Preparation method of pure spinning polylactic acid fiber functional bedding

Abstract

The invention provides a preparation method of a pure-spinning polylactic acid fiber functional bedding, and belongs to the technical field of textile, the polylactic acid fiber functional bedding comprises a fabric and / or a filler, and the fabric and the filler are both made of polylactic acid fibers. The prepared polylactic acid bedding is completely prepared from 100% polylactic acid fibers, is free of sensitization, skin-friendly, antibacterial, free of peculiar smell, warm-keeping and breathable, avoids potential pathogenic hazards caused by the fact that microfibers are inhaled into a human body during sleeping, is flame-retardant, less in smoke, non-toxic and extinguished after being away from fire, and has a good application prospect. And moreover, the green and environment-friendly property that 100% of all-polylactic acid fibers can be recycled and reused is realized.

Description

[0001] This application is a divisional application of Chinese patent application No. 202310327490.5, filed on March 30, 2023, entitled "A functional bedding product made of pure spun polylactic acid fiber and its preparation method". Technical Field

[0002] This invention belongs to the field of textile technology, and specifically relates to a method for preparing functional bedding made of pure polylactic acid fiber. Background Technology

[0003] National authorities have been advocating for the recycling and reuse of waste textiles for many years, but due to the prevalence of blended fabrics in civilian textiles, which make recycling and separation difficult, progress has been minimal. Home textiles are used in concentrated quantities; a single set of bedding for a double bed—including a sheet, quilt cover, pillowcase, and cushions—can weigh approximately 10 kilograms in total. Currently, there is a lack of eco-friendly bedding sets on the market that are both healthy and comfortable, and easy to centrally and chemically recycle.

[0004] Polylactic acid (PLA) fiber is made from green plants rich in plant sugars, such as corn stalks, straw, and cassava. After fermentation to produce lactic acid, it is purified, polymerized, and melt-spun. PLA fiber is a bio-based chemical synthetic fiber whose raw materials can be grown, whose waste can be recycled and reused, and which is also biodegradable. It can decompose into carbon dioxide and water in soil or seawater through microbial action. When burned, it produces little smoke and is non-toxic, causing no pollution, making it a sustainable ecological fiber. Its fabrics have a good hand feel, are antibacterial and skin-friendly, breathable, odor-resistant, easy to wash, and quick-drying, making them suitable for various bedding products worn close to the skin. Currently, no other company has used 100% PLA fiber in bedding sets. Summary of the Invention

[0005] The purpose of this invention is to provide a method for preparing functional bedding made entirely of 100% polylactic acid (PLA) fiber. The technical solution includes the following steps:

[0006] Choose 100% polylactic acid fiber as the sole material for bedding fabrics and / or fillings;

[0007] Polylactic acid filaments are woven into bedding fabrics using knitting or weaving techniques.

[0008] Polylactic acid bicomponent fibers and monocomponent fibers are sequentially processed through opening, mixing and carding, web laying, heat drying, cooling, edge trimming and rolling to make bedding filling;

[0009] Both the fabric and the filling are made of pure polylactic acid fiber, achieving a combination of material uniformity and chemical recyclability.

[0010] Furthermore, the polylactic acid filament is one of DTY, FDY or flat profiled filament, and is made entirely from polylactic acid raw materials.

[0011] Furthermore, the knitting is carried out using a circular knitting machine with knitting parameters of 36 inches / 32 needles, and the polylactic acid filament used is DTY 75D / 72-144F.

[0012] Furthermore, the shuttle weaving is carried out using one of the following: a wide-width water-jet loom, an air-jet loom, or a large rapier jacquard loom, and no other fibers are mixed in during the weaving process.

[0013] Furthermore, during the preparation of the filler, the polylactic acid bicomponent and the single-component fiber are uniformly mixed during the opening and combing stages to ensure the overall structural consistency and thermal bonding uniformity of the filler.

[0014] Furthermore, when the bedding is a comforter core, its fabric is woven on a circular knitting machine, and the filling is opened, laid out, heated, cooled and shaped before being trimmed and rolled up. All processes use pure polylactic acid fiber.

[0015] Furthermore, when the bedding is a duvet cover, pillowcase, or sheet, its fabric is woven using a woven process and can be brushed and embossed after processing. No non-polylactic acid materials are introduced in any of the processing steps.

[0016] Furthermore, when the bedding is a pillow core, its filling is formed by a ball-rolling process after being opened, mixed and combed, and the fabric is woven on a shuttle-weaving water-jet loom, maintaining a 100% polylactic acid fiber composition throughout the process.

[0017] Furthermore, no other fiber materials are added in any of the preparation steps, ensuring that the bedding can be directly chemically recycled or naturally degraded after use, achieving green synergy throughout its entire life cycle.

