by comprising shrink-proof and crease-resistant processing resin, a catalyst, a fiber protective agent, waterborne polyurethane and a softening agent.

2. The after-finishing agent of claim 1, wherein the after-finishing agent comprises 20-30g/L of shrink-proof and crease-resistant processing resin, 20-30g/L of catalyst, 30-40g/L of fiber protective agent, 20-30g/L of waterborne polyurethane and 25-50g/L of softening agent.

3. The afterfinish of claim 1 wherein said shrink and crease resistant processing resin is a GL-45 resin.

4. The afterfinish of claim 1, wherein said catalyst is an F-M catalyst.

5. The afterfinish of claim 1, wherein said fiber protectant is a PA-6 fiber protectant.

6. The afterfinish of claim 1 wherein said softening agent is HF-10R and silicone oil CGF softening agents.

7. An after-finishing process of a regenerated cellulose fabric, which is characterized in that the after-finishing process comprises the steps of soaking the fabric in the after-finishing agent according to any one of claims 1 to 6, rolling resin, drying, and then baking and crosslinking under a fiber non-swelling state.

8. The finishing process of claim 7, wherein in the resin rolling step, the rolling residual ratio is 60-70%.

9. The after-finishing process of claim 7, wherein in the drying step, the drying temperature is 80-110 ℃.

10. The finishing process according to claim 7, wherein in the baking step, the baking temperature is 175 ℃ and the baking time is 3 min.

Technical Field

The invention relates to the technical field of spinning, in particular to a post-finishing agent and a post-finishing process for regenerated cellulose fabrics.

Background

With the development of society and the continuous progress of science and technology, people's environmental protection consciousness is gradually strengthened, the requirements for textiles also present the trend of nature, diversification and functionalization, and the regenerated cellulose fiber is widely favored by people due to the biodegradable characteristic. The appearance of the regenerated cellulose fiber also relieves the situation of the lack of the current social resources, becomes an essential important component for the composition of the fabric, and has wide development prospect.

The regenerated cellulose fiber refers to a fiber made of natural cellulose such as wood, cotton linter, hemp, bamboo and the like, and comprises viscose fiber, modal fiber, cuprammonium fiber, bamboo fiber, tencel fiber and the like, wherein common viscose fiber, high wet modulus viscose fiber, bamboo fiber, acetate fiber, regenerated hemp fiber and the like are used frequently.

The regenerated cellulose fabric woven by the regenerated cellulose fiber has soft hand feeling, drapability, elegance, moisture absorption, air permeability and good comfort performance, and is suitable for manufacturing underwear and bed textiles. However, the regenerated cellulose fabric has the following disadvantages: because the moisture regain of the regenerated cellulose fabric of the fabric is 12-15 percent, the swelling degree in water is more than 50 percent and can reach 140 percent at most, the regenerated cellulose fabric is easy to absorb moisture and swell in the washing process, and the hand feeling of the fabric is hard; in the aspect of strength, the strength of the fabric is reduced by about 40% after being wetted, the fabric is easy to deform and difficult to recover under a small load and has poor elasticity, and the fabric is easy to damage under severe washing conditions, so the fabric is easy to wrinkle and has poor wear resistance.

In order to improve the problems of hard washing and reduced strength of regenerated cellulose fabrics and improve the wearability of the regenerated cellulose fabrics, it is necessary to explore the finishing process of the regenerated cellulose fabrics so as to meet the wider application range of the regenerated cellulose fabrics.

Disclosure of Invention

The invention provides an after-finishing agent and an after-finishing process for regenerated cellulose fabrics, aiming at the technical problems of hard washing and strength reduction of the existing regenerated cellulose fabrics.

In a first aspect, the invention provides a post-finishing agent for regenerated cellulose fabric, which comprises shrink-proof and crease-resistant processing resin, a catalyst, a fiber protective agent, waterborne polyurethane and a softening agent.

Further, the after-finishing agent comprises 20-30g/L of shrink-proof and crease-resistant processing resin, 20-30g/L of catalyst, 30-40g/L of fiber protective agent, 20-30g/L of waterborne polyurethane and 25-50g/L of softening agent.

Further, the shrinkproof and crease-resistant processing resin is GL-45 resin.

Further, the catalyst is an F-M catalyst.

In a second aspect, the invention provides an after-finishing process for regenerated cellulose fabrics, which comprises the steps of soaking the fabrics in the after-finishing agent, rolling resin, drying, and then baking and crosslinking under a non-swelling state of fibers.

Further, in the step of rolling the resin, the rolling allowance is 60-70%. The rolling allowance rate is suitable for a workshop after-finishing process, and the working efficiency of continuous production is improved while energy is saved during drying.

Further, in the drying step, the drying temperature is 80-110 ℃. The drying temperature range is wide, and the drying temperature range can be matched with other after-finishing process drying processes.

Further, in the baking step, the baking step is 175 ℃. At this temperature, the resin cross-linking reacts sufficiently, being the optimum baking temperature.

Further, in the baking step, the baking time is 3 min. Under the reaction time, the resin is fully crosslinked, which is beneficial to the high-temperature crosslinking of the resin and has higher film-forming property.

The beneficial effect of the invention is that,

the after-finishing agent and the after-finishing process for the regenerated cellulose fabric can be applied to the after-finishing of pure-spinning or blended regenerated cellulose fabrics, and have wide application range and unlimited varieties; within the limited range, the use amount of each component of the after-finishing agent and the parameters of each step of the after-finishing process can be adjusted according to specific requirements, and the flexibility is realized.

The post-finishing agent for the regenerated cellulose fabric comprises shrink-proof and crease-resistant processing resin, a catalyst, a fiber protective agent, waterborne polyurethane and a softening agent, wherein the shrink-proof and crease-resistant processing resin can improve the crease-resistant and shrink-proof performance of the regenerated cellulose fabric; the catalyst can improve the resin crosslinking reaction rate, thereby improving the production efficiency; the fiber protective agent can prevent the fiber from being damaged, plays a role in protecting the regenerated cellulose fiber and improves the wet strength of the regenerated cellulose fabric; the waterborne polyurethane is favorable for forming a film on the surface of the fiber through crosslinking; the softening agent enables the fabric to have fluffy and soft hand feeling and improves the wearability.

The post-finishing process for the regenerated cellulose fabric provided by the invention adopts a resin crosslinking process, so that the fiber surface of the regenerated cellulose fabric is formed into a film, the fibers are prevented from swelling and hardening after absorbing water, the operation is simple, and compared with the conventional post-finishing process, the process flow is basically consistent, and no special equipment is needed.

After the after-finishing agent and the after-finishing process are adopted for treatment, the regenerated cellulose fabric has good softening performance in the washing process, the phenomenon that the bamboo fabric absorbs water and swells in water can be thoroughly changed, and scratching is avoided; the fabric has good crease resistance and wear resistance, and the fabric after washing has drapability; the wet strength of the fabric is obviously improved, and the cohesive force among yarns and the anti-slip performance of the fabric are effectively improved; the whiteness and the color of the fabric are not affected;

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.