[0018] Furthermore, the weaving process of the fabric is matched with the molding process of the filling, so that the final bedding achieves the synergistic enhancement effect of pure polylactic acid fiber in terms of antibacterial properties, breathability, warmth retention and non-allergenicity.

[0019] Beneficial Technical Effects: This invention provides a functional bedding product made entirely of polylactic acid (PLA) fiber. The PLA fiber functional bedding product includes a fabric and / or filling, both of which are made of PLA fiber. The PLA fiber functional bedding product provided by this invention is entirely made of 100% PLA fiber, is skin-friendly, antibacterial, and odorless, providing both warmth and breathability, and is non-allergenic. It avoids the potential pathogenic hazards of microfibers being inhaled during sleep, and achieves 100% recyclability and reusability of the PLA fiber. Detailed Implementation

[0020] This invention provides a functional bedding product made entirely of polylactic acid fiber, the polylactic acid fiber functional bedding product comprising a fabric and / or a filling, both of which are made of polylactic acid fiber.

[0021] To better understand the present invention, the following embodiments further illustrate the content of the present invention, but the content of the present invention is not limited to the following embodiments.

[0022] Example 1

[0023] A polylactic acid fiber functional comforter core, comprising a fabric and a filling.

[0024] The fabric is made of 100% polylactic acid filament woven on a 36-inch / 32-needle circular knitting machine. The polylactic acid filament specification is DTY75D / 72F.

[0025] The filling material is 100% polylactic acid bicomponent and monocomponent fibers, which are successively processed through opening, mixing and carding, web laying, heat drying, cooling, edge trimming and rolling.

[0026] Example 2

[0027] A functional duvet cover made of polylactic acid (PLA) fiber is woven from 100% PLA filaments using a wide-width water-jet loom. The PLA filament specification is DTY75D / 72F. This fabric can also be used as pillowcases, throw pillowcases, sheets, and mattress covers. After finishing processes such as napping and embossing, it can be transformed into many different effects.

[0028] Example 3

[0029] A polylactic acid fiber functional pillow core, comprising a fabric and a filling.

[0030] The fabric is made of 100% polylactic acid filament woven on a shuttle water jet loom. The polylactic acid filament specification is DTY150D / 144F.

[0031] The filling material is made of 100% polylactic acid fiber bicomponent and monocomponent through processes such as opening, mixing and carding, and balling.

[0032] Example 4

[0033] A functional bed sheet made of polylactic acid fiber, the fabric of which is 100% polylactic acid filament woven by shuttle air jet, the polylactic acid filament specification being DTY150D / 144F+75D / 72F.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for preparing a functional bedding product made entirely of polylactic acid fiber, characterized in that, Includes the following steps: Choose 100% polylactic acid fiber as the sole material for bedding fabrics and / or fillings; Polylactic acid filaments are woven into bedding fabrics using knitting or weaving techniques. Polylactic acid bicomponent fibers and monocomponent fibers are sequentially processed through opening, mixing and carding, web laying, heat drying, cooling, edge trimming and rolling to make bedding filling; Both the fabric and the filling are made of pure polylactic acid fiber, achieving a combination of material uniformity and chemical recyclability.

2. The preparation method according to claim 1, characterized in that, The polylactic acid filament is one of DTY, FDY or flat profiled filament, and is made entirely from polylactic acid raw materials.

3. The preparation method according to claim 1, characterized in that, The knitting is performed using a circular knitting machine or warp knitting, and the polylactic acid filament used is DTY 75D / 72-144F.

4. The preparation method according to claim 1, characterized in that, The weaving process employs one of the following: a wide-width water-jet loom, an air-jet loom, or a large rapier jacquard loom, and no other fibers are mixed in during the weaving process.

5. The preparation method according to claim 1, characterized in that, During the preparation of the filler, the polylactic acid bicomponent and the single-component fiber are uniformly mixed during the opening and combing stages to ensure the overall structural consistency and thermal bonding uniformity of the filler.

6. The preparation method according to claim 1, characterized in that, When the bedding is a duvet cover, pillowcase, or sheet, the fabric is woven using a woven process and may undergo brushing and embossing post-treatments. No non-polylactic acid materials are introduced into any of the processing steps.

7. The preparation method according to claim 1, characterized in that, When the bedding is a pillow core, its filling is formed by a balling process after being opened, mixed and combed, and the fabric is woven on a shuttle water jet loom, maintaining 100% polylactic acid fiber throughout the process.

8. The preparation method according to claim 1, characterized in that, No other fiber materials are added in any of the preparation steps, so that the final bedding achieves the synergistic enhancement effect of pure polylactic acid fiber in terms of antibacterial properties, breathability, warmth and non-allergenicity, and ensures that the bedding can be directly chemically recycled or naturally degraded after disposal, achieving green synergy throughout the entire life cycle.